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Advancement of Understanding Alzheimer’s Disease Susceptibility and Novel Drug Targets

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Neurobiology".

Deadline for manuscript submissions: 30 October 2025 | Viewed by 1280

Special Issue Editors


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Guest Editor
Faculty of Medicine, ULB Neuroscience Institute, Université Libre de Bruxelles, 808 Route de Lennik, 1070 Brussels, Belgium
Interests: Alzheimer’s disease; tau; amyloid β; prion-like
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Faculty of Medicine, ULB Neuroscience Institute, Université Libre de Bruxelles, 808 Route de Lennik, 1070 Brussels, Belgium
Interests: Alzheimer’s disease; tau; amyloid β
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

To date, there are over 55 million individuals globally living with dementia. This number will nearly double every 20 years, becoming a substantial social issue. Alzheimer's disease (AD) and related dementia (ADRD) are the major causes of dementia, leading to disability, dependence, and death among the elderly. In the last two decades, significant progress has been made in the understanding of the pathogenic mechanisms of AD and ADRD, providing a broad range of knowledge on various factors involved in AD etiology. Among them, disturbances of protein-degrading pathways have been implicated as key pathological mechanisms. These new findings have allowed us to improve the accuracy of disease diagnosis and to find novel potential therapeutic targets to develop disease-modifying drugs. The scope of this Special Issue is thus to explore the recent findings on the fundamental cellular signaling, biological factors involved in dysfunctions, and novel treatments for AD and ADRD.

Dr. Kunie Ando
Prof. Dr. Jean-Pierre Brion
Guest Editors

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Keywords

  • Alzheimer’s disease
  • neurodegenerative diseases
  • tau
  • amyloid
  • inflammation
  • disease modifying treatments
  • biomarkers
  • genetic variants
  • risk factors
  • mechanisms
  • protein–protein interactions
  • post-translational modifications

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Published Papers (1 paper)

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Research

20 pages, 4537 KiB  
Article
Dysregulation of Inositol Polyphosphate 5-Phosphatase OCRL in Alzheimer’s Disease: Implications for Autophagy Dysfunction
by Kunie Ando, May Thazin Htut, Eugenia Maria Antonelli, Andreea-Claudia Kosa, Lidia Lopez-Gutierrez, Carolina Quintanilla-Sánchez, Emmanuel Aydin, Emilie Doeraene, Siranjeevi Nagaraj, Ana Raquel Ramos, Katia Coulonval, Pierre P. Roger, Jean-Pierre Brion and Karelle Leroy
Int. J. Mol. Sci. 2025, 26(12), 5827; https://doi.org/10.3390/ijms26125827 - 18 Jun 2025
Viewed by 353
Abstract
Autophagy is impaired in Alzheimer’s disease (AD), particularly at the stage of autophagosome–lysosome fusion. Recent studies suggest that the inositol polyphosphate 5-phosphatase OCRL (Lowe oculocerebrorenal syndrome protein) is involved in this fusion process; however, its role in AD pathophysiology remains largely unclear. In [...] Read more.
Autophagy is impaired in Alzheimer’s disease (AD), particularly at the stage of autophagosome–lysosome fusion. Recent studies suggest that the inositol polyphosphate 5-phosphatase OCRL (Lowe oculocerebrorenal syndrome protein) is involved in this fusion process; however, its role in AD pathophysiology remains largely unclear. In this study, we investigated the localization and expression of OCRL in post-mortem AD brains and in a 5XFAD transgenic mouse model. While OCRL RNA levels were not significantly altered, OCRL protein was markedly reduced in the RIPA-soluble fraction and positively correlated with the autophagy marker Beclin1. Immunohistochemical analysis revealed OCRL immunoreactivity in neuronal cytoplasm, granulovacuolar degeneration bodies, and plaque-associated dystrophic neurites in AD brains. Furthermore, OCRL overexpression in a FRET-based tau biosensor cell model significantly reduced the tau-seeding-induced FRET signal. These findings suggest that OCRL dysregulation may contribute to autophagic deficits and the progression of tau pathology in AD. Full article
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