کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10941124 | 1095601 | 2012 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Naturally occurring V region connected antibodies inhibit anti-dsDNA antibody reactivity with dsDNA
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
binding bufferNHSGBFORGidiotypeCRIautoantibodiesCDRdsDNACNBrABSPBSRheumatoid arthritis - آرتریتروماتوئیدantibodies - آنتی بادی هاNatural antibodies - آنتیبادیهای طبیعیdouble-stranded deoxyribonucleic acid - اسید دز اکسید ریبونوکلئیک دو رشته ایimmunoglobulins - ایمونوگلوبولین هاcyanogen bromide - برومید سایانوژنELISA - تست الیزاEnzyme-linked immunosorbent assay - تست الیزاnormal human serum - سرم طبیعی انسانrheumatoid factor - عامل روماتوئیدPhosphate buffered saline - فسفات بافر شورSystemic lupus erythematosus - لوپوس اریتماتوی سیستمیکSLE - لوپوس منتشر یا لوپوس اریتماتوس سیستمیکcomplementary determining regions - مناطق تعیین کننده مکملmarginal zone - منطقه حاشیه ایAntigen - پادگِن یا آنتیژنPolysaccharides - پلیساکاریدهاFramework - چارچوب
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
بیولوژی سلول
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The production of autoantibodies against a vast array of self antigens, most notably double stranded (ds) DNA, characterized systemic lupus erythematosus (SLE). The purpose of this work is to study specific Ig fractions isolated from normal human serum (NHS) and their effect on the binding of anti-double-stranded deoxyribonucleic acid (dsDNA) antibodies (Abs) to dsDNA. A fraction named immunoglobulin G (IgG)-reactive IgG was purified from total NHS IgG by absorption onto (CNBr)-activated Sepharose 4B linked to intact IgG molecules (IgG-Sepharose column). IgG-reactive IgG was co-incubated with systemic lupus erythematosus (SLE) patient's serum and binding of the anti-dsDNA Abs to dsDNA was measured by enzyme-linked immunosorbent assay (ELISA). Co-incubation of SLE patient's serum with IgG-reactive IgG resulted in a dose-dependent reduction in binding of anti-dsDNA Abs to dsDNA. A reduction greater than 70% was observed at a concentration of 300 μg of IgG-reactive IgG per mL of a 400-fold diluted SLE patient's serum whereas total NHS IgG, at the same concentration, resulted in a 10% reduction in binding. The purification process used to isolate IgG-reactive IgG was based on interactions between intact Ig rather than on interactions between F(ab')2 portions. IgG2 is the predominant immunoglobulin (Ig) subclass in IgG-reactive IgG. Thus, IgG2 might have an important role in the connectivity characteristics of NHS IgG. The capacity of IgG-reactive IgG to inhibit anti-DNA Ab binding to dsDNA may have potential application in the treatment of SLE. This targeted biological approach may provide an alternative strategy to immunosuppressants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Immunobiology - Volume 217, Issue 1, January 2012, Pages 111-117
Journal: Immunobiology - Volume 217, Issue 1, January 2012, Pages 111-117
نویسندگان
Tatjana Srdic-Rajic, Vladimir Jurisic, Sladjana Andrejevic, Branka Bonaci-Nikolic, Timothy Bowker, Daniela Concas, Radmila Metlas,