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Andreas Hombach

Researcher at University of Cologne

Publications -  95
Citations -  4757

Andreas Hombach is an academic researcher from University of Cologne. The author has contributed to research in topics: Antigen & T cell. The author has an hindex of 39, co-authored 93 publications receiving 4278 citations.

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Tumor-specific T cell activation by recombinant immunoreceptors: CD3 zeta signaling and CD28 costimulation are simultaneously required for efficient IL-2 secretion and can be integrated into one combined CD28/CD3 zeta signaling receptor molecule.

TL;DR: T cells grafted with the combined CD28/CD3ζ signaling receptor secreted high amounts of IL-2 upon Ag binding without exogenous B7/CD28 costimulation, demonstrating that both MHC-independent cellular activation and CD28costimulation for complete T cell activation can be delivered by one recombinant receptor molecule.
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T Cell Activation by Antibody-Like Immunoreceptors: Increase in Affinity of the Single-Chain Fragment Domain above Threshold Does Not Increase T Cell Activation against Antigen-Positive Target Cells but Decreases Selectivity

TL;DR: Rec recombinant immunoreceptors of higher affinity do not necessarily induce a more potent activation of T cells than low affinity immunoreCEPTors, but the higher affinity immunoresceptors exhibit less discrimination between target cells with high or low Ag expression levels.
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Adoptive immunotherapy with genetically engineered T cells: modification of the IgG1 Fc 'spacer' domain in the extracellular moiety of chimeric antigen receptors avoids 'off-target' activation and unintended initiation of an innate immune response.

TL;DR: It is revealed that CARs with Fc spacer domain bind to IgG Fc gamma receptors (FcγRs), thereby unintentionally activating innate immune cells, including monocytes and natural killer cells, which consequently secrete high amounts of pro-inflammatory cytokines.
Journal Article

Chronic inflammatory bowel disease and cancer

TL;DR: The histologic evidence of dysplasia was shown to be a strong indicator of underlying carcinoma or developing malignant transformation, and the role of surveillance programs for the early detection of ulcerative colitis associated colorectal cancer at a curable stage is still under debate.