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Single-cell transcriptome analysis upon ECM-remodeling meningioma cells.

Wen-Qiang Che1,2, Yu-Jiao Wang3, Liu Yang1

  • 1Department of Neurosurgery, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China.

Neurosurgical Review
|March 16, 2024
PubMed
Summary

Extracellular matrix-remodeling meningioma cells (MGCs) in the brain-tumor interface show stable adhesion and lower malignancy. This study reveals new insights into meningioma heterogeneity and behavior.

Keywords:
Copy number variationECM-remodelingMeningiomaSingle-cell RNA sequencing

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Area of Science:

  • Neuro-oncology
  • Molecular Biology
  • Genomics

Background:

  • Meningiomas are common central nervous system tumors with poorly understood intratumoral heterogeneity.
  • Investigating specific cell populations, like extracellular matrix (ECM)-remodeling meningioma cells, is crucial for understanding tumor biology.

Purpose of the Study:

  • To characterize the transcriptome and biological properties of ECM-remodeling meningioma cells.
  • To explore the role of these cells in meningioma heterogeneity and malignancy.

Main Methods:

  • Single-cell RNA sequencing (ScRNA-seq) of meningioma samples.
  • Bioinformatics analyses including differential gene expression, KEGG/GO enrichment, GSEA, PPI, and CNV analysis.

Main Results:

  • Identified 18 cell types, including six meningioma subtypes, with ECM-remodeling meningioma cells (MGCs) at the brain-tumor interface.
  • DEGs in MGCs were linked to cell adhesion and ECM organization.
  • MGCs exhibited stable basement membrane adhesion and lower copy number variation (CNV) scores, suggesting reduced malignancy.

Conclusions:

  • ECM-remodeling MGCs are a distinct subtype localized at the brain-tumor interface.
  • These cells display characteristics associated with lower malignancy, contributing to meningioma heterogeneity.
  • Findings offer novel insights into meningioma biology and potential therapeutic targets.