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Article

Apelin/APJ signaling promotes hypoxia‑induced proliferation of endothelial progenitor cells via phosphoinositide‑3 kinase/Akt signaling

  • Authors:
    • Jingchang Zhang
    • Qiming Liu
    • Xinqun Hu
    • Zhenfei Fang
    • Feng Huang
    • Liang Tang
    • Shenghua Zhou
  • View Affiliations / Copyright

    Affiliations: Department of Cardiology, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China, Department of Cardiology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
  • Pages: 3829-3834
    |
    Published online on: May 27, 2015
       https://doi.org/10.3892/mmr.2015.3866
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Abstract

Endothelial progenitor cells (EPCs) can adhere to the endothelium at sites of hypoxia/ischemia and participate in the formation of novel vessels through differentiating into endothelial cells (ECs). Apelin is an endogenous ligand for the G protein‑coupled receptor APJ, and apelin/APJ signaling has a role in cardiovascular function. The present study aimed to investigate the role of apelin/APJ signaling in the regulation of EPC proliferation under hypoxia. The results showed that hypoxia was able to induce EPC proliferation, accompanied with an upregulation of hypoxia‑inducible factor (HIF)‑1α as well as apelin/APJ signaling. Further investigation indicated that siRNA‑mediated knockdown of apelin or APJ expression attenuated the hypoxia‑induced proliferation of EPCs, suggesting that apelin/APJ signaling has an important role in hypoxia‑induced EPC proliferation. Moreover, the phosphoinositide‑3 kinase (PI3K)/Akt signaling pathway was found to be involved in the apelin/APJ‑mediated EPC proliferation under hypoxia. Based on these findings, the present study suggested that hypoxia‑induced upregulation of HIF‑1α promotes the expression of apelin and APJ, which further activate the downstream PI3K/Akt signaling pathway, a key promoter of EPC proliferation. In conclusion, the present study highlighted the role of apelin/APJ in the regulation of EPC proliferation, and apelin/APJ may therefore serve as a potential target for the prevention of hypoxic ischemic injury.
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Copy and paste a formatted citation
Spandidos Publications style
Zhang J, Liu Q, Hu X, Fang Z, Huang F, Tang L and Zhou S: Apelin/APJ signaling promotes hypoxia‑induced proliferation of endothelial progenitor cells via phosphoinositide‑3 kinase/Akt signaling. Mol Med Rep 12: 3829-3834, 2015.
APA
Zhang, J., Liu, Q., Hu, X., Fang, Z., Huang, F., Tang, L., & Zhou, S. (2015). Apelin/APJ signaling promotes hypoxia‑induced proliferation of endothelial progenitor cells via phosphoinositide‑3 kinase/Akt signaling. Molecular Medicine Reports, 12, 3829-3834. https://doi.org/10.3892/mmr.2015.3866
MLA
Zhang, J., Liu, Q., Hu, X., Fang, Z., Huang, F., Tang, L., Zhou, S."Apelin/APJ signaling promotes hypoxia‑induced proliferation of endothelial progenitor cells via phosphoinositide‑3 kinase/Akt signaling". Molecular Medicine Reports 12.3 (2015): 3829-3834.
Chicago
Zhang, J., Liu, Q., Hu, X., Fang, Z., Huang, F., Tang, L., Zhou, S."Apelin/APJ signaling promotes hypoxia‑induced proliferation of endothelial progenitor cells via phosphoinositide‑3 kinase/Akt signaling". Molecular Medicine Reports 12, no. 3 (2015): 3829-3834. https://doi.org/10.3892/mmr.2015.3866
Copy and paste a formatted citation
x
Spandidos Publications style
Zhang J, Liu Q, Hu X, Fang Z, Huang F, Tang L and Zhou S: Apelin/APJ signaling promotes hypoxia‑induced proliferation of endothelial progenitor cells via phosphoinositide‑3 kinase/Akt signaling. Mol Med Rep 12: 3829-3834, 2015.
APA
Zhang, J., Liu, Q., Hu, X., Fang, Z., Huang, F., Tang, L., & Zhou, S. (2015). Apelin/APJ signaling promotes hypoxia‑induced proliferation of endothelial progenitor cells via phosphoinositide‑3 kinase/Akt signaling. Molecular Medicine Reports, 12, 3829-3834. https://doi.org/10.3892/mmr.2015.3866
MLA
Zhang, J., Liu, Q., Hu, X., Fang, Z., Huang, F., Tang, L., Zhou, S."Apelin/APJ signaling promotes hypoxia‑induced proliferation of endothelial progenitor cells via phosphoinositide‑3 kinase/Akt signaling". Molecular Medicine Reports 12.3 (2015): 3829-3834.
Chicago
Zhang, J., Liu, Q., Hu, X., Fang, Z., Huang, F., Tang, L., Zhou, S."Apelin/APJ signaling promotes hypoxia‑induced proliferation of endothelial progenitor cells via phosphoinositide‑3 kinase/Akt signaling". Molecular Medicine Reports 12, no. 3 (2015): 3829-3834. https://doi.org/10.3892/mmr.2015.3866
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