Abstract
The objective of this work was to study the effect of epidermal growth factor (EGF) induced secretions of angiogenesis factors in adipose-derived stem cells (ADSCs) and the involvement of mitogen-activated protein kinases (MAPK). ADSCs were cultured and ELISA assays were performed to quantify the vascular endothelial growth factor, the hepatocyte growth factor, and the stromal derived factor-1 in ADSC-conditioned medium before and after EGF treatments and after pharmacological inhibition of MAPKs with PD98059, SB203580, and SP600125. The tube formation assay was used to test the effects of EGF treated and inhibitor treated ADSCs on the human umbilical vein endothelial cells (HUVECs) tube formation. Liposuction was applied and ADSCs were cultured successfully. The ADSCs released a variety of angiogenic factors, with the EGF treatments enhancing secretions and promoting the HUVEC tube formation. The MAPK inhibitors PD98059 and SP600125 increased the paracrine to promote tubular formation, while the SB203580 played an opposite role. In conclusion, (1) the in vitro cultured ADSCs secrete various angiogenic factors and the EGF amplifies the secretion and can enhance the ADSCs on the HUVEC tube formation. (2) ERK1/2 and JNK pathway may be involved in the enhanced secretion capacity of ADSCs while the p38 pathway may exert an opposite effect.
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Li, Q., Li, Ph., Hou, Dj. et al. EGF Enhances ADSCs Secretion via ERK and JNK Pathways. Cell Biochem Biophys 69, 189–196 (2014). https://doi.org/10.1007/s12013-013-9769-3
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DOI: https://doi.org/10.1007/s12013-013-9769-3