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  • Kerbauy, Lucila N; Marin, Nancy D; Kaplan, Mecit; Banerjee, Pinaki P; Berrien-Elliott, Melissa M; Becker-Hapak, Michelle; Basar, Rafet; Foster, Mark; Garcia Melo, Luciana; Neal, Carly C; McClain, Ethan; Daher, May; Nunez Cortes, Ana Karen; Desai, Sweta; Inng Lim, Francesca Wei; Mendt, Mayela Carolina; Schappe, Timothy; Li, Li; Shaim, Hila; Shanley, Mayra; Ensley, Emily L; Uprety, Nadima; Wong, Pamela; Liu, Enli; Ang, Sonny O; Cai, Rong; Nandivada, Vandana; Mohanty, Vakul; Miao, Qi; Shen, Yifei; Baran, Natalia; Fowlkes, Natalie W; Chen, Ken; Muniz-Feliciano, Luis; Champlin, Richard E; Nieto, Yago L; Koch, Joachim; Treder, Martin; Fischer, Wolfgang; Okamoto, Oswaldo Keith; Shpall, Elizabeth J; Fehniger, Todd A; Rezvani, Katayoun

    Clinical cancer research, 07/2021, Letnik: 27, Številka: 13
    Journal Article

    Natural killer (NK)-cell recognition and function against NK-resistant cancers remain substantial barriers to the broad application of NK-cell immunotherapy. Potential solutions include bispecific engagers that target NK-cell activity via an NK-activating receptor when simultaneously targeting a tumor-specific antigen, as well as enhancing functionality using IL12/15/18 cytokine pre-activation. We assessed single-cell NK-cell responses stimulated by the tetravalent bispecific antibody AFM13 that binds CD30 on leukemia/lymphoma targets and CD16A on various types of NK cells using mass cytometry and cytotoxicity assays. The combination of AFM13 and IL12/15/18 pre-activation of blood and cord blood-derived NK cells was investigated and . We found heterogeneity within AFM13-directed conventional blood NK cell (cNK) responses, as well as consistent AFM13-directed polyfunctional activation of mature NK cells across donors. NK-cell source also impacted the AFM13 response, with cNK cells from healthy donors exhibiting superior responses to those from patients with Hodgkin lymphoma. IL12/15/18-induced memory-like NK cells from peripheral blood exhibited enhanced killing of CD30 lymphoma targets directed by AFM13, compared with cNK cells. Cord-blood NK cells preactivated with IL12/15/18 and expanded with K562-based feeders also exhibited enhanced killing with AFM13 stimulation via upregulation of signaling pathways related to NK-cell effector function. AFM13-NK complex cells exhibited enhanced responses to CD30 lymphomas and . We identify AFM13 as a promising combination with cytokine-activated adult blood or cord-blood NK cells to treat CD30 hematologic malignancies, warranting clinical trials with these novel combinations.