Intracellular trafficking of MDR transporters and relevance of SNPs

Letizia Porcelli, Clara Lemos, Godefridus J. Peters, Angelo Paradiso, Amalia Azzariti

Research output: Contribution to journalArticlepeer-review


Multi-drug resistance (MDR) frequently contributes to the failure of chemotherapeutic treatments in cancer patients. Mechanisms underlying the development of MDR have been extensively studied and are considered multifactorial. Among them, the ATP-Binding Cassette (ABC) family of proteins plays a pivotal role. Processes of cellular distribution and subcellular localization of MDR-ABC proteins are not yet well explored and to enlighten these topics could be crucial to understand cellular drug uptake and retention. In this review, we analysed literature data concerning i) intracellular trafficking of MDR-ABC proteins (BCRP, P-gp and MRP1) and ii) mechanisms altering their cellular localization and trafficking. Moreover, we describe single nucleotide polymorphisms (SNP) that have been reported for some multidrug resistance (MDR) transporters, such as BCRP and P-gp, emphasizing their ability to affect the expression, function and localization of the transporters, with implications on drug resistance phenotypes.

Original languageEnglish
Pages (from-to)197-208
Number of pages12
JournalCurrent Topics in Medicinal Chemistry
Issue number2
Publication statusPublished - 2009


  • BCRP
  • MDR
  • MRP
  • P-gP
  • SNP

ASJC Scopus subject areas

  • Drug Discovery


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