对WT1突变的器官模拟揭示了底层细胞发育的关键调控路径
Gang Wang1, Hangdi Wu2, Xiuwen Zhai1
1National Clinical Research Center of Kidney Diseases, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu, 210002, China.
概括
威尔姆斯瘤-1 (WT1) 对于脏细胞发育至关重要. 这项研究绘制了WT1的表观基因组作用,揭示了WT1突变如何损害Podocyte形成和结构,基因编辑可以纠正.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學.
- 发展生物学 发展生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 威尔姆斯瘤-1 (WT1) 对于脏细胞发育至关重要.
- 在细胞发育过程中,WT1的精确表观基因组机制需要进一步阐明.
研究的目的:
- 在人类脏发育过程中绘制WT1单细胞表观基因格局的地图.
- 研究WT1突变对细胞发育和结构的功能后果.
- 探索基因编辑对WT1相关脏疾病的治疗潜力.
主要方法:
- 从胎儿脏和脏器官生成单细胞染色质可访问性和基因表达图.
- 从带有WT1突变的诱导多能干细胞 (iPSC) 中产生患者衍生的器官.
- 单细胞RNA测序 (scRNA-seq) 和功能分析的应用.
- 通过CRISPR-Cas9基因编辑,纠正患者iPSC中的WT1突变.
主要成果:
- 确定关键的WT1向基因 (例如,BMPER/PAX2/MAGI2,MYH9,NPHS1),这些基因对细胞的发育和结构完整性至关重要.
- 证明WT1突变延迟了小细胞的发育,并通过未能激活必要的基因而导致结构损伤.
- 证实CRISPR-Cas9对患者iPSCs中WT1突变的纠正能挽救细胞表型.
结论:
- 这项研究阐明了WT1相关的表观基因组景观在人类 podocyte 发育.
- 确定为致病的WT1突变,导致受体细胞发育和结构受损.
- 基因编辑为WT1相关脏疾病提供了潜在的治疗策略.
相关概念视频
01:45Kidney Structure
The kidneys are two large bean-shaped organs located in the upper abdomen. They filter the blood several times a day to remove toxins and rebalance water and electrolytes of the circulatory system via the renal veins. The kidneys receive blood directly from the heart via the renal arteries. These arteries enter the kidney at the hilum, the concave surface of the bean, where they branch and divide into smaller vessels and capillaries.
02:54Canonical Wnt Signaling Pathway
The gene encoding the main signaling molecules of the Wnt signaling pathways (the Wnt proteins) was discovered almost four decades ago by Nüsslein-Volhard and Wieschaus. They identified and originally named the gene "wingless" (wg) after a phenotype discovered during their landmark genetic screen in Drosophila for body pattern defects. At around the same time, another researcher named Harold Varmus found that a murine tumor virus activates the mammalian wg homolog, Int-1, which results in tumor...
01:41Non-Canonical Wnt Signaling Pathways
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01:21External Anatomy of the Kidney
The kidneys are a pair of bean-shaped organs in the human body that play a critical role in maintaining overall health. They filter out waste products from the blood, regulate blood pressure, maintain electrolyte balance, and stimulate the production of red blood cells.
The kidneys are located in the retroperitoneal space on either side of the vertebral column, protected posteriorly by the 11th and 12th ribs. The right kidney sits slightly lower than the left owing to the presence of the liver...
The kidneys are located in the retroperitoneal space on either side of the vertebral column, protected posteriorly by the 11th and 12th ribs. The right kidney sits slightly lower than the left owing to the presence of the liver...
01:12Internal Anatomy of the Kidney
The kidneys are essential organs in the human body, performing a myriad of tasks that maintain homeostasis and overall health.
Anatomical Position and Dimensions
The kidneys are retroperitoneal organs positioned against the posterior abdominal wall on either side of the spine, roughly between the twelfth thoracic and third lumbar vertebrae. Each kidney is typically 10-12 cm long, 5-6 cm wide, and 3-4 cm thick, weighing about 150 grams.
Renal Cortex
The outermost region of the kidney is the...
Anatomical Position and Dimensions
The kidneys are retroperitoneal organs positioned against the posterior abdominal wall on either side of the spine, roughly between the twelfth thoracic and third lumbar vertebrae. Each kidney is typically 10-12 cm long, 5-6 cm wide, and 3-4 cm thick, weighing about 150 grams.
Renal Cortex
The outermost region of the kidney is the...