Long-term Live Imaging Device for Improved Experimental Manipulation of Zebrafish Larvae
October 27th, 2017
This manuscript describes the zWEDGI (zebrafish Wounding and Entrapment Device for Growth and Imaging), which is a compartmentalized device designed to orient and restrain zebrafish larvae. The design permits tail transection and long-term collection of high-resolution fluorescent microscopy images of wound healing and regeneration.
Overview
This manuscript describes the zWEDGI (zebrafish Wounding and Entrapment Device for Growth and Imaging), a device designed to orient and restrain zebrafish larvae for high-resolution imaging of wound healing. This method allows for tail transection and long-term observation of regeneration processes.
Key Study Components
Area of Science
- Neuroscience
- Biology
- Regenerative Medicine
Background
- The zWEDGI device facilitates the study of wound healing in live zebrafish larvae.
- It allows for simultaneous wounding and imaging without hindering tail regrowth.
- The device's compartments can be modified for different experimental protocols.
- This approach addresses key questions regarding collagen reorganization and cellular responses post-injury.
Purpose of Study
- To create a platform for microscopic analysis of wound healing.
- To investigate the contributions of various biological factors in tissue regrowth.
- To develop a versatile device for different larval stages and experimental needs.
Methods Used
- Modeling the PDMS component of the device according to specified geometries.
- Using a photopolymer 3-D printer to create molds.
- Cleaning the molds with denatured alcohol and compressed air.
- Implementing the device for live imaging of zebrafish larvae.
Main Results
- The zWEDGI effectively supports long-term imaging of wound healing.
- Tail regrowth was not impeded by the device during experiments.
- High-resolution images provided insights into the healing process.
- The device's design allows for modifications to suit various experimental setups.
Conclusions
- The zWEDGI is a valuable tool for studying wound healing in zebrafish larvae.
- This device enables researchers to explore critical biological processes in real-time.
- Future studies can utilize this platform to further understand tissue regeneration mechanisms.
Frequently Asked Questions
Executive Industry Relevance
High-resolution, long-term live imaging of zebrafish larvae using the zWEDGI device enables precise interrogation of wound healing and tissue regeneration mechanisms. This platform supports predictive confidence in early discovery by allowing real-time observation of cellular and extracellular matrix dynamics. Its modularity and reusability position it as a scalable asset for phenotypic screening and mechanistic de-risking in preclinical model systems.
Strategic Applications in Biopharma R&D
Early Discovery & Target Validation
- Enables direct visualization of cellular responses and collagen fiber reorganization post-injury.
- Supports functional target validation by permitting manipulation and observation within a single device.
- Facilitates mechanistic de-risking through real-time, longitudinal imaging of regenerative processes.
Screening & Assay Development
- Provides standardized orientation and parallel processing of multiple larvae for reproducible imaging workflows.
- Allows for quantitative, high-content imaging outputs suitable for downstream analysis.
- Streamlines assay development by integrating wounding, treatment application, and imaging in one platform.
Translational & Preclinical Research
- Offers a disease-relevant system for studying tissue regrowth and wound healing dynamics.
- Enables continuity from discovery through preclinical validation by supporting diverse experimental protocols.
- Permits integration of drug application and biomarker analysis within live imaging workflows.
Pipeline & Workflow Integration
The zWEDGI device fits within the early discovery to preclinical continuum, supporting hypothesis-driven research and assay development for regenerative biology and wound healing.
- Discovery Biology: Supports hypothesis testing on cellular and matrix responses to injury in vivo.
- Screening: Delivers reproducible, quantitative imaging outputs for comparative analysis.
- Analytics: Enables 3D spatial reconstruction and time-lapse analysis of regenerative processes.
- Translational Research: Aligns with biomarker discovery and validation in a live vertebrate model.
- Enterprise Reuse: Modular design allows adaptation for various larval stages and experimental needs.
Operational & Enterprise Impact
- Scientific Value: Increases predictive confidence and reduces mechanistic ambiguity in regenerative studies.
- Operational Value: Enhances standardization, reproducibility, and throughput in live imaging workflows.
- Strategic Value: Improves go/no-go decision-making and capital efficiency by enabling robust phenotypic screening.
- Portfolio Impact: Supports risk-adjusted prioritization of regenerative targets and therapeutic strategies.
Implementation Considerations
- Requires expertise in zebrafish handling, live imaging, and device fabrication.
- Needs access to 3D printing, PDMS molding, and advanced microscopy infrastructure.
- Demands cross-team standardization for device preparation and imaging protocols.
- Adaptable across larval stages and experimental designs due to modular compartments.
- Careful handling of photopolymer resins and device cleaning is essential for viability and reproducibility.
Biopharma FAQs
Chapters in this video
0:05
Title
0:57
Design and 3D Printing of Molds
2:57
PDMS Fabrication of zWEDGI Device
4:43
Plasma-bonding zWEDGI to Glass Dish
7:19
Channel Preparation and Loading Larvae
9:52
Wounding and Imaging Larvae and End of Experiment
11:14
Results: Post Wound Live Imaging and 3D Reconstruction of Zebrafish Larvae Tail Fin
12:36
Conclusion
