Expression of HSP70-2 gene during germ cell apoptosis in rat unilateral cryptorchid testes.
To investigate the role of Hsp70-2 gene in germ cell apoptosis induced by heat stress, its expression changes were examined in rat normal and unilateral cryptorchid testes by using in situ hybridization, immunohistochemistry, and northern blot analysis techniques. The results showed that the expression level of Hsp70-2 gene declined slightly at the early stage of germ cell apoptosis, and dropped dramatically when most of the germ cells were undergoing apoptosis on day 7.5 after the induction of cryptorchidism. This report suggests for the first time that Hsp70-2 gene might not inhibit the apoptosis of germ cells at the early stage in cryptorchid testes. Hsp70-2 gene does not belong to the immediate early related genes that are responsible for germ cell apoptosis induced by heat stress.
Guo
C X
CX
State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing.
Ma
J
J
Zhou
X C
XC
Liu
Y X
YX
D000818:Animals; D017209:Apoptosis; D015152:Blotting, Northern; D003456:Cryptorchidism / Q000378:metabolism* / Q000473:pathology / Q000601:surgery; D004195:Disease Models, Animal; D019084:Fluorescent Antibody Technique, Indirect; D015870:Gene Expression; D005854:Germ Cells / Q000378:metabolism* / Q000473:pathology; D018840:HSP70 Heat-Shock Proteins / Q000096:biosynthesis / Q000235:genetics*; D017403:In Situ Hybridization; D008297:Male; D012333:RNA, Messenger / Q000096:biosynthesis; D051381:Rats; D017207:Rats, Sprague-Dawley; D013737:Testis / Q000378:metabolism* / Q000473:pathology / Q000601:surgery
D018840:HSP70 Heat-Shock Proteins; C490435:Hspa2 protein, rat; D012333:RNA, Messenger