Project description:Using the CRISPR genome editing system and a cancer cell/activated CD8+ T cell co-culture system, we identified the key genes in HCC cells that enhanced HCC cell tolerance to CD8+ T cells.
Project description:scRNA-seq was performed and data generated to examine the transcriptomic differences between PD-1/CTLA4 double-positive and double-negative CD4+ T cells in HIV patients.
Project description:Combining immunotherapy with other treatments improves survival in colorectal cancer, yet some patients remain unresponsive. Tumor-associated macrophages (TAMs) are a key immune cell population driving this immunotherapy resistance and fostering an immunosuppressive microenvironment. To overcome this, we screened a deubiquitinating enzyme (DUB) library targeting TAMs and identified USP14 as specifically upregulated in TAMs. Inhibiting USP14 reversed their pro-tumor functions, promoted M1 polarization, enhanced tumor cell killing, and activated effector T cells. USP14 inhibition also increased PD-L1 expression on tumor cells, alleviating T-cell suppression. In vivo, combining a USP14 inhibitor with an anti-PD-1 antibody synergistically enhanced immunotherapy efficacy, suppressed tumor progression, and improved survival in a mouse colon cancer model. Thus, USP14 is a promising target to overcome immunotherapy resistance in colorectal cancer.
Project description:We studied the membrane protein compositions of Streptococcus pneumoniae WT and scRNA mutant strains, with or without the CSP1 induction into competence state.
Project description:To dissect whether PD-1+CD8+ T cells are exhausted in lupus nephritis, scRNA-seq were performed to define the heterogeneous and pathologic subset.
Project description:To investigate the impact of Card11 on TIL differentiation, we isolated TILs from B16-F10 tumors of WT mice, E134G mice, and K215M mice and performed scRNA seq. We also sorted tumor-infiltrating lymphocytes (TILs) from melanoma(B16-F10) of WT mice and conducted scRNA and scTCR sequencing. To further investigate the impact of Card11 on TCR clonal diversity, we sorted CD8 T cells from melanoma WT mice or K215M mice and performed scRNA and scTCR sequencing.