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Research ArticleCELLULAR AND MOLECULAR

Fibroblast Growth Factor Protects Nitric Oxide-Induced Apoptosis in Neuronal SHSY-5Y Cells

Asavari Wagle and Jai Pal Singh
Journal of Pharmacology and Experimental Therapeutics December 2000, 295 (3) 889-895;
Asavari Wagle
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Jai Pal Singh
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Abstract

Fibroblast growth factor (FGF) has been shown to protect tissue damage in animal models of cerebral and myocardial ischemia. The cellular and molecular mechanisms of FGF effects have not been fully defined. In the present study, we have investigated the effect of FGF homologs on nitric oxide (NO)-mediated neuronal cell death. Addition of NO donorS-nitroso-N-acetylpenicillamine (SNAP) to cultures of human neuroblastoma SHSY-5Y cells resulted in a concentration-dependent cell death. TdT-mediated dUTP-X nick end labeling and oligonucleosome assays confirmed that NO-mediated cell death occurred through the apoptotic pathway. In the presence of 150 μM SNAP, about 40% of the cells in culture underwent apoptosis. Treatment with FGF-2 resulted in greater than 80% reduction in NO-induced cell death. FGF addition to cell cultures also enhanced cell survival without affecting cell proliferation. FGF-2 effectively inhibited NO-mediated apoptosis even when added 6 h after treatment with SNAP. Examination of other homologs of FGF on NO-mediated cell death showed that in SHSY-5Y cells, FGF-2 and FGF-4, but not other FGF homologs, inhibited NO-mediated apoptosis. These results show that FGF-2 was a potent cell survival factor and protected SHSY-5Y cells from NO-mediated apoptosis. These effects were limited to FGF-2 and FGF-4 homologs.

Footnotes

  • Send reprint requests to: Dr. Jai Pal Singh, Lilly Research Laboratories, DC: 0520, Lilly Corporate Center, Indianapolis, IN 46285. E-mail: Singh_JaiPal{at}lilly.com

  • Abbreviations:
    NO
    nitric oxide
    MCAO
    middle cerebral artery occlusion
    NOS
    nitric-oxide synthase
    nNOS
    neuronal nitric-oxide synthase
    NMDA
    N-methyl-d-aspartate
    FGF
    fibroblast growth factor
    SNAP
    S-nitroso-N-acetylpenicillamine
    FBS
    fetal bovine serum
    XTT
    sodium 3′-[(1-phenyl-amino-carbonyl)-3,4-tetrazolium]-bis(4-methoxy-6-nitro)-benzene sulfonic acid hydrate
    TUNEL
    terminal deoxynucleotidyl transferase biotin-mediated dUTP nick end labeling
    • Received April 3, 2000.
    • Accepted August 17, 2000.
  • The American Society for Pharmacology and Experimental Therapeutics
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Journal of Pharmacology and Experimental Therapeutics: 295 (3)
Journal of Pharmacology and Experimental Therapeutics
Vol. 295, Issue 3
1 Dec 2000
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Research ArticleCELLULAR AND MOLECULAR

Fibroblast Growth Factor Protects Nitric Oxide-Induced Apoptosis in Neuronal SHSY-5Y Cells

Asavari Wagle and Jai Pal Singh
Journal of Pharmacology and Experimental Therapeutics December 1, 2000, 295 (3) 889-895;

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Research ArticleCELLULAR AND MOLECULAR

Fibroblast Growth Factor Protects Nitric Oxide-Induced Apoptosis in Neuronal SHSY-5Y Cells

Asavari Wagle and Jai Pal Singh
Journal of Pharmacology and Experimental Therapeutics December 1, 2000, 295 (3) 889-895;
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