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Mechanism of Cellular Signaling, Dysfunction, and Drug Effects on Alzheimer's Disease

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: closed (20 March 2026) | Viewed by 3613

Special Issue Editor

Department of Cellular and Molecular Biology, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mureș, Str. Gheorghe Marinescu nr. 38, Târgu Mureș, 540142 Mureș, Romania
Interests: Alzheimer's disease
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Special Issue Information

Dear Colleagues,

The pathogenesis of Alzheimer's Disease (AD) remains not completely understood to this day. This is thought to be one important reason as to why no present therapy is able to cure or stop the progression of this disease. Several different pathways are considered as important players in the initiation and/or progression of the disease; the currently most accepted theory is the cascade of pathological mechanisms initiated by soluble or fibrillar forms of Abeta, including increased inflammation, mitochondrial failure, disruption of Ca++ and protein homeostasis, and alterations or loss of synapses, among others. Considering the complexity of AD and the failure or only very limited clinical effects of most single-targeted therapies, it seems to be essential (1) to elucidate further details of and connections to the intricate cellular and molecular mechanisms involved in the pathophysiology of AD and (2) to strive in advancing future therapeutic approaches that target several pathogenic factors of the disease in a stage-dependent manner as much as possible.

This Special Issue by IJMS primarily encourages original research articles and short communications that expand on existing and also present new perspectives and molecular information of the pathophysiology of AD for a more profound understanding of this disease, and/or those which explore therapeutic strategies within the field of neurodegeneration. Review articles covering the most recent discoveries in this area are also welcome.

Dr. Eva Kiss
Guest Editor

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Keywords

  • AD
  • targeted therapy
  • Alzheimer's disease
  • neurodegenerative disease
  • tau protein

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Published Papers (1 paper)

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Review

25 pages, 2946 KB  
Review
Potential Role of Membrane Contact Sites in the Dysregulation of the Crosstalk Between Mitochondria and Lysosomes in Alzheimer’s Disease
by Giulia Girolimetti, Matteo Calcagnile and Cecilia Bucci
Int. J. Mol. Sci. 2025, 26(20), 9858; https://doi.org/10.3390/ijms26209858 - 10 Oct 2025
Cited by 3 | Viewed by 3124
Abstract
Alzheimer’s disease (AD) is a neurodegenerative disorder characterized by a gradual decline in cognitive abilities and a progressive loss of the neuronal system resulting from neuronal damage and death. The maintenance of neuronal homeostasis is intricately connected to the crosstalk and balance among [...] Read more.
Alzheimer’s disease (AD) is a neurodegenerative disorder characterized by a gradual decline in cognitive abilities and a progressive loss of the neuronal system resulting from neuronal damage and death. The maintenance of neuronal homeostasis is intricately connected to the crosstalk and balance among organelles. Indeed, intracellular organelles are not just isolated compartments in the cell; instead, they are interdependent structures that can communicate through membrane contact sites (MCSs), forming physical connection points represented by proteinaceous tethers. Mitochondria and lysosomes have fundamental physiological functions within neurons, and accumulating evidence highlights their dysfunctions as AD features, strongly associated with the neurodegenerative process underlying the development and progression of AD. This review explores mitochondria-lysosome communication through MCSs, the tethering proteins and their functions in the cell, discussing the methodological challenges in measuring the structure and dynamics of contacts, and the potential role of altered mitochondria-lysosome communication in the context of organelle dysfunction related to neuron impairment in AD pathogenesis. The different abundance of the tethering proteins was considered in healthy physiological and in AD-related conditions to assess the possible organelle communication dysregulation and the subsequent cellular function alterations, and to evaluate the role of mitochondria-lysosome MCSs in the pathogenesis of this disorder. Full article
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