1949年长跨基因非蛋白编码RNA通过H3K27me3介导的ONECUT2沉默抑制分散型大B细胞淋巴瘤中的rituximab耐药性
Shusen Lin1, Shenrong Mo1, Hongyao Chen1
1Hematology and Oncology Department, No. 924 Hospital of PLA Joint Logistic Support Force Guilin, Guangxi, China.
American journal of translational research
|October 20, 2025
概括
长非编码RNA LINC01949通过表观遗传沉默ONECUT2.2,抑制扩散性大B细胞淋巴瘤 (DLBCL) 中的瑞图西马布耐药性. 恢复LINC01949可以克服药物耐药性.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 分子生物学分子生物学
- 在瘤学瘤学.
背景情况:
- 扩散性大B细胞淋巴瘤 (DLBCL) 通常会对rituximab治疗产生抗性.
- 长非编码RNAs (lncRNAs) 越来越多地被认为是它们在癌症进展和药物反应中的作用.
- 了解药物耐药性的表观遗传调节对于开发有效治疗方法至关重要.
研究的目的:
- 阐明lncRNA LINC01949在DLBCL中调解rituximab敏感性的功能.
- 为了研究LINC01949通过哪些表观遗传机制影响Rituximab耐药性.
- 确定潜在的治疗点,以克服DLBCL.Lituximab的耐药性.
主要方法:
- 在使用公共数据集对Rituximab敏感和耐药DLBCL细胞系LINC01949表达的分析.
- 功能性研究涉及LINC01949敲击和过度表达,以评估药物反应和亡.
- 对H3K27me3修饰,ONECUT2表达和EZH2结合的机制研究.
- 使用H3K27me3脱甲基化和ONECUT2.2.的药理抑制剂的救援实验.
主要成果:
- LINC01949的表达在抗瑞图西马布的DLBCL细胞中显著降低.
- LINC01949 Knockdown 诱导了对Rituximab 的耐药性,而其过度表达则恢复了敏感性.
- LINC01949下调导致减少H3K27me3,抑制了瘤转录因子ONECUT2.2.
- 针对H3K27me3或ONECUT2的药理干预措施逆转了rituximab的耐药性.
结论:
- LINC01949通过促进ONECUT2的H3K27me3-依赖性沉默,从而抑制DLBCL中的瑞图西马布耐药性,作为瘤抑制剂.
- LINC01949-H3K27me3-ONECUT2轴代表了DLBCL耐药性的关键表观遗传路径.
- 针对这种途径提供了一种有希望的策略,以增强DLBCL患者的Rituximab疗效.
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