Hulskof schreef op 13 december 2021 15:10:
Retaining biological activity and specificity after cryopreservation is a prerequisite to enable the development of pre-complexed off-the-shelf CAR-like NK cell products. Our results confirmed that the efficacy of tumor cell lysis by AFM13-pre-complexed NK cells, was virtually unaffected after one cycle of cryopreservation at -80°C.
Dat wisten we eigenlijk al.
The results revealed that target cell lysis via NK cell-mediated antibody-dependent cell-mediated cytotoxicity (ADCC), even at low CD123 expression, was more pronounced compared to conventional anti-CD123 antibodies. In addition, AFM28 showed a 100-fold more potent NK cell activation in an ex vivo analysis, compared to Fc-enhanced IgG1 antibodies. When compared with a CD123-targeting T cell-engaging bispecific antibody, AFM28 activity was associated with substantially lower levels of inflammatory cytokine release suggesting low risk of cytokine release syndrome. In support of these findings, administration of AFM28 to cynomolgus monkeys induced the effective depletion of CD123+ target cells and was well tolerated.
Dit is een leuk begin.