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Published on: December 13, 2016
Sieging tumor cells using an amorphous ferric coordination polymer
Yanli Li1, Ruoqi Zhang1, Yuanye Dang1
1Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China. tgong@gzhmu.edu.cn.
This study introduces a novel ferric coordination polymer (FeCP) strategy to combat cancer metastasis by consolidating the extracellular matrix (ECM) and enhancing chemodynamic therapy (CDT). This approach significantly reduces tumor spread and improves survival rates.
Area of Science:
- Biomedical Engineering
- Materials Science
- Oncology
Background:
- Cancer metastasis is a primary cause of treatment failure.
- Conventional therapies often damage the extracellular matrix (ECM), increasing metastasis risk.
- Developing strategies to manage ECM during cancer treatment is crucial.
Purpose of the Study:
- To develop a novel therapeutic strategy using ferric coordination polymers (FeCPs) to "siege" tumor cells.
- To consolidate the extracellular matrix (ECM) and inhibit metastasis.
- To enhance cancer treatment efficacy through combined ECM consolidation and chemodynamic therapy (CDT).
Main Methods:
- Ferric coordination polymers (FeCPs) were designed to disintegrate in the acidic tumor microenvironment.
- Released salicylic acid (SA) inhibited heparinase to consolidate ECM.
- Released 2,5-dihydroxyterephthalic acid (DHTA) enhanced Fe-mediated chemodynamic therapy (CDT).
- An orthotopic 4T1 breast tumor model was used for in vivo evaluation.
Main Results:
- FeCPs effectively consolidated the ECM by inhibiting heparinase activity.
- DHTA facilitated enhanced Fe-mediated CDT.
- Tumor growth and metastasis were significantly inhibited.
- Lung metastasis was reduced by approximately 90% in the 4T1 breast tumor model.
- Survival rate improved by 70% post-treatment.
Conclusions:
- The "sieging tumor cells" strategy using FeCPs offers a promising approach for cancer treatment.
- Consolidating the ECM in combination with self-enhanced CDT effectively inhibits tumor growth and metastasis.
- This approach presents a new avenue for managing malignant tumors and reducing treatment-induced metastasis.
