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Ginseng polysaccharides (GPs) have shown gut microbiota-related antitumor effects. However, the relation between their structures and antitumor functions remains unknown. Here, crude polysaccharide (GP-c) and its fractions neutral polysaccharide (GP-n) and pectin (GP-a) were prepared for structure characterization and anti-B16F10 melanoma effect evaluation, and their influence on gut microbiota diversities and short-chain fatty acids (SCFAs) were also analyzed. Spearman correlations among the altered gut microbiota, SCFAs, and antitumor effects were conducted to elucidate the structure-function relationships. It was shown that the structures of GP-c, GP-n, and GP-a varied in monosaccharide composition and molecular weight distribution. GP-n and GP-c showed anti-melanoma effects, whereas GP-a promoted its growth slightly. GP-n and GP-c restored SCFAs levels such as acetic acid and butyric acid; moreover, it improved the gut microbiota ecosystem by upregulating the abundance of

Apocyni Veneti Folium (AVF) is a commonly used traditional Chinese medicinal herb for the treatment of hypertension. Chemical markers are crucial for the quality control of herbal medicines; however, the therapeutic components of AVF remain to be well elucidated.This study was intended to integrate serum pharmacochemistry and network pharmacology to identify chemical markers of AVF and establish an efficacy-related quality control method of AVF.Ultra-performance liquid chromatography quadrupole time-of-flight tandem mass spectrometry (UPLC-QTOF-MS/MS) was applied to identify the absorbed AVF constituents in rat serum. Network pharmacology was further used to identify anti-hypertension-related chemical markers. Subsequently, a quantitative method was established using UPLC with diode array detection (DAD) and applied for quality evaluation of commercial AVF samples.Thirteen prototype constituents were unequivocally or tentatively characterized in serum samples, among which quercetin, kaempferol, hyperoside, isoquercitrin, chlorogenic acid, cryptochlorogenic acid, and neochlorogenic acid were identified as dominant chemicals related to anti-hypertensive efficacy. The quantitative data showed that the total contents of seven marker components even showed 2-fold variation among 14 batches of commercial AVF samples with RSD values ranging from 12.15% to 75.61%. Hierarchical cluster analysis and heatmap analysis showed that 14 batches of commercial AVF samples could be divided into three main groups.The chemical markers obtained from this study could be applicable for efficacy-related quality control of AVF.

Variegated expression of killer Ig-like receptors (KIR) in human NK cells is a stochastic process exclusive to subsets of mature NK cells and CD8+ T cells. Allele-specific KIR expression is maintained by DNA methylation within the proximal promoter regions. Because KIR genes are densely methylated in NK cell progenitors, there is an implied stage of human NK cell development in which DNA demethylation takes place to allow for active transcription. When and how this process occurs is unknown. In this study, we show that KIR proximal promoters are densely methylated in less mature CD56bright NK cells and are progressively demethylated in CD56dim NK cells as they mature and acquire KIR. We hypothesized that ten-eleven translocation (TET) enzymes, which oxidize 5mC on DNA could mediate KIR promoter demethylation. The catalytic efficiency of TET enzymes is known to be enhanced by ascorbic acid. We found that the addition of ascorbic acid to ex vivo culture of sorted CD56bright NK cells increased the frequency of KIR expression in a dose-dependent manner and facilitated demethylation of proximal promoters. A marked enrichment of the transcription factor Runx3 as well as TET2 and TET3 was observed within proximal KIR promoters in CD56bright NK cells cultured with ascorbic acid. Additionally, overexpression of TET3 and Runx3 promoted KIR expression in CD56bright NK cells and NK-92 cells. Our results show that KIR promoter demethylation can be induced in CD56bright, and this process is facilitated by ascorbic acid.

In the present study, the hypoglycemic effects of glucomannan (AGM) and its enzyme-degraded products from Amorphophallus albus were investigated. Four degraded products were prepared through ultrafiltration of β-glucanase-degraded products of AGM. The hypoglycemic activities were evaluated in HFD-STZ-induced type 2 diabetes mellitus (T2DM) mice, and the diversity of gut bacteria was analyzed by 16S rRNA gene sequencing; the fecal short chain fatty acids (SCFAs) and endogenous metabolites were determined by UPLC-QTOF-MS/MS. It was found that AGM and its enzyme-degraded products, though with different molecular weights, had similar β-glycosidic bonds and monosaccharide compositions, exerted similar strength of hypoglycemic effects, and reinstated with a similar extent the disordered gut microbiota and the contents of SCFAs and endogenous metabolites. It was speculated that the hypoglycemic activity of AGM is decided by not the molecular weight but the glycosidic bonds/monosaccharide composition of AGM, which might be structurally specific to the gut bacteria, and thus certain SCFAs and endogenous metabolites that are related to the occurrence and therapy of T2DM. This study provides a scientific basis for using AGM as potential prebiotics beneficial for prevention or therapeutic treatment of T2DM.

Truncated silver nanodecahedrons (TAgNDs) and truncated silver nanoplates (TAgNPs) fabricated via chemical reduction and photochemical methods were added to poly[3,4-ethylenedioxythiophene]:poly[styrenesulfonate] (PEDOT:PSS) as dopants to promote the luminous efficiency of blue-emitting polymer light-emitting diodes (PLEDs). The differences in shape between TAgNDs and TAgNPs result in better dispersion of TAgNDs in PEDOT:PSS. Therefore, at an optimal doping concentration (the distributed density in the light-emitting region is 6.88 μg cm-2 for TAgNDs and 5.16 μg cm-2 for TAgNPs), the average current efficacy and maximum electroluminescence intensity enhancement factor for TAgND-doped PLEDs were 4.18 cd A-1 and 420%, respectively, which are much higher than those for TAgNP-doped PLEDs (1.83 cd A-1 and 200%) at a luminescence wavelength of 440 nm.

