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    Nucl Med Biol. 2004 Nov;31(8):1021-31.

    Quantitation and visualization of tumor-specific T cells in the secondary lymphoid organs during and after tumor elimination by PET.

    Source

    Department of Pathology and Immunology, Washington University School of Medicine, 660 South Euclid Ave., St. Louis, MO 63110, USA.

    Abstract

    Increased understanding in the area of trafficking behavior of adoptively transferred tumor-specific T cells could help develop better therapeutic protocols. We utilized the DUC18/CMS5 tumor model system in conjunction with a microPET scanner to study the DUC18 T cell distribution pattern in spleens and lymph nodes in live mice. Anti-Thy1.2 antibodies conjugated to 1,4,7,10-tetraazacyclododecane-N,N',N'',N''-tetraacetic acid (DOTA) and radiolabeled with (64)Cu were administered to three groups of BALB-Thy1.1 mice on days 4, 7, or 14 post-DUC18 T cell transfer. We were able to detect the transferred cells in all the major lymph nodes, spleens, and in tumors. Our findings suggest that tumor-specific T cells do not all preferentially localize to the tumors but they also home to all the major lymphoid organs; additionally the number of DUC18 T cells remains relatively constant during and after tumor elimination within each lymphoid organ.

    PMID:
    15607484
    [PubMed - indexed for MEDLINE]

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