• 提示：详情请下载说明书。

• 产品描述： TAS-102 is a novel oral combination drug containing trifluridine (TFT) and Tipiracil hydrochloride (TTP) in a molar ratio of 2:1.

• 靶点： DNA/RNA Synthesis;Nucleoside Antimetabolite/Analog;NucleosideAntimetabolite/Analog; DNA/RNASynthesis

• 体外研究：
  TAS-102 is an oral combination drug consisting of trifluridine (FTD), which is a thymidine-based nucleoside analog, and tipiracil hydrochloride (TPI), which improves the bioavailability of FTD by inhibiting its catabolism by thymidine phosphorylase (TP). Phosphorylated form of trifluridine is incorporated into DNA resulting in DNA dysfunction and cell cycle arrest. Thymidine phosphorylase inhibitor inhibits degradation of FTD and inhibits angiogenesis. Thus, TAS-102 treatment results in massive trifluridine incorporation into DNA and in activation of similar DNA damage response pathways, which involve phosphorylation of Chk1 and cycle arrest during the G2/M-phase

• 体内研究：
  The elimination half-life of FTD after intravenous administration to humans is very rapid (18 minutes), due to the rapid degradation of FTD to its major metabolite, 5-trifluoromethyl-2,4(1H,3H)-pyrimidinedione. In monkeys, the plasma FTD level after oral administration alone is very low, suggesting extensive first-pass metabolism by the liver and intestine TPase. However, the addition of TPI(tipiracil hydrochloride) is found to enable oral administration. By inhibiting TP, TPI inhibits the degradation of FTD in the liver and intestines following oral administration and thereby improves its bioavailability. The TP enzyme catalyzes the phosphorolysis of pyrimidine 2'-deoxynucleosides such as FTD. Studies using human CRC tumor xenografts in mice determine that the maximum antitumor activity is achieved with a 1:0.5 molar ratio, and studies in mice and monkeys show that the maximum plasma concentration of FTD is almost achieved with the same ratio. Moreover, this ratio produces a favorable balance between antitumor activity and toxicity. Lower toxicity in mice is observed with TPI coadministration than with FTD alone. TAS-102 (FTD) can overcome acquired resistance to 5-FU because the main mechanism of TAS-102 is not associated with main metabolic enzymes of 5-FU, such as TS and OPRT. TAS-102 has demonstrated efficacy in 5-FU-refractory cancers

• 参考文献：
  1. Nukatsuka M, et al. Efficacy of Combination Chemotherapy Using a Novel Oral Chemotherapeutic Agent, TAS-102, with Oxaliplatin on Human Colorectal and Gastric Cancer Xenografts. Anticancer Res. 2015, 35(9):4605-15. 2. Lenz HJ, et al. TAS-102, a novel antitumor agent: a review of the mechanism of action. Cancer Treat Rev. 2015, 41(9):777-83.

• 溶解性： Soluble  in  DMSO、Ethanol

• 保存条件： -20°C;充氩

• 配置溶液浓度参考：
  

  	1mg	5mg	10mg
  1 mM	2.295 ml	11.474 ml	22.948 ml
  5 mM	0.459 ml	2.295 ml	4.59 ml
  10 mM	0.229 ml	1.147 ml	2.295 ml
  50 mM	0.046 ml	0.229 ml	0.459 ml

• 注意：部分产品我司仅能提供部分信息，我司不保证所提供信息的权威性，仅供客户参考交流研究之用。

输入产品批号：

本计算器可帮助您计算出特定溶液中溶质的质量、溶液浓度和体积之间的关系，公式为：

质量 (mg) = 浓度 (mM) x 体积 (mL) x 分子摩尔量 (g/mol)

• pg ng μg mg g kg =
  fM pM nM μM mM M *
  nL μL mL L *