Cited by 224Drug Transport and Resistance MechanismsNanoparticle-Based Drug DeliveryDrug Solubulity and Delivery Systems

Pluronics and MDR reversal: an update

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Alakhova, Daria Y., Kabanov, Alexander V.·2014·Molecular Pharmaceutics

Abstract

Multidrug resistance (MDR) remains one of the biggest obstacles for effective cancer therapy. Currently there are only few methods that are available clinically that are used to bypass MDR with very limited success. In this review we describe how MDR can be overcome by a simple yet effective approach of using amphiphilic block copolymers. Triblock copolymers of poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO), arranged in a triblock structure PEO-PPO-PEO, Pluronics or “poloxamers”, raised a considerable interest in the drug delivery field. Previous studies demonstrated that Pluronics sensitize MDR cancer cells resulting in increased cytotoxic activity of Dox, paclitaxel, and other drugs by 2–3 orders of magnitude. Pluronics can also prevent the development of MDR in vitro and in vivo. Additionally, promising results of clinical studies of Dox/Pluronic formulation reinforced the need to ascertain a thorough understanding of Pluronic effects in tumors. These effects are extremely comprehensive and appear on the level of plasma membranes, mitochondria, and regulation of gene expression selectively in MDR cancer cells. Moreover, it has been demonstrated recently that Pluronics can effectively deplete tumorigenic intrinsically drug-resistant cancer stem cells (CSC). Interestingly, sensitization of MDR and inhibition of drug efflux transporters is not specific or selective to Pluronics. Other amphiphilic polymers have shown similar activities in various experimental models. This review summarizes recent advances of understanding the Pluronic effects in sensitization and prevention of MDR.

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  • Certain Pluronic block copolymers can act as biological response modifiers that sensitize multidrug-resistant and cancer stem cells to anticancer chemotherapeutics.

    “A notable property of select Pluronic® block copolymers to act as biological response modifiers to sensitize multidrug resistant (MDR) and cancer stem cells with respect to anticancer chemotherapeutics was widely reported and reviewed from mechanistic and translational points of view [25, 104].”

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Authors
Alakhova, D. Y., & Kabanov, A. V.
Affiliations
University of North Carolina at Chapel Hill (US)
Corresponding author
Kabanov, Alexander V.
Venue
Molecular Pharmaceutics
Published
2014-06-20
Volume
11
Issue
8
Pages
2566-2578
ISSN
  • 1543-8384 (ISSN-L)
  • 1543-8392
OpenAlex
W2007080192
Cited by
224
References
136
Citations by year
2026: 9 · 2025: 12 · 2024: 12 · 2023: 18 · 2022: 14 · 2021: 18 · 2020: 23 · 2019: 21 · 2018: 26 · 2017: 25 · 2016: 28 · 2015: 17 · 2014: 1
FWCI
2.73
Type
journal article
Language
en
Open access
Locations
  • Molecular Pharmaceutics (publishedVersion, other-oa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Carolina Digital Repository (University of North Carolina at Chapel Hill) (submittedVersion)
  • UNC Libraries
Funders
  • National Institutes of Health
  • National Cancer Institute (2R01 CA89225, U01CA151806, R01CA089225, UO1 CA151806)
  • National Institute of General Medical Sciences (P20GM103480)
  • National Center for Research Resources (P20RR021937)
Topics
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
  • Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmaceutical Science › Drug Solubulity and Delivery Systems
Keywords
poloxamer, multidrug resistance, multidrug resistance reversal, amphiphilic block copolymers, PEO-PPO-PEO triblock copolymer, doxorubicin, paclitaxel, efflux pumps, cancer stem cells, drug delivery, tumor cell membrane, mitochondria, gene expression regulation
MeSH terms
Animals, Biological Transport, Cell Membrane, Humans, Lipids, Mitochondria, Neoplasms, Polyethylene Glycols, Propylene Glycols, Neoplastic Stem Cells, Drug Delivery Systems, Apoptosis, Drug Resistance, Multiple, Drug Resistance, Neoplasm, ATP Binding Cassette Transporter, Subfamily B, Member 1, Poloxamer, Membrane Microdomains, Cell Line, Tumor

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