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背景介绍 Human CD137 (4-1BB; TNFRS9) is an inducible co-stimulatory molecule that activates T cells. CD137:CD137L-mediated signaling has been shown to be important for proliferation, effector functions and survivals of T cells. CD137 is also expressed in NK and NKT cells. Accumulating evidence shows a role for CD137:CD137L signaling in inflammation, suggesting that inhibition of this pathway may provide a therapeutic avenue to treat autoimmune and inflammatory diseases. Similarly, antibodies targeting CD137 activation in immune cells have demonstrated potent anti-tumor properties in cancer patients. 产品介绍 Recombinant HEK293 cell line expressing a full length human CD137 (NM_003811). The NF-κB luciferase reporter construct is stably integrated into the genome. The firefly luciferase gene is controlled by 4 copies of NF-κB response element located upstream of the TATA promoter. Following activation by human CD137 ligand, NF-κB transcription factors bind to the DNA response elements to induce transcription of the luciferase gene.
询价背景介绍 LIGHT (TNFSF14) is a key component of the communication system that controls the responses of T-Cells. LIGHT activates two cell surface receptors, the Herpesvirus Entry Mediator (HVEM) and the Lymphotoxin-beta Receptor (LTβR). The LIGHT-HVEM axis is an important costimulatory pathway for T cells, it has been shown to activate NF-κB; LIGHT/HVEM pair are co-stimulatory immune checkpoint molecules for cancer immunotherapy, LIGHT expressing cells have been shown to be more potent than the soluble LIGHT for activating HVEM expressed on T cell surface. 产品介绍 Recombinant stable clonal CHO cell line constitutively expressing full length human LIGHT protein, also known as TNFSF14, (Genbank #NM_003807). Surface expression is confirmed by flow cytometry.
询价背景介绍 This cell line expresses human GITR (glucocorticoid-induced TNFR family-related gene; TNFRSF18; CD357), Genbank Accession Number NM_ 004195.2. 产品介绍 Recombinant HEK293 cell constitutively expressing full length human GITR. Surface expression is confirmed by flow cytometry.
询价产品介绍 The GAS reporter (Luc)-HeLa cell line is designed to monitor the activity of interferon gamma-induced signal transduction pathways in cultured cells by measuring activated STAT1 homodimers. It contains a firefly luciferase gene driven by three copies of the interferon gamma-activated sites (GAS) located upstream of the minimal TATA promoter. IFNγ first binds to a heterodimeric receptor consisting of two chains, IFNGR1 and IFNGR2, causing its dimerization and the activation of specific Janus family kinases (JAK1 and JAK2). Two STAT1 molecules associate with this ligand-activated receptor complex and are activated by phosphorylation to form active homodimer. The active STAT1 homodimers translocate to the nucleus where they bind interferon gamma-activated sites (GAS) in the promoter of IFNγ inducible genes, including luciferase reporter gene.
询价背景介绍 Transferrin Receptor Protein-1 (TFRC) is a cell surface receptor that binds ferric-iron-loaded transferrin in the bloodstream at high affinity to facilitate iron uptake into cells. TFRC is therefore an integral component of the body's iron supply chain and general homeostasis. Intracellular iron levels, hypoxia and CRE signaling regulate TFRC transcription. In addition, TFRC is upregulated in correlation with tumor-progressive stages of multiple forms of cancer. At the cellular level iron surplus results in oxygen radical formation and cellular dysfunction, while iron deficiency can cause rapid cell death. Deregulated iron levels are therefore correlated with multiple disease states including Parkinson's Disease, Amyotrophic Lateral Sclerosis (ALS), Huntington's Disease, Multiple Sclerosis (MS), and tumorigenesis. Equally important are potential therapeutic uses of TFRC. As TFRC is upregulated on the surface of tumor cells, it has been targeted to inhibit adult T-cell leukemia/lymphoma. Additionally, TFRC has found important utility in treatments of neurological diseases. Drug discovery in the central nervous system (CNS) space has historically been challenged by limited access of therapeutics across the blood brain barrier (BBB). As TFRC is highly expressed on the surface of brain capillary endothelial cells within the BBB, drug delivery strategies are being developed to leverage transcytosis of TFRC-bound entities from the bloodstream to the CNS (i.e. receptor mediated transport, or RMT). Current approaches include PEGylated liposomes coated with the TFRC ligand transferrin, as well as anti-TFRC antibodies linked to nanoparticles (immunoliposomes) carrying a therapeutic payload. 产品介绍 Recombinant clonal HEK293 stable cell line constitutively expressing full length human Transferrin Receptor Protein-1 (TFRC and TFR1, also known as human CD71 protein, GenBank accession #NM_001128148). The surface expression of TFRC was confirmed by flow cytometry.
