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Drug Resistance

Calcium channel blockers are substrates of multidrug resistance-linked ABC drug transporter

Published in Drug Week, September 29th, 2006

The calcium channel blockers, 1,4-dihydropyridines, are substrates of the multidrug resistance-linked ABC drug transporter, ABCG2.

According to research from the United States, "The human ATP-binding cassette transporter, ABCG2, confers resistance to multiple chemotherapeutic agents and also affects the bioavailability of different drugs. [125I]Iodoarylazidoprazosin (IAAP) and [3H] azidopine were used for photoaffinity labeling of ABCG2 in this study."

"We show for the first time that both of these photoaffinity analogues are transport substrates for ABCG2 and that [3H] azidopine can also be used to photolabel both...

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