期刊
ALZHEIMERS & DEMENTIA
卷 13, 期 6, 页码 663-673出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jalz.2016.10.005
关键词
Alzheimer's disease; eQTL; TREM2; TREML1; Regulatory variant
资金
- Alzheimer's Association (MNIRGD)
- Mayo Alzheimer's Disease Research Center [P50 AG0016574]
- National Institute on Aging [R01 AG025711, AG017216, AG003949, R01 AG032990, R01 AG018023, U01 AG046139]
- National Institute of Neurological Disorders and Stroke [R01 NS080820]
- Alzheimers Research UK [ARUK-TRFUS2012-1] Funding Source: researchfish
Introduction: We hypothesized that common Alzheimer's disease (AD)-associated variants within the triggering receptor expressed on myeloid (TREM) gene cluster influence disease through gene expression. Methods: Expression microarrays on temporal cortex and cerebellum from similar to 400 neuropathologically diagnosed subjects and two independent RNAseq replication cohorts were used for expression quantitative trait locus analysis. Results: A variant within a DNase hypersensitive site 50 of TREM2, rs9357347-C, associates with reduced AD risk and increased TREML1 and TREM2 levels (uncorrected P = 6.3 x 10(-3) and 4.6 x 10(-2), respectively). Meta-analysis on expression quantitative trait locus results from three independent data sets (n = 1006) confirmed these associations (uncorrected P x 3.4 x 10(-2) and 3.5 x 10(-3), Bonferroni-corrected P = 6.7 x 10(-2) and 7.1 x 10(-3), respectively). Discussion: Our findings point to rs9357347 as a functional regulatory variant that contributes to a protective effect observed at the TREM locus in the International Genomics of Alzheimer's Project genome-wide association study meta-analysis and suggest concomitant increase in TREML1 and TREM2 brain levels as a potential mechanism for protection from AD. (C) 2016 the Alzheimer's Association. Published by Elsevier Inc. All rights reserved.
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