ABC-transporters expressed on endothelial cell membranes efflux anti-HIV drugs

Researchers at Tulane University Medical Center in New Orleans (USA) have discovered that drug-efflux pumps, belonging to the ATP-binding cassette (ABC) transporter family, are constitutively expressed on vascular endothelial cells. Transcripts for several different ABC-transporters, e.g. MDR-1 (P-gp) and MRPs, were detected in endothelial cells, obtained from brain, aortic artery, pulmonary artery, dermal microvessels and umbilical veins.

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