Acta Veterinaria et Zootechnica Sinica ›› 2024, Vol. 55 ›› Issue (10): 4391-4402.doi: 10.11843/j.issn.0366-6964.2024.10.013

• Animal Genetics and Breeding • Previous Articles     Next Articles

Study on the Function of PPP5C Gene in Regulating the Proliferation and Differentiation of Bovine Adipocytes

Lan FENG1(), Xue FENG1, Yulin MA1, Lingkai ZHANG1, Yanfen MA1, Dawei WEI1, Fen LI2, Lupei ZHANG3, Runjun YANG4, Yun MA1,*(), Bei CAI1,*()   

  1. 1. Key Laboratory of Ruminants Molecular Cell Breeding, College of Animal Science and Technology, Ningxia University, Yinchuan 750021, China
    2. School of Food Science and Engineering, Ningxia University, Yinchuan 750021, China
    3. Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
    4. College of Animal Science, Jilin University, Changchun 130000, China
  • Received:2024-03-25 Online:2024-10-23 Published:2024-11-04
  • Contact: Yun MA, Bei CAI E-mail:15202683541@163.com;mayun@nxu.edu.cn;caibei1115@163.com

Abstract:

The aim of this study was to investigate the role of PPP5C gene in the proliferation and differentiation of bovine adipocytes. Loss-of-function and gain-of-function experiments of PPP5C gene were performed in precursor adipocytes of Guyuan cattle. mRNA expression levels of marker genes and cell proliferation viability were detected using qRT-PCR, EdU, CCK-8 and flow cytometry. The results of TG assay, Oil Red O, BODIPY and Nile red staining provided phenotypic data support of lipid droplets accumulation during adipocytes differentiation. The results showed that, compared with the control group, interfering with the PPP5C gene significantly up-regulated the mRNA expression of proliferation marker genes (CDK1, CDK2, and PCNA) (P < 0.01), and cell viability was significantly increased (P < 0.01), which facilitated the transition of bovine precursor adipocytes from the S-phase to the G2-phase (P < 0.01). The results also suggested that PPP5C might also play a negative regulatory role in bovine precursor adipose differentiation. This was mainly manifested in the significant up-regulation of mRNA expression of lipogenic marker genes (PPARγ, C/EBPα, and FABP4) (P < 0.01) and the significant increase of TG content in adipocytes (P < 0.01) after interfering with the PPP5C gene. Meanwhile, the results of cellular phenotypic data of Oil Red O, BODIPY and Nilered staining suggested that interfering with PPP5C promoted bovine precursor adipocyte differentiation and increased lipid droplet accumulation. The results of functional acquisition experiments with the PPP5C gene were just the opposite. In summary, interfering with the PPP5C gene promotes bovine precursor adipocyte proliferation and differentiation, and overexpression of the PPP5C gene inhibits bovine precursor adipocyte proliferation and differentiation, suggesting that the PPP5C gene may play a role as a negative regulator in bovine precursor adipocyte proliferation and differentiation. This study provides basic data for further investigation of the molecular mechanism of PPP5C gene in regulating bovine fat deposition.

Key words: PPP5C, bovine, precursor adipocytes, differentiation, proliferation, flow cytometry

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