کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2485437 | 1114355 | 2013 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Application of Second-Derivative Fluorescence Spectroscopy to Monitor Subtle Changes in a Monoclonal Antibody Structure
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کلمات کلیدی
protein aggregation - تجمع پروتئینTryptophan - تریپتوفانProtein structure - ساختار پروتئینExcipients - عضلاتFluorescence spectroscopy - فوتولومینسانس یا فلوئورسانس یا فسفرسانسSecond derivative - مشتق دومMonoclonal antibodies - پادتنهای تَکتیرهProtein unfolding - پروتئین در حال ظهور استProteins - پروتئین هاPolyols - پلیول ها
موضوعات مرتبط
علوم پزشکی و سلامت
داروسازی، سم شناسی و علوم دارویی
اکتشاف دارویی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this study, the tertiary structure of a monoclonal antibody was analyzed under thermal and chemical stresses using secondâderivative fluorescence spectroscopy. The effect of polyols, sucrose, and ethylene glycol on the tertiary structure of monoclonal antibodyâU (mAbâU) (pH 7.0) was studied under thermal stress (25°C-75°C). The tertiary structure of mAbâU was also analyzed upon chemical denaturation using urea (2.0-8.0 M). The second derivative of mAbâU showed three bands corresponding to the three spectral classes of tryptophan, class I (330 nm), class II (340 nm), and class III (350 nm). Class II was higher in intensity in the presence of polyols compared with the solution without any polyol. Thermally denatured structure of mAbâU in sucrose and ethylene glycol was distinctly different than that in buffer. Addition of urea resulted in a decrease in intensity of class I and II, and an increase in intensity of class III implying unfolding. This study showed that secondâderivative fluorescence spectroscopy is an effective tool to monitor subtle alterations in the tertiary structure of proteins. The unfolding of a protein is reflected as an increase in the intensity of the polar class III accompanied with a decrease in the intensity of class I.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Pharmaceutical Sciences - Volume 102, Issue 1, January 2013, Pages 52-61
Journal: Journal of Pharmaceutical Sciences - Volume 102, Issue 1, January 2013, Pages 52-61
نویسندگان
Shermeen A. Abbas, Greta Gaspar, Vikas K. Sharma, Thomas W. Patapoff, Devendra S. Kalonia,