Epigenetic Reprogramming of Autophagy Drives Mutant IDH1 Glioma Progression and Response to Radiation – UROP Spring Symposium 2023

Epigenetic Reprogramming of Autophagy Drives Mutant IDH1 Glioma Progression and Response to Radiation

Elijah Uribe

Elijah Uribe photo

Pronouns: hehim

Research Mentor(s): Maria Castro
Research Mentor School/College/Department: Neurosurgery / Medicine
Program: UROPF
Session: Session 4 (1:40pm – 2:30pm)
Authors: Elijah Uribe

Abstract

mIDH1 gliomas start like normal brain tumors, but grow more aggressively due to gain of function mutations. These mutations (TP53 & ATRX) cause an increase in autophagy related genes (Atgs) allowing the tumor to use autophagy to recycle dead cell parts and incorporate them into its mass. Tumor-causing plasmids were transposed into infant mice to grow mIDH1 glioma models. Through analysis of these mIDH1 tumors, it was seen that the gliomas cells were sensitive to autophagy inhibition. In-vivo autophagy blocking via synthetic protein nanoparticles (SPNPs) targeting Atgs proved to increase radiation sensitivity within the glioma cells. These findings suggest that autophagy is a vital part of mIDH1 glioma growth and that by inhibiting it, radiation therapy is more effective resulting in tumor regression, increased survival rate, and a more optimistic prognosis.

Health Science

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