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Carbon dots with red emission as nanoprobe for sensing of heparin in biofluids and pharmaceutical samples.
RSC Adv
January 2025
Medicinal Plants Research Center, Yasuj University of Medical Sciences Yasuj Iran.
Heparin (HEP) is one of the oldest anticoagulant drugs, widely used in clinical settings, particularly in surgery and dialysis machines. Despite its long history, it remains extensively employed in medical practice. This study introduces a selective and cost-effective method for the rapid detection of HEP using red-emission carbon dots (R-CDs).
View Article and Find Full Text PDFReaction and interaction dynamics of azobenzene-tethered DNA with T7 RNA polymerase.
Phys Chem Chem Phys
January 2025
Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
Reaction and interaction dynamics of azobenzene-tethered DNA (photoresponsive DNA) with T7 RNA polymerase (T7RNAP) were studied after photoisomerization of azobenzene from the - to -forms using the transient grating (TG) and time-resolved fluorescence polarization techniques. Two types of photoresponsive DNA were examined: AzoPBD, tethered at the protein binding site, and AzoTATA, tethered at the unwinding site. A diffusion change was observed after photoexcitation of -AzoPBD within 1 ms, and this change is explained in terms of a structural change from a bent to an extended conformation upon the -to- photoisomerization.
View Article and Find Full Text PDFA green bioanalytical spectrofluorimetric approach for estimation of Avapritinib anti-tumor drug; application to quality control and clinical studies.
Bioanalysis
January 2025
Natural and Medical Sciences Research Center, University of Nizwa, Nizwa, Oman.
Aims: Gastrointestinal stromal tumors (GISTs) account for about 80% of the mesenchymal tumors of the GI tract. About 5000-6000 patients are diagnosed in the United States (US) alone, and up to 14.5 cases per million discovered in Europe annually.
View Article and Find Full Text PDFDirected Evolution of Multicyclic Peptides Using Yeast Display for Sensitive and Selective Fluorescent Analysis of CD28 on the Cell Surface.
Anal Chem
January 2025
The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
CD28 is a costimulatory receptor that provides the second signal necessary for T-cell activation and is associated with diseases, including rheumatoid arthritis, asthma, and cancer. Targeting CD28 is crucial for both functional bioanalysis and therapeutic development. Molecular probes, particularly fluorescent probes, can enhance our understanding of CD28's cellular roles.
View Article and Find Full Text PDFAmidine-functionalized aggregation-induced emission luminogen and a 3D-printed digital sensor platform for ultrafast and visual detection of heparin.
Anal Chim Acta
February 2025
College of Chemistry, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications, Food Laboratory of Zhongyuan, Zhengzhou University, Zhengzhou, 450001, China.
Background: Heparin is a widely used anticoagulant in clinic. However, improper dosing can increase the risk of thromboembolic events, potentially leading to life-threatening complications. Clinic monitoring of heparin is very important for its use safety.
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