Cited by 254Genetics and Neurodevelopmental DisordersChild Nutrition and Feeding IssuesNeuroscience and Neuropharmacology Research

Deletion of Mecp2 in Sim1-Expressing Neurons Reveals a Critical Role for MeCP2 in Feeding Behavior, Aggression, and the Response to Stress

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Fyffe, Sharyl L., Neul, Jeff L., Samaco, Rodney C., Chao, Hsiao-Tuan, Ben-Shachar, Shay, Moretti, Paolo, McGill, Bryan E., Goulding, Evan H. +3 more·2008·Neuron

Abstract

Rett Syndrome (RTT) is an autism spectrum disorder caused by mutations in the X-linked gene encoding methyl-CpG binding protein 2 (MeCP2). In order to map the neuroanatomic origins of the complex neuropsychiatric behaviors observed in patients with RTT and to uncover endogenous functions of MeCP2 in the hypothalamus, we removed Mecp2 from Sim1-expressing neurons in the hypothalamus using Cre-loxP technology. Loss of MeCP2 in Sim1-expressing neurons resulted in mice that recapitulated the abnormal physiological stress response that is seen upon MeCP2 dysfunction in the entire brain. Surprisingly, we also uncovered a role for MeCP2 in the regulation of social and feeding behaviors since the Mecp2 conditional knockout (CKO) mice were aggressive, hyperphagic, and obese. This study demonstrates that deleting Mecp2 in a defined brain region is an excellent approach to map the neuronal origins of complex behaviors and provides new insight about the function of MeCP2 in specific neurons.

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Crossref · 10.1016/j.neuron.2008.07.030

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Authors
Fyffe, S. L., Neul, J. L., Samaco, R. C., Chao, H.-T., Ben-Shachar, S., Moretti, P., McGill, B. E., Goulding, E. H., Sullivan, E., Tecott, L. H., & Zoghbi, H. Y.
Affiliations
  • Baylor College of Medicine (US)
  • University of California, San Francisco (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
Zoghbi, Huda Y.
Venue
Neuron
Publisher
Elsevier BV
Published
2008-09
Volume
59
Issue
6
Pages
947-958
ISSN
0896-6273 (ISSN-L)
OpenAlex
W1992789817
Cited by
254
References
62
Citations by year
2026: 12 · 2025: 7 · 2024: 5 · 2023: 8 · 2022: 10 · 2021: 12 · 2020: 9 · 2019: 13 · 2018: 11 · 2017: 11 · 2016: 19 · 2015: 21 · 2014: 26 · 2013: 19 · 2012: 23
FWCI
9.12
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • International Rett Syndrome Foundation
  • National Institute of Neurological Disorders and Stroke (NS057819)
  • National Institutes of Health
  • Autism Speaks
  • Simons Foundation
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Health Sciences › Medicine › Psychiatry and Mental health › Child Nutrition and Feeding Issues
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
MeCP2, Rett syndrome, hypothalamus, conditional knockout mice, feeding behavior, hyperphagia, obesity, aggression, stress response, social behavior
MeSH terms
Adaptation, Psychological, Aggression, Animals, Appetite Regulation, Feeding Behavior, Genetic Engineering, Hypothalamus, Mice, Inbred Strains, Neurons, Repressor Proteins, Social Behavior, Stress, Psychological, Gene Deletion, Mice, Knockout, Adiposity, Mice, Methyl-CpG-Binding Protein 2, Basic Helix-Loop-Helix Proteins

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