Volume 120, Issue 2 pp. 243-250

Idiotype-pulsed dendritic cells are able to induce antitumoral cytotoxic CD8 cells in chronic lymphocytic leukaemia

Françoise Vuillier

Françoise Vuillier

Unité d'Immuno-Hématologie et d'Immunopathologie, Institut Pasteur,

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Karim Maloum

Karim Maloum

Département d'Hématologie, Hôpital Pitié-Salpêtrière, Paris, France, and

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Elaine K. Thomas

Elaine K. Thomas

Immunex Corporation, Seattle, WA, USA

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Christian Magnac

Christian Magnac

Unité d'Immuno-Hématologie et d'Immunopathologie, Institut Pasteur,

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Gérard Dumas

Gérard Dumas

Unité d'Immuno-Hématologie et d'Immunopathologie, Institut Pasteur,

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Béatrice Payelle-Brogard

Béatrice Payelle-Brogard

Unité d'Immuno-Hématologie et d'Immunopathologie, Institut Pasteur,

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Pablo Oppezzo

Pablo Oppezzo

Unité d'Immuno-Hématologie et d'Immunopathologie, Institut Pasteur,

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Guillaume Dighiero

Guillaume Dighiero

Unité d'Immuno-Hématologie et d'Immunopathologie, Institut Pasteur,

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Daniel Scott-Algara

Daniel Scott-Algara

Unité d'Immuno-Hématologie et d'Immunopathologie, Institut Pasteur,

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First published: 24 January 2003
Citations: 15
Françoise Vuillier, Unité d'Immuno-Hématologie et d'Immunopathologie, Institut Pasteur, 28 rue du Dr Roux, F-75724 Paris Cedex 15, France. E-mail: [email protected]

Abstract

Summary. Idiotypic structures of immunoglobulins from malignant B cells constitute tumour-specific antigens, though the function of immunoglobulin-specific CD8+ T cells in disease control and rejection remains unclear. We have studied five cases of B chronic lymphocytic leukaemia patients affected with indolent (three patients) or aggressive (two patients) disease. We showed that CD8+ T cells with major histocompatibility complex class I-restricted cytotoxicity against autologous tumour B cells could be generated following repeated stimulations with idiotype-pulsed dendritic cells in vitro. CD8+ T-cell lines were able to upregulate CD69 expression and to release interferon (IFN)-γ upon contact with the autologous B cells, though cytolytic activity was only substantiated for patients with indolent disease. The failure of cytolytic activity in patients with aggressive disease may be explained by a skewed maturation of memory CD8 cells.

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