35790 Results for: "Capitol Vial Specimen Collection"

Supplier: Stemcell Technologies

Interleukin 17A (IL-17A) is the founding member of the family of cytokines that includes IL-17B through IL-17F. It is a potent pro-inflammatory cytokine that plays a key role in defense against pathogens. IL-17A and IL-17F signal as homodimers or heterodimers through the same receptor, and activate NF-κB, MAPK, and C/EBP pathways (Gaffen). IL-17A is produced by Th17 cells, CD8+ T cells, γ/δ T cells, natural killer (NK) T cells, B cells, innate lymphoid cells, and mesenchymal stromal cells (MSCs) (Cua and Tato; Gaffen; Mojsilović et al.). IL-17A mediates protection against extracellular pathogens, and together with IL-22 stimulates production of antimicrobial peptides. It induces granulopoiesis factors and neutrophil-specific chemokines. Together with tumor necrosis factor alpha (TNF-α), IL-17A induces a sustained neutrophil recruitment during inflammation (Cua and Tato). IL-17A receptor is expressed at particularly high levels on stromal cells, including MSCs. IL-17A increases the frequency and the average size of fibroblast colony-forming units (CFU-F), as well as the proliferation of marrow-derived MSCs. It enhances osteogenic differentiation, and inhibits adipocyte differentiation and chondrogenesis (Mojsilović et al.).

Supplier: Stemcell Technologies

Use angiopoietin-like protein 2 (ANGPTL2) to regulate tissue remodeling through integrin α5β signaling and activation of p38 mitogen-activated protein kinases (MAPK) (Odagiri et al.; Tabata et al.). Highly expressed in the heart, small intestine, and stomach, ANGPTL2 is a glycosylated secretory protein that contains a coiled domain and a fibrinogen-like domain (Kim et al.). Studies have shown that the coiled-coil domain of ANGPTL2 functions as a growth factor, enhancing the survival of hematopoietic stem cells (HSCs) ex vivo (Broxmeyer et al.). ANGPTL2 is also known to play a role in obesity and metabolic diseases, promoting local inflammation in adipose tissue and systemic insulin resistance in mice models (Tabata et al.). By activating an inflammatory cascade in endothelial cells and increasing macrophage infiltration, ANGPTL2 accelerates vascular inflammation which may lead to endothelial dysfunction and atherosclerosis progression (Horio et al.). This protein product contains a His-residue tag at the amino end of the polypeptide chain. For consistency and reproducibility across your applications, sclerostin from STEMCELL comes lyophilized with ≥92% purity, and endotoxin levels are verified to be ≤1.0 EU/μg protein.

Supplier: Stemcell Technologies

Dickkopf-related protein 1 (DKK-1) is a member of the Dickkopf family and is a secreted protein that inhibits the canonical WNT pathway by competitive binding to low-density lipoprotein receptors (LRP)-5 and 6 with high affinity, thereby decreasing β-catenin protein stability (Niehrs). DKK-1 regulates embryonic development and contains two conserved cysteine-rich domains separated by a linker region and an N-terminal signal peptide (Krupnik et al.; Lieven et al.). A family of human DKK-related genes composed of DKK-1, DKK-2, DKK-3, and DKK-4 have been characterized together with a unique DKK-3 related protein termed Soggy (Krupnik et al.). DKK-1 has been shown to support the generation of myeloid-derived suppressor cells (MDSCs) and thus is a negative regulator of antitumor immune responses (D’Amico et al.). DKK-1 from thrombocytes is an important regulator of leukocyte infiltration and induces Th2 cell polarization and potentiates Th2 cell cytokine expression (Chae et al.). DKK-1 has also been shown to drive cardiac and retinal differentiation from induced pluripotent stem (iPS) cells (Lian et al.). Protein contains a His-residue tag at the carboxyl end of the polypeptide chain.

