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Related Experiment Videos

High efficiency gene transfer into primary human tumor explants without cell selection

E M Jaffee1, G Dranoff, L K Cohen

  • 1Departments of Oncology, School of Medicine, Johns Hopkins University, Baltimore, Maryland 21205.

Cancer Research
|May 15, 1993
PubMed
Summary
This summary is machine-generated.

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Genetically engineered cancer vaccines secreting cytokines show promise in preclinical models. This study developed an efficient gene transfer method for autologous tumor vaccines, enabling clinical trials for cancer gene therapy.

Area of Science:

  • Oncology
  • Immunology
  • Gene Therapy

Background:

  • Autologous tumor cell vaccines engineered to secrete cytokines can elicit systemic immune responses against tumors in preclinical models.
  • Developing these vaccines for human cancer gene therapy is of significant interest.
  • Efficient gene transfer into primary human tumor explants is a major limitation due to poor tumor cell proliferation in culture.

Purpose of the Study:

  • To overcome the limitation of gene transfer into primary human tumor explants for autologous tumor vaccines.
  • To develop an efficient method for creating genetically modified autologous human tumor vaccines.
  • To prepare an autologous granulocyte-macrophage colony-stimulating factor (GM-CSF) secreting tumor vaccine for clinical trials.

Main Methods:

Related Experiment Videos

  • Utilized the retroviral vector MFG for gene transfer.
  • Employed short-term culture techniques for primary tumor explants.
  • Achieved gene transfer in renal, ovarian, and pancreatic tumor explants without selection.

    • Main Results:

    • Attained a mean transduction efficiency of 60% in primary tumor explants.
    • Successfully developed an autologous GM-CSF secreting tumor vaccine.
    • Demonstrated feasibility of gene transfer in various primary human tumor types.

    Conclusions:

    • Short-term culture with MFG retroviral vector enables efficient gene transfer into primary human tumor explants.
    • This approach facilitates the development of autologous tumor cell vaccines for cancer gene therapy.
    • The developed GM-CSF secreting tumor vaccine is ready for clinical trials.