Lenalidomide enhances CD23.CAR T cell therapy in chronic lymphocytic leukemia.
Leuk Lymphoma
; 63(7): 1566-1579, 2022 07.
Article
en En
| MEDLINE
| ID: mdl-35259043
ABSTRACT
Chimeric antigen receptors (CAR)-modified T cells are an emerging therapeutic tool for chronic lymphocytic leukemia (CLL). However, in patients with CLL, well-known T-cell defects and the inhibitory properties of the tumor microenvironment (TME) hinder the efficacy of CAR T cells. We explored a novel approach combining CARs with lenalidomide, an immunomodulatory drug that tempers the immunosuppressive activity of the CLL TME. T cells from patients with CLL were engineered to express a CAR specific for CD23, a promising target antigen. Lenalidomide maintained the in vitro effector functions of CD23.CAR+ T cells effector functions in terms of antigen-specific cytotoxicity, cytokine release and proliferation. Overall, lenalidomide preserved functional CAR T-CLL cell immune synapses. In a Rag2-/-γc-/--based xenograft model of CLL, we demonstrated that, when combined with low-dose lenalidomide, CD23.CAR+ T cells efficiently migrated to leukemic sites and delayed disease progression when compared to CD23.CAR+ T cells given with rhIL-2. These observations underline the therapeutic potential of this novel CAR-based combination strategy in CLL.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Leucemia Linfocítica Crónica de Células B
/
Inmunoterapia Adoptiva
Límite:
Humans
Idioma:
En
Revista:
Leuk Lymphoma
Asunto de la revista:
HEMATOLOGIA
/
NEOPLASIAS
Año:
2022
Tipo del documento:
Article
País de afiliación:
Italia