16 results on '"Mengyi Han"'
Search Results
2. A model‐based meta‐analysis of immune‐related adverse events during immune checkpoint inhibitors treatment for <scp>NSCLC</scp>
- Author
-
Renwei, Zhang, Daming, Kong, Rong, Chen, Yuchen, Guo, Weizhe, Jian, Mengyi, Han, and Tianyan, Zhou
- Subjects
Clinical Trials as Topic ,Lung Neoplasms ,Carcinoma, Non-Small-Cell Lung ,Modeling and Simulation ,Programmed Cell Death 1 Receptor ,Humans ,Pharmacology (medical) ,Immunotherapy ,Immune Checkpoint Inhibitors ,B7-H1 Antigen - Abstract
Immune checkpoint inhibitors (ICIs) have become a vital part of the therapeutic landscape for non-small cell lung cancer (NSCLC) in recent years benefiting from their remarkable efficacy. However, ICIs are associated with potentially life-threatening immune-related adverse events (irAEs). This study aims to quantify dose dependence and additional influencing factors of both any grade and grade greater than or equal to 3 irAEs in patients with NSCLC treated by ICIs. The trial-level irAE data was collected and pooled from 129 cohorts in 81 clinical studies. A logit-transformed meta-regression model was applied to derive the quantitative relationship of irAE rate and ICI exposure. Programmed cell death-1 (PD-1) or programmed cell death ligand-1 (PD-L1) inhibitors showed no dose dependence in patients with NSCLC, whereas cytotoxic T lymphocyte-associated antigen 4 (CTLA-4) inhibitors exhibited a statistically significant dose dependence when used alone or combined with PD-1 or PD-L1 inhibitors. Besides, therapy line and combination of ICIs with chemotherapy or target therapy were significant covariates. Hopefully, the results of this study can improve clinicians' awareness of irAEs and be helpful for clinical decisions during ICI treatment for NSCLC.
- Published
- 2022
- Full Text
- View/download PDF
3. A stochastic population pharmacodynamic model of QAP14 in the treatment of lung metastases of 4T1 breast cancer
- Author
-
Ling Yong, Daming Kong, Guoshu Chen, Tianyan Zhou, Mengyi Han, Xiaoxue Yan, and Yuchen Guo
- Subjects
Oncology ,medicine.medical_specialty ,education.field_of_study ,Lung ,business.industry ,Population ,Lung metastasis ,Pharmaceutical Science ,medicine.disease ,Breast cancer ,medicine.anatomical_structure ,Internal medicine ,Pharmacodynamics ,medicine ,education ,business - Published
- 2021
- Full Text
- View/download PDF
4. Cobalt-embedded few-layered carbon nanosheets toward enhanced hydrogen evolution: Rational design and insight into structure-performance correlation
- Author
-
Ge Wang, Ang Li, Mengyi Han, Xingtian Shu, Junjun Lv, Xiao Chen, Hongyi Gao, Dandan Jia, and Liwen Xing
- Subjects
Fuel Technology ,Materials science ,chemistry ,Chemical engineering ,Electrochemistry ,Rational design ,Energy Engineering and Power Technology ,chemistry.chemical_element ,Hydrogen evolution ,Into-structure ,Carbon ,Cobalt ,Energy (miscellaneous) - Published
- 2021
- Full Text
- View/download PDF
5. QAP21 reduces stemness and mobility of metastatic breast cancer cells involving D1DR activation
- Author
-
Ye Yao, Guoshu Chen, Xiaoxue Yan, Mengyi Han, Ling Yong, Junsheng Xue, Yuchen Guo, Tianyan Zhou, and Qingyu Yao
- Subjects
business.industry ,Cell Mobility ,Cancer research ,Pharmaceutical Science ,Medicine ,business ,medicine.disease ,Metastatic breast cancer - Published
- 2021
- Full Text
- View/download PDF
6. Metal-Organic Frameworks Decorated Cu2O Heterogeneous Catalysts for Selective Oxidation of Styrene
- Author
-
Mengyi Han, Xue Tang, Peng Wang, Zhiyong Zhao, Xiaohua Ba, Yu Jiang, and Xiaowei Zhang
- Subjects
metal-organic frameworks ,Cu2O ,styrene oxidation ,H2O2 ,base free ,Physical and Theoretical Chemistry ,Catalysis - Abstract
