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neutrophils with effector functions almost indistinguishable from blood neutrophils, confirmed by a high similarity in transcription and protein abundance patterns. While exhibiting microbial killing capacity and antibody-dependent cellular cytotoxicity, these cells were deficient in myeloid-derived suppressor cell activity. This deficiency in immunosuppressive activity correlated with a distinct granular composition in comparison to blood neutrophils, instead of immunosuppressive characteristics that are currently held to define neutrophil-MDSC phenotype. Taken together, our cultured neutrophils closely resemble blood neutrophils, offering a repository for fundamental research and a step toward an effective transfusion product with limited immunosuppressive activity as a functional property.
Webbers et al. (Thu,) studied this question.