Procurou por: STEMCELL TECHNOLOGIES

Código de Artigo: (STMC100-1332)

Fornecedor: STEMCELL TECHNOLOGIES

Descrição: Apolipoprotein H (apo H) has been shown to promote the coagulation of blood platelets by inhibiting thrombomodulin complex and inactivating protein C (Keeling <i>et al.</i>), but can also act as an anticoagulant by binding thrombin and inhibiting its procoagulant effects (Pozzi <i>et al.</i>). 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 <i>et al.</i>). 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 lyophilised with ≥93% purity, and is verified by LAL analysis to ensure endotoxin levels are ≤1,0 EU/μg protein.

UOM: 1 * 100 µG

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Código de Artigo: (STMC100-1397)

Fornecedor: STEMCELL TECHNOLOGIES

Descrição: Stimulating T cells with HPV18 (L2) peptide pool releases downstream cytokines and upregulates activation markers, enabling antigen-specific T cells to be detected or isolated for analysis. A lyophilised mixture of 113 peptides from minor capsid protein L2 of human papillomavirus type 18 (HPV18), HPV18 (L2) peptide pool consists of 15-mer peptides with 11-amino-acid overlaps that cover amino acids 1 to 462 on L2. With two nuclear localization signals, L2 may enter the nuclei of host cells via several import pathways mediated by Kap α2β1 heterodimers, Kap β2, and Kap β (Klucevsek <i>et al.</i>). L2 can also assemble into virus-like particles, and may have a role in encapsidation (Stauffer <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 UA

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Código de Artigo: (STMC100-1383)

Fornecedor: STEMCELL TECHNOLOGIES

Descrição: Stimulating T cells with SARS-CoV-2 (Spike Protein) Omicron/B.1.1.529 WT reference peptide pool releases downstream cytokines and upregulates activation markers, enabling antigen-specific T cells to be detected or isolated for analysis. This peptide pool is a lyophilised mixture of 82 peptides from the spike glycoprotein of the wild-type SARS-CoV-2 virus. Consisting of the wild-type peptides that correspond to the mutated portions of the spike protein found in the SARS-CoV-2 Omicron variant (B.1.1.529), this pool is recommended to be used as a reference for the SARS-CoV-2 (Spike Protein) Omicron/B.1.1.529 mutation peptide pool. 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 UA

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Fornecedor: STEMCELL TECHNOLOGIES

Descrição: For detection and measurement of human interleukin 4.

Fornecedor: STEMCELL TECHNOLOGIES

Descrição: For detection and measurement of mouse interleukin 12 and mouse interleukin 23 (p40) subunit.

Fornecedor: STEMCELL TECHNOLOGIES

Descrição: For detection and measurement of human interleukin 12 (p70) subunit.

Fornecedor: STEMCELL TECHNOLOGIES

Descrição: For detection and measurement of mouse tumor necrosis factor-alpha.

Código de Artigo: (STMC100-1408)

Fornecedor: STEMCELL TECHNOLOGIES

Descrição: Stimulating T cells with VZV (gE) Peptide pool releases downstream cytokines and upregulates activation markers, enabling antigen-specific T cells to be detected or isolated for analysis. VZV (gE) Peptide pool is a lyophilised mixture of 153 peptides from the envelope glycoprotein E (gE) of Varicella-zoster virus (VZV; strain Dumas), and consists of 15-mer peptides with 11-amino-acid overlaps that cover amino acids 1 to 623 on gE. gE is essential for VZV replication (Mo <i>et al.</i>, 2002) and may contribute to viral pathogenesis by facilitating epithelial cell-cell contacts (Mo <i>et al.</i>, 2000). Viral peptide pools are useful for a broad range of applications, including vaccine development, immunological research, and diagnostic assay development.

UOM: 1 * 1 UA

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Código de Artigo: (STMC100-1410)

Fornecedor: STEMCELL TECHNOLOGIES

Descrição: Stimulating T cells with Clostridium (Tetanus Toxin) Peptide pool releases downstream cytokines and upregulates activation markers, enabling antigen-specific T cells to be detected or isolated for analysis. Clostridium Peptide pool is a lyophilised mixture of 326 peptides from tetanus toxin of Clostridium tetani (strain Massachusetts/E88), and consists of 15-mer peptides with 11-amino-acid overlaps that cover amino acids 1 to 1315 on tetanus toxin. Tetanus toxin entry into central neurons is mediated by the synaptic vesicle-binding protein SV2 (Yeh <i>et al.</i>), where it selectively cleaves synaptobrevin (Link <i>et al.</i>; Schiavo <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 UA

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Fornecedor: STEMCELL TECHNOLOGIES

Descrição: Interleukin 7 (IL-7) is a member of the Type I cytokine family that is critical for T and B cell development and survival. It is produced by non-hematopoietic cells in the thymus, lymphoid organs, and by bone marrow stromal cells (Lundström <i>et al.</i>). IL-7 binds to a receptor (IL-7R) composed of common gamma chain and IL-7Ra (CD127) and signals through the JAK/STAT and PI3K pathways. IL-7 regulates the survival of naïve and memory CD4+ and CD8+ T cells, γδ T cells, NK T cells, innate lymphoid cells, and T regulatory cells (Carrette and Surh). Although a deficiency in IL-7R still permits the generation of normal numbers of peripheral B cells in humans, stimulation of human B cell precursors with IL-7 could promote STAT-5-dependent proliferation and survival in vitro (Clark <i>et al.</i>; Corfe and Paige).