A pre-metastatic niche (PMN) facilitates cancer metastasis through mobilization and recruitment of bone marrow-derived cells (BMDCs) and associated factors. In bone marrow, hematogenous cells, including osteoclasts, macrophages and lymphocytes, and mesenchymal cells, including mesenchymal stem cells, osteoblasts and adipocytes, are involved in PMN formation. Patients with lung cancer and metastasis have a poor prognosis and shortened median survival time. Bone marrow has been considered fertile ground for dormant and proliferating tumor cells, and mobilizing and recruiting BMDCs and immune cells can establish a PMN. However, the role of BMDCs in PMN formation is not yet fully understood. The present study aimed to investigate the association between BMDCs and PMN in bone marrow tissue samples. The results demonstrated that bone marrow served an important role in lung cancer progression and that eight pathways were potentially involved, including 'T-cell receptor signaling pathway', 'osteoclast differentiation', 'MAPK signaling pathway', 'VEGF signaling pathway', 'leukocyte transendothelial migration', 'signaling pathways regulating the pluripotency of stem cells', 'oxytocin signaling pathway' and 'cell adhesion molecules (CAMs)'. In addition, the present study investigated the role of BMDCs in facilitating lung cancer metastasis. In conclusion, the results from the present study suggested that molecular alterations in gene expression may provide a novel signature in lung cancer, which may aid in the development of novel diagnostic and therapeutic strategies for patients with lung cancer and bone metastasis.

Ginseng is often prescribed together with cisplatin for treatment of cancer, but the interaction between ginseng and cisplatin is still unknown. This study employed ginsenoside Rb1 (Rb1), one of the major components in ginseng, to explore the effects and involved mechanisms of cisplatin on the pharmacokinetics of ginseng. The effects of cisplatin on the pharmacokinetics of Rb1 and its bioactive metabolites Rd, Rg3, and F2 were investigated by using A549-bearing mice with and without cisplatin intervention. Our data showed that cisplatin could significantly decrease the AUC(0-t) and Cmax of Rd, Rg3, and F2, except Rb1. To evaluate the involved mechanisms, feces and intestinal mucosa were collected to explore the effects of cisplatin on the gut metabolism of Rb1 in vitro; meanwhile, Caco-2 cell model and small intestine histological characters were examined to evaluate the effects of cisplatin on the gut absorptive areas and permeability. The mechanisms involved may be mainly related to the comprehensive contributions of inhibited intestinal bacteria and mucosa metabolisms, narrowed intestinal absorptive area, increased efflux ratio of intestinal absorption and enhanced intestinal permeability. All these findings suggested that the dosage of ginseng traditionally used for health protection should be adjusted when it was prescribed together with cisplatin in the treatment of cancer.

In present study, an integrating UPLC-QTOF-MS/MS chemical profiling and UPLC-TQ-MS/MS quantification strategy was developed for the holistic quality evaluation of Hibisci Mutabilis Folium (HMF), a traditional Chinese medicinal herb. Using UPLC-QTOF-MS/MS, a total of 58 components were characterized in HMF sample, of which 36 flavonoids, 3 coumarins, 7 organic acids and 4 triterpene acids were unambiguously identified by comparing the chromatographic behavior and mass spectrum with that of reference compounds, or tentatively assigned by comparing the fragmentation pathways and characteristic fragment ions with that of reference substances and/or published literatures together with mass defect filtering (MDF) screening. Meanwhile, 29 representative major components, including 16 flavonoids, 3 coumarins, 7 organic acids and 3 triterpene acids, were quantified by a newly established UPLC-TQ-MS/MS method that was validated in terms of linearity, sensitivity, precision, repeatability, accuracy and stability. The integrated strategy was applied to simultaneously qualifying and quantifying HMF commercial samples and self-prepared samples harvested in difference periods and dried with different methods. It was found that the contents of 29 major components were obviously different in commercial samples or self-prepared samples, suggesting that the holistic quality of HMF commercial samples was inconsistent, and harvesting period and drying method might be the main factors that affect the holistic quality consistency of commercial HMF samples. Standardized harvesting period and drying method should be established for ensuring the holistic quality consistency of HMF.

By a pilot trial on investigating immunomodulatory activity and target of ginsenosides, the major bioactive components of ginseng, here we report that structural analogues in herbal medicines hit a shared target to achieve cumulative bioactivity. A ginsenoside analogues combination with definite immunomodulatory activity in vivo was designed by integrating pharmacodynamics, serum pharmacochemistry and pharmacokinetics approaches. The cumulative bioactivity of the ginsenoside analogues was validated on LPS/ATP-induced RAW264.7 macrophages. The potentially shared target NLRP3 involved in this immunomodulatory activity was predicted by systems pharmacology. The steady binding affinity between each ginsenoside and NLRP3 was defined by molecular docking and bio-layer interferometry assay. The activation of NLRP3 inflammasomes in LPS/ATP-induced RAW264.7 was significantly suppressed by the combination, but not by any individual, and the overexpression of NLRP3 counteracted the immunomodulatory activity of the combination. All these results demonstrate that the ginsenoside analogues jointly hit NLRP3 to achieve cumulative immunomodulatory activity., Zhang et al. design ginsenoside structural analogues and demonstrate that their combination shows more potent immunomodulatory activities than individual ginsenosides used alone at the same dosages. They predict that these analogues act on the joint target NLRP3 and consequently suggest that structural analogues hit a shared target to achieve cumulative bioactivity.

Epigenetic landscapes can provide insight into regulation of gene expression and cellular diversity. Here, we examined the transcriptional and epigenetic profiles of seven human blood natural killer (NK) cell populations, including adaptive NK cells. The BCL11B gene, encoding a transcription factor (TF) essential for T cell development and function, was the most extensively regulated, with expression increasing throughout NK cell differentiation. Several Bcl11b-regulated genes associated with T cell signaling were specifically expressed in adaptive NK cell subsets. Regulatory networks revealed reciprocal regulation at distinct stages of NK cell differentiation, with Bcl11b repressing RUNX2 and ZBTB16 in canonical and adaptive NK cells, respectively. A critical role for Bcl11b in driving NK cell differentiation was corroborated in BCL11B-mutated patients and by ectopic Bcl11b expression. Moreover, Bcl11b was required for adaptive NK cell responses in a murine cytomegalovirus model, supporting expansion of these cells. Together, we define the TF regulatory circuitry of human NK cells and uncover a critical role for Bcl11b in promoting NK cell differentiation and function.