The selective oxidation of styrene with highly efficient, environmentally benign, and cost-effective catalysts are of great importance for sustainable chemical processes. Here, we develop an in situ self-assembly strategy to decorate Cu-based metal-organic framework (MOF) Cu-BDC-NH2 nanocrystals on Cu2O octahedra to construct a series of Cu2O@Cu-BDC-NH2 catalysts for selective oxidation of styrene. Using H2O2 as green oxidants, the optimized sample of Cu2O@Cu-BDC-NH2-8h could achieve 85% styrene conversion with 76% selectivity of benzaldehyde under a mild condition of 40 °C. The high performance of the as-prepared heterogeneous catalysts was attributed to the well-designed Cu+/Cu2+ interface between Cu2O and Cu-BDC-NH2 as well as the porous MOF shells composed of the uniformly dispersed Cu-BDC-NH2 nanocrystals. The alkaline properties of Cu2O and the –NH2 modification of MOFs enable the reaction to be carried out in a base-free condition, which simplifies the separation process and makes the catalytic system more environmentally friendly. Besides the Cu2O octahedra (od-Cu2O), the Cu2O cuboctahedrons (cod-Cu2O) were synthesized by adjusting the added polyvinyl pyrrolidone, and the obtained cod-Cu2O@Cu-BDC-NH2 composite also showed good catalytic performance. This work provides a useful strategy for developing highly efficient and environmentally benign heterogeneous catalysts for the selective oxidation of styrene.
- Published
- 2022
- Full Text
- View/download PDF
7. In‐situ Self‐transformation Synthesis of N‐doped Carbon Coating Paragenetic Anatase/Rutile Heterostructure with Enhanced Photocatalytic CO 2 Reduction Activity
- Author
-
Xiaowei Zhang, Xiao Chen, Ge Wang, Siyuan Chen, Hongyi Gao, Mengyi Han, and Wenjun Dong
- Subjects
In situ ,Anatase ,Materials science ,Organic Chemistry ,Heterojunction ,engineering.material ,Catalysis ,Transformation (music) ,Inorganic Chemistry ,Chemical engineering ,Coating ,Rutile ,Photocatalysis ,engineering ,Metal-organic framework ,Physical and Theoretical Chemistry - Published
- 2020
- Full Text
- View/download PDF
8. Carbon nanotube bundles assembled flexible hierarchical framework based phase change material composites for thermal energy harvesting and thermotherapy
- Author
-
Wenjun Dong, Mengyi Han, Guangtong Hai, Hongyi Gao, Siyuan Chen, Xiao Chen, Ge Wang, Dandan Jia, Liwen Xing, and Piao Cheng
- Subjects
Air purification ,Materials science ,Renewable Energy, Sustainability and the Environment ,Composite number ,Energy Engineering and Power Technology ,02 engineering and technology ,Polyethylene glycol ,Carbon nanotube ,Thermal energy harvesting ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Phase-change material ,Polyvinylidene fluoride ,0104 chemical sciences ,law.invention ,chemistry.chemical_compound ,chemistry ,law ,General Materials Science ,Composite material ,0210 nano-technology ,Layer (electronics) - Abstract
Conventional single thermal nature of phase change materials (PCMs) seriously obstructs their frontier applications. Herein, we designed advanced carbon nanotube (CNT) bundles assembled flexible hierarchical framework based phase change material composites for high-performance thermotherapy of allergic rhinitis. Hierarchically interconnected 3D freestanding flexible CNT sponge was constructed via a facile organic solvent-free route using table salt as a sacrificial template. The resulting hierarchical CNT sponge serves as an ideal compatible supporting host and polyethylene glycol (PEG) serves as an excellent thermal energy guest. Subsequently, we designed advanced portable integrated functional mask consisting of outer air purification layer and inner thermal regulation layer for the thermotherapy of allergic rhinitis, in which pristine CNT sponge serves as an excellent particulate matter capturer and PEG-infiltrated CNT sponge serves as a superior thermal regulator. Strikingly, our uniquely constructed flexible CNT sponge-involved composite PCMs assisted by polyvinylidene fluoride (PVDF) harvest high-performance thermotherapy (~33 min of the plateau at ~43.5 °C). The corresponding medical results (HE staining and Wrights staining) further indicate that our designed thermotherapy mask can significantly reduce the inflammatory injury of nasal mucosa. Additionally, pristine hierarchical CNT sponge guarantees the inhaled air quality and enhances the thermotherapy effect. This synthetic strategy can be scaled up for large-scale production. This novel functional host-guest strategy creates an innovative platform for developing advanced multifunctional PCMs with multiple fascinating peculiarities and desired functional properties and teaches an old dog new tricks.
