Gene Therapeutic Approaches to Overcome ABCB1-Mediated Drug Resistance

Area of Science:

• Oncology
• Molecular Biology
• Pharmacology

Background:

• Multidrug resistance (MDR) is a significant clinical obstacle in cancer therapy, often driven by ATP-binding cassette (ABC)-transporter overexpression.
• ABCB1 (MDR1/P-glycoprotein) is a key transporter implicated in MDR, with direct inhibition strategies yielding disappointing clinical trial results.
• This necessitates exploring alternative therapeutic approaches to overcome MDR in cancer patients.

Purpose of the Study:

• To review and discuss experimental therapeutic strategies for overcoming MDR in cancer.
• To focus on gene therapeutic approaches as an alternative to traditional drug inhibition.
• To evaluate various delivery strategies for reversing MDR in preclinical cancer models.

Main Methods:

• Review of gene therapeutic techniques including antisense, ribozyme, RNA interference, and CRISPR/Cas9-based methods.
• Analysis of diverse delivery strategies employed in vitro and in vivo tumor models.
• Discussion of results and conclusions from studies investigating these gene-based MDR reversal strategies.

Main Results:

• Gene therapeutic approaches demonstrate potential in overcoming MDR mediated by ABC-transporters.
• Various delivery systems have been explored to enhance the efficacy of gene therapies in different cancer models.
• Preclinical studies show promise for gene-based strategies in reversing MDR, although clinical translation challenges remain.

Conclusions:

• Gene therapy represents a promising avenue for overcoming MDR in cancer, offering an alternative to limited small-molecule inhibitors.
• The development and optimization of delivery systems are crucial for the successful application of gene-based MDR reversal strategies.
• Further research and clinical translation are warranted to fully realize the potential of gene therapy in combating multidrug-resistant cancers.