Cited by 19Genetics and Neurodevelopmental DisordersAutism Spectrum Disorder ResearchTuberous Sclerosis Complex Research

Divergent dysregulation of gene expression in murine models of fragile X syndrome and tuberous sclerosis

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Kong, Sek Won, Sahin, Mustafa, Collins, Christin D, Wertz, Mary H, Campbell, Malcolm G, Leech, Jarrett D, Krueger, Dilja, Bear, Mark F +2 more·2014·Molecular Autism

Abstract

Background: Fragile X syndrome and tuberous sclerosis are genetic syndromes that both have a high rate of comorbidity with autism spectrum disorder (ASD). Several lines of evidence suggest that these two monogenic disorders may converge at a molecular level through the dysfunction of activity-dependent synaptic plasticity. Methods: To explore the characteristics of transcriptomic changes in these monogenic disorders, we profiled genome-wide gene expression levels in cerebellum and blood from murine models of fragile X syndrome and tuberous sclerosis. Results: Differentially expressed genes and enriched pathways were distinct for the two murine models examined, with the exception of immune response-related pathways. In the cerebellum of the Fmr1 knockout (Fmr1- KO) model, the neuroactive ligand receptor interaction pathway and gene sets associated with synaptic plasticity such as long-term potentiation, gap junction, and axon guidance were the most significantly perturbed pathways. The phosphatidylinositol signaling pathway was significantly dysregulated in both cerebellum and blood of Fmr1-KO mice. In Tsc2 heterozygous (+/−) mice, immune system-related pathways, genes encoding ribosomal proteins, and glycolipid metabolism pathways were significantly changed in both tissues. Conclusions: Our data suggest that distinct molecular pathways may be involved in ASD with known but different genetic causes and that blood gene expression profiles of Fmr1- KO and Tsc2+/− mice mirror some, but not all, of the perturbed molecular pathways in the brain.

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  • TSC arises from heterozygous mutations in TSC1 or TSC2 and is frequently associated with long-term and working memory deficits, intellectual disability, ASD, and epilepsy.

    “Frequently associated with deficits in long-term and working memory, along with intellectual disability, ASD, and epilepsy, TSC arises from heterozygous mutations in the TSC1 or TSC2 genes (Ehninger et al., 2009; Ehninger et al., 2008; Kong et al., 2014; Tsai et al., 2012).”

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Authors
Kong, S. W., Sahin, M., Collins, C. D., Wertz, M. H., Campbell, M. G., Leech, J. D., Krueger, D., Bear, M. F., Kunkel, L. M., & Kohane, I. S.
Affiliations
  • Boston Children's Hospital (US)
  • Harvard University (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
Kohane, Isaac S
Venue
Molecular Autism
Published
2014-02-24
Volume
5
Issue
1
Pages
16-16
ISSN
2040-2392 (ISSN-L)
OpenAlex
W2155030181
Cited by
19
References
55
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2022: 1 · 2021: 2 · 2019: 2 · 2018: 1 · 2017: 3 · 2016: 3 · 2015: 3
FWCI
1.97
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Molecular Autism (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc)
Funders
  • Autism Speaks
  • Charles H. Hood Foundation
  • National Institutes of Health (5p50mh094267-05, P50MH094267)
  • Manton Center for Orphan Disease Research, Boston Children's Hospital
  • National Institute of Mental Health (P50-MH094267, R01MH085143)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (P30HD018655)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Health Sciences › Medicine › Physiology › Tuberous Sclerosis Complex Research
Keywords
fragile X syndrome, tuberous sclerosis complex, autism spectrum disorder, gene expression dysregulation, Fmr1 knockout mice, cerebellum, blood transcriptome, synaptic plasticity, long-term potentiation, gap junctions, axon guidance, immune response, ribosomal proteins, glycolipid metabolism, comorbidities

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