Human FGF-4 Antibody

Catalog #: AB-235-NA Datasheet

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AB-235-NA

Cell Proliferation Induced by FGF‑4 and Neutralization by Human FGF‑4 Antibody.

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Human FGF-4 Antibody Summary

Species Reactivity

Human

Specificity

Detects human FGF‑4 in direct ELISAs and Western blots. In direct ELISAs, less than 50% cross-reactivity with recombinant mouse FGF-4 is observed, and less than 15% cross‑reactivity with recombinant human (rh) FGF-6 is observed. It will not neutralize the biological activity of bovine FGF acidic, rhFGF acidic, bovine FGF basic, rhFGF basic, rhFGF-5, rhFGF-6, or rh beta -ECGF.

Source

Polyclonal Goat IgG

Purification

Protein A or G purified

Immunogen

E. coli-derived recombinant human FGF-4
Ala31-Leu206
Accession # P08620

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.

Endotoxin Level

<0.10 EU per 1 μg of the antibody by the LAL method.

Applications

Recommended Concentration

Sample

Western Blot

1 µg/mL

Recombinant Human FGF‑4 (Catalog # 235-F4)

Neutralization

Measured by its ability to neutralize FGF‑4-induced proliferation in the NR6R‑3T3 mouse fibroblast cell line. Rizzino, A. et al. (1988) Cancer Res. 48:4266. The Neutralization Dose (ND₅₀) is typically 6-9 µg/mL in the presence of 0.5 ng/mL Recombinant Human FGF‑4.

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 FGF‑4 and Neutralization by Human FGF‑4 Antibody. Recombinant Human FGF-4 (Catalog # 235-F4) stimulates proliferation in the NR6R-3T3 mouse fibroblast cell line in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Human FGF-4 (0.5 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Human FGF-4 Polyclonal Antibody (Catalog # AB-235-NA). The ND₅₀ is typically 6-9 µg/mL.

Preparation and Storage

Reconstitution

Reconstitute at 1 mg/mL in sterile PBS.

Shipping

The product is shipped at ambient temperature. Upon receipt, store it 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: FGF-4

FGF-4, the product of a developmentally regulated gene (hst-1), is a member of the FGF family that is efficiently secreted. The gene for FGF-4 (also known as FGFK or K-FGF for Kaposi sarcoma-associated FGF) was initially discovered as a transforming gene by the NIH-3T3 focus formation assay using DNA derived from human tumors (including stomach and colon cancers, hepatocellular carcinomas, and Kaposi’s sarcomas). FGF-4 does not seem to be expressed in normal adult tissues. However, expression of the gene is spatially and temporally regulated during embryonic development. The murine homologue of human FGF-4 has been cloned and shown to be 82% homologous to the human protein at the amino acid sequence level. Human FGF-4 has been shown to exhibit cross species activity.

In vitro, FGF-4 is mitogenic for fibroblasts and endothelial cells. FGF-4 has been shown to be a potent angiogenesis promoter in vivo. FGF-4 has potent transforming potential apparently through an autocrine mechanism of action. FGF-4 plays a key role in limb development and has been identified as the molecular mediator of the activities of the apical ectodermal ridge that is required for directing the outgrowth and patterning of vertebrate limbs.

Long Name

Fibroblast Growth Factor 4

Entrez Gene IDs

2249 (Human); 14175 (Mouse); 116499 (Rat)

Alternate Names

FGF4; FGF-4; fibroblast growth factor 4; HBGF-4; HBGF-4Transforming protein KS3; heparin secretory transforming protein 1; Heparin secretory-transforming protein 1; Heparin-binding growth factor 4; HST-1; HST-1HSTF-1; HSTF1fibroblast growth factor 4 splice isoform; HSTFGF-4; human stomach cancer, transforming factor from FGF-related oncogene; kaposi sarcoma oncogene; KFGF; K-FGF; KS3; oncogene HST