Cell Biology

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    Protocols in Current Issue
    Brain-localized and Intravenous Microinjections in the Larval Zebrafish to Assess Innate Immune Response
    Authors:  Alison M. Rojas and Celia E. Shiau, date: 04/05/2021, view: 1900, Q&A: 0
    [Abstract]

    Creating a robust and controlled infection model is imperative for studying the innate immune response. Leveraging the particular strengths of the zebrafish model system, such as optical transparency, ex utero development, and large clutch size, allows for the development of methods that yield consistent and reproducible results. We created a

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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: 1447, 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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    Mechanical Tissue Compression and Whole-mount Imaging at Single Cell Resolution for Developing Murine Epididymal Tubules
    Author:  Tsuyoshi Hirashima, date: 08/05/2020, view: 1802, Q&A: 0
    [Abstract] Cells inside the body are subjected to various mechanical stress, such as stretch or compression provided by surrounding cells, shear stresses by blood or lymph flows, and normal stresses by luminal liquids. Force loading to the biological tissues is a fundamental method to better understand cellular responses to such mechanical stimuli. There ...
    Method for Measuring Mucociliary Clearance and Cilia-generated Flow in Mice by ex vivo Imaging
    Authors:  Eric Song and Akiko Iwasaki, date: 03/20/2020, view: 2150, Q&A: 0
    [Abstract] Ex vivo biophysical measurements provide valuable insights into understanding both physiological and pathogenic processes. One critical physiological mechanism that is regulated by these biophysical properties is cilia-generated flow that mediates mucociliary clearance, which is known to provide protection against foreign particles and ...
    Characterization of Biological Motion Using Motion Sensing Superpixels
    Authors:  Felix Y. Zhou, Carlos Ruiz-Puig, Richard P. Owen, Michael J. White, Jens Rittscher and Xin Lu, date: 09/20/2019, view: 2961, Q&A: 0
    [Abstract] Precise spatiotemporal regulation is the foundation for the healthy development and maintenance of living organisms. All cells must correctly execute their function in the right place at the right time. Cellular motion is thus an important dynamic readout of signaling in key disease-relevant molecular pathways. However despite the rapid ...
    A Novel Technique for Imaging and Analysis of Hair Cells in the Organ of Corti Using Modified Sca/eS and Machine Learning
    [Abstract] Here, we describe a sorbitol-based optical clearing method, called modified Sca/eS that can be used to image all hair cells (HCs) in the mouse cochlea. This modification of Sca/eS is defined by three steps: decalcification, de-lipidation, and refractive index matching, which can all be completed within 72 h. Furthermore, we established automated ...
    Looking through Brains with Fast Passive CLARITY: Zebrafish, Rodents, Non-human Primates and Humans
    Authors:  Farzad Mortazavi, Alexander J. Stankiewicz and Irina V. Zhdanova, date: 08/05/2019, view: 5367, Q&A: 0
    [Abstract] Recently developed CLARITY (Clear Lipid-exchanged Acrylamide-hybridized Rigid Imaging/Immunostaining/In situ-hybridization-compatible Tis-sue-hYdrogel) technique renders the tissue transparent by removing lipids in the tissue, while preserving and stabilizing the cellular and subcellular structures. This provides effective penetration of diverse ...
    Immunofluorescence Staining of WT-1/Podocalyxin on Mouse Kidney Sections
    Authors:  Carole Henique, Olivia Lenoir and Pierre-Louis Tharaux, date: 04/20/2019, view: 3743, Q&A: 0
    [Abstract] In glomerular diseases, podocytes are one type of cells involved in dysfunction of glomerular filtration. In these conditions, podocyte proteins expression change. Therefore, immunofluorescent staining of podocytes can be performed to visualize podocyte localization of proteins of interest. In this protocol, we detail a method to stain podocytes ...
    A Method for Culturing Mouse Whisker Follicles to Study Circadian Rhythms ex vivo
    Authors:  Atsuhiro Nishida, Yoshiki Miyawaki, Koichi Node and Makoto Akashi, date: 01/20/2019, view: 3425, Q&A: 0
    [Abstract] Ex vivo tissue-culture experiments are often performed in the field of circadian biology. The major aim of these experiments is to evaluate circadian characteristics such as period length at the tissue-autonomous level by monitoring clock gene expression in real time. This culture method is also used to examine the tissue specificity of ...
    An Image Analysis Pipeline to Quantify Emerging Cracks in Materials or Adhesion Defects in Living Tissues
    Authors:  Stéphane Verger, Guillaume Cerutti and Olivier Hamant, date: 10/05/2018, view: 4080, Q&A: 0
    [Abstract] Microcracks in materials reflect their mechanical properties. The quantification of the number or orientation of such cracks is thus essential in many fields, including engineering and geology. In biology, cracks in soft tissues can reflect adhesion defects, and the analysis of their pattern can help to deduce the magnitude and orientation of ...



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