SIRIUS: a French nationwide project on distributed data bases

Abstract

Perilipin 1 (PLIN1) is a protein encoded by the <i>PLIN1</i> gene in eukaryotes. PLIN1 is a member of the PAT protein family, a family of proteins related to lipid droplet (LD) surface proteins. PLIN1 phosphorylation plays a vital role during fat metabolism of adipose tissue lipolysis and fat storage in adipocytes. However, to further explore the regulation of the <i>PLIN1</i> gene on the proliferation, differentiation and lipid metabolism of bovine adipocytes. In this study, the mRNA expression of <i>PLIN1,</i> at day six, was the highest during bovine adipocyte differentiation. Moreover, <i>PLIN1</i> can promote the proliferation and differentiation of preadipocytes in cattle. On the sixth day, after transfection with, and overexpression of, the <i>PLIN1</i> gene in bovine preadipocytes via adenovirus, cell samples were collected, and transcriptome sequencing was performed. A total of 1923 differentially expressed genes were detected. Through GO and KEGG pathway analysis, the differentially expressed genes were established to be mainly enriched in the AMPK, Wnt, and PPAR signaling pathways related to fat proliferation and differentiation. In conclusion, at the transcriptional level, <i>PLIN1</i> plays an important role in regulating fat proliferation and metabolism. Additionally, the sequencing results screened new differentially expressed genes related to fat metabolism, providing theoretical support for molecular breeding of Qinchuan beef cattle.