Heat shock is lethal to fibroblasts microinjected with antibodies against hsp70.
Science
; 242(4877): 433-6, 1988 Oct 21.
Article
em En
| MEDLINE
| ID: mdl-3175665
ABSTRACT
Synthesis of a small group of highly conserved proteins in response to elevated temperature and other agents that induce stress is a universal feature of prokaryotic and eukaryotic cells. Although correlative evidence suggests that these proteins play a role in enhancing survival during and after stress, there is no direct evidence to support this in mammalian cells. To assess the role of the most highly conserved heat shock protein (hsp) family during heat shock, affinity-purified monoclonal antibodies to hsp70 were introduced into fibroblasts by needle microinjection. In addition to impairing the heat-induced translocation of hsp70 proteins into the nucleus after mild heat shock treatment, injected cells were unable to survive a brief incubation at 45 degrees C. Cells injected with control antibodies survived a similar heat shock. These results indicate that functional hsp70 is required for survival of these cells during and after thermal stress.
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Base de dados:
MEDLINE
Assunto principal:
Temperatura Alta
/
Proteínas de Choque Térmico
Limite:
Animals
Idioma:
En
Ano de publicação:
1988
Tipo de documento:
Article