A novel gene, Pog, is necessary for primordial germ cell proliferation in the mouse and underlies the germ cell deficient mutation, gcd.
Primordial germ cells (PGCs) are the precursor of the germ cells in adult gonads. They arise extra-gonadally and migrate through somatic tissues to the presumptive genital ridges, where they proliferate and differentiate into oogonia or spermatogonia cells. Abnormalities in this developmental process can cause embryonic depletion of germ cells leading to infertility in the adult. We report here that the mouse gcd (germ cell deficient) mutant phenotype, characterized by reduced numbers of PGCs and adult sterility, is due to reduced PGC proliferation rather than aberrant migration and is caused by the partial deletion of a single novel gene, Pog (proliferation of germ cells). Pog is critical for normal PGC proliferation, starting between 9.5 and 10.25 dpc when germ cells begin to migrate to the developing genital ridge. Deletion of Pog is also accompanied by reduced embryonic body weight and, on some genetic backgrounds, embryonic lethality. Thus, in addition to being necessary for PGC proliferation, Pog may have a wider significance in early embryonic development.
Agoulnik
Alexander I
AI
Department of Obstetrics and Gynecology, Baylor College of Medicine, 6550 Fannin Street (#880), Houston, TX 77030, USA.
Lu
Baisong
B
Zhu
Qichao
Q
Truong
Cavatina
C
Ty
Maria T
MT
Arango
Nelson
N
Chada
Kiran K
KK
Bishop
Colin E
CE
D000818:Animals; D002454:Cell Differentiation / Q000235:genetics; D002455:Cell Division / Q000235:genetics; D002465:Cell Movement / Q000235:genetics; D020964:Embryo Loss / Q000235:genetics; D005314:Embryonic and Fetal Development / Q000235:genetics; D020567:Fetal Weight / Q000235:genetics; D018507:Gene Expression Regulation, Developmental; D005854:Germ Cells / Q000166:cytology / Q000502:physiology*; D051379:Mice; D009154:Mutation; D011506:Proteins / Q000235:genetics* / Q000378:metabolism; D017422:Sequence Analysis, DNA
C474039:Pog protein, mouse; D011506:Proteins