35791 Results for: "Capitol Vial Specimen Collection"

Supplier: Omega Bio-Tek

Omega Bio-tek’s E.Z.N.A.® PX Blood RNA Kit is designed for isolation of total RNA from blood samples stored in special preserved reagents and Paxgene tubes

Supplier: Zymo Research

Zymo-Seq™ ATAC library kit provides a simple and streamlined workflow for assay for transposase accessible chromatin with high throughput sequencing (ATAC-Seq) library preparation from mammalian cell and tissue input.

Supplier: Stemcell Technologies

For purification of RNA from cells.

Supplier: Adipogen

Gangliosides are acidic glycosphingolipids that form lipid rafts in the outer leaflet of the cell plasma membrane, especially in neuronal cells in the central nervous system. They participate in cellular proliferation, differentiation, adhesion, signal transduction, cell-to-cell interactions, tumorigenesis and metastasis. The accumulation of gangliosides has been linked to several diseases. Ganglioside GM1 is a major sialoglycolipid of neuronal membranes that modulates calcium homeostasis and which is important for neuronal plasticity and repair mechanisms. It binds to cholera toxin B subunit, resulting in stimulation of adenylyl cyclase in a wide variety of cell types. After cholera toxin binds to membrane associated Monosialoganglioside GM1, the A subunit of cholera toxin is translocated to the cell interior, where it catalyzes the ADP ribosylation of the membrane associated Gs subunit of adenylyl cyclase. In addition, binding of cholera toxin to monosialoganglioside GM1 causes translocation of NF-kappaB and activation of dendritic cells. E. coli heat-labile enterotoxin (LT) is structurally and functionally similar to cholera toxin and binds GM1 as well. GM1 has also been shown to improve Parkinson's disease symptoms and slow it's progression.

Supplier: Adipogen

Potent anticancer compound. Cell permeable potent DNA topoisomerase I (Topo I) complex inhibitor. Potent apoptosis inducer. Binds reversibly to the DNA topoisomerase I complex, inhibiting the reassociation of DNA after cleavage by topoisomerase I and traps the enzyme in a covalent linkage with DNA. The enzyme complex is ubiquinated and destroyed by the 26S proteasome, consequently depleting cellular topoisomerase I. Prevents DNA re-ligation and therefore causes DNA damage which results in apoptosis. Inhibits mitochondrial topoisomerase I (mtTop1). Blocks the cell cycle at low dose and induces apoptosis in a large number of normal and tumor cell lines by cell cycle-dependent and cell cycle-independent processes. Antiprotozoal and antimalarial compound. Inhibitor of HIV replication and of other viruses. Suppresses nitric oxide (NO) biosynthesis. Shown to suppress TNF-alpha-induced expression of the inflammasome and cyclooxygenase 2 (COX-2).

Supplier: Corning

Corning® Synthegel™ 3D matrices are chemically defined peptides that self assemble into nanofibers which crosslink to form tuneable hydrogels. These hydrogels provide a robust and reproducible microenvironment for 3D culture of physiological spheroids and hiPS cells. The Synthegel™ matrix kits provide negligible variability and a more controlled substrate for in vivo-like 3D cell culture. Such a platform is needed for cancer research, stem cell research, and drug screening in a 3D format.

Supplier: Zymo Research

The ZR BAC DNA miniprep kit is for efficient isolation of BAC plasmid DNA and other large plasmids (e.g., PAC) from E. coli cell lysates.

Supplier: Stemcell Technologies

Glial cell line-derived neurotrophic factor (GDNF) is a neurotrophic factor and a member of the tumor growth factor (TGF)-beta superfamily. The GDNF family of growth factors also includes neurturin, persephin, and artemin, which have seven conserved cysteine residues called cysteine-knot (Treanor et al.). GDNF family ligands signal through binding to specific GDNF-family receptor-α (GFRα) co-receptors and activate the RET receptor tyrosine kinase (Durbec et al.). Four different forms of GFRα co-receptors have been characterized (GFRα 1-4) out of which GDNF binds specifically to GFRα1 prior to forming a complex with RET (Airaksinen and Saarma). GDNF is known to promote survival and morphological differentiation of midbrain dopaminergic neurons in both in vivo and in vitro studies and increase their high-affinity dopamine uptake (Granholm et al.; Lin et al.). GDNF has also been shown to have restorative effects on dying dopaminergic neurons in response to degenerative toxins (Aoi et al.). GDNF, together with Human Recombinant BDNF (brain-derived neurotrophic factor; Catalog #78005), BrainPhys™ Neuronal Medium (Catalog #05790), and other supplements, can be used to differentiate human pluripotent stem cell (hPSC)-derived neural progenitor cells into neurons (Bardy et al.). This product is animal component-free.

