Pralnacasan
(Synonyms: VX-740; HMR 3480) 目录号 : GC62567
Pralnacasan (VX-740) 是一种有效的，选择性的，非肽型，具有口服活性白介素 1β 转化酶 (ICE, caspase 1) 抑制剂，Ki 为 1.4 nM。Pralnacasan 抑制促炎细胞因子 IL-18，IL-1β 和 IFN-γ。Pralnacasan 有潜力用于骨关节炎和类风湿关节炎的研究。
Cas No.:192755-52-5
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
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- Purity: >98.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
Pralnacasan (VX-740) is a potent, selective, non-peptide and orally active interleukin-1β converting enzyme (ICE, caspase 1) inhibitor with a Ki of 1.4 nM. Pralnacasan inhibits proinflammatory cytokines IL-18, IL-1β , and IFN-γ. Pralnacasan has the potential for osteoarthritis and rheumatoid arthritis treatment[1][2].
Pralnacasan (0 -50 mg/kg; oral gavage; twice a day; for 6 weeks; female Balb/c mice) treatment reduces joint damage. Pralnacasan treatment does not appear to affect the weight of the animals[1].
[1]. Rudolphi K, et al. Pralnacasan, an inhibitor of interleukin-1beta converting enzyme, reduces joint damage in two murine models of osteoarthritis. Osteoarthritis Cartilage. 2003 Oct;11(10):738-46.
[2]. Loher F, et al. The interleukin-1 beta-converting enzyme inhibitor pralnacasan reduces dextran sulfate sodium-induced murine colitis and T helper 1 T-cell activation. J Pharmacol Exp Ther. 2004 Feb;308(2):583-90.
| Cas No. | 192755-52-5 | SDF | |
| 别名 | VX-740; HMR 3480 | ||
| 分子式 | C26H29N5O7 | 分子量 | 523.54 |
| 溶解度 | DMSO : 220 mg/mL (420.22 mM; Need ultrasonic) | 储存条件 | Store at -20°C |
| General tips | 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 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。 为了提高溶解度，请将管子加热至37℃，然后在超声波浴中震荡一段时间。 |
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| Shipping Condition | 评估样品解决方案：配备蓝冰进行发货。所有其他可用尺寸：配备RT，或根据请求配备蓝冰。 | ||
| 制备储备液 | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 1.9101 mL | 9.5504 mL | 19.1007 mL |
| 5 mM | 0.382 mL | 1.9101 mL | 3.8201 mL |
| 10 mM | 0.191 mL | 0.955 mL | 1.9101 mL |
| 第一步：请输入基本实验信息（考虑到实验过程中的损耗，建议多配一只动物的药量） | ||||||||||
| 给药剂量 | mg/kg |  |
动物平均体重 | g | |
每只动物给药体积 | ul | |
动物数量 | 只 |
| 第二步：请输入动物体内配方组成（配方适用于不溶于水的药物；不同批次药物配方比例不同，请联系GLPBIO为您提供正确的澄清溶液配方） | ||||||||||
| % DMSO % % Tween 80 % saline | ||||||||||
| 计算重置 | ||||||||||
计算结果:
工作液浓度： mg/ml；
DMSO母液配制方法： mg 药物溶于 μL DMSO溶液（母液浓度 mg/mL，
体内配方配制方法：取 μL DMSO母液，加入 μL PEG300，混匀澄清后加入μL Tween 80，混匀澄清后加入 μL saline，混匀澄清。
1. 首先保证母液是澄清的；
2.
一定要按照顺序依次将溶剂加入，进行下一步操作之前必须保证上一步操作得到的是澄清的溶液，可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
Colitis induced in mice with dextran sulfate sodium (DSS) is mediated by the NLRP3 inflammasome
Gut 2010 Sep;59(9):1192-9.PMID:20442201DOI:10.1136/gut.2009.197822.
