Nitric oxide donor induces HSP70 accumulation in the heart and in cultured cells.
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.
Malyshev IYu
Institute of General Pathology and Pathophysiology, Moscow, Russian Federation.
Malugin
A V
AV
Golubeva LYu
Zenina
T A
TA
Manukhina
E B
EB
Mikoyan
V D
VD
Vanin
A F
AF
D000818:Animals; D001794:Blood Pressure / Q000187:drug effects; D002460:Cell Line; D004578:Electron Spin Resonance Spectroscopy; D018840:HSP70 Heat-Shock Proteins / Q000096:biosynthesis*; D006321:Heart / Q000187:drug effects / Q000502:physiology; D018197:Hepatoblastoma; D006358:Hot Temperature; D006801:Humans; D007501:Iron / Q000737:chemistry / Q000494:pharmacology*; D007700:Kinetics; D008113:Liver Neoplasms; D008297:Male; D009206:Myocardium / Q000378:metabolism*; D009569:Nitric Oxide / Q000494:pharmacology / Q000502:physiology*; D009589:Nitrogen Oxides / Q000737:chemistry / Q000494:pharmacology*; D051381:Rats; D017208:Rats, Wistar; D014407:Tumor Cells, Cultured
D018840:HSP70 Heat-Shock Proteins; D009589:Nitrogen Oxides; D009569:Nitric Oxide; C073661:dinitrosyl iron complex; D007501:Iron