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Obesity is a global health crisis, with its prevalence particularly severe in the United States, where over 42% of adults are classified as obese. Obesity is driven by complex molecular and tissue-level mechanisms that remain poorly understood. Among these, angiogenesis-primarily mediated by vascular endothelial growth factor (VEGF-A)-is critical for adipose tissue expansion but presents unique challenges for therapeutic targeting due to its intricate regulation.
View Article and Find Full Text PDFGold nanoparticles supported onto zwitterionic polymer capillary monoliths meant for efficient enrichment of microcystins in water.
Talanta
December 2024
Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, 350116, China; International (HongKong Macao and Taiwan) Joint Laboratory on food safety and environmental analysis, Fuzhou, 350116, Fuzhou University, China; Engineering Technology Research Center on Reagent and Instrument for Rapid Detection of Product Quality and Food Safety, Fuzhou, 350116, China. Electronic address:
The release of microcystin (MCs) in aquatic ecosystems poses a substantial risk to the safety of irrigation and drinking water. In view of the challenges associated with monitoring MCs in water bodies, given their low concentration levels (μg/L to ng/L) and the presence of diverse matrix interferences, there is an urgent need to develop an efficient, cost-effective and selective enrichment technique for MCs prior to its quantification. In this work, a gold nanoparticles (AuNPs)-functionalized zwitterionic polymer monolith was described and further applied for the affinity enrichment of MCs.
View Article and Find Full Text PDFA New Empirical Equation to Take Into Account the Influence of Ionic Strength on Electrophoretic Mobility and Determination of Binding Constants of Ester Betulin Derivatives With Sulfated β-Cyclodextrin by Affinity Capillary Electrophoresis.
Electrophoresis
December 2024
Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center "Krasnoyarsk Science Center SB RAS", Krasnoyarsk, Russia.
An empirical equation relating electrophoretic mobility and ionic strength was proposed. The equation includes a number of parameters that are found using the mobilities of reference ions: two coefficients in the numerator describing the linear relationship of the multiplier in front of the square root of the ionic strength with the product of the ion mobility in the background electrolyte (BGE) without additives by the modulus of the charge number, raised to a certain power, and also the multiplier in the denominator before the square root of the ionic strength. The proposed equation was tested using the mobilities measured in BGEs with the addition of sodium chloride to adjust ionic strength and sulfated β-cyclodextrin (S-β-CD) for 11 anions with charge numbers from -1 to -4.
View Article and Find Full Text PDFScreening and identification of vascular endothelial cell targeting peptide in gastric cancer through novel integrated in vitro and in vivo strategy.
BMC Cancer
December 2024
Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou, 510515, Guangdong, P.R. China.
Purpose: Antiangiogenesis therapy has become a hot field in cancer research. Given that tumor blood vessels often express specific markers related to angiogenesis, the study of these heterogeneous molecules in different tumor vessels holds promise for advancing anti-angiogenic therapy. Previously using phage display technology, we identified a targeting peptide named GX1 homing to gastric cancer vessels for the first time.
View Article and Find Full Text PDFIn-depth analysis of active compounds targeting tropomyosin-related kinase A via constructed lipid raft @capillary monolith affinity chromatography.
J Chromatogr B Analyt Technol Biomed Life Sci
December 2024
School of Pharmacy, Jiangsu University, Zhenjiang 212013, China. Electronic address:
In order to enrich the selection of biological ligands, realize the miniaturization analysis, and broaden the application of monolith materials for active ingredients screening and separating, we sough to construct a lipid raft @capillary monolith microcolumn affinity chromatography model. Single factor experiments and various characterization methods, including scanning electron microscopy (SEM) and thermogravimetric analysis, were employed to investigate the polymerization of the monolith column under different material ratios to determine optimal preparation conditions. Subsequently, the lipid raft from U251 cells was integrated with the monolith materials based on epoxy-based covalent crosslinking principle and characterized through SEM and immunofluorescence methods.
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