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Erschienen in: Cancer Immunology, Immunotherapy 2/2012

01.02.2012 | Focussed Research Review

Disarming suppressor cells to improve immunotherapy

verfasst von: Theresa L. Whiteside

Erschienen in: Cancer Immunology, Immunotherapy | Ausgabe 2/2012

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Abstract

Human tumors can use many different mechanisms to induce dysfunction in the host immune system. Accumulations of inducible regulatory T cells (iTreg, Tr1) are commonly seen in the tumor microenvironment. These Treg express CD39 and up-regulate CD73 ectonucleotidases, hydrolyze exogenous adenosine triphosphate (ATP) to AMP and adenosine and produce prostaglandin E2 (PGE2). Most tumors also express CD39/CD73 and COX-2 and thus contribute to immune suppression. Pharmacologic inhibitors can be used to eliminate adenosine/PGE2 production by Tr1 as well as the tumor or to block binding of these factors to their receptors on Teff or to selectively block cAMP synthesis in Teff. These pharmacologic blocking strategies used alone or in combination with conventional treatments or immunotherapies could disarm Tr1, at the same time restoring antitumor functions of Teff.
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Metadaten
Titel
Disarming suppressor cells to improve immunotherapy
verfasst von
Theresa L. Whiteside
Publikationsdatum
01.02.2012
Verlag
Springer-Verlag
Erschienen in
Cancer Immunology, Immunotherapy / Ausgabe 2/2012
Print ISSN: 0340-7004
Elektronische ISSN: 1432-0851
DOI
https://doi.org/10.1007/s00262-011-1171-7

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