Supplier: Stemcell Technologies

Interferon alpha 1 (IFNA1) belongs to the type 1 interferon family of cytokines, which bind interferon alpha receptors (IFNAR; composed of IFNAR1 and IFNAR2 subunits) that are involved in interferon-induced JAK-STAT signaling (Shemesh et al.). Interferons have inhibitory effects on viral replication and pathogenesis, and studies have found that IFN alpha can prevent the spread of herpes simplex virus (HSV) (Mikloska and Cunningham), and human immunodeficiency virus (HIV) (George and Mattapallil). Pegylated forms of IFN alpha are currently approved for the treatment of chronic hepatitis B (Woo et al.). IFN alpha also displays anti-tumor effects by regulating cell growth and proliferation, and it is used in the treatment of different cancers (Tagliaferri et al.). Interferons display alpha-helical structures with four helices forming an antiparallel alpha-helix bundle (Walter). This protein contains a His-residue tag at the carboxyl end of the polypeptide chain. For consistency and reproducibility across your applications, interferon alpha 1 from STEMCELL comes lyophilized with ≥90% purity, specific activity EC50 ≤40 to 200 pg/ml, and LAL analysis verification ensuring endotoxin levels are ≤1.0 EU/μg protein.

Supplier: Stemcell Technologies

Use autotaxin (ENPP2) to catalyze the production of lysophosphatidic acid (LPA), a potent mitogen that can evoke growth factor-like responses (Moolenaar and Corven), from lysophospholipids in extracellular fluids. Autotaxin is a secreted glycoprotein that belongs to the ectonucleotide pyrophosphatase/phosphodiesterase (ENPP) family, containing two N-terminal somatomedin B (SMB)-like domains, a central phosphodiesterase (PDE) domain with an active catalytic site, and a C-terminal nuclease-like (NUC) domain (Nishimasu et al.). Dysregulation of autotaxin and LPA receptors is implicated in cancer (Tigyi et al.), fibrosis (Ninou et al.), neurological disorders (Roy et al.), and other inflammation-associated conditions. Both Autotaxin and LPA are overexpressed in many cancers and can promote cell proliferation, migration, and resistance to apoptotic death (Tigyi et al.). Autotaxin was also found to catalyze the production of cyclic phosphatidic acid (CPA), an analog of LPA, which has anti-mitogenic and inhibitory effects on tumor cell invasion and metastasis (Fujiwara). This protein contains a His-residue tag at the amino end of the polypeptide chain. For consistency and reproducibility across your applications, Autotaxin from STEMCELL comes lyophilized with ≥ 85% purity, and endotoxin levels are verified to be ≤1.0 EU/μg protein.

Supplier: R&D Systems

RECOM AICL/CLEC-2B FC CHIMERA >90% 50UG

Supplier: Justrite

DIP TANK SELF CLOSE COVER STEEL RED 8GAL

Supplier: Nidec Shimpo America

FG-7000 Series Data logging, Digital Force Gauge, Loaded with functionality to simplify compression and tension testing needs. Menu programming for easy selection and set-up of the instrument to desired requirements with three unique modes of operation.

Supplier: Stemcell Technologies

Enhanced green fluorescent protein (eGFP)-tagged Cas9 nuclease for the generation of double-strand breaks in CRISPR-Cas9 genome editing.

Supplier: Stemcell Technologies

The platelet-derived growth factor (PDGF) family has five heparin-binding members that assemble into four homodimers (PDGF-AA, PDGF-BB, PDGF-CC, and PDGF-DD) and one heterodimer (PDGF-AB; Fretto et al.; Li and Eriksson). PDGF signals through the receptor tyrosine kinases PDGFRα and PDGFRβ. It has been shown that PDGF-induced migration involves signaling pathways involving MEK/ERK, EGFR, Src, and PI3K/AKT (Kim et al.). PDGF is a potent mitogen for cells of mesenchymal origin, such as fibroblasts, glial cells, and vascular smooth muscle cells. PDGF has been implicated in pathogenesis of atherosclerosis, glomerulonephritis, cancer, and in the contraction of vascular smooth muscle cells of rat aortic tissues (Fretto et al.; Sachinidis et al.). PDGF-DD promotes growth and survival of renal artery smooth muscle cells and lens epithelial cells, and can act as a macrophage chemoattractant (Changsirikulchai et al.; Lokker et al.; Ray et al.; Uutela et al.).

