2'-デオキシ-5-フルオロシチジン 化学特性,用途語,生産方法
外観
白色～ほとんど白色粉末～結晶
説明
5-Fluoro-2-Deoxycytidine is an antimetabolite consisting of a fluorinated pyrimidine analog with potential antineoplastic activity. As a prodrug, 5-fluoro-2-deoxycytidine is converted by intracellular deaminases to the cytotoxic agent 5-Fluorouracil (5-FU). 5-FU is subsequently metabolized to active metabolites including 5-fluoro-2-deoxyuridine monophosphate (FdUMP) and 5-fluorouridine triphosphate (FUTP). FdUMP binds to and inhibits thymidylate synthase, thereby reducing the production of thymidine monophosphate, which leads to depletion of thymidine triphosphate. This inhibits DNA synthesis and cell division. FUTP competes with uridine triphosphate for incorporation into the RNA strand thus leading to an inhibition of RNA and protein synthesis. Other fluorouracil metabolites also get incorporated into both DNA and RNA, thereby further hampering cellular growth.
使用
5-fluoro-2'-deoxycytidine has been used in trials studying the treatment of Neoplasms, Lung Neoplasms, Breast Neoplasms, Head and Neck Neoplasms, and Urinary Bladder Neoplasms, among others.
一般的な説明
Fine white powder.
空気と水の反応
2'-DEOXY-5-FLUOROCYTIDINE is probably light and air sensitive.
健康ハザード
ACUTE/CHRONIC HAZARDS: When heated to decomposition 2'-DEOXY-5-FLUOROCYTIDINE emits toxic fumes of fluoride ion and NOx.
火災危険
Flash point data for 2'-DEOXY-5-FLUOROCYTIDINE are not available. 2'-DEOXY-5-FLUOROCYTIDINE is probably combustible.
薬理学
5-Fluoro-2'-deoxycytidine (FdCyd), a fluoropyrimidine nucleoside analog, has a short (10-minute) half-life and is rapidly degraded in vivo by cytidine deaminase. However, coadministration with tetrahydrouridine (THU), an inhibitor of cytidine/deoxycytidine deaminase, has been shown to increase the AUC of the parent compound more than 4-fold. Increased FdCyd exposure allows it to be taken up intracellularly and converted to its triphosphate, which is incorporated into DNA and inhibits the action of the enzyme DNA methyltransferase (DNMT). Inhibition of DNMT, and in turn DNA methylation, can result in the re-expression of tumor suppressor genes.
Primary objective:
-Determine progression-free survival (PFS) and/or the response rate (CR + PR) of FdCyd administered 5 days per week for 2 weeks, in 28-day cycles, by intravenous infusion over 3 hours along with THU in patients with breast cancer, head and neck cancer, non-small cell lung cancer, and urothelial transitional cell carcinoma.
Exploratory objectives:
Evaluate whether treatment with FdCyd and THU alters DNA methylation patterns in tumor biopsy samples before and during treatment by LINE-1 analysis.
Evaluate the safety and tolerability of FdCyd (100 mg/m(2)) + THU (350 mg/m(2)) administered 5 days per week for 2 weeks, in 28-day cycles, by intravenous infusion over 3 hours.
Measure changes in the number of CTCs following treatment with FdCyd plus THU.
臨床応用
A DNA methyltransferase inhibitor currently in clinical trials for breast cancer and other solid tumors. Like 5’-Azacytidine and decitabine, 2’-Deoxy-5-fluorocytidine is a pyrimidine analog that integrates into chromatin to inhibit DNA methylation. It blocks proliferation in colon cancer-derived HCT116 cells by activating DNA response pathways. It inhibits various strains of pathogenic avian influenza viruses in vitro and in vivo.
2'-デオキシ-5-フルオロシチジン 上流と下流の製品情報
原材料
準備製品