2421 Results for: "STEMCELL Technologies"

Supplier: STEMCELL Technologies

cGMP, stabilized feeder-free maintenance medium for human ES and iPS cells.

Supplier: STEMCELL Technologies

Amine-labelling fluorescent dye for live/dead staining of mammalian cells - 100 tests.

Supplier: STEMCELL Technologies

R-Spondin-1 (RSPO1) is the prototype member of the R-Spondin (RSPO) protein subfamily of a superfamily of thrombospondin type 1 repeat (TSR-1)-containing proteins (Chen et al.; Kamata et al.; Kazanskaya et al.; Kim et al.). Although unable to initialize signaling, RSPO family members are potent enhancers of WNT signaling (Cruciat and Niehrs; de Lau et al.; Kamata et al.; Kazanskaya et al.). They are characterized by a TSR-1 domain, a carboxy-terminal region with positively charged amino acids, and two N-terminal furin-like cysteine-rich repeats (Glinka et al.; Kazanskaya et al.). R­-Spondin-1 activates β­-catenin signaling via the WNT signaling cascade and by indirectly increasing low-density lipoprotein receptor-related protein 6 (LRP6) on the cell surface. It does this by binding leucine-rich repeat-containing G-protein-coupled receptor 5 (LGR5), and competing with WNT antagonist DKK­1 for binding to the WNT co­receptors, Kremen and LRP­6, which reduces DKK­1-­mediated internalization of LRP6 (Binnerts et al.). RSPO1 is involved in a wide range of pleiotropic roles during embryogenesis, it is required for the specification of hematopoietic stem cells, and it has been shown to be important in the growth, survival, and migration of ovarian cancer cells (Cruciat and Niehrs; de Lau et al.; Genthe and Clements; Liu et al.).

Supplier: STEMCELL Technologies

Bone morphogenetic protein 4 (BMP-4) is a member of the highly conserved transforming growth factor β (TGF-β) superfamily. Mature BMP-4 is a disulfide-linked homodimeric protein consisting of two 116-amino-acid residue subunits, and is generated by the proteolytic removal of the signal peptide and propeptides (Xiao et al.). BMP-4 binds to type I and type II receptors on cells. This binding results in the phosphorylation of receptor 1, which in turn results in the phosphorylation of Smad proteins, which then go on to act as transcription factors (Zhang et al.). BMPs have been shown to be key regulators of embryogenesis and are known to play a role in the growth and differentiation of various cell types, including embryonic stem (ES) cells, induced pluripotent stem (iPS) cells, mesenchymal cells, epithelial cells, hematopoietic cells, and neuronal cells (Chadwick et al.; Graham et al.; Jones et al.; Lengerke et al.; Zhang et al.).

Supplier: STEMCELL Technologies

Receptor activator of nuclear factor kappa-B ligand (RANKL) is a member of the tumor necrosis factor (TNF) superfamily (Anderson et al.). Cytokines in the TNF superfamily are involved in a variety of long-term cellular activities such as differentiation, proliferation, and cell death (MacEwan). RANKL is a type II homotrimeric transmembrane protein expressed in both a membrane-bound and secreted form (Ikeda et al.). RANKL binds to the receptor activator of nuclear factor kappa-B (RANK). Upon binding to its receptor, RANKL activates the AKT signaling pathway (Moon et al.). Osteoprotegerin (OPG) may also bind RANKL, and this binding competes with RANKL-RANK binding (Lacey et al.). RANKL is involved in osteoclastogenesis (Lacey et al.; Yasuda et al.) and T cell activation (Wong et al.).

Supplier: STEMCELL Technologies

The principal physiological regulator of erythropoiesis, Erythropoietin (EPO) is a glycoprotein growth factor that is produced primarily in the kidney in response to hypoxia or anemia. EPO promotes erythropoiesis by binding to a homodimeric cell surface receptor that activates JAK2/STAT5, PI3K/AKT, and MAPK pathways, and stimulates the proliferation and differentiation of erythroid progenitor cells (Jelkmann. Transfus Med Hemother, 2013; Kuhrt and Wojchowski. Blood, 2015).

Supplier: STEMCELL Technologies

Mouse monoclonal IgG1 antibody against human, rhesus, cynomolgus CD2, APC-conjugated.

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-knots (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); 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 increases 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), BrainPhys™ Neuronal Medium, and other supplements, can be used to differentiate human pluripotent stem cell (hPSC)-derived neural progenitor cells into neurons (Bardy et al.).

Supplier: STEMCELL Technologies

Mouse monoclonal IgG2b antibody against human, rhesus, cynomolgus CD32, FITC-conjugated.

Supplier: STEMCELL Technologies

Mouse monoclonal IgG1 antibody against human, rhesus, cynomolgus CD2, FITC-conjugated.

