1. PD-1 - CD45RA + effector-memory CD8 T cells and CXCL10 + macrophages are associated with response to atezolizumab plus bevacizumab in advanced hepatocellular carcinoma.
- Author
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Cappuyns S, Philips G, Vandecaveye V, Boeckx B, Schepers R, Van Brussel T, Arijs I, Mechels A, Bassez A, Lodi F, Jaekers J, Topal H, Topal B, Bricard O, Qian J, Van Cutsem E, Verslype C, Lambrechts D, and Dekervel J
- Subjects
- Humans, CD8-Positive T-Lymphocytes, Bevacizumab pharmacology, Bevacizumab therapeutic use, Programmed Cell Death 1 Receptor, Memory T Cells, Leukocyte Common Antigens, Macrophages, Receptors, Antigen, T-Cell, Chemokine CXCL10, Carcinoma, Hepatocellular drug therapy, Liver Neoplasms drug therapy
- Abstract
The combination of atezolizumab plus bevacizumab (atezo/bev) has dramatically changed the treatment landscape of advanced HCC (aHCC), achieving durable responses in some patients. Using single-cell transcriptomics, we characterize the intra-tumoural and peripheral immune context of patients with aHCC treated with atezo/bev. Tumours from patients with durable responses are enriched for PDL1
+ CXCL10+ macrophages and, based on cell-cell interaction analysis, express high levels of CXCL9/10/11 and are predicted to attract peripheral CXCR3+ CD8+ effector-memory T cells (CD8 TEM ) into the tumour. Based on T cell receptor sharing and pseudotime trajectory analysis, we propose that CD8 TEM preferentially differentiate into clonally-expanded PD1- CD45RA+ effector-memory CD8+ T cells (CD8 TEMRA ) with pronounced cytotoxicity. In contrast, in non-responders, CD8 TEM remain frozen in their effector-memory state. Finally, in responders, CD8 TEMRA display a high degree of T cell receptor sharing with blood, consistent with their patrolling activity. These findings may help understand the possible mechanisms underlying response to atezo/bev in aHCC., (© 2023. The Author(s).)- Published
- 2023
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