Abstract:
:VASA is an evolutionarily conserved RNA helicase essential for germ cell development. The mouse PIWI family proteins MILI and MIWI2 are involved in production of Piwi-interacting RNAs (piRNAs) in fetal male germ cells through a ping-pong amplification cycle. Expression of retrotransposons is elevated in MILI- and MIWI2-deficient male germ cells due to defective de novo DNA methylation, which is presumably caused by impaired piRNA expression. Here, we report that essentially the same abnormalities are observed in MVH (mouse VASA homolog)-deficient mice. Comprehensive analysis of piRNAs in MVH-deficient fetal male germ cells showed that MVH plays crucial roles in the early phase of the ping-pong amplification cycle.
journal_name
Genes Devjournal_title
Genes & developmentauthors
Kuramochi-Miyagawa S,Watanabe T,Gotoh K,Takamatsu K,Chuma S,Kojima-Kita K,Shiromoto Y,Asada N,Toyoda A,Fujiyama A,Totoki Y,Shibata T,Kimura T,Nakatsuji N,Noce T,Sasaki H,Nakano Tdoi
10.1101/gad.1902110subject
Has Abstractpub_date
2010-05-01 00:00:00pages
887-92issue
9eissn
0890-9369issn
1549-5477pii
24/9/887journal_volume
24pub_type
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