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Oral cancer is the sixth most common cancer worldwide and can be life-threatening if not diagnosed and treated in its early stages. Jing-Si herbal tea (JSHT), containing eight traditional Chinese medicine-based herbs, is known to suppress the malignancy, growth, and metastasis of several tumour cells, including breast, lung, and colon cancer cells. However, the pharmacological effect of JSHT on oral cancer progression is still unclear. In this study, we evaluated the potential of JSHT to arrest the development of oral cancer via induction of cell death by reactive oxygen species (ROS) accumulation and inhibition of migration, invasion, and epithelial-to-mesenchymal transition (EMT). For this purpose, we employed the human tongue squamous cell carcinoma human tongue squamous carcinoma cell line, which we treated with different JSHT concentrations for 24 hours, and assessed cell viability, migration, and wound healing capabilities, together with western blotting for measuring expression levels of EMT markers. Survival, migration/invasion ability, EMT, and ROS production in the human tongue squamous carcinoma human tongue squamous carcinoma and FaDu human pharynx squamous cell carcinoma cell line were decreased by JSHT treatment via Lon protease-independent mechanisms. This study demonstrates that JSHT could be regarded as a candidate new supplement to existing anticancer therapies and an alternative, orally administered healthcare product for treating oral squamous cell carcinoma. [ABSTRACT FROM AUTHOR]

Abstract: Human alcohol dehydrogenase (ADH) constitutes a complex family with diversified functions. Rabbit antihuman class I, II, III, and IV ADH antisera were prepared and used as probes to compare cross-reactivity with the isozymes across classes by semiquantitative Western blotting and quantitative enzyme-linked immunosorbent assay (ELISA). The interclass cross-reactivities with the noncognate isozymes by ELISA, generally ∼0–35%, appeared considerably lower than those of the intraclass cross-reactivities except with the class IV isozyme. The anti-ADH1B1, ADH1C1, and ADH3 antisera, but not the anti-ADH2, exhibited ∼80% cross-reactivity with ADH4. The intraclass cross-reactivities among class I isozymes ADH1A, ADH1B1, and ADH1C1 with anti-ADH1B1 or anti-ADH1C1 antisera were ∼90%. Immunohistochemistry detecting with class-specific antibodies for ADH1–4 isolated from the corresponding antisera demonstrated that ADH4 was the predominant isoform expressed in the basal and suprabasal layer of human esophagus mucosa, whereas it was virtually devoid in the adjacent squamous cell carcinoma. Thus, the setup is more valuable for scanning ADH expression at protein level in different tissues and under different conditions, and maybe not as a tool for classification. [Copyright &y& Elsevier]

Cyanidin-3-O-glucoside (C3G), a dietary anthocyanin, possesses various biological properties, including alleviating endoplasmic reticulum (ER) stress. This study examined the effect of C3G on periodontitis via ER stress in rats. Periodontitis was induced by placing silk sutures around maxillary second molars. C3G (0, 3, or 9 mg/kg) was fed on the day before ligation (10 rats/group). Further, 10 non-ligation control rats received deionized water. On day 8, gingivae were obtained to determine CCAAT/enhancer-binding protein homologous protein (CHOP), c-Jun N-terminal kinase (JNK), phospho-JNK (p-JNK), and nuclear factor-κB (NF-κB) by immunoblotting. Periodontal destruction was evaluated using micro-computed tomography (μCT) and histology. Gingival expression of CHOP, p-JNK/JNK, and NF-κB significantly increased in ligation rats (0 mg/kg C3G) than that in controls. However, protein expression in ligation groups presented a negative association with C3G concentration. By μCT, the distance of cemento-enamel junction to bone significantly increased in ligation groups; however, distances showed a negative association with C3G concentration. In the region of interest, bone volume and trabecular thickness and number significantly decreased in ligation groups but they were positively associated with C3G concentration. In terms of trabecular separation, opposite results were found. Histologically, infiltrated connective tissue (ICT) and periodontal destructions increased in ligation groups; however, they were negatively associated with C3G concentration. Moreover, ICT area is positively correlated with μCT- and histologically measured destructions and protein expression of CHOP, p-JNK/JNK, or NF-κB. C3G promotes favorable modulation of ER stress and alleviates destruction of periodontitis, which may imply a new strategy. • C3G reduced the ligature-enhanced CHOP, p-JNK/JNK, and NF-кB in gingiva of rat. • C3G alleviated the ligation-induced periodontal damages. • Correlations between inflammation, injuries, and ER stress were observed. [ABSTRACT FROM AUTHOR]