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SQSTM1/p62 interacts with FKBP38 and regulates cell cycle in Cashmere goat foetal fibroblasts

文献类型： 外文期刊

作者： He, Qiburi 1 ; Wang, Yanfeng 1 ; Zhao, Keyu 1 ; Binderiya, Uyanga 1 ; Bao, Lili 1 ; Zhao, Pingping 1 ; Yan, Dandan 1 ; Ha 1 ;

作者机构： 1.Inner Mongolia Univ, Coll Life Sci, Inner Mongolia Key Lab Mol Regulat Cell, 235 Da Xue West Rd, Hohhot 010021, Peoples R China

2.Inner Mongolia Acad Agr & Anim Husb Sci, Hohhot, Peoples R China

3.Inner Mongolia Med Univ, Coll Basic Med Sci, Hohhot, Peoples R China

关键词： Cell cycle; SQSTM1; p62; FKBP38; goat foetal fibroblasts

期刊名称：JOURNAL OF APPLIED ANIMAL RESEARCH （ 影响因子：1.63； 五年影响因子：1.727 ）

ISSN： 0971-2119

年卷期： 2018 年 46 卷 1 期

页码：

收录情况： SCI

摘要： SQSTM1 (sequestosome 1, also known as p62) is a multifunctional scaffold protein implicated in diverse cell physiology processes, such as autophagy, cell signalling, and protein turnover. FKBP38 (FK506-binding protein 38) is a member of FKBPs family and plays a key role in various cellular processes, including signalling transduction, embryonic development and apoptosis. In order to explore the role of SQSTM1/p62 gene in cell-cycle progression and proliferation of goat foetal fibroblast (GFbs), SQSTM1/p62 gene was cloned and characterized. Furthermore, the yeast two-hybrid screening system was used to identify the interaction between SQSTM1/p62 and FKBP38. The results suggested that SQSTM1/p62 directly interacts with FKBP38. Overexpression vector pIRES-EGFP-SQSTM1/p62 and shRNA eukaryotic expression vector pRNAT-U6.1-shSQSTM1/p62 which harboured siRNA targeting the SQSTM1/p62 mRNA were constructed. The overexpression of SQSTM1/p62 gene in GFbs significantly increase the S-phase cells compared with control cells (p<.05). Furthermore, SQSTM1/p62 gene silencing in GFbs leads to a significant decrease of S-phase cells and cell cycle arrest compared with control cells (p<.05). These data indicate that SQSTM1/p62 gene plays an important role in cell-cycle and proliferation of Cashmere GFbs.Abbreviations: Aba: aureobasidin A; EIF1: eukaryotic translation initiation factor 1; FKBP: FK506-binding protein; FKBP38: FK506-binding protein 38; GFbs: goat foetal fibroblast; mTOR: mammalian target of rapamycin; PDLIM7: PDZ and LIM domain 7; SD: standard dropout; SQSTM1/p62: sequestosome 1

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