Supplier: Stemcell Technologies

A member of the apolipoprotein family, Apolipoprotein A-I (apo A-I) is a major glycoprotein component of high density lipoprotein (HDL) particles (Frank and Marcel) which facilitate the reverse transport of cholesterol from peripheral tissues to the liver. Apo A-I binds to the scavenger receptor SR-A1, allowing HDL particles to interact with cells in peripheral tissues (Neyen et al.), and is involved in the esterification of cholesterol, acting as a cofactor for lecithin cholesterol acyltransferase (LCAT; Frohlich). Apo A-I has been shown to bind to the scavenger receptor SR-B1 (Williams et al.) and the beta chain of ATP synthase (Martinez et al.) on hepatocytes, highlighting its importance in HDL endocytosis. Mutations in the APOA1 encoding gene may result in dysregulated HDL levels, leading to an increased risk of amyloidosis and ischemic heart disease (Haase et al.; Obici et al.). This protein product contains a His-residue tag at the amino end of the polypeptide chain. This protein product contains a His-residue tag at the amino end of the polypeptide chain. For consistency and reproducibility across your applications, sclerostin from STEMCELL comes lyophilized with ≥ 92% purity.

Supplier: Stemcell Technologies

Apolipoprotein H (apo H) has been shown to promote the coagulation of blood platelets by inhibiting thrombomodulin complex and inactivating protein C (Keeling et al.), but can also act as an anticoagulant by binding thrombin and inhibiting its procoagulant effects (Pozzi et al.). Belonging to the lipid-binding apolipoprotein family, within the lipocalin superfamily, apo H is a protein constituent of plasma, with a high affinity for negatively charged phospholipids. The structure of apo H reveals four N-terminal complement control protein (CCP) modules, also known as 'sushi' domains, and a distinct fifth C-terminal domain with four antiparallel beta sheets, two alpha-helices, and an extended loop (Schwarzenbacher et al.). Apo H is the main antigen implicated in antiphospholipid syndrome (APS), an autoimmune condition involving pregnancy complications and vascular thrombosis (Brusch). Studies have also reported that Apo H is involved in the progression of atherosclerosis (Harats and George). This protein contains a His-residue tag at the carboxyl end of the polypeptide chain. For consistency and reproducibility across your applications, apolipoprotein H from STEMCELL comes lyophilized with ≥93% purity, and is verified by LAL analysis to ensure endotoxin levels are ≤1.0 EU/μg protein.

Supplier: ULINE MS

JUG F-STYLE BULK PK 63/445 2-1/2GAL CS90

Supplier: Adipogen

Verapamil hydrochloride is an alpha-adrenergic receptor (alpha-AR) antagonist and calcium channel protein inhibitor that blocks the L-type Ca2+ channels in smooth and cardiac muscle cells. Verapamil is an antiarrhythmic agent and vasodilator known to reduce the renal clearance of digoxin and induce apoptosis in primary and metastatic colon adenocarcinoma human cell lines in vitro. It has been observed that verapamil can induce currents by itself, presumably by acting on the potassium and chloride leakage. Verapamil has also been used as an inhibitor of drug efflux pump proteins such as Mdr (P-glycoprotein). Verapamil is a substrate of CYP3A4 and CYP2C6. It is also used in fluorescent cell sorting for DNA content, as it blocks efflux of a variety of DNA-binding fluorophores such as Hoechst 33342. Recent research has shown verapamil to be an effective treatment for diabetes in animal models. Verapamil helps treat diabetes by limiting TXNIP expression.

Supplier: ROEMER INDUSTRIES, INC.

PharmaRoam3 is a medical-grade, countertop refrigerator or freezer that has optional accessories such as battery power and data management. Designed to transport vaccines and pharmaceuticals, units function as refrigerators or freezers down to 1 °C (optional −20 °C with refrigerant change) and run on a battery while on the move. These units can be secured with a padlock, have a handle on the top and can be stacked with stacking corners. Excellent for disaster preparedness to store temperature sensitive products when the electrical power supply is not reliable or dependable.

