Stolonidiol: Synthesis, Target Identification, and Mechanism for Choline Acetyltransferase Activation.

J Am Chem Soc

Department of Chemistry and ‡Department of Molecular Therapeutics, The Scripps Research Institute, 130 Scripps Way, Jupiter, Florida 33458, United States.

Published: April 2017

AI Article Synopsis

  • Stolonidiol enhances choline acetyltransferase (ChAT) activity, which is critical for acetylcholine production.
  • Researchers achieved the total synthesis of stolonidiol starting from (R)-(+)-limonene.
  • The study reveals that stolonidiol activates protein kinase C (PKC) by binding to its phorbol ester binding site, which in turn increases ChAT activity through PKC activation.

Article Abstract

Stolonidiol, a marine natural product, has been reported to potentiate the activity of choline acetyltransferase (ChAT), the enzyme that produces the neurotransmitter acetylcholine. Here we report the total synthesis of stolonidiol starting from (R)-(+)-limonene. To identify the mechanism by which ChAT activity is increased, we sought to identify the biological target of stolonidiol. We show that stolonidiol binds to the phorbol ester binding site of protein kinase C (PKC), induces translocation of PKC to the cell membrane, and activates kinase activity. Furthermore, we confirmed the increase in ChAT activity observed upon treatment of cells with stolonidiol and show that this effect is mediated by PKC. Collectively, our data strongly suggest that PKC activation by stolonidiol is responsible for the resulting potentiation of ChAT activity.

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http://dx.doi.org/10.1021/jacs.7b01083DOI Listing

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