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Articles by Gang Ren
Total Records ( 2 ) for Gang Ren
  Yongzhen Huang , Enping Zhang , Jing Wang , Yongtao Huai , Xianyong Lan , Liang Ma , Zhuanjian Li , Gang Ren , Fuying Chen , Chuzhao Lei , Juqiang Wang and Hong Chen
  It is known that the SREBP1c gene is an important gene responsible for adipogenesis and regulation of the expression of genes controlling fatty acid biosynthesis. Its expression levels increase in parallel with obesity. Therefore, the present study focused on screening the genetic variation within bovine SREBP1c gene and analyzing its effect on growth traits in 1035 individuals belonging to four Chinese cattle breeds (QC, NY, JX, CH) using PCR-SSCP, DNA sequencing, and forced PCR-RFLP methods. The results revealed two novel mutations: NC_007317: g. 10781 C > A (457aa), 10914 G > A (502aa). Association analysis with growth traits in the Nangyang breed indicated that: The SNPs in the bovine SREBP1c gene had significant effects on body weight and average daily gain at birth, 6 and 12 months old (P < 0.05 or P < 0.01). Therefore, these results suggest that the SREBP1c gene is a strong candidate gene that affects growth traits in cattle.
  Shi-Jun Hu , Gang Ren , Ji-Long Liu , Zhen-Ao Zhao , Yong-Sheng Yu , Ren-Wei Su , Xing-Hong Ma , Hua Ni , Wei Lei and Zeng-Ming Yang
  MicroRNAs (miRNAs) are 21-24-nucleotide non-coding RNAs found in diverse organisms. Although hundreds of miRNAs have been cloned or predicted, only very few miRNAs have been functionally characterized. Embryo implantation is a crucial step in mammalian reproduction. Many genes have been shown to be significantly changed in mouse uterus during embryo implantation. However, miRNA expression profiles in the mouse uterus between implantation sites and inter-implantation sites are still unknown. In this study, miRNA microarray was used to examine differential expression of miRNAs in the mouse uterus between implantation sites and inter-implantation sites. Compared with inter-implantation sites, there were 8 up-regulated miR-NAs at implantation sites, which were confirmed by both Northern blot and in situ hybridization. miR-21 was highly expressed in the subluminal stromal cells at implantation sites on day 5 of pregnancy. Because miR-21 was not detected in mouse uterus during pseudopregnancy and under delayed implantation, miR-21 expression at implantation sites was regulated by active blastocysts. Furthermore, we showed that Reck was the target gene of miR-21. Our data suggest that miR-21 may play a key role during embryo implantation.
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