Cited by 219Neuroinflammation and Neurodegeneration MechanismsAlzheimer's disease research and treatmentsInflammasome and immune disorders

TREM2, microglia, and Alzheimer’s disease.

Qin, Qi, Teng, Zhaoqian, Liu, Changmei, Li, Qian, Yin, Yunsi, Tang, Yi·2021·Mechanisms of Ageing and Development

Abstract

Triggering receptor expressed on myeloid cells 2 (TREM2) has been suggested to play a crucial role in Alzheimer's disease (AD) pathogenesis, as revealed by genome-wide association studies (GWAS). Since then, rapidly increasing literature related to TREM2 has focused on elucidating its role in AD pathology. In this review, we summarize our understanding of TREM2 biology, explore TREM2 functions in microglia, address the multiple mechanisms of TREM2 in AD, and raise key questions for further investigations to elucidate the detailed roles and molecular mechanisms of TREM2 in microglial responses. A major breakthrough in our understanding of TREM2 is based on our hypothesis suggesting that TREM2 may act as a multifaceted player in microglial functions in AD brain homeostasis. We conclude that TREM2 can not only influence microglial functions in amyloid and tau pathologies but also participate in inflammatory responses and metabolism, acting alone or with other molecules, such as apolipoprotein E (APOE). This review provides novel insight into the broad role of TREM2 in microglial function in AD and enables us to develop new strategies aimed at the immune system to treat AD pathogenesis.

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Crossref · 10.1016/j.mad.2021.111438

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Authors
Qin, Q., Teng, Z., Liu, C., Li, Q., Yin, Y., & Tang, Y.
Affiliations
  • Capital Medical University (CN)
  • Chinese Academy of Sciences (CN)
  • Ministry of Education of the People's Republic of China (CN)
Corresponding author
Tang, Yi
Venue
Mechanisms of Ageing and Development
Publisher
Elsevier BV
Published
2021-04
Volume
195
Pages
111438
ISSN
0047-6374 (ISSN-L)
OpenAlex
W3129189791
Cited by
219
References
46
Citations by year
2026: 35 · 2025: 62 · 2024: 55 · 2023: 30 · 2022: 25 · 2021: 12
FWCI
3.89
Type
journal article
Language
en
Open access
closed
Locations
  • Mechanisms of Ageing and Development (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
Keywords
TREM2, Alzheimer's disease, microglia, amyloid pathology, tau pathology, neuroinflammation, apolipoprotein E, microglial metabolism, brain homeostasis
MeSH terms
Alzheimer Disease, Humans, Membrane Glycoproteins, Receptors, Immunologic, Microglia, Drug Discovery

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