Results 201 to 210 of about 7,636 (247)
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Structured liquids stabilized by polyethyleneimine surfactants
Soft Matter, 2023We present a novel polyethyleneimine surfactant (PEIS) with redox responsiveness. With PEIS, emulsions and all-liquid devices can be constructed, showing promising applications in encapsulation, cargo release, and chemical separations.
Mingwei Li +7 more
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Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1973
Abstract Nucleic acids in microbial extracts can be efficiently precipitated with a cationic polymer, polyethyleneimine under conditions where there is little protein precipitation or enzyme denaturation. The binding of nucleic acids and proteins to immobilised polyethyleneimine at low ionic strength and their subsequent chromatography is also ...
A, Atkinson, G W, Jack
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Abstract Nucleic acids in microbial extracts can be efficiently precipitated with a cationic polymer, polyethyleneimine under conditions where there is little protein precipitation or enzyme denaturation. The binding of nucleic acids and proteins to immobilised polyethyleneimine at low ionic strength and their subsequent chromatography is also ...
A, Atkinson, G W, Jack
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Polyethyleneimine-Based Nanocarriers for Gene Delivery
Current Pharmaceutical Design, 2015There is a tremendous progress in the design and synthesis of nano-scaled, non-viral carriers in the previous two decades. The nanodelivery systems can significantly improve biopharmaceutical features, pharmacokinetic properties and therapeutic efficacy of entrapped drugs.
Xia, Wang +3 more
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Effects of Polyethyleneimine on Endocytosis and Lysosome Stability
Biochemical Pharmacology, 1998Polyethyleneimine (PEI) is shown to destabilize isolated rat liver lysosomes, as indicated by a decrease in the latency of their acid N-acetyl-beta-glucosaminidase. PEI also inhibited the generation of radiolabeled digestion products from 125I-labeled bovine serum albumin endocytosed by rat visceral yolk sac in vitro.
A R, Klemm, D, Young, J B, Lloyd
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Martini Force Field for Protonated Polyethyleneimine
Journal of Computational Chemistry, 2019Polyethyleneimine (PEI), one of the most widely used nonviral gene carriers, was investigated in the presented work at coarse‐grained (CG) level. The main focus was on elaborating a realistic CG force field (FF) aimed to reproduce dynamic structural features of protonated PEI chains and, furthermore, to enable massive simulations of DNA–PEI complex ...
Titus Adrian Beu +2 more
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Journal of Colloid and Interface Science, 1987
Abstract Glutaraldehyde-reacted polyethyleneimine (PEI-G) is a more hydrophobic cationic polymer than polyethyleneimine (PEI). This gives rise to significantly different adsorption modes of water-dissolved PEI-G and PEI on polyethylene (PE) and mica substrates, particularly around pH 9, as shown by means of ESCA.
Carl-Gustaf Gölander +1 more
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Abstract Glutaraldehyde-reacted polyethyleneimine (PEI-G) is a more hydrophobic cationic polymer than polyethyleneimine (PEI). This gives rise to significantly different adsorption modes of water-dissolved PEI-G and PEI on polyethylene (PE) and mica substrates, particularly around pH 9, as shown by means of ESCA.
Carl-Gustaf Gölander +1 more
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CHARMM force field for protonated polyethyleneimine
Journal of Computational Chemistry, 2018We present a revised version of our previously published atomistic Chemistry at Harvard Macromolecular Mechanics (CHARMM) force field for polyethyleneimine (PEI). It is based on new residue types (with symmetric CNC backbone), whose integer charges and bonded parameters are derived from ab initio calculations on an enlarged set of model polymers ...
Titus Adrian Beu +2 more
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Microencapsulation within crosslinked polyethyleneimine membranes
Journal of Microencapsulation, 1994A microencapsulation technique is proposed involving the formation of a polyethyleneimine (PEI) membrane crosslinked by an acid dichloride. The membranes were formed at pH 8 in a non-polar solvent, conditions which are better suited for the encapsulation of biocatalysts or fragile biochemicals than those using polyamide membranes. The mean diameter and
D, Poncelet +3 more
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Polyethyleneimine-based immunoadjuvants for designing cancer vaccines
Journal of Materials Chemistry B, 2022PEI-based cancer vaccines increase the cellular uptake of antigens and adjuvants by dendritic cells and promote activation and antigen cross-presentation to effectively cross-prime antigen-specific T cells and B cells for robust antitumor immunity.
Xi Yang +7 more
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Adenine and thymine grafts on polyethyleneimine
Journal of Polymer Science Part A: Polymer Chemistry, 1989AbstractGraft polymers of three different molecular weights of polyethyleneimine (PEI) with 9‐(vinylsulfonylethyl) (9‐VSE)‐adenine and 1‐(vinylsulfonylethyl) (1‐VSE)‐thymine were prepared. PEI's having molecular weights of 600, 1200, and 1800 were used and various ratios of VSE‐nucleobases to ethyleneimine were employed in the grafting process.
Walter T. Smith +3 more
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