Supplier: Stemcell Technologies

Macrophage colony-stimulating factor (M-CSF) is a homodimeric glycoprotein growth factor that regulates proliferation and differentiation of myeloid hematopoietic progenitors to mononuclear phagocytic cell lineages, including monocytes, macrophages, and osteoclasts. M-CSF is a crucial factor for the development of tissue-resident macrophages in most tissues (Ginhoux andamp; Jung). It is required for the maturation and activation of monocytes and macrophages, and regulates inflammatory responses in conjunction with other stimuli such as IFN-γ, LPS, and IL-4 (Murray et al.). M-CSF is also required for bone resorption by osteoclasts, and is involved in the development and regulation of placenta, mammary gland, and brain. M-CSF is produced by monocytes, fibroblasts, osteoclasts, stromal cells, endothelial cells, and tumor cells (Chockalingam andamp; Ghosh). M-CSF exerts its biological effects by signaling through a receptor tyrosine kinase (CSF-1R or M-CSF-R) encoded by the c-fms proto-oncogene (Hamilton). CSF-1R shares similar structural features with other growth factor receptors, including the stem cell factor (SCF) receptor, platelet-derived growth factor receptor (PDGF-R), and Flt3/Flk-2 receptor tyrosine kinase. Stimulation of the CSF-1R upon binding to M-CSF activates MAPK, PI3K, and PLCγ signaling pathways (Chockalingam andamp; Ghosh). Human and mouse M-CSF sequences are highly conserved both at nucleotide and amino acid levels (80% homology; DeLamarter et al.).

Supplier: New England Biolabs (NEB)

The Monarch spin columns S1A and tubes are a component of Monarch kits for DNA gel extraction, PCR cleanup, RNA cleanup, and also offered separately for convenience and flexibility.

Supplier: Omega Bio-Tek

The Mag-Bind® Bacterial DNA 96 Kit allows rapid and reliable isolation of high-quality genomic DNA (gDNA) from a wide variety of bacterial species

Supplier: G-Biosciences

G-Biosciences' OmniTemplate™ is specifically designed for the rapid isolation of a DNA template for polymerase chain reaction (PCR) analysis from mammalian tissue samples, blood and cell cultures

Supplier: Electron Microscopy Sciences

Citifluor™ mountant media containing antifadents solutions reduce the photo-bleaching or fading of the fluorescence of dyes used for labeling biological species.

Supplier: Adipogen

The lymphocyte-specific kinase (Lck) is a cytoplasmic tyrosine kinase of the Src family expressed in T cells and natural killer (NK) cells. Genetic evidence in both mice and humans demonstrates that Lck kinase activity is critical for signaling mediated by the T cell receptor (TCR), which leads to normal T cell development and activation. Selective inhibition of Lck is expected to offer a new therapy for the treatment of T-cell-mediated autoimmune and inflammatory disease. AMG-47 is one of two optimized chemical compounds that has been shown to be extremely effective in vivo and in vitro in inhibiting Lck as well as a number of other receptor tyrosine kinases. In an anti-CD3/ IL-2 mouse model system AMG-47 has been shown to be effective in inhibiting the Lck mediated anti-inflammatory activity (ED50 11 mg/kg; 630nM) in vivo. In multiple other in vitro assays, AMG-47 exhibits subnanomolar inhibition against Lck, and low (10nM) inhibition against other hard to inhibit kinases such as KDR and SRC and MAPK alpha (p38alpha). Moreover at slightly higher doses but well under 10µM, AMG-47 effectively inhibits the JNK family of kinases including TYK2 at ~ 1.2µM.

Supplier: Adipogen

AT7519 is a potent inhibitor of several CDK family members. AT7519 showed potent antiproliferative activity (40-940nM) in a panel of human tumor cell lines, and the mechanism of action was shown here to be consistent with the inhibition of CDK1 and CDK2 in solid tumor cell lines. AT7519 caused cell cycle arrest followed by apoptosis in human tumor cells and inhibited tumor growth in human tumor xenograft models. Tumor regression was observed following twice daily dosing of AT7519 in the HCT116 and HT29 colon cancer xenograft models. Also it has been shown that the biological effects are linked to inhibition of CDKs in vivo and that AT7519 induces tumor cell apoptosis in these xenograft models. Moreover, AT7519 has an attractive biological profile and is well tolerated and effective making it a more plausible candidate for clinical development than previously available CDK inhibitors. In in vitro kinase assays AT7519 showed nanomolar levels of activity from 10 to 2400 for cyclins; only one other non-cyclin related kinase was inhibited at levels below 10µM (GSK3beta, 89nM), all others tested had IC(50)'s of greater than 10,000nM.

