针对性的DNA脱甲基化:载体,效应者和前景
Naohiro Yano1, Alexey V Fedulov1
1Department of Surgery, Rhode Island Hospital, Alpert Medical School of Brown University, 593 Eddy Street, Providence, RI 02903, USA.
Biomedicines
|May 27, 2023
概括
异常的DNA高甲基化驱动各种疾病. 基因特异性DNA脱甲基化提供了一个精确的表观遗传编辑策略来重新激活被沉默的基因,这可能导致针对特定表观突变的新型治疗方法.
科学领域:
- 表观遗传学和分子生物学
- 基因组医学是基因组医学.
- 基因治疗 基因治疗
背景情况:
- 异常的DNA超甲基化与许多疾病有关,包括癌症和心血管,神经和自身免疫疾病.
- 目前的全基因组DNA脱甲基化方法不足以治疗具有特定表皮突变的疾病.
- 基因特异性表观遗传编辑对于重新激活沉默的基因和理解表观遗传改变至关重要.
研究的目的:
- 审查目前和潜在的基因特异性DNA脱甲基化策略.
- 突出表观遗传编辑作为治疗方法的潜力.
- 讨论该领域的挑战和未来方向.
主要方法:
- 使用依赖序列的DNA结合分子,如指蛋白阵列 (ZFA),转录激活器样效应器 (TALE) 和CRISPR/dCas9.
- 通过将DNA结合域与DNA脱甲基酶融合合成蛋白质 (例如,十-十一转位 (Tet),丁氨酸DNA糖酶 (TDG)).
- 评估在目标位置上诱导或增强转录反应能力.
主要成果:
- 合成蛋白质成功诱导了特定位点的DNA脱甲基化和转录激活.
- 证明了针对特定基因进行表观遗传修饰的可行性.
- 确定了诸如对构造交付转基因的需求等挑战.
结论:
- 通过表观遗传编辑进行基因特异性DNA脱甲基化是一种有前途的治疗策略.
- 这种方法允许精确地准表皮突变,与全基因组方法不同.
- 需要进一步的研究来克服传递挑战,并优化治疗应用.
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