Scientists uncover protein that helps cancer cells dodge CAR T-cell therapy

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Scientists at City of Hope identified a protein that could help prevent CAR T-cell therapy antigen escape. The research, published in the journal Cell, could lead to more personalized therapies that improve cancer patients’ survival.

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The landscape of cancer care in America faces critical challenges: geographic disparities in access, socioeconomic barriers to advanced treatments and the increasing complexity of precision medicine that outpaces individual providers’ ability to stay current. At City of Hope, we are addressing these systemic issues through a bold expansion that brings world-class cancer care and research closer to where patients live.
When I first proposed targeting PCNA (proliferating cell nuclear antigen) as a therapeutic approach, the response I got was: “No one will ever make a drug against PCNA. It’s undruggable.” The protein lacks enzymatic activity, has a disordered region, and binds to over 200 other proteins within the cell. From a traditional drug development perspective, these characteristics made PCNA an impossible target.

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