异合的MAP3K20变体会导致外皮发育不良,头骨突,神经感官听力损失和四肢异常
Daniel Brooks1, Elizabeth Burke2, Sukyeong Lee3,4
1Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA.
Human genetics
|March 7, 2024
概括
在MAP3K20中异体变异会导致影响发育的新发育障碍,包括骨突变和四肢异常. 这扩大了已知的先天性异常的遗传原因,揭示了新的基因型-表型相关性.
科学领域:
- 遗传学 遗传学 是一个
- 发展生物学 发展生物学
- 分子生物学分子生物学
背景情况:
- 在MAP3K20中双性致病变体与特定的先天性疾病有关.
- 在MAP3K20中,异合体变异并没有与明显的表型有明确的关联.
- MAP3K20编码了一个参与细胞信号通路的基因激活蛋白激酶.
研究的目的:
- 描述与MAP3K20基因中异合的de novo变体相关的表型谱.
- 研究MAP3K20在人类发育中的作用,特别是与特定的先天性异常有关.
- 为了确定MAP3K20新型变异的基因型-表型相关性.
主要方法:
- 在MAP3K20.20中对5个具有新型异合体变异的个体进行临床评估.
- 基因测序用于识别MAP3K20基因中的变异.
- 对临床特征的分析,包括骨突,四肢异常,听力损失和外皮性发育不良类型的表型.
主要成果:
- 在MAP3K20链接区域中,有5个具有异合体de novo变异的个体呈现出不同的临床特征.
- 观察到的表型包括头骨突,四肢异常,神经感官听力损失和外皮发育不良等特征.
- 确定的变体位于MAP3K20.20的酶和氨酸拉链域之间的特定区域.
结论:
- 在MAP3K20中,新生异构的变体定义了一个新的发育障碍谱.
- 这些发现扩大了与MAP3K20.20相关的已知表型谱.
- MAP3K20在内皮 - 介质细胞过渡中的作用可能是观察到的先天性异常的基础.
更多相关视频
相关概念视频
Pleiotropy
40.4K
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,...
40.4K
Genetic Lingo
102.7K
Overview
102.7K
Genomic Imprinting and Inheritance
34.4K
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
34.4K
MAPK Signaling Cascades
5.5K
Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
5.5K
Incomplete Dominance
22.6K
Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
22.6K
Lethal Alleles
15.4K
Agouti: A Lethal Allele
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
15.4K


