Abstract:
:The mammalian Y chromosome plays a critical role in spermatogenesis. However, the exact functions of each gene in the Y chromosome have not been completely elucidated, partly owing to difficulties in gene targeting analysis of the Y chromosome. Zfy was first proposed to be a sex determination factor, but its function in spermatogenesis has been recently elucidated. Nevertheless, Zfy gene targeting analysis has not been performed thus far. Here, we adopted the highly efficient CRISPR/Cas9 system to generate individual Zfy1 or Zfy2 knockout (KO) mice and Zfy1 and Zfy2 double knockout (Zfy1/2-DKO) mice. While individual Zfy1 or Zfy2-KO mice did not show any significant phenotypic alterations in fertility, Zfy1/2-DKO mice were infertile and displayed abnormal sperm morphology, fertilization failure, and early embryonic development failure. Mass spectrometric screening, followed by confirmation with western blot analysis, showed that PLCZ1, PLCD4, PRSS21, and HTT protein expression were significantly deceased in spermatozoa of Zfy1/2-DKO mice compared with those of wild-type mice. These results are consistent with the phenotypic changes seen in the double-mutant mice. Collectively, our strategy and findings revealed that Zfy1 and Zfy2 have redundant functions in spermatogenesis, facilitating a better understanding of fertilization failure and early embryonic development failure.
journal_name
PLoS Genetjournal_title
PLoS geneticsauthors
Nakasuji T,Ogonuki N,Chiba T,Kato T,Shiozawa K,Yamatoya K,Tanaka H,Kondo T,Miyado K,Miyasaka N,Kubota T,Ogura A,Asahara Hdoi
10.1371/journal.pgen.1006578subject
Has Abstractpub_date
2017-01-23 00:00:00pages
e1006578issue
1eissn
1553-7390issn
1553-7404pii
PGENETICS-D-16-01881journal_volume
13pub_type
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