LEAF™ Purified anti-human/mouse TGF-β1 Antibody

TGF-β1 is a multifunctional cytokine that plays pivotal roles in diverse biological processes. TGF-β1 is synthesized as a 390 amino acid precursor that is cleaved by furin, localized in the trans-Golgi network, in residue 278.  Furin processes the TGF-β1 precursor at the carboxyl side of the consensus sequence RHRR which precedes the NH2-terminal Ala 279 residue of the mature TGF-β1. The TGF-β1 precursor includes the latency-associated peptide (LAP dimer) in the N-terminal portion and the 25 kD portion that constitutes the mature TGF-β1 in the C-terminal. LAP dimer and the TGF-β1 mature protein remain non-covalently associated after furin cleavage and this complex does not bind to the TFG-β1 receptor. In addition, the TGF-β1 latent complex is joined covalently through LAP to LTBP. The TGF-β1 active form requires dissociation from LAP. Some activators can release TGF-β1 from LAP such as thrombospondin-1, reactive oxygen species, and the integrins avb6 and avb8. Mouse TGF-β1 converts naïve T cells into regulatory T (Treg) cells that prevent autoimmunity. Although human TGF-β1 is widely used for inducing FOXP3+ in vitro, it might not be an essential factor for human Treg differentiation. Th17 murine can be induced from naïve CD4+ T cells by the combination of TGF-β1 and IL-6 or IL-21. Nevertheless, the regulation of human Th17 differentiation is distinct. TGF-β1 seems to have dual effects on human Th17 differentiation in a dose-dependent manner. While TGF-β1 is required for the expression of RORgt, in human naïve CD4+ T cells from cord blood, TGF-β1 can inhibit the function of RORgt at high doses. By using serum-free medium, it has been clarified that the optimum conditions for human Th17 differentiation are TGF-β1, IL-1b, and IL-2 in combination with IL-6, IL-21, or IL-23.

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Category Antibodies
Price $125.00;$450.00
Publication 13
Application Block
Host Mouse IgG1, κ
Reactivity Human, Mouse
Purification The LEAF™ (Low Endotoxin, Azide-Free) antibody was purified by affinity chromatography.
immunogen Human TGF-β1
Application Note ELISA Detection: To measure TGF-β1, this antibody can be used as a detection antibody in sandwich ELISA format, and paired with the purified 21C11 antibody (Cat. No. 525301) as the capture antibody. Recombinant Human TGF-β1 (ELISA Std.) (Cat. No. 580709) can be used as the protein standard.Blocking: Clone 19D8 LEAF™ purified antibody (Endotoxin <0.1 EU/μg, Azide-Free, 0.2 μm filtered) is useful for in vitro blocking of human and mouse TGF-β1 bioactivity. The 19D8 clone does not inhibit the bioactivity of human TGF-β2 or TGF-β3 in the Mv1Lu-(caga)12-Luc reporter cell assay.Note: For testing TGF-β1 in serum, plasma or supernatant, BioLegend's ELISA LEGEND MAX™ Kits (Cat. No. 436708 & 437708) are specially developed and recommended.
Form 0.2 µm filtered in phosphate-buffered solution, pH 7.2, containing no preservative. Endotoxin level is
Storage The TGF-β1 antibody solution should be stored undiluted between 2°C and 8°C. This LEAF™ solution contains no preservative; handle under aseptic conditions.
Supplier Biolegend
Isotype Mouse IgG1, κ
Dilution Each lot of this antibody is quality control tested by blocking activity of human TGF-β1 (500 pg/ml) in Mv1Lu-(caga)12-Luc reporter cells. The ED50 is 0.05 - 0.1 µg/ml. It is recommended that the reagent be titrated for optimal performance for each application.
Catalog Number 521703
Concentration 1.0 mg/ml
Alternative Names Transforming growth factor-beta 1 (TGF-b1), TGFB1, CED, DPD1
Size 50 µg;500 µg
Clone 19D8