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Cardiovasc Drug Rev. 2006 Fall-Winter;24(3-4):261-74.

The many faces of H89: a review.

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1
Dept. Biomedical Sciences, Faculty of Health Sciences, University of Stellenbosch, Tygerberg, South Africa.

Abstract

H89 is marketed as a selective and potent inhibitor of protein kinase A (PKA). Since its discovery, it has been used extensively for evaluation of the role of PKA in the heart, osteoblasts, hepatocytes, smooth muscle cells, neuronal tissue, epithelial cells, etc. Despite the frequent use of H89, its mode of specific inhibition of PKA is still not completely understood. It has also been shown that H89 inhibits at least 8 other kinases, while having a relatively large number of PKA-independent effects which may seriously compromise interpretation of data. Thus, while recognizing its kinase inhibiting properties, it is advised that H89 should not be used as the single source of evidence of PKA involvement. H-89 should be used in conjunction with other PKA inhibitors, such as Rp-cAMPS or PKA analogs.

[Indexed for MEDLINE]

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