کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5675035 1594209 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
PA-X protein contributes to virulence of triple-reassortant H1N2 influenza virus by suppressing early immune responses in swine
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی ویروس شناسی
پیش نمایش صفحه اول مقاله
PA-X protein contributes to virulence of triple-reassortant H1N2 influenza virus by suppressing early immune responses in swine
چکیده انگلیسی
Previous studies have identified a functional role of PA-X for influenza viruses in mice and avian species; however, its role in swine remains unknown. Toward this, we constructed PA-X deficient virus (Sw-FS) in the background of a Triple-reassortment (TR) H1N2 swine influenza virus (SIV) to assess the impact of PA-X in viral virulence in pigs. Expression of PA-X in TR H1N2 SIV enhanced viral replication and host protein synthesis shutoff, and inhibited the mRNA levels of type I IFNs and proinflammatory cytokines in porcine cells. A delay of proinflammatory responses was observed in lungs of pigs infected by wild type SIV (Sw-WT) compared to Sw-FS. Furthermore, Sw-WT virus replicated and transmitted more efficiently than Sw-FS in pigs. These results highlight the importance of PA-X in the moderation of virulence and immune responses of TR SIV in swine, which indicated that PA-X is a pro-virulence factor in TR SIV in pigs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Virology - Volume 508, August 2017, Pages 45-53
نویسندگان
, , , , , , , , , , , , , , ,