Product Pathways - PathScan ELISA
PathScan® Total Stat3 Sandwich ELISA Kit #7305
|7305C||1 Kit (96 assays)||---||In Stock||---|
|7305||carrier free and custom formulation / quantity||email request|
When ordering five or more kits, please contact us for processing time and pricing at firstname.lastname@example.org.
|Kit Includes||Volume||Solution Color|
|Stat3 Rabbit mAb Coated Microwells||1 Ea|
|Stat3 Mouse Detection mAb||1 Ea||Green (Lyophilized)|
|Anti-mouse IgG, HRP-linked Antibody (ELISA Formulated)||1 Ea||Red (Lyophilized)|
|Detection Antibody Diluent||11 ml||Green|
|HRP Diluent||11 ml||Red|
|TMB Substrate #7004||11 ml||Colorless|
|STOP Solution #7002||11 ml||Colorless|
|ELISA Wash Buffer (20X)||25 ml||Colorless|
|ELISA Sample Diluent||25 ml||Blue|
|Sealing Tape||2 sheets|
|Cell Lysis Buffer (10X) #9803||15 ml||Yellowish|
Note: 12 8-well modules – Each module is designed to break apart for 8 tests.
Storage: Kit should be stored at 4°C with the exception of Lysis Buffer, which is stored at –20°C (packaged separately).
|Human, Mouse, Rat, Monkey|
The PathScan® Total Stat3 Sandwich ELISA Kit is a solid phase sandwich enzyme-linked immunosorbent assay (ELISA) that detects endogenous levels of Stat3 protein. A Stat3 rabbit mAb has been coated onto the microwells. After incubation with cell lysates, Stat3 protein is captured by the coated antibody. Following extensive washing, a Stat3 mouse mAb is added to detect captured Stat3 protein. Anti-mouse IgG, HRP-linked Antibody is then used to recognize the bound detection antibody. HRP substrate, TMB, is added to develop color. The magnitude of the absorbance for this developed color is proportional to the quantity of Stat3 protein.
Antibodies in kit are custom formulations specific to kit.
Specificity / Sensitivity
PathScan® Total Stat3 Sandwich ELISA Kit detects endogenous levels of Stat3 protein in human cells, as shown in Figure 1. The kit sensitivity is shown in Figure 2. This kit detects proteins from the indicated species, as determined through in-house testing, but may also detect homologous proteins from other species.
ELISA - Western correlation
Figure 1: Treatment of A-431 cells with EGF stimulates phosphorylation of Stat3 at Ser727, as detected by PathScan® Phospho-Stat3 (Ser727) Sandwich ELISA Kit #7995, but does not affect levels of total Stat3 protein detected by PathScan® Total Stat3 Sandwich ELISA Kit #7305. The absorbance readings at 450 nm are shown in the top figure, while the corresponding western blots using Stat3 Antibody #9132 (left panel) or Phospho-Stat3 (Ser727) #9134 (right panel) is shown in the bottom figure.
The Stat3 transcription factor is an important signaling molecule for many cytokines and growth factor receptors (1) and is required for murine fetal development (2). Research studies have shown that Stat3 is constitutively activated in a number of human tumors (3,4) and possesses oncogenic potential (5) and anti-apoptotic activities (3). Stat3 is activated by phosphorylation at Tyr705, which induces dimerization, nuclear translocation, and DNA binding (6,7). Transcriptional activation seems to be regulated by phosphorylation at Ser727 through the MAPK or mTOR pathways (8,9). Stat3 isoform expression appears to reflect biological function as the relative expression levels of Stat3α (86 kDa) and Stat3β (79 kDa) depend on cell type, ligand exposure, or cell maturation stage (10). It is notable that Stat3β lacks the serine phosphorylation site within the carboxy-terminal transcriptional activation domain (8).
- Heim, M.H. (2001) J Recept Signal Transduct Res 19, 75-120.
- Takeda, K. et al. (1997) Proc Natl Acad Sci U S A 94, 3801-4.
- Catlett-Falcone, R. et al. (1999) Immunity 10, 105-15.
- Garcia, R. and Jove, R. (1998) J Biomed Sci 5, 79-85.
- Bromberg, J.F. et al. (1999) Cell 98, 295-303.
- Darnell, J.E. et al. (1994) Science 264, 1415-21.
- Ihle, J.N. (1995) Nature 377, 591-4.
- Wen, Z. et al. (1995) Cell 82, 241-50.
- Yokogami, K. et al. (2000) Curr Biol 10, 47-50.
- Biethahn, S. et al. (1999) Exp Hematol 27, 885-94.
Have you published research involving the use of our products? If so we'd love to hear about it. Please let us know!
- 9998 BSA
- 9803 Cell Lysis Buffer (10X)
- 7995 PathScan® Phospho-Stat3 (Ser727) Sandwich ELISA Kit
- 7300 PathScan® Phospho-Stat3 (Tyr705) Sandwich ELISA Kit
- 9808 Phosphate Buffered Saline (PBS-20X)
- 9809 Phosphate Buffered Saline with Tween® 20 (PBST-20X)
- 7002 STOP Solution
- 9139 Stat3 (124H6) Mouse mAb
- 4904 Stat3 (79D7) Rabbit mAb
- 12640 Stat3 (D3Z2G) Rabbit mAb
- 7004 TMB Substrate
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.
PathScan is a trademark of Cell Signaling Technology, Inc.
Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.