γ-Secretase and its modulators: Twenty years and beyond
Open accessAbstract
Twenty years ago, Wolfe, Xia, and Selkoe identified two aspartate residues in Alzheimer's presenilin protein that constitute the active site of the γ-secretase complex. Mutations in the genes encoding amyloid precursor protein (APP) or presenilin (PS) cause early onset familial Alzheimer's disease (AD), and sequential cleavages of the APP by β-secretase and γ-secretase/presenilin generate amyloid β protein (Aβ), the major component of pathological hallmark, neuritic plaques, in brains of AD patients. Therapeutic strategies centered on targeting γ-secretase/presenilin to reduce amyloid were implemented and led to several high profile clinical trials. This review article focuses on the studies of γ-secretase and its inhibitors/modulators since the discovery of presenilin as the γ-secretase. While a lack of complete understanding of presenilin biology renders failure of clinical trials, the lessons learned from some γ-secretase modulators, while premature for human testing, provide new directions to develop potential therapeutics. Imbalanced Aβ homeostasis is an upstream event of neurodegenerative processes. Exploration of γ-secretase modulators for their roles in these processes is highly significant, e.g., decreasing neuroinflammation and levels of phosphorylated tau, the component of the other AD pathological hallmark, neurofibrillary tangles. Agents with excellent human pharmacology hold great promise in suppressing neurodegeneration in pre-symptomatic or early stage AD patients.
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Gamma-secretase modulators alter APP processing to lower Aβ42 and raise Aβ40 without affecting processing of other substrates.
“An alternative means of inhibiting amyloidogenic processing of Aβ by γ-secretase is to use γ-secretase modulators (GSM) that alter processing of APP (lower Aβ42 and higher Aβ40 levels) without influencing processing of other substrates (Xia, 2019).”
From Alzheimer Disease: An Update on Pathobiology and Treatment Strategies (2019) · cites this paper as Xia, 2019
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Amyloid β Protein: Aβ40 Inhibits Aβ42 Oligomerization
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Phenylpiperidine‐type γ‐secretase modulators target the transmembrane domain 1 of presenilin 1
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Self-citationAβ40 Protects Non-toxic Aβ42 Monomer from Aggregation
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BMS-708,163 Targets Presenilin and Lacks Notch-Sparing Activity
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Membrane Topology of γ-Secretase Component PEN-2
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Novel γ-Secretase Enzyme Modulators Directly Target Presenilin Protein
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Intramembrane proteolysis by presenilin and presenilin-like proteases
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Self-citationModulation of γ-secretase specificity using small molecule allosteric inhibitors
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Piperidine Acetic Acid Based γ-Secretase Modulators Directly Bind to Presenilin-1
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Piperidine-derived γ-secretase modulators
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Self-citationPharmacological and Toxicological Properties of the Potent Oral γ-Secretase Modulator BPN-15606
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In vitro and in vivo profiling of CHF5022 and CHF5074
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Piperazinyl pyrimidine derivatives as potent γ-secretase modulators
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Phenotypic analysis of images of zebrafish treated with Alzheimer's γ-secretase inhibitors
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Self-citationPurine derivatives as potent γ-secretase modulators
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Cholestenoic acid, an endogenous cholesterol metabolite, is a potent γ-secretase modulator
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(S)-N-(5-Chlorothiophene-2-sulfonyl)-β,β-diethylalaninol a Notch-1-sparing γ-secretase inhibitor
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Modulation of Aβ42 in vivo by γ-secretase modulator in primates and humans
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Versatile nanomaterials for Alzheimer’s disease: Pathogenesis inspired disease-modifying therapy
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- Authors
- Xia, W.
- Affiliations
- Boston University (US)
- Corresponding author
- Xia, Weiming
- ORCID
- Xia, Weiming
- Venue
- Neuroscience Letters
- Publisher
- Elsevier BV
- Published
- 2019-05
- Volume
- 701
- Pages
- 162-169
- ISSN
- 0304-3940 (ISSN-L)
- PMC
- PMC7008970
- OpenAlex
- W2913752334
- Cited by
- 54
- References
- 135
- Citations by year
- 2026: 1 · 2025: 5 · 2024: 3 · 2023: 6 · 2022: 9 · 2021: 11 · 2020: 8 · 2019: 11
- FWCI
- 1.15
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Neuroscience Letters (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- U.S. Department of Veterans Affairs (I01 BX003527, I21BX003807)
- Topics
- Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
- Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
- Health Sciences › Medicine › Pharmacology › Cholinesterase and Neurodegenerative Diseases
- Keywords
- gamma-secretase, presenilin, gamma-secretase inhibitors, γ-secretase modulators, Alzheimer's disease, amyloid-beta, amyloid precursor protein, familial Alzheimer's disease, neuroinflammation, tau phosphorylation, neurofibrillary tangles, neurodegeneration
- MeSH terms
- Alzheimer Disease, Animals, Humans, Protease Inhibitors, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, tau Proteins, Amyloid Precursor Protein Secretases
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