Select subsets of immune effector cells have the greatest propensity to mediate antitumor responses. However, procuring these subsets is challenging, and cell-based immunotherapy is hampered by limited effector-cell persistence and lack of on-demand availability. To address these limitations, we generated a triple-gene-edited induced pluripotent stem cell (iPSC). The clonal iPSC line was engineered to express a high affinity, non-cleavable version of the Fc receptor CD16a and a membrane-bound interleukin (IL)-15/IL-15R fusion protein. The third edit was a knockout of the ecto-enzyme CD38, which hydrolyzes NAD+. Natural killer (NK) cells derived from these uniformly engineered iPSCs, termed iADAPT, displayed metabolic features and gene expression profiles mirroring those of cytomegalovirus-induced adaptive NK cells. iADAPT NK cells persisted in vivo in the absence of exogenous cytokine and elicited superior antitumor activity. Our findings suggest that unique subsets of the immune system can be modeled through iPSC technology for effective treatment of patients with advanced cancer. acceptedVersion

Variegated expression of killer immunoglobulin-like receptors (KIR) in human natural killer (NK) cells is a stochastic process exclusive to subsets of mature NK cells and CD8(+) T cells. Allele-specific KIR expression is maintained by DNA methylation within the proximal promoter regions. Because KIR genes are densely methylated in NK cell progenitors, there is an implied stage of human NK cell development where DNA demethylation takes place to allow for active transcription. When and how this process occurs is unknown. Here, we show that KIR proximal promoters are densely methylated in less mature CD56(bright) NK cells and are progressively demethylated in CD56(dim) NK cells as they mature and acquire KIR. We hypothesized that ten-eleven translocation (TET) enzymes, which oxidize 5mC on DNA could mediate KIR promoter demethylation. The catalytic efficiency of TET enzymes is known to be enhanced by ascorbic acid. We found that the addition of ascorbic acid to ex vivo culture of sorted CD56(bright) NK cells increased the frequency of KIR expression in a dose-dependent manner and facilitated demethylation of proximal promoters. A marked enrichment of the transcription factor Runx3 as well as TET2 and TET3 was observed within proximal KIR promoters in CD56(bright) NK cells cultured with ascorbic acid. Additionally, overexpression of TET3 and Runx3 promoted KIR expression in CD56(bright) NK cells and NK-92 cells. Our results show that KIR promoter demethylation can be induced in CD56(bright), and this process is facilitated by ascorbic acid.

Gut microbiota is associated with tumor progress and host metabolic disorder, but whether gut microbiota regulation can affect cancer growth through interfering host metabolism maintains unknown yet. Here, we used combined antibiotics (ABX) to build an extremely altered gut microbiota ecosystem and study its influence on the xenograft MC38 tumor as well as the associations of the effects with host metabolisms. The MC38 tumor bearing mouse was treated with ABX (vancomycin, neomycin and imipenem-cilastatin) to build the extremely altered microbiota ecosystem, the gut microbiota diversity alteration was determined by 16S rRNA based gene sequencing. The effects of the altered microbiota on tumor were assessed by cell apoptosis and growth rate of the tumor. The potential metabolic biomarkers and involved metabolism pathways were screened out by UPLC-QTOF-MS/MS based untargeted metabolomics and KEGG analysis respectively. The correlations between key metabolites and microbiota were analyzed by Spearman correlation analysis. Compared with the un-treated mice, the tumor growth of ABX-treated mice was significantly suppressed, and the cell apoptosis was obviously promoted. The gut microbiota diversity was decreased significantly with the dominant bacteria phylum Bacteroidetes and Firmicutes replaced by Proteobacteria, which involved 14 significantly altered bacteria genera. Four potential targeted metabolism pathways, including sphingolipid, glycerophospholipid, arginine-proline and primary bile acid metabolism, were screened out, and the involved key metabolites such as ceramide, phosphatidylethanolamine, phosphatidylcholine, taurocholic acid and L-proline were correlated significantly with the altered bacteria genera. Through the integrated analysis of microbiome and metabolomics, it was revealed that gut microbiota regulation may inhibit the xenograft MC38 tumor growth potentially by interfering host lipid and amino acid metabolisms, such as sphingolipid, glycerophospholipid, primary bile acid and arginine-proline metabolisms in this case.

In present study, a comprehensive strategy integrating multiple chromatographic and chemometric methods to simultaneously characterize the volatile and non-volatile components was developed for the holistic quality evaluation of commercial Agastache rugosa (AR), a common edible and medicinal herb, collected in China. The volatile components and the non-volatile components were characterized by GC-MS and UPLC-QTOF-MS/MS, respectively. And the data were analyzed either independently or integratively by multivariate statistical analysis (MVS) for the quality assessment of commercial samples. The results revealed that the commercial AR samples were different in both the composition and the content of volatile components. However, the compositions of non-volatile components in commercial AR were generally similar, whereas the contents of some components were different. All the results indicated that the holistic quality of commercial AR was inconsistent, and the commercial samples collected could be classified into two main groups, the volatile components were majorly responsible for the classification. Whether or not the holistic quality variations affect the efficacy of AR deserves further investigation.

“Adaptive” NK cells expressing the activating receptor NKG2C expand and persist in HCMV-seropositive individuals. Cichocki et al. demonstrate enhanced oxidative and glycolytic metabolism for adaptive NK cells and implicate ARID5B as an important regulator of mitochondrial metabolism, IFN-γ production, and survival., Natural killer (NK) cells with adaptive immunological properties expand and persist in response to human cytomegalovirus. Here, we explored the metabolic processes unique to these cells. Adaptive CD3−CD56dimCD57+NKG2C+ NK cells exhibited metabolic hallmarks of lymphocyte memory, including increased oxidative mitochondrial respiration, mitochondrial membrane potential, and spare respiratory capacity. Mechanistically, we found that a short isoform of the chromatin-modifying transcriptional regulator, AT-rich interaction domain 5B (ARID5B), was selectively induced through DNA hypomethylation in adaptive NK cells. Knockdown and overexpression studies demonstrated that ARID5B played a direct role in promoting mitochondrial membrane potential, expression of genes encoding electron transport chain components, oxidative metabolism, survival, and IFN-γ production. Collectively, our data demonstrate that ARID5B is a key regulator of metabolism in human adaptive NK cells, which, if targeted, may be of therapeutic value., Graphical Abstract

