Morphology and Gene Expression Screening with Morpholinos in Zebrafish Embryos

Area of Science:

• Developmental Biology
• Genetics
• Molecular Biology

Background:

• High-throughput screening (HTS) with loss-of-function strategies efficiently identifies genes in biological processes.
• Morpholinos are established tools in zebrafish for targeted gene knockdown.
• Convergent extension is a key morphogenetic process during gastrulation.

Purpose of the Study:

• To describe systematic screening procedures using morpholinos in zebrafish.
• To identify novel deubiquitylases involved in zebrafish gastrulation.
• To establish a method for discovering genes regulating embryonic development.

Main Methods:

• Utilized a loss-of-function screening strategy in zebrafish.
• Employed morpholinos for targeted gene knockdown.
• Assessed candidate genes through analysis of embryonic morphology and whole mount in situ hybridization (WISH) for molecular signals.

Main Results:

• Successfully established a systematic screening protocol for identifying novel genes.
• Identified candidate deubiquitylases potentially regulating convergent extension.
• Demonstrated the utility of combining morphological and molecular assays for gene discovery.

Conclusions:

• Systematic morpholino screening in zebrafish is an effective method for identifying genes in developmental processes.
• Novel deubiquitylases play a role in convergent extension during gastrulation.
• This approach facilitates the discovery of genes critical for embryonic development.