Academic Journal
Mutant huntingtin expression in somatostatin-positive interneurons contributes to neurophysiological and behavioral phenotypes in BACHD mice.
| Τίτλος: | Mutant huntingtin expression in somatostatin-positive interneurons contributes to neurophysiological and behavioral phenotypes in BACHD mice. |
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| Συγγραφείς: | Fowler JA; Department of Neurology, Killion Center for Neurodegeneration and Experimental Therapeutics, The University of Alabama at Birmingham Heersink School of Medicine, Birmingham, AL 35294, USA.; Graduate Biomedical Sciences, Biochemistry and Structural Biology Theme, The University of Alabama at Birmingham Heersink School of Medicine, Birmingham, AL 35294, USA., Scarduzio M; Department of Neurology, Killion Center for Neurodegeneration and Experimental Therapeutics, The University of Alabama at Birmingham Heersink School of Medicine, Birmingham, AL 35294, USA., Pool C; College of Arts and Sciences, Xavier University of Louisiana, New Orleans, LA 70125, USA.; Summer in Biomedical Sciences (SIBS) Undergraduate Research Program, The University of Alabama at Birmingham, Birmingham, AL 35294, USA., Mahan CD; Department of Neurology, Killion Center for Neurodegeneration and Experimental Therapeutics, The University of Alabama at Birmingham Heersink School of Medicine, Birmingham, AL 35294, USA., Gray M; Department of Neurology, Killion Center for Neurodegeneration and Experimental Therapeutics, The University of Alabama at Birmingham Heersink School of Medicine, Birmingham, AL 35294, USA. |
| Πηγή: | Disease models & mechanisms [Dis Model Mech] 2026 Mar 01; Vol. 19 (3). Date of Electronic Publication: 2026 Mar 27. |
| Τύπος έκδοσης: | Journal Article |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: Company of Biologists Ltd Country of Publication: England NLM ID: 101483332 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1754-8411 (Electronic) Linking ISSN: 17548403 NLM ISO Abbreviation: Dis Model Mech Subsets: MEDLINE |
| Imprint Name(s): | Original Publication: Cambridge : Company of Biologists Ltd., c2008- |
| Ιατρικοί όροι (MeSH): | Interneurons*/metabolism , Huntingtin Protein*/metabolism , Huntingtin Protein*/genetics , Somatostatin*/metabolism , Mutation*/genetics , Mutant Proteins*/metabolism , Behavior, Animal*, Anxiety/physiopathology ; Anxiety/complications ; Huntington Disease/physiopathology ; Animals ; Phenotype ; Male ; Motor Activity ; Mice |
| Περίληψη: | Huntington's disease (HD) is caused by expansion of the polyglutamine stretch in the widely expressed huntingtin (HTT) protein. Patients with HD have motor, psychiatric and cognitive changes due to changes in a variety of neural circuits. Somatostatin-expressing interneurons (SST-INs) can regulate neural circuits largely by inhibiting their target cells. Behaviorally, brain-wide inhibition of SST-INs increased anxiety in mice. Silencing striatal SST-INs caused a decrease in movement in the open field. Mutant HTT (mHTT)-expressing mice exhibited abnormal motor, cognitive and psychiatric-like changes, as well as electrophysiological changes in a variety of neurons, including striatal SST-INs. However, it is unknown whether cell-autonomous expression of mHTT in SST-INs contributes to HD-associated behavioral phenotypes or causes abnormal electrophysiological changes in striatal SST-INs. To address these questions, we reduced mHTT expression in SST-INs throughout the brain of BACHD mice. Our findings show that brain-wide reduction of mHTT in SST-INs rescues anxiety-like behavior in male BACHD mice in the light-dark box, without improving performance in the open field or on the rotarod. Additionally, expression of mHTT in striatal SST-INs cell autonomously drives their increased excitability. (© 2026. Published by The Company of Biologists.) |
| Competing Interests: | Competing interests The authors declare no competing or financial interests. |
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| Grant Information: | 5R01NS089750 United States NS NINDS NIH HHS; Jarman F. Lowder Endowment; Hereditary Disease Foundation; University of Alabama at Birmingham |
| Contributed Indexing: | Keywords: BACHD; Huntington's disease; Interneurons; Somatostatin; Striatum |
| Substance Nomenclature: | 0 (Huntingtin Protein) 51110-01-1 (Somatostatin) 0 (Mutant Proteins) |
| Entry Date(s): | Date Created: 20260206 Date Completed: 20260707 Latest Revision: 20260813 |
| Update Code: | 20260813 |
| PubMed Central ID: | PMC13054931 |
| DOI: | 10.1242/dmm.052513 |
| PMID: | 41648922 |
| Βάση Δεδομένων: | MEDLINE |
| ISSN: | 1754-8411 |
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| DOI: | 10.1242/dmm.052513 |