Tipifarnib 的 ED50 为 4 nM，是 Cruzi 锥虫的强抑制剂。对于核纤层蛋白 B 肽和 K-RasB 肽，替比法尼的 IC50 分别为 0.86 nM 和 7.9 nM，替比法尼抑制这两种生物分子的分离的人法尼基转移酶 [2]。对于侵袭性前列腺癌 (PCa)，替比法尼可减少血管生成和细胞增殖，同时诱导细胞凋亡 [3]。替比法尼（0.25 μM、1 μM；48 小时）显着减少 C4-2B 和 PC-3 细胞中外泌体的数量 [3]。 Tipifarnib (1 μM) 可显着抑制 C4-2B 细胞中的 Alix、nSMase2 和 Rab27a 蛋白数量 [3]。当应用于 C4-2B 和 PC-3 细胞时，替比法尼 (0.25 μM) 强烈抑制 p-ERK（Ras/Raf/ERK 信号通路的下游效应分子）的激活，但不会减少总 ERK [3]。暴露于替比法尼 (1.25-5 μM) 30 分钟会导致 U937 细胞内质网应激，进而导致细胞内钙稳态失衡 [4]。

在小鼠中，替比法尼（10 mg/kg；腹腔注射；单剂量）通过上调肝脏抗凋亡蛋白 Bcl-xL 抑制 GalN/LPS 引起的死亡率 [5]。

Animal/Disease Models: GalN/LPS challenge mouse[5]
Doses: 10 mg/kg; while chanllenge with GalN (400 mg/kg; IP) and LPS (32 g/kg)
Route of Administration: IP; 60 min before challenge
Experimental Results: Protected primary hepatocytes from GalN/tumor necrosis factor-induced cell death. Inhibited caspase 3 activation and upregulating antiapoptotic proteins.

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

[2]. 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.

[3]. 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.

Tipifarnib is a quinolone that is 1-methylquinolin-2-one which carries a 3-chlorophenyl and an amino(4-chlorophenyl)(1-methyl-imidazol-5-yl)methyl groups at the 4 and 6 positions, respectively (the R-isomer). It has a role as an antineoplastic agent, an EC 2.5.1.58 (protein farnesyltransferase) inhibitor and an apoptosis inducer. It is a quinolone, a member of monochlorobenzenes, a member of imidazoles and a primary amino compound.
Tipifarnib (R-115777) is a substance that is being studied in the treatment of acute myeloid leukemia (AML) and other types of cancer. It belongs to the family of drugs called farnesyltransferase inhibitors. It is also called Zarnestra. In June 2005, the FDA issued a Not Approvable Letter for Zarnestra.
Tipifarnib is a nonpeptidomimetic quinolinone with potential antineoplastic activity. Tipifarnib binds to and inhibits the enzyme farnesyl protein transferase, an enzyme involved in protein processing (farnesylation) for signal transduction. By inhibiting the farnesylation of proteins, this agent prevents the activation of Ras oncogenes, inhibits cell growth, induces apoptosis, and inhibits angiogenesis. (NCI04)

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Drug Indication
Investigated for use/treatment in colorectal cancer, leukemia (myeloid), pancreatic cancer, and solid tumors.
Treatment of head and neck epithelial malignant neoplasms

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Mechanism of Action
The farnesyltransferase inhibitors (FTIs) are a class of experimental cancer drugs that target protein farnesyltransferase with the downstream effect of preventing the proper functioning of the Ras protein, which is commonly abnormally active in cancer. After translation, RAS goes through four steps of modification: isoprenylation, proteolysis, methylation and palmitoylation. Isoprenylation involves the enzyme farnesyltransferase (FTase) transferring a farnesyl group from farnesyl pyrophosphate (FPP) to the pre-RAS protein. Also, a related enzyme geranylgeranyltransferase I (GGTase I) has the ability to transfer a geranylgeranyl group to K and N-RAS. Farnesyl is necessary to attach RAS to the cell membrane. Without attachment to the cell membrane, RAS is not able to transfer signals from membrane receptors (Reuter et al., 2000).

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Pharmacodynamics
R115777, a nonpeptidomimetic farnesyl transferase inhibitor, suppresses the growth of human pancreatic adenocarcinoma cell lines. This growth inhibition is associated with modulation in the phosphorylation levels of signal transducers and activators of transcription 3 (STAT3) and extracellular signal-regulated kinases (ERK).

