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A Manual Small Molecule Screen Approaching High-throughput Using Zebrafish Embryos
Published on: November 8, 2014
Whole-animal imaging, gene function, and the Zebrafish Phenome Project
Keith C Cheng1, Xuying Xin, Darin P Clark
1Jake Gittlen Cancer Research Foundation and Division of Experimental Pathology, Penn State Hershey College of Medicine, Hershey, PA 17033, United States. kcheng76@gmail.com
Current Opinion in Genetics & Development
|October 4, 2011
Summary
Imaging techniques are crucial for the Zebrafish Phenome Project, enabling gene function studies through mutant phenotyping. Advanced methods like synchrotron microCT are vital for detailed analysis across all developmental stages.
Area of Science:
- * Developmental Biology
- * Genetics
- * Biomedical Imaging
Background:
- * The Zebrafish Phenome Project aims to understand vertebrate gene functions by creating and phenotyping mutants.
- * Imaging is essential for inferring biological functions from whole-animal observations across development.
- * High-resolution imaging is needed to identify cellular mechanisms and detect organ effects.
Purpose of the Study:
- * To outline the role and requirements of advanced imaging techniques for the Zebrafish Phenome Project.
- * To address the limitations of light-based imaging in older zebrafish due to pigmentation and reduced lucency.
- * To propose suitable imaging modalities for comprehensive phenotyping of zebrafish mutants.
Main Methods:
- * Light-based imaging for early-stage zebrafish embryos (up to 2 days).
- * Histology for larval zebrafish, facilitated by array use and relevant to human disease studies.
- * Synchrotron microtomography (microCT) using 10-25 keV X-rays for unhindered imaging of all life stages, including 3D modeling of phenotypes.
- * Robotic sample handling and advanced image processing for high-throughput analysis.
Main Results:
- * Light microscopy is limited to early development; histology and microCT are necessary for later stages.
- * Synchrotron microCT effectively overcomes pigmentation and tissue thickness challenges in larval and adult zebrafish.
- * The study highlights the need for technological advancements in imaging hardware and software for project success.
Conclusions:
- * Imaging is indispensable for the Zebrafish Phenome Project, providing critical phenotyping data.
- * Synchrotron microCT offers a powerful, non-invasive method for detailed 3D phenotyping of zebrafish across development.
- * Technological upgrades in imaging and data processing are required to meet the project's high-throughput demands.