Código de Artigo: (STMC100-1401)

Fornecedor: STEMCELL TECHNOLOGIES

Descrição: Stimulating T cells with HHV6 (U54) peptide pool releases downstream cytokines and upregulates activation markers, enabling antigen-specific T cells to be detected or isolated for analysis. HHV6 (U54) peptide pool is a lyophilised mixture of 112 peptides from protein U54 of human herpesvirus 6B (HHV-6B; strain Z29), and consists of 15-mer peptides with 11-amino-acid overlaps that cover amino acids 1 to 459 on U54. U54 is a tegument transactivator and is suggested to be a homolog of the CMV UL82/83 (pp65/72K) protein (Isegawa <i>et al.</i>; Nicholas). In infected T cells, U54 has been shown to inhibit gene transcription of interleukin 2 (IL-2), the T cell growth factor, which likely contributes to viral persistence (Iampietro <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 UA

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Fornecedor: STEMCELL TECHNOLOGIES

Descrição: Interleukin 11 (IL-11) is a pleiotropic cytokine with effects on various tissues including the bone marrow, brain, and intestinal mucosa (Du and amp; Williams). It belongs to the IL-6 family of cytokines that share a common signal transducer, gp130. Culture of mouse bone marrow cells with IL-11 in combination with IL-3, IL-6, and stem cell factor induces significant expansion and proliferation of colony-forming cells in vitro (Peters <i>et al.</i>). In addition, in combination with IL-3, IL-11 significantly enhances the growth of megakaryocytic colonies in vitro, suggesting its role in augmenting mouse megakaryopoiesis (Yonemura <i>et al.</i>). IL-11 is expressed in a wide range of normal adult mouse tissues, including the central nervous system, thymus, lung, and bone. The mouse IL-11 cDNA was cloned using an expression library generated from the lipopolysaccharide-induced mouse fetal thymic cell line, T2 (Morris <i>et al.</i>). The binding of IL-11 to its receptor induces heterodimerization with the gp130 subunit and activation of JAK tyrosine kinases. IL-11 also plays a role in cancer progression by inducing the proliferation of epithelial cancer cells and the survival of metastatic cells at distant organs. Recently, IL-11 has gained interest for its role in the pathogenesis of diseases in dysregulated mucosal homeostasis associated with STAT3 upregulation, including gastrointestinal cancers (Putoczki <i>et al.</i>).

Código de Artigo: (STMC100-1409)

Fornecedor: STEMCELL TECHNOLOGIES

Descrição: Stimulating T cells with VZV (IE63) peptide pool releases downstream cytokines and upregulates activation markers, enabling antigen-specific T cells to be detected or isolated for analysis. VZV (IE63) peptide pool is a lyophilised mixture of 67 peptides from the transcriptional regulator ICP22 homolog (IE63) of Varicella-zoster virus (VZV; strain Oka vaccine), and consists of 15-mer peptides with 11-amino-acid overlaps that cover amino acids 1 to 278 on IE63. Expressed during VZV latency and reactivation (Lungu <i>et al.</i>), IE63 demonstrates repressive activity in both the cytoplasm and nucleus of infected cells (Bontems <i>et al.</i>). Host interferon alpha (IFN-α) activity is inhibited by VZV IE63, which likely contributes to VZV pathogenesis (Ambagala and Cohen). Viral peptide pools are useful for a broad range of applications, including vaccine development, immunological research, and diagnostic assay development.

UOM: 1 * 1 UA

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Fornecedor: STEMCELL TECHNOLOGIES

Descrição: Platelet-derived growth factor (PDGF) is a dimeric glycoprotein consisting of two disulfide bridge-stabilized polypeptide chains, A and B, which are assembled as heterodimers (PDGF-AB) or homodimers (PDGF-AA and PDGF-BB) (Fretto <i>et al.</i>; Westermark and Heldin). PDGF signals through the receptor tyrosine kinases PDGFRalpha and PDGFRbeta. It has been shown that PDGF-induced migration involves signaling pathways involving MEK/ERK, EGFR, Src, and PI3K/AKT (Kim <i>et al.</i>). PDGF is a potent mitogen for cells of mesenchymal origin- like 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 <i>et al.</i>; Sachinidis <i>et al.</i>). It has been shown that PDGF-AB together with 5-Azacytidine (Catalog #72012), induces the conversion of mature bone and fat cells into tissue-regenerative multipotent stem cells (Chandrakanthan <i>et al.</i>).

Fornecedor: STEMCELL TECHNOLOGIES

Descrição: Follistatin, a glycosylated monomeric protein, is a modulator of transforming growth factor beta (TGF-β) superfamily signaling. It binds to and inhibits the function of activin, myostatin, growth differentiation factors, and bone morphogenetic proteins (BMP) (Hansen and Plomgaard). Follistatin inhibits mesoderm induction, suppresses synthesis and secretion of pituitary follicle-stimulating hormone, regulates liver regeneration, and causes infertility (Guo <i>et al.</i>; Iemura <i>et al.</i>). Follistatin exhibits anti-inflammatory effects, and it could be used as a biomarker in cancer (Hansen and Plomgaard).

Fornecedor: STEMCELL TECHNOLOGIES

Descrição: Insulin-like growth factor 1 (IGF-I) is a polypeptide that belongs to the family of insulin-like growth factors that are similar in molecular structure to proinsulin. IGF-I binds to the IGF-I receptor and is a potent activator of the PI3K/AKT pathway and also activates ERK1/2 signaling. IGF-I is required for embryonic development, and it is produced mainly in the liver in response to a hepatocyte growth hormone. In the absence of insulin, IGF-I is necessary for the maintenance of human pluripotent stem cells (Wang <i>et al.</i>). Together with IL-3, IGF-I stimulates differentiation and proliferation of myeloid cells and has been shown to regulate lymphopoiesis by stimulating proliferation and differentiation of T and B cells in lymphoid organs (Heemskerk <i>et al.</i>). This product is animal component-free.