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Updated: May 7, 2026

Preparation of Cell-lines for Conditional Knockdown of Gene Expression and Measurement of the Knockdown Effects on E4orf4-Induced Cell Death
13:54

Preparation of Cell-lines for Conditional Knockdown of Gene Expression and Measurement of the Knockdown Effects on E4orf4-Induced Cell Death

Published on: October 21, 2012

Knockdown of human TCF4 affects multiple signaling pathways involved in cell survival, epithelial to mesenchymal

Marc P Forrest1, Adrian J Waite, Enca Martin-Rendon

  • 1Institute of Psychological Medicine and Clinical Neurosciences, MRC Centre for Neuropsychiatric Genetics and Genomics, School of Medicine, Cardiff University, Cardiff, United Kingdom.

Plos One
|September 24, 2013
PubMed

Insights

Transcription factor TCF4 regulates genes involved in brain development and cell survival. Its disruption is linked to Pitt-Hopkins syndrome and schizophrenia risk, impacting key pathways.

Area of Science:

  • Neuroscience
  • Genetics
  • Molecular Biology

Background:

  • Haploinsufficiency of TCF4 causes Pitt-Hopkins syndrome (PTHS), a severe intellectual disability.
  • TCF4 variants are associated with increased schizophrenia risk.
  • The precise role of TCF4 in brain gene regulation remains largely unknown.

Purpose of the Study:

  • To investigate the effects of TCF4 knockdown on gene expression in neuroblastoma cells.
  • To identify TCF4-regulated pathways and genes in the brain.

Main Methods:

  • Genome-wide expression profiling was used to analyze gene expression changes.
  • SH-SY5Y neuroblastoma cells were subjected to acute TCF4 knockdown.
  • Pathway and enrichment analyses were performed on differentially expressed genes.

Main Results:

  • TCF4 knockdown resulted in 1204 gene expression changes (494 upregulated, 710 downregulated).
  • Enriched pathways included TGF-β signaling, epithelial to mesenchymal transition (EMT), and apoptosis.
  • Key differentially expressed genes included EMT regulators (SNAI2, DEC1) and proneural genes (NEUROG2, ASCL1).
  • Expression of mental retardation genes (UBE3A, ZEB2, MEF2C) was altered.

Conclusions:

  • TCF4 regulates convergent signaling pathways critical for neuronal differentiation and survival.
  • TCF4 influences the expression of genes associated with intellectual disability syndromes.
  • These findings provide insights into the molecular mechanisms underlying TCF4-related neurodevelopmental disorders.

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