- Published
- 2020
- Full Text
- View/download PDF
9. Atomically dispersed ruthenium sites on whisker-like secondary microstructure of porous carbon host toward highly efficient hydrogen evolution
- Author
-
Xingtian Shu, Hongyi Gao, Song Hong, Tao Zhiping, Mengyi Han, Lirong Zheng, Ge Wang, Xiubing Huang, Jie Zhao, Wenjun Dong, Guangtong Hai, Xiao Chen, Dandan Jia, and Liwen Xing
- Subjects
Materials science ,Renewable Energy, Sustainability and the Environment ,chemistry.chemical_element ,02 engineering and technology ,General Chemistry ,Conductivity ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Electrochemistry ,Microstructure ,01 natural sciences ,Dissociation (chemistry) ,0104 chemical sciences ,Ruthenium ,Chemical engineering ,chemistry ,Whisker ,Molecule ,General Materials Science ,0210 nano-technology ,Pyrolysis - Abstract
Owing to the high abundance, good conductivity and excellent tolerance to harsh environment, carbon host materials have recently attracted considerable research interest in the fields of electrochemical hydrogen evolution reaction (HER). However, the deficiency of intrinsic active sites within the carbon host materials substantially gives rise to an inferior HER performance. In this work, atomically dispersed ruthenium active sites are deliberately introduced into the carbon host structure by controlled pyrolysis of Ru-doped ZIF-8. With atomic Ru sites on a unique whisker-like secondary microstructure and a favorable porous texture, the optimal product exhibits a high intrinsic activity as well as robust durability, which especially outperforms the Pt/C benchmarking in alkaline media. A combination of control experiments and theoretical calculations demonstrates that atomically dispersed Ru sites within the carbon host matrix serve as the dominant catalytically active sites, and remarkably optimize the free energy of water molecule dissociation during the Volmer step, thus boosting the HER performance.
- Published
- 2020
- Full Text
- View/download PDF
10. Direct Z-scheme heterojunction of PCN-222/CsPbBr3 for boosting photocatalytic CO2 reduction to HCOOH
- Author
-
Peng Wang, Xiaohua Ba, Xiaowei Zhang, Hongyi Gao, Mengyi Han, Zhiyong Zhao, Xiao Chen, Linmeng Wang, Xuemei Diao, and Ge Wang
- Subjects
General Chemical Engineering ,Environmental Chemistry ,General Chemistry ,Industrial and Manufacturing Engineering - Published
- 2023
- Full Text
- View/download PDF
11. Application of a count data model to evaluate the anti-metastatic efficacy of QAP14 in 4T1 breast cancer allografts
- Author
-
Yuchen, Guo, Ling, Yong, Qingyu, Yao, Mengyi, Han, Junsheng, Xue, Weizhe, Jian, and Tianyan, Zhou
- Subjects
Statistics and Probability ,Mice, Inbred BALB C ,Lung Neoplasms ,General Immunology and Microbiology ,Applied Mathematics ,General Medicine ,Fenoldopam ,Allografts ,General Biochemistry, Genetics and Molecular Biology ,Mice ,Cell Line, Tumor ,Modeling and Simulation ,Animals ,Neoplasm Metastasis ,General Agricultural and Biological Sciences - Abstract
Dopamine D1 receptor (D1DR) is proved to be a promising target to prevent tumor metastasis, and our previous studies showed that QAP14, a potent anti-cancer agent, exerted inhibitory effect on lung metastasis via D1DR activation. Therefore, the purpose of the study was to establish count data models to quantitatively characterize the disease progression of lung metastasis and assess the anti-metastatic effect of QAP14. Data of metastatic progression were collected in 4T1 tumor-bearing mice. Generalized Poisson distribution best described the variability of metastasis counts among the individuals. An empirical PK/PD model was developed to establish mathematical relationships between steady plasma concentrations of QAP14 and metastasis growth dynamics. The latency period of metastasis was estimated to be 12 days after tumor implantation. Our model structure also fitted well to other D1DR agonists (fenoldopam and l-stepholidine) which had inhibitory impact on breast cancer lung metastasis likewise. QAP14 40 mg/kg showed the best inhibitory efficacy, for it provided the longest prolongation of metastasis-free periods compared with fenoldopam or l-stepholidine. This study provides a quantitative method to describe the lung metastasis progression of 4T1 allografts, as well as an alternative PD model structure to evaluate anti-metastatic efficacy.
