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Updated: May 27, 2026

Polymalic Acid-based Nano Biopolymers for Targeting of Multiple Tumor Markers: An Opportunity for Personalized Medicine?
Published on: June 13, 2014
Molecular-targeted nanotherapies in cancer: enabling treatment specificity
Elvin Blanco1, Angela Hsiao, Guillermo U Ruiz-Esparza
1Department of Nanomedicine, The Methodist Hospital Research Institute, Houston, TX 77030, USA.
Abstract:
Chemotherapy represents a mainstay and powerful adjuvant therapy in the treatment of cancer. The field has evolved from drugs possessing all-encompassing cell-killing effects to those with highly targeted, specific mechanisms of action; a direct byproduct of enhanced understanding of tumorigenic processes. However, advances regarding development of agents that target key molecules and dysregulated pathways have had only modest impacts on patient survival. Several biological barriers preclude adequate delivery of drugs to tumors, and remain a formidable challenge to overcome in chemotherapy. Currently, the field of nanomedicine is enabling the delivery of chemotherapeutics, including repositioned drugs and siRNAs, by giving rise to carriers that provide for protection from degradation, prolonged circulation times, and increased tumor accumulation, all the while resulting in reduced patient morbidity. This review aims to highlight several innovative, nanoparticle-based platforms with the potential of providing clinical translation of several novel chemotherapeutic agents. We will also summarize work regarding the development of a multistage drug delivery strategy, a robust carrier platform designed to overcome several biological barriers while en route to tumors.
Insights
Nanomedicine enhances chemotherapy by using nanoparticle carriers to improve drug delivery to tumors, overcoming biological barriers and reducing patient side effects. This approach holds promise for clinical translation of novel cancer therapies.
Area of Science:
- Oncology
- Nanomedicine
- Drug Delivery
Background:
- Chemotherapy is a cornerstone of cancer treatment, evolving towards targeted therapies.
- Despite advances, targeted agents have shown modest survival benefits due to delivery challenges.
- Biological barriers impede effective drug delivery to tumors, limiting treatment efficacy.
Purpose of the Study:
- To review innovative nanoparticle-based platforms for chemotherapy delivery.
- To highlight strategies for overcoming biological barriers in cancer treatment.
- To discuss the clinical translation potential of novel chemotherapeutic agents.
Main Methods:
- Review of current nanomedicine approaches for drug delivery.
- Summary of nanoparticle carrier systems protecting drugs from degradation.
- Discussion of multistage drug delivery strategies.
Main Results:
- Nanoparticle carriers improve drug protection, circulation time, and tumor accumulation.
- Nanomedicine facilitates the delivery of repositioned drugs and siRNAs.
- Multistage delivery strategies aim to overcome biological barriers effectively.
Conclusions:
- Nanoparticle-based platforms show significant potential for clinical translation.
- Improved drug delivery via nanomedicine can reduce patient morbidity.
- Innovative strategies are crucial for advancing chemotherapy efficacy.
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