Amyloid-beta 1-40 is associated with alterations in NG2+ pericyte population ex vivo and in vitro
(2018) In Aging Cell 17(3).- Abstract
The population of brain pericytes, a cell type important for vessel stability and blood brain barrier function, has recently been shown altered in patients with Alzheimer's disease (AD). The underlying reason for this alteration is not fully understood, but progressive accumulation of the AD characteristic peptide amyloid-beta (Aβ) has been suggested as a potential culprit. In the current study, we show reduced number of hippocampal NG2+ pericytes and an association between NG2+ pericyte numbers and Aβ1-40 levels in AD patients. We further demonstrate, using in vitro studies, an aggregation-dependent impact of Aβ1-40 on human NG2+ pericytes. Fibril-EP Aβ1-40 exposure reduced pericyte viability and proliferation and increased caspase 3/7... (More)
The population of brain pericytes, a cell type important for vessel stability and blood brain barrier function, has recently been shown altered in patients with Alzheimer's disease (AD). The underlying reason for this alteration is not fully understood, but progressive accumulation of the AD characteristic peptide amyloid-beta (Aβ) has been suggested as a potential culprit. In the current study, we show reduced number of hippocampal NG2+ pericytes and an association between NG2+ pericyte numbers and Aβ1-40 levels in AD patients. We further demonstrate, using in vitro studies, an aggregation-dependent impact of Aβ1-40 on human NG2+ pericytes. Fibril-EP Aβ1-40 exposure reduced pericyte viability and proliferation and increased caspase 3/7 activity. Monomer Aβ1-40 had quite the opposite effect: increased pericyte viability and proliferation and reduced caspase 3/7 activity. Oligomer-EP Aβ1-40 had no impact on either of the cellular events. Our findings add to the growing number of studies suggesting a significant impact on pericytes in the brains of AD patients and suggest different aggregation forms of Aβ1-40 as potential key regulators of the brain pericyte population size.
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- author
- Schultz, Nina LU ; Brännström, Kristoffer ; Byman, Elin LU ; Moussaud, Simon ; Nielsen, Henrietta M ; Olofsson, Anders and Wennström, Malin LU
- author collaboration
- organization
- publishing date
- 2018-02-17
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Aging Cell
- volume
- 17
- issue
- 3
- article number
- e12728
- publisher
- Wiley-Blackwell
- external identifiers
-
- scopus:85042077663
- pmid:29453790
- ISSN
- 1474-9726
- DOI
- 10.1111/acel.12728
- language
- English
- LU publication?
- yes
- id
- e21e45d7-ad1c-4730-913e-c444cb16c9ac
- date added to LUP
- 2018-02-27 11:26:29
- date last changed
- 2024-04-01 01:45:26
@article{e21e45d7-ad1c-4730-913e-c444cb16c9ac,
abstract = {{<p>The population of brain pericytes, a cell type important for vessel stability and blood brain barrier function, has recently been shown altered in patients with Alzheimer's disease (AD). The underlying reason for this alteration is not fully understood, but progressive accumulation of the AD characteristic peptide amyloid-beta (Aβ) has been suggested as a potential culprit. In the current study, we show reduced number of hippocampal NG2+ pericytes and an association between NG2+ pericyte numbers and Aβ1-40 levels in AD patients. We further demonstrate, using in vitro studies, an aggregation-dependent impact of Aβ1-40 on human NG2+ pericytes. Fibril-EP Aβ1-40 exposure reduced pericyte viability and proliferation and increased caspase 3/7 activity. Monomer Aβ1-40 had quite the opposite effect: increased pericyte viability and proliferation and reduced caspase 3/7 activity. Oligomer-EP Aβ1-40 had no impact on either of the cellular events. Our findings add to the growing number of studies suggesting a significant impact on pericytes in the brains of AD patients and suggest different aggregation forms of Aβ1-40 as potential key regulators of the brain pericyte population size.</p>}},
author = {{Schultz, Nina and Brännström, Kristoffer and Byman, Elin and Moussaud, Simon and Nielsen, Henrietta M and Olofsson, Anders and Wennström, Malin}},
issn = {{1474-9726}},
language = {{eng}},
month = {{02}},
number = {{3}},
publisher = {{Wiley-Blackwell}},
series = {{Aging Cell}},
title = {{Amyloid-beta 1-40 is associated with alterations in NG2+ pericyte population ex vivo and in vitro}},
url = {{http://dx.doi.org/10.1111/acel.12728}},
doi = {{10.1111/acel.12728}},
volume = {{17}},
year = {{2018}},
}