Abstract:
:Reactive microglia clustering around amyloid plaques in brain is a histopathological feature of Alzheimer's disease (AD) and reflects the contribution of neuroinflammation in AD pathogenesis. β-Amyloid peptide (Aβ) has been shown to induce a range of microglial responses including chemotaxis, cytotoxicity and inflammation, but the underlying mechanism is poorly understood. Considering the fundamental role of RhoA/ROCK signaling in cell migration and its broad implication in AD and neuroinflammation, we hypothesized that RhoA/ROCK signaling might be involved in Aβ-induced microglial responses. From in vivo mouse models including APP/PS1 transgene and fibrillar Aβ stereotactic injection, we observed the elevated expression level of RhoA in reactive microglia. Through a series in vitro cell migration, cytotoxicity and biochemistry assays, we found that RhoA/ROCK signaling plays an essential role in Aβ-induced responses of microglial BV2 cells. Small molecular agents Fasudil and Y27632 showed prominent beneficial effects, which implies the therapeutic potential of RhoA/ROCK signaling inhibitors in AD treatment.
journal_name
Cell Mol Neurobioljournal_title
Cellular and molecular neurobiologyauthors
Zhang X,Ye P,Wang D,Liu Y,Cao L,Wang Y,Xu Y,Zhu Cdoi
10.1007/s10571-019-00668-6subject
Has Abstractpub_date
2019-07-01 00:00:00pages
637-650issue
5eissn
0272-4340issn
1573-6830pii
10.1007/s10571-019-00668-6journal_volume
39pub_type
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