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A central role for TRPS1 in the control of cell cycle and cancer development

Lele Wu1, Yuzhi Wang1, Yan Liu2

  • 1The Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Institute of Life Science, Southeast University, Nanjing, PR China. Contributed equally to this work.

Oncotarget
|October 4, 2014
PubMed

Insights

The study reveals that TRPS1 regulates cell cycle progression and proliferation. TRPS1 is elevated in luminal breast cancer, suggesting its role as a central hub in cancer development.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Cancer Research

Background:

  • The eukaryotic cell cycle regulatory network is complex and not fully understood.
  • TRPS1, an atypical GATA factor, has a poorly defined role in cell cycle control.

Purpose of the Study:

  • To investigate the role of TRPS1 in cell cycle regulation and proliferation.
  • To determine TRPS1's impact on key cell cycle genes and epigenetic modifiers.
  • To assess TRPS1 expression in different breast cancer subtypes.

Main Methods:

  • Gene silencing of TRPS1.
  • Cell synchronization studies.
  • Analysis of cell cycle-related gene expression.
  • Assessment of histone deacetylase (HDAC) activity and histone acetylation.
  • Comparison of TRPS1 expression in breast cancer tissues.

Main Results:

  • TRPS1 silencing differentially affected nine key cell cycle genes, primarily those involved in G2 phase and G2/M transition.
  • TRPS1 controls the expression of 53BP1 and decreases HDAC2 and HDAC4 expression, leading to increased histone H4 K16 acetylation.
  • TRPS1 expression is significantly elevated in luminal breast cancer cells and tissues.

Conclusions:

  • TRPS1 plays a crucial role in controlling cell cycle progression, particularly in the G2 phase.
  • TRPS1 influences cell proliferation through modulation of cell cycle genes and epigenetic modifications.
  • Elevated TRPS1 in luminal breast cancer suggests its potential as a therapeutic target and biomarker for this subtype.

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