Journal of Neuro-Oncology

, Volume 101, Issue 2, pp 179–188

Preclinical evaluation of ex vivo expanded/activated γδ T cells for immunotherapy of glioblastoma multiforme

  • Nichole L. Bryant
  • G. Yancey Gillespie
  • Richard D. Lopez
  • James M. Markert
  • Gretchen A. Cloud
  • Catherine P. Langford
  • Hilal Arnouk
  • Yun Su
  • Hilary L. Haines
  • Catalina Suarez-Cuervo
  • Lawrence S. LambJr
Laboratory Investigation - Human/Animal Tissue


We have previously shown that expanded/activated γδ T cells from healthy donors are cytotoxic to GBM cell lines and primary GBM explants. In this report, we examined the therapeutic effect of intracranial infusion of expanded/activated γδ T cells on human minimal and established U251 tumor xenografts in athymic nude mice. Immunohistochemistry was used to determine the presence of NKG2D ligands on cell lines and tumors, and blocking studies were used to determine the effect of these ligands on γδ T cell recognition. Expanded/activated γδ T cells were prepared by 18-day culture in RPMI, human serum (HS), anti-CD2, IL-12, IFN-γ, and OKT-3. Anti-GBM activity of the cell product was assessed using in vitro cytotoxicity assays against the GBM cell line U251MG in suspension and in adherent culture. Ex vivo expanded/activated γδ T cells were of the effector/memory phenotype, expressed Th1 cytokines, and effectively killed U251 cells in vitro. Xenografts were prepared using a U251 cell line following transfection with a firefly luciferase gene to monitor tumor progression. Mice treated with γδ T cells showed slower progression of both new and established GBM xenografts versus mice that received vehicle only as determined by photon emission over time. Median survival was improved in all γδ T cell treated groups between 32 and 50 days by Kaplan–Meier analysis. U251 cells expressed ULBP-2 and ULBP-3, although blocking of these reduced in vitro cytotoxicity of γδ T cells to U251MG by only 33 and 25%, respectively. These studies show that expanded/activated γδ T cells can mediate killing of new or established GBM xenografts, reduce tumor progression, and constitute a potentially effective novel immunotherapeutic strategy against GBM.


Immunotherapy Cellular therapy Glioblastoma multiforme Brain tumor T cells γδ T cells 


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Copyright information

© Springer Science+Business Media, LLC. 2010

Authors and Affiliations

  • Nichole L. Bryant
    • 1
  • G. Yancey Gillespie
    • 2
  • Richard D. Lopez
    • 3
  • James M. Markert
    • 2
  • Gretchen A. Cloud
    • 3
  • Catherine P. Langford
    • 2
  • Hilal Arnouk
    • 3
  • Yun Su
    • 3
  • Hilary L. Haines
    • 1
  • Catalina Suarez-Cuervo
    • 3
  • Lawrence S. LambJr
    • 1
    • 3
  1. 1.Departments of Pediatrics, School of MedicineUniversity of Alabama at BirminghamBirminghamUSA
  2. 2.Departments of Surgery, School of MedicineUniversity of Alabama at BirminghamBirminghamUSA
  3. 3.Departments of Medicine, School of MedicineUniversity of Alabama at BirminghamBirminghamUSA

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