Efficient syntheses of a series of functionalized aryl enediynes have been developed. The building blocks were used to effect conjugation to carrier PEG templates which allowed subsequent coupling to a cardiac targeted monoclonal antibody. Immunocompetence of the enediyne-Mab conjugates was demonstrated by ELISA, and both parent enediynes and bioconjugates underwent successful photo-Bergman cyclization. Finally, surface modified (Au) nanoparticle conjugates were prepared and size confirmed by TEM analysis. Application as long-circulating photoactivated prodrugs is anticipated.
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http://dx.doi.org/10.1016/j.bmcl.2007.12.045 | DOI Listing |
J Agric Food Chem
January 2025
College of Chemistry and Chemical Engineering, Jishou University, Jishou, Hunan 416000, P. R. China.
Detecting β-lactoglobulin (β-Lg) with high sensitivity and selectivity is an urgent requirement due to nearly 80% of milk anaphylaxis, such as respiratory tract, skin urticaria, and gastrointestinal disorders, being caused by β-Lg. An ultrasensitive β-Lg electrochemical aptasensor utilizing core-satellite gold nanoparticle@silver nanocluster (AuNPs@AgNCs) nanohybrids as electrocatalysts was developed. First, β-Lg aptamer was anchored on gold electrodes and AuNPs to obtain high selectivity.
View Article and Find Full Text PDFNano Lett
January 2025
Department of Physics, Shahid Beheshti University, Tehran 1635649771, Iran.
We present a method for conjugating antigens to gold nanoparticles (GNPs) during their synthesis via gas plasma, eliminating the need for chemical linkers and significantly speeding up the process (taking only 15 min). This fast, linker-free method produces biocompatible and stable GNPs, with potential for immunotherapy applications, such as antigen and antibody conjugation and drug delivery. We demonstrate the conjugation of the antigen Nestin (NES), a tumor marker, to GNPs using two approaches.
View Article and Find Full Text PDFNanoscale Adv
January 2025
Department of Materials Science, University of Milano-Bicocca Via Cozzi 55 Milano I-20125 Italy
Hybrid nanoscintillators, which feature a heavy inorganic nanoparticle conjugated with an organic emitter, represent a promising avenue for advancements in diverse fields, including high-energy physics, homeland security, and biomedicine. Many research studies have shown the suitability of hybrid nanoscintillators for radiation oncology, showing potential to improve therapeutic results compared to traditional protocols. In this work, we studied SiO/ZnO nanoparticles functionalized with porphyrin as a photosensitizer, capable of producing cancer cytotoxic reactive oxygen species for possible use in radio-oncological therapeutics.
View Article and Find Full Text PDFChem Asian J
January 2025
Chulalongkorn University, Chemistry, THAILAND.
This research focuses on the selective detection of Hg2+ ions using hybrid nanosensors composed of rhodamine building blocks linked to polyamine units of varying chain lengths to produce Rho1-Rho4, which were subsequently conjugated with thioctic acid (RT1-RT4) and attached to the surface of gold nanoparticles to create hybrid nanosensors (GRT1-GRT4) designed for detecting heavy metals. The chemical structures, purity, morphology, and chemical composition were characterized through XRD, NMR, TEM, ATR-FTIR, and mass spectrometry. These hybrid nanosensors demonstrated excellent selectivity and sensitivity in colorimetric and fluorescence responses towards Hg2+, outperforming other metal ions.
View Article and Find Full Text PDFAdv Healthc Mater
January 2025
College of Chemistry and Chemical Engineering and Jiangxi Provincial Key Laboratory of Functional Crystalline Materials Chemistry, Nanchang University, Nanchang, 330031, China.
The stacking mode in aggregate state results from a delicate balance of supramolecular interactions, which closely affects the optoelectronic properties of organic π-conjugated systems. Then, managing these interactions is crucial for advancing phototheranostics, yet remains challenging. A subtle strategy involving peripheral phenyl groups is debuted herein to transform X-aggregated SQ-H into J-aggregated SQ-Ph, reorienting intermolecular dipole interactions while rationally modulating π-π interactions.
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