title: Challenges and key considerations of the enhanced permeability and retention effect for nanomedicine drug delivery in oncology.
abstract: Enhanced permeability of the tumor vasculature allows macromolecules to enter the tumor interstitial space, whereas the suppressed lymphatic filtration allows them to stay there. This phenomenon, enhanced permeability and retention (EPR), has been the basis of nanotechnology platforms to deliver drugs to tumors. However, progress in developing effective drugs using this approach has been hampered by heterogeneity of EPR effect in different tumors and limited experimental data from patients on effectiveness of this mechanism as related to enhanced drug accumulation. This report summarizes the workshop discussions on key issues of the EPR effect and major gaps that need to be addressed to effectively advance nanoparticle-based drug delivery.
authors: Alliance for Nanotechnology in Cancer, National Cancer Institute, Bethesda, MD 20892, USA. uma.prabhakar@nih.gov
authors: Uma
authors: U
authors: Prabhakar
authors: Hiroshi
authors: H
authors: Maeda
authors: Rakesh K
authors: RK
authors: Jain
authors: Eva M
authors: EM
authors: Sevick-Muraca
authors: William
authors: W
authors: Zamboni
authors: Omid C
authors: OC
authors: Farokhzad
authors: Simon T
authors: ST
authors: Barry
authors: Alberto
authors: A
authors: Gabizon
authors: Piotr
authors: P
authors: Grodzinski
authors: David C
authors: DC
authors: Blakey
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000008:administration & dosage* / Q000493:pharmacokinetics*; D016503:Drug Delivery Systems; D006801:Humans; D050997:Nanomedicine; D009369:Neoplasms / Q000098:blood supply / Q000188:drug therapy*; D010539:Permeability
chemical_list: D000970:Antineoplastic Agents