Supplier: Adipogen

Non-phorbol type tumor promoter. Reversible, potent and selective serine threonine protein phosphatase inhibitor. PP2A (IC50=0.2-1nM), PP1 (IC50=3-15nM), PP2B (IC50= 1µM). Does not inhibit PP2C. Stimulates intracellular protein phosphorylation. Useful tool for studying cellular processes that are regulated by phosphorylation. Does not affect activity of acid phosphatase, alkaline phosphatase and tyrosine phosphatase. Mimics the effects of insulin. Activates atypical protein kinase C (zeta/lambda) in 3T3/L1 adipocytes. Enhances transmitter release at neuromuscular junctions. Apoptosis inhibitor. Induces apoptosis in human breast carcinoma cells (MB-231 and MCF-7) and in myeloid cells. Neurotoxic. Used to study various cellular processes including cell cycle, apoptosis, nitric oxide metabolism and calcium signaling. Stimulates cell motility, loss of stabilization of focal adhesions and a consequent loss of cytoskeletal organization.

Supplier: Adipogen

Potent cell permeable and selective inhibitor of phosphatidyl-inositol 3-kinase (PI3K). Blocks class I, class II and class III PI3Ks, including some downstream targets. Blocks class I PI3K persistently and class III PI3K transiently. Induces autophagy under nutrient-rich conditions and inhibits starvation-induced autophagy due to differential effects on class I versus class III PI3 kinase. Shows some limited Vps34 preference in vitro compared to PtdIns3Kgamma. However, it is typically employed in cellular studies at a concentration of 10 mM, which can inhibit all PtdIns3Ks. Can target other kinases and affect other cellular processes, such as glycogen metabolism, lysosomal acidification, endocytosis and mitochondrial permeability transition. Anticancer compound. Neuroprotective. PKA-activation dependent lipolytic agent. Enhances ATGL-dependent hydrolysis of triacylglycerols.

Supplier: Adipogen

Rhodamine 6G is a highly fluorescent hydrophilic pH-sensitive dye. It is often used as a tracer dye within water to determine the rate and direction of flow and transport. Rhodamine dyes are used extensively in biotechnology applications such as fluorescence microscopy, flow cytometry, fluorescence correlation spectroscopy and ELISA. The dye has a remarkably high photostability and high fluorescence quantum yield. Used as a laser dye and potential mitochondrial probe. The lasing range of the dye is 555 to 585 nm with a maximum at 566 nm. Useful in Pgp efflux assays and has been used to characterize kinetics of MRP1-mediated efflux. Spectral data: lambdaex 528 nm| lambdaem 551 nm (in MeOH).

Supplier: Adipogen

Antibiotic. Potent and highly selective Ca2+ ionophore. Commonly used to modify intracellular calcium levels to study calcium transport across biological membranes and to calibrate fluorescent Ca2+ indicators. Ionomycin also transports Pb2+ and some other divalent cations, as well as several lanthanide series trivalent cations at efficiencies that are greater than or equal to those for Ca2+. Apoptosis inducer. Induces apoptotic neuronal degeneration in embryonic cortical neurons and cell cycle arrest at G1 phase and induces central demyelination. Used to stimulate the intracellular production of the cytokines, interferon, perforin, IL-2 and IL-4 usually in conjunction with PMA. ADAM10 agonist. Potent inducer of shedding CXCL16. TREK-1 channels inhibitor. PPARgamma ligand with a unique binding mode. Shows effective glucose-lowering activity in a mouse model of diabetes.

Supplier: Adipogen

Highly sensitive and selective fluorogenic H2S probe. The aromatic azide moiety of AzMC is selectively reduced in the presence of H2S, producing the fluorescent 7-amino-4-methylcoumarin (AMC) with a concomitant increase in fluorescence with lambdaex = 365 nm and lambdaem = 450 nm. Photoaffinity labeling probe for the substrate binding site of human sulfotransferase 1A1 (SULT1A1). Probe to monitor the enzymatic production of H2S in vitro and to visualize H2S in living cells. Tool for monitoring the activity of pyridoxal-5'-phosphate (PLP)-dependent enzymes (e.g. cystathionine beta-synthase (CBS), cystathionine gamma-lyase (CGL) and tryptophan synthase (TS)). Tool to identify novel cystathionine beta-synthase (CBS) inhibitors and activators. Suitable for high-throughput screening. Caution: Use of this product with DTT, TCEP and/or biological thiols at concentrations of 25 mM should be avoided for maximum efficiency.

