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The polymorphisms of bovine PCSK1 gene and their associations with growth traits
Limin Shan,Jiajie Sun,Chunlei Zhang,Xingtang Fang,Chuzhao Lei,Xianyong Lan,Hong Chen 한국유전학회 2011 Genes & Genomics Vol.33 No.1
Proprotein convertase 1 (PCSK1) is an endopeptidase involved in proteolytic processing of peptide hormone precursors in granules of the regulated secretory pathway of endocrine cells and mutations in PCSK1 gene are thought to cause obesity. In the present study, based on PCR-SSCP and DNA sequencing methods, polymorphisms of the PCSK1 gene were detected in 858 individuals from five breeds (Nanyang cattle, Qinchuan cattle, Jiaxian cattle, Luxi cattle and Chinese Holstein). The results showed that only P_8 locus showed polymorphisms and 3 synonymous SNPs of PCSK1 gene were identified. Additionally, significant statistical difference was found in bovine birth weight and diplotype MM were 7.35% higher than diplotype XY.
Chun-lei Zhang,Hui Wu,YanHong Wang,YuLong Zhao,XingTang Fang,CaiFa Chen,Hong Chen 한국유방암학회 2015 Journal of breast cancer Vol.18 No.3
Purpose: Circular RNAs (circRNAs), a novel class of RNAs, perform important functions in biological processes. However, the role of circRNAs in the mammary gland remains unknown. The present study is aimed at identifying and characterizing the circRNAs expressed in the mammary gland of lactating rats. Methods: Deep sequencing of RNase R-enriched rat lactating mammary gland samples was performed and circRNAs were predicted using a previously reported computational pipeline. Gene ontology terms of circRNA-producing genes were also analyzed. Results: A total of 6,824 and 4,523 circRNAs were identified from rat mammary glands at two different lactation stages. Numerous circRNAs were specifically expressed at different lactation stages, and only 1,314 circRNAs were detected at both lactation stages. The majority of the candidate circRNAs map to noncoding intronic and intergenic regions. The results demonstrate a circular preference or specificity of some genes. DAVID analysis revealed an enrichment of protein kinases and related proteins among the set of genes encoding circRNAs. Interestingly, four protein-coding genes (Rev3l, IGSF11, MAML2, and LPP) that also transcribe high levels of circRNAs have been reported to be involved in cancer. Conclusion: Our findings provide the basis for comparison between breast cancer profiles and for selecting representative circRNA candidates for future functional characterization in breast development and breast cancer.