Integrative proteomic and phosphoproteomic profiling of testis from Wip1-knockout mice: insights into mechanisms of reduced fertility

ABSTRACT: Spermatogenesis plays an important role in the mammalian testis, involving in the complex processes of mitosis, meiosis, and spermiogenesis. Spermatogenesis may also be disrupted in the absence of the immunological and ‘fence’ functions of the BTB, resulting in male subfertility or infertility. Mice lacking wild-type p53-induced phosphatase 1 (Wip1) display male reproductive organ defects, but the molecular mechanisms underlying these abnormalities remain unclear. We explored the function of Wip1 in spermatogenesis and fertility by examining differences in the expressed testis proteome and phosphoproteome between Wip1-deficient and wild-type mice using a proteomics approach. Among a total of 6872 proteins and 4280 phosphorylation sites on 1614 proteins identified in our analysis, 58 proteins and 159 phosphorylation sites on 141 proteins were differentially regulated between these two groups of mice. These results suggested that proinflammatory cytokines may impair the blood–testis barrier dynamics by decreasing the expression of junction-associated proteins, which effect could be partially responsible for the subfertility and spermatogenesis defects in Wip1-knockout mice.

INSTRUMENT(S): Q Exactive

ORGANISM(S): Mus Musculus (mouse)

TISSUE(S): Testis

SUBMITTER: yinghui wei  

LAB HEAD: Kui Li

PROVIDER: PXD009220 | Pride | 2018-11-02

REPOSITORIES: Pride