Dipyridamole potentiates the growth-inhibitory action of methotrexate and 5-fluorouracil in human keratinocytes in vitro.


Human keratinocytes transport extracellular thymidine across the plasma membrane and incorporate it into DNA. Data presented here show that dipyridamole, a well-known inhibitor of facilitated diffusion of nucleosides, blocks the transport of thymidine into human keratinocytes in vitro. Dipyridamole (1.0 microM) inhibited the transport of 3H-thymidine (0.2… (More)


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