Chemistry and Biology of Fascaplysin, a Potent Marine-Derived CDK-4 Inhibitor
S. B. Bharate,
R. A. Vishwakarma.
Marine natural products offer an abundant source of pharmacologically active agents with great diversity and
complexity, and the potential to produce valuable therapeutic entities. Indole alkaloids is one of the important class of
marine-derived secondary metabolites, with wide occurrence amongst variety of marine sources such as sponges,
tunicates, algae, worms and microorganisms and have been extensively studied for their biological activities. Among this
chemical family, a sponge-derived bis-indole alkaloid fascaplysin (1) exhibited broad range of bioactivities including
antibacterial, antifungal, antiviral, anti-HIV-1-RTase, p56 tyrosine kinase inhibition, antimalarial, anti-angiogenic,
antiproliferative activity against numerous cancer cell lines, specific inhibition of cyclin-dependent kinase-4 (IC50 350
nM) and action as a DNA intercalator. In the present review, the chemical diversity of natural as well as synthetic
analogues of fascaplysin has been reviewed with a detailed account on synthetic reports and pharmacological studies. Our
analysis of the structure-activity relationships of this family of compounds highlights the existence of various potential
leads for the development of novel anticancer agents.
Keywords: Fascaplysin, anticancer, cyclin-dependent kinase, CDK-4, marine natural products, anti-angiogenic, acorn worms, unicates, symbiotic bacteria, stereochemistry
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