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Stimuli-responsive nanoscale drug delivery systems for cancer therapy
Li Li1,2, Wu-Wei Yang1, Dong-Gang Xu2
1a Department of Oncology Minimally Invasive , Hospital of PLA, Clinical College of Anhui Medical University , Beijing , PR China.
Abstract:
Currently, with the rapid development of nanotechnology, novel drug delivery systems (DDSs) have made rapid progress, in which nanocarriers play an important role in the tumour treatment. In view of the conventional chemotherapeutic drugs with many restrictions such as nonspecific systemic toxicity, short half-life and low concentration in the tumour sites, stimuli-responsive DDSs can deliver anti-tumour drugs targeting to the specific sites of tumours. Owing to precise stimuli response, stimuli-responsive DDSs can control drug release, so as to improve the curative effects, reduce the damage of normal tissues and organs, and decrease the side effects of traditional anticancer drugs. At present, according to the physicochemical properties and structures of nanomaterials, they can be divided into three categories: (1) endogenous stimuli-responsive materials, including pH, enzyme and redox responsive materials; (2) exogenous stimuli-responsive materials, such as temperature, light, ultrasound and magnetic field responsive materials; (3) multi-stimuli responsive materials. This review mainly focuses on the researches and developments of these novel stimuli-responsive DDSs based on above-mentioned nanomaterials and their clinical applications.
Insights
Stimuli-responsive drug delivery systems (DDSs) using nanocarriers offer targeted tumor treatment. These advanced DDSs improve efficacy and reduce side effects compared to traditional chemotherapy.
Area of Science:
- Nanotechnology
- Biomedical Engineering
- Materials Science
Background:
- Conventional chemotherapy faces limitations including systemic toxicity, short drug half-life, and low tumor site concentration.
- Novel nanocarrier-based drug delivery systems (DDSs) are crucial for advancing tumor treatment.
- Stimuli-responsive DDSs offer targeted drug delivery to tumor sites, overcoming conventional drug limitations.
Purpose of the Study:
- To review the research and development of novel stimuli-responsive DDSs for tumor treatment.
- To discuss the classification and applications of nanomaterials in stimuli-responsive DDSs.
- To highlight the clinical potential of these advanced drug delivery systems.
Main Methods:
- Categorization of stimuli-responsive nanomaterials based on physicochemical properties and structure.
- Review of endogenous stimuli-responsive materials (pH, enzyme, redox).
- Review of exogenous stimuli-responsive materials (temperature, light, ultrasound, magnetic field) and multi-stimuli responsive materials.
Main Results:
- Stimuli-responsive DDSs enable controlled drug release through precise responses to internal or external stimuli.
- These systems enhance therapeutic effects by increasing drug concentration at tumor sites.
- Reduced damage to normal tissues and organs, and fewer side effects are achieved.
Conclusions:
- Stimuli-responsive DDSs represent a significant advancement in targeted cancer therapy.
- Nanomaterials are key components in developing effective stimuli-responsive DDSs.
- Further research and clinical applications of these DDSs hold great promise for improving patient outcomes.
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