Somatic mutations in disorders with disrupted brain connectivity

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Mutations occur during cell division in all somatic lineages. Because neurogenesis persists throughout human life, somatic mutations in the brain arise during development and accumulate with the aging process. The human brain consists of 100 billion neurons that form an extraordinarily intricate network of connections to achieve higher level cognitive functions. Due to this network architecture, perturbed neuronal functions are rarely restricted to a focal area; instead, they are often spread via the neuronal network to affect other connected areas. Although somatic diversity is an evident feature of the brain, the extent to which somatic mutations affect the neuronal structure and function and their contribution to neurological disorders associated with disrupted brain connectivity remain largely unexplored. Notably, recent reports indicate that brain somatic mutations can indeed play a critical role that leads to the structural and functional abnormalities of the brain observed in several neurodevelopmental disorders. Here, I review the extent and significance of brain somatic mutations and provide my perspective regarding these mutations as potential molecular lesions underlying relatively common conditions with disrupted brain connectivity. Moreover, I discuss emerging technical platforms that will facilitate the detection of low-frequency somatic mutations and validate the biological functions of the identified mutations in the context of brain connectivity
Publisher
NATURE PUBLISHING GROUP
Issue Date
2016-06
Language
English
Article Type
Review
Keywords

DE-NOVO MUTATIONS; FOCAL CORTICAL DYSPLASIA; AUTISM SPECTRUM DISORDER; COPY-NUMBER VARIATION; ADULT HUMAN BRAIN; ALZHEIMERS-DISEASE; FUNCTIONAL CONNECTIVITY; MONOZYGOTIC TWINS; SINGLE-CELL; NEURODEGENERATIVE DISEASES

Citation

EXPERIMENTAL AND MOLECULAR MEDICINE, v.48

ISSN
1226-3613
DOI
10.1038/emm.2016.53
URI
http://hdl.handle.net/10203/210172
Appears in Collection
MSE-Journal Papers(저널논문)
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