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Biol Reprod. 2013 Oct 17;89(4):93. doi: 10.1095/biolreprod.113.108597. Print 2013 Oct.

JMJD1C, a JmjC domain-containing protein, is required for long-term maintenance of male germ cells in mice.

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1
Experimental Research Center for Infectious Diseases, Institute for Virus Research, Kyoto University, Kyoto, Japan.

Abstract

JmjC domain-containing proteins are a class of enzymes responsible for histone demethylation. Previous studies revealed that the JmjC domain-containing protein KDM3A possesses intrinsic demethylase activity toward lysine 9 of histone H3 and plays essential roles in spermiogenesis. In contrast, the biological roles of JMJD1C, a KDM3A homolog in mice, are largely unknown. Here we present the crucial role of JMJD1C in male gametogenesis. Jmjd1c-deficient males became infertile due to the progressive reduction of germ cells after 3 mo of age. Importantly, Jmjd1c-deficient testes frequently contained abnormal tubules lacking developmentally immature germ cells. JMJD1C is most abundantly expressed in undifferentiated spermatogonia in mouse testis. The numbers of ZBTB16-positive spermatogonia and apoptotic germ cells in Jmjd1c-deficient testes decreased and increased in an age-dependent manner, respectively. Our studies demonstrated that JMJD1C contributes to the long-term maintenance of the male germ line.

KEYWORDS:

aging; epigenetics; histone modifications; male infertility

PMID:
24006281
DOI:
10.1095/biolreprod.113.108597
[Indexed for MEDLINE]
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