Supplier: Adipogen

Activation of cells by LPS is mediated by the Toll-like receptor 4 (TLR4). For optimal interaction with LPS, TLR4 requires association with myeloid differentiation protein 2 (MD-2). According to current consensus activation of TLR4 is preceded by the transfer of LPS to membrane-bound (m) or soluble (s) CD14 by LPS-binding protein (LBP). Re-form LPS and lipid A, but not S-form LPS, are capable of inducing TNF-alpha responses also in the absence of CD14. LPS, synthesized by most wild-type (WT) Gram-negative bacteria (S-form LPS), consists of three regions, the O-polysaccharide chain, which is made up of repeating oligosaccharide units, the core oligosaccharide and the lipid A, which harbors the endotoxic activity of the entire molecule. R-form LPS synthesized by the so-called rough (R) mutants of Gram-negative bacteria lacks the O-specific chain. Furthermore, the core-oligosaccharide may be present in different degrees of completion, depending on the class (Ra to Re) to which the mutant belongs. LPS are amphipathic molecules whose hydrophobicity decreases with increasing length of the sugar part. Based upon these differences, S- and R-form LPS show marked differences in the kinetics of their blood clearance and cellular uptake as well as in the ability to induce oxidative burst in human granulocytes and to activate the host complement system.

Supplier: Lucigen

Simple, rapid extraction (no purification) of PCR-ready DNA from challenging FFPE tissue samples

Supplier: Zymo Research

Simple and efficient isolation of DNA from insects, including mosquitoes, bees, lice, ticks, and D

Supplier: Adipogen

Aminonucleoside antibiotic. Protein synthesis inhibitor. Disrupts peptide transfer on ribosomes (acting as an acyl-tRNA analog) causing premature chain termination during translation. Translational inhibitor in prokaryotic and eukaryotic cells in both in vitro and in vivo systems. Inhibits the transport of proteins into the mitochondria in vitro. Reversible inhibitor of dipeptidyl-peptidase II (serine peptidase) and cytosol alanyl aminopeptidase (metallopeptidase). Apoptosis inducer. Inhibits the growth of Gram-positive bacteria, various animal and insect cells. Fungi and Gram-negative bacteria are resistant due to the low permeability to the antibiotic. Antineoplastic agent. Used in cell biology as selective agent in cell culture systems. It allows selection for cells that contain the resistance gene puromycin N-acetyl-transferase (PAC). Puromycin has a fast mode of action, causing rapid cell death at low antibiotic concentrations. Adherent mammalian cells are sensitive to concentrations of 2 to 5 µg/ml, while cells in suspension are sensitive to concentrations as low as 0.5 to 2 µg/ml. Puromycin-resistant stable mammalian cell lines can be generated in less than one week.

Supplier: Adipogen

AV-412 is a potent dual inhibitor of EGFR and ErbB2 tyrosine kinases, including the mutant EGFR(L858R,T790M), which is clinically resistant to the EGFR-specific kinase inhibitors erlotinib and gefitinib. In enzyme assays assay the compound inhibited the EGFR variants and ErbB2 in the nanomolar range with over 100-fold selectivity compared with other kinases, apart from ABL and FLT1, which were both moderately sensitive to the compound. In cells, AV-412 inhibited autophosphorylation of EGFR and ErbB2 with IC(50) of 43 and 282 nM, respectively. It also inhibited epidermal growth factor (EGF)-dependent cell proliferation with an IC(50) of 100nM. Moreover, AV-412 abrogated EGFR signaling in the gefitinib-resistant H1975 cell line, which harbors a double mutation of L858R and T790M in EGFR. In animal studies using cancer xenograft models, AV-412 (30mg/kg) demonstrated complete inhibition of tumor growth of the A431 and BT-474 cell lines, which overexpress EGFR and ErbB2, respectively.

Supplier: Adipogen

Activation of cells by LPS is mediated by the Toll-like receptor 4 (TLR4). For optimal interaction with LPS, TLR4 requires association with myeloid differentiation protein 2 (MD-2). According to current consensus activation of TLR4 is preceded by the transfer of LPS to membrane-bound (m) or soluble (s) CD14 by LPS-binding protein (LBP). Re-form LPS and lipid A, but not S-form LPS, are capable of inducing TNF-alpha responses also in the absence of CD14. LPS, synthesized by most wild-type (WT) Gram-negative bacteria (S-form LPS), consists of three regions, the O-polysaccharide chain, which is made up of repeating oligosaccharide units, the core oligosaccharide and the lipid A, which harbors the endotoxic activity of the entire molecule. R-form LPS synthesized by the so-called rough (R) mutants of Gram-negative bacteria lacks the O-specific chain. Furthermore, the core-oligosaccharide may be present in different degrees of completion, depending on the class (Ra to Re) to which the mutant belongs. LPS are amphipathic molecules whose hydrophobicity decreases with increasing length of the sugar part. Based upon these differences, S- and R-form LPS show marked differences in the kinetics of their blood clearance and cellular uptake as well as in the ability to induce oxidative burst in human granulocytes and to activate the host complement system.

