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To assess testicular mRNA and protein expression levels of MRE11 and RAD50 in human azoospermia patients. Patients diagnosed with maturation arrest at the spermatocyte stage (MA) and Sertoli cell-only syndrome (SCOS) were recruited through diagnostic testicular biopsy. Patients with normal spermatogenesis were studied as controls. In addition, knockdown of MRE11 and RAD50 was performed in GC-2spd(ts) cells to investigate their roles in cellular proliferation and apoptosis. mRNA and protein expression levels of MRE11 and RAD50 were measured using quantitative polymerase chain reaction, western blotting, and immunohistochemistry, respectively. Knockdown of both MRE11 and RAD50 utilized transfection with small interfering RNAs. Our findings demonstrated altered expression levels of MRE11 and RAD50 in human testes with MA and SCOS, and showed that these alterations might be associated with impaired spermatogenesis. These results offer valuable new perspectives into the molecular mechanisms of male infertility.


Minhao Hu, Lejun Li, Shuyuan Liu, Yiyun Lou, Liya Wang, Fang Le, Hongping Li, Qijing Wang, Hangying Lou, Ning Wang, Fan Jin. Decreased expression of MRE11 and RAD50 in testes from humans with spermatogenic failure. Journal of assisted reproduction and genetics. 2020 Feb;37(2):331-340

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PMID: 31983050

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