نتایج جستجو برای: pegylated dendrimers

تعداد نتایج: 9179  

Journal: :Journal of Chemistry 2021

Dendrimers are highly branched, star-shaped macromolecules with nanometer-scale dimensions. defined by three components: a central core, an interior dendritic structure (the branches), and exterior surface functional groups. Topological indices numerical numbers that help us to understand the topology of different dendrimers can be used predict properties without performing experiments in wet l...

Journal: :Cellular & molecular biology letters 2002
Barbara Klajnert Maria Bryszewska

Dendrimers are a relatively new class of polymer, with well-defined molecular structures. They are synthesized from a polyfunctional core by adding branched monomers that react with the functional groups of the core, in turn leaving end groups that can react again. This results in a large number of reactive terminal groups that increases after each cycle or " generation ". The structure of a gi...

Journal: :Molecules 2013
Ruth Hemmer Andrew Hall Robert Spaulding Brett Rossow Michael Hester Megan Caroway Anthony Haskamp Steven Wall Heather A Bullen Celeste Morris Kristi L Haik

Dendrimers are highly customizable nanopolymers with qualities that make them ideal for drug delivery. The high binding affinity of biotin/avidin provides a useful approach to fluorescently label synthesized dendrimer-conjugates in cells and tissues. In addition, biotin may facilitate delivery of dendrimers through the blood-brain barrier (BBB) via carrier-mediated endocytosis. The purpose of t...

2011
Tarun Garg Onkar Singh Saahil Arora Donald A. Tomalia

A dendrimer described as a macromolecule characterized by its highly branched 3D structure which provides a high degree of surface functionality and versatility. Dendrimers also referred to as the “Polymers of the 21 century.” Dendrimers components, namely (1) an initiator core (2) Interior layers (generations) composed of repeating units, radically attached to the interior core. (3) Exterior (...

Journal: :BioImpacts : BI 2012
Aliasghar Hamidi Simin Sharifi Soodabeh Davaran Saeed Ghasemi Yadollah Omidi Mohammad-Reza Rashidi

INTRODUCTION Polyamidoamine (PAMAM) dendrimers are a unique family of dendritic polymers with numerous pharmaceutical and biomedical applications. One major problem with these polymers is their cytotoxicity. The purpose of this study was to synthesize novel dendrimers with aldehyde terminal groups and compare their cytotoxicity with that of dendri¬mers containing amine-terminated groups. METH...

Journal: :Organic & biomolecular chemistry 2011
Nicolas A Uhlich Tamis Darbre Jean-Louis Reymond

Peptide dendrimers with multiple histidines or N-terminal prolines efficiently catalyze ester hydrolysis or aldol reactions in aqueous medium. Part of the catalytic proficiency of these dendritic enzyme models stems from multivalency effects observed in G2, G3 and G4 dendrimers displaying multiple catalytic groups in their branches. To study multivalency in higher generation systems, G4, G5 and...

2009
Dominic A. Lenz Ronald Blaak Christos N. Likos

With the aid of Monte Carlo simulations we investigate the equilibrium behavior of amphiphilic dendrimers, isolated as well as in the vicinity of uncharged planar walls, whereby the coreand shell-monomers constituting the dendrimer interact differently among themselves and with the wall surface. Contrary to the dense-core-forming athermal dendrimers, amphiphilic dendrimers can exhibit the so-ca...

PEGylated polypropyleneimine (PPI) dendritic scaffold was used for the delivery of an anti-leukemic drug, Imatinib. The current study evolves and emerges the use PEGylated PPI dendritic scaffold for the delivery of this drug. In this Imatinib was synthesized and loaded with PEGylated PPI dendritic scaffold. Parameters such as FT-IR, NMR, SEM, drug release, DSC and hemolytictoxicity are required...

PEGylated polypropyleneimine (PPI) dendritic scaffold was used for the delivery of an anti-leukemic drug, Imatinib. The current study evolves and emerges the use PEGylated PPI dendritic scaffold for the delivery of this drug. In this Imatinib was synthesized and loaded with PEGylated PPI dendritic scaffold. Parameters such as FT-IR, NMR, SEM, drug release, DSC and hemolytictoxicity are required...

Journal: :Bioconjugate chemistry 2004
Seungpyo Hong Anna U Bielinska Almut Mecke Balazs Keszler James L Beals Xiangyang Shi Lajos Balogh Bradford G Orr James R Baker Mark M Banaszak Holl

We have investigated poly(amidoamine) (PAMAM) dendrimer interactions with supported 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) lipid bilayers and KB and Rat2 cell membranes using atomic force microscopy (AFM), enzyme assays, flow cell cytometry, and fluorescence microscopy. Amine-terminated generation 7 (G7) PAMAM dendrimers (10-100 nM) were observed to form holes of 15-40 nm in diamete...

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