H3K27 Demethylase, JMJD3, Regulates Fragmentation of Spermatogonial Cysts

Naoki Iwamori, Tokuko Iwamori, Martin M. Matzuk

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The spermatogonial stem cell (SSC) compartment is maintained by self-renewal of stem cells as well as fragmentation of differentiating spermatogonia through abscission of intercellular bridges in a random and stochastic manner. The molecular mechanisms that regulate this reversible developmental lineage remain to be elucidated. Here, we show that histone H3K27 demethylase, JMJD3 (KDM6B), regulates the fragmentation of spermatogonial cysts. Down-regulation of Jmjd3 in SSCs promotes an increase in undifferentiated spermatogonia but does not affect their differentiation. Germ cell-specific Jmjd3 null male mice have larger testes and sire offspring for a longer period compared to controls, likely secondary to increased and prolonged maintenance of the spermatogonial compartment. Moreover, JMJD3 deficiency induces frequent fragmentation of spermatogonial cysts by abscission of intercellular bridges. These results suggest that JMJD3 controls the spermatogonial compartment through the regulation of fragmentation of spermatogonial cysts and this mechanism may be involved in maintenance of diverse stem cell niches.

Original languageEnglish
Article numbere72689
JournalPloS one
Volume8
Issue number8
DOIs
Publication statusPublished - Aug 15 2013

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Stem cells
stem cells
Cysts
Spermatogonia
spermatogonia
abscission
Histone Demethylases
Maintenance
Stem Cell Niche
histones
Germ Cells
sires
Testis
germ cells
testes
niches
Stem Cells
Down-Regulation
Cells
mice

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

H3K27 Demethylase, JMJD3, Regulates Fragmentation of Spermatogonial Cysts. / Iwamori, Naoki; Iwamori, Tokuko; Matzuk, Martin M.

In: PloS one, Vol. 8, No. 8, e72689, 15.08.2013.

Research output: Contribution to journalArticle

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