DEC 16, 2020 8:00 AM PST

Adding Dimensions to Multiplex Molecular Imaging

Sponsored by: Leica Microsystems
C.E. Credits: P.A.C.E. CE Florida CE
  • Elizabeth Garrett Chair of Convergent Bioscience Provost Professor, Departments of Molecular and Computational Biology, of Biomedical Engineering, and of Stem Cell Biology and Regenerative Me

      Professor Scott E. Fraser has a long-standing commitment to quantitative biology, applying the tools of chemistry, engineering, and physics to problems in biology and medicine. His personal research centers on imaging and molecular analyses of intact biological systems, with an emphasis on early development, organogenesis, and medical diagnostics. After training in physics (B.S., Harvey Mudd College, 1976) and biophysics (Ph.D., Johns Hopkins University, 1979), he joined the faculty at UC Irvine, and rose through the ranks to become Chair of the Department of Physiology and Biophysics. In 1990 he moved to Caltech to serve as the Anna L. Rosen Professor of Biology, and the Director of the Biological Imaging Center. He is deeply committed to interdisciplinary training and translational research, having helped found the Caltech Brain Imaging Center and the Kavli Institute of Nanoscience, as well as serving as the Director of the Rosen Center for Biological Engineering. In fall 2012, he moved to USC to take a Provost Professorship in the Dornsife College of Letters Arts and Sciences, the Children's Hospital Los Angeles, Keck School of Medicine and the Viterbi School of Engineering. He remains active in interdisciplinary research and serves as the Director of Science Initiatives for the USC campuses as well as co-directing USC's Bridge Institute with its Founding Director, Ray Stevens. A prolific author and inventor, Fraser has more than 240 peer-reviewed articles and more than 70 issued patents to his credit. He is the recipient of numerous honors and has been elected Fellow to the National Academy of Inventors, American Institute of Medical and Biological Engineers, American Academy of Arts and Science, American Association for the Advancement of Science, and the European Academy of Science.

    Date:  December 16, 2020
    Time: 8:00am (PST),  11:00am (EST)
    Molecular imaging of living specimens offers a means to draw upon the growing body of high-throughput molecular data to better understand the underlying cellular and molecular mechanisms of complex events ranging from embryonic development to disease processes. However, imaging approaches are challenged by unavoidable tradeoffs between spatial resolution, temporal resolution, field of view and the limited photon budget.
    We are attempting to advance this tradeoff by constructing faster and more efficient light sheet microscopes that maintain subcellular resolution. Our two-photon light-sheet microscope combines the deep penetration of two-photon microscopy and the speed of light sheet microscopy to generate images with more than ten-fold improved imaging speed and sensitivity. This combination of attributes permits 4D cell and molecular imaging with sufficient speed and resolution to generate unambiguous tracing of cells and signals in intact systems.
    To increase the 5th Dimension, the number of simultaneous labels, we are refining new multispectral image analysis tools that exceed the performance of our previous work on Linear Unmixing by orders of magnitude in speed, error propagation and accuracy. These new analysis tools permit rapid and unambiguous analyses of multiplex-labeled specimens.
    In parallel, we have refined label-free approaches so that imaging and sensing can be extended to patient-derived tissues and even human subjects. The low concentrations and low sensitivity of the techniques can make single cell approaches challenging. We are refining fluorescence lifetime approaches (FLIM), combining it with multispectral tools to optimize intravital imaging in these challenging settings.
    Learning Objectives
    • Clarify that biological imaging involves tradeoffs between resolution, speed, depth and field of view.
    • Demonstrate multiplex tools can increase the efficiency and the number of labels that can be imaged.
    • Recognize that fluorescence lifetime is a powerful but underused tool for intrinsic and extrinsic labels.
    • Outline how phasor approaches can offer more efficient processing, especially in low light conditions.
    Webinars will be available for unlimited on-demand viewing after live event.
    LabRoots is approved as a provider of continuing education programs in the clinical laboratory sciences by the ASCLS P.A.C.E. ® Program. By attending this webinar, you can earn 1 Continuing Education credit once you have viewed the webinar in its entirety.

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    Adding Dimensions to Multiplex Molecular Imaging

    Sponsored by: Leica Microsystems
    C.E. Credits: P.A.C.E. CE Florida CE


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