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Surface-Based Multimeric Aptamer Generation and Bio-Functionalization for Electrochemical Biosensing Applications.

التفاصيل البيبلوغرافية
العنوان: Surface-Based Multimeric Aptamer Generation and Bio-Functionalization for Electrochemical Biosensing Applications.
المؤلفون: Hamidi SV; Department of Bioengineering, McGill University, Montreal, Quebec, H3A 0E9, Canada., Jahromi AK; Department of Bioengineering, McGill University, Montreal, Quebec, H3A 0E9, Canada., Hosseini II; Department of Bioengineering, McGill University, Montreal, Quebec, H3A 0E9, Canada., Moakhar RS; Department of Bioengineering, McGill University, Montreal, Quebec, H3A 0E9, Canada., Collazos C; Department of Medicine, McGill University, Montreal, Quebec, H4A 3J1, Canada.; Lady Davis Institute for Medical Research and McGill Centre for Viral Diseases, Jewish General Hospital, Montreal, Quebec, 3T 1E2, Canada., Pan Q; Department of Medicine, McGill University, Montreal, Quebec, H4A 3J1, Canada.; Lady Davis Institute for Medical Research and McGill Centre for Viral Diseases, Jewish General Hospital, Montreal, Quebec, 3T 1E2, Canada., Liang C; Department of Medicine, McGill University, Montreal, Quebec, H4A 3J1, Canada.; Lady Davis Institute for Medical Research and McGill Centre for Viral Diseases, Jewish General Hospital, Montreal, Quebec, 3T 1E2, Canada., Mahshid S; Department of Bioengineering, McGill University, Montreal, Quebec, H3A 0E9, Canada.; Division of Experimental Medicine, McGill University, Montreal, Quebec, H3A 0G4, Canada.
المصدر: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2024 Aug 05; Vol. 63 (32), pp. e202402808. Date of Electronic Publication: 2024 Jul 04.
نوع المنشور: Journal Article; Research Support, Non-U.S. Gov't
اللغة: English
بيانات الدورية: Publisher: Wiley-VCH Country of Publication: Germany NLM ID: 0370543 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1521-3773 (Electronic) Linking ISSN: 14337851 NLM ISO Abbreviation: Angew Chem Int Ed Engl Subsets: MEDLINE
أسماء مطبوعة: Publication: <2004-> : Weinheim : Wiley-VCH
Original Publication: Weinheim/Bergstr. : New York, : Verlag Chemie ; Academic Press, c1962-
مواضيع طبية MeSH: Electrochemical Techniques*/instrumentation , Electrochemical Techniques*/methods , Biosensing Techniques*/instrumentation , Biosensing Techniques*/methods , Aptamers, Nucleotide*/chemistry , Aptamers, Nucleotide*/genetics , Nucleic Acid Amplification Techniques*/instrumentation , Nucleic Acid Amplification Techniques*/methods, Nucleic Acid Conformation ; Surface Properties ; DNA, Circular/chemistry ; DNA, Circular/genetics ; Gene Amplification ; Humans ; COVID-19/diagnosis ; COVID-19/virology ; SARS-CoV-2/genetics ; SARS-CoV-2/isolation & purification ; Spike Glycoprotein, Coronavirus/genetics
مستخلص: Multimeric aptamers have gained more attention than their monomeric counterparts due to providing more binding sites for target analytes, leading to increased affinity. This work attempted to engineer the surface-based generation of multimeric aptamers by employing the room temperature rolling circle amplification (RCA) technique and chemically modified primers for developing a highly sensitive and selective electrochemical aptasensor. The multimeric aptamers, generated through surface RCA, are hybridized to modified spacer primers, facilitating the positioning of the aptamers in the proximity of sensing surfaces. These multimeric aptamers can be used as bio-receptors for capturing specific targets. The surface amplification process was fully characterized, and the optimal amplification time for biosensing purposes was determined, using SARS-CoV-2 spike protein (SP). Interestingly, multimeric aptasensors produced considerably higher response signals and affinity (more than 10-fold), as well as higher sensitivity (almost 4-fold) compared to monomeric aptasensors. Furthermore, the impact of surface structures on the response signals was studied by utilizing both flat working electrodes (WEs) and nano-/microislands (NMIs) WEs. The NMIs multimeric aptasensors showed significantly higher sensitivity in buffer and saliva media with the limit of detection less than 2 fg/ml. Finally, the developed NMIs multimeric aptasensors were clinically challenged with several saliva patient samples.
(© 2024 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.)
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معلومات مُعتمدة: 257352 Canadian Institutes of Health Research (CIHR); 250611 MI4 Emergency COVID-19 Research Funding; G247765 Natural Science and Engineering Research Council of Canada (NSERC)
فهرسة مساهمة: Keywords: Electrochemical aptasensor; Multimeric aptamers; Nano-/microislands; Room temperature rolling circle amplification
المشرفين على المادة: 0 (Aptamers, Nucleotide)
0 (DNA, Circular)
0 (spike protein, SARS-CoV-2)
0 (Spike Glycoprotein, Coronavirus)
تواريخ الأحداث: Date Created: 20240520 Date Completed: 20240730 Latest Revision: 20240730
رمز التحديث: 20240731
DOI: 10.1002/anie.202402808
PMID: 38764376
قاعدة البيانات: MEDLINE
الوصف
تدمد:1521-3773
DOI:10.1002/anie.202402808