Mucociliiary Transport; Cell growth, differentiation and development; Cytoskeleton and cell motility; Molecular and Cellular Biology; Signal Transduction
Our lab is involved in two major projects: 1) Cell motility research – mucociliary transport. We have developed a series of real “models” or simplifications of the respiratory mucociliary epithelium (primary cultures, isolated epithelial sheets, isolated ciliated cells, demembranated and MgATP-reactivated cell models, and isolated, demembranated and reactivated ciliary axonemes) that allow one to study mucociliary transport at number of levels of organization. We have studied these models using biochemical methods, stroboscopic imaging, high speed image analysis, and EM to analyze the control of the beat frequency, waveform and coordination of respiratory cilia. We have developed correlative LM/EM methods and correlative live/immunofluorescence methods for this purpose. These studies have import for 1) detecting and understanding abnormal parameters of ciliary function, as in primary ciliary diskinesis (PCD) 2) for the testing of exogenous agents (drugs, environmental agents, etc.) on mucociliary transport. 2) Along with 4 other UB labs in Chemistry and Engineering, plus 1 lab in Head and Neck Surgery Dept. at Roswell Park, our lab is involved in an interdisciplinary project to develop a “high tech bandage” that is doped with tissue specific growth factors and cytokines that can be released with full activity and at known rates to stimulate wound healing in scrape and burn types of acute (and potentially, chronic) injuries. These agents are selected to promote: a) the motogenic and mitogenic activity of epithelia and b) blood vessel formation. Our lab specifically is responsible for the in-vitro testing of doped membranes for their ability to promote wound closure (re-epithelialization of 9 mm wounds) in a human epidermal cell line by image analysis of wound closure kinetics and cell division and cell death rates. We also are responsible for the in-vivo testing of such membranes in animals using a porcine burn model to assay inflammation, epithelial closure rates, blood vessel formation, and inflammation. As a faculty member and Co-Director of one of the oldest biological imaging courses in the U.S. (Optical Microscopy and Imaging in the Biomedical Sciences Course, Marine Biology Laboratory, Woods Hole, MA) my lab frequently is asked to help other researchers with digital imaging problems and has contributed computerized digital image analyses in a number of scientific publications.