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在多发性骨髓瘤中,DOT1L抑制重新编程先天免疫力,以增强免疫调节药物反应的潜力

Kazuya Ishiguro¹, Hiroshi Kitajima², Takeshi Niinuma²

¹Division of Molecular Biology, Department of Biochemistry, Sapporo Medical University School of Medicine, Sapporo, Japan, S1, W17, Chuo-ku, Sapporo, 060-8556, Japan; Division of Gastroenterology and Hepatology, Department of Internal Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan, S1, W16, Chuo-ku, Sapporo, 060-8556, Japan; Department of Hematology, Tenshi hospital, Sapporo, Japan 1-1, N12, E3, Higashi-ku, Sapporo, 065-8611, Japan.

|July 23, 2025

概括

在多发性骨髓瘤 (MM) 中,DOT1L抑制通过激活先天性免疫反应并增强莱纳利多米德的疗效,显示出有前途. 这种表观遗传方法针对MM细胞的存活率,并提高了当前治疗的有效性.

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.
免疫学免疫学免疫学
在瘤学瘤学.

背景情况:

像莱纳利多米德这样的免疫调节药物 (IMiD) 是多发性骨髓瘤 (MM) 治疗的关键,但具有局限性.
DOT1L (海斯H3 lysine 79甲基转移酶) 抑制以前通过调节干扰素调节基因 (IRG) 的上调显示了抗MM效应.

研究的目的:

调查MM中DOT1L的表观遗传依赖性.
阐明DOT1L抑制诱导的先天性免疫信号传递的机制.

主要方法:

对表观遗传调节器依赖的DepMap门户数据分析.
通过CRISPR/Cas9介导的STING1.1的淘汰.
对基因表达变化的分析 (IFN,HLAII类,IKZF1/3,IRF4,MYC).

主要成果:

毫米细胞表现出对DOT1L的优先依赖,以求生存.
抑制DOT1L激活I型IFN反应,上调HLAII类基因,并诱导DNA损伤反应.
激活STING1有助于抗MM活性;DOT1L抑制降低IKZF1/3和IRF4,增强IRG诱导.
DOT1L抑制与莱纳利多米德协同作用,进一步调节IRG并抑制IRF4-MYC信号传输.

结论:

DOT1L是MM中首选的表观遗传治疗标.
抑制DOT1L激活了先天的免疫信号通路.
DOT1L抑制增强了莱纳利多米德在MM的治疗疗效.

关键词:

表观遗传学在表观遗传学中,表观遗传学是指表观遗传学.免疫调节药物免疫调节药物天生的免疫信号传递.多发性骨髓瘤是一种多发性骨髓瘤.

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