Challenges in development of targeted liposomal therapeutics.

AAPS J

Department of Pharmaceutical Sciences and Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, Mugar Building, Room 312, 360 Huntington Avenue, Boston, Massachusetts 02115, USA.

Published: June 2012

AI Article Synopsis

  • Liposomes are phospholipid vesicles that serve as drug and gene carriers, especially for cancer treatment.
  • There are two targeting strategies for liposome delivery: passive targeting, which relies on their ability to accumulate in tumors through leaky blood vessels, and active targeting, which involves adding ligands to liposomes to bind specific cancer cell antigens.
  • The review discusses the progress and challenges in developing antibody-targeted liposomes loaded with anticancer drugs for clinical use.

Article Abstract

Liposomes, phospholipid vesicles with a bilayered membrane structure, have been widely used as pharmaceutical carriers for drugs and genes, in particular for treatment of cancer. To enhance the efficacy of the liposomal drugs, drug-loaded liposomes are targeted to the tumors by means of passive (enhanced permeability and retention mediated) targeting, based on the longevity of liposomes in blood and its accumulation in pathological sites with compromised vasculature, and active targeting, based on the attachment of specific ligands to the liposomal surface to bind certain antigens on the target cells. Antibody-targeted liposomes loaded with anticancer drugs demonstrate high potential for clinical applications. This review highlights evolution of liposomes for both passive and active targeting and challenges in development of targeted liposomal therapeutics specifically antibody-targeted liposomes.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3326155PMC
http://dx.doi.org/10.1208/s12248-012-9330-0DOI Listing

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