[Expression of sHsps of normal palate and cleft palate during mouse embryogenesis].
OBJECTIVE
To study the expression of sHsps in normal palate and cleft palate during mouse embryogenesis.


METHODS
At GD10, gestational mice of the treatment and the control were administered with 80 mg/kg retinoic acid and the same volume vegetable oil separately, and the normal palate and cleft palate of embryos were harvested in GD15-GD17. The relative abundance of sHsps of all samples was measured by reverse transcript polymerase chain reaction (RT-PCR).


RESULTS
In the normal limbs, except that there is no expression of Hspb10 at GD17, all the other Hsps expressed obviously in GD15-GD17. To the normal palates, the expressional abundance of Hsp20, Hsp25, Hsp27, Hsp32, Hspb2, Hspb3, Hspb7 was stable, that of Hsp30, Hspb5 was increased following the embryos aging, and the expressional peak of Hsp10, Hsp22, Hspb4 occurred at GD16. In GD15-GD17, the expressional abundance of Hsp30, Hsp32, Hspb4, Hspb10 of the cleft palates was higher than that of the normal palates, but the expressional abundance of Hsp60, Hspb5, Hspb9 of the cleft palates was lower than that of the normal palates. The expressional models of Hspb9, Hspb 10 of the normal palates were different from those of the cleft palates obviously.


CONCLUSIONS
Except that there is no expression of HspblO at GD17, all the other Hsps expressed obviously in GD15-GD17 during normal clefts' development. To different Hsps, there is different expressional characteristic. Hsp30, Hsp32, Hspb4, Hspb10 maybe play a protective role in the stress action of cleft palate, and Hsp10, Hsp60, Hspb5, Hspb9, Hspb10 were maybe relative to cleft palate.
Zhu
Yong-Fei
YF
Department of Health Toxicology, Second Military Medical University, Shanghai.
Zhu
Jiang-Bo
JB
Zhou
Hong-Yuan
HY
Zhang
Tian-Bao
TB
D000818:Animals; D002972:Cleft Palate / Q000139:chemically induced / Q000196:embryology* / Q000235:genetics* / Q000378:metabolism; D004622:Embryo, Mammalian / Q000196:embryology / Q000378:metabolism; D005260:Female; D018507:Gene Expression Regulation, Developmental; D006360:Heat-Shock Proteins / Q000235:genetics / Q000378:metabolism*; D008297:Male; D051379:Mice; D008813:Mice, Inbred ICR; D014212:Tretinoin
D006360:Heat-Shock Proteins; D014212:Tretinoin