ArticleHaematologica2026
Early cytokine and chemokine signals shape the anti-AML activity of bispecific engager-secreting T cells.
Article in Haematologica, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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12 authors.
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Abstract
Immunotherapies, including cell therapies, are effective anti-cancer agents. However, cellular product persistence can be limiting with short functional duration of activity contributing to disease relapse. A variety of manufacturing protocols are used to generate therapeutic engineered T cells; these differ in techniques used for T-cell isolation, activation, genetic modification, and other methodology. We sought to determine how pre-selection affected the phenotype of T cells engineered to secrete a CD123xCD3 bispecific engager (ENG-T). These cells were designed to treat acute myeloid leukemia (AML). We evaluated the effect of T-cell selection on transduction efficiency, T-cell activation, short- and long-term anti-AML cytotoxicity, and gene transcription. Unselected, CD4, CD8, and CD4/CD8 pre-selected ENG-T cells have minor differences in T-cell subset components, equivalent activation, and equal cytotoxicity in short-term assays. While unselected and CD4/ CD8-selected ENG-T cells have identical CD4:CD8 composition prior to target cell exposure, serial stimulation in vitro showed CD4/CD8 pre-selection supports ENG-T-cell survival and long-term activity. Likewise, CD4 and CD4/CD8 pre-selected ENG-T cells display superior anti-tumor efficacy and prolong murine survival in AML xenografts. Unselected ENG-T cells are exposed to cytokines during early manufacture that imprint upregulation of intracellular inflammatory pathways. This early activation likely underpins long-term observed functional differences. Pre-selection of T cells from banked patient biospecimens decreased blast contamination, exposure to inflammatory cytokines, and may improve T-cell expansion during manufacture. Pre-selection of T-cell products should continue to be performed to enhance the quality of clinical cellular therapeutics.
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