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Okadaic Acid, Useful Tool for Studying Cellular Processes

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Abstract:

One of the most interesting groups of substances of marine origin, from structural and pharmacological points of view are polyether toxins, which generally pre-sent a great diversity in size and potent biological activities. The subject of this review is limited to okadaic acid (OA). It was the first example of a group of polyether toxins produced by marine microalgae, which is responsible for the natural phenomena known as Diarrhetic Shellfish Poisoning, DSP red tides. These toxins are accumulated in the digestive glands of the shellfish with a disastrous effect upon the shellfish industry in many parts of the world. Thus, it has been demonstrated that OA is a highly selective inhibitor of protein phosphatases type 1 (PP1) and 2A (PP2A), subsequently that it causes dramatic increases in phosphorylation of numerous proteins as well as being a potent tumour promoter. For that reason, OA is an extremely useful tool for studying the cellular processes that are regulated by reversible phosphorylation of proteins as signal transduction, cell division and memory.

Keywords: Diarrhetic Shellfish; Dinophysis; Halichondria okadai; OKADAIC ACID CLASS INHIBITORS; Okadaic Acid; Pandoras acanthifolium; Prorocentrum; protein kinases (PKs); threonine-specific (PSPs); tyrosine-specific (PTPs) enzymes

Document Type: Review Article

DOI: https://doi.org/10.2174/0929867023371247

Publication date: 2002-01-01

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  • Current Medicinal Chemistry covers all the latest and outstanding developments in medicinal chemistry and rational drug design. Each issue contains a series of timely in-depth reviews written by leaders in the field covering a range of the current topics in medicinal chemistry. Current Medicinal Chemistry is an essential journal for every medicinal chemist who wishes to be kept informed and up-to-date with the latest and most important developments.
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