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Identifications of three novel alleles of Serrate in Drosophila

  • 0Key Laboratory of Medical Insects, College of Basic Medicine, Guizhou Medical University, Guiyang 550025, China; Department of Biology, College of Basic Medicine, Guizhou Medical University, Guiyang 550025, China; Research Center for Basic Sciences of Medicine, Guizhou Medical University, Guiyang 550025, China.
Cells & Development +

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February 25, 2024

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February 25, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Researchers identified three new alleles of the Serrate (Ser) gene, a key component of Notch signaling. These findings provide valuable genetic resources for studying fly wing development and Notch pathway regulation.

Area Of Science

  • Developmental Biology
  • Genetics
  • Molecular Biology

Background

  • The Notch signaling pathway is crucial for numerous physiological processes.
  • Canonical Notch activation involves ligand-receptor interactions, with Delta (Dl) and Serrate (Ser) as Drosophila ligands.

Purpose Of The Study

  • To identify and characterize novel genetic mutations affecting Notch signaling in Drosophila.
  • To investigate the role of new Serrate (Ser) alleles in fly wing development.

Main Methods

  • Genetic screening of a mutant library.
  • Immunofluorescent staining to assess target gene expression (Cut, Wingless).
  • MARCM cloning for genetic localization and sequencing for allele identification.
  • Complementary assays and transcript analysis.
  • Transposon excision to confirm gene function.

Main Results

  • A mutation, mf157, caused nicks in fly wings and repressed Notch target genes (Cut, Wingless).
  • mf157 was identified as a novel allele of the Serrate (Ser) gene, functioning upstream or at the level of Notch ligands.
  • Two additional new alleles of Ser (mf553, mf167) were identified.
  • Phenotypic rescue was observed upon transposon excision of mf157.

Conclusions

  • Three novel alleles of the Serrate (Ser) gene were identified.
  • These new alleles serve as important genetic resources for future research on Ser function and Notch signaling regulation in Drosophila development.

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