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Cell Rep Med ; 3(10): 100783, 2022 10 18.
Artículo en Inglés | MEDLINE | ID: mdl-36260981

RESUMEN

Harnessing innate immunity is emerging as a promising therapeutic approach in cancer. We report here the design of tetraspecific molecules engaging natural killer (NK) cell-activating receptors NKp46 and CD16a, the ß-chain of the interleukin-2 receptor (IL-2R), and a tumor-associated antigen (TAA). In vitro, these tetraspecific antibody-based natural killer cell engager therapeutics (ANKETs) induce a preferential activation and proliferation of NK cells, and the binding to the targeted TAA triggers NK cell cytotoxicity and cytokine and chemokine production. In vivo, tetraspecific ANKETs induce NK cell proliferation and their accumulation at the tumor bed, as well as the control of local and disseminated tumors. Treatment of non-human primates with CD20-directed tetraspecific ANKET leads to CD20+ circulating B cell depletion, with minimal systemic cytokine release and no sign of toxicity. Tetraspecific ANKETs, thus, constitute a technological platform for harnessing NK cells as next-generation cancer immunotherapies.


Asunto(s)
Interleucina-2 , Neoplasias , Animales , Interleucina-2/genética , Células Asesinas Naturales , Receptores de Interleucina-2/metabolismo , Citocinas , Neoplasias/genética , Quimiocinas/metabolismo
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