Single Cell Gene Expression Profiling Reveals Subpopulations in Human Brain Tumors

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Single cell gene expression profiling has been used to study the heterogeneity of brain tumors, revealing subpopulations of cells within the tumor tissue. Researchers from the Institute for Neuroscience developed a protocol to obtain viable single cells from freshly isolated human brain tissue, allowing for the assessment of 36 genes by reverse transcription quantitative PCR. The study found that tumor cells from both astrocytoma grade IV and oligodendroglioma grade III tumors constituted cell subpopulations defined by their gene expression profiles.

Key Takeaways:

  • The study used single cell gene expression profiling to identify subpopulations of cells within human primary brain tumors.
  • The researchers developed a protocol to obtain viable single cells from freshly isolated human brain tissue, allowing for the assessment of 36 genes.
  • Tumor cells from both astrocytoma grade IV and oligodendroglioma grade III tumors consisted of cell subpopulations defined by their gene expression profiles.
  • Some cells from the oligodendroglioma grade III tumor proper shared molecular characteristics with the cells from the penumbra of the same tumor, suggesting a subpopulation of cells within the oligodendroglioma grade III tumor consisted of normal brain cells.
  • The study concluded that subpopulations of tumor cells can be identified by using single cell gene expression profiling.
  • The research highlights the importance of understanding the heterogeneity of brain tumors to develop targeted therapies.

Statistics:

  • The study assessed the expression of 36 genes in single cells from human brain tumors.
  • The researchers analyzed the gene expression profiles of tumor cells from two different types of brain tumors: astrocytoma grade IV and oligodendroglioma grade III.
  • The study found that tumor cells from both tumor types consisted of cell subpopulations defined by their gene expression profiles.
  • The research suggests that a minimum of 36 genes can be assessed using single cell gene expression profiling in human brain tumors.

Sources:

  • Classification of Subpopulations of Cells Within Human Primary Brain Tumors by Single Cell Gene Expression Profiling. Neurochemical Research, 2015;40(2):336-352.
  • Springer-Verlag New York LLC, 233 Spring Street, New York, NY 10013, USA (www.springer.com)
  • Florey Inst Neurosci & Mental Hlth, Parkville, Vic, Australia (E. Mollerstrom, additional author)