Mouse TGF-β1 ELISA kitEK0506

• Aluminium pouches with a Microwell Plate coated with antibody to mouse TGF-β1 (8X12)
• 2 vials mouse TGF-β1 Standard lyophilized, 2000 pg/ml upon reconstitution
• 2 vials concentrated Biotin-Conjugate anti-mouse TGF-β1 antibody
• 2 vials Streptavidin-HRP solution,
• 1 bottle Standard /sample Diluent
• 1 bottle Biotin-Conjugate antibody Diluent
• 1 bottle Streptavidin-HRP Diluent
• 1 bottle Wash Buffer Concentrate 20x (PBS with 1% Tween-20)
• 1 vial Substrate Solution
• 1 vial Stop Solution
• 2 vial 1N HCl
• 2 vial 1.2 N NaOH/0.5 M HEPES
• 2 vial 2.7N NaOH/1 M HEPE
• 2 vial 2.5N Acetic Acid/10 M Urea
• 3 pieces Adhesive Films
• package insert

Transforming Growth Factor-beta (TGF-β) is a pleiotropic cytokine which exists in five isoforms, known as TGF-β1-5. TGF-β1 is the most abundant form in lymphoid organs and is found almost ubiquitously while other isoforms are expressed in a more restricted distribution. The biologically active forms of all isoforms are disulfide-linked homodimers. The heat- and acid- stable monomeric subunits have a length of 112 amino acids. TGF-β1 is produced in very high levels by platelets. Other cellular sources of TGF-β1 include macrophages, lymphocytes, endothelial cells, chondrocytes, and leukemic cells. TGF-β1 secretion can be induced by steroids, retinoids, EGF, NGF, vitamin D3, and IL-1. Activities of TGF-β1 include inhibition of cell growth for inhibitor for normal and transformed epithelial cells, endothelial cells, fibroblasts, neurons, and lymphoid cells and other hematopoietic cell types. TGF-β1 inhibits the proliferation of T cells and NK cells and down-regulates the activities of activated macrophages. TGF-β1 blocks the anti-tumor activity of IL-2-bearing lymphokine-activated killer (LAK) cells. TGF-β1 has a critical role in the development of regulatory T cells. Dendritic cells exposed to tumors have been reported to secrete TGF-β1 and stimulate expansion of naturally-occurring T reg cells. Moreover, TGF-β1 has been shown to act as a costimulatory factor for expression of Foxp3, leading to the differentiation of CD4+CD25+ Treg cells from peripheral CD4+CD25- progeny. TGF-β-induced regulatory T cells have been termed Ti-Treg.

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