Brief · 2026-07-29

A preprint demonstrates engineering CD8-41BB fusion receptors into TCR-T cells to provide co-stimulation and restore helper cell activity, addressing key limitations in solid tumor efficacy.bioRxiv

This methodological advance highlights the potential for enhancing TCR-T durability through synthetic biology approaches that mimic CAR-T signaling.

AI / MethodsyesterdayNew

Engineering antigen-driven co-stimulation and T helper cell activity into TCR-T cells with CD8-41BB fusion receptors enhances anti-tumor activity

Researchers engineered TCR-T cells with CD8-41BB fusion receptors to overcome the lack of co-stimulation and helper activity typical in TCR therapies. While wild-type CD8beta promoted CD4+ T cell activity, it failed to drive durable responses against WT1 in mouse models, suggesting further optimization is needed for high-affinity targets.

biorxiv · yesterday · Dutta, I.; Oh, J.; Cam, L.; Luther, A.; Sharma, P.; Balwani, I.; Peter, J.; Liu, D.; Mille

CD8-41BB fusion receptors enhance TCR-T efficacy in preprint

Engineering antigen-driven co-stimulation and T helper cell activity into TCR-T cells with CD8-41BB fusion receptors enhances anti-tumor activity

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