Work with LifeSpan to design a custom immunohistochemistry to address your specific biological question. Outsource the entire localization process without having to
worry about finding and characterizing target specific antibodies, sourcing and validating difficult-to-find tissues, and having the ability to interpret the resulting
immunostaining in relation to complex human pathologies.
Test your therapeutic antibodies in immunohistochemistry against a broad panel of normal frozen human tissue types in order to determine potential unintended binding.
Our non-GLP TCR services are designed on the FDA recommendation outlined in their "Points to Consider in the Manufacture and Testing of Monoclonal Antibody Products for Human Use".
(applications tested for the base form of this product only)
STAT3 antibody was raised against bacterially expressed GST fusion protein corresponding to human STAT3 (aa688-722, RPESQEHPEADPGSAAPYLKTKFICVTPTTCSNTI). The immunizing sequence is identical in mouse and rat STAT3. The first 28 amino acids are identical to mouse STAT3B. Percent identity by BLAST analysis: Human, Gorilla, Orangutan, Gibbon, Monkey, Marmoset, Mouse, Rat, Hamster, Elephant, Panda, Bovine, Horse, Pig, Opossum (100%); Sheep (97%); Chicken (84%).
Recognizes STAT3 (92kD). A second unknown band at 50kD may be observed with longer exposures or at high concentrations of the antibody. Species cross-reactivity: Human, rat and mouse.
Suitable for use in Western Blot, Immunocytochemistry and Immunoprecipitation. Western Blot: 2-4 ug/ml detects STAT3 in RIPA lysates from EGF stimulated human A431 cells. EGF-stimulated A431 cell lysate was resolved by electrophoresis, transferred to nitrocellulose and probed with anti-STAT3 (2 ug/ml). Proteins were visualized using a goat anti-rabbit secondary antibody conjugated to HRP and a chemiluminescence detection system. Immunocytochemistry: 10 ug/ml shows positive immunostaining for STAT 3 in A431 cells fixed with 95% ethanol, 5% acetic acid. Immunoprecipitation: 4 ug immunoprecipitates STAT 3 from 500 ug of EGF-stimulated A431 RIPA lysate. Gel Shift Assay: This antibody supershifts.
0.1 M Tris-glycine, pH 7.4, 0.15 M sodium chloride, 0.05% sodium azide, 40% glycerol.
Short term: 4°C. Long term: Store at -20°C. Avoid freeze-thaw cycles.
STAT3 is a member of the STAT protein family. In response to cytokines and growth factors, STAT family members are phosphorylated by the receptor associated kinases, and then form homo- or heterodimers that translocate to the cell nucleus where they act as transcription activators. This protein is activated through phosphorylation in response to various cytokines and growth factors including IFNs, EGF, IL5, IL6, HGF, LIF and BMP2.