نتایج جستجو برای: dendrimer nanostar

تعداد نتایج: 2362  

Journal: :Molecules 2016
Soraya da Silva Santos Elizabeth Igne Ferreira Jeanine Giarolla

The main objective of this review is to describe the importance of dendrimer prodrugs in the design of new drugs, presenting numerous applications of these nanocomposites in the pharmaceutical field. Therefore, the use of dendrimer prodrugs as carrier for drug delivery, to improve pharmacokinetic properties of prototype, to promote drug sustained-release, to increase selectivity and, consequent...

2008
Ronald Blaak Swen Lehmann Christos N. Likos

We study the effect of chargeable monomers on the conformation of dendrimers of low generation by computer simulations, employing bare Coulomb interactions. The presence of the latter leads to an increase in size of the dendrimer due to a combined effect of electrostatic repulsion and the presence of counterions within the dendrimer and also enhances a shell-like structure for the monomers of d...

Journal: :Cancer research 2006
Meredith T Morgan Yuka Nakanishi David J Kroll Aaron P Griset Michael A Carnahan Michel Wathier Nicholas H Oberlies Govindarajan Manikumar Mansukh C Wani Mark W Grinstaff

A biocompatible polyester dendrimer composed of the natural metabolites, glycerol and succinic acid, is described for the encapsulation of the antitumor camptothecins, 10-hydroxycamptothecin and 7-butyl-10-aminocamptothecin. The cytotoxicity of the dendrimer-drug complex toward four different human cancer cell lines [human breast adenocarcinoma (MCF-7), colorectal adenocarcinoma (HT-29), non-sm...

Journal: :Journal of medicinal chemistry 2005
István J Majoros Thommey P Thomas Chandan B Mehta James R Baker

Multifunctional cancer therapeutic nanodevices have been designed and synthesized using the poly(amidoamine) (PAMAM) dendrimer as a carrier. Partial acetylation of the generation 5 (G5) PAMAM dendrimer was utilized to neutralize a fraction of the primary amino groups, provide enhanced solubility of the dendrimer during the conjugation reaction of fluorescein isothiocyanate (FITC) (in dimethyl s...

Journal: :Biomacromolecules 2007
Nathan A Stasko C Bryce Johnson Mark H Schoenfisch Timothy A Johnson Ekhson L Holmuhamedov

The cytotoxicity and time-dependent membrane disruption by polypropylenimine dendrimer conjugates on cultured human umbilical vein endothelial cells (HUVEC) is reported. Fluorescently labeled derivatives of generation 5 polypropylenimine dendrimers were prepared via conversion of amines to acetamides or through the covalent attachment of high molecular weight poly(ethylene glycol) (PEG) chains....

2012
B.N.Vedha Hari Pradeep Kumar Gajula

Nanotechnology is an emerging research field that helps in reviving the structural design, synthesis and fabrication at the molecular magnitude. There are approximately 130 nanopharmaceutical products in development including~nanoparticles, nanocrystals, dendrimers, liposomes and micelles. The increase in the selectivity and stability of therapeutic agents can be achieved with the help of Nanop...

Journal: :The Journal of chemical physics 2016
A F Smeijers A J Markvoort K Pieterse P A J Hilbers

The behavior of poly(propylene imine) (PPI) dendrimers in concentrated solutions has been investigated using molecular dynamics simulations containing up to a thousand PPI dendrimers of generation 4 or 5 in explicit water. To deal with large system sizes and time scales required to study the solutions over a wide range of dendrimer concentrations, a previously published coarse-grained model was...

Journal: :Soft matter 2014
Junyou Wang Ilja K Voets Remco Fokkink Jasper van der Gucht Aldrik H Velders

Herein, we present a facile strategy to controllably build up dendrimicelles by self-assembly of anionic PAMAM dendrimers with cationic-neutral diblock copolymers. We present a systematic study incorporating a full decade (0-9) of dendrimer generations, tracing the gradual variation from aggregates (G0 and G1) to self-assembled micelles (G2-G8), and an unidendrimer micelle structure (G9) by dif...

Journal: :Nanomedicine : nanotechnology, biology, and medicine 2013
Hervé C Gérard Manoj K Mishra Guangzhao Mao Sunxi Wang Mirabela Hali Judith A Whittum-Hudson Rangaramanujam M Kannan Alan P Hudson

UNLABELLED The chlamydiae are important human pathogens. Lack of a genetic manipulation system has impeded understanding of the molecular bases of virulence for these bacteria. We developed a dendrimer-enabled system for transformation of chlamydiae and used it to characterize the effects of inserting the C. trachomatis plasmid into C. pneumoniae, which lacks any plasmids. The plasmid was clone...

Journal: :Journal of Nanomaterials 2022

Dendrimers are well-defined nanoparticles, which have far-reaching application in the field of chemistry. Many efforts been devoted to development dendrimer due thier unique structure and various properties broad application. It helps varieties purposes as a catalyst drug delivery design. The topological descriptor analyze structure–property relationship chemical compounds. In this paper, some ...

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