Nature communications · 2025
Bladder cancer variants share aggressive features including a CA125+ cell state and targetable TM4SF1 expression.
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Yang Heiko, Song Hanbing, Yip Elizabeth, Gilpatrick Timothy, Chang Kevin, Allegakoen Paul, Lu Kevin L, Hui Keliana, Pham Julia H, Kasap Corynn, Kumar Vipul, Gayle Janae, Stohr Bradley A, Cornelia Ding Chien-Kuang, Wiita Arun P, Meng Maxwell V, Chou Jonathan, Porten Sima P, Huang Franklin W
Аннотация
Histologic variant (HV) subtypes of bladder cancer are clinically aggressive tumors that are more resistant to standard therapy compared to conventional urothelial carcinoma (UC). Little is known about the transcriptional programs that account for their biological differences. Here we show using single cell analysis that HVs harbor a tumor cell state characterized by expression of MUC16 (CA125), MUC4, and KRT24. This cell state is enriched in metastases, predicted to be highly resistant to chemotherapy, and linked with poor survival. We also find enriched expression of TM4SF1, a transmembrane protein, in HV tumor cells. Chimeric antigen receptor (CAR) T cells engineered against TM4SF1 protein demonstrated in vitro and in vivo activity against bladder cancer cell lines in a TM4SF1 expression-dependent manner, highlighting its potential as a therapeutic target.