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Published on: December 26, 2016
Innate Immunity and Cell Death in Alzheimer's Disease
SangJoon Lee1, Hyun-Jeong Cho2, Jin-Hyeob Ryu3,4
1Department of Infection Biology, Faculty of Medicine, 38515University of Tsukuba, Tsukuba, Japan.
Abstract:
The innate immune system plays key roles in controlling Alzheimer's disease (AD), while secreting cytokines to eliminate pathogens and regulating brain homeostasis. Recent research in the field of AD has shown that the innate immune-sensing ability of pattern recognition receptors on brain-resident macrophages, known as microglia, initiates neuroinflammation, Aβ accumulation, neuronal loss, and memory decline in patients with AD. Advancements in understanding the role of innate immunity in AD have laid a strong foundation to elucidate AD pathology and devise therapeutic strategies for AD in the future. In this review, we highlight the present understanding of innate immune responses, inflammasome activation, inflammatory cell death pathways, and cytokine secretion in AD. We also discuss how the AD pathology influences these biological processes.
Insights
The innate immune system, particularly microglia, drives Alzheimer's disease (AD) progression by initiating neuroinflammation and Aβ accumulation. Understanding these immune responses is crucial for developing future AD therapeutics.
Area of Science:
- Neuroimmunology
- Alzheimer's Disease Pathogenesis
Background:
- The innate immune system, including microglia, is vital for brain homeostasis and pathogen defense.
- Microglia's pattern recognition receptors initiate neuroinflammation, contributing to Alzheimer's disease (AD) hallmarks like Aβ accumulation and neuronal loss.
Purpose of the Study:
- To review the current understanding of innate immune responses in Alzheimer's disease.
- To elucidate the roles of inflammasome activation, inflammatory cell death, and cytokine secretion in AD pathology.
Main Methods:
- Literature review of recent advancements in innate immunity and AD research.
- Analysis of the interplay between AD pathology and innate immune processes.
Main Results:
- Innate immune sensing by microglia is a key driver of neuroinflammation and AD progression.
- Inflammasome activation, inflammatory cell death, and cytokine dysregulation are central to AD pathology.
Conclusions:
- Understanding innate immune mechanisms in AD provides a foundation for novel therapeutic strategies.
- Targeting neuroinflammation and related pathways holds promise for future AD treatments.
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