کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2430351 1106561 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Innate immunomodulation with recombinant interferon-α enhances resistance of rainbow trout (Oncorhynchus mykiss) to infectious hematopoietic necrosis virus
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شناسی تکاملی
پیش نمایش صفحه اول مقاله
Innate immunomodulation with recombinant interferon-α enhances resistance of rainbow trout (Oncorhynchus mykiss) to infectious hematopoietic necrosis virus
چکیده انگلیسی

SummaryWe examined the in vivo immunostimulatory effects of a recombinant Atlantic salmon (Salmo salar) interferon-α2 (rSasaIFN-α2). The mature rSasaIFN-α2, expressed and purified from Escherichia coli, was administered to rainbow trout (Oncorhynchus mykiss) via the oral, immersion, or intraperitoneal (IP) injection route. Injection of rSasaIFN-α2 at 0.1 μg/g fish gave significantly greater protection than a phosphate buffered saline (PBS) injection against a lethal challenge of infectious hematopoietic necrosis virus (IHNV), with a relative percent survival of 39%. Relative percent survival (RPS) increased significantly to 92% when the fish were injected with rSasaIFN-α2 at 1 μg/g fish. Antiviral protection was evident for up to 7 days post-injection of rSasaIFN-α2. Administration of rSasaIFN-α2 by the oral or immersion route was not protective, and the fish succumbed to virus infection. The level of systemic IFN-induced expression of the Mx1 gene was significantly greater (p<0.01) in the IFN-injected group than in the PBS-injected group, and this was correlated with the fish survival rates in the challenge study. We used relative quantitative real-time polymerase chain reactions to examine the systemic expression of several other IFN-induced genes (including genes for IFN1, IFN regulatory factors 1 and 2, MHC-I, STAT1, vig-1, and GBP) and found that their expression was significantly increased 1-day post-rSasaIFN-α2 injection. Expression of the IFN-γ and interleukin-1β genes was not significantly increased. Thus, a salmonid rIFN-α can modulate the innate immune response of rainbow trout and mediate early antiviral protection against IHNV.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Developmental & Comparative Immunology - Volume 32, Issue 10, 2008, Pages 1211–1220
نویسندگان
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