Related Experiment Video
Updated: May 11, 2026
07:18
Cell-based Assay to Study Antibody-mediated Tau Clearance by Microglia
Published on: November 9, 2018
Autophagy modulation for Alzheimer's disease therapy
Xi-Chen Zhu1, Jin-Tai Yu, Teng Jiang
1Department of Neurology, Qingdao Municipal Hospital, Nanjing Medical University, Nanjing, China.
Molecular Neurobiology
|April 30, 2013
Summary
Autophagy, a cellular cleanup process, is crucial for neuronal health and may protect against Alzheimer's disease (AD) by clearing toxic proteins. Modulating autophagy presents a potential therapeutic strategy for AD.
Area of Science:
- Cell Biology
- Neuroscience
- Molecular Biology
Background:
- Autophagy is a vital lysosomal degradation pathway essential for cellular quality control.
- It removes aggregated proteins and damaged organelles, maintaining neuronal homeostasis via mTOR-dependent or -independent pathways.
- Defective autophagy is linked to aging and neurodegenerative diseases, particularly Alzheimer's disease (AD).
Purpose of the Study:
- To review the role of autophagy in Alzheimer's disease pathogenesis.
- To explore the potential of autophagy modulation as a therapeutic strategy for AD.
- To summarize recent research on autophagy's neuroprotective mechanisms in AD.
Main Methods:
- Literature review of current studies on autophagy and AD.
- Analysis of molecular pathways (mTOR-dependent and -independent) involved in autophagy induction.
- Examination of autophagy's role in degrading amyloid beta and tau proteins.
Main Results:
- Autophagy plays a neuroprotective role in AD by degrading key pathological proteins like amyloid beta and tau.
- Various molecules can induce autophagy through different pathways, offering potential therapeutic targets.
- Defective autophagy is implicated in the progression of AD.
Conclusions:
- Autophagy modulation is a promising therapeutic avenue for Alzheimer's disease.
- Further research is needed to fully understand and harness autophagy's potential in AD treatment.
- Targeting autophagy pathways could offer novel strategies for managing AD pathology.
Related Concept Videos
01:22Alzheimer's Disease: Treatment
Alzheimer's Disease (AD), a neurodegenerative disorder, is pathologically identified by amyloid plaques and neurofibrillary tangles composed of tau protein. AD pharmacotherapy aims to manage cognitive symptoms, delay disease progression, and treat behavioral symptoms. The treatment is primarily symptomatic and palliative, with no definitive disease-modifying therapy available. Cholinesterase inhibitors, including donepezil (Aricept), rivastigmine (Exelon), and galantamine (Razadyne), are...
01:27Autophagy
Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
01:36Delivery Pathways to the Lysosome
Eukaryotic cells use different mechanisms to eliminate toxic waste obsolete and worn-out substances. Lysosomes play a pivotal role in this, and hence, these substances are carried to the lysosome from other parts of the cell and extracellular space through different pathways. The most elaborately studied pathways to the lysosome are the endocytic pathways.
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
01:23Alzheimer Disease ll: Pathophysiology
Alzheimer disease involves structural changes in the brain that begin long before symptoms appear. The most distinctive features are extracellular neuritic plaques and intracellular neurofibrillary tangles.Neuritic plaques form in the cerebral cortex and around blood vessels. These plaques contain a dense core of beta-amyloid (Aβ)—a toxic protein fragment that clumps outside neurons. The core is surrounded by damaged neuronal extensions, as well as reactive astrocytes and microglia. Abnormal...
01:26Alzheimer's Disease: Overview
Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ and tau...
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ and tau...
01:29Alzheimer Disease l: Introduction
Alzheimer disease is a chronic, progressive, and irreversible neurodegenerative disorder and the most common cause of dementia in older adults. It leads to gradual neuronal loss, causing cognitive decline, behavioral changes, and loss of functional independence.Risk Factors and EtiologyThe disease is multifactorial. Age is the strongest risk factor, with prevalence doubling every 5 years after age 65. Genetic factors include mutations in genes such as APP, PSEN1, and PSEN2, which are associated...