Graduate Seminar Series: Cell and Tissue Stream – Erik Jacques

Graduate Seminar Series: Cell and Tissue Stream
Graduate Seminar Series for the Institute of Biomedical Engineering (BME). This day is for cell and tissue stream presenters.
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Presentation Title: A 3D biomimetic culture assay models MuSC quiescence
Abstract: Adult skeletal muscle harbors a population of muscle stem cells (MuSCs) that are required to repair or reform multinucleated myofibers after tissue injury. In youth, MuSCs return to a reversible state of cell cycle arrest termed ‘quiescence’ after injury resolution. By contrast, a proportion of MuSCs in aged muscle remain in a semi-activated state, causing a premature response to subsequent injury cues that results in incomplete tissue repair and eventual stem cell depletion. Regulation of the balance between MuSC quiescence and activation in youth and in age may hold the key to restoring tissue homeostasis with age, but is incompletely understood. To fill this gap, we developed a simple and tractable in vitro method, with a 96-well footprint, to rapidly inactivate MuSCs freshly isolated from young skeletal muscle tissue, and return them to a quiescent-like state for at least one-week. This was achieved by introducing MuSCs into a three-dimensional (3D) bioartificial niche comprised of a thin sheet of multinucleated myotubes, which we iterate, and analyze temporally, to show that these in vivo niche features provide the minimal cues necessary to inactivate MuSCs and induce quiescence.
Supervisor Name: Dr. Penney Gilbert
Year of Study: 4
Program of Study: PhD
Zoom link: https://us02web.zoom.us/j/89610372821?pwd=azd4SCtYVWtreVovaGNPV1c2NGY2Zz09
Meeting ID: 896 1037 2821
Password: 483329
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