Beneficial effects of the Src inhibitor, dasatinib, on breakdown of the blood-retinal barrier
- Authors
- Kim, So Ra; Suh, Wonhee
- Issue Date
- Feb-2017
- Publisher
- PHARMACEUTICAL SOC KOREA
- Keywords
- Dasatinib; Diabetes; Blood retinal barrier; Leakage
- Citation
- ARCHIVES OF PHARMACAL RESEARCH, v.40, no.2, pp 197 - 203
- Pages
- 7
- Journal Title
- ARCHIVES OF PHARMACAL RESEARCH
- Volume
- 40
- Number
- 2
- Start Page
- 197
- End Page
- 203
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/4880
- DOI
- 10.1007/s12272-016-0872-z
- ISSN
- 0253-6269
1976-3786
- Abstract
- Src kinase signaling is important in the regulation of microvascular barrier function and endothelial hyperpermeability. This study was designed to evaluate the protective effect of dasatinib, a potent Src inhibitor used clinically for the treatment of cancer, against the breakdown of the blood-retinal barrier (BRB) and the retinal vascular leakage caused by vascular endothelial growth factor (VEGF) and diabetes. We examined the effects of dasatinib on VEGF-induced endothelial hyperpermeability and the loss of vascular endothelial (VE)-cadherin, an endothelial junctional protein. Dasatinib inhibited VEGF-induced phosphorylation of Src in human retinal microvascular endothelial cells (HRMECs). In vitro and in vivo vascular permeability assays showed that dasatinib blocked the VEGF-enhanced hyperpermeability of HRMECs and decreased VEGF-mediated retinal vascular leakage in mice. Immunofluorescent staining of VE-cadherin showed that dasatinib abolished the junctional disappearance of VE-cadherin in VEGF-treated HRMECs and murine retinal vasculature. In addition, we examined the protective effect of dasatinib against diabetes-induced retinal vascular leakage in streptozotocin-induced diabetic rats. An intravitreal injection of dasatinib substantially inhibited the development of hyperpermeable retinal vasculature. Our results indicate that dasatinib is a promising agent for the prevention and treatment of diabetes-induced retinal vascular leakage.
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