自閉症関連遺伝子の脳への経路が重要である可能性(Many genes linked to autism may act via brain pathways)

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2026-05-01 イェール大学

Yale Universityの研究は、自閉スペクトラム症(ASD)に関連する多数の遺伝子について、それぞれの個別作用よりも「脳内での働き方の経路(パスウェイ)」が重要である可能性を示した。解析の結果、異なる遺伝子変異でも共通の神経発達経路や細胞機能に収束する傾向が確認され、症状の共通性を説明する手がかりとなった。これにより、単一遺伝子ではなく経路全体を標的とした診断や治療戦略の重要性が示唆される。ASDの理解を深め、より効果的な個別化医療や創薬につながる基盤的知見と位置づけられる。

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神経発達障害リスク遺伝子の転写産物および表現型の収束(試験管内および生体内) Transcriptomic and phenotypic convergence of neurodevelopmental disorder risk genes in vitro and in vivo

Meilin Fernandez Garcia,Kayla Retallick-Townsley,April Pruitt,Elizabeth A. Davidson,Novin Balafkan,Jonathan Warrell,Tzu-Chieh Huang,Alfred Kibowen,Zhiyuan Chu,Yi Dai,Sarah E. Fitzpatrick,Ran Meng,Annabel Sen,Sophie Cohen,Olivia Livoti,Suha Khan,Charlotte Becker,Andre Luiz Teles e Silva,Jenny Liu,Grace Dossou,Jen Cheung,Susanna Liu,Sadaf Ghorbani,P. J. Michael Deans,… Kristen Brennand
Nature Neuroscience  Published:24 April 2026
DOI:https://doi.org/10.1038/s41593-026-02247-7

自閉症関連遺伝子の脳への経路が重要である可能性(Many genes linked to autism may act via brain pathways)

Abstract

Diverse risk genes have been identified for neurodevelopmental disorders (NDDs), but how these genes converge on similar biological pathways in neurons, and thus give rise to similar phenotypes, is unclear. Here we apply a pooled CRISPR approach to successfully target 23 NDD loss-of-function genes with roles in chromatin biology and examine convergent effects on gene expression across human induced pluripotent stem cell-derived neural progenitor cells, glutamatergic neurons and GABAergic neurons. Points of convergence vary between these cell types, with the greatest number of convergent genes and strongest convergent networks in mature glutamatergic neurons, where they broadly represent synaptic, epigenetic and, unexpectedly, mitochondrial pathways. The most convergent networks were observed between NDD genes with shared biological annotations, clinical associations and co-expression patterns in human post-mortem brain. Drugs that were predicted to reverse convergent transcriptomic signatures and/or arousal and sensory processing behaviors ameliorated behavioral phenotypes in zebrafish NDD gene mutants. These results suggest that convergent effects of NDD risk genes could provide clinically useful insights.

医療・健康
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