当前位置： SCI文献检索 > CELLULAR SIGNALLING期刊下所有文献 > Fibronectin and vitronectin induce AP-1-mediated matrix metalloproteinase-9 expression through integrin α(5)β(1)/α(v)β(3)-dependent Akt, ERK and JNK signaling pathways in human umbilical vein endothelial cells.

Fibronectin and vitronectin induce AP-1-mediated matrix metalloproteinase-9 expression through integrin α(5)β(1)/α(v)β(3)-dependent Akt, ERK and JNK signaling pathways in human umbilical vein endothelial cells.

Abstract：

:The activity of matrix metalloproteinases (MMPs), which selectively degrades the extracellular matrix (ECM), is critical in angiogenesis. Conversely, changes in ECM composition/structure alter the expression and activity of MMPs in various cell types. In the present study, we examined whether changes in ECM composition affect MMPs expression/activity of endothelial cells and thereby alter the surrounding ECM structure. Among the ECM molecules examined, fibronectin (FN) and vitronectin (VN) increased the expression and activity of MMP-9 in human umbilical vein endothelial cells (HUVECs). Both α(5)β(1) and α(v)β(3) integrins were involved in FN-induced MMP-9 expression. Also, FN-induced MMP-9 expression was found to be mediated by AP-1 transcription factors, including c-Jun, JunB, and JunD. Inhibitors or siRNAs specific to AP-1 activating signal transducers, including FAK-Src, PI3K/Akt, ERK, and JNK, abolished both FN-induced AP-1 activation and MMP-9 expression. VN-induced AP-1 activation and MMP-9 expression were also mediated by these AP-1 activating signal transducers in addition to p38 MAPK. Moreover, treatment with FN or VN resulted in increased degradation of collagen on HUVEC culture plates. Taken together, our data suggest that both fibronectin and vitronectin induce MMP-9 expression via the AP-1-activating signaling pathways in endothelial cells, and thereby stimulate degradation of surrounding collagen, leading to alterations in ECM structure and potentially the promotion of angiogenesis.

journal_name

Cell Signal

journal_title

Cellular signalling

authors

Jin YJ,Park I,Hong IK,Byun HJ,Choi J,Kim YM,Lee H

doi

10.1016/j.cellsig.2010.08.012

subject

Has Abstract

pub_date

2011-01-01 00:00:00

pages

125-34

issue

1

eissn

0898-6568

issn

1873-3913

pii

S0898-6568(10)00239-1

journal_volume

23

pub_type

杂志文章

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