کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8472033 1550288 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Role of different receptors and actin filaments on Salmonella Typhimurium invasion in chicken macrophages
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیولوژی سلول
پیش نمایش صفحه اول مقاله
Role of different receptors and actin filaments on Salmonella Typhimurium invasion in chicken macrophages
چکیده انگلیسی
Bacterial attachment to host cell is the first event for pathogen entry. The attachment is mediated through membrane expressed adhesins present on the organism and receptors on the cell surface of host. The objective of this study was to investigate the significance of Fc receptors (FcRs), actin filament polymerization, mannose receptors (MRs), carbohydrate moieties like N-linked glycans and sialic acid on chicken macrophages for invasion of S. Typhimurium. Opsonisation of S. Typhimurium resulted in three folds more invasion in chicken monocyte derived macrophages. Cytochalasin D, an inhibitor of actin filament polymerization prevented uptake of S. Typhimurium. Pre-incubation of macrophages with cytochalasin D, showed severe decrease (28 folds) in S. Typhimurium invasion. Next we attempted to analyse the role of carbohydrate receptors of macrophages in S. Typhimurium invasion. Treatment of macrophages with methyl α-d-mannopyranoside, PNGase F and neuraminidase, showed 2.5, 5 and 2.5 folds decrease in invasion respectively. Our data suggest that deglycosylation of N-linked glycans including sialic acid by PNGase F is more effective in inhibition of S. Typhimurium invasion than neuraminidase which removes only sialic acid. These findings suggested FcRs, actin filament polymerization, MRs, N-linked glycans and sialic acid may act as gateway for entry of S. Typhimurium.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Immunobiology - Volume 223, Issues 6–7, June–July 2018, Pages 501-507
نویسندگان
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