Volume 220, Issue 1 pp. 22-34

Ecto-calreticulin in immunogenic chemotherapy

Michel Obeid

Michel Obeid

INSERM, U848, Villejuif, France

Institut Gustave Roussy, Villejuif, France

Faculté Paris Sud-Université Paris 11, Villejuif, France

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Antoine Tesniere

Antoine Tesniere

INSERM, U848, Villejuif, France

Institut Gustave Roussy, Villejuif, France

Faculté Paris Sud-Université Paris 11, Villejuif, France

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Theocharis Panaretakis

Theocharis Panaretakis

INSERM, U848, Villejuif, France

Institut Gustave Roussy, Villejuif, France

Faculté Paris Sud-Université Paris 11, Villejuif, France

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Roberta Tufi

Roberta Tufi

INSERM, U848, Villejuif, France

Institut Gustave Roussy, Villejuif, France

Faculté Paris Sud-Université Paris 11, Villejuif, France

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Nick Joza

Nick Joza

INSERM, U848, Villejuif, France

Institut Gustave Roussy, Villejuif, France

Faculté Paris Sud-Université Paris 11, Villejuif, France

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Peter Van Endert

Peter Van Endert

INSERM, U580, Paris, France

Faculté de Médecine René Descartes, Université Paris Descartes, Paris, France

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François Ghiringhelli

François Ghiringhelli

Institut Gustave Roussy, Villejuif, France

Faculté Paris Sud-Université Paris 11, Villejuif, France

INSERM, U805, Villejuif, France

Centre d'investigation clinique Biothérapie, CBT507, Institut Gustave Roussy, Villejuif, France

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Lionel Apetoh

Lionel Apetoh

Institut Gustave Roussy, Villejuif, France

Faculté Paris Sud-Université Paris 11, Villejuif, France

INSERM, U805, Villejuif, France

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Nathalie Chaput

Nathalie Chaput

Institut Gustave Roussy, Villejuif, France

Faculté Paris Sud-Université Paris 11, Villejuif, France

INSERM, U805, Villejuif, France

Centre d'investigation clinique Biothérapie, CBT507, Institut Gustave Roussy, Villejuif, France

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Caroline Flament

Caroline Flament

Institut Gustave Roussy, Villejuif, France

Faculté Paris Sud-Université Paris 11, Villejuif, France

INSERM, U805, Villejuif, France

Centre d'investigation clinique Biothérapie, CBT507, Institut Gustave Roussy, Villejuif, France

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Evelyn Ullrich

Evelyn Ullrich

Institut Gustave Roussy, Villejuif, France

Faculté Paris Sud-Université Paris 11, Villejuif, France

INSERM, U805, Villejuif, France

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Stéphane De Botton

Stéphane De Botton

Institut Gustave Roussy, Villejuif, France

Faculté Paris Sud-Université Paris 11, Villejuif, France

Service d'Hématologie Clinique, Institut Gustave Roussy, Villejuif, France

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Laurence Zitvogel

Laurence Zitvogel

Institut Gustave Roussy, Villejuif, France

Faculté Paris Sud-Université Paris 11, Villejuif, France

INSERM, U805, Villejuif, France

Centre d'investigation clinique Biothérapie, CBT507, Institut Gustave Roussy, Villejuif, France

*Guido Kroemer and Laurence Zitvogel share senior authorship.

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Guido Kroemer

Guido Kroemer

INSERM, U848, Villejuif, France

Institut Gustave Roussy, Villejuif, France

Faculté Paris Sud-Université Paris 11, Villejuif, France

*Guido Kroemer and Laurence Zitvogel share senior authorship.

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First published: 30 October 2007
Citations: 168

Dr Guido Kroemer
INSERM, U848
Institut Gustave Roussy, PR1
38 rue Camille Desmoulins
F-94805 Villejuif
France
Tel.: +33 1 42 11 60 46
Fax: +33 1 42 11 60 47
e-mail: [email protected]

Abstract

Summary: The conventional treatment of cancer relies upon radiotherapy and chemotherapy. Such treatments supposedly mediate their effects via the direct elimination of tumor cells. Nonetheless, there are circumstances in which conventional anti-cancer therapy can induce a modality of cellular demise that elicits innate and cognate immune responses, which in turn mediate part of the anti-tumor effect. Although different chemotherapeutic agents may kill tumor cells through an apparently homogeneous apoptotic pathway, they differ in their capacity to stimulate immunogenic cell death. We discovered that the pre-apoptotic translocation of intracellular calreticulin (endo-CRT) to the plasma membrane surface (ecto-CRT) is critical for the recognition and engulfment of dying tumor cells by dendritic cells. Thus, anthracyclines and γ-irradiation that induce ecto-CRT cause immunogenic cell death, while other pro-apoptotic agents (such as mitomycin C and etoposide) induce neither ecto-CRT nor immunogenic cell death. Depletion of CRT abolishes the immunogenicity of cell death elicited by anthracyclines, while exogenous supply of CRT or enforcement of CRT exposure by pharmacological agents that favor CRT translocation can enhance the immunogenicity of cell death. For optimal anti-tumor vaccination and immunogenic chemotherapy, the same cells have to expose ecto-CRT and to succumb to apoptosis; if these events affect different cells, no anti-tumor immune response is elicited. These results may have far reaching implications for tumor immunology because (i) ecto-CRT exposure by tumor cells allows for the prediction of therapeutic outcome and because (ii) the re-establishment of ecto-CRT may ameliorate the efficacy of chemotherapy.

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