- Published
- 2023
- Full Text
- View/download PDF
12. QAP14 suppresses breast cancer stemness and metastasis via activation of dopamine D1 receptor
- Author
-
Guoshu Chen, Yuchen Guo, Ye Yao, Ling Yong, Xiaoxue Yan, Tianyan Zhou, Wei-Zhe Jian, Junsheng Xue, and Mengyi Han
- Subjects
0301 basic medicine ,Epithelial-Mesenchymal Transition ,Breast Neoplasms ,Article ,Metastasis ,Mice ,03 medical and health sciences ,0302 clinical medicine ,Breast cancer ,Downregulation and upregulation ,Cell Movement ,In vivo ,Cell Line, Tumor ,medicine ,Animals ,Humans ,Pharmacology (medical) ,Neoplasm Metastasis ,Protein kinase B ,Pharmacology ,Chemistry ,Receptors, Dopamine D1 ,Correction ,Cancer ,General Medicine ,medicine.disease ,Metastatic breast cancer ,030104 developmental biology ,Apoptosis ,030220 oncology & carcinogenesis ,Neoplastic Stem Cells ,Cancer research ,Female - Abstract
Breast cancer is the second leading cause of cancer-related mortality in women, mainly due to metastasis, which is strongly associated with cancer stemness. Our previous studies showed that the eradication of cancer stem-like cells (CSCs) may be related to the activation of dopamine D1 receptor (D1DR). This study aimed to explicitly demonstrate the target-role of D1DR activation in antimetastatic therapy and to investigate the potential efficacy and the underlying D1DR-related mechanisms of QAP14, a new oral compound. 4T1, MDA-MB-231, and D1DR-knockout 4T1 (4T1-D1DR) cells were selected for in vitro study, while 4T1 and 4T1-D1DR cells were further used to establish a mouse allograft model for in vivo study. Our results showed that D1DR is abundantly expressed in both 4T1 and MDA-MB-231 cells and that knocking out D1DR in 4T1 cells accelerated migration and invasion in vitro as well as lung metastasis in vivo. QAP14 inhibited colony formation, cell motility, mammosphere formation and CSC frequency, induced CSC apoptosis and D1DR expression, and increased cAMP/cGMP levels. Additionally, QAP14 showed inhibitory effects on tumor growth and lung metastasis with acceptable safety in vivo. Knocking out D1DR almost completely abolished the efficacy, confirming that QAP14 exhibits its anti-CSC and antimetastatic effects through D1DR activation. The underlying mechanisms involved suppression of the nuclear factor κB (NF-κB)/protein kinase B (Akt) pathway and consequent downregulation of both epithelial-to-mesenchymal transition (EMT) process and cancer stemness. In summary, our findings suggest a potential candidate compound, QAP14, as well as a potential target, D1DR, for metastatic breast cancer therapy.
