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Regular Care and Maintenance of a Zebrafish Danio rerio Laboratory: An Introduction
Published on: November 18, 2012
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Mapping glutathione utilization in the developing zebrafish (Danio rerio) embryo
Archit Rastogi1, Christopher W Clark2, Sarah M Conlin2
1Molecular & Cellular Biology Graduate Program, University of Massachusetts, Amherst, MA, 01003, USA.
Redox Biology
|June 16, 2019
Summary
This study visualizes organ-specific glutathione (GSH) utilization in developing zebrafish using monochlorobimane (MCB) dye. MCB staining reveals dynamic GSH changes during organogenesis and identifies sensitive tissues for toxicant assessment.
Area of Science:
- Developmental Biology
- Biochemistry
- Toxicology
Background:
- Glutathione (GSH) is crucial for embryonic development, but its organ-specific utilization is understudied.
- Zebrafish embryos offer a model for studying developmental processes in vivo.
Purpose of the Study:
- To visualize and quantify organ-specific GSH utilization during zebrafish embryonic development.
- To assess the sensitivity and specificity of monochlorobimane (MCB) staining for detecting GSH changes.
- To evaluate MCB staining's utility in identifying toxicant-induced disruptions in GSH homeostasis.
Main Methods:
- Developing zebrafish embryos were incubated with monochlorobimane (MCB) to form fluorescent adducts with GSH.
- Epifluorescence microscopy was used to image GSH distribution and intensity in various organs.
- MCB staining was validated using known GSH modulators (tert-butylhydroperoxide, N-Acetylcysteine, BSO, ethacrynic acid) and toxicants (perfluorooctanesulfonic acid, mono-(2-ethyl-hexyl)phthalate).
Main Results:
- MCB staining revealed dynamic, organ-specific patterns of GSH utilization throughout zebrafish development.
- Heart and brain exhibited distinct GSH fluorescence profiles that changed with embryonic age.
- MCB staining accurately reflected GSH level alterations induced by chemical modulators and toxicants in a dose-, structure-, and age-dependent manner.
Conclusions:
- Monochlorobimane (MCB) staining is a robust and sensitive method for spatiotemporal assessment of GSH utilization in developing organisms.
- This technique can effectively identify sensitive organs and developmental stages affected by toxic exposures.
- MCB staining provides valuable insights into the role of GSH in organogenesis and its disruption by environmental factors.
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