在患有状细胞疾病的儿童中,克隆性血液形成的患病率增加
Jessica Ulloa1, Kristin Wuichet2, Sara R Rashkin3
1Vanderbilt University, Nashville, Tennessee, United States.
Blood
|December 8, 2025
概括
与健康儿童相比,患有状细胞疾病 (SCD) 的儿童表现出克隆性血液形成 (CH) 的患病率显著更高. 这一发现表明SCD的早期遗传变化,独立于氨酸尿素治疗.
科学领域:
- 血液学 血液学 血液学
- 遗传学 是一个遗传学.
- 儿科 儿科 儿科
背景情况:
- 克隆性血液形成 (CH) 通常与年龄有关,但其在儿科状细胞疾病 (SCD) 中的作用尚不清楚.
- 之前对SCD中CH的研究已经产生了相互矛盾的结果.
- 在SCD中了解生命早期的CH可能会为与疾病相关的压力因素和突变发生提供见解.
研究的目的:
- 为了确定患有SCD的儿童与年龄,性别和种族匹配的对照相比,CH的患病率是否更高.
- 调查基尿素治疗是否会影响SCD儿童的CH患病率.
主要方法:
- 对两个独立的儿科SCD队列 (n=1,025和n=1,293) 和一个匹配的比较组 (n=2,957) 的横截面研究.
- 使用敏感的,经过错误校正的测序试验来检测CH在变异性基因频率≥0.5%时.
- 分析了与SCD状态和氧尿素暴露有关的CH患病率.
主要成果:
- 与对照组相比,患有SCD的儿童的CH患病率明显高 (OR=4.2,p=7.4x10-13).
- 在患有SCD (OR=0.76,p=0.44) 的儿童中,CH的患病率与基尿素治疗无关.
结论:
- 儿科状细胞疾病与克隆性血液形成的患病率增加有关.
- 基尿素治疗似乎不会影响这种儿科SCD人群中CH的流行率.
- 这些发现凸显了SCD中早期生命中的潜在遗传变化.
相关概念视频
Overview of Hematopoiesis
8.2K
Hematopoiesis, or blood cell production, is a vital biological process that begins early in embryonic development and continues throughout life. This process generates the various types of cells found in blood, including red blood cells, white blood cells, and platelets from hematopoietic stem cells (HSCs).
Developmental Phases of Hematopoiesis
Initially, HSCs are formed in the embryonic yolk sac, a critical site for early blood cell production. These stem cells subsequently migrate to other...
Developmental Phases of Hematopoiesis
Initially, HSCs are formed in the embryonic yolk sac, a critical site for early blood cell production. These stem cells subsequently migrate to other...
8.2K
Hematopoiesis
8.5K
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...
8.5K
Multipotency of Hematopoietic Stem Cells
3.8K
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...
3.8K
Bone Marrow Sampling and Transplants
829
Bone marrow transplant is a potential cure for several diseases, including cancer and specific genetic disorders. Notably, this procedure is applicable for patients suffering from aplastic anemia, certain types of leukemia, severe combined immunodeficiency disease (SCID), Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, thalassemia, sickle-cell disease, and certain cancers.
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy...
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy...
829
Regulation of Hematopoietic Stem Cells
3.9K
All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
3.9K
Disorders of Erythrocytes
2.0K
Disorders of erythrocytes, or red blood cells (RBCs), include a range of conditions affecting their number, shape, or function.
Erythrocyte disorders can be broadly categorized into two main types: anemic and polycythemic conditions.
A low oxygen-carrying capacity of the blood due to the loss, lower production, or destruction of erythrocytes is termed anemia. Hemorrhagic anemia, for example, occurs when bleeding from an external wound or internal ulcer reduces erythrocyte counts.
On the other...
Erythrocyte disorders can be broadly categorized into two main types: anemic and polycythemic conditions.
A low oxygen-carrying capacity of the blood due to the loss, lower production, or destruction of erythrocytes is termed anemia. Hemorrhagic anemia, for example, occurs when bleeding from an external wound or internal ulcer reduces erythrocyte counts.
On the other...
2.0K


