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Development and Application of Rapamycin-regulated Tyrosine Phosphatases
06:56

Development and Application of Rapamycin-regulated Tyrosine Phosphatases

Published on: September 6, 2024

The Capicua repressor--a general sensor of RTK signaling in development and disease

Gerardo Jiménez1, Stanislav Y Shvartsman, Ze'ev Paroush

  • 1Institució Catalana de Recerca i Estudis Avançats and Institut de Biologia Molecular de Barcelona-CSIC, Parc Científic de Barcelona, Barcelona 08028, Spain. gjcbmc@ibmb.csic.es

Journal of Cell Science
|April 25, 2012
PubMed

Insights

Capicua (CIC) acts as a crucial sensor for receptor tyrosine kinase (RTK) signaling. This protein represses RTK-responsive genes until signaling activates them, controlling cell fate and proliferation in Drosophila and mammals.

Area of Science:

  • Molecular Biology
  • Genetics
  • Developmental Biology

Background:

  • Receptor tyrosine kinase (RTK) pathways regulate gene expression for cellular decisions.
  • E-twenty-six (ETS) transcription factors are known RTK pathway effectors.
  • The role of HMG-box protein Capicua (CIC) in RTK signaling requires further elucidation.

Purpose of the Study:

  • To highlight the role of Capicua (CIC) as a key sensor of RTK signaling.
  • To elucidate the mechanism by which CIC regulates RTK-responsive genes.
  • To discuss the conserved function and implications of CIC in Drosophila and mammals.

Main Methods:

  • Review of recent studies on Capicua (CIC) function.
  • Analysis of CIC's role as a repressor of RTK-responsive genes.
  • Comparative analysis of CIC function in Drosophila and mammalian systems.

Main Results:

  • Capicua (CIC) functions as a repressor of RTK-responsive genes.
  • CIC repression is relieved upon RTK signaling activation, enabling gene expression.
  • This regulatory switch is vital for RTK responses including cell fate determination and proliferation.
  • Evidence suggests conserved CIC function in mammals, linked to cancer and neurodegeneration.

Conclusions:

  • Capicua (CIC) is a conserved key sensor of RTK signaling.
  • CIC's mechanism of gene repression and release is crucial for RTK pathway outcomes.
  • Understanding CIC offers insights into RTK signaling specificity and diseases like cancer and neurodegeneration.

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