Tipifarnib (IND 58359) binds to and inhibits farnesyltransferase (FTase) with an IC₅₀ of 0.86 nM. Antineoplastic activity^[1].

IC50: 0.86 nM (FTase)

Tipifarnib inhibits the growth of H-Ras-transformed NIH 3T3 cells with an impressive IC₅₀ value of 1.7 nM ^[1].
Tipifarnib is a potent inhibitor of Trypanosoma Cruzi with the ED₅₀ of 4 nM^[1].
Combining Tipifarnib with 10 nM 4-OH-ICI 47699 in the presence of E2 reduces the IC₅₀ 8-fold from 400 to 50 nM^[2].
Tipifarnib inhibits isolated human farnesyltransferase for a lamin B peptide and for the K-RasB peptide with IC₅₀ of 0.86 nM and 7.9 nM, respectively^[3].
Tipifarnib shows inhibition of cell growth or angiogenesis, and induction of apoptosis in aggressive prostate cancer (PCa)^[4].
Tipifarnib shows a significant decrease in the concentration of exosomes in C4-2B cells both at 0.25 and 1 μM as well as in the PC-3 cells at 0.25 μM for 48 hours^[4].
Tipifarnib (1 μM) significantly inhibits the protein concentration of Alix, nSMase2, and Rab27a in C4-2B cells^[4].
Tipifarnib (0.25 μM) significantly inhibits the activation of p-ERK (downstream effector molecule of the Ras/Raf/ERK signaling pathway) but not total ERK in C4-2B and PC-3 cells but not in the normal RWPE-1 cells^[4].
Tipifarnib (0-250 nM) causes a dose-dependent decrease in Alix, nSMase2, and Rab27a in both C4-2B and PC-3 cells, but not in the RWPE-1 cells, Tipifarnib has the potential to be a potent inhibitor of exosome biogenesis and/or secretion^[4].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

Combined therapy with ICI 47699 and Tipifarnib (50 mg/kg, p.o.) produces greater tumor growth inhibition when compared with either drug alone. E2 deprivation and Tipifarnib in combination results in greater growth inhibition than either E2 deprivation or Tipifarnib alone. The combination of ICI 47699 and Tipifarnib results in significantly lower Ki-67 compared with either ICI 47699 or Tipifarnib alone. Tipifarnib alone also reduces the CTI compared with control. The combination of ICI 47699 and Tipifarnib or Tipifarnib coupled with E2 withdrawal is most effective at lowering the CTI (0.8 and 0.7, respectively), which may account for the decrease in tumor volume^[2].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

489.40

C₂₇H₂₂Cl₂N₄O

192185-72-1

替吡法尼

Room temperature in continental US; may vary elsewhere.

DMSO : 14.29 mg/mL (29.20 mM; Need ultrasonic)

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液，再依次添加助溶剂：

——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用； 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶

• 1.

  请依序添加每种溶剂： 20% HP-β-CD/10 mM citrate pH 2.0

  Solubility: 10 mg/mL (20.43 mM); Clear solution; Need ultrasonic
• 2.

  请依序添加每种溶剂： 10% DMSO    40% PEG300    5% Tween-80    45% saline

  Solubility: ≥ 1.43 mg/mL (2.92 mM); Clear solution

  此方案可获得 ≥ 1.43 mg/mL (2.92 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 14.3 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。

  将 0.9 g 氯化钠，完全溶解于 100 mL ddH₂O 中，得到澄清透明的生理盐水溶液

• 3.

  请依序添加每种溶剂： 10% DMSO    90% (20% SBE-β-CD in saline)

  Solubility: 1.43 mg/mL (2.92 mM); Suspended solution; Need ultrasonic

  此方案可获得 1.43 mg/mL (2.92 mM) 的均匀悬浊液，悬浊液可用于口服和腹腔注射。

  以 1 mL 工作液为例，取 100 μL 14.3 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。

  将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中，再用生理盐水定容至 10 mL，完全溶解，澄清透明
• 4.

