VEGF is upregulated in a neuroblastoma and hepatocyte coculture model

The Journal of Surgical Research
Elizabeth A BeierleM K Chen

Abstract

We hypothesize that angiogenic factors are altered by the interaction between neuroblastoma cells and host tissues. Human Chang hepatocytes and human neuroblastoma cells are cultured separately and in a noncontact, coculture system. Immunostaining for VEGF is performed on the cells. ELISA is used to detect vascular endothelial growth factor (VEGF), basic fibroblast growth factor, and interleukin-8 in the conditioned media. Human umbilical vein endothelial cells (HUVEC) are cultured with standard medium (control) and hepatocyte, neuroblastoma, and coculture conditioned media. After 48 and 72 h, cells are counted to determine proliferation. Finally, VEGF-blocking antibody is added to the HUVEC cultures with the conditioned media. VEGF is markedly elevated in the coculture medium compared to the media from hepatocytes or neuroblastoma grown alone [412.2 +/- 52 vs 235 +/- 35 or 74.5 +/- 28.5 (pg/10(6) cells), P < 0.05]. Other growth factors are almost undetectable in any of the media. Immunostaining for VEGF in the cocultured hepatocytes is decreased by almost 50%, but VEGF immunostaining is increased fourfold in the cocultured neuroblastoma cells. A significant increase in cell proliferation is seen at both 48 and 72 h when HUVEC ...Continue Reading

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Citations

Jul 11, 2013·The Science of the Total Environment·Peter M WiedemannEvi Vogel
Nov 6, 2013·Scandinavian Journal of Gastroenterology·Ji-Hua ShiPål-Dag Line
Aug 14, 2002·World Journal of Gastroenterology : WJG·Juan RenBo-Rong Pan
Mar 13, 2003·Journal of Pediatric Surgery·Elizabeth A BeierleMike K Chen
May 6, 2004·The Journal of Surgical Research·Elizabeth A BeierleMike K Chen

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