Sonic hedgehog (Shh) regulates the expression of angiogenic growth factors in oxygen-glucose-deprived astrocytes by mediating the nuclear receptor NR2F2.

Abstract:

:Sonic hedgehog (Shh) has been found to regulate the angiogenic growth factor such as VEGF, Ang-1, and Ang-2 during ischemic insults, but the underlying mechanism is not fully understood. In this study, we employed oxygen-glucose deprivation (OGD) in astrocytes to mimic the ischemia in vitro. We found that OGD could induce the expressions of VEGF, Ang-1, and Ang-2, with the expression of Shh signaling components increased. Moreover, inhibiting the Shh signaling pathway with 5EI, a specific antibody, could decrease the expressions of VEGF, Ang-1, and Ang-2. Furthermore, the administration of exogenous Shh could induce the expressions of VEGF, Ang-1, and Ang-2 in astrocytes. The results of silencing Gli-1, or NR2F2, exhibited that exogenous Shh could regulate the expressions of VEGF, Ang-1, and Ang-2 in astrocytes by activating the NR2F2, but not the Gli-1. These results suggested that Shh could regulate the angiogenic growth factor after ischemic insults in astrocytes, and the regulation was partially mediated by the NR2F2.

journal_name

Mol Neurobiol

journal_title

Molecular neurobiology

authors

Li Y,Xia Y,Wang Y,Mao L,Gao Y,He Q,Huang M,Chen S,Hu B

doi

10.1007/s12035-013-8395-9

subject

Has Abstract

pub_date

2013-06-01 00:00:00

pages

967-75

issue

3

eissn

0893-7648

issn

1559-1182

journal_volume

47

pub_type

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