同一个异合体Col4A4突变在中国家庭成员中引发了不同的病理变化
Fengming Zhu1, Yueqiang Li1, Yuxi Wang1
1Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Frontiers in genetics
|June 16, 2023
概括
在一个患有遗传性炎的中国家庭中,发现了COL4A4基因和TNXB基因共同突变的新奇突变. 这些遗传变异导致了家庭成员之间不同的临床和病理结果,突出显示了遗传和病理检测的重要性.
科学领域:
- 遗传学 是一个遗传学.
- 腎臟病學 (nephrology) 是一種醫學專業.
- 分子生物学分子生物学
背景情况:
- 原基因 (COL4A3,COL4A4,COL4A5) 的突变与遗传性淋巴结膜炎有关,例如薄底膜脏病和阿尔波特综合征.
- 其他形式的淋巴结膜炎的遗传基础在很大程度上是未知的.
- 这项研究调查了一家患有遗传性炎的中国家庭,以揭示潜在的遗传突变.
研究的目的:
- 在一个中国家庭中识别导致遗传性炎的遗传突变.
- 研究遗传性病中基因型和表型之间的关系.
- 强调综合遗传和病理诊断的重要性.
主要方法:
- 来自家庭成员的DNA的遗传测序 (包括桑格测序).
- 受影响个体的脏活检和组织病理学分析 (PAS,Masson,免疫光学,免疫电子显微镜).
- 对COL4A4和TNXB基因突变的分析.
主要成果:
- 在 COL4A4 基因中检测到一种新的异质合体框架转移突变 (c.1826delC).
- 在几个家族成员中发现了TNXB基因的混合误解变异 (c.86G>A,p.R29Q).
- 同样的突变导致不同的临床表现和不同的病理变化跨家庭成员.
结论:
- 在这种患有遗传性炎的中国家族中,发现了一种新的异构性COL4A4突变和TNXB共同突变.
- 同样的COL4A4突变可以在不同的个体中表现出不同的病理和临床特征.
- 这一发现为遗传性病提供了新的见解,并强调了先进的遗传和活检技术对诊断和治疗的必要性.
相关概念视频
Type IV Collagen of Basal Lamina
2.3K
Type IV collagen is a 400 nm long, network-forming collagen that acts as a barrier between the epithelial and endothelial cells. Type IV collagen forms the backbone of the basement membrane by scaffolding with laminin, entactin, proteoglycans, and fibronectin. Apart from rendering structural support to the basement membrane, it also helps entail signaling potentials necessary for both pathological and physiological functions.
A type IV collagen molecule has six alpha chains which can...
A type IV collagen molecule has six alpha chains which can...
2.3K
Pleiotropy
40.7K
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
40.7K
Renal Corpuscle
2.9K
The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous...
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous...
2.9K
Genetic Lingo
103.3K
Overview
103.3K
Mutations
83.8K
Overview
83.8K
Chronic Kidney Disease II: Clinical Manifestations
42
Chronic Kidney Disease (CKD) progressively impairs multiple body systems due to the accumulation of uremic toxins, which disrupt cellular functions across various organs.Neurologic symptomsNeurologic symptoms often arise early in CKD, as uremic toxin buildup drives changes in cognitive and motor functions. Patients frequently experience fatigue, headache, confusion, difficulty concentrating, and, in severe cases, seizures. Peripheral neuropathy commonly manifests as burning sensations in the...
42


