[Effects of transcription factor SIX2 gene on the proliferation of bovine skeletal muscle satellite cells].

To investigate the effect of gene on the proliferation of bovine skeletal muscle satellite cells. Bovine skeletal muscle satellite cells were used as experimental materials, and the expression of gene in bovine skeletal muscle satellite cells was detected by real-time quantitative PCR at 24 h, 48 h, and 72 h of proliferation. The gene overexpression vector was constructed by homologous recombination. The gene overexpression plasmid and the control empty plasmid were transfected into bovine skeletal muscle satellite cells, and each group had three complex Wells. The cell viability was detected by MTT assay at 24 h, 48 h and 72 h after transfection. At 48 h after transfection, the cell cycle was detected by flow cytometry, and the expressions of cell proliferation marker genes were detected by real-time quantitative PCR (qRT-PCR) and Western blot. With the proliferation of bovine skeletal muscle satellite cells, the expression of mRNA was increased. Compared with the control group, the expressions of mRNA and protein in the gene overexpression plasmid group were increased by 18 and 2.6 times, respectively (＜0.01). The cell viability of the gene overexpression plasmid group was increased (＜0.01), the proportion of G1 cells was decreased by 24.6%, and the proportion of S phase and G2 phase cells was increased by 20.3% and 4.31%, respectively (＜0.01). The mRNA and protein expressions of gene were increased by 15.84 and 1.22 times, respectively, and the mRNA and protein expressions of proliferation marker genes and were increased by 4.82, 2.23,1.55 and 1.46 times, respectively (＜0.01). Overexpression of gene promotes the proliferation of bovine skeletal muscle satellite cells.