期刊
EMBO MOLECULAR MEDICINE
卷 9, 期 11, 页码 1537-1557出版社
WILEY
DOI: 10.15252/emmm.201707763
关键词
behaviour; gangliosides; HD mouse models; huntingtin; neuroprotection
资金
- Canadian Institutes of Health Research (CIHR) [MOP 111219, PDD 115217]
- Alberta Innovates Health Solutions/Pfizer
- Huntington Society of Canada
- CIHR
- Canada Research Chair
- Alberta Innovates [201300188] Funding Source: researchfish
Huntington's disease (HD) is a progressive neurodegenerative disorder characterized by motor, cognitive and psychiatric problems. Previous studies indicated that levels of brain gangliosides are lower than normal in HD models and that administration of exogenous ganglioside GM1 corrects motor dysfunction in the YAC128 mouse model of HD. In this study, we provide evidence that intraventricular administration of GM1 has profound disease-modifying effects across HD mouse models with different genetic background. GM1 administration results in decreased levels of mutant huntingtin, the protein that causes HD, and in a wide array of beneficial effects that include changes in levels of DARPP32, ferritin, Iba1 and GFAP, modulation of dopamine and serotonin metabolism, and restoration of normal levels of glutamate, GABA, L-Ser and D-Ser. Treatment with GM1 slows down neurodegeneration, white matter atrophy and body weight loss in R6/2 mice. Motor functions are significantly improved in R6/2 mice and restored to normal in Q140 mice, including gait abnormalities that are often resistant to treatments. Psychiatric-like and cognitive dysfunctions are also ameliorated by GM1 administration in Q140 and YAC128 mice. The widespread benefits of GM1 administration, at molecular, cellular and behavioural levels, indicate that this ganglioside has strong therapeutic and disease-modifying potential in HD.
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