中国神经再生研究(英文版) ›› 2025, Vol. 20 ›› Issue (11): 3221-3222.doi: 10.4103/NRR.NRR-D-24-00658

• 观点:退行性病与再生 • 上一篇    下一篇

蛋白质稳态失调:衰老与阿尔茨海默病的交集

  

  • 出版日期:2025-11-15 发布日期:2025-02-23

Proteostasis failure: at the intersection between aging and Alzheimer’s disease

Natalia Poblete, Claudio Hetz*   

  1. Center for Geroscience, Brain Health and Metabolism, Santiago, Chile (Poblete N, Hetz C) Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile (Poblete N, Hetz C) Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile (Poblete N, Hetz C) Buck Institute for Research on Aging, Novato, CA, USA (Hetz C)
  • Online:2025-11-15 Published:2025-02-23
  • Contact: Claudio Hetz, PhD, chetz@uchile.cl or chetz@buckinstitute.org.
  • Supported by:
    This work was funded by U.S. Air Force Office of Scientific Research FA9550-21-1-0096, FONDAP program 15150012, ANID/FONDEF ID1ID22I10120, FONDECY/ANID 1220573 and the US Army Medical Research Acquisition Activity (USAMRAA) project number AL2201415; DoD Award HT9425-23-1- 0990, AL220141 (to CH).

摘要: https://orcid.org/0000-0003-1120-7966 (Claudio Hetz)

Abstract: Lifestyle and demographics of the world’s population are causing serious health problems impacting the brain, increasing the incidence of Alzheimer’s disease (AD) and other types of dementia. Although we have gained important insights into the pathogenic mechanisms of AD, only palliative care is available to patients. AD is characterized by the abnormal deposition of protein aggregates in the brain formed by amyloid β and hyper-phosphorylated, Tau in addition to neuroinflammation. The current failure to treat neurodegenerative diseases underlies the fact that the brain is highly plastic and clinical symptoms are manifested when extensive brain damage has progressed. Thus, new concepts need to be tested to develop preventive strategies that extend healthspan. For half of a century, biomedicine has focused on disease as a means to understand health, developing approaches to target pathogenic features. But health is not simply the absence of disease. It is an active process that enables the organism to cope with intrinsic and extrinsic changes (López-Otín and Kroemer, 2021). Thus, a sensible strategy should focus on extending brain healthspan to prevent disease, by improving synaptic function and connectivity, the initial pathological targets, before neurodegeneration and irreversible brain damage have occurred. The decay in the buffering capacity of the proteostasis network has been pointed out as a primary hallmark of aging (Kaushik and Cuervo, 2015), a phenomenon that may contribute to AD pathogenesis. Strategies to improve proteostasis have been tested in multiple models of neurodegenerative diseases, observing outstanding protective effects. The current challenge is to move forward those interventions into suitable strategies that can be tested in the clinic. Because proteostasis is essential to the normal functions of many organs, it is predicted that the chronic administration of small molecules to target proteostasis may have adverse effects in the long term. Gene therapy is emerging as an alternative because specific brain regions can be targeted locally without affecting the function of other organs. We recently tested a gene therapy strategy to improve proteostasis by artificially enhancing the repair programs to improve proteostasis in the context of AD. Our results indicated outstanding effects in improving cognition and reducing amyloid-β plaques in models of AD (Duran-Aniotz et al., 2023).