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Proteins

 

Recombinant protein
Recombinant protein
article

A history of recombinant protein technology in small molecule drug discovery

28 October 2014 | By Rick Davies, Associate Director, AstraZeneca / Ian Hardern, Senior Research Scientist, AstraZeneca / Ross Overman, Associate Principal Scientist, AstraZeneca

Recombinant protein production is a prerequisite and essential component of most modern small molecule drug discovery programs. Target proteins are required to underpin screening, structural and mechanistic studies providing data that drives chemical design. From the initial establishment of recombinant protein production in the pharmaceutical industry in the 1980s, systems…

FIGURE 1 Parties involved in the biomarker discovery and validation process. Medical Science is responsible for sample collection, pre-classification and storage in biobanks. Analytical Chemistry is responsible for developing sample preparation protocols and analytical platforms both for comprehensive biomarker discovery on low numbers of samples as well as for the targeted validation in large sample cohorts. Bioinformatics is responsible for performing the data pre-processing and statistical analysis as well as the validation of data and clinical information provided by the analytical and medical partners. A close collaboration and information exchange is essential for the success of biomarker research
FIGURE 1 Parties involved in the biomarker discovery and validation process. Medical Science is responsible for sample collection, pre-classification and storage in biobanks. Analytical Chemistry is responsible for developing sample preparation protocols and analytical platforms both for comprehensive biomarker discovery on low numbers of samples as well as for the targeted validation in large sample cohorts. Bioinformatics is responsible for performing the data pre-processing and statistical analysis as well as the validation of data and clinical information provided by the analytical and medical partners. A close collaboration and information exchange is essential for the success of biomarker research
article

Discovery and validation of protein biomarkers

10 July 2012 | By Péter Horvatovich & Rainer Bischoff, Analytical Biochemistry, Department of Pharmacy, University of Groningen

Biomarkers are biological characteristics that are objectively measured and evaluated as indicators of normal biological processes, pathogenic processes or pharmacological responses to a therapeutic intervention. Biomarkers can be used to determine disease onset, progression, efficacy of drug treatment, patient susceptibility to develop a certain type of disease or predict efficacy…

FIGURE 1miRNAs can impact viral infection directly by interacting with viral genes or indirectly by regulating host genes that play a role in the infection. miRNAs are derived from transcripts that contain stem-loop structures which get recognised and processed by a series of enzymes to generate the short (~22 nt) duplex RNA. One strand of the duplex is preferentially incorporated into the RNA-induced silencing complex (RISC) and guides this complex to mRNAs or other viral elements that contain regions of complementarity to the miRNA
FIGURE 1miRNAs can impact viral infection directly by interacting with viral genes or indirectly by regulating host genes that play a role in the infection. miRNAs are derived from transcripts that contain stem-loop structures which get recognised and processed by a series of enzymes to generate the short (~22 nt) duplex RNA. One strand of the duplex is preferentially incorporated into the RNA-induced silencing complex (RISC) and guides this complex to mRNAs or other viral elements that contain regions of complementarity to the miRNA
article

microRNA manipulation as a host-targeted antiviral therapeutic strategy

13 December 2011 | By Nouf N. Laqtom, University of Edinburgh & King Abdulaziz University and Amy H. Buck, University of Edinburgh

microRNAs (miRNA) are a class of non-coding RNA that regulate the precise amounts of proteins expressed in a cell at a given time. These molecules were discovered in worms in 1993 and only known to exist in humans in the last decade. Despite the youth of the miRNA field, miRNA…

FIGURE 1 The rapid evolution of sequencing technologies. A. First generation Sanger sequencing technology. B. Second ‘Next’ generation massively parallel sequencing technology (454 Sequencing © Roche Diagnostics) C. Third ‘Next-Next’ generation single molecule, real-time sequencing technology. In the coming years, second or third generation technologies may develop to an extent where a human genome can be sequenced for a USD 1,000 in a matter of hours
FIGURE 1 The rapid evolution of sequencing technologies. A. First generation Sanger sequencing technology. B. Second ‘Next’ generation massively parallel sequencing technology (454 Sequencing © Roche Diagnostics) C. Third ‘Next-Next’ generation single molecule, real-time sequencing technology. In the coming years, second or third generation technologies may develop to an extent where a human genome can be sequenced for a USD 1,000 in a matter of hours
article

