Lnc-chop Promotes Immunosuppressive Function of Myeloid-Derived Suppressor Cells in Tumor and Inflammatory Environments

被引:69
作者
Gao, Yunhuan
Wang, Tiantian
Li, Yuanyuan
Zhang, Yuan
Yang, Rongcun
机构
[1] Nankai Univ, State Key Lab Med Chem Biol, Tianjin 300071, Peoples R China
[2] Nankai Univ, Key Lab Bioact Mat, Minist Educ, Tianjin 300071, Peoples R China
[3] Nankai Univ, Sch Med, Dept Immunol, Tianjin 300071, Peoples R China
基金
中国国家自然科学基金; 以色列科学基金会;
关键词
ENDOPLASMIC-RETICULUM; GENE-EXPRESSION; NONCODING RNAS; MESSENGER-RNA; CANCER; TRANSCRIPTION; DIFFERENTIATION; ACTIVATION; CHROMATIN; MECHANISM;
D O I
10.4049/jimmunol.1701721
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Myeloid-derived suppressor cells (MDSCs) are major regulators of immune responses in cancer. Both C/EBP homologous protein (CHOP) and C/EBP beta play a critical role in regulating immunosuppressive function of MDSCs. In this study, we identified a novel long noncoding RNA termed as lnc-chop in MDSCs, which may interact with CHOP and the C/EBP beta isoform liver-enriched inhibitory protein. The binding of lnc-chop with both CHOP and the C/EBP beta isoform liver-enriched inhibitory protein promoted the activation of C/EBP beta and upregulated the expression of arginase-1, NO synthase 2, NADPH oxidase 2, and cyclooxygenase-2, which are related to the immunosuppressive function of MDSCs in inflammatory and tumor environments. Additionally, lnc-chop also promoted the enrichment of H3K4me3 on the promoter region of arginase-1, NO synthase 2, NADPH oxidase 2, and cyclooxygenase-2. These findings suggest an important role of lnc-chop in controlling immunosuppressive function of MDSCs in the tumor environment.
引用
收藏
页码:2603 / 2614
页数:12
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