We report the first chemical probe for bioorthogonal chemical tagging of post-translationally cholesterylated proteins with an azide in living cells. This enables rapid multiplexed fluorescence detection and affinity labelling of protein cholesterylation, as exemplified by Sonic hedgehog protein, opening up new approaches for the de novo identification of cholesterylated proteins.
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http://dx.doi.org/10.1039/c0cc04710d | DOI Listing |
Angew Chem Int Ed Engl
December 2024
The development of innovative strategies enabling chemical reactions in living systems is of great interest for exploring and manipulating biological processes. Herein, we present a pioneering approach based on both bioorthogonal and confined chemistry for intracellular drug synthesis. Exploiting a click-to-release reaction, we engineered nanoparticles capable of synthesizing drugs within cellular environments through bioorthogonal reactions with cyclooctynes.
View Article and Find Full Text PDFBioorg Chem
December 2024
School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, China. Electronic address:
Unnatural chemically modified nucleotide sugars UDP-4-SH-GalNAc was synthesized for the first time from a previously reported Benzyl 2-Amino-glucoypranoside derivative, with a total yield of 18.6%. UDP-4-SH-GalNAc was smaller in size than UDP-GalNAc calculated by Multiwfn, and its binding capability with glycosyltransferase was stronger than that of UDP-GalNAc and glycosyltransferase, which means the unnatural nucleotide sugars is equally well recognized by the enzyme and doped into the sugar chains.
View Article and Find Full Text PDFJ Control Release
December 2024
Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, VIC 3052, Australia; Materials Science and Engineering, Monash University, Clayton, VIC 3800, Australia; Department of Pharmacy, University of Copenhagen Universitetsparken 2, 2100 Copenhagen, Denmark. Electronic address:
New modes of targeted drug delivery are emerging with promise of enhancing therapeutic efficacy while reducing side effects. This review examines the landscape of metabolic glycan labelling-a technique gaining traction for its potential in specific drug targeting. By exploiting the natural glycan synthetic pathway of monosaccharides, unnatural sugar analogues are incorporated into glycoproteins, allowing for the presentation of unique functional groups on cells.
View Article and Find Full Text PDFMed Res Rev
December 2024
Department of Medicinal Chemistry, Laboratory of Medicinal Chemical Biology, College of Pharmaceutical Sciences, Soochow University, Suzhou, China.
Traditional prodrug strategies have been leveraged to overcome many inherent drawbacks of active native drugs in the drug research and development. However, endogenous stimuli such as specific microenvironment or enzymes are relied on to achieve the prodrug activation, resulting in unintended drug release and systemic toxicity. Alternatively, bioorthogonal cleavage reaction-enabled bioorthogonal prodrugs activation via exogenous triggers has emerged as a valuable approach, featuring spatiotemporally controlled drug release.
View Article and Find Full Text PDFRSC Chem Biol
December 2024
Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle Lille France
Herein, we report the synthesis, photophysical characterization and validation of iridium(iii)-polypyridine complexes functionalized for click chemistry and bioorthogonal chemistry, as well as their versatile applications as probes in bioimaging studies exploiting metabolic labeling. The designed dyes are conjugated to chemical reporters in a specific manner within cells by CuAAC ligation and display attractive photophysical properties in the UV-visible range. They are indeed highly photostable and emit in the far-red to near-IR region with long lifetimes and large Stokes shifts.
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