| Autor: |
Li Liu, Guoqiang Sun, Yongxiang Xia, Xuehao Wang, Hanyuan Liu, Tian Huang, Ziyi Chen, Weiwei Tang, Guangshun Sun, Hengsong Cao, Dawei Rong, Yuliang Wang, Xiaopei Hao, Zhiying Zheng, Junwei Kang |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Journal for ImmunoTherapy of Cancer, Vol 11, Iss 2 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2051-1426 |
| DOI: |
10.1136/jitc-2022-005126 |
| Popis: |
Background GLI-similar 1 (GLIS1) is one of of Krüppel-like zinc finger proteins, which are either stimulators or inhibitors of genetic transcription. Nevertheless, its effects on T cell were elusive.Methods In this study, we intend to explore the effects of GLIS1 on modulating the anticancer potency of CD8+ T cells in hepatocellular carcinoma (HCC). The expression of GLIS1 in CD8 peripheral blood mononuclear cell and CD8 tumor-infiltrating lymphocytes of HCC tissues was validated by quantificational real-time-PCR and flow cytometry. The anticancer potency of CD8+ T cells with GLIS1 knock down was confirmed in C57BL/6 mouse model and HCC patient-derived xenograft mice model. GLIS1–/– C57BL/6 mice was applied to explore the effects GLIS1 on tumor immune microenvironment. Chromatin immunoprecipitation and RNA transcriptome sequencing analysis were both performed in GLIS1-knock down of CD8+ T cells.Results GLIS1 was upregulated in exhausted CD8+ T cells in HCC. GLIS1 downregulation in CD8+ T cells repressed cancer development, elevated the infiltrate ability of CD8+ T cells, mitigated CD8+ T cell exhaustion and ameliorated the anti-PD1 reaction of CD8+ T cells in HCC. The causal link beneath this included transcriptional regulation of SGK1-STAT3-PD1 pathway by GLIS1, thereby maintaining the abundant PD1 expression on the surface of CD8+ T cells.Conclusion Our study revealed that GLIS1 promoted CD8+ T cell exhaustion in HCC through transcriptional regulating SGK1-STAT3-PD1 pathway. Downregulating the expression of GLIS1 in CD8+ T cells exerted an effect with anti-PD1 treatment synergistically, revealing a prospective method for HCC immune therapy. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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