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Combinatorial signaling in development

R A Cornell1, D Kimelman

  • 1Department of Biochemistry, School of Medicine, University of Washington, Seattle 98195.

Bioessays : News and Reviews in Molecular, Cellular and Developmental Biology
|August 1, 1994
PubMed
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Embryonic development relies on cells communicating through multiple signals. This review explores how combining two signals, whether working together or against each other, shapes cell fate during development.

Area of Science:

  • Developmental biology
  • Cell signaling
  • Embryogenesis

Background:

  • Intercellular signaling is crucial for embryonic development in both vertebrates and invertebrates.
  • Complex developmental processes, such as mesoderm and neural ectoderm induction (in Xenopus) and vulva induction (in C. elegans), involve multiple signaling pathways.

Purpose of the Study:

  • To review and categorize instances where two intercellular signals combine to influence cell fate during embryonic development.
  • To analyze the nature of these combinatorial signaling events, focusing on synergy and antagonism.

Main Methods:

  • Review of existing literature on intercellular signaling in embryonic development.
  • Categorization of signaling interactions based on signal synergy/antagonism and individual signal inductive potential.

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Main Results:

  • Identified various examples of dual-signal interactions in embryonic development.
  • Classified these interactions into categories based on synergistic or antagonistic signal effects.
  • Highlighted the role of individual signal strength in determining the outcome of combined signaling.

Conclusions:

  • Combinatorial signaling, involving the interplay of two or more signals, is a fundamental mechanism in embryonic development.
  • These complex signaling networks provide robustness and precision to developmental processes.
  • Understanding these interactions is key to deciphering the intricate pathways of embryogenesis.