Supplier: Adipogen

N-Hexadecanoyl-L-homoserine lactone is a small diffusible signaling molecule and is a member of N-acyl-homoserine lactone family. N-acylhomoserine lactones (AHL) are involved in quorum sensing, controlling gene expression, and cellular metabolism. C16-HSL is a lipophilic, long acyl side-chain bearing AHL, produced by the LuxI AHL synthase homolog SinI involved in quorum-sensing signaling in S. meliloti, a nitrogen-fixing bacterial symbiont of certain legumes. C16-HSL is the most abundant AHL produced by the proteobacterium R. capsulatus and activates genetic exchange between R. capsulatus cells. It tends to localize in relatively lipophilic cellular environments of bacteria and cannot diffuse freely through the cell membrane. The long-chain N-acylhomoserine lactones may be exported from cells by efflux pumps or may be transported between communicating cells by extracellular outer membrane vesicles.

Supplier: C&G Containers

JUG NM 38-400WHT SLD CAP HDPE NAT 1GAL

Supplier: Sheldon Manufacturing

BACTRON chambers are total anaerobic process workstations. Samples can be prepared, cultured, and inspected in the oxygen-free chamber and standard incubator. Unlike anaerobic jars and bags, which unavoidably expose samples to oxygen, BACTRON units provide complete anaerobic environments for all your applications.

Supplier: Stemcell Technologies

Interleukin 6 receptor (IL-6R) alpha is a type I transmembrane glycoprotein that forms a complex with type I transmembrane signal transducer protein gp130 (CD130) and mediates the biological activities of IL-6. IL-6 binds to the membrane-bound non-signaling IL-6R alpha (mIL-6R), and the complex binds to two molecules of gp130 and leads to ‘classical’ IL-6-signal transduction, which includes activation of JAK/STAT, ERK, and PI3K signal transduction pathways (Scheller et al.). In contrast, a soluble form of IL-6R alpha (sIL-6R), which comprises the extracellular portion of the receptor, binds to the secreted IL-6 to form a complex that promotes bioavailability of IL-6. The complex of IL-6 and sIL-6R can bind to gp130 on cells that do not express the IL-6R and are unresponsive to IL-6. This process is known as trans-signaling (Hunter and Jones; Rose-John S). sIL-6R regulates both local and systemic IL-6-mediated events. Elevated levels of sIL-6R have been documented in several disease conditions such as rheumatoid arthritis, myeloma, and Crohn’s disease (Jones et al.; Mihara et al.).

Supplier: Stemcell Technologies

Interferon-gamma (IFN-γ), also known as type II interferon, is produced by T and NK cells, and in smaller amounts by dendritic cells and macrophages. IFN-γ is controlled by cytokines such as IL-12 and IL-18 secreted in response to infection (Schroder et al.). IFN-γ binds to a receptor complex and initiates signal transduction via the JAK/STAT pathway; this culminates in the transcription and activation of many genes that control a diverse array of immunological functions (de Weerd and Nguyen; Krause et al.). IFN-γ stimulates the antimicrobial and anti-tumor activity of macrophages, NK cells, and neutrophils (Billiau and Matthys) by promoting the activation of microbial effector functions such as production of reactive oxygen species, NO intermediates, and complement (Schroder et al.). IFN-γ enhances MHC class I and II expression in dendritic cells and mononuclear phagocytes, as well as the production of IL-12 by dendritic cells. In B cells, IFN-γ stimulates survival and growth in both mouse and human cells, and redirects B cells from proliferation towards differentiation. IFN-γ favors the development of Th1 vs Th2 cells and stimulates monocyte differentiation and function (Schroder et al.). This product is animal component-free.

