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Published on: February 9, 2019
Development of ligand-targeted liposomes for cancer therapy
Charles O Noble1, Dmitri B Kirpotin, Mark E Hayes
1University of California at San Francisco, CA 94143, USA.
Abstract:
The continued evolution of targeted liposomal therapeutics has resulted in new agents with remarkable antitumour efficacy and relatively mild toxicity profiles. A careful selection of the ligand is necessary to reduce immunogenicity, retain extended circulation lifetimes, target tumour-specific cell surface epitopes, and induce internalisation and subsequent release of the therapeutic substance from the liposome. Methods for assembling targeted liposomes, including a novel micellar insertion technology, for incorporation of targeting molecules that efficiently transforms a non-targeted liposomal therapeutic to a targeted one, greatly assist the translation of targeted liposome technology into the clinic. Targeting strategies with liposomes directed at solid tumours and vascular targets are discussed. The authors believe the development of ligand-targeted liposomes is now in the advanced stage and offers unique and important advantages among other targeted therapies. Anti-HER2 immunoliposomal doxorubicin is awaiting Phase I clinical trials, the results of which should provide new insights into the promise of ligand-targeted liposomal therapies.
Insights
Ligand-targeted liposomes show promise for cancer treatment with high efficacy and low toxicity. Novel assembly methods are advancing clinical translation of these targeted therapies.
Area of Science:
- Biotechnology
- Nanomedicine
- Oncology
Background:
- Targeted liposomal therapeutics offer improved antitumour efficacy and reduced toxicity.
- Ligand selection is crucial for reducing immunogenicity, extending circulation, and ensuring tumour targeting and drug release.
Purpose of the Study:
- To review advancements in targeted liposome technology for cancer therapy.
- To discuss strategies for liposome targeting in solid tumours and vascular applications.
- To highlight the potential of ligand-targeted liposomes as a superior therapeutic approach.
Main Methods:
- Review of ligand selection criteria for targeted liposomes.
- Discussion of novel assembly techniques, including micellar insertion technology.
- Analysis of targeting strategies for solid tumours and vascular targets.
Main Results:
- Ligand-targeted liposomes demonstrate significant antitumour efficacy with favorable toxicity profiles.
- Advanced assembly methods facilitate the clinical translation of targeted liposome technology.
- Anti-HER2 immunoliposomal doxorubicin is progressing to Phase I clinical trials.
Conclusions:
- Ligand-targeted liposomes represent an advanced and advantageous therapeutic strategy.
- Ongoing clinical trials are expected to provide further insights into the potential of these therapies.
- The development of targeted liposomes is poised to significantly impact cancer treatment.
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