Background: The proinflammatory cytokines interleukin 1beta (IL-1beta) and IL-18 are central players in the pathogenesis of inflammatory bowel disease (IBD). In response to a variety of microbial components and crystalline substances, both cytokines are processed via the caspase-1-activating multiprotein complex, the NLRP3 inflammasome. Here, the role of the NLRP3 inflammasome in experimental colitis induced by dextran sodium sulfate (DSS) was examined. Methods: IL-1beta production in response to DSS was studied in macrophages of wild-type, caspase-1(-/-), NLRP3(-/-), ASC(-/-), cathepsin B(-/-) or cathepsin L(-/-) mice. Colitis was induced in C57BL/6 and NLRP3(-/-) mice by oral DSS administration. A clinical disease activity score was evaluated daily. Histological colitis severity and expression of cytokines were determined in colonic tissue. Results: Macrophages incubated with DSS in vitro secreted high levels of IL-1beta in a caspase-1-dependent manner. IL-1beta secretion was abrogated in macrophages lacking NLRP3, ASC or caspase-1, indicating that DSS activates caspase-1 via the NLRP3 inflammasome. Moreover, IL-1beta secretion was dependent on phagocytosis, lysosomal maturation, cathepsin B and L, and reactive oxygen species (ROS). After oral administration of DSS, NLRP3(-/-) mice developed a less severe colitis than wild-type mice and produced lower levels of proinflammatory cytokines in colonic tissue. Pharmacological inhibition of caspase-1 with Pralnacasan achieved a level of mucosal protection comparable with NLRP3 deficiency. Conclusions: The NLRP3 inflammasome was identified as a critical mechanism of intestinal inflammation in the DSS colitis model. The NLRP3 inflammasome may serve as a potential target for the development of novel therapeutics for patients with IBD.
Pralnacasan (vertex pharmaceuticals)
IDrugs 2003 Feb;6(2):154-8.PMID:12789619doi
Vertex is collaborating with Aventis Pharma AG (formerly Hoechst Marion Roussel Inc) in the development of Pralnacasan, an interleukin (IL)-1b converting enzyme (ICE) inhibitor, for the potential treatment of inflammatory diseases [170247], [188293], [453094].
Pralnacasan, an inhibitor of interleukin-1beta converting enzyme, reduces joint damage in two murine models of osteoarthritis
Osteoarthritis Cartilage 2003 Oct;11(10):738-46.PMID:13129693DOI:10.1016/s1063-4584(03)00153-5.
Objective: To study the effect of Pralnacasan, the orally bioavailable pro-drug of a potent, non-peptide inhibitor of interleukin-1beta converting enzyme (ICE), RU 36384/VRT-18858, on joint damage in two mouse models of knee osteoarthritis (OA). Design: In a collagenase-induced OA model, Pralnacasan was given orally by gavage to female Balb/c mice at 0, 12.5, 25 and 50 mg/kg twice a day. In the second study, Pralnacasan was tested in male STR/1N mice, which develop OA spontaneously, by administering food-drug mixtures ad libitum at concentrations of 0, 700 and 4200 ppm (mg/kg food). OA joint damage was assessed by a semi-quantitative histopathological score in both studies. In the STR/1N mouse study, urinary levels of collagen cross-links hydroxylysylpyridinoline (HP) and lysylpyridinoline (LP) were determined by high-pressure liquid chromatography at baseline, after 3 and 6 weeks of treatment and RU 36384/VRT-18858 plasma concentrations was measured after 6 weeks. Results: In both studies, the mice developed moderate to severe knee joint OA in the medial joint compartments (tibial plateau and femoral condyle), the non-treated control groups showing median histopathological scores from 18 to 21 of a maximal score of 32. Pralnacasan was well tolerated. At the doses of 12.5 and 50 mg/kg in collagenase-induced OA and at the high dose of 4200 ppm in STR/1N mice Pralnacasan treatment significantly reduced OA by 13-22%. In the STR/1N mice, urinary levels of HP cross-links and the ratio of HP/LP, which are indicators of joint damage in OA, were significantly reduced in the high dose group by 59 and 84%, respectively. Conclusions: The ICE inhibitor Pralnacasan reduced joint damage in two experimental models of OA and has the potential to become a disease-modifying drug for the treatment of OA.