Supplier: Stemcell Technologies

Fibroblast growth factor acidic (FGF-acidic), also known as FGF-1, is a potent activator of DNA synthesis, cell proliferation, and chemotaxis and is known to play numerous roles in development, regeneration, and angiogenesis (Galzie et al.; Jaye et al.; Presta et al.). FGF-acidic is produced by multiple cell types and is capable of activating all cells of mesodermal origin and many cells of neuroectodermal, ectodermal, and endodermal origin. It is found in large quantities in the brain, but is also expressed in hepatocytes, vascular smooth muscle cells, neurons of the central nervous system, skeletal muscle cells, fibroblasts, keratinocytes, endothelial cells, intestinal columnar epithelial cells, and pituitary basophils and acidophils. FGF-acidic is secreted as a disulfide-linked homodimer and is stored in complex with heparan sulfate, a requirement for its interaction with FGF receptors (Guerrini et al.; Mohammadi et al.). Internalized FGF-acidic signals via protein kinase C and promotes cell survival by inhibiting p53 and proapoptotic signaling (Bouleau et al.). This product is animal component-free.

Supplier: Thermo Fisher Scientific

Accommodate a range of application and storage requirements. Thermo Scientific™ Matrix™ SepraSeal and DuraSeal tube sealing solutions complement the innovative line of Thermo Scientific Matrix 2D and non-2D coded storage tubes.

Supplier: Adipogen

Merck 5, also known as Pyridone 6, is a potent and reversible ATP-competitive inhibitor of the JAK kinases (JAK1, JAK2, JAK3, and Tyk2) with IC(50) values in the low anomolar range. At higher values (IC(50) 100nM) Merck 5 also can inhibit ERK kinase family and appear to block IL-2 and IL-4 dependent proliferation of CTLL cells and inhibits the phosphorylation of STAT5. In research comparing Merck 5 (Pyridone 6) to the Jak inhibitor AG490, Merck 5 demonstrated much lower effective drug concentrations and faster kinetics and appear to be a more sensitive and specific inhibitor of JAK-STAT3 activity compared with AG490 and potently inhibited the growth of primary myeloma cells and myeloma-derived cell lines grown on bone marrow-derived stromal cells .

Supplier: Adipogen

The 2,3-diaminonaphthalene (DAN) assay is routinely used in the determination of nitrite/nitrate levels in biological fluids and cellular extracts as one indicator of nitric oxide activity. The assay, as reported by Misko, uses the reaction of DAN with NO2- under acidic conditions to form a detectable fluorescent naphthotriazole. The reaction proceeds at acidic pH at room temperature. Fluorescence is monitored following the addition of NaOH, which raises pH, resulting in lower background and increased sensitivity (Ex/Em: ~365/415nm). However, detection at 450nm is recommended to avoid fluorescent blanks and increase sensitivity. The fluorescent background of DAN is low for maximum sensitivity. Detection limits of NO achieved by this method are in the high-pM range. 2,3-Diaminonaphtaline (DAN) is used as a derivatisation-reagent for the determination of selenium at low detection limits. The 4,5-benzopiaselenol-complex can be quantified by photometry or GC.

Supplier: G-Biosciences

Dual inhibitor of the Rho GTPases Rac (IC50=103 nM) and Cdc42 (IC50=78 nM).1 It inhibits breast cancer cell migration, viability, and mammosphere formation. MBQ-167 induced polarity loss resulting in 95% cell rounding and detachment from the substratum in metastatic MDA-MB-231 cells and was active in GFP-HER2-BM, MDA-MB-468, and Hs578t breast cancer cells as well as Mia-PaCa-2 pancreatic cancer cells, SKOV3 ovarian cancer cells, AGS and NCI-N87 gastric cancer cells, and SH-SY5Y neuroblastoma cells. Non-cancerous mammary epithelial MCF10A and epithelial breast cancer MCF-7 cells were resistant to MBQ-167. MBQ-167 inhibited viability and induced apoptosis in gefitinib and lapatinib resistant SKBR3 breast cancer cells.2 MBQ-167 inhibited triple negative breast cancer tumor growth and lung metastasis in a mouse model.3 Active in vivo.