Acute myeloid leukaemia triggering via CD40 induces leukocyte chemoattraction and cytotoxicity against allogenic or autologous leukemic targets.
Leukemia
; 14(1): 123-8, 2000 Jan.
Article
en En
| MEDLINE
| ID: mdl-10637487
ABSTRACT
The CD40 antigen is a member of the tumor necrosis factor receptor superfamily which interacts with its ligand and regulates the immune response via a dialogue between T-lymphocytes and antigen-presenting or tumor cells. Tumor triggering via CD40 exerts direct effects on cancer cells, which have mainly been investigated in terminally differentiated hematological malignancies such as low-grade lymphoma. We focused our attention on minimally differentiated acute myeloid leukemia (AML-M0), an aggressive hematological malignancy in which severe prognosis suggests the requirement for innovative therapeutic strategies. Here we demonstrate, for the first time to our knowledge, a CD40-triggered IL-8, RANTES and IL-12 secretion by leukemic cells. Supernatants from CD40-stimulated leukemia cells had chemoattractant effects on T-lymphocytes, natural killer cells and monocytes. Moreover, these supernatants, when complemented with low-dose IL-2, induced significant lymphokine-activated and natural killer cytotoxicity, leading to leukemia lysis both in allogenic HLA-matched and autologous settings. Stimulation of leukemia cells via CD40 could participate significantly to the anti-leukemia immune response by contributing to the development of an inflammatory response and to in situ cytotoxicity. Leukemia(2000) 14, 123-128.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Leucemia Mieloide
/
Antígenos CD40
/
Citotoxicidad Inmunológica
/
Leucocitos
Tipo de estudio:
Prognostic_studies
Límite:
Humans
Idioma:
En
Revista:
Leukemia
Asunto de la revista:
HEMATOLOGIA
/
NEOPLASIAS
Año:
2000
Tipo del documento:
Article
País de afiliación:
Francia