THE DEPENDENCE OF THE CHAIN BRANCHING DEGREE ON MOLECULAR WEIGHT: FRACTAL ANALYSIS

The fractal analysis methodology allows the clear structural identification of both chemical and physical factors controlling a chain branching degree. The effective number of branching centers per one macromolecule m is controlled by four factors: polymer molecular weight, MW, maximal “chemical” density of reactive centers, cch, dimension of non-screening surface of macromolecular coil, du, and its fractal dimension, D. The presented research allows the determination of the critical value, Dcr = 1.10, the lower of which branching degree is equal to zero (i.e., branching does not occur

Development of a technology for expression of recombinant human erythropoietin in cultured mammalian cells using alphavirus expression system

Currently there are no industrial eukaryotic expression systems other than transient expression from plasmids or expression from genes integrated into host genome. Both approaches (use of eukaryotic plasmids or chromosomal integration) suffer from poor scalability and often from poor yields. Although, in laboratory settings, effective means for transducing of cultured cells to express foreign proteins and for high-level transient expression were developed based on viral genomes. We thought to develop a scalable and suitable for industrial application technology for the production of recombinant human erythropoietin (EPO) in mammalian cell cultures using an expression vector based on the genome of RNA virus

Development of a technology for expression of recombinant human erythropoietin in cultured mammalian cells using alphavirus expression system

Currently there are no industrial eukaryotic expression systems other than transient expression from plasmids or expression from genes integrated into host genome. Both approaches (use of eukaryotic plasmids or chromosomal integration) suffer from poor scalability and often from poor yields. Although, in laboratory settings, effective means for transducing of cultured cells to express foreign proteins and for high-level transient expression were developed based on viral genomes. We thought to develop a scalable and suitable for industrial application technology for the production of recombinant human erythropoietin (EPO) in mammalian cell cultures using an expression vector based on the genome of RNA virus

The interaction of dark matter cusp with the baryon component in disk galaxies

In this paper we examine the effect of the formation and evolution of the disk galaxy on the distribution of dark halo matter. We have made simulations of isolated dark matter (DM) halo and two component (DM + baryons). N-body technique was used for stellar and DM particles and TVD MUSCL scheme for gas-dynamic simulations. The simulations include the processes of star formation, stellar feedback, heating and cooling of the interstellar medium. The results of numerical experiments with high spatial resolution let us to conclude in two main findings. First, accounting of star formation and supernova feedback resolves the so-called problem of cusp in distribution of dark matter predicted by cosmological simulations. Second, the interaction of dark matter with dynamic substructures of stellar and gaseous galactic disk (e.g., spiral waves, bar) has an impact on the shape of the dark halo. In particular, the in-plane distribution of dark matter is more symmetric in runs, where the baryonic component was taken into account.Comment: 7 pages, 6 figure

Split core technology allows efficient production of virus-like particles presenting a receptor-contacting epitope of human IgE

Immunoglobulin E (IgE) plays a central role in type I hypersensitivity including allergy and asthma. Novel treatment strategy envisages development of a therapeutic vaccine designed to elicit autologous blocking antibodies against the IgE. We sought to develop an IgE-epitope antigen that induces antibodies against a receptor-contacting epitope on human IgE molecule

Split core technology allows efficient production of virus-like particles presenting a receptor-contacting epitope of human IgE

Immunoglobulin E (IgE) plays a central role in type I hypersensitivity including allergy and asthma. Novel treatment strategy envisages development of a therapeutic vaccine designed to elicit autologous blocking antibodies against the IgE. We sought to develop an IgE-epitope antigen that induces antibodies against a receptor-contacting epitope on human IgE molecule

Development of a recombinant foot -and-mouth disease vaccine

Foot-and-mouth disease (FMD) is important disease of cloven-foot animals including cows and swine. Although annual vaccination against the FMD is mandated in regions of South Kazakhstan, outbreaks of the disease are registered every year. These outbreaks result in huge economic losses because international rules require culling of all the diseased and contacted animals and all products from these animals must be destroyed. Currently available anti-FMD vaccines are all produced using the original technology of inactivation of virus (foot-and-mouth disease virus, FMDV) grown in cell cultures. Recombinant anti-FMD vaccine is a long anticipated development in the industry because the recombinant vaccine is safe and compatible with diagnostic tests for discrimination of diseased and vaccinated animals (DIVA)

Development of a recombinant foot -and-mouth disease vaccine

Foot-and-mouth disease (FMD) is important disease of cloven-foot animals including cows and swine. Although annual vaccination against the FMD is mandated in regions of South Kazakhstan, outbreaks of the disease are registered every year. These outbreaks result in huge economic losses because international rules require culling of all the diseased and contacted animals and all products from these animals must be destroyed. Currently available anti-FMD vaccines are all produced using the original technology of inactivation of virus (foot-and-mouth disease virus, FMDV) grown in cell cultures. Recombinant anti-FMD vaccine is a long anticipated development in the industry because the recombinant vaccine is safe and compatible with diagnostic tests for discrimination of diseased and vaccinated animals (DIVA)