Cell Signaling Technology

Product Pathways - NF-kB Signaling

TNF-α Antibody #3707

Applications Reactivity Sensitivity MW (kDa) Source
W IP H M Endogenous 17 mature. 25 precursor. Rabbit

Applications Key:  W=Western Blotting  IP=Immunoprecipitation
Reactivity Key:  H=Human  M=Mouse
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.

Protocols

Specificity / Sensitivity

TNF-α Antibody detects endogenous levels of mature TNF-α as well TNF-α precursor protein.

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Gly198 of human TNF-α protein. Antibodies are purified by protein A and peptide affinity chromatography.

Western Blotting

Western Blotting

Western blot analysis of extracts from Raw 264.7 cells, untreated (-) or LPS-treated (1 µg/ml, 18 hr; +), using TNF-α Antibody.

Western Blotting

Western Blotting

Western blot analysis of recombinant Human Tumor Necrosis Factor-α (hTNF-α) #8902 using TNF-α Antibody.

Background

TNF-α, the prototypical member of the TNF protein superfamily, is a homotrimeric type-II membrane protein (1,2). Membrane-bound TNF-α is cleaved by the metalloprotease TACE/ADAM17 to generate a soluble homotrimer (2). Both membrane and soluble forms of TNF-α are biologically active. TNF-α is produced by a variety of immune cells including T cells, B cells, NK cells, and macrophages (1). Cellular response to TNF-α is mediated through interaction with receptors TNF-R1 and TNF-R2 and results in activation of pathways that favor both cell survival and apoptosis depending on the cell type and biological context. Activation of kinase pathways (including JNK, Erk (p44/42), p38 MAPK, and NF-κB) promotes the survival of cells, while TNF-α-mediated activation of caspase-8 leads to programmed cell death (1,2). TNF-α plays a key regulatory role in inflammation and host defense against bacterial infection, notably Mycobacterium tuberculosis (3). The role of TNF-α in autoimmunity is underscored by blocking TNF-α action to treat rheumatoid arthritis and Crohn’s disease (1,2,4).

  1. Aggarwal, B.B. (2003) Nat Rev Immunol 3, 745-56.
  2. Hehlgans, T. and Pfeffer, K. (2005) Immunology 115, 1-20.
  3. Lin, P.L. et al. (2007) J Investig Dermatol Symp Proc 12, 22-5.
  4. Brennan, F.M. and McInnes, I.B. (2008) J Clin Invest 118, 3537-45.

Application References

Have you published research involving the use of our products? If so we'd love to hear about it. Please let us know!

Companion Products

This product is intended for research purposes only. The product is not intended to be used for therapeutic or diagnostic purposes in humans or animals.

Products