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Protéines et Peptides
Numéro de catalogue:
(STMC100-1422)
Fournisseur:
STEMCELL Technologies
Description:
Stimulating T cells with SARS-CoV-2 (Spike Protein) Omicron XBB.1.5.X Mutation peptide pool releases downstream cytokines and upregulates activation markers, enabling antigen-specific T cells to be detected or isolated for analysis. This pool is provided as two lyophilised mixtures (subpools) from the spike glycoprotein of SARS-CoV-2 Omicron XBB.1.5.X subvariant. The subpools contain 158 and 157 peptides, respectively, for a total of 315 peptides, and consist of 15-mer peptides with 11-amino-acid overlaps that cover amino acids 1 to 1269 on the spike protein. Through interactions with the angiotensin-converting enzyme 2 (ACE2) receptor, the spike protein enables the virus to attach to the cell membrane, and plays a critical role in viral entry (Hoffmann <i>et al.</i>; Walls <i>et al.</i>). Viral peptide pools are useful for a broad range of applications, including vaccine development, immunological research, and diagnostic assay development.
UOM:
1 * 1 PE
New Product
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Numéro de catalogue:
(STMC100-1405)
Fournisseur:
STEMCELL Technologies
Description:
Stimulating T cells with CMV (UL44) peptide pool releases downstream cytokines and upregulates activation markers, enabling antigen-specific T cells to be detected or isolated for analysis. CMV (UL44) peptide pool is a lyophilised mixture of 106 peptides from DNA polymerase processivity factor UL44 of human cytomegalovirus (CMV; strain AD169), and consists of 15-mer peptides with 11-amino-acid overlaps that cover amino acids 1 to 433 on UL44. UL44 contains a nuclear localization signal (Alvisi <i>et al.</i>) and may bind DNA directly, or form a C clamp partially surrounding it, similar to proliferation cell nuclear antigen (PCNA) (Appleton <i>et al.</i>). UL44 has also been found to interact with viral (Kim and Ahn) and host (Strang <i>et al.</i>) proteins that contribute to viral DNA replication and efficient viral growth. Viral peptide pools are useful for a broad range of applications, including vaccine development, immunological research, and diagnostic assay development.
UOM:
1 * 1 PE
New Product
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Fournisseur:
STEMCELL Technologies
Description:
B cell activating factor (BAFF) is part of the tumor necrosis factor (TNF) superfamily and is expressed by monocytes, macrophages, dendritic cells, and neutrophils (Mackay and amp; Browning; Scapini <i>et al.</i>). It binds to 3 receptors: BAFF-R, TACI, and BCMA, all of which are expressed by B cells at various times in their development (Liu and amp; Davidson). BAFF-R signaling activates the NF-kB signaling pathway, and promotes B cell survival, Ig class switching, and antigen presentation (Bossen and amp; Schneider; Liu and amp; Davidson; Naradikian <i>et al.</i>). BAFF also has functions in other cell types: it promotes monocyte survival and activation, proinflammatory cytokine secretion, and differentiation into macrophages (Chang <i>et al.</i>), and co-stimulates anti-CD3-mediated activation of human T cells (Huard <i>et al.</i>; Mackay and amp; Leung).
Fournisseur:
STEMCELL Technologies
Description:
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 <i>et al.</i>; Jaye <i>et al.</i>; Presta <i>et al.</i>). 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 <i>et al.</i>; Mohammadi <i>et al.</i>). Internalized FGF-acidic signals via protein kinase C and promotes cell survival by inhibiting p53 and proapoptotic signaling (Bouleau <i>et al.</i>). This product is animal component-free.
Fournisseur:
STEMCELL Technologies
Description:
Interleukin 21 (IL-21) is a pleiotropic cytokine that is composed of four α-helical bundles and primarily produced by natural killer T (NKT) cells, T follicular helper (Tfh) cells, and Th17 cells (Spolski and Leonard 2008). IL-21 signals via heterodimers of the IL-21 receptor (IL-21R) and the IL2RG-encoded common cytokine receptor γ-chain (Parrish-Novak <i>et al.</i>; Ozaki K <i>et al.</i> 2000), and utilizes the JAK/STAT, MAPK, and PI3K pathways (Spolski and Leonard 2014). IL-21 has been shown to have a critical role in regulating immunoglobulin production and differentiation of the pro-inflammatory Th17 population of cells (Ozaki <i>et al.</i> 2002; Nurieva <i>et al.</i>). Additionally, IL-21 specifically sustains CD8+ T cell effector activity and provides a mechanism of CD4+ T cell help during chronic viral infection (Elsaesser <i>et al.</i>). IL-21 signaling was also found critical for the development of type 1 diabetes in NOD mice (Sutherland <i>et al.</i>) and control of T cell autoimmunity by regulatory B cells (Yoshizaki <i>et al.</i>). This product is animal component-free.
