[The role of the ubiquitin proteasome system and PP2A in spermatogenesis].

The ubiquitin proteasome system (UPS) plays an important role in cell degradation, and is involved in many biological processes such as cell cycle regulation, immune response, DNA damage repair, and signal transduction. It also acts a crucial part in spermatogenesis by selectively degrading proteins and regulating such processes as DNA repair and protamine histone replacement. PP2A, as an essential serine/threonine phosphatase, participates in a variety of life activities. Studies have shown the involvement of UPS in the ubiquitination regulation of PP2A and that of PP2A in several stages of meiosis. This review updates the roles of UPS and PP2A in spermatogenesis.