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Updated: Aug 26, 2025
A Novel Technique for Generating and Observing Chemiluminescence in a Biological Setting
Published on: March 9, 2017
Recent advances in luminescent metallacycles/metallacages for biomedical imaging and cancer therapy
Yida Pang1,2, Chonglu Li2, Hongping Deng1
1Department of Vascular Surgery, Remin Hospital of Wuhan University, Wuhan 430079, P. R. China. hpdeng@whu.edu.cn.
Abstract:
Small molecule metal-based drugs have shown great achievements in preclinical and clinical applications. In particular, platinum based antitumor drugs are well established in current cancer chemotherapy. However, they face problems such as poor selectivity, severe toxicity and side effects, strong drug resistance, poor uptake/retention in vivo, and difficulty in monitoring the therapeutic effect in real time, which largely limit their widespread use in clinical applications. The metallacycles/metallacages formed by the coordination-driven self-assembly of highly emitting ligands can solve the above problems. Importantly, acceptors with chemotherapeutic properties in the metallacycles/metallacages can be combined with luminescent ligands to achieve a combination of chemotherapy, imaging contrast agents and multifunctional therapeutic platforms. Here, this review provides an insight into the paradigm of self-assembled metallacycles/metallacages in biological applications, from mono-chemotherapeutic drugs to excellent fluorescent imaging contrast agents and multifunctional therapeutic platforms.
Insights
Self-assembled metallacycles and metallacages offer advanced metal-based cancer therapies. These structures combine chemotherapy with imaging for improved treatment monitoring and efficacy.
Area of Science:
- Supramolecular Chemistry
- Medicinal Chemistry
- Nanotechnology
Background:
- Metal-based drugs, particularly platinum compounds, are vital in cancer chemotherapy.
- Current limitations include poor selectivity, toxicity, drug resistance, and challenges in real-time therapeutic monitoring.
- These issues restrict the clinical application of existing metal-based anticancer agents.
Purpose of the Study:
- To explore the potential of self-assembled metallacycles and metallacages in biological applications.
- To highlight their advantages over traditional small molecule metal-based drugs.
- To review their role as chemotherapeutic agents, imaging contrast agents, and multifunctional therapeutic platforms.
Main Methods:
- Coordination-driven self-assembly of highly emitting ligands with therapeutic acceptors.
- Integration of chemotherapeutic agents within metallacycle/metallacage frameworks.
- Utilizing luminescent properties for imaging and therapeutic monitoring.
Main Results:
- Metallacycles/metallacages overcome limitations of conventional metal-based drugs like poor selectivity and toxicity.
- These structures enable combined chemotherapy and fluorescent imaging.
- They serve as versatile platforms for multifunctional therapeutic strategies.
Conclusions:
- Self-assembled metallacycles and metallacages represent a promising paradigm in metal-based drug development.
- They offer enhanced therapeutic efficacy, reduced toxicity, and real-time monitoring capabilities.
- These advanced materials pave the way for next-generation cancer treatment platforms.
