Laminar shear stress induces the expression of aquaporin 1 in endothelial cells involved in wound healing.

Gyeong In Mun, Sue Im Jang, Yong Chool Boo

Department of Molecular Medicine, Cell and Matrix Research Institute, BK21 Medical Education Program for Human Resources, Kyungpook National University School of Medicine, Daegu 700-422, Republic of Korea.

Biochemical and biophysical research communications 2013 Jan 11

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Laminar shear stress (LSS) due to blood flow contributes to the maintenance of endothelial health by multiple mechanisms including promotion of wound healing. The present study examined the hypothesis that the induction of water channel aquaporin 1 (AQP1) expression by LSS might be functionally associated with endothelial wound healing. When human umbilical vein endothelial cells were exposed to LSS at 12 dyn cm(-2) for 24h, significant increases in AQP1 expression were observed at the mRNA and protein levels as compared with static control. In the in vitro scratch wound healing assay, LSS treatments before and after wound creation enhanced endothelial wound healing and this effect was significantly attenuated by selective suppression of AQP1 expression using small interfering RNA. Ectopic expression of AQP1 enhanced wound healing in the absence of LSS. This study demonstrated that LSS stimulates the endothelial expression of AQP1 that plays a role in wound healing. Copyright © 2012 Elsevier Inc. All rights reserved.

Citation

Gyeong In Mun, Sue Im Jang, Yong Chool Boo. Laminar shear stress induces the expression of aquaporin 1 in endothelial cells involved in wound healing. Biochemical and biophysical research communications. 2013 Jan 11;430(2):554-9