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Updated: Jun 11, 2025

Laboratory-Engineered Glioblastoma Organoid Culture and Drug Screening
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Glioblastoma Cortical Organoids Recapitulate Cell-State Heterogeneity and Intercellular Transfer.

Vamsi Mangena1,2, Rony Chanoch-Myers3, Rafaela Sartore2,4

  • 1Department of Pathology and Krantz Family Center for Cancer Research, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts.

Cancer Discovery
|October 7, 2024
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Summary
This summary is machine-generated.

Glioblastoma (GBM) organoids reveal widespread transfer of genetic material from tumor cells to healthy brain cells. This intercellular transfer, mediated by extracellular vesicles, offers new insights into the GBM microenvironment.

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Area of Science:

  • Neuro-oncology
  • Cancer Biology
  • Organoid Modeling

Background:

  • Glioblastoma (GBM) is a complex brain tumor with heterogeneous cells integrated into the neuroglial microenvironment.
  • Existing models like gliomaspheres do not fully capture the intricate cellular interactions within GBM.

Purpose of the Study:

  • To develop and utilize long-term human cortical organoids to model the GBM ecosystem.
  • To investigate intercellular communication and transcript transfer within the GBM neuroglial microenvironment.

Main Methods:

  • Culturing patient-derived Glioblastoma (GBM) within human cortical organoids.
  • Employing single-cell RNA sequencing to analyze cellular diversity and gene expression.
  • Utilizing GFP-labeled GBM cells to track transcript and material transfer.

Main Results:

  • GBM cortical organoids more accurately reflect patient tumor cell diversity and expression compared to gliomaspheres.
  • Widespread transfer of Glioblastoma (GBM) transcripts and GFP was observed from malignant to nonmalignant cells.
  • Extracellular vesicles mediate this transfer, showing bias towards specific Glioblastoma (GBM) cell states and astroglia.

Conclusions:

  • GBM cortical organoids provide a more faithful model for studying intercellular dynamics in Glioblastoma.
  • Intercellular transfer of genetic material via extracellular vesicles is a significant feature of the Glioblastoma microenvironment.
  • This transfer mechanism may play a role in reprogramming the tumor microenvironment and could be relevant to other cancer types.