询价产品介绍 This cell line has been engineered for use with the CRISPR Synergistic Activation Mediator (SAM) system to induce transcriptional activation and expression of any gene of interest. Cells stably express a mutated dCas9 (Streptococcus pyogenes CRISPR associated protein 9), lacking any endonuclease activity, fused to VP64, a transcriptional activator. Stable dCas9-VP64 expression is maintained with Blasticidin resistance. Cells also stably express P65 (Transcription Factor p65, or Nuclear Factor NF-κB p65) and HSF1 (Heat Shock Factor 1) fused with an MS2 tag, which is maintained with Hygromycin resistance. When these cells are transfected with an MS2- tagged sgRNA targeting the promoter region of the gene of interest, dCas9-VP64 and MS2-P65-HSF1 are recruited to the site in the genomic DNA and begin transcription, inducing expression of the desired gene.
询价产品介绍 This cell line has been engineered for use with the CRISPR Synergistic Activation Mediator (SAM) system to induce transcriptional activation and expression of any gene of interest. Cells stably express a mutated dCas9 (Streptococcus pyogenes CRISPR associated protein 9), lacking any endonuclease activity, fused to transcriptional activator VP64. Stable dCas9-VP64 expression is maintained with Blasticidin resistance. Cells also stably express P65 (Transcription Factor p65, or Nuclear Factor NF-κB p65) and HSF1 (Heat Shock Factor 1) fused with an MS2 tag, which is maintained with Hygromycin resistance. When these cells are transfected with an MS2- tagged sgRNA targeting the promoter region of the gene of interest, dCas9-VP64 and MS2-P65-HSF1 are recruited to the genomic DNA and begin transcription, inducing expression of the desired gene.
询价产品介绍 This cell line has been engineered for use with the CRISPR Synergistic Activation Mediator (SAM) system to induce transcriptional activation and expression of any gene of interest. Cells stably express a mutated dCas9 (Streptococcus pyogenes CRISPR associated protein 9), lacking any endonuclease activity, fused to transcriptional activator VP64. Stable dCas9-VP64 expression is maintained with Blasticidin resistance. Cells also stably express P65 (Transcription Factor p65, or Nuclear Factor NF-κB p65) and HSF1 (Heat Shock Factor 1) fused with an MS2 tag, which is maintained with Hygromycin resistance. When these cells are transfected with an MS2- tagged sgRNA targeting the promoter region of the gene of interest, dCas9-VP64 and MS2-P65-HSF1 are recruited to the genomic DNA and begin transcription, inducing expression of the desired gene.
询价背景介绍 B-lymphocyte antigen CD19 (Cluster of Differentiation 19), also known as B-Lymphocyte Surface Antigen B4 and CVID3, is a transmembrane protein expressed in follicular dendritic cells and all B lineage cells except plasma cells. CD19 plays two major roles in human B cells. It acts as an adaptor protein to recruit cytoplasmic signaling proteins to the membrane and it works within the CD19/CD21 complex to decrease the threshold for B cell receptor signaling pathways. Due to its presence on all B cells, it is a biomarker for B lymphocyte development and lymphoma diagnosis and can be used as a target for leukemia immunotherapies. CD19-targeted therapies based on T cells that express CD19-specific chimeric antigen receptors (CARs) have been utilized for their antitumor abilities in patients with CD19+ lymphoma and leukemia, such as Non-Hodgkins Lymphoma (NHL), CLL and ALL. CD20 (MS4A1) is a glycosylated phosphoprotein expressed on the cell surface of B cells. Although the functional significance of CD20 is not clear, and CD20 has no known ligands, CD20 has been shown to regulate intracellular calcium levels. CD20 is a highly attractive target antigen for immunotherapy because it is expressed in more than 90% of patients with B-cell lymphoma. First approved in 1997, Rituximab (Rituxan) is a chimeric monoclonal antibody targeting CD20 and has been classified by the World Health Organization as an "Essential Medicine". Since then, additional monoclonal antibodies against CD20 have been approved or are being tested in clinical trials for the treatment of multiple sclerosis (MS), chronic lymphocytic leukemia (CLL), follicular lymphoma, diffuse large B cell lymphoma (DLBCL), rheumatoid arthritis, non-Hodgkin's lymphoma, systemic lupus erythematosus, and myalgic encephalomyelitis (chronic fatigue syndrome). Additionally, more recently, anti-CD20-CD19 bispecific CAR-T cells have been developed to address concerns over potential relapse. 产品介绍 Clonal stable CHO cell line constitutively expressing full length human CD19 protein (also known as CVID3, Genbank accession #NM_001770) and human CD20 protein (also known as MS4A1 and FMC7, Genbank accession #NM_021950). This cell line was derived from our CHO-K1 Luciferase cells (BPS Bioscience, #79725), therefore it also constitutively expresses the firefly luciferase reporter. Surface expression of CD19 and CD20 were confirmed by flow cytometry.
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