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Preparation of Zwitterionic Sulfobetaines and Study of Their Thermal Properties and Nanostructured Self-Assembling Features.
Nanomaterials (Basel)
January 2025
Renewable Energy Laboratory, National Laboratory Astana, Nazarbayev University, Astana 010000, Kazakhstan.
Zwitterionic polymers have garnered significant attention for their distinctive properties, such as biocompatibility, antifouling capabilities, and resistance to protein adsorption, making them promising candidates for a wide range of applications, including drug delivery, oil production inhibitors, and water purification membranes. This study reports the synthesis and characterization of zwitterionic monomers and polymers through the modification of linear, vinyl, and aromatic heterocyclic functional groups via reaction with 1,3-propanesultone. Four zwitterionic polymers with varying molecular structures-ranging from linear to five and six membered ring systems-were synthesized: poly(sulfobetaine methacrylamide) (pSBMAm), poly(sulfobetaine-1-vinylimidazole) (pSB1VI), poly(sulfobetaine-2-vinylpyridine) (pSB2VP), and poly(sulfobetaine-4-vinylpyridine) (pSB4VP).
View Article and Find Full Text PDFComparative Proteomics of Resistant and Susceptible Strains of Frankliniella occidentalis to Abamectin.
Electrophoresis
January 2025
Department of Cell & Molecular Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran.
Western flower thrips, Frankliniella occidentalis (Thysanoptera: Thripidae) is an invasive agricultural pest with developed resistance to abamectin in some strains due to frequent treatment with the pesticide. In this study, we examined differentially expressed proteins (DEPs) between abamectin-resistant (Aba; under abamectin selective pressure) and susceptible strains (Aba; without abamectin selective pressure) of F. occidentalis.
View Article and Find Full Text PDFHydrodynamic characterization of the FtsZ protein from Escherichia coli demonstrates the presence of two types of trimers.
Anal Biochem
January 2025
Laboratorio de Biología Estructural y Molecular BEM, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425 Ñuñoa, Santiago 7800003, Chile; Laboratorio de Biotecnología Vegetal y Ambiental Aplicada, Universidad Tecnológica Metropolitana, Santiago, Chile.
FtsZ is a bacterial protein that plays a crucial role in cytokinesis by forming the Z-ring. This ring acts as a scaffold to recruit other division proteins and guide the synthesis of septal peptidoglycan, which leads to cell constriction. In its native state, the FtsZ protein from Escherichia coli (EcFtsZ) is a multi-oligomer comprising dimers, trimers, tetramers, and hexamers in a dynamic self-association equilibrium depending on its concentration.
View Article and Find Full Text PDFDistinct molecular properties and functions of small EV subpopulations isolated from human umbilical cord MSCs using tangential flow filtration combined with size exclusion chromatography.
J Extracell Vesicles
January 2025
State Key Laboratory of Reproductive Medicine and offspring health, Nanjing Medical University, Nanjing, China.
As functional derivatives of mesenchymal stem cells (MSCs), small extracellular vesicles (sEVs) have garnered significant attention and application in regenerative medicine. However, the technical limitations for large-scale isolation of sEVs and their heterogeneous nature have added complexity to their applications. It remains unclear if the heterogeneous sEVs represent different aspects of MSCs functions.
View Article and Find Full Text PDFIsolation of a Unique Monoterpene Diperoxy Dimer From Ziziphora clinopodioides subsp. bungeana Together With Triterpenes With Antidiabetic Properties.
Phytochem Anal
January 2025
Department of Natural Drugs, Faculty of Pharmacy, Masaryk University, Brno, Czech Republic.
Introduction: Ziziphora clinopodioides subsp. bungeana (Juz.) Rech.
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