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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Biol+Open
2017 ; 6
(3
): 370-380
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Mutual interaction between endothelial cells and mural cells enhances BMP9
signaling in endothelial cells
#MMPMID28298363
Tachida Y
; Izumi N
; Sakurai T
; Kobayashi H
Biol Open
2017[Mar]; 6
(3
): 370-380
PMID28298363
show ga
Hereditary hemorrhagic telangiectasia is characterized by the formation of
abnormal vascular networks and caused by the mutation of genes involved in BMP9
signaling. It is also known that the interaction between endothelial cells (ECs)
and mural cells (MCs) is critical to maintain vessel integrity. However, it has
not yet fully been uncovered whether the EC-MC interaction affects BMP9 signaling
or not. To elucidate this point, we analyzed BMP9 signaling in a co-culture of
several types of human primary culture ECs and MCs. The co-culture activated the
Notch pathway in both types of cells in a co-culture- and BMP9-dependent manner.
In HUVECs, the genes induced by BMP9 were significantly and synergistically
induced in the presence of pericytes, fibroblasts or mesenchymal stem cells. The
synergistic induction was greatly reduced in a non-contact condition. In
fibroblasts, PDGFRB expression was potently induced in the presence of HUVECs,
and BMP9 additively increased this response. Taken together, these results
suggest that the EC-MC interaction potentiates BMP9 signaling both in ECs and MCs
and plays a critical role in the maintenance of proper vessel functions.