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Updated: Jan 3, 2026
Preparation and Characterization of Lipophilic Doxorubicin Pro-drug Micelles
Published on: August 2, 2016
A bottlebrush-architectured dextran polyprodrug as an acidity-responsive vector for enhanced chemotherapy efficiency
Tian Zhang1, Yajun Wang1, Xianbin Ma1
1Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China. zgxu@swu.edu.cn yjkang@swu.edu.cn and Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Southwest University, Chongqing 400715, P. R. China.
Researchers developed acid-activatable nano-prodrugs (DOM@DOX) that release chemotherapy drugs specifically in tumors. This targeted delivery enhances efficacy and reduces side effects for improved cancer treatment.
Area of Science:
- Biomedical Engineering
- Nanomedicine
- Drug Delivery
Background:
- Tumor microenvironments have unique acidic conditions.
- Acidic conditions can be exploited for targeted drug release.
- Current cancer therapies face challenges with drug leakage and poor stability.
Purpose of the Study:
- To design and synthesize acid-activatable supramolecular nano-prodrugs.
- To achieve targeted delivery of doxorubicin (DOX) in tumors.
- To enhance cancer treatment efficacy and reduce side effects.
Main Methods:
- Synthesized bottlebrush architecture nano-prodrugs (DOM@DOX) using dextran (DEX) and polyethylene glycol (PEG).
- Conjugated doxorubicin (DOX) via an acidity-responsive hydrazine bond.
- Utilized self-assembly for stable nano-sized spherical formation and evaluated drug loading capacity.
Main Results:
- DOM@DOX exhibited high doxorubicin loading (up to 48 wt%).
- The nano-prodrug demonstrated stability in aqueous solutions and acid-triggered DOX release.
- In vivo studies showed good intratumoral permeability, circulation stability, and significant tumor suppression.
Conclusions:
- Acid-activatable nano-prodrugs offer a promising strategy for targeted cancer chemotherapy.
- DOM@DOX effectively delivers drugs to tumors, improving therapeutic outcomes.
- This approach represents a new generation of nanomedicine for enhanced chemotherapy.