Fournisseur:
ACROBIOSYSTEMS
Description:
Human recombinant CD48 (from HEK293)
Fournisseur:
STEMCELL Technologies
Description:
Basic fibroblast growth factor (bFGF) is a prototypic member of the fibroblast growth factor family. Cytokines in the FGF family possess broad mitogenic and cell survival activities (Folkman and Klagsbrun; Kimelman and Kirschner) and are involved in a variety of biological processes including cell proliferation, differentiation, survival, and apoptosis (Folkman and Klagsbrun; Klagsbrun; Rifkin and Moscatelli). bFGF has the β-trefoil structure (Ponting and Russell), binds to the four FGF receptor (FGFR) family members, and activates JAK/STAT, PI3K, ERK1/2, and other receptor tyrosine kinase (RTK) signaling pathways. It supports the maintenance of undifferentiated human embryonic stem cells (Xu <i>et al.</i>; Kang <i>et al.</i>), stimulates human embryonic stem cells to form neural rosettes (Zhang <i>et al.</i>), and improves proliferation of human mesenchymal stem cells and enhances chondrogenic differentiation (Solchaga <i>et al.</i>).
Fournisseur:
STEMCELL Technologies
Description:
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 <i>et al.</i>; Kent <i>et al.</i>). 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).
Numéro de catalogue:
(ACRBLA3-C52A0100UG)
Fournisseur:
ACROBIOSYSTEMS
Description:
Cynomolgus recombinant LAG-3 (from HEK293)
UOM:
1 * 1 EA
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Fournisseur:
Biorbyt
Description:
Mouse MCP1 (from <i>E. coli</i>)
Fournisseur:
Biorbyt
Description:
Human recombinant Annexin A13 (from <i>E. coli</i>)
Fournisseur:
ACROBIOSYSTEMS
Description:
Mouse recombinant 4-1BB (from HEK293)
Numéro de catalogue:
(SINO10369-HNAC-1)
Fournisseur:
Sino Biological
Description:
A DNA sequence encoding the human IL13 (AAK53823.1) (Met 1-Asn 132) was expressed and purified.
UOM:
1 * 1 mg
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Fournisseur:
ACROBIOSYSTEMS
Description:
Biotinylated human CD36/SR-B3 protein, His, Avitag™.
Numéro de catalogue:
(BIRBORB83474-20)
Fournisseur:
Biorbyt
Description:
Human recombinant MMP9
UOM:
1 * 20 µG
Il s'agit d'un élément MarketSource. Des frais supplémentaires peuvent s'appliquer.
Fournisseur:
STEMCELL Technologies
Description:
Flt3/Flk-2 (Fms-like tyrosine kinase 3/fetal liver kinase-2) Ligand is a hematopoietic cytokine that plays an important role as a co-stimulatory factor in the proliferation, differentiation, and survival of hematopoietic stem and progenitor cells and in the development of the immune system (Hannum <i>et al.</i>). Flt3/Flk-2 Ligand, together with stem cell factor and thrombopoietin, is commonly used to promote expansion of primitive CD34+ hematopoietic cells in culture. In combination with myeloid cytokines such as GM-CSF, G-CSF, or M-CSF, Flt3/Flk-2 Ligand enhances the growth and numbers of clonogenic myeloid progenitor cells. In synergy with the interleukins IL-3, IL-4, IL-7, IL-11, IL-12, IL-15, and GM-CSF and TNF-α, Flt3/Flk-2 Ligand regulates the development of various lymphoid progenitor cells, including dendritic cell, B cell, T cell, and NK cell progenitors. In contrast, Flt3/Flk-2 Ligand has no significant effect on erythropoiesis or megakaryopoiesis (Drexler andamp; Quentmeier; Wodnar-Filipowicz). Flt3/Flk-2 Ligand exists as membrane-bound and soluble isoforms. Both isoforms are biologically active and signal through the class III tyrosine kinase receptor (Flt3/Flk-2, CD135; Rosnet <i>et al.</i>). Flt3/Flk-2 Ligand is produced by a variety of cell types, including uncommitted and committed hematopoietic cells and stromal fibroblasts, whereas expression of the Flt3/Flk-2 receptor is restricted to CD34+ hematopoietic stem and progenitor cells. Flt3/Flk-2 receptor is also expressed on leukemic cells and outside the hematopoietic system in the brain, placenta, and testis (Drexler andamp; Quentmeier; Hannum <i>et al.</i>).
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