Human IL-3 Antibody

Catalog # Availability Size / Price Qty
AF-203-NA
AF-203-SP
IL‑3 in Human PBMCs.
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Product Details
Citations (3)
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Human IL-3 Antibody Summary

Species Reactivity
Human
Specificity
Detects human IL‑3 in direct ELISAs and Western blots.
Source
Polyclonal Goat IgG
Purification
Antigen Affinity-purified
Immunogen
E. coli-derived recombinant human IL-3
Ala20-Phe152
Accession # Q6GS87
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Endotoxin Level
<0.10 EU per 1 μg of the antibody by the LAL method.
Label
Unconjugated

Applications

Recommended Concentration
Sample
Western Blot
0.1 µg/mL
Recombinant Human IL‑3 (Catalog # 203-IL)
Immunocytochemistry
5-15 µg/mL
Immersion fixed human peripheral blood mononuclear cells (PBMCs)
Neutralization
Measured by its ability to neutralize IL‑3-induced proliferation in the TF‑1 human erythroleukemic cell line. Kitamura, T. et al. (1989) J. Cell Physiol. 140:323. The Neutralization Dose (ND50) is typically 0.05-0.25 µg/mL in the presence of 1.25 ng/mL Recombinant Human IL‑3.

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Immunocytochemistry View Larger

IL‑3 in Human PBMCs. IL‑3 was detected in immersion fixed human peripheral blood mononuclear cells (PBMCs) (positive staining) and HL‑60 human acute promyelocytic leukemia cell line (negative staining) using Goat Anti-Human IL‑3 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF-203-NA) at 15 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red; NL001) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm. Staining was performed using our protocol for Fluorescent ICC Staining of Non-adherent Cells.

Neutralization Cell Proliferation Induced by IL‑3 and Neutralization by Human IL‑3 Antibody. View Larger

Cell Proliferation Induced by IL‑3 and Neutralization by Human IL‑3 Antibody. Recombinant Human IL-3 (203-IL) stimulates proliferation in the TF-1 human erythroleukemic cell line in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Human IL-3 (1.25 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Human IL-3 Antigen Affinity-purified Polyclonal Anti-body (Catalog # AF-203-NA). The ND50 is typically 0.05-0.25 µg/mL.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Preparation and Storage

Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS.
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Shipping
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: IL-3

Interleukin 3 is a pleiotropic factor produced primarily by activated T cells that can stimulate the proliferation and differentiation of pluripotent hematopoietic stem cells as well as various lineage committed progenitors. In addition, IL-3 also affects the functional activity of mature mast cells, basophils, eosinophils and macrophages. Because of its multiple functions and targets, it was originally studied under different names, including mast cell growth factor, P-cell stimulating factor, burst promoting activity, multi-colony stimulating factor, thy-1 inducing factor and WEHI-3 growth factor. In addition to activated T cells, other cell types such as human thymic epithelial cells, activated murine mast cells, murine keratinocytes and neurons/astrocytes can also produce IL-3. At the amino acid sequence level, mature human and murine IL-3 share only 29% sequence identity. Consistent with this lack of homology, IL-3 activity is highly species-specific and human IL-3 does not show activity on murine cells.

IL-3 exerts its biological activities through binding to specific cell surface receptors. The high affinity receptor responsible for IL-3 signaling is composed of at least two subunits, an IL-3 specific alpha chain which binds IL-3 with low affinity and a common beta chain that is shared by the IL-5 and GM-CSF high-affinity receptors. Although the beta chain itself does not bind IL-3, it confers high-affinity IL-3 binding in the presence of the  alpha chain. Receptors for IL-3 are present on bone marrow progenitors, macrophages, mast cells, eosinophils, megakaryocytes, basophils and various myeloid leukemic cells.

Long Name
Interleukin 3
Entrez Gene IDs
3562 (Human); 16187 (Mouse); 24495 (Rat)
Alternate Names
Hematopoietic growth factor; IL3; IL-3; IL-3MGC79398; interleukin 3 (colony-stimulating factor, multiple); interleukin-3; Mast cell growth factor; mast-cell growth factor; MCGF; MCGFMGC79399; MULTI-CSF; multilineage-colony-stimulating factor; Multipotential colony-stimulating factor; P-cell stimulating factor; P-cell-stimulating factor

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Citations for Human IL-3 Antibody

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.

3 Citations: Showing 1 - 3
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  1. CD123 targeting oncolytic adenoviruses suppress acute myeloid leukemia cell proliferation in vitro and in vivo.
    Authors: Li, G, Li, X, Wu, H, Yang, X, Zhang, Y, Chen, L, Wu, X, Cui, L, Wu, L, Luo, J, Liu, X Y
    Blood Cancer J, 2014-03-21;4(0):e194.
    Species: Human
    Sample Types: Cell Lysates
    Applications: Western Blot
  2. Human basophils activated by mast cell-derived IL-3 express retinaldehyde dehydrogenase-II and produce the immunoregulatory mediator retinoic acid.
    Authors: Spiegl N, Didichenko S, McCaffery P, Langen H, Dahinden CA
    Blood, 2008-05-21;112(9):3762-71.
    Species: Human
    Sample Types: Whole Cells
    Applications: Neutralization
  3. Secretory IgA induces antigen-independent eosinophil survival and cytokine production without inducing effector functions.
    Authors: Bartemes KR, Cooper KM, Drain KL, Kita H
    J. Allergy Clin. Immunol., 2005-10-01;116(4):827-35.
    Species: Human
    Sample Types: Whole Cells
    Applications: Neutralization

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