185 research outputs found

    The application of real-time PCR to the analysis of T cell repertoires

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    The diversity of T-cell populations is determined by the spectrum of antigen-specific T-cell receptors (TCRs) that are heterodimers of Ī± and Ī² subunits encoded by rearranged combinations of variable (AV and BV), joining (AJ and BJ), and constant region genes (AC and BC). We have developed a novel approach for analysis of Ī² transcript diversity in mice with a real-time PCR-based method that uses a matrix of BV- and BJ-specific primers to amplify 240 distinct BVā€“BJ combinations. Defined endpoints (Ct values) and dissociation curves are generated for each BVā€“BJ combination and the Ct values are consolidated in a matrix that characterizes the Ī² transcript diversity of each RNA sample. Relative diversities of BVā€“BJ combinations in individual RNA samples are further described by estimates of scaled entropy. A skin allograft system was used to demonstrate that dissection of repertoires into 240 BVā€“BJ combinations increases efficiency of identifying and sequencing Ī² transcripts that are overrepresented at inflammatory sites. These BVā€“BJ matrices should generate greater investigation in laboratory and clinical settings due to increased throughput, resolution and identification of overrepresented TCR transcripts

    Dr. Joseph Goldberger and Pellagra : His Life and Legacy

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    Laupus Library History Collections & the Department of Bioethics & Interdisciplinary Studies sponsor the History of Medicine Presentations as an educational service for the East Carolina University community. The Library hopes that the speakers and topics selected will promote a greater understanding of the historical and philosophical underpinnings of today's health care disciplines.Laupus Library History Collections & the Department of Bioethics & Interdisciplinary Studie
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