Single-cell transcriptome analysis of the heterogeneous effects of differential expression of tumor PD-L1 on responding TCR-T cells

Conclusion: Overall, though the effector functionality of TCR-T cells was suppressed by increased expression percentages of tumor PD-L1 in vitro, scRNA-seq profiles revealed that both the anti-inflammatory and pro-inflammatory responses were triggered by a higher expression of tumor PD-L1. This suggests that the sole blockade of tumor PD-L1 might inhibit not only the anti-inflammatory response but also the pro-inflammatory response in the complicated tumor microenvironment. Thus, the outcome of PD-L1 intervention may depend on the final balance among the highly dynamic and heterogeneous immune regulatory circuits.

Source: Theranostics - April 19, 2021 Category: Molecular Biology Authors: Renpeng Ding, Shang Liu, Shanshan Wang, Huanyi Chen, Fei Wang, Qumiao Xu, Linnan Zhu, Xuan Dong, Ying Gu, Xiuqing Zhang, Cheng-Chi Chao, Qianqian Gao Tags: Research Paper Source Type: research