Immersion fixed human peripheral blood mononuclear cells (PBMCs)
Measured by its ability to neutralize TSLP-induced proliferation in the BaF3 mouse pro‑B cell line co-transfected with human IL‑7 R alpha and TSLP R. The Neutralization Dose (ND50) is typically 1-5 µg/mL in the presence of 0.3 ng/mL Recombinant Human TSLP.
Please Note: Optimal dilutions should be determined by each laboratory for each application.
are available in the Technical Information section on our website.
Detection of Human TSLP R by Western Blot.
Western blot shows lysates of human liver tissue. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human TSLP R Antigen Affinity-purified Polyclonal Antibody (Catalog # AF981) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF019). A specific band was detected for TSLP R at approximately 50 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.
Detection of Human TSLP R by Western Blot.
Western blot shows lysates of NS0 mouse myeloma cell line either mock transfected or transfected with human TSLP R. PVDF membrane was probed with 0.2 µg/mL of Goat Anti-Human TSLP R Antigen Affinity-purified Polyclonal Antibody (Catalog # AF981) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF017). Specific bands were detected for TSLP R at approximately 45-60 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
TSLP R in Human Lymph Node.
TSLP R was detected in immersion fixed paraffin-embedded sections of human lymph node using Goat Anti-Human TSLP R Antigen Affinity-purified Polyclonal Antibody (Catalog # AF981) at 5 µg/mL overnight at 4 °C. Tissue was stained using the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). Specific staining was localized to the plasma membrane. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.
Cell Proliferation Induced by TSLP and Neutralization by Human TSLP R Antibody.
Recombinant Human TSLP (Catalog # 1398-TS) stimulates proliferation in the BaF3 mouse pro‑B cell line co-transfected with human IL‑7 R alpha and TSLP R in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Human TSLP (0.3 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Human TSLP R Antigen Affinity-purified Polyclonal Antibody (Catalog # AF981). The ND50 is typically 1‑5 µg/mL.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: TSLP R
TSLP R, also named Delta (1) and CRLM-2 (2) (cytokine receptor-like module-2), was originally cloned as a novel type 1 cytokine receptor with similarity to the common gamma chain. It was subsequently identified to be a subunit of the cellular receptor for the IL-7-like cytokine TSLP and termed TSLP R (3). The human TSLP R cDNA encodes a 371 amino acid (aa) residue type 1 membrane protein with a 22 aa residue signal peptide, a 210 aa residue extracellular domain, a 20 aa residue transmembrane domain, and a 119 aa residue cytoplasmic domain (4, 5). The extracellular region contains two fibronectin type III-like domains and a WSXWS‑like motif. The cytoplasmic domain contains a membrane-proximal box 1 motif that is known to be important for association with JAKs (4). Human TSLP R displays 39% identity to mouse TSLP R and 24% identity to the common gamma receptor (4). An alternatively spliced mRNA variant encoding a soluble TSLP R has also been reported in mouse (2). TSLP R expression is ubiquitous in the immune and hematopoietic cells, but is up-regulated in Th2-skewed cells. Cells expressing TSLP R alone bind TSLP with low affinity. Co-expression of TSLP R and IL-7 R alpha is required for high-affinity TSLP binding and signal transduction (3-6). The TSLP R and IL-7 R alpha are coexpressed primarily on monocytes and dendritic cells and at lower levels in lymphoid cells. TSLP has been shown to induce the release of T cell‑attracting chemokines from monocytes and enhance the maturation of CD11c+ dendritic cells (5).
Fujio, K. et al. (2000) Blood 95:2204.
Hiroyama, T. et al. (2000) Biochem. Biophys. Res. Commun. 272:224.
Park, L.S. et al. (2000) J. Exp. Med. 192:659.
Tonozuka, Y. et al. (2001) Cytogenet. Cell Genet. 93:23.
R&D Systems personnel manually curate a database that contains references using R&D Systems products.
The data collected includes not only links to publications in PubMed,
but also provides information about sample types, species, and experimental conditions.
Submit a review and receive a $25US/€18/£15/$25CAN amazon gift card if you include an image - $10US/€7/£6/$10CAN Amazon card for reviews without an image. Limited to verified customers in USA, Canada and Europe.