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Updated: Feb 12, 2026

Nanomechanics of Drug-target Interactions and Antibacterial Resistance Detection
Published on: October 25, 2013
Aptamers as targeting ligands and therapeutic molecules for overcoming drug resistance in cancers
Gang Zhou1, Olivier Latchoumanin1, Lionel Hebbard1
1Storr Liver Centre, Westmead Institute for Medical Research, University of Sydney and Westmead Hospital, Westmead, NSW 2145, Australia.
Abstract:
Traditional anticancer therapies are often unable to completely eradicate the tumor bulk due to multi-drug resistance (MDR) of cancers. A number of mechanisms such as micro-environmental stress and overexpression of drug efflux pumps are involved in the MDR process. Hence, therapeutic strategies for overcoming MDR are urgently needed to improve cancer treatment efficacy. Aptamers are short single-stranded oligonucleotides or peptides exhibiting unique three-dimensional structures and possess several unique advantages over conventional antibodies such as low immunogenicity and stronger tissue-penetration capacity. Aptamers targeting cancer-associated receptors have been explored to selectively deliver a therapeutic cargo (anticancer drugs, siRNAs, miRNAs and drug-carriers) to the intratumoral compartment where they can exert better tumor-killing effects. In this review, we summarize current knowledge of the multiple regulatory mechanisms of MDR, with a particular emphasis on aptamer-mediated novel therapeutic agents and strategies that seek to reversing MDR. The challenges associated with aptamer-based agents and approaches are also discussed.
Insights
Aptamers offer novel strategies to overcome cancer multi-drug resistance (MDR) by targeting cancer cells and delivering therapeutics. This review explores aptamer-based agents for reversing MDR and improving cancer treatment efficacy.
Area of Science:
- Biotechnology
- Oncology
- Molecular Biology
Background:
- Multidrug resistance (MDR) in cancer limits the efficacy of traditional therapies.
- Mechanisms of MDR include micro-environmental stress and drug efflux pump overexpression.
- Novel therapeutic strategies are crucial for overcoming MDR and enhancing cancer treatment outcomes.
Purpose of the Study:
- To review the mechanisms regulating MDR in cancer.
- To highlight aptamer-mediated therapeutic agents and strategies for reversing MDR.
- To discuss the challenges and potential of aptamer-based approaches in cancer therapy.
Main Methods:
- Literature review of current knowledge on MDR mechanisms.
- Focus on aptamer technology for targeted cancer therapy.
- Analysis of aptamer-based agents and strategies for MDR reversal.
Main Results:
- Aptamers, as short oligonucleotides or peptides, offer advantages over antibodies for cancer treatment.
- Aptamers can be engineered to target cancer-associated receptors for selective drug delivery.
- Aptamer-mediated strategies show promise in overcoming MDR by delivering therapeutic payloads directly into tumors.
Conclusions:
- Aptamers represent a promising platform for developing novel therapeutic agents against MDR cancers.
- Targeted delivery of therapeutics via aptamers can enhance tumor-killing effects and improve treatment efficacy.
- Further research and development are needed to address challenges in aptamer-based cancer therapy.
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