Cell Signaling Technology

Product Pathways - PI3K / Akt Signaling

PTEN Antibody #9552

Applications Reactivity Sensitivity MW (kDa) Source
W IP H M R Hm Mk (C) Endogenous 54 Rabbit

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

Protocols

Specificity / Sensitivity

PTEN Antibody detects endogenous levels of total PTEN protein. The antibody does not cross-react with related proteins.

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to the carboxy terminus of human PTEN. Antibodies are purified by protein A and peptide affinity chromatography.

Western Blotting

Western Blotting

Western blot analysis of extracts from HeLa cells, transfected with 100 nM SignalSilence® Control siRNA (Fluorescein Conjugate) #6201 (-) or SignalSilence® PTEN siRNA I (+), using PTEN Antibody #9552 and p42 MAPK (Erk2) Antibody #9108. PTEN Antibody confirms silencing of PTEN expression, while the p42 MAPK (Erk2) Antibody is used to control for loading and specificity of PTEN siRNA.

Western Blotting

Western Blotting

Western blot analysis of extracts from HeLa cells, transfected with 100 nM SignalSilence® Control siRNA (Fluorescein Conjugate) #6201 (-) or SignalSilence® PTEN siRNA II (+), using PTEN (138G6) Rabbit mAb and β-Actin (13E5) Rabbit mAb #4970. PTEN (138G6) Rabbit mAb confirms silencing of PTEN expression, while the β-Actin (13E5) Rabbit mAb is used to control for loading and specificity of PTEN siRNA

Western Blotting

Western Blotting

Western blot analysis of extracts from various cell lines, using PTEN Antibody.


Background

PTEN (phosphatase and tensin homologue deleted on chromosome ten), also referred to as MMAC (mutated in multiple advanced cancers) phosphatase, is a tumor suppressor implicated in a wide variety of human cancers (1). PTEN encodes a 403 amino acid polypeptide originally described as a dual-specificity protein phosphatase (2). The main substrates of PTEN are inositol phospholipids generated by the activation of the phosphoinositide 3-kinase (PI3K) (3). PTEN is a major negative regulator of the PI3K/Akt signaling pathway (1,4,5). PTEN possesses a carboxy-terminal, noncatalytic regulatory domain with three phosphorylation sites (Ser380, Thr382, and Thr383) that regulate PTEN stability and may affect its biological activity (6,7). PTEN regulates p53 protein levels and activity (8) and is involved in G protein-coupled signaling during chemotaxis (9,10).

  1. Cantley, L.C. and Neel, B.G. (1999) Proc Natl Acad Sci USA 96, 4240-5.
  2. Myers, M.P. et al. (1997) Proc Natl Acad Sci USA 94, 9052-7.
  3. Myers, M.P. et al. (1998) Proc Natl Acad Sci USA 95, 13513-8.
  4. Wan, X. and Helman, L.J. (2003) Oncogene 22, 8205-11.
  5. Wu, X. et al. (1998) Proc Natl Acad Sci USA 95, 15587-91.
  6. Vazquez, F. et al. (2000) Mol Cell Biol 20, 5010-8.
  7. Torres, J. and Pulido, R. (2001) J Biol Chem 276, 993-8.
  8. Freeman, D.J. et al. (2003) Cancer Cell 3, 117-30.
  9. Funamoto, S. et al. (2002) Cell 109, 611-23.
  10. Iijima, M. and Devreotes, P. (2002) Cell 109, 599-610.

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

For Research Use Only. Not For Use In Diagnostic Procedures.

Products