Supplier: Zymo Research

DNA/RNA Shield™ ensures nucleic acid stability during sample storage/transport at ambient temperatures.

Supplier: Stemcell Technologies

Stem cell factor (SCF) is an early-acting cytokine that plays a pivotal role in the regulation of embryonic and adult hematopoiesis. SCF promotes cell survival, proliferation, differentiation, adhesion, and functional activation of cells at multiple levels of the hematopoietic hierarchy. Together with other cytokines such as thrombopoietin and Flt3/Flk-2 Ligand, SCF is commonly used to promote expansion of primitive hematopoietic stem cells and multi-potent progenitor cells in culture (Huang et al.; Kent et al.). In synergy with various growth factors, including IL-2, IL-3, IL-6, IL-7, G-CSF, and erythropoietin, SCF increases proliferation and differentiation of myeloid and erythroid progenitor cells and a subset of lymphoid progenitor cells (Broudy). In the mouse, SCF is essential during fetal gonadal development (Mauduit). It is produced by stromal cells in the fetal liver, bone marrow, and thymus, in the central nervous system, in keratinocytes, and in the gut mucosa, and can function as a chemotactic and chemokinetic factor. SCF exists in two biologically active splice forms: a soluble and a transmembrane isoform. Upon binding to its receptor (c-kit tyrosine kinase receptor; CD117), it activates PI3K, JAK/STAT, and MAPK pathways. SCF and signaling from c-kit has also been reported to play an important role in pigmentation, fertility, vasculogenesis, motility of the gut via c-kit-positive interstitial cells of Cajal, and in the migration of neuronal stem and progenitor cells to sites of injury in the brain (Lennartsson and Ronnstrand).

Supplier: Thermo Fisher Scientific

Get premium performance and flexibility with the Orion™ Versa Star Pro™ Meter with pH and Conductivity Modules for simultaneous pH, conductivity, and temperature analysis.

Supplier: Omega Bio-Tek

Isolates total RNA from blood samples stored in special preservation reagents and PAXgene tubes using spin columns.

Supplier: Cytiva

illustra™ MicroSpin™ S-400 HR columns designed for rapid purification of PCR products (>200 bp) from unincorporated primers (<32-mers) and nucleotides using spin-column chromatography.

Supplier: CREATIVE BIOARRAY MS

CELL_PRIMARY_KIDNEY_RAT_PROXIMAL_1_VIAL

Supplier: Cytiva

For rapid buffer exchange/desalting of PCR products and other DNAs in a volume of 10 to 100 μl using spin column chromatography.

Supplier: Promega Corporation

The Wizard SV 96 PCR Clean-Up System is designed for high-throughput purification of 100 bp to 10 kb PCR products from excess nucleotides, primers, and primer dimers.

Supplier: Stemcell Technologies

Interleukin-8 (IL-8) is a member of the CXC subfamily of chemokines and is produced by leukocytic cells (monocytes, T cells, neutrophils, and natural killer cells) and non-leukocytic somatic cells (endothelial cells, fibroblasts, and epithelial cells), with the most prominent source being monocytes and macrophages. Its production is induced by inflammatory stimuli, such as IL-1. IL-8, also known as CXCL8, activates neutrophils inducing chemotaxis, exocytosis, and the respiratory burst (Baggiolini and Clark-Lewis; Mukaida). IL-8 is considered one of the most potent neutrophil chemoattractants in inflammation and binds to two different chemokine receptors on leukocytes: the G protein-coupled receptors CXCR1 and CXCR2 (Hoffmann et al.; de Oliveira et al.). IL-8 has angiogenic effects on human intestinal microvascular endothelial cells in vitro that are mediated by CXCR2 (Heidemann et al.). IL-8 is reported to promote breast cancer progression by increasing cell invasion, angiogenesis, and metastasis and has been reported to be involved in regulating breast cancer stem-like cells (Singh et al.). IL-8 also has proangiogenic properties in inflammatory diseases of the conjunctiva, cornea, iris, retina, and orbit (Ghasemi et al.). It was also shown that a major T cell effector function in human newborns is IL-8 production, which has the potential to activate antimicrobial neutrophils and gamma/delta T cells (Gibbons et al.). A variety of human pathogens, such as HIV and Mycobacterium tuberculosis, have been shown to induce IL-8 production by monocytes and macrophages (Friedland et al.; Meddows-Taylor et al.).