کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1804929 1024663 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetic viruses via nano-capsid templates
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Magnetic viruses via nano-capsid templates
چکیده انگلیسی
Biological templating of inorganic nanoparticles provides promising opportunities to address the grand challenge in nanoscience of realizing the full potential of self-assembled materials. We implement such biotemplating to create magnetic nanoparticles by utilizing native protein capsid shells derived in high yield from the T7 bacteriophage virus. The magnetic nanoparticles are grown via bio-mineralization reactions inside of hollowed-out capsids that retain their original chemical recognition properties. The resultant “magnetic viruses” are uniform in geometry, physical properties, and biochemical functionality. We first coax the DNA out of the T7 virus by means of an alkaline treatment, and then grow magnetic cobalt particles inside the remaining hollow capsid shell. Related methods of fabricating bio-functional magnetic nanoparticles have utilized either recombinant, single-protein-type capsids, or involve coating previously synthesized inorganic particles with bio-ligands. Given the richness of the protein types that form the native T7 capsid, our magnetic viruses can be tailored to tune the bio-functionality and/or bio-tagging of a sample. As an example, we consider a nano-biomagnetic sensing scheme that would utilize the T7 capsid to control the magnetic nanoparticle size distribution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 302, Issue 1, July 2006, Pages 47-51
نویسندگان
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