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Chemoselective Stabilized Triphenylphosphonium Probes for Capturing Reactive Carbonyl Species and Regenerating Covalent Inhibitors with Acrylamide Warheads in Cellulo.
J Am Chem Soc
December 2024
Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, Taipei 106319, Taiwan (R.O.C.).
Reactive carbonyl species (RCS) are important biomarkers of oxidative stress-related diseases because of their highly reactive electrophilic nature. Despite their potential as triggers for prodrug activation, selective labeling approaches for RCS remain limited. Here, we utilized triphenylphosphonium groups to chemoselectively capture RCS via an aqueous Wittig reaction, forming α,β-unsaturated carbonyls that enable further functionalization.
View Article and Find Full Text PDFEnhanced Ammonia Capture for Adsorption Heat Pumps Using a Salt-Embedded COF Aerogel Composite.
Gels
November 2024
School of Mechanical and Aerospace Engineering, Gyeongsang National University, Jinju 52828, Republic of Korea.
Adsorption heat pumps (AHPs) have garnered significant attention due to their efficient use of low-grade thermal energy, eco-friendly nature, and cost-effectiveness. However, a significant challenge lies in developing adsorbent materials that can achieve a high uptake capacity, rapid adsorption rates, and efficient reversible release of refrigerants, such as ammonia (NH). Herein, we developed and synthesized a novel salt-embedded covalent organic framework (COF) composite material designed for enhanced NH capture.
View Article and Find Full Text PDFRepurposing the Antihypertensive Agent Hydralazine As an Inhibitor of the Base Excision Repair Enzyme APE1.
Chem Res Toxicol
December 2024
University of Missouri, Department of Chemistry, 125 Chemistry Building, Columbia, Missouri 65211, United States.
Apurinic/apyrimidinic endonuclease 1 (APE1) is a central enzyme in the base excision repair (BER) pathway. APE1 catalyzes incision of the phosphodiester linkage on the 5'-side of apurinic/apyrimidinic (AP) sites during the repair of damaged nucleobases in cellular DNA. Inhibition of this enzyme can potentiate the action of DNA-damaging chemotherapeutic agents.
View Article and Find Full Text PDFDirect covalent attachment of fluorescent molecules on plasma polymerized nanoparticles: a simplified approach for biomedical applications.
J Mater Chem B
December 2024
School of Physics, University of Sydney, Sydney, NSW 2006, Australia.
Polymeric nanoparticles surface functionalised with fluorescent molecules hold significant potential for advancing diagnostics and therapeutic delivery. Despite their promise, challenges persist in achieving robust attachment of fluorescent molecules for real-time tracking. Weak physical adsorption, pH-dependent electrostatic capture, and hydrophobic interactions often fail to achieve stable attachment of fluorescent markers.
View Article and Find Full Text PDFCross-Linking Mass Spectrometry to Capture Protein Network Dynamics of Cell Membranome.
Methods Mol Biol
December 2024
Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy.
Interactions among proteins are fundamental in driving functions and activities that regulate cell biology, mechanotransduction, and cell-to-cell communication/recognition. Recently, cross-linking mass spectrometry (XL-MS) has emerged as a powerful tool for interaction discovery and characterization, driving the enlightenment of novel binding partners otherwise undetected. Covalent linkages of two amino acid residues of proteins (or within complexes) in close proximity can be identified by MS, thus providing structural insights such as distance restraints or unraveling interaction dynamics.
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