A small molecule p75NTRligand normalizes signalling and reduces Huntington’s disease phenotypes in R6/2 and BACHD mice
Open accessAbstract
Decreases in the ratio of neurotrophic versus neurodegenerative signalling play a critical role in Huntington’s disease (HD) pathogenesis and recent evidence suggests that the p75 neurotrophin receptor (NTR) contributes significantly to disease progression. p75NTR signalling intermediates substantially overlap with those promoting neuronal survival and synapse integrity and with those affected by the mutant huntingtin (muHtt) protein. MuHtt increases p75NTR-associated deleterious signalling and decreases survival signalling suggesting that p75NTR could be a valuable therapeutic target. This hypothesis was investigated by examining the effects of an orally bioavailable, small molecule p75NTR ligand, LM11A-31, on HD-related neuropathology in HD mouse models (R6/2, BACHD). LM11A-31 restored striatal AKT and other pro-survival signalling while inhibiting c-Jun kinase (JNK) and other degenerative signalling. Normalizing p75NTR signalling with LM11A-31 was accompanied by reduced Htt aggregates and striatal cholinergic interneuron degeneration as well as extended survival in R6/2 mice. The p75NTR ligand also decreased inflammation, increased striatal and hippocampal dendritic spine density, and improved motor performance and cognition in R6/2 and BACHD mice. These results support small molecule modulation of p75NTR as an effective HD therapeutic strategy. LM11A-31 has successfully completed Phase I safety and pharmacokinetic clinical trials and is therefore a viable candidate for clinical studies in HD.
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Normalizing p75NTR signaling prevents memory and synaptic deficits in HD mutant mice.
“Normalizing p75NTR signaling prevented memory and synaptic deficits in HD mutant mice [203,204,205,208].”
From RhoA Signaling in Neurodegenerative Diseases (2022) · cites this paper as [208]
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RhoA Signaling in Neurodegenerative Diseases
Schmidt, S. I., Blaabjerg, M., Freude, K., & Meyer, M. (2022) · Cells · doi:10.3390/cells11091520 · Cited by 110 · see citing works
Petkau, T. L., Hill, A., Connolly, C., Lu, G., Wagner, P., Kosior, N., Blanco, J., & Leavitt, B. R. (2019) · Human Molecular Genetics · doi:10.1093/hmg/ddz009 · Cited by 37 · see citing works
- Authors
- Simmons, D. A., Belichenko, N. P., Ford, E. C., Semaan, S., Monbureau, M., Aiyaswamy, S., Holman, C. M., Condon, C., Shamloo, M., Massa, S. M., & Longo, F. M.
- Affiliations
- Stanford Medicine (US)
- San Francisco VA Medical Center (US)
- Corresponding author
- Simmons, Danielle A.
- Venue
- Human Molecular Genetics
- Publisher
- Oxford University Press (OUP)
- Published
- 2016-09-16
- Volume
- 25
- Issue
- 22
- Pages
- ddw316
- ISSN
- 0964-6906 (ISSN-L)
- 1460-2083
- PMC
- PMC5418739
- OpenAlex
- W2518802028
- Cited by
- 46
- References
- 7
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 3 · 2023: 4 · 2022: 5 · 2021: 8 · 2020: 4 · 2019: 6 · 2018: 8 · 2017: 2 · 2016: 1
- FWCI
- 2.60
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- cc-by-nc
- Locations
- Human Molecular Genetics (publishedVersion, cc-by-nc)
- PubMed Central (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- Funders
- U.S. Department of Veterans Affairs (I01 BX000267)
- Jean Perkins Foundation
- National Institutes of Health (1r21ns081089-01a1, R21 NS081089-01, NS069375)
- National Institute on Aging (P50AG047366)
- National Institute of Neurological Disorders and Stroke (P30NS069375, R21 NS081089)
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Genetic Neurodegenerative Diseases
- Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
- Health Sciences › Medicine › Physiology › Lysosomal Storage Disorders Research
- Keywords
- Huntington's disease, p75 neurotrophin receptor, LM11A-31, small-molecule ligands, mutant huntingtin, R6/2 mice, BACHD mice, Akt signaling, c-Jun kinase, neurodegeneration, striatal cholinergic interneurons, dendritic spine density, neuroinflammation, motor and cognitive deficits, neuroprotective therapy
- MeSH terms
- Huntingtin Protein, Animals, Disease Models, Animal, Huntington Disease, Isoleucine, Ligands, Male, Mice, Transgenic, Morpholines, Phenotype, Protein Binding, Random Allocation, Signal Transduction, Receptors, Nerve Growth Factor, Mice, Molecular Targeted Therapy
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