Hypoxia, the most commonly observed characteristic in cancers, is implicated in the establishment of an immunosuppressive niche. Recent studies have indicated that extracellular vesicle (EV)-mediated cancer-stroma interactions are considered to play a critical role in the regulation of various cellular biological functions, with phenotypic consequences in recipient cells. However, the mechanisms underlying the relationship between EVs and hypoxia during cancer progression remain largely unknown. In this study, we found that EVs derived from hypoxic lung cancers increased M2-type polarization by miR-103a transfer. Decreased PTEN levels caused by hypoxic cancer-cell-derived EV miR-103a increased activation of AKT and STAT3 as well as expression of several immunosuppressive and pro-angiogeneic factors. In contrast, inhibition of miR-103a by an miRNA inhibitor effectively decreased hypoxic cancer-mediated M2-type polarization, improving the cytokine prolife of tumor infiltration macrophages. Macrophages received cancer-cell-derived EV miR-103a feedback to further enhance cancer progression and tumor angiogenesis. Finally, circulating EV miR-103a levels were higher in patients with lung cancer and closely associated with the M2 polarization. In conclusion, our results delineate a novel mechanism by which lung cancer cells induce immunosuppressive and pro-tumoral macrophages through EVs and inspire further research into the clinical application of EV inhibition or PTEN restoration for immunotherapy., Graphical Abstract, Extracellular vesicle (EV) miR-103 can be transferred from hypoxic cancer cells to macrophages, resulting in the enhancement of M2 polarization by the downregulation of miR-103a’s direct target PTEN. EV miR-103a increases the stimulatory effects of macrophages on cancer progression and angiogenesis.

// Jen-Yu Hung 1, 2 , Meng-Chi Yen 3 , Shu-Fang Jian 4 , Cheng-Ying Wu 4 , Wei-An Chang 2, 4 , Kuan-Ting Liu 1, 3, 4 , Ya-Ling Hsu 5 , Inn-Wen Chong 2, 6 and Po-Lin Kuo 4, 7 1 School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan 2 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan 3 Department of Emergency Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan 4 Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan 5 Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan 6 Department of Respiratory Therapy, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan 7 Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung, Taiwan Correspondence to: Inn-Wen Chong, email: chong@kmu.edu.tw Po-Lin Kuo, email: kuopolin@seed.net.tw Keywords: SPARC, WNK1, lung cancer, EMT, migration Received: March 24, 2017 Accepted: June 20, 2017 Published: July 22, 2017 ABSTRACT The extracellular matrix is a component of physiological microenvironment and a regulator of cellular processes such as migration and proliferation. Secreted Protein Acidic and Rich in Cysteine (SPARC/osteonectin) is an extracellular matrix-associated glycoprotein involved in the regulation of cell proliferation and cell migration in several types of cancers. However, the role of SPARC in lung cancer is paradoxical and details of the regulatory mechanism are not well-known. In this study, we investigated novel SPARC-mediated signaling pathways. Treatment of SPARC increased cell proliferation, migration, and mesenchymal phenotype in two non-small cell lung cancer cell lines, CL1-5 and H1299. We found that these phenotypes were not regulated by focal adhesion kinase and Src kinase, but were mediated by with no lysine (K) kinase 1 (WNK1). Suppression of WNK1 expression decreased the expression of SPARC-induced N-cadherin and smooth muscle actin. Moreover, Snail, an important transcription factor for regulating epithelial–mesenchymal transition, is also involved in SPARC/WNK1 pathway. In a murine tumor model, SPARC treatment significantly induced phosphorylation of Akt and WNK1 in lung tumor nodules when compared to control mice. In conclusion, these data suggest that WNK1 is a novel molecule in SPARC-mediated mesenchymal signaling pathway in non-small cell lung cancer.

Introduction The recent emergence of avian influenza strains has fuelled concern about pandemic preparedness since vaccines targeting these viruses are often poorly immunogenic. Weak antibody responses to vaccines have been seen across multiple platforms including plant-made VLPs. To better understand these differences, we compared the in vitro responses of human immune cells exposed to plant-made virus-like particle (VLP) vaccines targeting H1N1 (H1-VLP) and H5N1 (H5-VLP). Methods Peripheral blood mononuclear cells (PBMC) from healthy adults were stimulated ex vivo with 2-5 µg/mL VLPs bearing the hemagglutinin (HA) of either H1N1 (A/California/7/2009) or H5N1 (A/Indonesia/5/05). VLP-immune cell interactions were characterized by confocal microscopy and flow cytometry 30 min after stimulation with dialkylaminostyryl dye-labeled (DiD) VLP. Expression of CD69 and pro-inflammatory cytokines were used to assess innate immune activation 6 h after stimulation. Results H1- and H5-VLPs rapidly associated with all subsets of human PBMC but exhibited unique binding preferences and frequencies. The H1-VLP bound to 88.7 ± 1.6% of the CD19+ B cells compared to only 21.9 ± 1.8% bound by the H5-VLP. At 6 h in culture, CD69 expression on B cells was increased in response to H1-VLP but not H5-VLP (22.79 ± 3.42% vs. 6.15 ± 0.82% respectively: p

