Abstract
Human umbilical cord vascular endothelial cells (HUVECs) cultured without serum and fibroblast growth factor-2 is an in vitro model of ischemic conditions. Our previous study showed that ethyl 3-(o-chlorophenyl)-5-methyl-1-phenyl-1H-pyrazole-4-carboxylate (MPD) could inhibit apoptosis of HUVECs in this model. In this study, we investigated the effect of MPD on angiogenesis and the possible mechanisms. Capillary-like tube formation assay on Matrigel and cell migration assay were performed to investigate the effect of MPD on angiogenesis. The reactive oxygen species (ROS) and interferon-inducible protein 10 (IP-10) levels were respectively evaluated by intracellular ROS assay and western blot analysis. MPD at 5 and 10 μM promoted vascular structure formation and HUVEC migration in an in vitro ischemic model. MPD promoted angiogenesis through elevating ROS levels and depressing IP-10 level. ROS seemed to be necessary for angiogenesis, and a high level of IP-10 inhibited angiogenesis in ischemic state. ROS provide clues for seeking new key factors involved in angiogenesis. IP-10 may become a new target for future therapeutic intervention. MPD is a good tool for investigating the mechanism of angiogenesis, and MPD might be useful in the development of new drugs in therapy of ischemic diseases.
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Abbreviations
- PAOD:
-
Peripheral arterial occlusive disease
- VECs:
-
Vascular endothelial cells
- MPD:
-
Ethyl 3-(o-chlorophenyl)-5-methyl-1-phenyl-1H-pyrazole-4-carboxylate
- FGF-2:
-
Fibroblast growth factor-2
- ROS:
-
Reactive oxygen species
- IP-10:
-
Interferon-inducible protein 10
- HUVECs:
-
Human umbilical vein endothelial cells
- FBS:
-
Fetal bovine serum
- DMSO:
-
Dimethyl sulfoxide
- NIH:
-
National Institutes of Health
- DCHF:
-
2’,7’-Dichlorodihydrofluorescein
- DCF:
-
2’,7’-Dichlorofluorescein
- HRP:
-
Horseradish peroxidase
- VEGF:
-
Vascular endothelial growth factor
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Acknowledgments
This work was financially supported by the National 973 Research Project (No. 2006CB503803) and National Natural Science Foundation of China (No. 90813022) and the science and technology developmental project of Shandong Province (2008GG10002034 and 2007GG20002004).
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Maohua Wang and Jingyong Zhang contributed equally to this work.
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Wang, M., Zhang, J., Wu, X. et al. Discovery of a pyrazole derivative promoting angiogenesis through modulating reactive oxygen species and interferon-inducible protein 10 levels. Mol Biol Rep 38, 1491–1497 (2011). https://doi.org/10.1007/s11033-010-0256-2
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DOI: https://doi.org/10.1007/s11033-010-0256-2