کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
613615 880725 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
pH-responsive, self-assembling nanoparticle from a fullerene-tagged poly(l-glutamic acid) and its superoxide dismutase mimetic property
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
pH-responsive, self-assembling nanoparticle from a fullerene-tagged poly(l-glutamic acid) and its superoxide dismutase mimetic property
چکیده انگلیسی

In this study, we describe the fabrication of novel fullerene-containing peptide-nanoparticles through self-assembly. A water-soluble, poly(l-glutamic acid)-attached fullerene was newly synthesized and the conformation and self-assembling property in water were examined by using circular dichroism, FTIR, UV, atomic force microscopy, and dynamic light scattering measurements. In the lower pH region (<6.8), the fullerene peptide self-assembles into nanoparticles that are ca. 100–200 nm in diameter. These nanoparticles are rich in α-helices, and stacking interaction of fullerene moieties contributes to the stability of the high-order structure. In addition, these particle sizes can be easily controlled by changing pH that results in causing the conformational transition of PLGA segment. Finally, the fullerene-containing nanoparticle is confirmed to be capable of removing the biologically important superoxide radical in comparison with the superoxide dismutase.

A pH-responsive, self-organized nanoparticle was successfully constructed by using a conformational transition of the polypeptide segment and tagging fullerene at one chain end. The resultant nanoparticle was confirmed to be capable of removing the biologically important superoxide radical.Figure optionsDownload high-quality image (94 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 298, Issue 1, 1 June 2006, Pages 118–123
نویسندگان
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