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Related Experiment Videos

Nitric oxide and the other cyclic nucleotide.

Claudette Klein1

  • 1E.A. Doisy Department of Biochemistry and Molecular Biology, St. Louis University Medical School, 1402 South Grand Boulevard, St. Louis, MO 63104, USA. kleinc@slu.edu

Cellular Signalling
|March 19, 2002
PubMed
Summary

Nitric oxide (NO) regulates cell activity and cytotoxicity. This review explores how NO affects cyclic adenosine monophosphate (cAMP) signaling by targeting adenylyl cyclase (AC), beyond its known effects on cyclic guanosine monophosphate (cGMP).

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Area of Science:

  • Cellular signaling pathways
  • Molecular mechanisms of nitric oxide action

Background:

  • Nitric oxide (NO) plays dual roles in cellular regulation, from daily activities to cytotoxic events.
  • While NO's cardiovascular effects are linked to soluble guanylyl cyclase (sGC) activation and cyclic guanosine monophosphate (cGMP) production, its broader mechanisms remain unclear.
  • The diverse functions of NO suggest pathways beyond cGMP modulation may be involved.

Purpose of the Study:

  • To review the evidence for nitric oxide (NO) modulating cyclic adenosine monophosphate (cAMP) signaling.
  • To investigate adenylyl cyclase (AC) as a potential target for NO regulation.
  • To explore mechanisms of NO action beyond the sGC-cGMP pathway.

Main Methods:

  • Literature review of studies investigating NO signaling pathways.

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  • Analysis of research on the interaction between NO and adenylyl cyclase (AC).
  • Examination of data on cAMP and cGMP levels in response to NO stimulation.

    • Main Results:

    • Evidence suggests NO significantly impacts cAMP signaling.
    • Adenylyl cyclase (AC) is identified as a key target for NO-mediated regulation.
    • NO's influence extends beyond the well-established sGC-cGMP pathway.

    Conclusions:

    • Nitric oxide (NO) exerts its diverse cellular functions through modulation of both cGMP and cAMP signaling.
    • Adenylyl cyclase (AC) represents a critical target for NO, influencing cellular responses.
    • Understanding NO's regulation of AC is essential for elucidating its multifaceted roles in physiology and pathology.