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Preparation of Drosophila Polytene Chromosomes, Followed by Immunofluorescence Analysis of Chromatin Structure by Multi-fluorescence Correlations

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Preparation of Drosophila Polytene Chromosomes, Followed by Immunofluorescence Analysis of Chromatin Structure by Multi-fluorescence Correlations

Authors: Terra M. Kuhn, Shawn C. Little and Maya Capelson, date: 07/05/2020, view: 108, Q&A: 0

Drosophila larval salivary gland polytene chromosome squashes have been used for decades to analyze genome-wide protein-binding patterns, transcriptional activation processes, and changes in chromatin structure at specific genetic loci. ...

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Preparation of Drosophila Polytene Chromosomes, Followed by Immunofluorescence Analysis of Chromatin Structure by Multi-fluorescence Correlations

Authors: Terra M. Kuhn, Shawn C. Little and Maya Capelson, date: 07/05/2020, view: 108, Q&A: 0

[Abstract] Drosophila larval salivary gland polytene chromosome squashes have been used for decades to analyze genome-wide protein-binding patterns, transcriptional activation processes, and changes in chromatin structure at specific genetic loci. There have been many evolutions of the squashing protocol over the years, with sub-optimal ...

Superresolution Microscopy of Drosophila Indirect Flight Muscle Sarcomeres

Authors: Szilárd Szikora, Tibor Novák, Tamás Gajdos, Miklós Erdélyi and József Mihály, date: 06/20/2020, view: 471, Q&A: 0

[Abstract] Sarcomeres are extremely highly ordered macromolecular assemblies where proper structural organization is an absolute prerequisite to the functionality of these contractile units. Despite the wealth of information collected, the exact spatial arrangement of many of the H-zone and Z-disk proteins remained unknown. Recently, we developed a powerful ...

Generation, Analyzing and in-vivo Drug Treatment of Drosophila Models with IBMPFD

Authors: Ting Zhang, Bruce A. Hay and Ming Guo, date: 05/20/2020, view: 516, Q&A: 0

[Abstract] Missense mutations of p97/cdc48/Valosin-containing protein (VCP) cause inclusion body myopathy, Paget disease with frontotemporal dementia (IBMPFD) and other neurodegenerative diseases. The pathological mechanism of IBMPFD is not clear and there is no treatment. We generated Drosophila models of IBMPFD in adult flight muscle in ...

Application of Mechanical Forces on Drosophila Embryos by Manipulation of Microinjected Magnetic Particles

Authors: Arturo D’Angelo and Jérôme Solon, date: 05/05/2020, view: 606, Q&A: 0

[Abstract] Cells generate mechanical forces to shape tissues during morphogenesis. These forces can activate several biochemical pathways and trigger diverse cellular responses by mechano-sensation, such as differentiation, division, migration and apoptosis. Assessing the mechano-responses of cells in living organisms requires tools to apply controlled local ...

Bimolecular Fluorescence Complementation (BiFC) for Studying Sarcomeric Protein Interactions in Drosophila

Authors: Océane Marescal, Frieder Schöck and Nicanor González-Morales, date: 04/05/2020, view: 583, Q&A: 0

[Abstract] Protein-protein interactions in Drosophila myofibrils are essential for their function and formation. Bimolecular Fluorescence Complementation (BiFC) is an effective method for studying protein interactions and localization. BiFC relies on the reconstitution of a monomeric fluorescent protein from two half-fragments when in proximity. Two ...

Phototactic T-maze Behavioral Assay for Comparing the Functionality of Color-sensitive Photoreceptor Subtypes in the Drosophila Visual System

Authors: Hunter S. Shaw, Joe Larkin and Yong Rao, date: 03/20/2020, view: 485, Q&A: 0

[Abstract] The Drosophila retina contains light-sensitive photoreceptors (R cells) with distinct spectral sensitivities that allow them to distinguish light by its spectral composition. R7 and R8 photoreceptors are important for color vision, and can be further classified into pale (p) or yellow (y) subtypes depending on the rhodopsin expressed. ...

Insect Feeding Assays with Spodoptera exigua on Arabidopsis thaliana

Authors: Yanrong You, Chunpeng An and Chuanyou Li, date: 03/05/2020, view: 757, Q&A: 0

[Abstract] Plant-insect interaction is an important field for studying plant immunity. The beet armyworm, Spodoptera exigua, is one of the best-known agricultural pest insects and is usually used to study plant interactions with chewing insects. Here, we describe a protocol for insect feeding assays with Spodoptera exigua lavae using model ...

ChIP-Seq from Limited Starting Material of K562 Cells and Drosophila Neuroblasts Using Tagmentation Assisted Fragmentation Approach

Authors: Junaid Akhtar, Piyush More and Steffen Albrecht, date: 02/20/2020, view: 668, Q&A: 0

[Abstract] Chromatin immunoprecipitation is extensively used to investigate the epigenetic profile and transcription factor binding sites in the genome. However, when the starting material is limited, the conventional ChIP-Seq approach cannot be implemented. This protocol describes a method that can be used to generate the chromatin profiles from as low as ...

Preparation of Red Palm Weevil Rhynchophorus Ferrugineus (Olivier) (Coleoptera: Dryophthoridae) Germ-free Larvae for Host-gut Microbes Interaction Studies

Authors: Abrar Muhammad, Prosper Habineza, Youming Hou and Zhanghong Shi, date: 12/20/2019, view: 1218, Q&A: 0

[Abstract] Red palm weevil (RPW), Rhynchophorus ferrugineus Olivier, is a devastating pest of palm trees worldwide. RPW gut is colonized by diverse bacterial species which profoundly influence host development and nutritional metabolism. However, the molecular mechanisms behind the interactions between RPW and its gut microbiota remain mostly ...

Measurement of Mitotic Spindle Angle and Mitotic Cell Distance in Fixed Tissue of Drosophila Larval Brains

Authors: Maribel Franco and Ana Carmena, date: 11/20/2019, view: 979, Q&A: 0

[Abstract] The positioning and the cleavage plane orientation of mitotic cells in pseudostratified epithelia (PSE) must be tightly regulated since failures in any of these processes might have fatal consequences during development. Here we present a simple method to determine the spindle orientation as well as the positioning of neuroepithelial mitotic cells ...

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