The interleukin-1 beta-converting enzyme inhibitor Pralnacasan reduces dextran sulfate sodium-induced murine colitis and T helper 1 T-cell activation
J Pharmacol Exp Ther 2004 Feb;308(2):583-90.PMID:14610233DOI:10.1124/jpet.103.057059.
The proinflammatory cytokines interleukin (IL)-1beta and IL-18 are supposed to play a crucial role in the pathogenesis of human inflammatory bowel disease. To exert biological activity, the precursors of both IL-1beta and IL-18 need to be cleaved by the interleukin-1beta-converting enzyme (ICE). IL-18 induces the synthesis of IFN-gamma in T cells and NK cells. In the present study, we investigated the effect of the specific ICE inhibitor Pralnacasan in dextran sulfate sodium-induced murine colitis. Colitis was induced in BALB/c mice by 3.5% dextran sulfate sodium dissolved in drinking water for 10 days. Pralnacasan was administered either intraperitoneally or orally every day. To assess in vivo efficacy, a clinical disease activity score was evaluated daily. Colon length, expression of IL-18 in colonic tissue, expression of interferon-gamma (IFN-gamma) in paraaortal lymphocytes, and systemic production of IFN-gamma in splenocytes were analyzed post mortem. Intraperitoneally administered Pralnacasan significantly reduced the clinical score compared with the dextran sulfate sodium control group from day 6 to day 10. Oral administration of Pralnacasan also significantly reduced the clinical score at days 8 and 9. Administration of Pralnacasan i.p. reduced the expression of intracolonic IL-18 significantly. Furthermore, Pralnacasan reduced the number of IFN-gamma-positive lymphocytes in paraaortal lymph nodes. IFN-gamma synthesis in stimulated splenocytes was significantly suppressed in all pralnacasan-treated groups. No side effects of Pralnacasan were observed. In conclusion, Pralnacasan is effective in the prevention of dextran sulfate sodium-induced colitis. This effect is probably mediated by suppression of the proinflammatory cytokines IL-18, IL-1beta, and IFN-gamma.
The ICE inhibitor Pralnacasan prevents DSS-induced colitis in C57BL/6 mice and suppresses IP-10 mRNA but not TNF-alpha mRNA expression
Dig Dis Sci 2007 Jul;52(7):1642-52.PMID:17393315DOI:10.1007/s10620-007-9802-8.
Previously we demonstrated an ameliorating effect of the interleukin-1beta converting enzyme (ICE) inhibitor Pralnacasan on dextran sulfate sodium (DSS)-induced colitis. This study investigates the effects of Pralnacasan on cytokine expression in DSS-induced colitis. Colitis was induced by oral administration of DSS. Mice were treated intraperitoneally with the ICE inhibitor Pralnacasan (50 mg/kg body weight twice daily). Body weight as well as the presence of occult blood or diarrhea was monitored daily. Subgroups were sacrificed at days 4, 8, and 11 after the beginning of DSS application. Cytokine profiles in colonic tissue were analyzed on the protein level by ELISA and on the mRNA level by real time RT-PCR. Administration of DSS led to an increase in IL-18, IL-12, TNF-alpha, and IFN-gamma protein as well as IP-10 and TNF-alpha mRNA. The increase in IL-18 and IFN-gamma was reduced by ICE inhibition. Pralnacasan prevented DSS-induced colitis in C57BL/6 mice. In C57BL/6 mice, the DSS-induced increase in IP-10 mRNA, but not TNF-alpha mRNA, was completely prevented by ICE inhibition. In conclusion, prevention of colitis in C57BL/6 mice was associated with a suppresion of IP-10 mRNA, but not TNF-alpha mRNA expression, indicating that IL-18-mediated cytokine production is a key element in the pathogenesis of DSS-induced colitis.