全エクソームシーケンシングは,重度の脳不発症における WDR62のリセシブ変異を特定します
Kaya Bilgüvar1, Ali Kemal Oztürk, Angeliki Louvi
1Department of Neurosurgery, Yale University School of Medicine, New Haven, Connecticut 06510, USA.
Nature
|August 24, 2010
まとめ
WDリピートドメイン62 (WDR62) のリセシブ突然変異は,小頭症やパキギリアを含む重度の脳異常を引き起こします. 全エクソーム配列解析により,WDR62が人間の脳皮質の発達における重要な遺伝子として特定されました.
科学分野:
- 神経科学は神経科学である.
- 遺伝学 遺伝学とは
- 発達生物学 発達生物学について
背景:
- 人間の脳皮質の発達には,原始細胞の生成,増殖,神経細胞の移動が含まれています.
- 皮質の異常形成の分子基礎を理解することは,遺伝的異質性と小数の患者集団のために制限されています.
研究 の 目的:
- 全エクソーム配列解析を用いて,重度の脳皮質異常の遺伝的原因を特定する.
- 脳の発達におけるWDリピートドメイン62 (WDR62) の役割を明らかにする.
主な方法:
- 全エクソーム配列解析は,皮質発達の変形を有する患者の原因遺伝子を特定するために使用されました.
- 人間とマウスの組織におけるWDR62の発現分析を行った.
主要な成果:
- WDR62のリセシブ突然変異は,小頭症やパキギリアを含む重度の脳皮質異常のスペクトルの原因として特定されました.
- WDR62は,胚性ニューロゲネシス中の神経原生体で発現し,主に核である.
- WDR62の変異は,以前から異なる発達障害を統合して,多様な現象型につながる可能性があります.
結論:
- WDR62は,人間の脳皮質の発達に不可欠な遺伝子です.
- 全エクソームシーケンシングは,複雑な遺伝疾患における疾患を引き起こす遺伝子を特定するのに有効です.
- これらの発見は,皮質発達の異常形成の分子病原性についての新しい洞察を提供します.
関連する概念動画
Pleiotropy
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,...
Sex-linked Disorders
Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
Genetic Lingo
Overview
Exon Recombination
The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes.
Exon shuffling follows “splice frame rules.” Each exon has three reading...
Exon shuffling follows “splice frame rules.” Each exon has three reading...
Incomplete Dominance
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.
Genomic Imprinting and Inheritance
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...


