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Schmidts, Andrea; Ormhøj, Maria; Choi, Bryan D.; Taylor, Allison O.; Bouffard, Amanda A.; Scarfò, Irene; Larson, Rebecca C.; Frigault, Matthew J.; Gallagher, Kathleen; Castano, Ana P.; Riley, Lauren S.; Cabral, Maria L.; Boroughs, Angela C.; Velasco Cárdenas, Rubí M.-H.; Schamel, Wolfgang; Zhou, Jing; Mackay, Sean; Tai, Yu-Tzu; Anderson, Kenneth C.; Maus, Marcela V.
Blood advances, 11/2019, Letnik: 3, Številka: 21Journal Article
Chimeric antigen receptor (CAR) T cells (CARTs) have shown tremendous potential for the treatment of certain B-cell malignancies, including patients with relapsed/refractory multiple myeloma (MM). Targeting the B-cell maturation antigen (BCMA) has produced the most promising results for CART therapy of MM to date, but not all remissions are sustained. Emergence of BCMA escape variants has been reported under the selective pressure of monospecific anti-BCMA CART treatment. Thus, there is a clinical need for continuous improvement of CART therapies for MM. Here, we show that a novel trimeric APRIL (a proliferation-inducing ligand)–based CAR efficiently targets both BCMA+ and BCMA− MM. Modeled after the natural ligand-receptor pair, APRIL-based CARs allow for bispecific targeting of the MM-associated antigens BCMA and transmembrane activator and CAML interactor (TACI). However, natural ligands as CAR antigen-binding domains may require further engineering to promote optimal binding and multimerization to adequately trigger T-cell activation. We found that using a trimeric rather than a monomeric APRIL format as the antigen-binding domain enhanced binding to BCMA and TACI and CART activity against MM in vitro and in vivo. Dual-specific, trimeric APRIL-based CAR are a promising therapeutic approach for MM with potential for preventing and treating BCMA escape. •A trimeric extracellular moiety of APRIL has enhanced binding to BCMA and TACI compared with monomeric APRIL when incorporated into a CAR.•T cells transduced with a trimeric APRIL-based CAR are a promising approach for the treatment of MM. Display omitted
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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