کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1242248 1495796 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chemiluminescence-imaging detection of DNA on a solid-phase membrane by using a peroxidase-labeled macromolecular probe
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Chemiluminescence-imaging detection of DNA on a solid-phase membrane by using a peroxidase-labeled macromolecular probe
چکیده انگلیسی


• Horseradish peroxidase (HRP) and biotin labeled dextran probe was synthesized.
• We developed a chemiluminescence method for DNA determination by using the probe.
• We applied it to the determination of human telomere DNA of buccal mucous cells.
• Our method was more sensitive than a conventional one using HRP–avidin probe.

We have developed a novel method for sensitive chemiluminescence (CL)-imaging detection of DNA by using a macromolecular probe synthesized by attaching multiple molecules of horseradish peroxidase (HRP) and biotin in dextran backbone. The probe formed a macromolecular assembly by binding to streptavidin which specifically recognized biotinylated complementary DNA, which was hybridized to a target DNA on a solid-phase membrane. This methodology was applied to CL-imaging detection of a synthetic telomere DNA (TTAGGG)10 and human telomere DNA by using the CL probe comprising of dextranT2000 (MW=ca. 2000 kDa) bonded to approximately 42 molecules of HRP and 210 molecules of biotin. The human telomere DNA in a small number of buccal mucous cells (ca. 70 cell numbers) of cheek tissue was quantitatively determined by the proposed CL detection method that afforded approximately 10 times higher sensitivity than that of the conventional CL method using commercially available HRP–avidin probe.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 139, 1 July 2015, Pages 138–142
نویسندگان
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