alexa Atrial natriuretic peptide and long acting natriuretic peptide inhibit MEK 1 2 activation in human prostate cancer cells.
Oncology

Oncology

Journal of Cancer Science & Therapy

Author(s): Sun Y, Eichelbaum EJ, Wang H, Vesely DL, Sun Y, Eichelbaum EJ, Wang H, Vesely DL

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Abstract BACKGROUND: Atrial natriuretic peptide and long acting natriuretic peptide have anticancer effects in human prostate adenocarcinomas. MATERIALS AND METHODS: Atrial natriuretic peptide, long acting natriuretic peptide and cyclic GMP's effects on MEK 1/2 kinase were examined in human prostate adenocarcinoma cells. RESULTS: Atrial natriuretic peptide and long acting natriuretic peptide decreased the activation of MEK 1/2 over a concentration range of 0.01 microM to 10 microM. Long acting natriuretic peptide and atrial natriuretic peptide (each 10 microM) inhibited the phosphorylation of MEK 1/2 kinase 97\% (p < 0.00001) and 88\% (p < 0.00001), respectively. The inhibition of MEK 1/2 was maximal at two hours, and ceased by four hours, secondary to both peptides. The ability of peptides to inhibit MEK 1/2 was inhibited by cyclic GMP antibody and cyclic GMP itself inhibited MEK 1/2 phosphorylation by 93\%. CONCLUSION: Atrial natriuretic peptide and long acting natriuretic peptide both inhibit MEK 1/2 kinase mediated via cyclic GMP as part of their anticancer mechanism(s) of action.
This article was published in Anticancer Res and referenced in Journal of Cancer Science & Therapy

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