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    Fas and Fas Ligand in the Development of the Hematopoietic System: A Grant Proposal

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    Author
    Karolak, Matthew Ross
    Issue Date
    2010-05
    
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    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    Bone marrow failure is a condition that blocks normal hematopoiesis. Instead of producing functional blood and immune cells, bone marrow cells either cease to produce blood and immune cells altogether or, in some cases, produce non-functional cells in mass quantities, a condition known as leukemia. In the experiments described below, we seek to understand the basic mechanisms of normal hematopoiesis. It has been demonstrated that the death receptor Fas has non-apoptotic functions, including cell proliferation. In hematopoietic cells, Fas expression level does not correlate with susceptibility to Fas-mediated apoptosis. In T-lymphocytes, ligation of FasL, a typical inducer of cell death, has been shown to engage in reverse signaling that has stimulatory consequences on the cells. In HSPCs it is unknown whether reverse signaling from FasL or non-apoptotic Fas signaling occurs and is biologically relevant. Taken together, these observations support the hypothesis that: Fas and FasL, via autocrine stimulation, play a crucial role in the survival and proliferation of HSPCs during the establishment of a homeostatic hematopoietic system, Further insight into h e normally developing hematopoietic system can shed light on and improve the prognosis and treatment of bone marrow failure associated diseases. Specifically, discoveries from this proposed study can be translated to a wide variety of fields incuding bone marrow transplantation as well as cancer treatment and prevention.
    Type
    text
    Electronic Thesis
    Degree Name
    B.S.
    Degree Level
    bachelors
    Degree Program
    Honors College
    Molecular and Cellular Biology
    Degree Grantor
    University of Arizona
    Collections
    Honors Theses

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