Human FGF-4 Antibody

Catalog # Availability Size / Price Qty
Cell Proliferation Induced by FGF‑4 and Neutralization by Human FGF‑4 Antibody.
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Product Details
Supplemental Products

Human FGF-4 Antibody Summary

Species Reactivity
Detects human FGF‑4 in direct ELISAs and Western blots. In direct ELISAs, approximately 20% cross-reactivity with recombinant human (rh) FGF-6 is observed and less than 2% cross-reactivity with bovine FGF acidic, bovine FGF basic, rhFGF acidic, rhFGF basic, rh beta ‑ECGF, rhFGF-5, rhFGF‑7, rhFGF‑8b, recombinant mouse (rm) FGF‑8b, rmFGF‑8c, and rhFGF‑10 is observed.
Polyclonal Goat IgG
Antigen Affinity-purified
E. coli-derived recombinant human FGF-4
Accession # P08620
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.


Recommended Concentration
Western Blot
0.1 µg/mL
Recombinant Human FGF‑4 (Catalog # 235-F4)
5-15 µg/mL
See below
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 0.3-0.9 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 Cell Proliferation Induced by FGF‑4 and Neutralization by Human FGF‑4 Antibody. View Larger

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 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF235). The ND50 is typically 0.3-0.9 µg/mL.

Immunohistochemistry FGF-4 antibody in Human Breast Cancer Tissue by Immunohistochemistry (IHC-P). View Larger

FGF‑4 in Human Breast Cancer Tissue. FGF‑4 was detected in immersion fixed paraffin-embedded sections of human breast cancer tissue using Goat Anti-Human FGF‑4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF235) at 15 µg/mL overnight at 4 °C. Before incubation with the primary antibody tissue was subjected to heat-induced epitope retrieval using Antigen Retrieval Reagent-Basic (Catalog # CTS013). Tissue was stained using the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.

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.


Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
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: 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

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Isotype Controls

Reconstitution Buffers

Secondary Antibodies

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