Product Pathways - Jak/Stat Pathway
SignalStain® Phospho-Stat IHC Sampler Kit #8113
|8113S||1 Kit (3 x 40 µl)||---||In Stock||---|
|8113||carrier free and custom formulation / quantity||email request|
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|Kit Includes||Quantity||Antigen Retrieval / Diluent||Isotype|
|Phospho-Stat1 (Tyr701) (58D6) Rabbit mAb #9167||40 µl||EDTA / SignalStain® Antibody Diluent #8112||Rabbit IgG|
|Phospho-Stat3 (Tyr705) (D3A7) XP® Rabbit mAb #9145||40 µl||EDTA / SignalStain® Antibody Diluent #8112||Rabbit IgG|
|Phospho-Stat5 (Tyr694) (C11C5) Rabbit mAb #9359||40 µl||EDTA / SignalStain® Antibody Diluent #8112||Rabbit IgG|
|*SignalStain® Antibody Diluent #8112||25 ml|
|†SignalSlide® Phospho-Stat1/3/5 IHC Controls #8105||1 Pack|
*SignalStain® Antibody Diluent is supplied as a working solution and should be stored at 4ºC (packaged separately).
†Control slides should be stored at 4ºC (packaged separately).
Custom Ordering Details
The control slides that accompany this kit are cut freshly upon ordering. Please allow three to five days for your order to be processed and shipped.
The SignalStain® Phospho-Stat IHC Sampler Kit from Cell Signaling Technology allows the researcher to examine paraffin-embedded tissues or cells with antibodies that will detect phosphorylated Stat proteins. Each antibody is validated for use in immunohistochemical assays using multiple approaches. Also included in the kit are control slides that can be used to verify the performance of each antibody and a primary antibody diluent. Please see table above for the recommended antibody diluent for each antibody provided in the kit.
Specificity / Sensitivity
Each antibody in the SignalStain® Phospho-Stat IHC Sampler Kit detects endogenous levels of its target protein. Phospho-Stat1 (Tyr701) (58D6) Rabbit mAb detects endogenous levels of Stat1 only when phosphorylated at Tyr701; p91 Stat1 phosphorylated at Tyr701 and the p84 splice variant will also be detected by this antibody. It does not cross-react with the corresponding phospho-tyrosines of other Stat proteins. Phospho-Stat3 (Tyr705) (D3A7) XP® Rabbit mAb detects endogenous levels of Stat3 only when phosphorylated at Tyr705. This antibody does not cross-react with phospho-EGFR or the corresponding phospho-tyrosines of other Stat proteins. Phospho-Stat5 (Tyr694) (C11C5) Rabbit mAb detects endogenous Stat5a only when phosphorylated at Tyr694 and Stat5b when phosphorylated at Tyr699.
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Tyr701 of human Stat1, Tyr705 of mouse Stat3, or Tyr694 of Stat5a.
Immunohistochemical analysis of paraffin-embedded HeLa cell pellets, untreated (left), treated with Human Interferon-α1 (hIFN-α1) #8927 (middle), or treated with Human Epidermal Growth Factor (hEGF) #8916 (right), using Phospho-Stat1 (Tyr701) (58D6) Rabbit mAb #9167 (upper), Phospho-Stat3 (Tyr705) (D3A7) XP® Rabbit mAb #9145 (middle), or Phospho-Stat5 (Tyr694) (C11C5) Rabbit mAb #9359 (lower).
Stat proteins serve as transcription factors in growth and survival pathways stimulated by growth factor and cytokine activation of receptor proteins. Receptor activation promotes tyrosine phosphorylation of Stat proteins, resulting in Stat dimerization and translocation to the nucleus where they regulate expression of numerous proteins that control cell growth, survival, differentiation and pathogen resistance (1). Stat1 is essential in IFN-α and IFN-γ stimulated pathways and is abnormally activated in many tumors (2,3). Both Stat1α (91 kDa) and Stat1β (84 kDa) isoforms are activated by IFN-α but only Stat1α responds to IFN-γ. Phosphorylation of Stat1 at Tyr701 induces Stat1 dimerization, nuclear translocation and DNA binding (4). Transcription factor Stat3 possesses oncogenic potential and anti-apoptotic activities; a number of human tumors display constitutively activated Stat3 (5,6). Activation of Stat3 follows phosphorylation at Tyr705, resulting in dimerization, nuclear translocation and DNA binding (7). Expression of Stat3α (86 kDa) and Stat3β (79 kDa) isoforms correlates with cell type, ligand and cell maturation stage (8). Phosphorylation of Stat5a at Tyr694 is essential for transcription factor activation (9). Stat5 is activated by interleukins and other cytokines (i.e. CSF1); presence of phosphorylated Stat5 is in some IL-3-treated cells suggests a role in angiogenesis and cell motility (10). Altered Stat5 expression and activity is associated with abnormal cell proliferation and apoptosis in some forms of leukemia (11).
- Ihle, J.N. (2001) Curr Opin Cell Biol 13, 211-7.
- Bromberg, J. (2002) J Clin Invest 109, 1139-42.
- Frank, D.A. (1999) Mol Med 5, 432-56.
- Ihle, J.N. et al. (1994) Trends Biochem Sci 19, 222-7.
- Garcia, R. and Jove, R. (1998) J Biomed Sci 5, 79-85.
- Catlett-Falcone, R. et al. (1999) Immunity 10, 105-15.
- Darnell, J.E. (1997) Science 277, 1630-5.
- Biethahn, S. et al. (1999) Exp Hematol 27, 885-94.
- Gouilleux, F. et al. (1994) EMBO J 13, 4361-9.
- Buitenhuis, M. et al. (2004) Int J Biochem Cell Biol 36, 2120-4.
- Baśkiewicz-Masiuk, M. et al. (2003) Cell Prolif 36, 265-78.
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- 3900 Rabbit (DA1E) mAb IgG XP® Isotype Control
- 9167 Phospho-Stat1 (Tyr701) (58D6) Rabbit mAb
- 9145 Phospho-Stat3 (Tyr705) (D3A7) XP® Rabbit mAb
- 9359 Phospho-Stat5 (Tyr694) (C11C5) Rabbit mAb
- 8105 SignalSlide® Phospho-Stat1/3/5 IHC Controls
- 8112 SignalStain® Antibody Diluent
- 1038 Phospho-Stat1 (Tyr701) Blocking Peptide
- 1195 Phospho-Stat3 (Tyr705) Blocking Peptide
For Research Use Only. Not For Use In Diagnostic Procedures.
SignalStain® is a trademark of Cell Signaling Technology, Inc.
Cell Signaling Technology® is a trademark of Cell Signaling Technology, Inc.
Select rabbit monoclonal antibodies are developed, validated, and produced at CST using in part technology under license (granting certain rights including those under U.S. Patents No. 5,675,063 and in some instances 7,429,487) from Epitomics, Inc.