  请依序添加每种溶剂： 10% DMSO    90% corn oil

  Solubility: ≥ 1.43 mg/mL (2.92 mM); Clear solution

  此方案可获得 ≥ 1.43 mg/mL (2.92 mM，饱和度未知) 的澄清溶液，此方案不适用于实验周期在半个月以上的实验。

  以 1 mL 工作液为例，取 100 μL 14.3 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

• [1]. Devendra S Puntambekar, et al. Inhibition of farnesyltransferase: a rational approach to treat cancer? J Enzyme Inhib Med Chem. 2007 Apr;22(2):127-40.

  [2]. Martin LA, et al. The farnesyltransferase inhibitor R115777 (tipifarnib) in combination with ICI 47699 acts synergistically to inhibit MCF-7 breast cancer cell proliferation and cell cycle progression in vitro and in vivo. Mol Cancer Ther. 2007 Sep;6(9):2

  [3]. End DW, et al. Characterization of the antitumor effects of the selective farnesyl protein transferase inhibitor R115777 in vivo and in vitro. Cancer Res. 2001 Jan 1;61(1):131-7

  [4]. Amrita Datta, et al. High-throughput screening identified selective inhibitors of exosome biogenesis and secretion: A drug repurposing strategy for advanced cancer. Sci Rep. 2018 May 25;8(1):8161.

Steroid-depleted cells are seeded into 12-well plates at a density of appr 1×10⁴ cells per well or into 96-well plates at a density of 4,000 cells per well, in dextran-coated charcoal medium. After 24 h, monolayers are treated with E2 plus inhibitors either alone or in combination. The 12-well plates are treated for 6 days with daily changes. Cell number is then determined using a Z1 Coulter counter. The 96-well plates are treated with a single dose and left for 96 h at which time cell viability is measured using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay as described previously. The interaction between Tipifarnib and 4-OH-ICI 47699 is analyzed by the median effect plot method described by Chou and Talalay. Calculation of the combination index took into account a nonfixed drug ratio and is based on the assumption that the action of the two drugs is mutually nonexclusive for the strict detection of synergism. A combination index < 1 indicates synergism, combination index=1 indicates additivity, and a combination index > 1 indicates antagonism. Experiments are repeated thrice.

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

Female ovariectomized Ncr foxhead nude mice are kept under sterile conditions with free access to food and water. MCF-7 xenografts are initiated by implantation of 2-mm diameter tumor fragments from established tumors. Once tumors reach a diameter of appr 7 mm, mice are randomized to receive vehicle [20% w/v β-cyclodextrin (pH 2.5) for Tipifarnib, 50% PEG 300, 50% H₂O + 1 drop 1N HCl per 3 mL for ICI 47699], Tipifarnib (50 mg/kg twice daily), ICI 47699 (20 mg/kg), or a combination of both Tipifarnib and ICI 47699. Two further treatment arms are used to assess the effect of E2 withdrawal (removal of the E2 pellet) or E2 withdrawal combined with Tipifarnib (50 mg/kg twice daily). All drugs are given by oral gavage daily for 5 consecutive days followed by a 2-day rest period, for a total of 19 days. The experiment is done twice giving similar results; therefore, the growth data are combined for statistical analysis. There are six tumor-bearing animals in each group and all tumors are harvested on day 19. Tumor volumes are calculated using the formula a × b² × π/6, where a and b are orthogonal tumor diameters and expressed as a percentage of the volume at the start of treatment (relative tumor volume). Overall statistical difference is calculated using the Kruskal-Wallace test and statistical differences between individual treatment arms are calculated using the Mann-Whitney test.

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

• [1]. Devendra S Puntambekar, et al. Inhibition of farnesyltransferase: a rational approach to treat cancer? J Enzyme Inhib Med Chem. 2007 Apr;22(2):127-40.

  [2]. Martin LA, et al. The farnesyltransferase inhibitor R115777 (tipifarnib) in combination with ICI 47699 acts synergistically to inhibit MCF-7 breast cancer cell proliferation and cell cycle progression in vitro and in vivo. Mol Cancer Ther. 2007 Sep;6(9):2

  [3]. End DW, et al. Characterization of the antitumor effects of the selective farnesyl protein transferase inhibitor R115777 in vivo and in vitro. Cancer Res. 2001 Jan 1;61(1):131-7

  [4]. Amrita Datta, et al. High-throughput screening identified selective inhibitors of exosome biogenesis and secretion: A drug repurposing strategy for advanced cancer. Sci Rep. 2018 May 25;8(1):8161.