Orthogonal programmed tri-modal tumor treatment based on structurally simple nanomedicines

Area of Science:

• Biomedical Engineering
• Materials Science
• Oncology

Background:

• Orthogonal multimodal therapy offers potent tumor ablation but often relies on complex nanomedicines.
• Developing structurally simple yet effective nanomedicines is crucial for practical clinical application.

Purpose of the Study:

• To design and characterize a structurally simple nanomedicine for orthogonal multimodal tumor ablation.
• To investigate the targeted therapeutic response of the nanomedicine within the tumor microenvironment.

Main Methods:

• Fabrication of boron-doped carbon quantum dots (B-CDs) modified with nicorandil (NIC) and epigallocatechin gallate (EGCG).
• Evaluation of NIC-induced nitric oxide (NO) release in response to glutathione (GSH).
• Assessment of EGCG-mediated heat shock protein 90 (HSP90) inhibition triggered by hydrogen peroxide (H2O2).
• Investigation of B-CDs-mediated photothermal therapy under near-infrared (NIR) light irradiation.

Main Results:

• A simple nanomedicine was successfully constructed using B-CDs, NIC, and EGCG.
• The nanomedicine demonstrated stimulus-responsive drug release and therapeutic action within the tumor microenvironment.
• NIC produced NO in response to GSH, and EGCG inhibited HSP90 due to H2O2.
• B-CDs generated localized hyperthermia under NIR light, and the entire process was monitored via fluorescence.

Conclusions:

• The developed nanomedicine provides a simple and effective platform for orthogonal multimodal tumor therapy.
• The system exhibits precise therapeutic control by responding to specific tumor microenvironmental cues and external stimuli.
• This approach holds promise for advanced cancer treatment strategies with enhanced specificity and efficacy.