Open Access

Platelet‑derived growth factor‑BB promotes proliferation and migration of retinal microvascular pericytes by up‑regulating the expression of C‑X‑C chemokine receptor types 4

  • Authors:
    • Dan‑Ni Xiang
    • Yi‑Fan Feng
    • Jing Wang
    • Xi Zhang
    • Jing‑Jing Shen
    • Rong Zou
    • Yuan‑Zhi Yuan
  • View Affiliations

  • Published online on: September 17, 2019     https://doi.org/10.3892/etm.2019.8016
  • Pages: 4022-4030
  • Copyright: © Xiang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Stromal cell‑derived growth factor (SDF)‑1α acts as a ligand to C‑X‑C chemokine receptors 4 (CXCR4) and 7 (CXCR7), which are involved in the formation of choroidal neovascularization. Previous studies have demonstrated crosstalk between the platelet‑derived growth factor (PDGF)‑BB/PDGF receptor (PDGFR)‑β and SDF‑1α/CXCR4 axes during tumor neovascularization by increasing the recruitment of pericytes. However, the effects of interactions between these two signaling pathways in retinal microvascular pericytes remain poorly understood. Western blotting and reverse transcription‑quantitative PCR were used to measure CXCR4 and CXCR7 expression in PDGF‑BB‑treated pericytes, whilst Cell Counting Kit‑8 and Transwell migration assays were used to investigate cell viability and migration following PDGF‑BB pretreatment on SDF‑1α‑treated pericytes. Exogenous PDGF‑BB enhanced CXCR4 and CXCR7 expression through PDGFR‑β in a dose‑ and time‑dependent manners. In addition, PDGF‑BB increased cell viability and migration in SDF‑1α‑treated pericytes, which were inhibited by AMD3100 and niclosamide, inhibitors for CXCR4 and STAT3 respectively. Crosstalk between PDGF‑BB/PDGFR‑β and SDF‑1α/CXCR4/CXCR7 were involved in the JAK2/STAT3 signaling pathway. PDGF‑BB treatment enhanced CXCR4, CXCR7 and PDGFR‑βexpression, which may be associated with the phosphorylation of STAT3. siRNA‑PDGFR‑β transfection reduced CXCR4 and CXCR7 expression in pericytes. Therefore, PDGF‑BB directly targets PDGFR‑β and serves an important role in regulating CXCR4 and CXCR7 expression, ultimately affecting viability and migration in SDF‑1α‑treated pericytes. Therefore, targeting CXCR4/CXCR7 may serve as a potential therapeutic strategy for fundus diseases.
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November-2019
Volume 18 Issue 5

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

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Spandidos Publications style
Xiang DN, Feng YF, Wang J, Zhang X, Shen JJ, Zou R and Yuan YZ: Platelet‑derived growth factor‑BB promotes proliferation and migration of retinal microvascular pericytes by up‑regulating the expression of C‑X‑C chemokine receptor types 4. Exp Ther Med 18: 4022-4030, 2019
APA
Xiang, D., Feng, Y., Wang, J., Zhang, X., Shen, J., Zou, R., & Yuan, Y. (2019). Platelet‑derived growth factor‑BB promotes proliferation and migration of retinal microvascular pericytes by up‑regulating the expression of C‑X‑C chemokine receptor types 4. Experimental and Therapeutic Medicine, 18, 4022-4030. https://doi.org/10.3892/etm.2019.8016
MLA
Xiang, D., Feng, Y., Wang, J., Zhang, X., Shen, J., Zou, R., Yuan, Y."Platelet‑derived growth factor‑BB promotes proliferation and migration of retinal microvascular pericytes by up‑regulating the expression of C‑X‑C chemokine receptor types 4". Experimental and Therapeutic Medicine 18.5 (2019): 4022-4030.
Chicago
Xiang, D., Feng, Y., Wang, J., Zhang, X., Shen, J., Zou, R., Yuan, Y."Platelet‑derived growth factor‑BB promotes proliferation and migration of retinal microvascular pericytes by up‑regulating the expression of C‑X‑C chemokine receptor types 4". Experimental and Therapeutic Medicine 18, no. 5 (2019): 4022-4030. https://doi.org/10.3892/etm.2019.8016