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Related Experiment Videos

Zebrafish id2 developmental expression pattern contains evolutionary conserved and species-specific characteristics.

Shang-Wei Chong1, Thi-Thu-Hang Nguyen, Lee-Thean Chu

  • 1Laboratory of Fish Developmental Biology, Institute of Molecular and Cell Biology, National University of Singapore.

Developmental Dynamics : an Official Publication of the American Association of Anatomists
|October 28, 2005
PubMed
Summary

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Inhibitor of differentiation (Id) proteins regulate cell development. Zebrafish id2 is expressed in various tissues and its expression is controlled by Notch signaling.

Area of Science:

  • Developmental Biology
  • Molecular Biology
  • Genetics

Background:

  • The inhibitor of differentiation (Id) family are helix-loop-helix (HLH) transcription factors crucial for cell proliferation, differentiation, cell cycle control, and apoptosis.
  • Id proteins act as dominant-negative regulators by sequestering basic HLH (bHLH) factors, preventing the formation of active heterodimers and inhibiting differentiation pathways.

Purpose of the Study:

  • To isolate and characterize the expression pattern of zebrafish id2 during embryonic development.
  • To investigate the regulatory relationship between Notch signaling and id2 expression in zebrafish.

Main Methods:

  • Isolation of zebrafish id2 gene.
  • Whole-mount in situ hybridization to determine id2 expression patterns during zebrafish development.

Related Experiment Videos

  • Analysis of id2 expression in mind bomb mutant zebrafish.

    • Main Results:

    • Zebrafish id2 was isolated, and its expression was characterized across various embryonic tissues, including the tegmentum, midbrain-hindbrain boundary, cerebellum, specific rhombomeres, notochord, and corpuscles of Stannius.
    • Expression of id2 was found to be repressed in mind bomb mutants.
    • This repression suggests that Notch signaling acts upstream of Id2.

    Conclusions:

    • Zebrafish id2 exhibits a distinct expression pattern during development, highlighting its role in specific embryonic structures.
    • The findings indicate a regulatory link between Notch signaling and id2, suggesting Id2's involvement in Notch-mediated developmental processes.