Acta Veterinaria et Zootechnica Sinica ›› 2024, Vol. 55 ›› Issue (6): 2441-2450.doi: 10.11843/j.issn.0366-6964.2024.06.016

• Animal Biotechnology and Reproduction • Previous Articles     Next Articles

The Effect of RSP on Cell Proliferation and Apoptosis of Porcine Leydig Cells with Hypoxia

Jinting LUO1(), Fafang XU2, Lei WANG1, Xuan LUO1, Yuhong MA1, Jianbo ZHANG1, Weihua HUANG1, Yuejun SHANG3, Guofang WU1,*()   

  1. 1. Key Laboratory of Plateau Livestock Genetic Breeding of Ministry of Agriculture and Rural Affairs, Key Laboratory of Plateau Livestock Genetic Resources Protection and Innovative Utilization of Qinghai Province, Qinghai Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining 810016, China
    2. Qinghai Mutual Aid Bamei Pig Breeding Field, Haidong 810599, China
    3. Qinghai Province Agriculture and Rural Science and Technology Guidance Development Service Center, Xining 810008, China
  • Received:2023-12-01 Online:2024-06-23 Published:2024-06-28
  • Contact: Guofang WU E-mail:1356372949@qq.com;qhdxwuguofang@126.com

Abstract:

This study investigates the effect and mechanism of rhodiola sachalinensis polysaccaride (RSP) on the proliferation and apoptosis of procine leydig cells under hypoxia conditions. The appropriate hypoxia injury time, optimal RSP concentration and the pre-treattime duration determined by CCK-8 assay. The experiment was divided into 3 groups, normal group, hypoxia group, and hypoxia+RSP group, and cell cycle proliferation and apoptosis were detected by flow cytometry method, the cell proliferation and apoptosis-related genes (CCND1, CDK4, IL-6, TNF-a, Bcl-2, Bax and Caspase-3) mRNA expression levels was detect by RT-qPCR, Western blot was used to detect the expression of Bax, Bcl-2, p21, JNK, p-JNK and p53. The viability of porcine leydig cells was decreased under hypoxia, which could be alleviated after 18 hours of pretreatment with 0.012 5 mg·mL-1 RSP. The Flow cytometry results showed that RSP could alleviate cell cycle arrest induced by hypoxia in porcine leydig cells. RSP significantly up-regulated the expression of Bcl-2, CCND1, CDK4(P < 0.05), and down-regulated the expression of TNF-α, IL-6, Bax, Caspase-3, and p21, p53, and pJNK/JNK (P < 0.05). RSP helps ensure the normal progression of leydig cells from S-phase to G2-phase under hypoxia conditions, promote cell proliferation and inhibit apoptosis. It is speculated that RSP regulates cell proliferation and apoptosis through p53/p21 and JNK pathways.

Key words: RSP, porcine leydig cells, hypoxia, proliferation, apoptosis

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