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    Protocols in Current Issue
    Zebrafish Embryo Xenograft and Metastasis Assay
    Authors:  Ilkka Paatero, Sanni Alve, Silvia Gramolelli, Johanna Ivaska and Päivi M. Ojala, date: 09/20/2018, view: 381, Q&A: 0
    [Abstract] Xenograft models, and in particular the mouse xenograft model, where human cancer cells are transplanted into immunocompromised mice, have been used extensively in cancer studies. Although these models have contributed enormously to our understanding of cancer biology, the zebrafish xenograft model offers several advantages over the mouse model. ...
    How to Catch a Smurf? – Ageing and Beyond…
    In vivo Assessment of Intestinal Permeability in Multiple Model Organisms
    [Abstract] The Smurf Assay (SA) was initially developed in the model organism Drosophila melanogaster where a dramatic increase of intestinal permeability has been shown to occur during aging (Rera et al., 2011). We have since validated the protocol in multiple other model organisms (Dambroise et al., 2016) and have utilized the ...
    Medaka-microinjection with an Upright Microscope
    Authors:  Yu Murakami and Masato Kinoshita, date: 02/05/2018, view: 1298, Q&A: 0
    [Abstract] We described a simple method for microinjecting DNA/RNA/Protein solutions into medaka eggs under an upright microscope. Medaka is an excellent vertebrate model for reverse genetics, because of its daily spawning, short generation time, and egg transparency. These features enable us to efficiently perform functional genomic analyses of transgenic ...
    Fish Bile Clean-up for Subsequent Zymography and Mass Spectrometry Proteomic Analyses
    Author:  Rachel Ann Hauser-Davis, date: 01/20/2018, view: 1591, Q&A: 0
    [Abstract] Biliary excretion offers a way to analyze various contaminants in aquatic organisms, and fish bile has been used as a biomarker for environmental contamination. The use of the fish bile proteome as a tool for monitoring the impact of environmental contaminants has been recently validated. However, scarce studies in this context are available, and ...
    Genotyping-free Selection of Double Allelic Gene Edited Medaka Using Two Different Fluorescent Proteins
    Authors:  Yu Murakami, Satoshi Ansai, Akari Yonemura and Masato Kinoshita, date: 12/20/2017, view: 1668, Q&A: 0
    [Abstract] This protocol describes a simple genotyping using two different colors of fluorescent protein genes inserted at the target locus. This method makes it possible to determine the genotype of each individual simply by observing the fluorescence later than F1 generation.
    zPACT: Tissue Clearing and Immunohistochemistry on Juvenile Zebrafish Brain
    [Abstract] In studies of brain function, it is essential to understand the underlying neuro-architecture. Very young zebrafish larvae are widely used for neuroarchitecture studies, due to their size and natural transparency. However, this model system has several limitations, due to the immaturity, high rates of development and limited behavioral repertoire ...
    Bioluminescence Monitoring of Neuronal Activity in Freely Moving Zebrafish Larvae
    [Abstract] The proof of concept for bioluminescence monitoring of neural activity in zebrafish with the genetically encoded calcium indicator GFP-aequorin has been previously described (Naumann et al., 2010) but challenges remain. First, bioluminescence signals originating from a single muscle fiber can constitute a major pitfall. Second, ...
    Measuring Behavioral Individuality in the Acoustic Startle Behavior in Zebrafish
    Authors:  Carlos Pantoja, Adam Hoagland, Elizabeth Carroll, David Schoppik and Ehud Y. Isacoff, date: 04/05/2017, view: 3358, Q&A: 0
    [Abstract] The objective of this protocol is to provide a detailed description for the construction and use of a behavioral apparatus, the zBox, for high-throughput behavioral measurements in larval zebrafish (Danio rerio). The zBox is used to measure behavior in multiple individuals simultaneously. Individual fish are housed in wells of multi-well ...
    Transplantation of Mesenchymal Cells Including the Blastema in Regenerating Zebrafish Fin
    Authors:  Eri Shibata, Kazunori Ando and Atsushi Kawakami, date: 01/20/2017, view: 3553, Q&A: 0
    [Abstract] Regeneration of fish fins and urodele limbs occurs via formation of the blastema, which is a mass of mesenchymal cells formed at the amputated site and is essential for regeneration. The blastema transplantation, a novel technique developed in our previous studies (Shibata et al., 2016; Yoshinari et al., 2012) is a useful ...
    Various Modes of Spinal Cord Injury to Study Regeneration in Adult Zebrafish
    Authors:  Subhra Prakash Hui and Sukla Ghosh, date: 12/05/2016, view: 5075, Q&A: 0
    [Abstract] Spinal cord injury (SCI) in mammals leads to failure of both sensory and motor functions, due to lack of axonal regrowth below the level of injury as well as inability to replace lost neural cells and to stimulate neurogenesis. In contrast, fish and amphibians are capable of regenerating a variety of their organs like limb/fin, jaw, heart and ...