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Effects of alpha-particle irradiation on cell injury and the expressions of insulin sensitive-related genes in 3T3-L1 preadipocyte

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成果类型:
期刊论文
作者:
Sun, Shao-Wei;Gong, Yong-Zhen;Tuo, Qin-Hui;Zhang, Xiao-Ying;Ke-Tang, Chao;Liao, Duan-Fang
通讯作者:
Liao, D.-F.(dfliao66@aliyun.com)
作者机构:
[Tuo, Qin-Hui; Liao, Duan-Fang; Gong, Yong-Zhen; Sun, Shao-Wei] Hunan University of Chinese Medicine, Hanpu Science and Education District, 1# Xiangzui Road, Changsha 410208, Hunan, China
[Ke-Tang, Chao] Institute of Cardiovascular Disease, Life Science Research Center, University of South China, 28# Changsheng Western Road, Hengyang 421001, Hunan, China
[Tuo, Qin-Hui; Ke-Tang, Chao; Liao, Duan-Fang; Gong, Yong-Zhen; Zhang, Xiao-Ying; Sun, Shao-Wei] Division of biochemistry, School of pharmacy and Life Science, University of South China, 28# Changsheng West Road, Hengyang 421001, Hunan, China
[Zhang, Xiao-Ying] Division of Pharmacoproteomics, School of pharmacy and Life Science, University of South China, 28# Changsheng Western Road, Hengyang 421001, Hunan, China
语种:
英文
期刊:
BioTechnology: An Indian Journal
ISSN:
0974-7435
年:
2013
卷:
8
期:
4
页码:
543-550
机构署名:
本校为其他机构
院系归属:
国防科学技术学院
化学化工学院
医学院
药学与生物科学学院
摘要:
Exposure of cells to densely ionizing radiation can initiate a series of molecular and cellular events, which result in the gain and loss of functions in critical regulatory genes and cellular damage. In the present study, alpha-particle radiation-induced insulin resistance and toxic injury to 3T3- L1 preadipocyte were observed, and the mechanism underlying the action was investigated. 3T3-L1 preadipocytes were irradiated by different doses of alpha-particle at 0Gy , 0.3Gy , 0.6Gy , 1.0Gy , 1.5Gy , 2.0Gy , and 4.0Gy . Cloning efficiency was investigated to evaluate the cellular toxic effect of alpha-particle irradiation on cellular viability. Cytokinesis-block micronucleus technique ( CB-MNT ) and single-cell comet assay COMET assay were used to observe alpha-particle irradiation-induced DNA damage. Expression of caveolin-1, IRS-1 (insulin receptor substrate-1 ) and GLUT-4 ( glucose transporter-4 ) were analyzed by western blot and Reverse-transcription PCR (RT-PCR). Alpha-particle irradiation inhibited cloning efficiency, and increased micronucleus cells and the DNA damage in 3T3-L cells in a dose-dependent manner. Alpha-particle irradiation decreased the mRNA expression of GLUT-4 and IRS-1, and inhibited the protein expression of caveolin-1. The present results indicate that alphaparticle irradiation induced toxic injury and insulin resistance in 3T3-L1 preadipocyte, which might be associated with inhibition of GLUT-4 and IRS-1 expression by down-regulating caveolin-1. ©2013 Trade Science Inc. - INDIA.

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