Orthotopic glioblastoma stem-like cell xenograft model in mice to evaluate intra-arterial delivery of bevacizumab: From bedside to bench

Jan Karl Burkhardt, Christoph P. Hofstetter, Alejandro Santillan, Benjamin J. Shin, Conor P. Foley, Douglas J. Ballon, Y. Pierre Gobin, John A. Boockvar

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Bevacizumab (BV), a humanized monocolonal antibody directed against vascular endothelial growth factor (VEGF), is a standard intravenous (IV) treatment for recurrent glioblastoma multiforme (GBM), that has been introduced recently as an intra-arterial (IA) treatment modality in humans. Since preclinical models have not been reported, we sought to develop a tumor stem cell (TSC) xenograft model to investigate IA BV delivery in vivo. Firefly luciferase transduced patient TSC were injected into the cortex of 35 nude mice. Tumor growth was monitored weekly using bioluminescence imaging. Mice were treated with either intraperitoneal (IP) or IA BV, with or without blood-brain barrier disruption (BBBD), or with IP saline injection (controls). Tumor tissue was analyzed using immunohistochemistry and western blot techniques. Tumor formation occurred in 31 of 35 (89%) mice with a significant signal increase over time (p = 0.018). Post mortem histology revealed an infiltrative growth of TSC xenografts in a similar pattern compared to the primary human GBM. Tumor tissue analyzed at 24 hours after treatment revealed that IA BV treatment with BBBD led to a significantly higher intratumoral BV concentration compared to IA BV alone, IP BV or controls (p < 0.05). Thus, we have developed a TSC-based xenograft mouse model that allows us to study IA chemotherapy. However, further studies are needed to analyze the treatment effects after IA BV to assess tumor progression and overall animal survival.

Original languageEnglish (US)
Pages (from-to)1568-1572
Number of pages5
JournalJournal of Clinical Neuroscience
Volume19
Issue number11
DOIs
StatePublished - Nov 2012

All Science Journal Classification (ASJC) codes

  • Surgery
  • Neurology
  • Clinical Neurology
  • Physiology (medical)

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