内源性逆转录病毒调节免疫转录调节器SP140的瘤特异性表达
Adam K Dziulko1, Holly Allen1, Edward B Chuong1
1Department of Molecular, Cellular, and Developmental Biology and BioFrontiers Institute, University of Colorado Boulder, 3415 Colorado Ave, JSC Biotech Bldg, Boulder, Colorado 80303, USA.
Human molecular genetics
|May 16, 2024
概括
斑点蛋白140 (SP140) 通常存在于免疫细胞中,但我们在癌症中发现了它. 这种特定于癌症的SP140表达是由内源逆转录病毒 (ERV) 驱动的,并影响免疫基因调节.
科学领域:
- 基因组学就是基因组学.
- 免疫学 免疫学 免疫学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 斑点蛋白140 (SP140) 是一种对免疫细胞基因调节至关重要的染色体读者.
- SP140变种与克罗恩病和白血病等免疫疾病有关.
- 据信,SP140的表达仅限于免疫细胞.
研究的目的:
- 为了研究SP140在免疫细胞之外的表达模式.
- 为了确定驱动癌症中SP140表达的新机制.
- 探索癌症特异性SP140在细胞过程中的功能后果.
主要方法:
- 在多种正常和癌细胞类型中分析人类转录基因数据集.
- 识别和描述替代性内基促进剂.
- 功能性研究涉及纤维瘤细胞系中的基因沉默.
主要成果:
- 在各种癌细胞中发现了SP140的复发性,癌症特异性表达.
- 这种异常表达是由LTR8B家族的一种灵长类特异性内源逆转录病毒 (ERV) 的内源促进体驱动的.
- 该ERV促进体由线粒激活蛋白激酶 (MAPK) 信号调节,产生癌症特异性SP140异型.
- 抑制纤维瘤细胞中的ERV促进体增加了对干扰素的敏感性和失调的免疫基因.
结论:
- 异常的是,ERV介导的SP140表达是癌症中一种新的机制.
- 这一途径有助于多种癌症类型的免疫基因失调.
- SP140的作用超越了免疫力,通过ERV激活将其与癌症生物学有关.
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