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Licensing of Primordial Germ Cells for Gametogenesis Depends on Genital Ridge Signaling
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نویسنده
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hu y.-c. ,nicholls p.k. ,soh y.q.s. ,daniele j.r. ,junker j.p. ,van oudenaarden a. ,page d.c.
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منبع
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plos genetics - 2015 - دوره : 11 - شماره : 3
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چکیده
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In mouse embryos at mid-gestation,primordial germ cells (pgcs) undergo licensing to become gametogenesis-competent cells (gccs),gaining the capacity for meiotic initiation and sexual differentiation. gccs then initiate either oogenesis or spermatogenesis in response to gonadal cues. germ cell licensing has been considered to be a cell-autonomous and gonad-independent event,based on observations that some pgcs,having migrated not to the gonad but to the adrenal gland,nonetheless enter meiosis in a time frame parallel to ovarian germ cells -- and do so regardless of the sex of the embryo. here we test the hypothesis that germ cell licensing is cell-autonomous by examining the fate of pgcs in gata4 conditional mutant (gata4 cko) mouse embryos. gata4,which is expressed only in somatic cells,is known to be required for genital ridge initiation. pgcs in gata4 cko mutants migrated to the area where the genital ridge,the precursor of the gonad,would ordinarily be formed. however,these germ cells did not undergo licensing and instead retained characteristics of pgcs. our results indicate that licensing is not purely cell-autonomous but is induced by the somatic genital ridge. © 2015 hu et al.
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آدرس
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whitehead institute,cambridge,ma,united states,division of developmental biology,cincinnati children’s hospital medical center,cincinnati,oh, United States, whitehead institute,cambridge,ma, United States, whitehead institute,cambridge,ma,united states,department of biology,massachusetts institute of technology,cambridge,ma, United States, whitehead institute,cambridge,ma,united states,department of biology,massachusetts institute of technology,cambridge,ma, United States, department of biology,massachusetts institute of technology,cambridge,ma,united states,department of physics,massachusetts institute of technology,cambridge,ma,united states,hubrecht institute—knaw (royal netherlands academy of arts and sciences) and university medical center utrecht,utrecht, Netherlands, department of biology,massachusetts institute of technology,cambridge,ma,united states,department of physics,massachusetts institute of technology,cambridge,ma,united states,hubrecht institute—knaw (royal netherlands academy of arts and sciences) and university medical center utrecht,utrecht, Netherlands, whitehead institute,cambridge,ma,united states,department of biology,massachusetts institute of technology,cambridge,ma,united states,howard hughes medical institute,whitehead institute,cambridge,ma, United States
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Authors
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