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Abstract #5153

Dynamic Monitoring of the Treatment Effect of E. coli and PD-1 Inhibitor in Mouse Glioblastoma: using High-Field Animal Multimodal MRI

Guochen Li1, Guangrong Zheng2, Tengfei Ke3, and Chengde Liao2
1Yan'an Hospital Affiliated to Kunming Medical University, Kunming, China, China, 2Yan'an Hospital Affiliated to Kunming Medical University, Kunming, China, 3The Third Affiliated Hospital of Kunming Medical University, Kunming, China

Synopsis

Motivation: Immunotherapy for glioma has demonstrated promising potential in preclinical studies. However, the dynamic assessment of its effectiveness in the brain presents a significant challenge.

Goal(s): To continuously monitor the effectiveness of PD-1 inhibitors when combined with bioengineered Escherichia coli in the treatment of GBM in mouse model, utilizing high-field animal MRI technology.

Approach: Throughout the treatment of glioma-bearing mouse with E. coli and/or PD-1 inhibitors, we employed multimodal MRI and immunofluorescence techniques to routinely observe changes within the tumor microenvironment.

Results: The high-field MRI technology utilized for monitoring the tumor microenvironment revealed positive outcomes for the combination therapy, consistent with our laboratory findings.

Impact: Our research suggests that the fusion of bioengineered Escherichia coli and PD-1 inhibitors may herald a groundbreaking development in GBM immunotherapy, with high-field MRI technology serving as a potent tool for the real-time evaluation of this combination therapy's efficacy.

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