相关实验视频

Updated: Jan 18, 2026

Bone Marrow Transplantation Procedures in Mice to Study Clonal Hematopoiesis

Bone Marrow Transplantation Procedures in Mice to Study Clonal Hematopoiesis

Published on: May 26, 2021

作为心房动的危险因素,未确定潜力的克隆性血液形成:通过孟德尔随机化研究证明因果关系

Qing Zhang¹, Guohao Wang², Zhangpu Yan³

¹Department of Cardiology, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China.

Heart rhythm O2

|January 16, 2026

概括

不确定潜力的克隆性血液形成 (CHIP) 因果上增加了心房 (AF) 的风险,特别是在DNMT3a突变的情况下. 压缩性血压升高调解了这种联系,但AF不会导致CHIP.

科学领域:

遗传学是一个遗传学.
心脏病学心脏病学
血液学血液学血液学

背景情况:

不确定潜力的克隆性血液形成 (CHIP) 是一种新兴的心血管风险因素.
已经观察到CHIP和心房动 (AF) 之间的潜在联系,但因果关系仍然不确定.
在这种关系中,DNMT3a和TET2突变的具体作用需要澄清.

研究的目的:

调查CHIP和AF之间的因果关系.
探索潜在的调解途径,包括遗传因素和中间风险因素.
为了确定AF是否可以因果关系地影响CHIP的发展.

主要方法:

使用大规模的全基因组关联研究数据进行双向门德尔随机化 (MR) 分析.
分析包括来自英国生物银行的CHIP数据和来自FinnGen的AF数据以及其他队列的数据.
用两步的MR调解分析来确定中间风险因素.

主要成果:

发现CHIP因果上增加了AF风险 (OR 1.057,P = .001),DNMT3a (OR 1.048,P = 4.56 × 10^-4) 和TET2 (OR 1.038,P = .025) 突变显示了类似的效果.
反向MR分析没有发现AF导致CHIP的证据.
较高的缩血压被确定为DNMT3a-CHIP到AF通路中的显著调解者,解释了7.8%的效果 (P = .034).

结论:

CHIP,特别是与DNMT3a相关的突变,因果上会增加AF风险,尽管很小.
这项研究提供了基因证据,支持CHIP与AF的因果关系.
压缩性血压升高是连接DNMT3a-CHIP与AF的关键媒介,突出了潜在的治疗标.

关键词:

心房动是一种心房动.不确定潜力的克隆性血液形成 (CHIP)在 DNMT3a-CHIP 中使用.在高血压的高血压.系统性血压是静脉压的表现.这就是TET2-CHIP.

更多相关视频

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

Published on: July 20, 2022

Lentiviral CRISPR/Cas9-Mediated Genome Editing for the Study of Hematopoietic Cells in Disease Models

Lentiviral CRISPR/Cas9-Mediated Genome Editing for the Study of Hematopoietic Cells in Disease Models

Published on: October 3, 2019

相关概念视频

Multipotency of Hematopoietic Stem Cells

Multipotency of Hematopoietic Stem Cells

The hematopoietic stem cells or HSCs are multipotent, meaning they can differentiate and give rise to all blood and immune cells. HSCs are maintained in the quiescent stage until an external stimulus initiates their differentiation. The multipotent HSCs exist as two heterogeneous populations, long-term repopulating cells (LTRC) and short-term repopulating cells (STRC). The two HSC populations have different surface markers or receptors and are classified based on quiescence and long-term...

Hematopoiesis

Hematopoiesis

The process of blood cell formation is called hematopoiesis. Hematopoiesis starts early during development, on the seventh day of embryogenesis. This phase of hematopoiesis is called the primitive wave, wherein the extraembryonic yolk sac allows the production of erythroid cells and endothelial cells from a common precursor called hemangioblast. The erythroid cells provide oxygen to support the growth of the rapidly dividing embryo. Hemangioblasts later develop into hematopoietic stem cells or...

Lineage Commitment

Lineage Commitment

Commitment is the process whereby stem cells:

Intracellular Signaling Affects Focal Adhesions

Intracellular Signaling Affects Focal Adhesions

Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...