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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-2963

Tyner, J W; Uchida, O; Kajiwara, N; Kim, E Y; Patel, A C; O'Sullivan, M P; Walter, M J; Schwendener, R; Cook, D N; Danoff, T M; Holtzman, M J (2005). CCL5-CCR5 interaction provides antiapoptotic signals for macrophage survival during viral infection. Nature Medicine, 11(11):1180-1187.

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Host defense against viruses probably depends on targeted death of infected host cells and then clearance of cellular corpses by macrophages. For this process to be effective, the macrophage must presumably avoid its own virus-induced death. Here we identify one such mechanism. We show that mice lacking the chemokine Ccl5 are immune compromised to the point of delayed viral clearance, excessive airway inflammation and respiratory death after mouse parainfluenza or human influenza virus infection. Virus-inducible levels of Ccl5 are required to prevent apoptosis of virus-infected mouse macrophages in vivo and mouse and human macrophages ex vivo. The protective effect of Ccl5 requires activation of the Ccr5 chemokine receptor and consequent bilateral activation of G(alphai)-PI3K-AKT and G(alphai)-MEK-ERK signaling pathways. The antiapoptotic action of chemokine signaling may therefore allow scavengers to finally stop the host cell-to-cell infectious process.


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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Molecular Cancer Research
07 Faculty of Science > Institute of Molecular Cancer Research
Dewey Decimal Classification:570 Life sciences; biology
Deposited On:26 Mar 2009 15:42
Last Modified:19 Mar 2015 13:59
Publisher:Nature Publishing Group
Publisher DOI:10.1038/nm1303
PubMed ID:16208318

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