Analysis of styryl-based inhibitors of the lymphocyte tyrosine protein kinase p56lck. |
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Authors: | Z H Li T R Burke J B Bolen |
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Institution: | Department of Molecular Biology, Bristol-Myers Squibb Pharmaceutical Research Institute, Princeton, New Jersey 08543. |
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Abstract: | Several styryl-based compounds were evaluated for their capacity to act as inhibitors of the non-receptor tyrosine protein kinase p56lck. Our results demonstrate that alpha-cyanocinnamamide compounds can inhibit both the in vitro tyrosine autophosphorylation of p56lck as well as p56lck phosphorylation of exogenous substrates. Compound 67B-83-A was found to inhibit p56lck protein kinase activity with a calculated IC50 of 7 to 10 microM. This compound did not significantly inhibit the tyrosine protein kinase activity of the epidermal growth factor receptor and was found to be a less effective tyrosine protein kinase inhibitor for other members of the src family of protein kinases. |
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