Ethnopharmacological relevance Poria cocos (Schw.) Wolf (Poria) is a well-known traditional medicinal fungus. It has been considered to possess spleen-invigorating (Jianpi) effects in traditional Chinese medicine, and is used clinically to treat spleen deficiency (Pixu) with symptoms of intestinal disorders such as diarrhea, indigestion, mucositis and weight loss. The aim of this study To investigate the protective effects of Poria and its three component fractions (Water-soluble polysaccharides, WP; alkali-soluble polysaccharides, AP; triterpene acids, TA) on cisplatin-induced intestinal injury and explore the underlying mechanisms. Materials and methods C57BL/6 mice were treated with Poria powder (PP), WP, AP and TA by oral gavage respectively for 13 days, and intraperitoneally injected with 10 mg/kg of cisplatin on day 10 to conduct a cisplatin-induced intestinal injury model. Pathological changes of ileum and colon were examined using H&E staining. The composition of gut microbiota and the alteration of host metabolites were characterized by 16S rDNA amplicon sequencing and UPLC-QTOF-MS/MS based untargeted metabolomics analysis. Results PP and WP attenuated the cisplatin-induced ileum and colon injury, and WP alleviated the weight loss and reversed the elevation of IL-2, IL-6 in serum. Both PP and WP could mitigate cisplatin-induced dysbiosis of gut microbiota, in particular PP and WP decreased the abundance of pathogenic bacteria including Proteobacteria, Cyanobacteria, Ruminococcaceae and Helicobacteraceae, while WP promoted the abundance of probiotics, such as Erysipelotrichaceae and Prevotellaceae. Moreover, WP attenuated the cisplatin-induced alteration of metabolic profiles. The levels of potential biomarkers, including xanthine, L-tyrosine, uridine, hypoxanthine, butyrylcarnitine, lysoPC (18:0), linoleic acid, (R)-3-hydroxybutyric acid, D-ribose, thiamine monophosphate, indolelactic acid and plamitic acid, showed significant correlations with intestinal flora. Conclusions PP and WP possess protective effects against cisplatin-induced intestinal injury via potentially regulating the gut microbiota and metabolic profiles.

The present study investigated the potential hypoglycemic and antioxidant effects of polysaccharides extracted from the petioles and pedicels of Euryale ferox Salisb. (EFPP) on alloxan-induced hyperglycemic mice. The EFPP had a total carbohydrate of 65.72 ± 2.81%, uronic acid of 4.56 ± 0.62% and protein of 0.58 ± 0.12%, with an average molecular weight from 1.02 kDa to 11.45 kDa and monosaccharide composition of Man, GlcA, Rha, Glc, Gal and Ara at a molar ratio of 0.12 : 0.01 : 9.57 : 0.41 : 1.00 : 0.24. Administration with EFPP, especially high dose EFPP, was beneficial to reverse body weight loss, reduce blood glucose levels, enhance serum insulin levels, improve oral glucose tolerance, increase hepatic glycogen content and GCK activity, and modulate the mRNA expression of GCK in the liver. Meanwhile, EFPP had protective effects against alloxan-induced oxidative injury in mice, via increasing the activities of SOD, CAT and GSH-Px and decreasing the MDA contents in the liver and kidney of the mice. EFPP ameliorated the damage in pancreas, kidney and liver tissues, which was confirmed by histopathological observation. The results suggested that EFPP possess hypoglycemic and antioxidant activities, and could be a potential source of natural hypoglycemic and antioxidant agents for functional foods or complementary medicines.

// Wei-An Chang 1, 2 , Jen-Yu Hung 2, 3 , Shu-Fang Jian 1 , Yi-Shiuan Lin 1 , Cheng-Ying Wu 1 , Ya-Ling Hsu 4 , Po-Lin Kuo 1, 4, 5 1 Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan 2 Division of Pulmonary and Critical Care Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan 3 School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan 4 Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan 5 Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung, Taiwan Correspondence to: Po-Lin Kuo, email: kuopolin@seed.net.tw Ya-Ling Hsu, email: hsuyl326@gmail.com Keywords: laricitrin, dendritic cell, lung cancer, IL-10, STAT3 Received: August 20, 2016 Accepted: October 24, 2016 Published: November 09, 2016 ABSTRACT Natural polyphenolic compounds of grapes and their seeds are thought to be therapeutic adjuvants in a variety of diseases, including cancer prevention. This study was carried out to investigate the effect of grape phenolic compounds on the regulation of cancer-mediated immune suppression. Laricitrin exhibits the greatest potential to ameliorate the suppressive effects of lung cancer on dendritic cells’ (DCs’) differentiation, maturation and function. Human lung cancer A549 and CL1-5 cells change the phenotype of DCs that express to high levels of IL-10 and prime T cells towards an immune suppression type-2 response (Th2). Laricitrin treatment stimulated DC differentiation and maturation in the condition media of cancer cells, a finding supported by monocyte marker CD14’s disappearance and DC marker CD1a’s upregulation. Laricitrin decreases expression of IL-10 in cancer-conditioned DCs, and subsequently switches CD4 + T cell response from Th2 to Th1 in vitro and in vivo . Reversal of laricitrin on lung cancer-induced DCs’ paralysis was via inhibiting the phosphorylation of signal transducer and activator of transcription 3 (STAT3). Laricitrin also potentiated the anticancer activity of cisplatin in mouse models. Thus, laricitrin could be an efficacious immunoadjuvant and have a synergistic effect when combined with chemotherapy.

Balanced Hash Tree (BHT) is a mechanism for service function (SF) chaining, service routing, and traffic steering that enables switches to select SF instances for load balancing without involving the controller. In an experimental evaluation, BHT decreased packet-in message-processing time by 92.5 percent and achieved near-perfect load-balancing performance.

All-trans Retinoic acid (RA) and its derivatives are potent therapeutics for immunological functions including wound repair. However, the molecular mechanism of RA modulation in innate immunity is poorly understood, especially in macrophages. We found that topical application of RA significantly improves wound healing and that RA and IL-4 synergistically activate Arg1, a critical gene for tissue repair, in M2 polarized macrophages. This involves feed forward regulation of Raldh2, a rate-limiting enzyme for RA biosynthesis, and requires Med25 to coordinate RAR, STAT6 and chromatin remodeler, Brg1 to remodel the +1 nucleosome of Arg1 for transcription initiation. By recruiting elongation factor TFIIS, Med25 also facilitates transcriptional initiation-elongation coupling. This study uncovers synergistic activation of Arg1 by RA and IL-4 in M2 macrophages that involves feed forward regulation of RA synthesis and dual functions of Med25 in nucleosome remodeling and transcription initiation-elongation coupling that underlies robust modulatory activity of RA in innate immunity.

Earnings management is popular in the banking industry. Earnings can be manipulated by discretionary loan loss provisions (DLLP). Analysing the trajectories of banks’ DLLP (i.e. their change in DLLP over time) is an effective way to assess the performance in earnings management for the banking industry, but seems not to have been addressed in the earnings management literature. In this study, we analyse the trajectories of DLLP with the yearly data from 2007 through 2012 for four types of banks in China. The results have indicated that state-owned banks, policy banks and city commercial banks seem to manage earnings well. Cautionary notes about bank risks are provided.

