FT671
目录号 : GC32786
FT671是有效，选择性的USP7抑制剂，IC50值为52nM，与USP7催化域结合的Kd值为65nM。
Cas No.:1959551-26-8
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >98.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
FT671 is a potent and selective USP7 inhibitor with an IC50 of 52 nM and binds to the USP7 catalytic domain with a Kd of 65 nM.
FT671 binds to the USP7 catalytic domain (USP7CD; residues 208-560) with apparent dissociation constant (Kd) value of 65nM (s.e.m. range: 45-92). FT671 inhibits USP7 with half-maximal inhibitory concentration (IC50) value of 52 (29-94) nM (USP7CD). Cell lines derived from colorectal carcinoma (HCT116) or bone osteosarcoma (U2OS) respond to USP7 knockdown with p53 stabilization and p21 induction, leading to growth arrest and apoptosis. Similarly, FT671 increases p53 protein levels in these cell lines, leading to induction of p53 target genes including BBC3 (which encodes PUMA), CDKN1A (p21), RPS27L (S27L) and MDM2. The increase in p53 correlates with increased MDM2 degradation, which is initially balanced by p53-induced MDM2 expression, but has an effect on MDM2 protein levels after prolonged compound treatment. FT671 leads to the degradation of N-Myc and upregulation of p53 in the neuroblastoma cell line IMR-32. FT671 also stabilizes p53 in the MM.1S multiple myeloma cell line, which correlates with increased MDM2 ubiquitination and leads to expression of p53 target genes. FT671 blocks the proliferation of MM.1S cells, with an IC50 value of 33 nM[1].
Treatment of mice with FT671 leads to a significant dose-dependent inhibition of tumour growth. FT671 is well-tolerated even at high doses, and no significant weight loss or cachexia is observed during the study[1].
[1]. Turnbull AP, et al. Molecular basis of USP7 inhibition by selective small-molecule inhibitors. Nature. 2017 Oct 26;550(7677):481-486.
| Cas No. | 1959551-26-8 | SDF | |
| Canonical SMILES | FC1=CC=C(N2N=CC3=C2N=CN(CC4(O)CCN(C(C[C@@H](C(F)F)N5N=C(F)C=C5)=O)CC4)C3=O)C=C1 | ||
| 分子式 | C24H23F4N7O3 | 分子量 | 533.48 |
| 溶解度 | DMSO: 50 mg/mL (93.72 mM) | 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 | 1.8745 mL | 9.3724 mL | 18.7448 mL |
| 5 mM | 0.3749 mL | 1.8745 mL | 3.749 mL |
| 10 mM | 0.1874 mL | 0.9372 mL | 1.8745 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。
Molecular basis of USP7 inhibition by selective small-molecule inhibitors
Nature 2017 Oct 26;550(7677):481-486.PMID:29045389DOI:10.1038/nature24451.
Ubiquitination controls the stability of most cellular proteins, and its deregulation contributes to human diseases including cancer. Deubiquitinases remove ubiquitin from proteins, and their inhibition can induce the degradation of selected proteins, potentially including otherwise 'undruggable' targets. For example, the inhibition of ubiquitin-specific protease 7 (USP7) results in the degradation of the oncogenic E3 ligase MDM2, and leads to re-activation of the tumour suppressor p53 in various cancers. Here we report that two compounds, FT671 and FT827, inhibit USP7 with high affinity and specificity in vitro and within human cells. Co-crystal structures reveal that both compounds target a dynamic pocket near the catalytic centre of the auto-inhibited apo form of USP7, which differs from other USP deubiquitinases. Consistent with USP7 target engagement in cells, FT671 destabilizes USP7 substrates including MDM2, increases levels of p53, and results in the transcription of p53 target genes, induction of the tumour suppressor p21, and inhibition of tumour growth in mice.
Small molecule inhibitors reveal allosteric regulation of USP14 via steric blockade
Cell Res 2018 Dec;28(12):1186-1194.PMID:30254335DOI:10.1038/s41422-018-0091-x.
The ubiquitin system is important for drug discovery, and the discovery of selective small-molecule inhibitors of deubiquitinating enzymes (DUBs) remains an active yet extremely challenging task. With a few exceptions, previously developed inhibitors have been found to bind the evolutionarily conserved catalytic centers of DUBs, resulting in poor selectivity. The small molecule IU1 was the first-ever specific inhibitor identified and exhibited surprisingly excellent selectivity for USP14 over other DUBs. However, the molecular mechanism for this selectivity was elusive. Herein, we report the high-resolution co-crystal structures of the catalytic domain of USP14 bound to IU1 and three IU1 derivatives. All the structures of these complexes indicate that IU1 and its analogs bind to a previously unknown steric binding site in USP14, thus blocking the access of the C-terminus of ubiquitin to the active site of USP14 and abrogating USP14 activity. Importantly, this steric site in USP14 is very unique, as suggested by structural alignments of USP14 with several known DUB X-ray structures. These results, in conjunction with biochemical characterization, indicate a coherent steric blockade mechanism for USP14 inhibition by compounds of the IU series. In light of the recent report of steric blockade of USP7 by FT671, this work suggests a potential generally applicable allosteric mechanism for the regulation of DUBs via steric blockade, as showcased by our discovery of IU1-248 which is 10-fold more potent than IU1.
Screening for antimicrobial and proteolytic activities of lactic acid bacteria isolated from cow, buffalo and goat milk and cheeses marketed in the southeast region of Brazil
J Dairy Res 2016 Feb;83(1):115-24.PMID:26608755DOI:10.1017/S0022029915000606.
Lactic acid bacteria (LAB) can be isolated from different sources such as milk and cheese, and the lipolytic, proteolytic and glycolytic enzymes of LAB are important in cheese preservation and in flavour production. Moreover, LAB produce several antimicrobial compounds which make these bacteria interesting for food biopreservation. These characteristics stimulate the search of new strains with technological potential. From 156 milk and cheese samples from cow, buffalo and goat, 815 isolates were obtained on selective agars for LAB. Pure cultures were evaluated for antimicrobial activities by agar antagonism tests and for proteolytic activity on milk proteins by cultivation on agar plates. The most proteolytic isolates were also tested by cultivation in skim milk followed by sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) analysis of the fermented milk. Among the 815 tested isolates, three of them identified as Streptococcus uberis (strains FT86, FT126 and FT190) were bacteriocin producers, whereas four other ones identified as Weissella confusa FT424, W. hellenica FT476, Leuconostoc citreum FT671 and Lactobacillus plantarum FT723 showed high antifungal activity in preliminary assays. Complementary analyses showed that the most antifungal strain was L. plantarum FT723 that inhibited Penicillium expansum in modified MRS agar (De Man, Rogosa, Sharpe, without acetate) and fermented milk model, however no inhibition was observed against Yarrowia lipolytica. The proteolytic capacities of three highly proteolytic isolates identified as Enterococcus faecalis (strains FT132 and FT522) and Lactobacillus paracasei FT700 were confirmed by SDS-PAGE, as visualized by the digestion of caseins and whey proteins (β-lactoglobulin and α-lactalbumin). These results suggest potential applications of these isolates or their activities (proteolytic activity or production of antimicrobials) in dairy foods production.