Supplier: STEMCELL Technologies

Brain-derived neurotrophic factor (BDNF), like nerve growth factor (NGF), neurotrophin-3 (NT-3), and neurotrophin-4 (NT-4), is a member of the NGF family of neurotrophins, which are required for the differentiation and survival of specific neuronal subpopulations in both the central and the peripheral nervous systems (Minichiello and Klein; Minichiello et al.). BDNF binds with high affinity to the tropomyosin receptor kinase B (TrkB), and activates AKT and ERK pathways (Mattson et al.). It is expressed in the hippocampus, cortex, and synapses of the basal forebrain. BDNF acts as a survival factor for human embryonic stem cells when plated on either feeder cells or Corning® Matrigel® (Pyle et al.). BDNF regulates synaptic transmission and plasticity at adult synapses in the central nervous system, and contributes to adaptive neuronal responses including long-term potentiation, long-term depression, certain forms of short-term synaptic plasticity, and homeostatic regulation of neuronal excitability (Reichardt). It also has a role in neurogenesis by promoting survival and growth of dorsal root ganglion cells, and hippocampal and cortical neurons (Binder and Scharfman). BDNF, together with glial cell line-derived neurotrophic factor (GDNF) and other supplements, is commonly used to differentiate human pluripotent stem cell (hPSC)-derived neural progenitor cells into neurons (Brafman).

Supplier: STEMCELL Technologies

Rat (WI) monoclonal IgG2b antibody against mouse TER119.

Supplier: STEMCELL Technologies

Culture medium kit for initiation, growth, and differentiation of human liver organoids.

Supplier: STEMCELL Technologies

SARS-CoV-2 Recombinant Spike Protein, aa16-685 is expressed in HEK293 cells and is one of four structural proteins encoded by the SARS-CoV-2 genome. The Spike Protein plays a key role in attachment to host cells, allowing invasion through clathrin-mediated endocytosis. The Spike Protein can be cleaved by host cell proteases after aa685 to yield the N-terminal S1 subunit and C-terminal S2 region. The S1 subunit is responsible for interacting with the host cell receptor (angiotensin-converting enzyme II) through a receptor-binding domain that is highly conserved with SARS-CoV. The S1 subunit has two conformations: a ‘down’ conformation in which the receptor is inaccessible, and an ‘up’ conformation in which the receptor is accessible. These conformational changes are key for monoclonal antibody drugs and vaccine development. SARS-CoV-2 Recombinant Spike Protein contains a polyhistidine tag at the amino terminus; it also contains a FLAG tag at the carboxy terminus.

Supplier: STEMCELL Technologies

Rat monoclonal IgG2b, antibody against mouse MHC Class II (I-A/I-E), unconjugated.

Supplier: STEMCELL Technologies

Mouse monoclonal antibody against human, rhesus, cynomolgus CD9, unconjugated.

Supplier: STEMCELL Technologies

Mouse monoclonal IgG1, antibody against human, chimpanzee CD4, APC-conjugated.

Supplier: STEMCELL Technologies

Serum-free and conditioned medium-free cell culture medium for establishment and maintenance of human intestinal organoids.

Supplier: STEMCELL Technologies

For the detection of human anti-SARS-CoV-2 nucleoprotein IgG antibodies.

Supplier: STEMCELL Technologies

Immunomagnetic positive selection of CD11b+ cells from human peripheral blood mononuclear cells (PBMCs) or leukapheresis samples.

Supplier: STEMCELL Technologies

Media and supplements for differentiation of human pluripotent stem cells into blood vessels organoids.

Supplier: STEMCELL Technologies

Supplement for the differentiation of mouse naïve CD4+ T cells into Th2 cells.

Supplier: STEMCELL Technologies

Measure and transfer liquids precisely and safely using Corning® Lambda™ Plus multi-channel pipettors.

Supplier: STEMCELL Technologies

Column-free immunomagnetic positive selection of human CD66b+ cells for HLA analysis.

Supplier: STEMCELL Technologies

Immunomagnetic negative selection kit.

Supplier: STEMCELL Technologies

Column-free immunomagnetic positive selection of human B cells for HLA analysis.

Supplier: STEMCELL Technologies

Immunomagnetic positive selection of human CD33+ and CD66+ cells (e.g. myeloid cells).

Supplier: STEMCELL Technologies

Influenza (HLA class I control) peptide pool is a lyophilised mixture of 17 peptides from the influenza virus. The pool consists of defined HLA class I-restricted T cell epitopes, and can be used as an antigen-specific positive control to stimulate T cells.

Supplier: STEMCELL Technologies

Serum-free and xeno-free base medium for the expansion of B cells.

Supplier: STEMCELL Technologies

Serum-free and xeno-free base medium for the expansion of NK cells.