Ethnopharmacological relevance Cyclophosphamide (CTX) is a first line chemotherapeutic agent, but often limited for its unstable therapeutic effect and serious side effects. Ginsenosides could facilitate the anti-tumor efficiency of CTX, including benefiting therapeutic effect and decreasing side effects. Aim of the study To investigate the potential mechanism of ginsenosides on benefiting the anti-tumor efficiency of CTX. Materials and methods Mammary carcinoma mice were applied to investigate the anti-tumor efficiency and potential mechanism of combinational treatment of ginsenosides and CTX. Therapeutic effect was evaluated based on survival rate, tumor burden, tumor growth inhibition rate, and apoptosis and histological changes of tumor tissues. Anti-tumor immunity was studied by measuring serum level of anti-tumor cytokines. Gut mucositis, one of lethal side effects of CTX, was evaluated by diarrhea degree, gut permeability and tight junction proteins expressions. Gut microbial diversity was analyzed by 16S rRNA gene sequencing, and fecal transplant and antibiotics sterilized animals were performed to evaluate the therapeutic effect of gut microbiota on tumor suppression. Results Ginsenosides facilitated the therapeutic effect of CTX in mice, which manifested as prolonged survival rate, decreased tumor burden, as well as enhanced tumor growth inhibition rate and apoptosis. The favoring effect was related to elevation of anti-tumor immunity which manifested as the increased anti-tumor cytokines (INF-γ, IL-17, IL-2 and IL-6). Further studies indicated the elevation was ascribed to ginsenosides promoted reproduction of gut probiotics including Akkermansia, Bifidobacterium and Lactobacillus. Moreover, co-administration of ginsenosides in mice alleviated CTX-induced gut mucositis, including lower gut permeability, less diarrhea, less epithelium damage and higher tight junction proteins. Further researches suggested the alleviation was related to ginsenosides activated Nrf2 and inhibited NFκB pathways. Conclusion Ginsenosides show dual roles to facilitate the anti-tumor efficiency of CTX, namely promote the anti-tumor immunity through maintaining gut microflora and ameliorate gut mucositis by modulating Nrf2 and NFκB pathways.

Introduction Triterpene acids from the dried sclerotia of Poria cocos (Schw.) Wolf (poria) were recently found to possess anti-cancer activities. Identification of more triterpene acid analogues in poria is worthwhile for high throughput screening in anti-cancer drug discovery. Objective To establish an efficient dereplication strategy for identifying triterpene acid analogues in poria based on ultra-performance liquid chromatography with electrospray ionisation quadrupole time-of-flight tandem mass spectrometry (UPLC-ESI-QTOF-MS/MS). Methodology The structural characteristics and mass spectrometric data profiles of known triterpene acids previously reported in poria were used to establish a predicted-analogue database. Then, the quasi-molecular ions of components in a poria extract were automatically compared with those in the predicted-analogue database to highlight compounds of potential interest. Tentative structural identification of the compounds of potential interest and discrimination of isomers were achieved by assessing ion fragmentation patterns and chromatographic behaviour prediction based on structure-retention relationship. Results A total of 62 triterpene acids were unequivocally or tentatively characterised from poria, among which 17 triterpene acids were tentatively identified for the first time in poria. Conclusion This study provided more structure information of triterpene acids in poria for future high throughput screening of anti-cancer candidates. It is suggested that this semi-automated approach in which MS data are automatically compared to a predictive database may also be applicable for efficient screening of other herbal medicines for structural analogues of proven bioactives.

Receptor-interacting protein 140 (RIP140) is a wide-spectrum coregulator for hormonal regulation of gene expression, but its activity in development/stem cell differentiation is unknown. Here, we identify RIP140 as an immediate retinoic acid (RA)-induced dual-function chaperone for LSD1 (lysine-specific demethylase 1). RIP140 protects LSD1's catalytic domain and antagonizes its Jade-2-mediated ubiquitination and degradation. In RA-induced neuronal differentiation, the increased RIP140/LSD1 complex is recruited by RA-elevated Pit-1 to specifically reduce H3K4me2 modification on the Pax6 promoter, thereby repressing RA-induction of Pax6. This study reveals a new RA-induced gene repressive mechanism that modulates the abundance, enzyme quality, and recruitment of histone modifier LSD1 to neuronal regulator Pax6, which provides a homeostatic control for RA induction of neuronal differentiation.

During the global financial crisis in 2008, governments around the world have used a variety of policies to support threatened industries and to stabilize financial systems. In the present study, we empirically compare the patterns of the dynamic change in the financial performance of the semiconductor industry before and after government intervention by using the piecewise linear trajectory model for Japan, South Korea and Taiwan, three major economies for the industry. The empirical results indicate that, during the global financial crisis, the performance of the semiconductor industry can benefit from government support, in spite of the fact that the improvement was somewhat delayed after intervention. Moreover, the change pattern of the performance depends on the performance factor and the economy. Based on the results obtained as well as literature support, we summarize the economic and industrial policies that might have demonstrated usefulness for the industry and discuss some implications.

Phthalates are used as plasticizers in the manufacture of flexible vinyl, which is used in food contact applications. Phthalates have been demonstrated to have an adverse impact on human health, particularly in terms of cancer development. In the present study, we showed for the first time that benzyl butyl phthalate (BBP) potentiates the effect of tumor‑associated dendritic cells (TADCs) on the chemoresistance of breast cancer. Specific knockdown analysis revealed that S100A9 is the major factor responsible for the chemoresistance of doxorubicin/cyclophosphamide induced by BBP-stimulated TADCs in breast cancer. BBP exposure also increased tumor infiltrating myeloid-derived suppressor cell (MDSC) secretion of S100A8/A9, thereby exacerbating the resistance of breast cancer to doxorubicin with cyclophosphamide. In addition, BBP also stimulated the production of CXCL1/GROα by TADCs, which increased the angiogenesis of breast cancer in a mouse model. Inhibition of CXCL1/GROα by a neutralizing antibody, decreased the BBP-induced angiogenesis induced by BBP after chemotherapy in the mouse model. These results, for the first time, provide evidence that BBP influences the efficacy of chemotherapy by remodeling the tumor microenvironment of breast cancer.

