Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
Straten, PT; Guldberg, P; Schrama, D; Andersen, MH; Moerch, U; Seremet, T; Siedel, C; Reisfeld, RA; Becker, JC.
In situ cytokine therapy: redistribution of clonally expanded T cells
EUR J IMMUNOL. 2001; 31(1): 250-258.
Doi: 10.1002/1521-4141(200101)31:1<250::AID-IMMU250>3.0.CO;2-8
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- Führende Autor*innen der Med Uni Graz
- Becker Jürgen Christian
- Co-Autor*innen der Med Uni Graz
- Schrama David
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- Abstract:
- Immunity to tumors relies on recirculating antigen-specific T cells. Whilst induction of antigen-specific T cells by immunotherapy has been convincingly proven, direct evidence for recirculation of such cells is still lacking. Here, employing a recently established in situ immunotherapy model for murine melanoma we directly demonstrate the redistribution of clonally expanded T cells. In this model IL-2 is targeted to the tumor microenvironment by means of specific antibody-IL-2 fusion proteins resulting in the expansion of T cells. The therapeutic effect of the fusion protein is not restricted to tumors expressing the targeted antigen, but extends to antigen negative variants of the tumor if present in the same animal. Analysis of the T cell infiltrate by quantitative reverse transcription-PCR revealed the presence of highly expressed TCR BV regions in both tumor variants. TCR clonotype mapping revealed that the high expressions of these regions were caused by clonal expansions and, notably, that these specific clonotypic TCR transcripts were identical in both tumors. Thus, T cell clones activated locally by targeted IL-2 therapy recirculate and mediate eradication of distant tumor sites not subjected to in situ cytokine therapy.
- Find related publications in this database (using NLM MeSH Indexing)
- Amino Acid Sequence -
- Animals -
- Antibodies - therapeutic use
- Base Sequence -
- Humans -
- Interleukin-2 - therapeutic use
- Melanoma, Experimental - immunology Melanoma, Experimental - therapy
- Mice -
- Mice, Inbred C57BL -
- Molecular Sequence Data -
- Receptors, Antigen, T-Cell - genetics
- Recombinant Fusion Proteins - therapeutic use
- Reverse Transcriptase Polymerase Chain Reaction -
- T-Lymphocytes - immunology
- Tumor Cells, Cultured -
- Find related publications in this database (Keywords)
- T lymphocyte
- clonal expansion
- T cell receptor
- recirculation
- recruitment
- cytokine