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HLA in Alzheimer’s Disease: Genetic Association and Possible Pathogenic Roles

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Abstract

Alzheimer’s disease (AD) is commonly considered as the most prominent dementing disorder globally and is characterized by the deposition of misfolded amyloid-β (Aβ) peptide and the aggregation of neurofibrillary tangles. Immunological disturbances and neuroinflammation, which result from abnormal immunological reactivations, are believed to be the primary stimulating factors triggering AD-like neuropathy. It has been suggested by multiple previous studies that a bunch of AD key influencing factors might be attributed to genes encoding human leukocyte antigen (HLA), whose variety is an essential part of human adaptive immunity. A wide range of activities involved in immune responses may be determined by HLA genes, including inflammation mediated by the immune response, T-cell transendothelial migration, infection, brain development and plasticity in AD pathogenesis, and so on. The goal of this article is to review the recent epidemiological findings of HLA (mainly HLA class I and II) associated with AD and investigate to what extent the genetic variations of HLA were clinically significant as pathogenic factors for AD. Depending on the degree of contribution of HLA in AD pathogenesis, targeted research towards HLA may propel AD therapeutic strategies into a new era of development.

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Acknowledgements

This work was supported by grants from the National Natural Science Foundation of China (81801266), the Shandong Provincial Natural Science Foundation, China (ZR2017BH064), Qilu hygiene and health leading talents cultivation project, the Clinical Medicine+X Project Fund, Medical School of Qingdao University and China, Postdoctoral Science Foundation (2019M662305), and the Qingdao Postdoctoral Application Research Project.

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Correspondence to Zi-Xuan Wang or Qi Wan.

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Wang, ZX., Wan, Q. & Xing, A. HLA in Alzheimer’s Disease: Genetic Association and Possible Pathogenic Roles. Neuromol Med 22, 464–473 (2020). https://doi.org/10.1007/s12017-020-08612-4

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  • DOI: https://doi.org/10.1007/s12017-020-08612-4

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