title: A novel adenosine-based molecular beacon probe for room temperature nucleic acid rapid detection in cotton thread device.
abstract: We used cotton thread as substrate to develop a novel room temperature DNA detection device for low-cost, sensitive and rapid detection of a human genetic disease, hereditary tyrosinemia type I related DNA sequences. A novel adenosine based molecular beacon (ABMB) probe modified on gold nanoparticle was used as reporter probe. In the presence of coralyne, a small molecule which can react with adenosines, the ABMB would form a hairpin structure just like traditional molecular beacon used extensively. In the presence of target DNA sequences, the hairpin structure of ABMB modified on gold nanoparticles will be opened and the biotin group modified at one end of the DNA probes will be released and react with the streptavidin immobilized on the test zone of the cotton thread. The response of the thread based DNA test device is linear over the range of 2.5-100 nM complementary DNA. The ability of our developed device for discriminating the single base mismatched DNA related to a human genetic disease, hereditary tyrosinemia type I, was improved comparing with previous report. It is worth mentioning that the whole assay procedure for DNA test is performed under room temperature which simplified the assay procedures greatly.
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi Province 710127, PR China.
authors.forename: Ting-E
authors.initials: TE
authors.lastname: Du
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi Province 710127, PR China.
authors.forename: Yiyun
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi Province 710127, PR China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi Province 710127, PR China.
authors.forename: Tian
authors.initials: T
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi Province 710127, PR China. Electronic address: xunmao@nwu.edu.cn.
authors.forename: Xun
authors.initials: X
authors.lastname: Mao
mesh_terms: D000241:Adenosine / Q000032:analysis*; D032561:Cotton Fiber; D006801:Humans; D015335:Molecular Probes; D009693:Nucleic Acid Hybridization; D009696:Nucleic Acids / Q000032:analysis*; D013696:Temperature
chemical_list: D015335:Molecular Probes; D009696:Nucleic Acids; D000241:Adenosine
keywords: Cotton thread device; Point-of-care diagnosis; Room temperature; Single base mismatch discrimination