Synthesis of 2'-modified oligonucleotides from 2'-methoxyoxalamido (MOX) and 2'-succinimido (SUC) precursors is described. Their physical and biochemical properties were assessed. Synthesized oligonucleotides were used as primers in advanced DNA sequencing protocols. An example of sequencing directly off genomic DNA template without prior cloning or PCR amplification is presented.
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http://dx.doi.org/10.1081/NCN-100002326 | DOI Listing |
Biosens Bioelectron
November 2024
State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, School of Public Health, Jilin University, Changchun, 130021, China. Electronic address:
Detection methods based on CRISPR/Cas12a have been widely developed in the application of pathogenic microorganisms to guarantee food safety and public health. For sensitive detection, the CRISPR-based strategies are often in tandem with amplification methods. However, that may increase the detection time and the process may introduce nucleic acid contamination resulting in non-specific amplification.
View Article and Find Full Text PDFNucleic Acids Res
September 2024
MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, 510006 Guangzhou, China.
Xenobiotic nucleic acids (XNAs) are artificial genetic polymers with altered structural moieties and useful features, such as enhanced biological and chemical stability. Enzymatic synthesis and efficient labelling of XNAs are crucial for their broader application. Terminal deoxynucleotidyl transferases (TdTs) have been exploited for the de novo synthesis and labelling of DNA and demonstrated the capability of recognizing various substrates.
View Article and Find Full Text PDFFood Chem
November 2024
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China. Electronic address:
Bioorg Med Chem
February 2024
Department of Chemistry, Indian Institute of Technology Kharagpur, West Bengal 721302, India. Electronic address:
Herein, we report the synthesis of 2'-O-alkyl/2'-fluoro-N-methyluridine (2'-O-alkyl/2'-F-mU) phosphoramidites and their incorporation in DNA and RNA oligonucleotides. The duplex binding affinity and base discrimination studies showed that all 2'-O-alkyl/2'-F-mU modifications significantly decreased the thermal stability and base-pairing discrimination ability. Serum stability study of dT with 2'-O-alkyl-mU modification exhibited excellent nuclease resistance when incubated with 3'-exonucleases (SVPD) or 5'-exonucleases (PDE-II) as compared to mU, 2'-F, 2'-OMe modified oligonucleotides.
View Article and Find Full Text PDFBioconjug Chem
September 2023
Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182, 91405, Orsay, France.
The development of facile methods for conjugating relevant probes, ligands, or delivery agents onto oligonucleotides (ONs) is highly desirable both for fundamental studies in chemical biology and for improving the pharmacology of ONs in medicinal chemistry. Numerous efforts have been focused on the introduction of bioorthogonal groups onto phosphoramidite building blocks, allowing the controlled chemical synthesis of reactive ONs for postsynthetic modifications. Among these building blocks, alkyne, cyclooctynes, -cyclooctene, and norbornene have been proved to be compatible with automated solid-phase chemistry.
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