Abstract
MicroRNAs (miRs) have crucial functions in spermatogenesis and implications for male infertility. In the present study, Homo sapiens (hsa)‑miR‑145 was designed and cloned into the eukaryotic expression plasmid pGenesil‑1. The recombinant plasmids were transfected into Hs1.tes normal testicular cells and NTERA‑2 testicular cancer cells. Quantitative polymerase chain reaction of hsa‑miR‑145 indicated that pGenesil‑1‑miR‑145 effectively upregulated the expression of hsa‑miR‑145 invitro. hsa‑miR‑145 overexpression inhibited the mRNA and protein expression of sex-determining regionY Box9 in Hs1.tes cells. The proliferation rates of NTERA‑2cells transfected with pGenesil‑1‑miR‑145 were significantly decreased. High expression levels of miR‑145 promoted cell apoptosis in NTERA‑2 cells. The results revealed that altered hsa‑miR‑145 expression in testicular cells affects the regulation of target genes associated with male infertility.
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