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Biochemistry, Biology, and Pharmacology of Cyclic Adenosine Diphosphoribose (cADPR)

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Abstract:

Cyclic adenosine diphosphoribose (cADPR) is an endogenous Ca2+ mobilizing nucleotide in many cell types and different species covering protozoa, plants and animals, including humans. cADPR is formed by ADP-ribosyl cyclases from nicotinamide adenine dinucleotide (NAD). Since at least some of the ADP-ribosyl cyclases are under the control of receptors for exogenous ligands, cADPR is regarded as a second messenger for Ca2+ signaling. The main intracellular target for cADPR is the ryanodine receptor, but it is unclear whether cADPR elicits Ca2+ release by direct binding or via a binding protein. Derivatives of NAD and cADPR are potent ADP-ribosyl cyclase inhibitors and cADPR antagonists. Since Ca2+ ions are regulators of many diverse cell functions, e.g. muscle contraction, secretion of neurotransmitters, hormones and enzymes, fertilization of oocytes, and lymphocyte activation and proliferation, the cADPR signaling pathway may become a valuable target for pharmaceutical intervention.

Keywords: adp-ribosyl cyclases; cyclic adenosine diphosphoribose; lymphocyte activation; ryanodine receptor

Document Type: Review Article

DOI: http://dx.doi.org/10.2174/0929867043455602

Affiliations: University Hospital Hamburg-Eppendorf, Center of Experimental Medicine, Institute of Biochemistry and Molecular Biology I: Cellular Signal Transduction, Martinistr. 52, 20246 Hamburg, Germany.

Publication date: April 1, 2004

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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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