Application Note
TNF-a (Tumor necrosis factor), being an endogenous pyrogen, is able to induce fever, apoptotic cell death, inflammation and to inhibit tumorigenesis. As reported, TNFa could inhibit the proliferation and induce apoptosis of A549 cells, and the concentration of IL-1β and IL-8 in cell supernatant will increase after stimulation. Therefore, A549 cells were incubated in DMEM with TNFa (1 ng/ml, 10 ng/ml, 100 ng/ml, 1000 ng/ml) for 8h, IL-1β and IL-8 were detected in the cell supernatant by ELISA. After incubation with TNF-a for 8h, IL-1β significantly increased in the cell supernatant.
Observed MW
21 kDa.
Form
Lyophilized powder
Buffer
Reconstitute with 20mM Tris and 150mM NaCl to 0.1-1.0mg/ml. Do not vortex. Lyophilized from 20mM Tris, 150mM NaCl, 1mM EDTA, 1mM DTT, 0.01% SKL, 5% Trehalose.
Preservative
ProClin 300
Storage
For short-term storage (1-2 weeks), store at 4ºC. For long-term storage, store at -20ºC or below. After reconstitution, keep as concentrated solution. Avoid freeze-thaw cycles.
Region/Sequence
N-terminal His-Tag; Leu80~Leu235 (NP_036807.1)
Expression System
E. coli
Purity
> 90%
Endotoxin
< 1 EU/μg
Conjugation
Unconjugated
Note
For laboratory use only. Not for any clinical, therapeutic, or diagnostic use in humans or animals. Not for animal or human consumption.
Synonyms
tumor necrosis factor , RATTNF , TNF-alpha , Tnfa
Background
acts as a cytokine; binds TNF receptors; plays a role in regulation of cell proliferation, induction of apoptosis, and inflammatory response [RGD, Feb 2006]
Database
Research Area