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Development of a colloidal gold immunochromatographic assay utilizing dual-antibody sandwich method for detecting .
Front Microbiol
January 2025
College Food Science and Light Industry, Nanjing Tech University, Nanjing, China.
A colloidal gold immunochromatographic assay (ICA) based on a dual-antibody sandwich method was developed for the rapid and convenient detection of () antigens in the early stages of infection. Monoclonal antibodies designed as 5B3 targeting the conserved region of 56 kDa outer membrane protein in various strains of were generated through cell fusion and screening techniques and combined with previously prepared polyclonal antibodies as detection antibodies to establish the ICA. Colloidal gold and polyclonal antibody-colloidal gold complexes were synthesized under optimized conditions.
View Article and Find Full Text PDFTransformation of Distinct Superatoms to Superalkalis by Successive Ligation of Thymine Nucleobases.
J Phys Chem A
January 2025
Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian 350108, People's Republic of China.
The ligation strategy has been widely used in the chemical synthesis of atomically precise clusters. A series of thymine (T)-ligated Al-T ( = Be, Al, C; = 1-5) complexes have been studied to reveal the effect of DNA nucleobase ligands on the electronic structures of different superatoms in the present work. In addition to its protective role, the successive attachment of thymine ligands significantly lowers the adiabatic ionization energies (AIEs) of the studied Al superatoms with filled and unfilled electronic shells.
View Article and Find Full Text PDFAn evolved, orthogonal ssDNA generator for targeted hypermutation of multiple genomic loci.
Nucleic Acids Res
January 2025
Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
Achieving targeted hypermutation of specific genomic sequences without affecting other regions remains a key challenge in continuous evolution. To address this, we evolved a T7 RNA polymerase (RNAP) mutant that synthesizes single-stranded DNA (ssDNA) instead of RNA in vivo, while still exclusively recognizing the T7 promoter. By increasing the error rate of the T7 RNAP mutant, it generates mutated ssDNA that recombines with homologous sequences in the genome, leading to targeted genomic hypermutation.
View Article and Find Full Text PDFMeasuring XNA polymerase fidelity in a hydrogel particle format.
Nucleic Acids Res
January 2025
Department of Pharmaceutical Sciences, University of California, Irvine, CA 92697-3958, United States.
Growth in the development of engineered polymerases for synthetic biology has led to renewed interest in assays that can measure the fidelity of polymerases that are capable of synthesizing artificial genetic polymers (XNAs). Conventional approaches require purifying the XNA intermediate of a replication cycle (DNA → XNA → DNA) by denaturing polyacrylamide gel electrophoresis, which is a slow, costly, and inefficient process that requires a large-scale transcription reaction and careful extraction of the XNA strand from the gel slice. In an effort to streamline the assay, we developed a purification-free approach in which the XNA transcription and reverse transcription steps occur inside the matrix of a hydrogel-coated magnetic particle.
View Article and Find Full Text PDFNovel Quinoline Schiff-Bases as Mtb DNA Gyrase Inhibitors - A Combined In Vitro and In Silico Study.
Chem Biodivers
January 2025
University of KwaZulu-Natal College of Agriculture Engineering and Science, Department of Chemistry, Westville Campus, Durban, SOUTH AFRICA.
A new series of quinoline Schiff-bases was designed, synthesized, and characterized using 1H NMR, 13C NMR, and HRMS analysis. Further, all the compounds were screened for their antitubercular, antibacterial, and antifungal activity, and the minimum inhibitory concentrations (MICs) were determined. Among all, compound 7f displayed a significantly potent broad-spectrum antitubercular and antimicrobial activity against most of the tested strains of bacteria and fungi, with MIC values in the range of 1.
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