کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2580521 1561628 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
4-Hydroxynonenal induces an increase in expression of Receptor for Activating C Kinase 1 (RACK1) in Chinese hamster V79-4 lung cells
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست بهداشت، سم شناسی و جهش زایی
پیش نمایش صفحه اول مقاله
4-Hydroxynonenal induces an increase in expression of Receptor for Activating C Kinase 1 (RACK1) in Chinese hamster V79-4 lung cells
چکیده انگلیسی


• HNE-induced proteomic changes in V79 cells were evaluated by 2D gel electrophoresis.
• 23 proteins were upregulated and 19 proteins were downregulated by HNE.
• Phosphoglycerate kinase 1 and Lamin C were downregulated by HNE.
• RACK1 was upregulated by HNE and this was confirmed by Q-RT-PCR and Western blots.
• The role of RACK1 in mediating HNE-induced apoptosis was confirmed.

4-Hydroxy-trans-2-nonenal (HNE) is a cytotoxic α,β-unsaturated aldehyde implicated in the pathology of several diseases that have an oxidative stress mechanism, including atherosclerosis, diabetes, alcohol-induced liver disease, and neurodegenerative disorders. As the most toxic aldehydic product of lipid peroxidation, HNE is known to exert a range of biological effects in a concentration-dependent manner. In this study, the effect of HNE on the levels of proteins in V79-4 Chinese hamster lung cells was investigated using two-dimensional electrophoresis and mass spectrometry. The results revealed that the expression of 23 proteins was increased by at least 2-fold and the expression of 19 proteins was decreased by at least 2-fold after exposure to 10 μM HNE for 24 h. Decreased proteins included the metabolic enzyme phosphoglycerate kinase 1 (PGK1), levels of which were decreased by 47%. Levels of the apoptotic indicator Lamin C were decreased by 33%. In contrast, levels of the scaffolding protein Receptor for Activating C Kinase 1 (RACK1) were increased by 2-fold after treatment with 10 μM HNE for 24 h, and this was confirmed using quantitative PCR of reverse-transcribed mRNA and Western blots. The role of RACK1 in mediating the induction of apoptosis in response to 10 μM HNE was confirmed using RACK1-specific siRNA. The results from this study provide new information on the mechanism of adaptive stress response to HNE and also identify potential new biomarkers of exposure to HNE.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemico-Biological Interactions - Volume 213, 25 April 2014, Pages 13–20
نویسندگان
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