PreprintCited by 11

A cortical immune network map identifies a subset of human microglia involved in Tau pathology

Patrick, Ellis, Olah, Marta, Taga, Mariko, Klein, Hans-Ulrich, Xu, Jishu, White, Charles C, Felsky, Daniel, Gaiteri, Chris +6 more·2017

Abstract

Microglial dysfunction has been proposed as one of the many cellular mechanisms that can contribute to the development of Alzheimer's disease (AD). Here, using a transcriptional network map of the human frontal cortex, we identify five gene modules of co-expressed genes related to microglia and assess their role in the neuropathologic features of AD in 541 subjects from two cohort studies of brain aging. Two of these transcriptional programs – modules 113 and 114 – relate to the accumulation of β-amyloid, while module 5 relates to tau pathology. These modules are also detectable in the human brain's epigenome, where we replicate these associations. In terms of tau, we propose that module 5, a marker of activated microglia, may lead to tau accumulation and subsequent cognitive decline. We validate our model further by showing that VASP , a representative module 5 gene, encodes a protein that is upregulated in activated microglia in AD.

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  • One microglial transcriptional program in the aging dorsolateral prefrontal cortex contributes to the accumulation of tau pathology, while two others may relate to β-amyloid pathology.

    “we observed that one microglial transcriptional program in the aging dorsolateral prefrontal cortex (DLPFC) contributes to the accumulation of tau pathology while two others may relate to β-amyloid pathology6”

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Authors
Patrick, E., Olah, M., Taga, M., Klein, H.-U., Xu, J., White, C. C., Felsky, D., Gaiteri, C., Chibnik, L. B., Mostafavi, S., Schneider, J. A., Bennett, D. A., Bradshaw, E. M., & De Jager, P. L.
Publisher
openRxiv
Published
2017-12-14
Cited by
11
References
6
Type
Preprint

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