Acta Veterinaria et Zootechnica Sinica ›› 2024, Vol. 55 ›› Issue (8): 3678-3687.doi: 10.11843/j.issn.0366-6964.2024.08.039

• Basic Veterinary Medicine • Previous Articles     Next Articles

Effects of mdv1-miR-M4-5p Encoded by MDV on Proliferation and Apoptosis of MDCC-MSB1 Cells

Zuhua YU1,2(), Mengru GAO1,2, Lei HE1,2, Ying WEI1,2, Jian CHEN1,2, Songbiao CHEN1,2, Ke DING1,2,3,*()   

  1. 1. Laboratory of Functional Microbiology and Animal Health/The Key Laboratory of Animal Disease and Public Health, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
    2. Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang 471023, China
    3. College of Animal Science and Technology, Henan UniversityInstitute of Science and Technology, Xinxiang 453003, China
  • Received:2023-11-08 Online:2024-08-23 Published:2024-08-28
  • Contact: Ke DING E-mail:yzhd05@163.com;keding19@163.com

Abstract:

The purpose of this experiment was to study the effects of mdv1-miR-M4-5p analog encoded by Marek's disease virus (MDV) on proliferation and apoptosis of MDCC-MSB1 cells. In this study, mdv1-miR-M4-5p mimics, inhibitors and their negative controls were transfected into MSB1 cells for 48 h. Real-time quantitative fluorescent PCR (qRT-PCR) was used to detect the transcription of mdv1-miR-M4-5p, TGF-β1, Smad2, caspase-9, caspase-3, cyt-c, cyclinD1, Bcl-2 et al other molecules related to proliferation and apoptosis in MDCC-MSB1 cells. Cell proliferation was detected by CCK-8 and cell cycle and apoptosis were detected by flow cytometry. The results showed that compared with the control group, the transcription levels of mdv1-miR-M4-5p, cyclinD1 and Bcl-2 in MDCC-MSB1 cells transfected with mdv1-miR-M4-5p mimics was significantly up-regulated. The transcription of TGF-β1, Smad2, cyt-c, caspase-9 and caspase-3 was down-regulated, the proliferation of MDCC-MSB1 cells was promoted, the the number of G1 phase cells were decreased, the S and G2 cells were increased, and the apoptosis rate was decreased. Compared with the control group, the results of the proliferation and apoptosis of MDCC-MSB1 cells and the expression of related molecules transfected with mdv1-miR-M4-5p inhibitor were opposite to those transfected with mdv1-miR-M4-5p mimics. The results showed that Mdv1-miR-M4-5p could promote the proliferation and inhibit the apoptosis of MDCC-MSB1 cells. This may be conducted by inhibiting the TGF-β1/Smad2 signaling pathway.

Key words: mdv1-miR-M4-5p, MDV, proliferation, apoptosis, TGF-β1/Smad2

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