کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1165562 1491106 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
2-Aminopurine hairpin probes for the detection of ultraviolet-induced DNA damage
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
2-Aminopurine hairpin probes for the detection of ultraviolet-induced DNA damage
چکیده انگلیسی

Nucleic acid exposure to radiation and chemical insults leads to damage and disease. Thus, detection and understanding DNA damage is important for elucidating molecular mechanisms of disease. However, current methods of DNA damage detection are either time-consuming, destroy the sample, or are too specific to be used for generic detection of damage. In this paper, we develop a fluorescence sensor of 2-aminopurine (2AP), a fluorescent analogue of adenine, incorporated in the loop of a hairpin probe for the quantification of ultraviolet (UV) C-induced nucleic acid damage. Our results show that the selectivity of the 2AP hairpin probe to UV-induced nucleic acid damage is comparable to molecular beacon (MB) probes of DNA damage. The calibration curve for the 2AP hairpin probe shows good linearity (R2 = 0.98) with a limit of detection of 17.2 nM. This probe is a simple, fast and economic fluorescence sensor for the quantification of UV-induced damage in DNA.

Figure optionsDownload as PowerPoint slideHighlights
► Molecular beacon with 2AP bases detects DNA damage in a simple mix-and-read assay.
► Molecular beacons with 2AP bases detect damage at a 17.2 nM limit of detection.
► The 2AP molecular beacon is linear over a 0–3.5 μM concentration range for damage.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 726, 13 May 2012, Pages 44–49
نویسندگان
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