DNA sequencing technologies and emerging applications in drug discovery

13 December 2011 | By Nalini A.L. Mehta & David J. Dow, Molecular and Cellular Technologies, Platform Technology and Science, GlaxoSmithKline and Anthony M. Battram, Molecular and Cellular Technologies, Platform Technology and Science, GlaxoSmithKline & Department of Life Sciences, Imperial College London

In recent years, the development of Next Generation DNA Sequencing (NGS) technology has significantly impacted molecular biology research, resulting in many new insights and discoveries. NGS technology goes beyond traditional DNA sequencing with applications that reach across the central dogma of molecular biology from DNA to RNA and protein science.…

FIGURE 1 Structures of active and inactive conformations of the β2 adrenoceptor Structures of the β2 adrenoceptor (light grey) in an inactive conformation with the antagonist carazolol bound (left33), and in an active conformation in complex with Gs (dark grey) and the agonist BI-167107 bound (right41). In both cases, the ligand is represented by black spheres to show the location of the orthosteric binding site within the membrane-spanning region of the protein. T4 lysozyme (black) is inserted in the third intracellular loop between helices 5 and 6 in the inactive structure (bottom left), and fused in the extracellular N-terminus for the active structure (top right), to remove flexibility and to provide polar surfaces for crystallisation. The nanobody (black, bottom right) served to stabilise the open conformation of Gs and also provided crystallisation contacts
FIGURE 1 Structures of active and inactive conformations of the β2 adrenoceptor Structures of the β2 adrenoceptor (light grey) in an inactive conformation with the antagonist carazolol bound (left33), and in an active conformation in complex with Gs (dark grey) and the agonist BI-167107 bound (right41). In both cases, the ligand is represented by black spheres to show the location of the orthosteric binding site within the membrane-spanning region of the protein. T4 lysozyme (black) is inserted in the third intracellular loop between helices 5 and 6 in the inactive structure (bottom left), and fused in the extracellular N-terminus for the active structure (top right), to remove flexibility and to provide polar surfaces for crystallisation. The nanobody (black, bottom right) served to stabilise the open conformation of Gs and also provided crystallisation contacts
article

Lead discovery for targeting G protein-coupled receptors

19 October 2011 | By Sandra Siehler and Sandra W. Cowan-Jacob, Novartis Institutes for BioMedical Research

G protein-coupled receptors (GPCRs) control a plethora of key physiological functions in every cell of an organism. GPCRs are therefore involved in many diseases, since altered ligand or receptor levels and genetic or epigenetic modifications can lead to GPCR dysfunction and hence a pathophysiological phenotype. About one third of currently…

Figure 1 Schematic illustration of a particle stabilised by a steric stabiliser. Note that it has been reported that both the degree of adsorption and the density / thickness of the steric barrier are essential factors to mitigate freezing and drying stresses
Figure 1 Schematic illustration of a particle stabilised by a steric stabiliser. Note that it has been reported that both the degree of adsorption and the density / thickness of the steric barrier are essential factors to mitigate freezing and drying stresses
article

Stabilisation of nanoparticles during freeze drying: The difference to proteins

31 August 2011 | By Jakob Beirowski and Henning Gieseler, University of Erlangen-Nuremberg, Division of Pharmaceutics, Freeze Drying Focus Group

The underlying concept for the stabilisation of proteins during freeze drying is the formation of a glassy matrix in which the macromolecules remain isolated and immobilised. The concept relies on the so-called ‘vitrification hypothesis’ which assumes that the formation of an amorphous phase by lyoprotectants is mandatory to interact with…