- Published
- 2021
13. In situ semi-sacrificial template-assisted growth of ultrathin metal–organic framework nanosheets for electrocatalytic oxygen evolution
- Author
-
Xiaowei Zhang, Wang Peng, Mengyi Han, Hongyi Gao, Ge Wang, Rui Dang, Piao Cheng, Siyuan Chen, and Zhiyong Zhao
- Subjects
Materials science ,General Chemical Engineering ,Oxygen evolution ,Nanotechnology ,Heterojunction ,General Chemistry ,Conductivity ,Electrocatalyst ,Industrial and Manufacturing Engineering ,Bimetal ,Metal ,visual_art ,visual_art.visual_art_medium ,Environmental Chemistry ,Metal-organic framework ,Nanoscopic scale - Abstract
Ultrathin Bimetal MOF nanosheets (BMOFNs) are regarded as effective electrocatalyst for Oxygen evolution reaction (OER) because of their abundance of coordinatively unsaturated metal atoms, enhanced mass permeability and coupling effect between bimetals, while the limited conductivity and stability severely hinders their widespread application. Here, we develop an in situ semi-sacrificial template-assisted strategy to grow ultrathin BMOFNs on NiCo-LDH to construct non-noble metal electrocatalysts that are both active and stable. The optimized NiCo-LDH@MOFs heterostructure exhibits a superior electrocatalytic activity with accelerated electronic transfer and significantly enhanced durability of over 300 h. An advanced AFM-IR technology is introduced for the first time to investigate the formation of the 2D-2D heterogeneous structure in NiCo-LDH@MOFs, providing insights into the morphology-structure-composition evolution of the electrocatalyst at a nanoscale. This work demonstrates an in-situ growth strategy to achieve high-performance ultrathin MOF-based electrocatalysts, and provides advanced combinatorial characterization techniques to monitor the material growth process.
- Published
- 2021
- Full Text
- View/download PDF
14. Mechanistic Pharmacokinetic/Pharmacodynamic Model of Sunitinib and Dopamine in MCF-7/Adr Xenografts: Linking Cellular Heterogeneity to Tumour Burden
- Author
-
Siyuan Wang, Wei Lu, Mengyi Han, Fangran Hao, Xiao Zhu, and Tianyan Zhou
- Subjects
Combination therapy ,Dopamine ,Pharmaceutical Science ,Mice, Nude ,Breast Neoplasms ,030226 pharmacology & pharmacy ,Models, Biological ,03 medical and health sciences ,0302 clinical medicine ,In vivo ,Antineoplastic Combined Chemotherapy Protocols ,medicine ,Sunitinib ,Animals ,Humans ,Cell Proliferation ,Mice, Inbred BALB C ,Chemistry ,Cancer ,Cell Differentiation ,medicine.disease ,Xenograft Model Antitumor Assays ,Tumor Burden ,Apoptosis ,030220 oncology & carcinogenesis ,Concomitant ,Cancer research ,MCF-7 Cells ,Neoplastic Stem Cells ,Female ,Animal studies ,medicine.drug - Abstract
The self-renewal and differentiation of cancer stem-like cells (CSCs) leads to cellular heterogeneity, causing one of the greatest challenges in cancer therapy. Growing evidence suggests that CSC-targeting therapy enhances the effect of concomitant antitumour therapy. To gain an in-depth understanding of this enhanced effect, the kinetic profile of estimated CSC frequency (the fraction of CSCs in tumour) was evaluated for in vivo characterization of cellular heterogeneity using sunitinib and dopamine as a paradigm combination therapy. Female MCF-7/Adr xenografted Balb/c nude mice were treated with sunitinib (p.o., 20 mg/kg) and dopamine (i.p., 50 mg/kg), alone or in combination. Estimated CSC frequency and tumour size were measured over time. Mechanistic PK/PD modelling was performed to quantitatively describe the relationship between drug concentration, estimated CSC frequency and tumour size. Sunitinib reduced tumour size by inducing apoptosis of differentiated tumour cells (DTCs) and enriched CSCs by stimulating its proliferation. Dopamine exhibited anti-CSC effects by suppressing the capacity of CSCs and inducing its differentiation. Simulation and animal studies indicated that concurrent administration was superior to sequential administration under current experimental conditions. Alongside tumour size, the current study provides mechanistic insights into the estimation of CSC frequency as an indicator for cellular heterogeneity. This forms the conceptual basis for in vivo characterization of other combination therapies in preclinical cancer studies.
