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Updated: Oct 25, 2025

Isolation, Enrichment, and Maintenance of Medulloblastoma Stem Cells
06:32

Isolation, Enrichment, and Maintenance of Medulloblastoma Stem Cells

Published on: September 1, 2010

16.5K

CREB signaling activity correlates with differentiation and survival in medulloblastoma

Inna Armandari1,2, Walderik W Zomerman3, Sabine L A Plasschaert4

  • 1Department of Ageing Biology/ERIBA, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, the Netherlands.

Scientific Reports
|August 10, 2021
PubMed

Insights

Phosphorylated CREB (cAMP response element-binding protein) is a key indicator of medulloblastoma survival and differentiation. Activating CREB via PKA signaling enhances chemotherapy sensitivity in this childhood brain cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Neuroscience

Background:

  • Medulloblastoma, a common childhood brain cancer, requires further proteomic characterization for novel drug target identification.
  • Protein interactions are crucial for understanding cancer biology and developing targeted therapies.

Purpose of the Study:

  • To investigate the role of protein phosphorylation in medulloblastoma.
  • To explore the correlation between CREB phosphorylation and medulloblastoma patient survival and cellular differentiation.

Main Methods:

  • Analysis of phosphoprotein signaling profiles from a large cohort of primary medulloblastoma samples.
  • Examination of phosphorylated CREB expression during normal cerebellar development.
  • In vitro studies using cerebellar granule neuron progenitor (CGNP) cells treated with specific signaling inducers.
  • Assessment of medulloblastoma cell sensitivity to chemotherapy following CREB activation.

Main Results:

  • Phosphorylation of transcription factor CREB significantly correlates with improved medulloblastoma patient survival.
  • Phosphorylated CREB is selectively expressed in differentiating CGNP cells during cerebellar development.
  • Forskolin, Bmp6, and Bmp12 treatment induced CREB phosphorylation and CGNP differentiation.
  • Activation of CREB via PKA-mediated signaling, but not BMP/MEK/ERK signaling, increased medulloblastoma cell sensitivity to chemotherapy.

Conclusions:

  • CREB phosphorylation is a significant prognostic marker in medulloblastoma.
  • Targeting PKA-mediated CREB signaling may represent a novel therapeutic strategy to enhance chemotherapy efficacy in medulloblastoma.

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