Open Access

Antagonistic effects of exogenous Slit2 on VEGF‑induced choroidal endothelial cell migration and tube formation

  • Authors:
    • Yanling Tang
    • Xiyuan Zhou
  • View Affiliations

  • Published online on: February 4, 2019     https://doi.org/10.3892/etm.2019.7235
  • Pages: 2443-2450
  • Copyright: © Tang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Vascular endothelial growth factor (VEGF) is involved in the pathogenesis of choroidal neovascularization. The aim of the present study was to assess the effects of exogenous slit guidance ligand 2 (Slit2) on VEGF‑induced choroidal endothelial cell (CEC) migration and tube formation. The protein and mRNA expression levels of Slit2, roundabout guidance receptor (Robo) 1 and Robo4 in CECs were evaluated by immunocytochemistry and reverse transcription‑polymerase chain reaction analyses, respectively. Western blot analysis was used to assess Robo4 protein levels in CECs exposed to increasing concentrations (0, 50, 75, 100, 125 and 150 ng/ml) of exogenous Slit2. The effects of exogenous Slit2 (125 ng/ml) on VEGF‑induced CEC migration and tube formation were also examined. CECs expressed Slit2 and Robo4, but lacked Robo1 expression, at the mRNA and protein levels. Robo4 protein expression increased significantly following treatment with 50‑150 ng/ml exogenous Slit2. No significant difference in Robo4 protein expression was observed in CECs treated with 125 and 150 ng/ml Slit2. VEGF‑induced CEC migration and tube formation were significantly reduced following treatment with 125 ng/ml exogenous Slit2. In conclusion, these results indicate that Robo4 is expressed in CECs. In addition, exogenous Slit2 may regulate Robo4 expression and partially inhibit VEGF‑induced CEC migration and tube formation.
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April-2019
Volume 17 Issue 4

Print ISSN: 1792-0981
Online ISSN:1792-1015

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Spandidos Publications style
Tang Y and Zhou X: Antagonistic effects of exogenous Slit2 on VEGF‑induced choroidal endothelial cell migration and tube formation. Exp Ther Med 17: 2443-2450, 2019.
APA
Tang, Y., & Zhou, X. (2019). Antagonistic effects of exogenous Slit2 on VEGF‑induced choroidal endothelial cell migration and tube formation. Experimental and Therapeutic Medicine, 17, 2443-2450. https://doi.org/10.3892/etm.2019.7235
MLA
Tang, Y., Zhou, X."Antagonistic effects of exogenous Slit2 on VEGF‑induced choroidal endothelial cell migration and tube formation". Experimental and Therapeutic Medicine 17.4 (2019): 2443-2450.
Chicago
Tang, Y., Zhou, X."Antagonistic effects of exogenous Slit2 on VEGF‑induced choroidal endothelial cell migration and tube formation". Experimental and Therapeutic Medicine 17, no. 4 (2019): 2443-2450. https://doi.org/10.3892/etm.2019.7235