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PMID:14736746

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Citation

Kuramochi-Miyagawa, S, Kimura, T, Ijiri, TW, Isobe, T, Asada, N, Fujita, Y, Ikawa, M, Iwai, N, Okabe, M, Deng, W, Lin, H, Matsuda, Y and Nakano, T (2004) Mili, a mammalian member of piwi family gene, is essential for spermatogenesis. Development 131:839-49

Abstract

The piwi family genes, which are defined by conserved PAZ and Piwi domains, play important roles in stem cell self-renewal, RNA silencing, and translational regulation in various organisms. To reveal the function of the mammalian homolog of piwi, we produced and analyzed mice with targeted mutations in the Mili gene, which is one of three mouse homologs of piwi. Spermatogenesis in the MILI-null mice was blocked completely at the early prophase of the first meiosis, from the zygotene to early pachytene, and the mice were sterile. However, primordial germ cell development and female germ cell production were not disturbed. Furthermore, MILI bound to MVH, which is an essential factor during the early spermatocyte stage. The similarities in the phenotypes of the MILI- and MVH-deficient mice and in the physical binding properties of MILI and MVH indicate a functional association of these proteins in post-transcriptional regulation. These data indicate that MILI is essential for the differentiation of spermatocytes.

Links

PubMed Online version:10.1242/dev.00973

Keywords

Animals; Apoptosis/physiology; Argonaute Proteins; DEAD-box RNA Helicases; Gene Targeting; Male; Meiosis/physiology; Mice; Multigene Family; Mutation; Proteins/genetics; Proteins/metabolism; RNA Helicases/metabolism; Spermatogenesis/physiology; Testis/physiology

Significance

Annotations

Gene product Qualifier GO ID GO term name Evidence Code with/from Aspect Notes Status


See also

References

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