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Abstract #0069

MRI-guided thermoradiotherapy of glioblastoma multiforme using Gd3+-loaded melanin nanoparticles reverses anoikis resistance pathway

Ying Shi1, Jianxiu Lian2, Yuefei Ma2, and Pengfei Liu3
1Department of Magnetic Resonance, First Affiliated HosFirst Affiliated Hospital of Harbin Medical University, Harbin, China, 2Philips Healthcare, Beijing, China, 3Department of Magnetic Resonance, First Affiliated Hospital of Harbin Medical University, Harbin, China

Synopsis

Keywords: Tumors (Pre-Treatment), Tumors, Glioblastoma Multiforme; Magnetic Resonance Imaging; Thermoradiotherapy; Anoikis resistance; Melanin Nanoparticle.

Motivation:
Glioblastoma multiforme is a highly aggressive cancer, of which anoikis resistance contributes to the strong resistance to standard therapies resulting in a poor prognosis.

Goal(s): MRI-guided thermoradiotherapy is an attractive and innovative strategy for treating GBM, offering superior biocompatibility and therapeutic efficacy compared to conventional therapies.

Approach: Herein, we synthesized Gd-MNP-PEGs that present excellent MR imaging ability, photothermal conversion capability, and radiosensitizing effect.

Results: It contributes to i) MR imaging of GBM to identify tumor boundaries, ii) radiosensitizing GBM with photothermal therapy to inhibit the proliferation and metastasis of GBM, iii) reversing anoikis resistance via thermoradiotherapy to improve therapeutic outcomes.

Impact: This study presents biocompatible nanoplatforms that allow MR imaging, high anti-tumor thermoradiotherapy efficacy, and negligible side effects in the treatment of GBM.

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Keywords