Rat GM-CSF Antibody

Catalog #: AF518 Datasheet

Catalog #	Availability	Size / Price	Qty
AF518
AF518-SP

Cell Proliferation Induced by GM‑CSF and Neutralization by Rat GM‑CSF Antibody.

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Rat GM-CSF Antibody Summary

Species Reactivity

Rat

Specificity

Detects rat GM-CSF in direct ELISAs and Western blot. In direct ELISAs, approximately 100% cross-reactivity with recombinant feline GM-CSF and recombinant porcine GM-CSF is observed, approximately 30% cross-reactivity with recombinant mouse GM‑CSF, recombinant canine GM-CSF and recombinant human GM‑CSF is observed.

Source

Polyclonal Goat IgG

Purification

Antigen Affinity-purified

Immunogen

E. coli-derived recombinant rat GM-CSF (R&D Systems, Catalog # 518-GM)
Ala1-Lys127
Accession # P48750

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.

Applications

Recommended Concentration

Sample

Western Blot

0.1 µg/mL

Recombinant Rat GM-CSF (Catalog # 518-GM)

Neutralization

Measured by its ability to neutralize GM‑CSF-induced proliferation in the DA3 mouse myeloma cell line. The Neutralization Dose (ND₅₀) is typically 0.1-0.6 ug/mL in the presence of 0.25 ng/mL Recombinant Rat GM‑CSF.

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

Neutralization

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Cell Proliferation Induced by GM‑CSF and Neutralization by Rat GM‑CSF Antibody. Recombinant Rat GM-CSF induces proliferation in the DA3 mouse myeloma cell line in a dose-dependent manner (orange line), as measured by the Resazurin (Catalog # AR002). Under these conditions, proliferation elicited by rrGM-CSF is neutralized (green line) by increasing concentrations of Goat Anti-Rat GM-CSF Antigen Affinity-purified Polyclonal Antibody (Catalog # AF518). The ND₅₀ is typically 0.1-0.6 ug/mL.

Preparation and Storage

Reconstitution

Reconstitute at 0.2 mg/mL in sterile PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

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: GM-CSF

GM-CSF was initially characterized as a factor that can support the in vitro colony formation of granulocyte-macrophage progenitors. It is also a growth factor for erythroid, megakaryocyte, and eosinophil progenitors. GM-CSF is produced by a number of different cell types (including T cells, B cells, macrophages, mast cells, endothelial cells, fibroblasts, and adipocytes) in response to cytokine or inflammatory stimuli. On mature hematopoietic cells, GM-CSF is a survival factor for and activates the effector functions of granulocytes, monocytes/macrophages, and eosinophils. GM-CSF promotes a Th1 biased immune response, angiogenesis, allergic inflammation, and the development of autoimmunity. It shows clinical effectiveness in ameliorating chemotherapy-induced neutropenia, and GM-CSF transfected tumor cells are utilized as cancer vaccines. The 22 kDa glycosylated GM-CSF, similar to IL‑3 and IL‑5, is a cytokine with a core of four bundled alpha ‑helices. Mature rat GM-CSF shares 56-69% amino acid sequence identity with canine, feline, human, mouse, and porcine GM‑CSF. GM‑CSF exerts its biological effects through a heterodimeric receptor complex composed of GM‑CSF R alpha /CD116 and the signal transducing common beta chain (CD131) which is also a component of the high-affinity receptors for IL-3 and IL-5. In addition, GM-CSF binds a naturally occurring soluble form of GM‑CSF R alpha. Rat GM‑CSF is active on mouse cells, although mouse GM‑CSF is only weakly active on rat cells.

Long Name

Granulocyte Macrophage Growth Factor

Entrez Gene IDs

1437 (Human); 12981 (Mouse); 116630 (Rat); 397208 (Porcine); 403923 (Canine); 493805 (Feline)

Alternate Names

colony stimulating factor 2 (granulocyte-macrophage); Colony-stimulating factor; CSF; CSF2; CSF-2; GMCSF; GM-CSF; GMCSFgranulocyte-macrophage colony-stimulating factor; granulocyte-macrophage colony stimulating factor; MGC131935; MGC138897; Molgramostim; molgramostin; Sargramostim