The aim of the present work was to investigate the trace elements and the correlation with flavonoids from Sparganii rhizoma. The ICP-AES and ultraviolet-visible spectroscopy were employed to analyze trace elements and flavonoids. The concentrations of trace elements and flavonoids were calculated using standard curve. The content of flavonoids was expressed as rutin equivalents. The cluster analysis was applied to evaluate geographical features of S. rhizoma from different geographical regions. The correlation analysis was used to obtain the relationship between the trace elements and flavonoids. The results indicated that the 15 trace elements were measured and the K, Ca, Mg, Na, Mn, Al, Cu, and Zn are rich in Sparganii rhizome. The different producing regions samples were classified into four groups. There was a weak relationship between trace elements and flavonoids.

Cell wall polysaccharides in the petioles and pedicels of Qian (Euryale ferox Salisb.) (EFPP) were extracted using ultrasound-assisted technique. Response surface methodology (RSM) based on Box–Behnken design (BBD) was employed to optimize extraction parameters for the maximum purity of polysaccharides. The results showed that the optimum extraction conditions were extraction temperature of 80 °C, extraction time of 32 min, ultrasonic power of 270 W and liquid-to-solid ratio of 40 mL/g. Under the optimal conditions, the experimental purity of polysaccharides was 62.57% ± 1.68%, which was very close to the predicted. The crude EFPP were isolated using DEAE-52 column and four major fractions (EFPP-1, EFPP-2, EFPP-3 and EFPP-4) were obtained. Typical functional groups of polysaccharides were characteristic for EFPP-1, EFPP-3 and EFPP-4 from FT-IR spectrum. Furthermore, the crude EFPP and three fractions (EFPP-1, EFPP-3 and EFPP-4) possessed appreciable in vitro antioxidant effects on α,α-diphenyl-β-picrylhydrazyl (DPPH), 2,2′-azinobis(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS), hydroxyl radical scavenging and reducing powers. Then, the crude EFPP and EFPP-4 could effective against H2O2-induced injury on HUVEC and VSMC through enhancement of T-AOC, SOD and CAT activities and decrease of MDA content.

Cytolytic effector lymphocytes must contend with unfavorable microenvironments when infiltrating sites of infection or malignancy. Tumor cells typically have high levels of oxidative stress and produce reactive oxygen species (ROS) that suppress the cytotoxic functions of both natural killer (NK) cells and CD8+ T cells. Levels of activated granulocytes that release ROS are also elevated in cancer patients. Free radicals, such as ROS, cause detrimental cellular effects including protein oxidation, lipid peroxidation and DNA damage. Chronic viral infections, including CMV, are also associated with increased oxidative stress. We hypothesized that adaptive NK cells, which arise specifically in response to CMV, could have properties that allow these cells to persist and retain function in high oxidative stress environments. Adaptive NK cells are present in the peripheral blood of many otherwise healthy CMV seropositive individuals and expand in response to CMV reactivation in hematopoietic cell transplant (HCT) patients. Mounting evidence suggests that CMV peptides presented by HLA-E on infected cells can trigger the expansion of adaptive NK cells expressing the activating receptor NKG2C. The majority of NKG2C-positive adaptive NK cells co-express the terminal maturation marker CD57. Work by our group and others has shown that adaptive NK cells exhibit enhanced antibody-dependent cellular cytotoxicity (ADCC) and interferon (IFN)-γ production relative to canonical NK cells, appear to persist long-term and have metabolic attributes similar to memory CD8+ T cells. We also reported clinical correlations between adaptive NK cell numbers and reduced relapse risk in HCT patients with hematologic malignancies. Here, we show that CD38 expression is markedly reduced on adaptive NK cells from CMV seropositive individuals. This observation was first made from analyses of RNA-seq data comparing adaptive and canonical NK cells and was validated by flow cytometry (Figure 1A). CD38 is expressed both intracellularly and on the plasma membrane and functions as an NADase, degrading nicotinamide adenine dinucleotide (NAD+) into ADP-ribose and nicotinamide. NAD+ is a necessary cofactor for the sirturin family of protein deacetylases, which protect against oxidative stress. We hypothesized that CD38 downregulation in adaptive NK cells could be associated with more resistance to oxidative stress-induced cell death through increased NAD+ levels and sirturin activity. To determine whether there was a connection between CD38 expression and resistance to oxidative stress, we isolated NK cells from the peripheral blood of CMV seropositive donors and cultured them overnight with or without 15 mM H2O2 (hydrogen peroxide), known to induce oxidative stress and cell death. We found that NKG2C+ adaptive NK cells were markedly more resistant to oxidative stress-induced cell death compared to NKG2C-negative canonical NK cells as determined by annexin V and a fixable amine-reactive dye (LIVE/DEAD) that can permeate damaged membranes of dead cells and react with interior amines (Figure 1B). Similar results were observed in assays where NK cells from CMV seropositive donors were co-cultured with neutrophils pre-activated with phorbol 12-myristate 13-acetate (PMA) to induce the release of reactive oxygen species. To determine whether CD38 expression is directly associated with the NK cell response to oxidative stress, we generated induced pluripotent stem cell (iPSC) lacking CD38 through CRISPR/Cas9 gene editing that were differentiated into NK cells and tested for their ability to resist oxidative stress-induced death. Compared to control iPSC-derived NK (iNK) cells that express high levels of CD38 (Figure 1C), a substantially larger percentage of CD38 knockout iNK cells were viable when cultured overnight with H2O2 (Figure 1D). Our results have implications for adoptive immunotherapy to treat patients with cancer where a major goal is to manufacture cytotoxic cells that can persist and function in a tumor environment that contains high levels of oxidative radicals. We are exploring other cell stressors of high translational relevance such as freeze/thaw stress in adaptive and CD38 knockout cells that will be critical for cell therapy platforms. Disclosures Cichocki: Fate Therapeutics, Inc: Research Funding. Blazar:Kamon Pharmaceuticals, Inc: Membership on an entity's Board of Directors or advisory committees; Five Prime Therapeutics Inc: Co-Founder, Membership on an entity's Board of Directors or advisory committees; Regeneron Pharmaceuticals: Membership on an entity's Board of Directors or advisory committees; Magenta Therapeutics and BlueRock Therapeuetics: Membership on an entity's Board of Directors or advisory committees; Fate Therapeutics, Inc.: Research Funding; RXi Pharmaceuticals: Research Funding; Alpine Immune Sciences, Inc.: Research Funding; Abbvie Inc: Research Funding; Leukemia and Lymphoma Society: Research Funding; Childrens' Cancer Research Fund: Research Funding; KidsFirst Fund: Research Funding; Tmunity: Other: Co-Founder; BlueRock Therapeutics: Membership on an entity's Board of Directors or advisory committees. Bjordahl:Fate Therapeutics, Inc.: Employment. Valamehr:Fate Therapeutics, Inc: Employment. Miller:Fate Therapeutics, Inc: Consultancy, Research Funding; CytoSen: Membership on an entity's Board of Directors or advisory committees; OnKImmune: Membership on an entity's Board of Directors or advisory committees; Dr. Reddys Laboratory: Membership on an entity's Board of Directors or advisory committees; Moderna: Membership on an entity's Board of Directors or advisory committees; GT BioPharma: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding. OffLabel Disclosure: NK cells

