|
Charged Polymers Modulate Retrovirus Transduction via Membrane Charge Neutralization and Virus Aggregation
From:
Biophysical Journal
| Date:
February 1, 2004| Author:
Morgan, Jeffrey R; Rosinski, Matthew; Yarmush, Martin L; Davis, Howard E
| Copyright Biophysical Society Feb 2004. Provided by ProQuest LLC.Copyright information
|
ABSTRACT
The specific mechanisms of charged polymer modulation of retrovirus transduction were analyzed by characterizing their effects on virus transport and adsorption. From a standard colloidal perspective two mechanisms, charge shielding and virus aggregation, can potentially account for the experimentally observed changes in adsorption behavior and biophysical parameters due to charged polymers. Experimental testing revealed that both mechanisms could be at work depending on the c...
Related newspaper, magazine, and journal articles from HighBeam Research
|
Ultrafiltered perfluoropolyether lubricant under molecular weight distributin control
Tribology Transactions
; There are many problems to be overcome when storage devices are used at high-speed rotation and very small spacing between the head and disk. One of them is lubricant spin-off. Lubricant spin-off and lubricity have a close relation to the molecular weight distribution. The commercial
|
|
Antitumor Effects of Various Low-Molecular-Weight Chitosans Are Due to Increased Natural Killer Activity of Intestinal Intraepithelial Lymphocytes in Sarcoma 180-Bearing Mice1
The Journal of Nutrition
; ABSTRACT Various low-molecular-weight chitosans such as the 21-kDa, 46-kDa, and 120-kDa chitosans obtained by enzymatic hydrolysis of a high-molecular-weight chitosan (average molecular weight, 650 kDa) had low viscosity and were water soluble. We examined the antitumor activity of various
|
|
Polymer with right molecular weight and distribution.
New Materials Japan
; Sumitomo Chemical Co Ltd has developed an amorphous olefin polymer, which has a sufficiently high molecular weight to be used as an adhesive agent. Previously, amorphous olefin polymers have been used as sticking agents or as improving agents for a crystalline polyolefin. It has been possible to
|
|
Select the right hydrocarbon molecular weight correlation
Chemical Engineering Progress
; Understand how different techniques produce different results, and how that affects process simulation, design, and operation. Computer models of systems processing wide-boiling-range hydrocarbon streams typically represent distillation fractions as pseudocomponents. In this method, commonly known
|
|
The effect of molecular weight on fluoroelastomers cured with bisphenol AF.
Rubber World
; The use of degenerative chain transfer to prepare fluoroelastomers has been practiced for over 25 years and represents the most successful commercial application of controlled (i.e., living ) free radical polymerization (refs. 1-12). In this process, the appropriate fluoroolefins are polymerized in
|
|
Effect of Molecular Weight and Branch Structure on the Crystallization and Rheological Properties of Poly(butylene adipate).(Statistical Data Included)
Polymer Engineering and Science
; BYOUNG CHUL KIM YANG KYOO HAN [1] High molecular weight linear and branched poly(butylene adipate)s (PBAs) were prepared, and crystallization behavior and rheological properties were investigated. PBAs showed multiple melting behavior. Increasing molecular weight retarded the crystallization rate
|
|
Determination of [beta]-glucan molecular weight using SEC with calcofluor detection in cereal extracts
Cereal Chemistry
; ABSTRACT A high-performance size-exclusion chromatography system (HPSEC) was set up with detection based on the specific binding of Calcofluor to [beta]-glucan for determination of amount and molecular weight of [beta]-glucan in different cereal extracts. To calibrate the HPSEC system, a purified
|
|
High Molecular Weight Poly(ethylene oxide)-Based Drug Delivery Systems: Part I: Hydrogels and Hydrophilic Matrix Systems
Pharmaceutical Technology
; Polyethylene oxide resins are non-ionic, high molecular weight, water-soluble polymers with good hydrophilicity. Their use in controlled-release delivery systems has gained recent interest, and several oral drug delivery systems based on hydrophilic matrix and hydrogels have been successfully
|
|
Influence of molecular weight on strain-gradient yielding in polystyrene.
Polymer Engineering and Science
; INTRODUCTION Mechanical properties of polymers are usually measured by applying load to large specimens, whose size often is chosen according to some standard. In many application areas, typical dimensions are much smaller than those of the test specimens, e.g., in polymer matrix composite
|
|
Determining the molecular weight distribution of cotton cellulose: A new GPC solvent
Textile Research Journal
; ABSTRACT Dimethylimidazolidinone/lithium chloride (DMI/LiCL) is shown to be an effective solvent system for a variety of celluloses, including the high molecular weight cellulose of cotton, when a swelling pretreatment in sodium hydroxide is incorporated. DMI/0.5% LiCl is suitable for use as a
|