GENERATION OF ANTITUMOR-ACTIVITY BY OKT3-STIMULATION IN MULTIPLE-MYELOMA - IN-VITRO INHIBITION OF AUTOLOGOUS HEMATOPOIESIS

被引：6

作者：

ATTISANO, C ^{[1
]}

BIANCHI, A ^{[1
]}

MONTACCHINI, L ^{[1
]}

CARLESSO, N ^{[1
]}

PEOLA, S ^{[1
]}

BRUNO, B ^{[1
]}

ROUX, V ^{[1
]}

FERRERO, D ^{[1
]}

GALLO, E ^{[1
]}

BOCCADORO, M ^{[1
]}

PILERI, A ^{[1
]}

MASSAIA, M ^{[1
]}

机构：

[1] UNIV TURIN,OSPED MAGGIORE S GIOVANNI BATTISTA,DIV EMATOL,I-10126 TURIN,ITALY

来源：

BRITISH JOURNAL OF HAEMATOLOGY | 1994年 / 87卷 / 03期

关键词：

MULTIPLE MYELOMA; OKT3; T CELLS; CFU-GM; AUTOLOGOUS BONE MARROW TRANSPLANTATION;

D O I：

10.1111/j.1365-2141.1994.tb08303.x

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

T cells in multiple myeloma (MM) patients are highly susceptible to activation with the anti-CD3 monoclonal antibody (mAb) OKT3. When short-term OKT3 stimulation is carried out on bone marrow mononuclear cells (BMMC), large numbers of CD3(+)CD25(+)HLA-DR(+) cells are rapidly generated and autologous malignant plasma cells are killed. OKT3 may thus be exploited in autologous bone marrow transplantation (ABMT) to purge residual plasma cells and simultaneously activate T eels to induce graft-versus-leukaemia-like (GVL-like) activity upon reinfusion. However, the possible impact of ex-vivo short-term OKT3 stimulation on haematological recovery is unknown. The aim of this work was to investigate the effect of OKT3 stimulation in vitro on autologous haemopoietic progenitor cells (HPC) of MM patients. Colony formation by granulocyte-macrophage progenitor cells (granulocyte-macrophage colony-forming units, CFU-GM) was highly suppressed, although supernatants of OKT3-activated T cells contained up to 2500 pg/ml of granulocyte-macrophage colony-stimulating factor (GM-CSF). T cell depletion completely prevented this suppression. Neutralizing antibodies against TNF-alpha, TNF-beta and IFN-gamma (which are also produced by OKT3-activated MM T cells) did not prevent it, and Transwell cultures showed that cell-to-cell contact was the main mechanism involved. OKT3-activated T cells also suppressed erythroid burst-forming units (BFU-E) and CFU-GM generation from HPC responsible for long-term maintenance of in vitro myelopoiesis. When tested on normal allogeneic BM, MM supernatants of OKT3-stimulated BMMC partially suppressed the generation of day 7 CFU-GM, but had no effect on day 14 CFU-GM. These data indicate that short-term stimulation of BMMC with OKT3 can be used to generate anti-tumour effector T cells for autologous adoptive immunotherapy. It is not a feasable approach for ex-vivo purging and activation procedures in ABMT because of its potent inhibition of autologous haemopoiesis.

引用

页码：494 / 502

页数：9

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