Modeling glioblastoma invasion using human brain organoids and single-cell transcriptomics

Area of Science:

• Neuroscience
• Oncology
• Biotechnology

Background:

• Glioblastoma (GBM) is an aggressive brain cancer with high invasiveness, posing challenges for in vitro study.
• Tumor heterogeneity and therapy resistance limit therapeutic progress in GBM.
• Existing in vitro models struggle to replicate the complex invasion dynamics of human GBM.

Purpose of the Study:

• To develop a novel in vitro model for studying human glioblastoma (GBM) invasion.
• To investigate the invasive behavior and transcriptional changes of patient-derived GBM cells using human cerebral organoids.
• To identify potential therapeutic targets for GBM based on cellular interactions.

Main Methods:

• Utilized human cerebral organoids as a scaffold for patient-derived GBM cell invasion.
• Employed tissue clearing and confocal microscopy to visualize GBM cell invasion within organoids.
• Performed single-cell RNA sequencing on GBM cells before and after co-culture with organoid cells.

Main Results:

• GBM cells formed long microtubes within organoids, mimicking in vivo invasion.
• Transcriptional analysis revealed consistent upregulation of invasion-related genes across GBM samples.
• In silico screening identified potential receptor-ligand interactions as therapeutic targets.

Conclusions:

• The human cerebral organoid model effectively recapitulates GBM invasion and heterogeneity in vitro.
• The model facilitates the study of GBM cell dispersion and identifies reactive transcriptional changes.
• This approach offers potential for rapid pharmacological screening and personalized GBM treatment selection.