相关实验视频

Updated: Jan 16, 2026

Engineering Oncogenic Heterozygous Gain-of-Function Mutations in Human Hematopoietic Stem and Progenitor Cells

Engineering Oncogenic Heterozygous Gain-of-Function Mutations in Human Hematopoietic Stem and Progenitor Cells

Published on: March 10, 2023

对BCL11A调控元素进行多重基编辑,以治疗状细胞病

Letizia Fontana¹, Pierre Martinucci¹, Simone Amistadi¹

¹Université Paris Cité, Imagine Institute, Laboratory of Chromatin and Gene Regulation During Development, INSERM UMR 1163, 75015 Paris, France.

Cell reports. Medicine

|September 27, 2025

概括

基础编辑通过增加胎儿血红蛋白 (HbF) 水平提供了一种更安全,更有效的方法来治疗状细胞疾病 (SCD). 这种新的方法在干细胞中重新激活HbF,减少SCD的严重程度,而不会造成有害的DNA断裂.

科学领域:

遗传学遗传学是一个
分子生物学分子生物学
血液学血液学血液学

背景情况:

状细胞疾病 (SCD) 是一种遗传性疾病,其特征是异常的成年血红蛋白.
已知在成年期胎儿血红蛋白 (HbF) 水平升高可以改善SCD的严重程度.
目前的CRISPR-Cas9疗法旨在通过向BCL11A抑制剂来增加HbF,但具有双链断裂 (DSB) 等风险.

研究的目的:

开发一种更安全,更有效的基因编辑策略,以增加状细胞疾病中的HbF水平.
为了研究使用基编辑来准BCL11A增强剂而不会诱导DSBs.
为了比较基编辑与CRISPR-Cas9对血造干细胞/原生细胞 (HSPCs) HbF再激活的疗效.

主要方法:

利用多重基编辑来准BCL11A基因的+58-kb和+55-kb增强剂中的特定DNA基因.
在这些增强剂内剖析的关键核酸被转录激活剂识别.
评估了基调编辑在破坏目标部位和在长期重新填充HSPC和体内活体中重新激活HbF的效率.

主要成果:

多重基编辑成功地破坏了BCL11A增强剂中的关键DNA动机,导致了强大的HbF重新激活.
通过基编辑获得的HbF水平超过了通过CRISPR-Cas9编辑获得的水平.
基准编辑策略将DSB和基因组重组最小化,与CRISPR-Cas9.9相比提高了安全性.
在HSPC和体内观察到有效和持久的HbF重新激活.

结论:

对BCL11A增强剂的多重基编辑是一种安全且高效的策略,用于治疗状细胞疾病.
这种方法为CRISPR-Cas9提供了一个有希望的替代方案,通过最大限度地提高治疗HbF诱导的同时,最大限度地减少基因毒性.
基础编辑是SCD患者的持久和有效的治疗方式.

关键词:

在BCL11A中.基础编辑基础编辑这是胎儿血红蛋白.基因编辑基因编辑造血干细胞造血干细胞状细胞疾病是一种状细胞疾病.

更多相关视频

Genome Editing and Directed Differentiation of hPSCs for Interrogating Lineage Determinants in Human Pancreatic Development

Genome Editing and Directed Differentiation of hPSCs for Interrogating Lineage Determinants in Human Pancreatic Development

Published on: March 5, 2017

CRISPR/Cas9 Gene Editing of Hematopoietic Stem and Progenitor Cells for Gene Therapy Applications

CRISPR/Cas9 Gene Editing of Hematopoietic Stem and Progenitor Cells for Gene Therapy Applications

Published on: August 9, 2022

相关概念视频

iPS Cell Differentiation

iPS Cell Differentiation

The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.

Multiple Allele Traits

Multiple Allele Traits

The Concept of Multiple Allelism

CRISPR

CRISPR

Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced...