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  • Advanced Optics Lab

    Lab Website
    Principal Investigator:
    Scot Kuo, Ph.D.
    Biomedical Engineering

    The Advanced Optics Lab uses innovative optical tools, including laser-based nanotechnologies, ...to understand cell motility and the regulation of cell shape. We pioneered laser-based nanotechnologies, including optical tweezers, nanotracking, and laser-tracking microrheology. Applications range from physics, pharmaceutical delivery by phagocytosis (cell and tissue engineering), bacterial pathogens important in human disease and cell division.

    Other projects in the lab are related to microscopy, specifically combining fluorescence and electron microscopy to view images of the subcellular structure around proteins.
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    Research Areas: optics, microscopy, physics, cellular biology, imaging, nanotechnology, drugs, tissue engineering
  • Fuchs Laboratory

    Lab Website

    The Fuchs Laboratory uses cellular electrophysiology, immunolabeling and electron microscopy to... study synaptic connections between sensory hair cells and neurons in the cochlea. One effort focuses on an unusual cholinergic receptor that mediates efferent inhibition of hair cells, driving discovery of the molecular mechanisms, and offering a target for protection against acoustic trauma. A second topic concerns the small number of unmyelinated "type II" afferent neurons whose synaptic connectivity and response properties argue for a role as the pathway for noxious (too loud) sound. Our studies are motivated by curiosity about fundamental mechanisms, and to provide a foundation for understanding cochlear pathogenesis. view more

    Research Areas: synaptic connections, immunolabeling, neurons, elecrophysiology, audiology, cellular electrophysiology, hearing loss, electron microscopy, cochlea, cochlear pathogensesis
  • Jean Kim Lab

    The Jean Kim Laboratory performs translational research in the
    area of chronic rhinosinusitis,... with a niche interest in the pathogenesis of hyperplastic nasal
    polyposis. Studies encompass clinical research to basic wet laboratory research in
    studying the underlying immune and autoimmune mediated mechanism of polyp growth and
    perpetuation of disease. Human cell and tissue culture models are used. Techniques in the
    laboratory include cell and tissue culture, real time PCR, immunoblot, ELISA, flow cytometry,
    immunohistochemistry, electron microscopy, gene array analysis, and other molecular
    approaches including genetic knockdowns. Approaches used in Dr. Kim’s clinical study
    designs include prospective and retrospective analysis of patient outcomes and clinical
    biomarkers, as wells controlled clinical trials.
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    Research Areas: nasal polyps, chronic rhinosinusitis, hyperplastic nasal polyposis
  • Lee Martin Laboratory

    Lab Website
    Principal Investigator:
    Lee Martin, Ph.D.
    Pathology

    In the Lee Martin Laboratory, we are testing the hypothesis that selective vulnerability--the p...henomenon in which only certain groups of neurons degenerate in adult onset neurological disorders like amyotrophic lateral sclerosis and Alzheimer's disease--is dictated by brain regional connectivity, mitochondrial function and oxidative stress. We believe it is mediated by excitotoxic cell death resulting from abnormalities in excitatory glutamatergic signal transduction pathways, including glutamate transporters and glutamate receptors as well as their downstream intracellular signaling molecules.

    We are also investigating the contribution of neuronal/glial apoptosis and necrosis as cell death pathways in animal (including transgenic mice) models of acute and progressive neurodegeneration. We use a variety of anatomical and molecular neurobiological approaches, including neuronal tract-tracing techniques, immunocytochemistry, immunoblotting, antipeptide antibody production, transmission electron microscopy and DNA analysis to determine the precise regional and cellular vulnerabilities and the synaptic and molecular mechanisms that result in selective neuronal degeneration.
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    Research Areas: ALS, neurodegeneration, selective vulnerability, cell death, Alzheimer's disease
  • Mark Donowitz Lab

    Lab Website
    Principal Investigator:
    Mark Donowitz, M.D.
    Medicine

    Research in the Mark Donowitz Lab is primarily focused on the development of drug therapy for d...iarrheal disorders, intestinal salt absorption and the proteins involved including their regulation, and the use of human enteroids to understand intestinal physiology and pathophysiology. We study two gene families initially recognized by this laboratory: mammalian Na/H exchangers and the subgroup of PDZ domain containing proteins present in the brush border of epithelial cells called NHERF family. A major finding is that NHE3 exists simultaneously in different sized complexes in the brush border, which change separately as part of signal transduction initiated by mimics of the digestive process. Relevance to the human intestine is being pursued using mini-human intestine made from Lgr5+ stems cells made from intestinal biopsies and measuring function via two-photon microscopy. view more

    Research Areas: gastrointestinal system, gastroenterology, pathophysiology, diarrhea, drugs, physiology
  • Nicholas Zachos Lab

    Principal Investigator:
    Nicholas Zachos, Ph.D.
    Medicine

    Researchers in the Nicholas Zachos Lab work to understand variations in protein trafficking tha...t occur during pathophysiological conditions that cause ion and water transport that result in diarrhea. We recently identified a clathrin-independent endocytic pathway responsible for elevated intracellular calcium-mediated inhibition of NHE3 activity in intestinal epithelial cells. We use advanced imaging techniques, including confocal and multi-photon microscopy, to characterize protein trafficking of intestinal transporters. We also perform functional assays using fluorescent probes (ratiometric and non-ratiometric) to measure ion transport in cell culture models, intact intestinal tissues and human small intestinal enteroids. view more

    Research Areas: imaging, protein trafficking, diarrhea, bioinformatics, molecular biology
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