VEGF-A not Ang2 mediates endothelial-like differentiation of immature DCs by ERK1/2 signaling in the microenvironment of human colon adenocarcinoma

  • Authors: Jing Lu, Kangdong Liu, Jimin Zhao, Jun Zhao, Junfen Ma, Hongyan Yang, Youtian Huang, Zhenzhu Qin, Ruihua Bai, Lili Jiang , Fengshou Lv, Pei Li, Wenhai Yan, Mingyao Zhao, Ziming Dong
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  • Published online on: Tuesday, March 29, 2011
  • Pages: 1579-1588
  • DOI: 10.3892/ijo.2011.989

Abstract

Endothelial-like differentiation of dendritic cells (DCs) is an interesting and significant phenomenon, which is worth further investigation. Here, we show that the tumor microenvironment derived from the supernatant of the SW620 human colon adenocarcinoma cell line and colon adenocarcinoma tissue homogenate can promote immature DCs (iDCs) to differentiate from the DC pathway toward endothelial cells, while the peri-carcinoma homogenate supernatant does not have this role. Inhibition of angiopoietin-2 (Ang2) in the supernatant by its antibody has no obvious influence on the endothelial-like differentiation. In contrast, inhibition of vascular endothelial growth factor-A (VEGF-A) blocked the differentiation. During the course of differentiation, a sustained activation of ERK1/2 was detected. PD98059 blocked the phosphorylation of ERK1/2 as well as the endothelial-like differentiation of iDCs. Inhibition of VEGF-A also blocked the phosphorylation of ERK1/2. These data suggest that VEGF-A not Ang2 mediates endothelial-like differentiation of iDCs by ERK1/2 signaling in the microenvironment of human colon adenocarcinoma.
Journal Cover

June 2011
Volume 38 Issue 6

Print ISSN: 1019-6439
Online ISSN:1791-2423

2012 Impact Factor: 2.657
Ranked #31/196 Oncology
(total number of cites)

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APA
Lu, J., Liu, K., Zhao, J., Zhao, J., Ma, J., Yang, H., Huang, Y., Qin, Z., Bai, R., Jiang , L., Lv, F., Li, P., Yan, W., Zhao, M., & Dong, Z. (2011). VEGF-A not Ang2 mediates endothelial-like differentiation of immature DCs by ERK1/2 signaling in the microenvironment of human colon adenocarcinoma . International Journal of Oncology, 38(6), 1579-1588.
MLA
Lu, Liu, Zhao, Zhao, Ma, Yang, Huang, Qin, Bai, Jiang , Lv, Li, Yan, Zhao, and Ziming Dong. "VEGF-A not Ang2 mediates endothelial-like differentiation of immature DCs by ERK1/2 signaling in the microenvironment of human colon adenocarcinoma ." International Journal of Oncology International Journal of Oncology 38.6 (2011): 1579-1588.
Chicago
Lu, Liu, Zhao, Zhao, Ma, Yang, Huang, Qin, Bai, Jiang , Lv, Li, Yan, Zhao, and Ziming Dong. "VEGF-A not Ang2 mediates endothelial-like differentiation of immature DCs by ERK1/2 signaling in the microenvironment of human colon adenocarcinoma ." International Journal of Oncology International Journal of Oncology 38 no. 6 (2011): 1579-1588.