Nitric oxide donor induces HSP70 accumulation in the heart and in cultured cells

[摘要]

As our group has shown, the NO-synthase inhibitor L-NNA decreased 2–3 times heat shock-induced synthesis of the heat shock protein HSP70 (FEBS Lett. 370 (1995) 159–162). It was suggested that NO is involved in such induction. In the present study, it was found that (1) injection of the NO donor dinitrosyl iron complex (DNIC) into rats results in accumulation of HSP70 in the heart; (2) heat shock is accompanied by increased generation of NO (EPR assay) and HSP70 accumulation in cultured cells; (3) DNIC induces HSP70 accumulation in cultured cells not exposed to heat shock.

[学科分类] 生物化学/生物物理

[关键词] Nitric oxide;Heat shock protein;Cell culture;Electron paramagnetic resonance;Western blot analysis;DNIC;dinitrosyl iron complex;EPR;electron paramagnetic resonance;HS;heat shock;HSP70;heat shock protein with molecular weight 70 kDa;L-NNA;NO;nitric oxide