LncRNA Snhg6 regulates the differentiation of MDSCs by regulating the ubiquitination of EZH2

被引:39
作者
Lu, Wei [1 ,2 ]
Cao, Fenghua [3 ]
Feng, Lili [1 ]
Song, Ge [1 ]
Chang, Yi [1 ]
Chu, Ying [1 ]
Chen, Zhihong [4 ]
Shen, Bo [5 ,6 ]
Xu, Huaxi [1 ]
Wang, Shengjun [1 ]
Ma, Jie [1 ]
机构
[1] Jiangsu Univ, Sch Med, Dept Immunol, Jiangsu Key Lab Lab Med, Zhenjiang 212013, Jiangsu, Peoples R China
[2] Huazhong Univ Sci & Technol, Tongji Med Coll, Liyuan Hosp, Dept Lab Med, Huazhong, Hubei, Peoples R China
[3] Zhenjiang Hosp Tradit Chinese & Western Med, Zhenjiang 212000, Jiangsu, Peoples R China
[4] Jiangsu Univ, Zhenjiang Peoples Hosp 1, Renmin Hosp, Dept Gastrointestinal Surg, Zhenjiang 212002, Jiangsu, Peoples R China
[5] Nanjing Med Univ, Canc Hosp, Jiangsu Canc Hosp, Nanjing 210009, Peoples R China
[6] Jiangsu Inst Canc Res, Nanjing 210009, Peoples R China
关键词
MDSCs; lncRNA Snhg6; EZH2; ubiquitination; Differentiation;
D O I
10.1186/s13045-021-01212-0
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Myeloid-derived suppressor cells (MDSCs) are derived from bone marrow progenitor cells commonly, which is a heterogeneous cell group composed of immature granulocytes, dendritic cells, macrophages and early undifferentiated bone marrow precursor cells. Its differentiation and immunosuppressive function are regulated by complex network signals, but the specific regulation mechanisms are not yet fully understood. In this study, we found that in mouse of Lewis lung cancer xenograft, long non-coding RNA Snhg6 (lncRNA Snhg6) was highly expressed in tumor-derived MDSCs compared with spleen-derived MDSCs. LncRNA Snhg6 facilitated the differentiation of CD11b(+) Ly6G(-) Ly6C(high) monocytic MDSCs (Mo-MDSCs) rather than CD11b(+) Ly6G(+) Ly6C(low) polymorphonuclear MDSCs (PMN-MDSCs), but did not affect the immunosuppressive function of MDSCs. Notably, lncRNA Snhg6 could inhibit the expression of EZH2 by ubiquitination pathway at protein level rather than mRNA level during the differentiation of mouse bone marrow cells into MDSCs in vitro. EZH2 may be an important factor in the regulation of lncRNA Snhg6 to promote the differentiation of Mo-MDSCs. So what we found may provide new ideas and targets for anti-tumor immunotherapy targeting MDSCs.
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页数:4
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