Description

Product Description

Doxifluridine is a fluorinated pyrimidine nucleoside analog developed for laboratory research to explore anticancer mechanisms, DNA replication inhibition, and nucleotide metabolism. As a prodrug of 5-fluorouracil, doxifluridine undergoes intracellular enzymatic conversion to release 5-FU, which is subsequently phosphorylated to its active nucleotide forms. These metabolites incorporate into RNA and DNA, disrupt nucleic acid synthesis, and inhibit thymidylate synthase, leading to S-phase cell cycle arrest and apoptotic pathways activation.

Researchers utilize doxifluridine to investigate the cellular response to nucleotide pool imbalance, DNA damage, and replication stress in various tumor cell lines. Its fluorinated structure enhances lipophilicity and oral bioavailability in vivo, but in laboratory research, it provides a controlled model for studying 5-FU-related cytotoxicity without direct administration of 5-FU. This makes it a valuable tool for mechanistic studies on drug metabolism, enzyme activation, and tumor cell sensitivity.

Experimental studies demonstrate that doxifluridine can modulate gene expression related to DNA repair, apoptosis, and nucleotide metabolism. Its activity is observed in both rapidly proliferating cancer cells and in models simulating chemotherapeutic resistance. By providing a controlled release of 5-FU intracellularly, doxifluridine offers insights into prodrug activation pathways and intracellular enzymatic kinetics, crucial for understanding fluoropyrimidine pharmacology at the cellular level.

Doxifluridine is widely employed in combination studies with DNA repair inhibitors, targeted small molecules, or other nucleoside analogs. This enables researchers to explore potential synergistic cytotoxicity, resistance mechanisms, and pharmacodynamic interactions. Its reproducibility in controlled laboratory assays makes it suitable for high-throughput screening and preclinical mechanistic research.

The compound’s chemical stability, ease of handling, and high purity allow for precise experimental design. Proper storage under low-temperature conditions and protection from light ensures retention of its biochemical integrity, supporting consistent and reliable laboratory results.

Product Specifications

Mechanism of Action

Doxifluridine functions as a prodrug of 5-fluorouracil (5-FU) and primarily exerts its activity through nucleotide metabolism interference:

1. Intracellular Conversion and Metabolism
   Doxifluridine is metabolized by intracellular enzymes, including thymidine phosphorylase, to release 5-FU. The released 5-FU is phosphorylated to active metabolites: 5-fluorodeoxyuridine monophosphate (FdUMP), 5-fluorouridine triphosphate (FUTP), and 5-fluorodeoxyuridine triphosphate (FdUTP). These active metabolites incorporate into RNA and DNA, disrupting nucleic acid function.

2. Thymidylate Synthase Inhibition
   FdUMP forms a stable ternary complex with thymidylate synthase (TS) and 5,10-methylenetetrahydrofolate, leading to irreversible inhibition of dTMP synthesis. This depletion of thymidine triphosphate pools halts DNA replication, particularly affecting rapidly proliferating cancer cells.

3. RNA and DNA Incorporation
   FUTP incorporates into RNA, causing defective RNA processing and protein synthesis. FdUTP incorporation into DNA induces strand breaks and triggers DNA repair pathways. This dual incorporation enhances cytotoxic effects and contributes to S-phase arrest.

4. Apoptosis Induction
   DNA damage and replication stress activate both p53-dependent and independent apoptotic pathways. Caspase activation, mitochondrial membrane depolarization, and chromatin condensation occur, leading to programmed cell death in susceptible tumor cell lines.

5. Synergistic Mechanisms
   In research, doxifluridine is often combined with other chemotherapeutics, DNA repair inhibitors, or signal transduction modulators to study potential synergistic cytotoxicity, drug resistance, and enhanced apoptosis induction.

6. Research Implications
   Doxifluridine provides a model for studying prodrug activation, enzyme kinetics, nucleotide pool imbalance, and tumor cell sensitivity to fluoropyrimidine-based treatments, facilitating mechanistic investigations and preclinical screening.

   

Side Effects

In laboratory research, doxifluridine demonstrates concentration-dependent cytotoxicity. Key considerations include:

• Cellular Toxicity: Dose-dependent apoptosis and S-phase arrest in rapidly proliferating tumor cell lines.

• DNA Damage: Incorporation into DNA can induce strand breaks, which is leveraged in mechanistic studies.

• RNA Disruption: Interference with RNA processing and protein synthesis may affect normal cell cultures at high concentrations.

• Safety Handling: Researchers must use proper PPE, avoid inhalation or skin contact, and adhere to institutional chemical safety protocols.

• Storage Considerations: Protect from light, moisture, and high temperatures to maintain biochemical integrity.

• Usage Limitation: For laboratory research only; not intended for therapeutic use.

Keywords

Doxifluridine, 5′-Deoxy-5-fluorouridine, nucleoside analog, DNA synthesis inhibitor, cancer research, apoptosis, laboratory research chemical, high-purity nucleoside, preclinical cytotoxicity, tumor cell studies, research compound supplier.

Shipping Guarantee

All shipments are handled using validated cold-chain logistics to preserve compound integrity. Each package is sealed in moisture-proof containers with secondary protective wrapping and continuous temperature monitoring. Products are shipped via express international couriers with full tracking and insurance coverage.

Trade Assurance

We ensure product authenticity, verified ≥99% purity, and compliance with analytical standards (HPLC, MS, NMR). Each batch is supplied with a Certificate of Analysis (CoA). Our trade assurance policy guarantees replacement or refund for any deviation from listed specifications.

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Disclaimer

All products listed are intended for laboratory research use only and not for human or veterinary use. They are not drugs, medical devices, or diagnostics and should not be administered to humans or animals. Researchers must handle all materials in accordance with institutional biosafety and chemical safety guidelines. The information provided is for scientific reference only and does not imply therapeutic efficacy, safety, or regulatory approval.