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Abstract #2530

An in-vitro deuterium NMR study to measure the efficacy of combinatorial therapy for diffuse intrinsic pontine glioma

Ritambhar Burman1, Weixing Zhang1, Laura Sanchez Hernandez1, Kiran Krishnamurthy1, Esther Pavao1, Sabah Nisar1, and Puneet Bagga1
1St. Jude Children's Research Hospital, Memphis, TN, United States

Synopsis

Keywords: Cancer, Spectroscopy, DIPG, Pediatrics, NMR

Motivation: There is a need for developing next generation of clinical trials by targeting selective pathways in diffuse intrinsic pontine glioma (DIPG).

Goal(s): We explore the impact of Vehicle (DMSO), Paxalisib, BAY-876, and their combination in patient-derived SJ-DIPGX7 cell line to evaluate their potential as a therapeutic strategy for patients with DIPG.

Approach: 2H-NMR spectra were longitudinally obtained in a cell suspension. We calculated the lactate flux turnover, which was validated using 100-run Monte-Carlo simulation. This outcome was further confirmed by conducting a glycolysis stress test.

Results: The combined therapy (Paxalisib + BAY-876) holds potential for enhancing its therapeutic effectiveness against DIPGs.

Impact: This study paves the way for future in-vitro and in-vivo studies to be conducted for monitoring efficacy of targeted therapeutic combination for DIPG.

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