DNMT3Aの生殖系および体内変異および未定の潜在遺伝子の他のクローン性血液形成は,肺動脈高血圧に寄与する
Ruaa Al-Qazazi1, Isaac M Emon1, François Potus2
1Department of Medicine, Queen's University, Biosciences Complex Room 1520, 116 Barrie Street, Kingston, Ontario, Canada K7L 3N6.
European heart journal
|August 29, 2025
まとめ
DNMT3AとCHIP遺伝子の生殖系と体内の変異は,肺動脈高血圧 (PAH) のリスクの増加と関連しています. これらの遺伝要因は炎症を促進し,PAHの治療標的として機能する.
科学分野:
- 遺伝学
- 心血管医学
- 免疫学
背景:
- 肺動脈高血圧 (PAH) は遺伝的関連性があるが,結合組織疾患 (APAH-CTD) と関連する遺伝的マーカーは存在しない.
- PAHの病原性における不定ポテンシャル (CHIP) 遺伝子のクローナル血液形成における体内変異の役割は十分に理解されていません.
研究 の 目的:
- DNMT3Aおよび他のCHIP遺伝子における生殖系と体内の変異のPAHとの関連を調査する.
- APAH-CTDを含むPAHのバイオマーカーおよび治療標的としてのこれらの変種の可能性を評価する.
主な方法:
- PAH患者および対照群の生殖線および体内の変異を分析するために,エクソーム配列化および標的パネル配列化が使用されました.
- DNMT3A mRNAの発現は,PAH患者および対照群の周辺血液単核細胞 (PBMC) で測定されました.
- PAHの発達と治療介入の評価のために,血液生成のDnmt3aノックアウトのマウスモデルが使用されました.
主要な成果:
- ゲルムラインと体内のDNMT3A変異は,対照群と比較してPAH患者で有意に増加した.
- DNMT3Aを含むCHIP変種は,PAHリスクと強く関連していました.
- 炎症性PAHを誘発したマウスの遺伝子操作が観察されました.
結論:
- DNMT3AとCHIP遺伝子の生殖系と体内の変異は,APAH-CTDを含むPAHの危険因子である.
- これらの遺伝的変異は炎症を通してPAHの病原化に寄与する.
- DNMT3AとCHIPの変種は,肺動脈高血圧の潜在的なバイオマーカーであり,治療目標です.
関連する概念動画
Pulmonary Hypertension: Classification and Pathogenesis
284
Pulmonary hypertension (PH) is a severe health condition in which the mean pulmonary arterial pressure increases to 25 mmHg or more, even when the body is at rest. This high pressure in the blood vessels that transport blood from the heart to the lungs can cause various symptoms, including shortness of breath, can lead to right heart failure, and significantly affect the overall quality of life.
There are various classifications for PH, each relating to different underlying causes and also...
There are various classifications for PH, each relating to different underlying causes and also...
284
Comparing Copy Number Variations and SNPs
17.9K
Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
17.9K
Genome-wide Association Studies-GWAS
14.1K
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
14.1K
Cancers Originate from Somatic Mutations in a Single Cell
12.7K
Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
12.7K
Abnormal Proliferation
4.6K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.6K
Hematopoiesis
5.6K
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...
5.6K


