Autism gene Ube3a and seizures impair sociability by repressing VTA Cbln1

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Autism gene Ube3a and seizures impair sociability by repressing VTA Cbln1

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Title: Autism gene Ube3a and seizures impair sociability by repressing VTA Cbln1
Author: Krishnan, Vaishnav; Stoppel, David C.; Nong, Yi; Johnson, Mark A.; Nadler, Monica J.S.; Ozkaynak, Ekim; Teng, Brian L.; Nagakura, Ikue; Mohammad, Fahim; Silva, Michael A.; Peterson, Sally; Cruz, Tristan J.; Kasper, Ekkehard M.; Arnaout, Ramy; Anderson, Matthew P.

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Citation: Krishnan, V., D. C. Stoppel, Y. Nong, M. A. Johnson, M. J. Nadler, E. Ozkaynak, B. L. Teng, et al. 2017. “Autism gene Ube3a and seizures impair sociability by repressing VTA Cbln1.” Nature 543 (7646): 507-512. doi:10.1038/nature21678. http://dx.doi.org/10.1038/nature21678.
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Abstract: Summary Maternally inherited 15q11-13 chromosomal triplications cause a frequent and highly penetrant autism linked to increased gene dosages of UBE3A, which both possesses ubiquitin-ligase and transcriptional co-regulatory functions. Here, using in vivo mouse genetics, we show that increasing UBE3A in the nucleus down-regulates glutamatergic synapse organizer cerebellin-1 (Cbln1) that is needed for sociability in mice. Epileptic seizures also repress Cbln1 and are found to expose sociability impairments in mice with asymptomatic increases of UBE3A. This Ube3a-seizure synergy maps to glutamate neurons of the midbrain ventral tegmental area (VTA) where Cbln1 deletions impair sociability and weaken glutamatergic transmission. We provide preclinical evidence that viral-vector-based chemogenetic activations of, or Cbln1 restorations in VTA glutamatergic neurons rescues sociability deficits induced by Ube3a and/or seizures. Our results suggest a gene × seizure interaction in VTA glutamatergic neurons that impairs sociability by downregulating Cbln1, a key node in the expanding protein interaction network of autism genes.
Published Version: doi:10.1038/nature21678
Other Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5364052/pdf/
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:34491817
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