通过KDM6A对CD38/CD48的表观遗传调节调解了多发性髓瘤中NK细胞的反应
Jiye Liu1, Lijie Xing2, Jiang Li3
1Jerome Lipper Multiple Myeloma Center, Lebow Institute for Myeloma Therapeutics, Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, 02215, USA.
Nature communications
|February 14, 2024
概括
在多发性骨髓瘤中,KDM6A的损失会通过降低CD38.8的调节,导致对达拉图马布治疗的耐药性. EZH2 抑制剂可以恢复敏感性,为多发性骨髓瘤患者提供新的治疗策略.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 遗传学 是一个遗传学.
背景情况:
- 抗CD38单克隆抗体,如Daratumumab,在治疗多发性骨髓瘤 (MM) 中至关重要.
- 获得对达拉图穆马布治疗耐药性的机制尚不完全理解.
- 识别耐药性途径对于改善MM患者的治疗结果至关重要.
研究的目的:
- 在多发性骨髓瘤中识别抗体依赖细胞毒性 (ADCC) 对达拉图穆马布介导抗性的遗传调节者.
- 阐明达拉图穆马布耐药性背后的分子机制.
- 探索潜在的治疗策略,以克服达拉图穆马布耐药性.
主要方法:
- 利用两个全基因组的CRISPR屏幕在体外识别给达拉图马布产生耐药性的基因.
- 研究KDM6A在调节CD38表达和对达拉图穆马布介导ADCC的敏感性方面的作用.
- 评估了H3K27me3水平和EZH2抑制对CD38和CD48表达和达拉图穆马布敏感性的影响.
主要成果:
- 已确定KDM6A的损失是达拉图穆马布耐药性的关键因素.
- KDM6A损失导致H3K27me3增加,降低CD38表达的调节,并减少达拉图穆马布介导的ADCC.
- 在KDM6A损失后CD48的下调也会导致抗性;EZH2抑制通过上调CD38和CD48.8来恢复敏感性.
结论:
- 失去KDM6A代表了多发性骨髓瘤中达拉图穆马布耐药性的新机制.
- 通过EZH2抑制向H3K27me3脱甲基化可以恢复对达拉图姆的敏感性.
- EZH2 抑制剂是一种有前途的治疗方法,可以提高MM患者的达拉图穆马布疗效.
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