Developmental Biology

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    Protocols in Current Issue
    Mouse Embryonic Tooth Germ Dissection and Ex vivo Culture Protocol
    Authors:  Xue Han, Keigo Yoshizaki, Tian Tian, Kanako Miyazaki, Ichiro Takahashi and Satoshi Fukumoto, date: 02/05/2020, view: 291, Q&A: 1
    [Abstract] A tooth germ ex vivo organ culture allows visualization of its development in different stages, thus enabling investigation of the molecular mechanisms of regulatory factors. Tooth germs can be rapidly dissected from E13 mouse embryos and placed on cell culture inserts for observation of subsequent tooth germ development in a ...
    3D Organoid Formation from the Murine Salivary Gland Cell Line SIMS
    Authors:  Harleen K. Athwal and Isabelle M. A. Lombaert, date: 10/05/2019, view: 908, Q&A: 0
    [Abstract] Salivary glands consist of multiple phenotypically and functionally unique cell populations, such as the acinar, ductal, and myoepithelial cells that help produce, modify, and secrete saliva (Lombaert et al., 2011). Identification of mechanisms and factors that regulate these populations has been of key interest, as salivary gland-related ...
    Reconstituting Breast Tissue with Organotypic Three-dimensional Co-culture of Epithelial and Stromal Cells in Discontinuous Extracellular Matrices
    Authors:  Gang Ren, Vandana Sharma, Joshua Letson, Yashna Walia, Veani Fernando and Saori Furuta, date: 10/05/2019, view: 731, Q&A: 0
    [Abstract] Co-culture systems utilizing reconstituted or synthetic extracellular matrix (ECM) and micropatterning techniques have enabled the reconstruction of surface epithelial tissues. This technique has been utilized in the regeneration, disease modeling and drug screening of the surface epithelia, such as the skin and esophagus. On the other hand, the ...
    A Widely Applicable Urea-based Fluorescent/Colorimetric mRNA in situ Hybridization Protocol
    Author:  Chiara Sinigaglia, date: 09/05/2019, view: 1328, Q&A: 0
    [Abstract] In situ hybridization methods are routinely employed to detect nucleic acid sequences, allowing to localize gene expression or to study chromosomal organization in their native context. These methods rely on the pairwise binding of a labeled probe to the target endogenous nucleic acid sequence–the hybridization step, followed by detection ...
    Detection of mRNA by Whole Mount in situ Hybridization and DNA Extraction for Genotyping of Zebrafish Embryos
    Authors:  Rachna Narayanan and Andrew C. Oates, date: 03/20/2019, view: 3927, Q&A: 0
    [Abstract] In situ hybridization is used to visualize the spatial distribution of gene transcripts in tissues and in embryos, providing important information about disease and development. Current methods involve the use of complementary riboprobes incorporating non-radioactive labels that can be detected by immunohistochemistry and coupled to ...
    A Functionally Robust Phenotypic Screen that Identifies Drug Resistance-associated Genes Using 3D Cell Culture
    Authors:  Sun-Young Lee and Mina J. Bissell, date: 11/20/2018, view: 2410, Q&A: 0
    [Abstract] Drug resistance is a major obstacle in cancer treatment: A case in point is the failure of cancer patients to respond to tyrosine kinase inhibitors (TKI) of EGFR, a receptor that is highly expressed in many cancers. Identification of the targets and delineation of mechanisms of drug resistance remain major challenges. Traditional pharmacological ...
    Mosaic Labeling and 3-Dimensional Morphological Analysis of Single Cells in the Zebrafish Left-right Organizer
    Authors:  Agnik Dasgupta, Andrew E. Jacob and Jeffrey D. Amack, date: 11/20/2018, view: 2198, Q&A: 0
    [Abstract] A transient epithelial structure called the left-right organizer (LRO) establishes left-right asymmetry in vertebrate embryos. Developmental defects that alter LRO formation result in left-right patterning errors that often lead to congenital heart malformations. However, little is known about mechanisms that regulate individual cell behaviors ...
    Optical Clearing and Index Matching of Tissue Samples for High-resolution Fluorescence Imaging Using SeeDB2
    Authors:  Meng-Tsen Ke and Takeshi Imai, date: 10/20/2018, view: 4619, Q&A: 1
    [Abstract] Tissue clearing techniques are useful for large-scale three-dimensional fluorescence imaging of thick tissues. However, high-resolution imaging deep inside tissues has been challenging, as it is extremely sensitive to light scattering and spherical aberrations. Here, we present a water-based optical clearing and mounting media, SeeDB2, which is ...
    Live Confocal Imaging of Brachypodium Spikelet Meristems
    Author:  Devin Lee O'Connor, date: 09/20/2018, view: 2569, Q&A: 0
    [Abstract] Live confocal imaging of fluorescent reporters and stains in plant meristems provides valuable measurements of gene expression, protein dynamics, cell polarity, cell division, and growth. The spikelet meristem in the grass Brachypodium distachyon (Brachypodium) is well suited to live imaging because of the ease of dissection, small ...
    Mouse Mammary Gland Whole Mount Preparation and Analysis
    Authors:  Cornelia Tolg, Mary Cowman and Eva A. Turley, date: 07/05/2018, view: 7905, Q&A: 0
    [Abstract] The mammary gland undergoes extensive remodeling during pregnancy and is also subject to neoplastic processes both of which result in histological changes of the gland epithelial structure. Since the mammary tree is a complex three-dimensional structure a method is needed that provides an overview of the entire gland. Whole mounts provide this ...



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