Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 J+Virol 2011 ; 85 (19): 10109-16 Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Type 1 Responses of Human V?9V?2 T Cells to Influenza A Viruses? #MMPMID21752902
Qin G; Liu Y; Zheng J; Ng IHY; Xiang Z; Lam KT; Mao H; Li H; Peiris JSM; Lau YL; Tu W
J Virol 2011[Oct]; 85 (19): 10109-16 PMID21752902show ga
?? T cells are essential constituents of antimicrobial and antitumor defenses. We have recently reported that phosphoantigen isopentenyl pyrophosphate (IPP)-expanded human V?9V?2 T cells participated in anti-influenza virus immunity by efficiently killing both human and avian influenza virus-infected monocyte-derived macrophages (MDMs) in vitro. However, little is known about the noncytolytic responses and trafficking program of ?? T cells to influenza virus. In this study, we found that V?9V?2 T cells expressed both type 1 cytokines and chemokine receptors during influenza virus infection, and IPP-expanded cells had a higher capacity to produce gamma interferon (IFN-?). Besides their potent cytolytic activity against pandemic H1N1 virus-infected cells, IPP-activated ?? T cells also had noncytolytic inhibitory effects on seasonal and pandemic H1N1 viruses via IFN-? but had no such effects on avian H5N1 or H9N2 virus. Avian H5N1 and H9N2 viruses induced significantly higher CCL3, CCL4, and CCL5 production in V?9V?2 T cells than human seasonal H1N1 virus. CCR5 mediated the migration of V?9V?2 T cells toward influenza virus-infected cells. Our findings suggest a novel therapeutic strategy of using phosphoantigens to boost the antiviral activities of human V?9V?2 T cells against influenza virus infection.