Biological Sciences

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  • Author:
    Jenna R. Davidson
    Advisory Committee:
    Neil F. Lobo
    Degree Area:
    Biological Sciences
    Degree:
    Doctor of Philosophy
    Defense Date:
    2019-03-22
  • Author(s):
    Yide Zhang
    Abstract:

    In cancer and all biomedical researches, we always need a microscope with better imaging precision, speed, functionality, and depth, so that the diagnostics and treatments of cancer and other diseases can be accurate, fast, and noninvasive. However, conventional fluorescence microscopes cannot satisfy these needs due to physical limits on resolution, speed, information, and depth. In this work, we aim to overcome these limits using novel super-resolution microscopy and high-speed quantitative…

    Date Created:
    2018-04-09
    Resource Type
    Presentation
  • Author(s):
    Yide Zhang, Scott S. Howard, Cody J. Smith
    Abstract:

    Super-resolution microscopy is broadening our in-depth understanding of cellular structure. However, super-resolution approaches are limited, for numerous reasons, from utilization in longer-term intravital imaging. We devised a combinatorial imaging technique that combines deconvolution with stepwise optical saturation microscopy (DeSOS) to circumvent this issue and image cells in their native physiological environment. Other than a traditional confocal or two-photon microscope, this approac…

    Date Created:
    2019-01-09
    Resource Type
    Software
  • Author:
    Shireen Jayman
    Advisory Committee:
    Crislyn D'Souza-Schorey
    Degree Area:
    Biological Sciences
    Degree:
    PhD
    Defense Date:
    2018-11-05
  • Author:
    Cheyenne Caci Tait
    Advisory Committee:
    Sunny K. Boyd, Zainulabeuddin Syed, Shannon B. Olsson, Jeffrey L. Feder, Michael Pfrender
    Degree Area:
    Biological Sciences
    Degree:
    PhD
    Defense Date:
    2018-11-16
  • Author:
    Mary M. Glover
    Advisory Committee:
    Jeffrey L. Feder, Stewart Berlocher, Elizabeth Archie, Michael Pfrender
    Degree Area:
    Biological Sciences
    Degree:
    PhD
    Defense Date:
    2018-08-13
  • Author:
    Amanda N. Marra
    Advisory Committee:
    Rebecca A. Wingert
    Degree Area:
    Biological Sciences
    Degree:
    PhD
    Defense Date:
    2018-10-23
  • Author(s):
    Yumiko Tokusumi, Tsuyoshi Tokusumi, Robert A. Schulz
    Abstract:

    Acute inflammation can cause serious tissue damage and disease in physiologically-challenged organisms. The precise mechanisms leading to these detrimental effects remain to be determined. In this study, we utilize a reproducible means to induce cellular immune activity in Drosophila larvae in response to mechanical stress. That is, forceps squeeze-administered stress induces lamellocytes, a defensive hemocyte type that normally appears in response to wasp infestation of larvae. The posterior…

    Date Published:
    2018-07
  • Author(s):
    Jeremy Fein, Clayton Johnson, Joshua Shrout
    Abstract:

    Understanding metal sorption to bacteria is important for developing bioremediation strategies, for determining the fate of contaminants in ground water systems, and for defining controls on microbial metabolic processes in the environment. X-ray absorption spectroscopy (XAS) has been the only technique available for quantifying and mapping metal sorption to bacteria on an individual cell scale, but the XAS approach is time consuming and expensive, and quantitative mapping of the distribution…

    Date Published:
    2018-04
  • Author(s):
    Md Suhail Alam, Bruce Cooper, Kasturi Halder
    Abstract:

    Histone deacetylase (HDAC) inhibitors are of significant interest as drugs. However, their use in neurological disorders has raised concern because HDACs are required for brain function. We have previously shown that a triple combination formulation (TCF) of the pan HDACi vorinostat (Vo) improves pharmacokinetic exposure and entry of Vo into the brain. TCF treatment significantly delayed both neurodegeneration and death in the Npc1nmf164 murine model of Niemann Pick Type C (NPC) disease. The …

    Date Published:
    2017-09
  • Author(s):
    Manuela Lahne, Clare E. Yarka, Michael E. Petravick, Jingling Li, David R. Hyde
    Abstract:

    Sox2 is a well-established neuronal stem cell-associated transcription factor that regulates neural development and adult neurogenesis in vertebrates, and is one of the critical genes used to reprogram differentiated cells into induced pluripotent stem cells. We examined if Sox2 was involved in the early reprogramming-like events that Müller glia undergo as they upregulate many pluripotency- and neural stem cell-associated genes required for proliferation in light-damaged adult zebrafish reti…

    Date Published:
    2017-08
  • Author(s):
    Cassandra L. Gorsuch, Patrick Fagan, Chan Lee, Sun Eun Kim, Jens C. Hamann, Joshua A. Mason, Kelsey J. Weigel, Matyas Abel Tsegaye, Luqun Shen, Sydney Shuff, Junjun Zuo, Stephan Hu, Lei jJiang, Sarah Chapman, W. Matthew Leevy, Ralph J. DeBerardinis, Michael Overholtzer, Zachary T. Schafer
    Abstract:

    For cancer cells to survive during extracellular matrix (ECM) detachment, they must inhibit anoikis and rectify metabolic deficiencies that cause non-apoptotic cell death. Previous studies in ECM-detached cells have linked non-apoptotic cell death to reactive oxygen species (ROS) generation, although the mechanistic underpinnings of this link remain poorly defined. Here, we uncover a role for receptor-interacting protein kinase 1 (RIPK1) in the modulation of ROS and cell viability during ECM …

    Date Published:
    2018-03