- Published
- 2019
15. Flexible monolithic phase change material based on carbon nanotubes/chitosan/poly(vinyl alcohol)
- Author
-
Piao Cheng, Yuanyuan Chen, Mengyi Han, Xiao Chen, Panpan Liu, Ge Wang, Hongyi Gao, and Liwen Xing
- Subjects
Vinyl alcohol ,Materials science ,General Chemical Engineering ,Composite number ,02 engineering and technology ,General Chemistry ,Polyethylene glycol ,Carbon nanotube ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Phase-change material ,Industrial and Manufacturing Engineering ,0104 chemical sciences ,law.invention ,Chitosan ,chemistry.chemical_compound ,Crystallinity ,chemistry ,law ,Ultimate tensile strength ,Environmental Chemistry ,Composite material ,0210 nano-technology - Abstract
Currently, most reported composite phase change materials (PCMs) are powdery shape, which require secondary processing for practical applications. Although some monolithic composite PCMs have been developed, their flexibility usually undergoes a remarkable reduction or even complete disappearance when supporting material s are infiltrated with PCMs. To solve this problem, we fabricated a flexible supporting material with a folded layer-bridge network structure by dispersing carbon nanotubes (CNTs) in acetic acid solution of chitosan (CS) with poly(vinyl alcohol) (PVA) using a directional freezing method. Then CS/PVA/CNTs (CPC) scaffold was infiltrated with polyethylene glycol (PEG) to prepare PEG@CPC composite PCM. The resulting flexible composite PCM displays excellent mechanical properties, such as high tensile strength of 2.42 MPa and bending resistance of >100 cycles. Moreover, it displays outstanding thermal properties, such as high crystallinity of close to 100% and encapsulation ratio of 92.6 wt%. This work provides a simple method for preparation of flexible monolithic composite PCMs for many potential applications, such as wearable fitting-skin temperature-controlled materials.
- Published
- 2020
- Full Text
- View/download PDF
16. In situ one-step construction of monolithic silica aerogel-based composite phase change materials for thermal protection
- Author
-
Panpan Liu, Dangjia Chen, Mengyi Han, Ge Wang, Xiao Chen, Junjun Lv, Piao Cheng, and Hongyi Gao
- Subjects
Materials science ,business.industry ,Mechanical Engineering ,Composite number ,Aerogel ,02 engineering and technology ,Temperature cycling ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Industrial and Manufacturing Engineering ,0104 chemical sciences ,Contact angle ,Compressive strength ,Thermal conductivity ,Mechanics of Materials ,Thermal insulation ,Latent heat ,Ceramics and Composites ,Composite material ,0210 nano-technology ,business - Abstract
Currently, numerous studies are devoted to the pursuit of thermal conductivity enhancement of phase change materials (PCMs). On the contrary, few researches are reported to reduce the thermal conductivity of PCMs. Generally, the PCMs with reduced thermal conductivity have great potential in thermal protection application. Herein, we propose a novel in situ one-step strategy to facilely prepare monolithic silica aerogel-based composite PCMs. The silica aerogels possess low thermal conductivity and are used to encapsulate PCMs to prepare composite PCMs, such as polyethylene glycol (PEG) or octadecanol. Compare with PEG2000@silica aerogel, the resulting monolithic octadecanol@silica aerogel have low thermal conductivity (0.12 W m−1 K−1), high latent heat (127.73 J/g), large compressive strength (11 MPa), good hydrophobicity (contact angle 124°) and superior thermal cycling stability. This monolithic silica aerogel-based composite PCMs could prolong heat preservation duration due to the synergistic effect between low thermal conductivity and high latent heat of composite PCMs, showing potential promise for direct application to the thermal insulation and thermal protection device. More importantly, this in situ one-step synthesis strategy is universal for different types of PCMs.
- Published
- 2020
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.