Polypeptide from Chlamys farreri inhibits UVB-induced apoptosis of HaCaT cells via iNOS/NO and HSP90
文献类型: 外文期刊
作者: Zhang Zhengyang 1 ; Liu Xiaojin 1 ; Liu Tuo 2 ; Yan Lin 1 ; Wang Yuejun 3 ; Wang Chunbo 1 ;
作者机构: 1.Qingdao Univ, Dept Pharmacol, Coll Med, Qingdao 266071, Peoples R China
2.Qingdao Univ, Dept Publ Hlth, Coll Med, Qingdao 266071, Peoples R China
3.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China
关键词: apoptosis;HaCaT cells;HSP;iNOS/NO;Polypeptide from Chlamys farreri (PCF);ultraviolet B (UVB)
期刊名称:CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY ( 影响因子:1.068; 五年影响因子:0.983 )
ISSN: 0254-4059
年卷期: 2009 年 27 卷 3 期
页码:
收录情况: SCI
摘要: Polypeptide from Chlamys farreri (PCF) is a novel marine bioactive product that was isolated from the gonochoric Chinese scallop Chlamys farreri, and was found to be an effective antioxidant in our recent studies. In this study, we investigated the effect of PCF on ultraviolet B (UVB)-induced apoptosis of HaCaT cells and the intracellular signaling pathways involved. Pretreatment with the inducible nitric oxide synthase (iNOS) inhibitor S-methylisothiourea sulfate inhibited UVB-induced apoptosis, indicating that iNOS and NO play important roles in apoptosis. On the other hand, the inhibition of UVB-induced apoptosis in the immortalized keratinocyte (HaCaT) cells by PCF was estimated using a DNA ladder. PCF treatment inhibited UVB-induced iNOS activation, as determined by RT-PCR, NO production, as determined by ESR, and up-regulated. heat shock protein (HSP) 90 activation, as determined by Western blotting. Our results indicate that iNOS and NO are involved in UVB-induced apoptosis of HaCaT cells and the protective effect of PCF against UVB irradiation is exerted by suppressing the expression of iNOS, followed by inhibition of NO release and enhanced activation of HSP90.
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