C27H22CL2N4O

489.4

488.117

192185-72-1

Tipifarnib (S enantiomer);192185-71-0

159324

White to light yellow solid powder

1.3±0.1 g/cm3

681.7±55.0 °C at 760 mmHg

211-213ºC (dec.)

366.1±31.5 °C

0.0±2.1 mmHg at 25°C

1.672

4.94

65.84

1

3

4

34

785

1

CN1C=NC=C1[C@@](C2=CC=C(C=C2)Cl)(C3=CC4=C(C=C3)N(C(=O)C=C4C5=CC(=CC=C5)Cl)C)N

PLHJCIYEEKOWNM-HHHXNRCGSA-N

InChI=1S/C27H22Cl2N4O/c1-32-16-31-15-25(32)27(30,18-6-9-20(28)10-7-18)19-8-11-24-23(13-19)22(14-26(34)33(24)2)17-4-3-5-21(29)12-17/h3-16H,30H2,1-2H3/t27-/m1/s1

6-[(R)-amino-(4-chlorophenyl)-(3-methylimidazol-4-yl)methyl]-4-(3-chlorophenyl)-1-methylquinolin-2-one

R115777; R 115777; R-115777; LX81; NSC702818; D03720; trade name Zarnestra

2934.99.9001

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

配方 1 中的溶解度: ≥ 1.43 mg/mL (2.92 mM) (饱和度未知) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (这些助溶剂从左到右依次添加，逐一添加), 澄清溶液。
例如，若需制备1 mL的工作液，可将100 μL 14.3 mg/mL澄清DMSO储备液加入400 μL PEG300中，混匀；然后向上述溶液中加入50 μL Tween-80，混匀；加入450 μL生理盐水定容至1 mL。
*生理盐水的制备：将 0.9 g 氯化钠溶解在 100 mL ddH₂O中，得到澄清溶液。

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配方 2 中的溶解度: 1.43 mg/mL (2.92 mM) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (这些助溶剂从左到右依次添加，逐一添加), 悬浊液; 超声助溶。
例如，若需制备1 mL的工作液，可将 100 μL 14.3mg/mL澄清的DMSO储备液加入到900μL 20％SBE-β-CD生理盐水中，混匀。
*20% SBE-β-CD 生理盐水溶液的制备（4°C，1 周）：将 2 g SBE-β-CD 溶解于 10 mL 生理盐水中，得到澄清溶液。

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配方 3 中的溶解度: ≥ 1.43 mg/mL (2.92 mM) (饱和度未知) in 10% DMSO + 90% Corn Oil (这些助溶剂从左到右依次添加，逐一添加), 澄清溶液。
例如，若需制备1 mL的工作液，可将 100 μL 14.3 mg/mL 澄清 DMSO 储备液加入到 900 μL 玉米油中并混合均匀。

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配方 4 中的溶解度: 15% Captisol+citrate vehicle: 5 mg/mL

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配方 5 中的溶解度: 10 mg/mL (20.43 mM) in 20% HP-β-CD/10 mM citrate pH 2.0 (这些助溶剂从左到右依次添加，逐一添加), 澄清溶液; 超声助溶.

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请根据您的实验动物和给药方式选择适当的溶解配方/方案：
1、请先配制澄清的储备液(如：用DMSO配置50 或 100 mg/mL母液(储备液));
2、取适量母液，按从左到右的顺序依次添加助溶剂，澄清后再加入下一助溶剂。以 下列配方为例说明 (注意此配方只用于说明，并不一定代表此产品 的实际溶解配方):
10% DMSO → 40% PEG300 → 5% Tween-80 → 45% ddH2O (或 saline);
假设最终工作液的体积为 1 mL, 浓度为5 mg/mL: 取 100 μL 50 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀/澄清；向上述体系中加入50 μL Tween-80，混合均匀/澄清；然后继续加入450 μL ddH2O (或 saline)定容至 1 mL；
3、溶剂前显示的百分比是指该溶剂在最终溶液/工作液中的体积所占比例;
4、 如产品在配制过程中出现沉淀/析出，可通过加热(≤50℃)或超声的方式助溶;
5、为保证最佳实验结果，工作液请现配现用！
6、如不确定怎么将母液配置成体内动物实验的工作液，请查看说明书或联系我们;
7、 以上所有助溶剂都可在 Invivochem.cn网站购买。