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Abstract #0169

Multifunctional Nanocomposite for Enhanced Diagnosis and Therapeutic Intervention in Breast Cancer via T1-T2 dual-enhanced and NIR II imaging

Xiuhong Guan1, Xin Huang2, Zhiyong Wang3, Guoxi Xie2, and Ci He4
1Department of Radiology, Jinan University, Guangzhou, China, 2School of Biomedical Engineering, Guangzhou Medical University, Guangzhou, China, 3School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, China, 4Department of Radiology, The Sixth Affiliated Hospital (Qingyuan People's Hospital), Guangzhou Medical University, Guangzhou, China

Synopsis

Keywords: Small Animals, Cancer, cancer immunotherapy, gas-photothermal therapy, magnetic resonance imaging, stimulator of interferon genes pathways, triple-negative breast cancer

Motivation: Breast cancer exhibits high incidence and mortality rates. We reports a functional nanosystem composed of Pluronic F127, manganese chloride (MnCl2), and IR780 dye. The nanosystem possesses multimodal imaging capabilities using near-infrared II (NIR-II) and T1-T2 dual-enhanced MRI, guiding photothermal therapy, and enhancing the STING pathway to combat triple-negative breast cancer.

Goal(s): Effectively suppress TNBC growth and metastasis, with good biocompatibility..

Approach: MC@NS nanosystem could diagnose the tumor and confirm the time window of treatment via NIR II/MRI dual-modal imaging, and effectively suppress tumor growth thought phototherapy, STING pathway and anti-tumor immunity.

Results: It effectively suppress tumor growth thought phototherapy, STING pathway and immunotherapy.

Impact: This nanosystem, through T1-T2 dual-enhanced MRI and NIR II multimodal imaging, enabled tumor diagnosis and guided photothermal therapy, effectively suppressing tumor growth by combining photothermal therapy and STING pathway to enhance immunogenic cell death, providing a novel theranostic strategy.

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Keywords