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Zebrafish embryos provide a unique opportunity to visualize complex biological processes, yet conventional imaging modalities are unable to access intricate biomolecular information without compromising the integrity of the embryos. Here, we report the use of confocal Raman spectroscopic imaging for the visualization and multivariate analysis of biomolecular information extracted from unlabeled zebrafish embryos. We outline broad applications of this method in: (i) visualizing the biomolecular distribution of whole embryos in three dimensions, (ii) resolving anatomical features at subcellular spatial resolution, (iii) biomolecular profiling and discrimination of wild type and ΔRD1 mutant Mycobacterium marinum strains in a zebrafish embryo model of tuberculosis and (iv) in vivo temporal monitoring of the wound response in living zebrafish embryos. Overall, this study demonstrates the application of confocal Raman spectroscopic imaging for the comparative bimolecular analysis of fully intact and living zebrafish embryos.
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http://dx.doi.org/10.1038/s41467-020-19827-1 | DOI Listing |
Comp Biochem Physiol C Toxicol Pharmacol
September 2025
Department of Biological Sciences, Clemson University, Clemson, SC, USA; Clemson University Center for Human Genetics, Greenwood, SC, USA. Electronic address:
Tetrabromobisphenol A (TBBPA), a widely used flame retardant in textiles and electronics, poses toxicological risks through both environmental and indoor exposures. Biomonitoring studies have detected significant TBBPA levels in prenatal environments, including cord blood, raising concerns about developmental impacts. Using zebrafish as a model, this study addresses critical gaps in understanding how developmental TBBPA exposures perturb regulatory pathways that govern dorsoventral patterning.
View Article and Find Full Text PDFACS Omega
September 2025
Department of Biochemistry and Molecular Biology, Guangdong Medical University, Zhanjiang 524023, China.
Corrole-based photosensitizers show great potential for tumor photodynamic therapy (PDT). While their photodynamic activity has been extensively studied at the cellular level, evaluation in mouse xenograft models remains challenging due to prolonged experimental timelines, complex drug administration, and high costs. To address these limitations, we developed a novel hepatocellular carcinoma model using wild-type AB zebrafish embryos as a xenograft platform.
View Article and Find Full Text PDFToxicol Rep
December 2025
Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, Sagamihara 252-5258, Japan.
Zebrafish embryos are widely used in developmental toxicity testing. However, the extent to which genetic background influences susceptibility to teratogenic compounds remains incompletely understood. We here evaluated inter-strain variability in both phenotypic and transcriptomic responses to six model teratogens using five commonly utilized zebrafish strains, AB, TU, RW, WIK, and PET.
View Article and Find Full Text PDFiScience
September 2025
Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia.
5-Ethynyl-2'-deoxyuridine (EdU) has revolutionized DNA replication and cell cycle analyses through fast, efficient click chemistry detection. However, commercial EdU kits suffer from high costs, proprietary formulations, limited antibody multiplexing capabilities, and difficulties with larger biological specimens. Here, we present OpenEMMU (Open-source EdU Multiplexing Methodology for Understanding DNA replication dynamics), an optimized, affordable, and user-friendly click chemistry platform utilizing off-the-shelf reagents.
View Article and Find Full Text PDFGene Expr Patterns
September 2025
Experimental Research Center, QingPu Hospital Affiliated to Fudan University, Shanghai, China.
The SH2B family, which includes SH2B1, SH2B2, and SH2B3, consists of adaptor proteins that possess conserved Src homology 2 (SH2) and pleckstrin homology (PH) domains, playing essential roles as signaling mediators. However, the gene expression patterns of this family during embryonic development are still mostly unclear. In this study, we first investigated the evolutionary conservation of SH2B across multiple species using phylogenetic analysis, which revealed high sequence homology between zebrafish Sh2b and its orthologs in other vertebrates.
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