Developmentally regulated expression of APG-1, a member of heat shock protein 110 family in murine male germ cells.
Apg-1 encodes a heat shock protein belonging to the heat shock protein 110 family, and is inducible by a 32 degrees C to 39 degrees C heat shock. Northern blot analysis of the testis from immature and adult mice, and of the purified germ cells revealed the quantitative change of the apg-1 transcripts during germ cell development. By in situ hybridization histochemistry the expressions of the apg-1 transcripts were detected in germ cells at specific stages of development including spermatocytes and spermatids. Although heat-induction of the apg-1 transcripts was observed in W/Wv mutant testis lacking germ cells, it was not detected in wild-type testis nor in the purified germ cells. Thus, the apg-1 expression is not heat-regulated but developmentally regulated in germ cells, suggesting that APG-1 plays a role in normal development of germ cells.
Kaneko
Y
Y
Department of Clinical Molecular Biology, Faculty of Medicine, Kyoto University, Shogoin Kawahara-cho, Sakyo-ku, Japan.
Kimura
T
T
Nishiyama
H
H
Noda
Y
Y
Fujita
J
J
D000818:Animals; D018507:Gene Expression Regulation, Developmental; D050957:HSP110 Heat-Shock Proteins; D018840:HSP70 Heat-Shock Proteins / Q000235:genetics*; D006360:Heat-Shock Proteins / Q000235:genetics*; D006358:Hot Temperature; D017403:In Situ Hybridization; D008297:Male; D051379:Mice; D008817:Mice, Mutant Strains; D012333:RNA, Messenger / Q000235:genetics; D013091:Spermatogenesis / Q000235:genetics; D013094:Spermatozoa / Q000378:metabolism*; D013737:Testis / Q000166:cytology / Q000378:metabolism
D050957:HSP110 Heat-Shock Proteins; D018840:HSP70 Heat-Shock Proteins; D006360:Heat-Shock Proteins; D012333:RNA, Messenger; C099678:Hspa4l protein, mouse