Developmental Biology

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    Protocols in Current Issue
    Co-differentiation and Co-maturation of Human Cardio-pulmonary Progenitors and Micro-Tissues from Human Induced Pluripotent Stem Cells
    Authors:  Wai Hoe Ng, Barbie Varghese and Xi Ren, date: 08/20/2022, view: 1109, Q&A: 0
    [Abstract]

    Currently, there are several in vitro protocols that focus on directing human induced pluripotent stem cell (hiPSC) differentiation into either the cardiac or pulmonary lineage. However, these systemsprotocols are unable to recapitulate the critical exchange of signals and cells between the heart and lungs during early development. To address

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    Quantitative Live Confocal Imaging in Aquilegia Floral Meristems
    Authors:  Ya Min, Stephanie J. Conway and Elena M. Kramer, date: 06/20/2022, view: 1398, Q&A: 0
    [Abstract]

    In this study, we present a detailed protocol for live imaging and quantitative analysis of floral meristem development in Aquilegia coerulea, a member of the buttercup family (Ranunculaceae). Using confocal microscopy and the image analysis software MorphoGraphX, we were able to examine the cellular growth dynamics during floral organ primordia

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    Total Nucleic Acid Extraction from Single Zebrafish Embryos for Genotyping and RNA-seq
    Authors:  Neha Wali, Munise Merteroglu, Richard J. White and Elisabeth M. Busch-Nentwich, date: 01/05/2022, view: 2107, Q&A: 0
    [Abstract]

    RNA sequencing allows for the quantification of the transcriptome of embryos to investigate transcriptional responses to various perturbations (e.g., mutations, infections, drug treatments). Previous protocols either lack the option to genotype individual samples, or are laborious and therefore difficult to do at a large scale. We have developed a

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    Whole-mount Immunohistochemistry to Visualize Mouse Embryonic Dermal Lymphatic Vasculature
    Authors:  Xin Geng and R. Sathish Srinivasan, date: 10/20/2021, view: 1262, Q&A: 0
    [Abstract]

    Lymphatic vessels are abundant in the skin where they regulate interstitial fluid uptake and immune surveillance. Defects in dermal lymphatic vessels, such as fewer vessels and abnormal lymphatic vessel coverage with mural cells, are frequently associated with lymphedema and other lymphatic disorders. Whole-mount immunohistochemistry allows the

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    Inter-species Transplantation of Blastocysts between Medaka and Zebrafish
    Authors:  Jana F. Fuhrmann, Jasmin Onistschenko and Lázaro Centanin, date: 09/20/2021, view: 1587, Q&A: 0
    [Abstract]

    Transplantation of blastocysts from a donor to a host blastula constitutes a powerful experimental tool to tackle major developmental biology questions. The technique is widely implemented in diverse biological models including teleost fish, where it is typically used for intra-species blastula transplantations – i.e., labeled blastocysts

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    Rice Root Hair Phenotypes Imaged by Cryo-SEM
    [Abstract]

    Cryo-scanning electron microscopy (cryo-SEM) was first introduced for scientific use in the 1980s. Since then, cryo-SEM has become a routine technique for studying the surfaces and internal structures of biological samples with a high water content. In contrast to traditional SEM, cryo-SEM requires no sample pretreatment processes; thus, we can

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    Quantitation of Secretory Granule Size in Drosophila Larval Salivary Glands
    Authors:  Cheng-I J. Ma and Julie A. Brill, date: 06/05/2021, view: 2303, Q&A: 0
    [Abstract]

    Maturation of secretory granules is a crucial process that ensures the bioactivity of cargo proteins undergoing regulated secretion. In Drosophila melanogaster, the larval salivary glands produce secretory granules that are up to four-fold larger in cross-sectional area after maturation. Therefore, we developed a live imaging microscopy approach

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    Generation of Mouse Pluripotent Stem Cell-derived Trunk-like Structures: An in vitro Model of Post-implantation Embryogenesis
    [Abstract]

    Post-implantation mammalian embryogenesis involves profound molecular, cellular, and morphogenetic changes. The study of these highly dynamic processes is complicated by the limited accessibility of in utero development. In recent years, several complementary in vitro systems comprising self-organized assemblies of mouse embryonic stem cells, such

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    Measuring Bone Volume at Multiple Densities by Micro-computed Tomography
    Authors:  Emma C. Walker, Narelle E. McGregor, Audrey S. M. Chan and Natalie A. Sims, date: 01/05/2021, view: 2847, Q&A: 0
    [Abstract]

    Bone strength is controlled by both bone mass, and the organization and quality of the bone material. The current standard method for measuring bone mass in mouse and rat studies is micro-computed tomography. This method typically uses a single threshold to identify bone material in the cortical and trabecular regions. However, this single

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    Chromatin Immunoprecipitation (ChIP) to Assess Histone Marks in Auxin-treated Arabidopsis thaliana Inflorescence Tissue
    Authors:  André Kuhn and Lars Østergaard, date: 12/05/2020, view: 2666, Q&A: 0
    [Abstract] Chromatin immunoprecipitation coupled with quantitative PCR (ChIP-qPCR) or high-throughput sequencing (ChIP-seq) has become the gold standard for the identification of binding sites of DNA binding proteins and the localization of histone modification on a locus-specific or genome-wide scale, respectively. ChIP experiments can be divided into seven ...



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