Marked differences between avian and mammalian testicular cells in the heat shock induction and polyadenylation of Hsp70 and ubiquitin transcripts

FEBS Letters

Mezquita, Cristóbal¹  Mezquita, Jovita¹  Mezquita, Belen¹ 

[1] Laboratori de Genètica Molecular, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Facultat de Medicina, Universitat de Barcelona, Casanova 143, 08036 Barcelona, Spain

关键词: Apoptosis;    RNA stability;    Spermatogenesis;    Stress resistance;    Translation;   

DOI  :  10.1016/S0014-5793(98)01172-7

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Mammalian male germ cells undergo apoptosis at the body's internal temperature of 37°C. Birds, however, are unique among homeothermic animals in developing spermatogenesis at the elevated avian internal body temperature of 40–41°C. To shed light on the mechanisms that maintain an efficient avian spermatogenesis at elevated temperatures we compared, in mouse and chicken testicular cells, the expression of genes that are essential for stress resistance: Hsp70 and ubiquitin. While the expression of Hsp70 and ubiquitin did not change upon heat shock in mouse testicular cells, both the amount and polyadenylation of Hsp70 and ubiquitin transcripts increased when male germ cells from adult chicken testis were exposed to elevated temperatures.

【 授权许可】

Unknown