Maintaining pluripotency and indefinite self-renewal of embryonic stem cells requires a tight control of the expression of several key stemness factors, particularly Nanog and Oct4 transcription factors. The mammalian SWItch/Sucrose NonFermentable (SWI/SNF) complex contains Brg1 or Brm as its core subunit, along with Brg1-associated factors. Our previous studies have addressed chromatin-remodeling of the Oct4 gene locus in retinoic acid (RA)-treated embryonal carcinoma cell line P19, which involves receptor-interacting protein 140 (RIP140) for heterochromatinization on the proximal promoter region of this gene locus. However, the mechanism of RIP140 action in RA-triggered repressive chromatin-remodeling is unclear. The current study examines RA repression of the Nanog gene and compares the results with RA repression of the Oct4 gene on the chromatin level. The results show a loose nucleosome array on the Nanog gene promoter in undifferentiated embryonic stem cells. On RA treatment, the Nanog gene locus remodels specifically in the CR1 region of its proximal promoter, with the insertion of a nucleosome and compaction of this region. Further, RA induces coordinated chromatin-remodeling of both Nanog and Oct4 gene loci, which requires RA receptor-α, RIP140 and Brm. Finally, in these RA-triggered repressive chromatin-remodeling processes, lysine acetylation of RIP140 is critical for its recruiting Brm.

This study investigated the antioxidant potential and anti-fatigue effects of phenolics extracted from the seed coat of Euryale ferox Salisb. The in vitro antioxidant potentials, including scavenging DPPH, hydroxyl radical activities and reducing power were evaluated. Antioxidant status in vivo was analyzed by SOD, CAT, GSH-Px activities and the MDA content in liver and kidneys of D-galactose-induced aging mice. The anti-fatigue effect was evaluated using an exhaustive swimming test, along with the determination of LDH, BUN and HG content. The phenolic extract possessed notable antioxidant effects on DPPH, hydroxyl radical scavenging and reducing power. The mice which received the phenolic extract showed significant increases of SOD, CAT (except for in the kidney), GSH-Px activities, and a decrease of MDA content. The average exhaustive swimming time was obviously prolonged. Meanwhile, increase of LDH content and decrease of BUN content were observed after mice had been swimming for 15 min. The HG storage of mice was improved in the high and middle dose extract groups compared with the normal group. The contents of total phenols and gallic acid of the extract were determined. Three compounds in the extract were identified as 5,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)-chroman-4-one, 5,7,4-trihydroxyflavanone and buddlenol E. These results suggest that the extract of E. ferox is a promising source of natural antioxidants and anti-fatigue material for use in functional foods and medicines.

The interaction between tumors and their microenvironments leads to a vicious cycle, which strengthens both immune suppression and cancer progression. The present study demonstrates for the first time that tumor-associated dendritic cells (TADCs) are a source of resistin, which is responsible for increasing lung cancer epithelial-to-mesenchymal transition. In addition, large amounts of resistin in the condition medium (CM) of TADCs increase cell migration and invasion, as well as the osteolytic bone metastatic properties of lung cancer cells. Neutralization of resistin from TADC-CM prevents the advanced malignancy-inducing features of TADC-CM. Significantly elevated levels of resistin have been observed in mice transplanted with lung cancer cells, tumor-infiltrating CD11c(+) DCs in human lung cancer samples and lung cancer patients' sera. Induction of lung cancer progression by TADC-derived resistin is associated with increased expression of Wolf-Hirschhorn syndrome candidate 1 (WHSC1), a histone methyltransferase. Resistin-induced WHSC1 increases the dimethylation of histone 3 at lysine 36 and decreases the trimethylation of histone 3 at lysine 27 on the promoter of Twist, resulting in an enhancement of the expression of Twist. Knockdown of WHSC1 by small interfering RNA transfection significantly decreases resistin-mediated cancer progression by decreasing the upregulation of Twist, suggesting that WHSC1 plays a critical role in the regulation of Twist by epigenetic modification. Furthermore, mice that received antiresistin antibodies showed a decreased incidence of cancer development and metastasis. These findings suggest that TADC-derived resistin may be a novel candidate in promoting the development of lung cancer.

Ginger (Zingiberis Rhizoma), a commonly-consumed food supplement, is often sulphur-fumigated during post-harvest handling, but it remains unknown if sulphur fumigation induces chemical transformations in ginger. In this study, the effects of sulphur fumigation on ginger chemicals were investigated by ultra-high performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UHPLC-QTOF-MS/MS)-based metabolomics. The results showed that sulphur fumigation significantly altered the holistic chemical profile of ginger by triggering chemical transformations of certain original components. 6-Gingesulphonic acid, previously reported as a naturally-occurring component in ginger, was revealed to be a sulphur fumigation-induced artificial derivative, which was deduced to be generated by electrophilic addition of 6-shogaol to sulphurous acid. Using UHPLC-QTOF-MS/MS extracting ion analysis with 6-gingesulphonic acid as a characteristic chemical marker, all the commercial ginger samples inspected were determined to be sulphur-fumigated. The research outcomes provide a chemical basis for further comprehensive safety and efficacy evaluations of sulphur-fumigated ginger.