Overview of FGFR4 and Its Role in Disease Research

Fibroblast growth factor receptor 4 (FGFR4) is a receptor tyrosine kinase belonging to the FGFR family. Upon activation by fibroblast growth factors (FGFs), FGFR4 initiates downstream signaling cascades—including the RAS/MAPK, PI3K/AKT, and STAT3 pathways—that regulate cell proliferation, differentiation, metabolism, and survival.

Dysregulation or amplification of FGFR4 has been implicated in multiple malignancies, including hepatocellular carcinoma (HCC), breast cancer, and rhabdomyosarcoma. FGFR4 is therefore recognized as a clinically relevant therapeutic target, and selective inhibitors such as FGFR4-IN-1 are valuable tools for mechanistic and drug discovery research.

Compound Profile and Selectivity

FGFR4-IN-1 (Aladdin SKU: F656083; cross-referenced as MCE HY-100631) is a selective inhibitor designed to target FGFR4 with preference over other FGFR family members (FGFR1, FGFR2, FGFR3). This selectivity profile makes it particularly useful for researchers who need to dissect FGFR4-specific biology without confounding pan-FGFR effects.

Researchers should consult the current Certificate of Analysis (CoA) for confirmed purity, molecular weight, and potency data. Specific IC₅₀ values and kinome selectivity data should be verified against primary literature and the supplier CoA prior to experimental use.

Its small-molecule nature allows cell-permeant delivery in standard tissue-culture settings, enabling interrogation of FGFR4 activity in intact cells and relevant cancer cell lines.

Solubility, Reconstitution and Storage Guidelines

Proper handling of FGFR4-IN-1 is essential to maintain compound integrity and ensure reproducible experimental results. Follow the guidance below as a general framework, and always cross-check with the product CoA and SDS for compound-specific parameters.

• Solubility: FGFR4-IN-1 is typically soluble in dimethyl sulfoxide (DMSO) at ≥10 mM. Solubility in aqueous buffers is generally low; prepare stock solutions in DMSO and dilute into culture medium immediately before use. Ensure final DMSO concentration in assay wells does not exceed 0.1–0.5% v/v to avoid cytotoxic artefacts.
• Stock preparation: Prepare concentrated DMSO stocks, aliquot to minimize freeze-thaw cycles, and store under inert atmosphere where possible.
• Storage conditions: Store at −20 °C in a tightly sealed container, protected from light and moisture. Verify recommended temperature with the CoA supplied with each lot.
• Stability: Avoid repeated freeze-thaw cycles. Use aliquots within the validated timeframe stated on the CoA.

Experimental Application and Dosing Considerations

FGFR4-IN-1 is intended for in vitro research use. The following considerations support optimal experimental design:

• Cell line selection: Cell lines with documented FGFR4 overexpression or mutation (e.g., certain HCC or breast cancer lines) are appropriate model systems. Confirm FGFR4 expression status in your chosen model prior to inhibitor treatment.
• Concentration range: Conduct dose-response experiments to establish inhibitory concentrations empirically in your cell system. Avoid relying solely on literature IC₅₀ values without cell-type validation.
• Controls: Include vehicle (DMSO) controls matched in concentration to the highest inhibitor dose. Where possible, include a positive control inhibitor or genetic knockdown of FGFR4 to confirm pathway specificity.
• Readouts: Downstream markers of FGFR4 signaling (phospho-FRS2, phospho-ERK1/2, phospho-AKT) can serve as pharmacodynamic endpoints to confirm target engagement.
• Combination studies: If combining FGFR4-IN-1 with other agents, evaluate potential interactions and ensure vehicle compatibility.

This product is for research use only (RUO) and is not intended for clinical, diagnostic, or therapeutic applications in humans.

Quality, Ordering and Compliance

FGFR4-IN-1 (F656083) is available from Aladdin Scientific and is cross-referenced with MCE catalogue number HY-100631. Each lot is accompanied by a Certificate of Analysis (CoA) documenting purity (typically assessed by HPLC), identity (confirmed by NMR and/or MS), and storage recommendations.

Researchers and procurement teams should note:

• Request the lot-specific CoA at time of ordering or upon receipt to verify that compound specifications meet experimental requirements.
• Review the Safety Data Sheet (SDS) before handling to understand hazard classifications, personal protective equipment (PPE) requirements, and disposal procedures.
• Export control regulations may apply; consult your institution's compliance office if required.
• For volume pricing, custom packaging, or bulk orders, contact Aladdin Scientific technical sales.