Journal
IRANIAN JOURNAL OF IMMUNOLOGY
Volume 18, Issue 2, Pages 103-110Publisher
SHIRAZ INST CANCER RES
DOI: 10.22034/iji.2021.91214.2059.
Keywords
Angiogenesis; IL-17A; Migration; Tube formation; Vascular Endothelial Cells
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Our findings demonstrate the involvement of HGF, bFGF, VEGF-A and/or CXCL8/IL-8, to various degrees, in migration and microvessel development of vascular endothelial cells mediated by IL-17A.
Background: Interleukin (IL)-17A possesses biological activities to promote vascular endothelial cell migration and microvessel development. Objective: To clarify which angiogenic factors are involved in IL 17A-modified angiogenesis-related functions of vascular endothelial cells including migration and microtube development or not. Methods: The potential contribution of various angiogenic stimulators to in vitro angiogenic activities of IL-17A was assessed with both modified Boyden Chemotaxicell chamber assay and in vitro angiogenesis assay. Results: The addition of a neutralizing antibody (Ab) for hepatocyte growth factor (HGF), basic fibroblast growth factor (bFGF) or vascular endothelial growth factor (VEGF)-A to the upper and lower compartments in a modified Boyden Chemotaxicell chamber significantly attenuated human dermal microvascular endothelial cell (HMVEC) migration elicited by IL-17A. Moreover, IL 17A-induced capillary-like microvessel development in human umbilical vein endothelial cell (HUVEC) and human dermal fibroblast (HDF) co-culture system was significantly impaired by a neutralizing Ab against HGF, bFGF, VEGF-A, cysteine-x-cysteine ligand 8 (CXCL8)/IL-8 or cysteine-x-cysteine (CXC) chemokine receptor (CXCR)-2. Conclusion: Our findings demonstrate the involvement of HGF, bFGF, VEGF-A and/or CXCL8/IL-8, to various degrees, in migration and microvessel development of vascular endothelial cells mediated by IL-17A.
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