George Burslem, PhD

University of Pennsylvania

Titles + affiliations

Assistant Professor, Biochemistry and Biophysics
University of Pennsylvania, The Perelman School of Medicine

Research

Protein Degradation Induced Epigenetic Reprograming as a Therapeutic Strategy for MLL-r Leukemias

Summary

Many cancers result from a genetic mutation causing an “always on” protein. Current treatments are based on the de-activation of the proteins by blocking that protein’s active site. Herein I propose an alternative approach in which proteins are permanently degraded rather than temporarily deactivated, which may prove to be a more favourable form of therapy. To do this, I will take advantage of the cell’s own natural ability to degrade proteins when they are in excess or no longer needed. I will design and prepare compounds which recruit the native protein degradation machinery to the target proteins by creating a bridge between protein degradation components and the target protein. We propose to prepare compounds capable of the degradation of target proteins involved in leukemia. Specifically, we focus on PRMT1, which is a protein important in acute myeloid leukemia (AML), especially in children. We will assess these compounds for the ability to degrade target proteins in cell-based models. It is conceivable that by employing protein degradation, it may be possible to completely remove all disease-causing protein and restore cancerous cells to their normal pathway. The ultimate goal is to produce a drug that may be useful for the treatment of AML while simultaneously increasing our understanding of what causes cancer.

Impact

The Leukemia Research Foundation grant allowed us to pursue high-risk, high-reward research towards novel therapeutic strategies for a key liability in AML where other approaches have failed. The learning from this grant provided critical proof of concept data and will form the foundation for future work towards novel approaches for blood cancer treatments.

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Leukemia Research Foundation grant
$100K awarded in 2021

Disease focus
Acute myeloid leukemia (AML)
Acute lymphoblastic leukemia (ALL)

Research focus
Causes/risk factors (epigenetics)