远端PLP1增强剂中的微切除会导致遗传性性 2
Xun Zhou1, Yige Wang2, Runcheng He2
1Department of Geriatric Neurology, Xiangya Hospital, Central South University, Changsha, China.
Annals of clinical and translational neurology
|July 21, 2023
概括
影响PLP1基因增强者的Xq22.2区域的微切除被确定为家族遗传性性 (HSP) 的原因. 这一发现突显了SPG2中非编码基因变化的作用.
科学领域:
- 遗传学 是一个遗传学.
- 神经科学是一个神经科学.
- 分子生物学分子生物学
背景情况:
- 遗传性性 (HSP) 是一组遗传的神经疾病.
- 它在遗传上异质,涉及已知70多个基因.
- 在HSP病例中,很大一部分仍未被基因诊断出来.
研究的目的:
- 调查疑似HSP家族的分子基础,其中包括性,发育迟缓,性和低髓化.
- 使用整体外体序列 (WES) 和长读序列 (LRS) 识别致病性遗传突变.
主要方法:
- 整个外体序列测序 (WES) 在13个家族成员身上进行,以检测单核酸变异 (SNV) 和副本数变异 (CNV).
- 使用长读序列 (LRS) 来高准确地验证WES的CNV发现.
- 对已识别的变异进行了家族内的同隔离分析.
主要成果:
- 在MORF4L2基因中发现了一个错误的SNV (c.195G>T,p.E65D).
- 在Xq22.2,与MORF4L2基因相邻的微切除 (大约24.5kb) 被检测并通过LRS.验证.
- 无论是SNV还是微删除,都在受影响的家族内共同分离.
结论:
- 一个包含PLP1基因的远端增强体的Xq22.2微删除被确定为该家族中SPG2的可能原因.
- 删除可能导致小基细胞中的PLP1转录减少,损害髓维护,并导致SPG2表型.
- 这项研究强调了SPG2.2遗传病因学中非编码基因组变化的重要性.
更多相关视频
09:34Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
Published on: April 4, 2018
33.8K
09:37Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information
Published on: August 15, 2019
9.8K
相关概念视频
Cytoskeletal Linker Proteins - Plakins
2.3K
Plakins are large proteins with binding domains for microtubules, microfilaments, intermediate filaments, and membrane-associated protein complexes at cell junctions. Plakin functions are evolutionarily conserved and are primarily involved in organizing the different components of the cytoskeleton by crosslinking them to each other and connecting them to the cell-matrix and cell adhesion complexes. They are also known to interact with signal transducers, serve as scaffolds for signaling...
2.3K
Pleiotropy
40.6K
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,...
40.6K
Genomic Imprinting and Inheritance
34.7K
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...
34.7K
Alternative RNA Splicing
21.4K
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
21.4K
