Changes in the detergent-insoluble brain proteome linked to amyloid and tau in Alzheimer's Disease progression

Chadwick M. Hales, Eric B. Dammer, Qiudong Deng, Duc M. Duong, Marla Gearing, Juan C Troncoso, Madhav Thambisetty, James J. Lah, Joshua M. Shulman, Allan I. Levey, Nicholas T. Seyfried

Research output: Contribution to journalArticle

Abstract

Despite a key role of amyloid-beta (Aβ) in Alzheimer's disease (AD), mechanisms that link Aβ plaques to tau neurofibrillary tangles and cognitive decline still remain poorly understood. The purpose of this study was to quantify proteins in the sarkosyl-insoluble brain proteome correlated with Aβ and tau insolubility in the asymptomatic phase of AD (AsymAD) and through mild cognitive impairment (MCI) and symptomatic AD. Employing label-free mass spectrometry-based proteomics, we quantified 2711 sarkosyl-insoluble proteins across the prefrontal cortex from 35 individual cases representing control, AsymAD, MCI and AD. Significant enrichment of Aβ and tau in AD was observed, which correlated with neuropathological measurements of plaque and tau tangle density, respectively. Pairwise correlation coefficients were also determined for all quantified proteins to Aβ and tau, across the 35 cases. Notably, six of the ten most correlated proteins to Aβ were U1 small nuclear ribonucleoproteins (U1 snRNPs). Three of these U1 snRNPs (U1A, SmD and U1-70K) also correlated with tau consistent with their association with tangle pathology in AD. Thus, proteins that cross-correlate with both Aβ and tau, including specific U1 snRNPs, may have potential mechanistic roles in linking Aβ plaques to tau tangle pathology during AD progression.

Original languageEnglish (US)
Pages (from-to)3042-3053
Number of pages12
JournalProteomics
Volume16
Issue number23
DOIs
StatePublished - Dec 1 2016

Fingerprint

Proteome
Amyloid
Detergents
Disease Progression
Brain
Alzheimer Disease
U1 Small Nuclear Ribonucleoproteins
Pathology
Proteins
Neurofibrillary Tangles
Phase control
Prefrontal Cortex
Proteomics
Mass spectrometry
Labels
Mass Spectrometry
Solubility
Association reactions
Cognitive Dysfunction

Keywords

  • Aggregation
  • Biomedicine
  • Mass spectrometry
  • Neurodegeneration
  • Proteostasis
  • Spliceosome

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology

Cite this

Hales, C. M., Dammer, E. B., Deng, Q., Duong, D. M., Gearing, M., Troncoso, J. C., ... Seyfried, N. T. (2016). Changes in the detergent-insoluble brain proteome linked to amyloid and tau in Alzheimer's Disease progression. Proteomics, 16(23), 3042-3053. https://doi.org/10.1002/pmic.201600057

Changes in the detergent-insoluble brain proteome linked to amyloid and tau in Alzheimer's Disease progression. / Hales, Chadwick M.; Dammer, Eric B.; Deng, Qiudong; Duong, Duc M.; Gearing, Marla; Troncoso, Juan C; Thambisetty, Madhav; Lah, James J.; Shulman, Joshua M.; Levey, Allan I.; Seyfried, Nicholas T.

In: Proteomics, Vol. 16, No. 23, 01.12.2016, p. 3042-3053.

Research output: Contribution to journalArticle

Hales, CM, Dammer, EB, Deng, Q, Duong, DM, Gearing, M, Troncoso, JC, Thambisetty, M, Lah, JJ, Shulman, JM, Levey, AI & Seyfried, NT 2016, 'Changes in the detergent-insoluble brain proteome linked to amyloid and tau in Alzheimer's Disease progression', Proteomics, vol. 16, no. 23, pp. 3042-3053. https://doi.org/10.1002/pmic.201600057
Hales, Chadwick M. ; Dammer, Eric B. ; Deng, Qiudong ; Duong, Duc M. ; Gearing, Marla ; Troncoso, Juan C ; Thambisetty, Madhav ; Lah, James J. ; Shulman, Joshua M. ; Levey, Allan I. ; Seyfried, Nicholas T. / Changes in the detergent-insoluble brain proteome linked to amyloid and tau in Alzheimer's Disease progression. In: Proteomics. 2016 ; Vol. 16, No. 23. pp. 3042-3053.
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