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A Protocol for Rapid Post-mortem Cell Culture of Diffuse Intrinsic Pontine Glioma DIPG
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The oncolytic virus Delta-24-RGD elicits an antitumor effect in pediatric glioma and DIPG mouse models

Naiara Martínez-Vélez1,2,3, Marc Garcia-Moure1,2,3, Miguel Marigil1,2,3

  • 1Health Research Institute of Navarra (IDISNA), Pamplona, Navarra, Spain.

Nature Communications
|May 30, 2019
PubMed

Insights

Delta-24-RGD oncolytic virotherapy shows promise for treating pediatric high-grade gliomas (pHGG) and diffuse intrinsic pontine gliomas (DIPGs). This adenovirus therapy is safe and enhances survival by directly attacking tumors and stimulating an immune response.

Area of Science:

  • Oncology
  • Virology
  • Immunology

Background:

  • Pediatric high-grade gliomas (pHGG) and diffuse intrinsic pontine gliomas (DIPGs) are aggressive brain tumors with limited treatment options.
  • Oncolytic virotherapy presents a promising therapeutic strategy for these challenging pediatric cancers.

Purpose of the Study:

  • To evaluate the safety and efficacy of Delta-24-RGD, a replication-competent adenovirus, in preclinical models of pHGG and DIPGs.
  • To investigate the mechanisms underlying the anti-glioma effects of Delta-24-RGD.

Main Methods:

  • Administration of Delta-24-RGD to immunodeficient and immunocompetent mouse models of pHGG and DIPGs.
  • Assessment of tumor growth, survival rates, and immune responses post-treatment.

Main Results:

  • Delta-24-RGD demonstrated a safe profile in mice.
  • Significant increases in survival were observed in both immunodeficient and immunocompetent models.
  • The anti-glioma effect was attributed to both direct oncolysis and virus-induced immune responses.

Conclusions:

  • Delta-24-RGD is a safe and effective oncolytic virus for pediatric high-grade gliomas and DIPGs.
  • The dual mechanism of action (oncolysis and immune stimulation) supports its therapeutic potential.
  • These findings have led to a Phase I/II clinical trial for newly diagnosed DIPG.

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