Protocols in Current Issue
    Measurement of Respiration Rate in Live Caenorhabditis elegans
    Authors:  Li Fang Ng and Jan Gruber, date: 05/20/2019, view: 444, Q&A: 0
    [Abstract] Mitochondrial function and dysfunction are at the core of aging and involved in many age-dependent diseases. Rate of oxygen consumption is a measure of mitochondrial function and energy production rate. The nematode Caenorhabditis elegans (C. elegans) offers an opportunity to study “living” mitochondria without the need for ...
    Heterochronic Phenotype Analysis of Hypodermal Seam Cells in Caenorhabditis elegans
    Authors:  Yon Ju Ji and Jiou Wang, date: 01/05/2019, view: 1047, Q&A: 0
    [Abstract] Heterochrony refers to changes in the timing of developmental events, and it is precisely regulated in the organisms by the heterochronic genes such as C. elegans lin-4 and let-7. Mutations in these genes cause precocious or retarded development of certain cell lineages. With well-defined cell lineages, C. elegans ...
    Microirradiation for Precise, Double-strand Break Induction in vivo in Caenorhabditis elegans
    Authors:  Kailey E. Harrell, Emily Koury and Sarit Smolikove, date: 12/20/2018, view: 1141, Q&A: 0
    [Abstract] DNA double-strand breaks (DSBs) are toxic lesions that every cell must accurately repair in order to survive. The repair of DSBs is an integral part of a cell life cycle and can lead to lethality if repaired incorrectly. Laser microirradiation is an established technique which has been used in yeast, mammalian cell culture, and Drosophila ...
    Preparation of Silk Fibroin Nanoparticles and Enzyme-Entrapped Silk Fibroin Nanoparticles
    Author:  Yu-Qing Zhang, date: 12/20/2018, view: 1371, Q&A: 0
    [Abstract] After silk fiber is degummed in boiling 0.2% Na2CO3 solution, the degummed fibroin fiber could be dissolved in highly concentrated neutral salts such as CaCl2. The partially degraded polypeptides of silk fibroin, commonly called as regenerated liquid silk, could be obtained via water dialysis. The silk fibroin ...
    Blinded Visual Scoring of Images Using the Freely-available Software Blinder
    Authors:  Steven D. Cothren, Joel N. Meyer and Jessica H. Hartman, date: 12/05/2018, view: 1090, Q&A: 0
    [Abstract] In nearly all subfields of biomedical sciences, there are phenotypes that are currently classified by expert visual scoring. In research applications, these classifications require the experimenter to be blinded to the treatment group in order to avoid unintentional bias in scoring. Currently, many labs either use laborious and tedious methods to ...
    Staining the Germline in Live Caenorhabditis elegans: Overcoming Challenges by Applying a Fluorescent-dye Feeding Strategy
    Author:  K. Adam Bohnert, date: 11/05/2018, view: 1295, Q&A: 0
    [Abstract] C. elegans provides a tractable model organism for studying germline cell biology. Microscopy experiments are relatively facile, as this worm is transparent and germline development can be observed in real-time using DIC microscopy and/or fluorescent transgenes. Despite these many tools, robust staining techniques for imaging germ cells ...
    Nuclear/Cytoplasmic Fractionation of Proteins from Caenorhabditis elegans
    Authors:  Alejandro Mata-Cabana, Olga Sin, Renée I. Seinstra and Ellen A. A. Nollen, date: 10/20/2018, view: 1838, Q&A: 0
    [Abstract] C. elegans is widely used to investigate biological processes related to health and disease. To study protein localization, fluorescently-tagged proteins can be used in vivo or immunohistochemistry can be performed in whole worms. Here, we describe a technique to localize a protein of interest at a subcellular level in C. elegans ...
    Filter Retardation Assay for Detecting and Quantifying Polyglutamine Aggregates Using Caenorhabditis elegans Lysates
    Authors:  Olga Sin, Alejandro Mata-Cabana, Renée I. Seinstra and Ellen A. A. Nollen, date: 10/05/2018, view: 1896, Q&A: 0
    [Abstract] Protein aggregation is a hallmark of several neurodegenerative diseases and is associated with impaired protein homeostasis. This imbalance is caused by the loss of the protein’s native conformation, which ultimately results in its aggregation or abnormal localization within the cell. Using a C. elegans model of polyglutamine diseases, we ...
    Maintenance of Schmidtea mediterranea in the Laboratory
    Authors:  Nídia de Sousa and Teresa Adell, date: 10/05/2018, view: 1198, Q&A: 0
    [Abstract] In the last years, planarians have emerged as a unique model animal for studying regeneration and stem cells biology. Although their remarkable regenerative abilities are known for a long time, only recently the molecular tools to understand the biology of planarian stem cells and the fundamentals of their regenerative process have been ...
    Detection of Cell Death in Planarians
    Authors:  Nídia de Sousa and Teresa Adell, date: 10/05/2018, view: 1401, Q&A: 0
    [Abstract] Planarians are freshwater flatworms, well known for their ability to regenerate a complete organism from any piece of their body. Furthermore, planarians are constantly growing and degrowing throughout their lives, maintaining a functional and proportioned body. These properties rely on the presence of a population of adult stem cells and on the ...

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