Human TNF-alpha Alexa Fluor® 647-conjugated Antibody

Applications

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Preparation and Storage

Background: TNF-alpha

Tumor necrosis factor alpha (TNF-alpha, TNF- alpha, TNFA ), also known as Cachectin and TNFSF2, is the prototypic ligand of the TNF superfamily. It is a pleiotropic molecule that plays a central role in inflammation, immune system development, apoptosis, and lipid metabolism. TNF- is produced by several lymphoid cells as well as by astrocytes, endothelial cells, and smooth muscle cells. Human TNF-alpha consisits of a 35 amino acid (aa) cytoplasmic domain, a 21 aa transmembrane segment, and a 177 aa extracellular domain (ECD). Within the ECD, human TNF-alpha shares 97% aa sequence identity with rhesus and 71%-92% with bovine, canine, cotton rat, equine, feline, mouse, porcine, and rat TNF-alpha. TNF-alpha is produced by a wide variety of immune, epithelial, endothelial, and tumor cells. TNF-alpha is assembled intracellularly to form a noncovalently linked homotrimer which is expressed on the cell surface. Cell surface TNF-alpha can induce the lysis of neighboring tumor cells and virus infected cells, and it can generate its own downstream cell signaling following ligation by soluble TNFR I. Shedding of membrane bound TNF-alpha by TACE/ADAM17 releases the bioactive cytokine, a 55 kDa molecular weight soluble trimer of the TNF-alpha extracellular domain. TNF-alpha binds the ubiquitous 55-60 kDa TNF RI and the hematopoietic cell-restricted 80 kDa TNF RII, both of which are also expressed as homotrimers present on virtually all cell types. Both type I and type II receptors bind TNF-alpha with comparable affinity, although only TNF RI contains a cytoplasmic death domain which triggers the activation of apoptosis. Soluble forms of both types of receptors are released and can neutralize the biological activity of TNF-alpha.

Product Datasheets

Related Research Areas

• Adipocytokines
• Cancer Biomarkers
• Conventional/Classical Dendritic Cells
• Co-stimulatory and Co-inhibitory Molecules
• Cytokines and Receptors in Allergy and Asthma
• Cytokines and Receptors in Angiogenesis
• Diabetes
• Diabetic Peripheral Neuropathy
• EMT Induction
• gamma delta T Cells
• Inflammatory Mediators
• Inflammatory/Monocyte-derived Dendritic Cells
• Isolation, Culture, and Identification of Natural Killer Cells
• Macrophage Activation Markers
• Microglia Activation Markers
• Molecules Secreted by VSMC
• Natural Killer T (NKT) Cells
• Neuroinflammatory Factors
• Obesity
• Plasmacytoid Dendritic Cells
• Preeclampsia
• Regulation of Apoptosis by TNF Superfamily Members
• Regulation of Natural Killer Cell Co-stimulation by TNF Superfamily Members
• Regulation of T Cell Co-stimulation by TNF Superfamily Members
• Search Cytokine and Growth Factor Products
• T Cell Cytokine Signaling
• Th1 Cells
• Th22 Cells
• TNF Superfamily Ligands