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.
TCR Screening Services
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".
Purified / Lyophilized / Biologically Active / Endotoxin Level: Less than 0.2 EU/µg protein (determined by LAL method).
8.4 kDa (SDS-PAGE)
I-TAC (Interferon-inducible T-cell a Chemoattractant), also known as CXCL11, is a chemokine belonging to the CXCL subfamily. Along with Interferon-? induced Protein 10 kDa and Monokine Induced by Interferon-?, I-TAC is strongly up-regulated by Interferon-? and binds to the G-protein coupled receptor CXCR3. The expression of CXCR3 is associated with Th1-mediated immune responses and mediates chemotaxis of Th1 cells. I-TAC induces, maintains, and amplifies the inflammatory reactions, and sustains chronic immune responses against self-antigens. Although CXCR3 was thought to be the exclusive receptor of I-TAC initially, more evidence has shown that I-TAC can also bind to CXCR4 and CXCR7, and that I-TAC plays important roles in tumor development and angiostasis. Recombinant human I-TAC/CXCL11 (rhI-TAC) produced in E. coli is a single non-glycosylated polypeptide chain containing 74 amino acids. A fully biologically active molecule, rhI-TAC has a molecular mass of 8.4 kDa analyzed by reducing SDS-PAGE and is obtained by chromatographic techniques.
Greater than 95% by SDS-PAGE and HPLC
ED50 < 2.5 µg/mL, as determined by the FLIPR assay using CHO cells transfected with human CXCR3, the receptor of human CXCL11, corresponding to a specific activity of > 400 units/mg.
Less than 0.2 EU/µg protein (determined by LAL method).
Lyophilized from PBS.
Stable at -80°c for up to 6 months. Upon reconstitution, store at 4°c for up to 2 weeks or at -20°c for up to 3 months.
Chemokines are a group of small (approximately 8 to 14 kD), mostly basic, structurally related molecules that regulate cell trafficking of various types of leukocytes through interactions with a subset of 7-transmembrane, G protein-coupled receptors. Chemokines also play fundamental roles in the development, homeostasis, and function of the immune system, and they have effects on cells of the central nervous system as well as on endothelial cells involved in angiogenesis or angiostasis.