Acta Veterinaria et Zootechnica Sinica ›› 2024, Vol. 55 ›› Issue (5): 2226-2240.doi: 10.11843/j.issn.0366-6964.2024.05.040

• BASIC VETERINARY MEDICINE • Previous Articles     Next Articles

Effects of SOCS2 on Proliferation, Cycle and Apoptosis of Turbinate Bone Cells in Goats

LI Qiuyun1, TIAN Xinyuan1, LIAO Wensheng1, ZHANG Huanrong1, REN Yupeng1, YANG Falong1, ZHU Jiangjiang2*, XIANG Hua1*   

  1. 1. Key Laboratory of Animal Medicine at Southwest Minzu University of Sichuan Province, Chengdu 610041, China;
    2. Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization Key Laboratory of Sichuan Province, Chengdu 610041, China
  • Received:2023-08-28 Online:2024-05-23 Published:2024-05-27

Abstract: Suppressor of cytokine signaling 2 (SOCS2) is involved in regulating various physiological and pathological processes in animals, such as cell apoptosis, proliferation, cell cycle, tumor, and inflammatory response. In this study, based on the first cloned SOCS2 gene from goats, the effects of overexpression and interference SOCS2 expression on proliferation, cycle and apoptosis of goat turbinate bone cells were studied. A total of 9 samples of heart, liver, spleen, lung, kidney, rumen, large intestine, small intestine and goat turbinate bone cells of healthy Jianzhou goats (6 animals) were used as samples, and the sequence of the CDS region of the goat SOCS2 gene was cloned by reverse transcription PCR and analyzed the sequence. RT-qPCR was used to detect the expression of SOCS2 gene in different tissues. The cloned SOCS2 gene CDS region ligation vector was constructed as a eukaryotic expression vector pcDNA3.1-SOCS2. Design, synthesis and screen effective siRNAs based on goat SOCS2 gene sequences. After transfecting pcDNA3.1-SOCS2 and siRNAs to turbinate osteocytes with LipofectamineTM 3000 reagent, SOCS2 protein expression was detected with Western blot mothed, the MTT method detects the effect of SOCS2 on cell proliferation, flow cytometry to detect the effect of SOCS2 on cell cycle and apoptosis and RT-qPCR was used to detect the transcription levels of cell cycle-related genes p21, CDK2 and apoptosis-related genes Caspase3, Caspase7, PARP1, p53, Bax, BCL2L11 and Bcl-2. The results showed that the total length of goat SOCS2 gene was 1 065 bp, and the CDS zone length was 597 bp, encoding 198 amino acid residues. SOCS2 gene is expressed at the highest levels in the liver tissue; SOCS2 can inhibit cell proliferation. The eukaryotic expression vector pcDNA3.1-SOCS2 was successfully constructed, and the gene was successfully expressed in turbinate bone cells. SOCS2 overexpression can lead to a significant increase in the number of cells in the G2/M+S phase and down-regulation of mRNA expression in CDK2 and p21 genes. It promoted apoptosis and upregulated the mRNA expression of Caspase3, Caspase7, Bax, p53, BCL2L11, and Bcl-2 genes, but there was no significant change in PARP1 expression level. However, after interference the expression of SOCS2, the number of cells in G0/G1 stage increased significantly, and the mRNA expression of CDK2 and p21 genes was upregulated. The apoptosis was inhibited and the mRNA expression of Caspase3, Bax, p53 and PARP1 genes was downregulated, while the expression levels of Caspase7, BCL2L11 and Bcl-2 did not change significantly. In summary, SOCS2 can block cells in the G2/M+S phase, promote apoptosis, and inhibit cell proliferation. The results of this study accumulate experimental data for a comprehensive reveal of the function of goat SOCS2.

Key words: goat, SOCS2, cell proliferation, cell cycle, apoptosis

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