Effect of NO and Fas pathway on T-2 induced apoptosis in chondrocytes

• Published in: Sichuan da xue xue bao. Journal of Sichuan University. Yi xue ban Vol. 37; no. 4; p. 583
• Main Authors: Chen, Jing-hong, Chu, Yong-lie, Cao, Jun-ling, Yang, Zhan-tian, Shi, Zhong-li, Guo, Xiong, Wang, Zhi-lun
• Format: Journal Article
• Language: Chinese
• Published: China 01.07.2006
• Subjects: Apoptosis - drug effects; Cells, Cultured; Chondrocytes - cytology; Chondrocytes - metabolism; fas Receptor - biosynthesis; Humans; Nitric Oxide - biosynthesis; Nitric Oxide Synthase Type II - biosynthesis; T-2 Toxin - toxicity
• ISSN: 1672-173X

To investigate the relationship of T-2 toxin-induced chondrocytes apoptosis with nitric oxide(NO) and Fas apoptosis pathway. Human chondrocytes cultured in vitro were treated with different concentrations of T-2 toxin at different time (1-5 d). Cell viability of the treated cells was measured by MTT assay. Apoptotic ultrostructural changes of the treated cells were observed with electron microscopy. Biological changes of apoptosis were detected by annexin V/PI Flow cytometer (FCM). The levels of NO in culture media were detected by colorimetric method of Griess assay. Nitric oxide synthase (iNOS) and Fas protein were measured by Western blot. In this study the results shown the dose-dependent and time-dependent effects of T-2 toxin, within a range of concentration (1-2000 ng/mL) and a period of time (1-5 d), on the T-2 toxin-treated chondrocytes. Apoptotic body was found in T-2 toxin-treated chondrocytes by electron microscopy. Early-stage apoptosis rate and late-stage apoptosis rate were both increased in T-