IRF8: Mechanism of Action and Health Implications.

IRF8: Mechanism of Action and Health Implications.
复制标题

IRF8:作用机制和健康影响。

DOI:
10.3390/cells11172630
复制
发表时间:
2022-08-24
期刊:
影响因子:
6
通讯作者:
--
中科院分区:
生物学2区
文献类型:
--
作者:

文献摘要

参考文献

相似文献

干扰素调节因子 8 (IRF8) 是 IRF 蛋白家族的转录因子。 IRF8 最初被确定为骨髓细胞谱系定型和分化的重要因子。 Irf8 的缺失导致 CD11b+Gr1+ 未成熟骨髓细胞 (IMC) 的大量积累,特别是 CD11b+Ly6Chi/+Ly6G− 多形核骨髓源性抑制细胞样细胞 (PMN-MDSC)。在癌症等病理条件下,Irf8 因其启动子 DNA 高甲基化而被沉默,导致小鼠体内 PMN-MDSC 和 CD11b+ Ly6G+Ly6Clo 单核细胞 MDSC (M-MDSC) 积聚。 IRF8 在人类癌症患者的 MDSC 中经常被沉默。 MDSC 是免疫抑制细胞的异质群体,可抑制 T 细胞和 NK 细胞活性,促进肿瘤免疫逃避,并产生生长因子以发挥直接的促肿瘤活性。新的实验数据表明 IRF8 也在非造血细胞中表达。上皮细胞表达的 IRF8 调节细胞凋亡并抑制骨桥蛋白 (OPN)。人类肿瘤细胞可能利用 IRF8 启动子 DNA 甲基化作为抑制 IRF8 表达的机制,通过获得细胞凋亡抵抗和 OPN 上调来促进癌症发展。升高的 OPN 会与 CD44 结合,抑制 T 细胞活化并促进肿瘤细胞干性,从而促进癌症的发展。因此,IRF8 是一种转录因子,可调节人类健康和疾病中的免疫和非免疫成分。
Interferon regulatory factor 8 (IRF8) is a transcription factor of the IRF protein family. IRF8 was originally identified as an essentialfactor for myeloid cell lineage commitment and differentiation. Deletion of Irf8 leads to massive accumulation of CD11b+Gr1+ immature myeloid cells (IMCs), particularly the CD11b+Ly6Chi/+Ly6G− polymorphonuclear myeloid-derived suppressor cell-like cells (PMN-MDSCs). Under pathological conditions such as cancer, Irf8 is silenced by its promoter DNA hypermethylation, resulting in accumulation of PMN-MDSCs and CD11b+ Ly6G+Ly6Clo monocytic MDSCs (M-MDSCs) in mice. IRF8 is often silenced in MDSCs in human cancer patients. MDSCs are heterogeneous populations of immune suppressive cells that suppress T and NK cell activity to promote tumor immune evasion and produce growth factors to exert direct tumor-promoting activity. Emerging experimental data reveals that IRF8 is also expressed in non-hematopoietic cells. Epithelial cell-expressed IRF8 regulates apoptosis and represses Osteopontin (OPN). Human tumor cells may use the IRF8 promoter DNA methylation as a mechanism to repress IRF8 expression to advance cancer through acquiring apoptosis resistance and OPN up-regulation. Elevated OPN engages CD44 to suppress T cell activation and promote tumor cell stemness to advance cancer. IRF8 thus is a transcription factor that regulates both the immune and non-immune components in human health and diseases.
DOI: 10.1093/emboj/18.4.977
发表时间: 1999-02-15
期刊: EMBO JOURNAL
影响因子: 11.4
作者:
Brass, AL;Zhu, AQ;Singh, H
通讯作者: Singh, H
DOI: 10.4049/jimmunol.1001950
发表时间: 2011-02-01
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Feng J;Wang H;Shin DM;Masiuk M;Qi CF;Morse HC 3rd
通讯作者: Morse HC 3rd
DOI: 10.1073/pnas.87.10.3743
发表时间: 1990-05-01
影响因子: 11.1
作者:
DRIGGERS, PH;ENNIST, DL;OZATO, K
通讯作者: OZATO, K
DOI: 10.1016/j.meegid.2021.105121
发表时间: 2021-10-20
影响因子: 3.2
作者:
Dang, Dan;Liu, Ying;Wu, Hui
通讯作者: Wu, Hui
DOI: 10.1111/j.1365-3083.2006.01827.x
发表时间: 2006-09-01
影响因子: 3.7
作者:
Dimberg, A.;Karehed, K.;Oberg, F.
通讯作者: Oberg, F.