GSK3368715
(Synonyms: EPZ019997) 目录号 : GC36191
An inhibitor of type I PRMTs
Cas No.:1629013-22-4
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
GSK3368715 is an inhibitor of type I protein arginine methyltransferases (PRMTs; IC50s = 3.1, 162, 38, 4.7, and 39 nM for PRMT1, 3, 4, 6, and 8, respectively).1 It is selective for type I PRMTs over PRMT5, 7, and 9 (IC50s = >20,408, >40,000, and >15,000 nM, respectively), as well as 20 additional methyltransferases and a panel of ion channels, receptors, and transporters at 10 ?M. GSK3368715 (5 ?M) inhibits the growth of patient-derived diffuse large B cell lymphoma (DLBCL) cells. In vivo, GSK3368715 (9.375-150 mg/kg) reduces tumor volume in Toledo DLBCL and BxPC-3 pancreatic adenosarcoma mouse xenograft models. It also reduces tumor growth in ACHN renal carcinoma and MDA-MB-468 breast cancer mouse xenograft models and a pancreatic adenocarcinoma patient-derived xenograft (PDX) mouse model when administered at doses of 150 and 300 mg/kg, respectively.
1.Fedoriw, A., Rajapurkar, S.R., O'Brien, S., et al.Anti-tumor activity of the type I PRMT inhibitor, GSK3368715, synergizes with PRMT5 inhibition through MTAP lossCancer Cell36(1)100-114.e125(2019)
| Cas No. | 1629013-22-4 | SDF | |
| 别名 | EPZ019997 | ||
| Canonical SMILES | CNCCN(CC1=CNN=C1C2CCC(COCC)(COCC)CC2)C | ||
| 分子式 | C20H38N4O2 | 分子量 | 366.54 |
| 溶解度 | Soluble in DMSO | 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 | 2.7282 mL | 13.6411 mL | 27.2822 mL |
| 5 mM | 0.5456 mL | 2.7282 mL | 5.4564 mL |
| 10 mM | 0.2728 mL | 1.3641 mL | 2.7282 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。
Anti-tumor Activity of the Type I PRMT Inhibitor, GSK3368715, Synergizes with PRMT5 Inhibition through MTAP Loss
Cancer Cell 2019 Jul 8;36(1):100-114.e25.PMID:31257072DOI:10.1016/j.ccell.2019.05.014.
Type I protein arginine methyltransferases (PRMTs) catalyze asymmetric dimethylation of arginines on proteins. Type I PRMTs and their substrates have been implicated in human cancers, suggesting inhibition of type I PRMTs may offer a therapeutic approach for oncology. The current report describes GSK3368715 (EPZ019997), a potent, reversible type I PRMT inhibitor with anti-tumor effects in human cancer models. Inhibition of PRMT5, the predominant type II PRMT, produces synergistic cancer cell growth inhibition when combined with GSK3368715. Interestingly, deletion of the methylthioadenosine phosphorylase gene (MTAP) results in accumulation of the metabolite 2-methylthioadenosine, an endogenous inhibitor of PRMT5, and correlates with sensitivity to GSK3368715 in cell lines. These data provide rationale to explore MTAP status as a biomarker strategy for patient selection.
Inhibiting Type I Arginine Methyltransferase Activity Promotes T Cell-Mediated Antitumor Immune Responses
Cancer Immunol Res 2022 Apr 1;10(4):420-436.PMID:35181787DOI:10.1158/2326-6066.CIR-21-0614.
Protein arginine methyltransferases (PRMT) are a widely expressed class of enzymes responsible for catalyzing arginine methylation on numerous protein substrates. Among them, type I PRMTs are responsible for generating asymmetric dimethylarginine. By controlling multiple basic cellular processes, such as DNA damage responses, transcriptional regulation, and mRNA splicing, type I PRMTs contribute to cancer initiation and progression. A type I PRMT inhibitor, GSK3368715, has been developed and has entered clinical trials for solid and hematologic malignancies. Although type I PRMTs have been reported to play roles in modulating immune cell function, the immunologic role of tumor-intrinsic pathways controlled by type I PRMTs remains uncharacterized. Here, our The Cancer Genome Atlas dataset analysis revealed that expression of type I PRMTs associated with poor clinical response and decreased immune infiltration in patients with melanoma. In cancer cell lines, inhibition of type I PRMTs induced an IFN gene signature, amplified responses to IFN and innate immune signaling, and decreased expression of the immunosuppressive cytokine VEGF. In immunocompetent mouse tumor models, including a model of T-cell exclusion that represents a common mechanism of anti-programmed cell death protein 1 (PD-1) resistance in humans, type I PRMT inhibition increased T-cell infiltration, produced durable responses dependent on CD8+ T cells, and enhanced efficacy of anti-PD-1 therapy. These data indicate that type I PRMT inhibition exhibits immunomodulatory properties and synergizes with immune checkpoint blockade (ICB) to induce durable antitumor responses in a T cell-dependent manner, suggesting that type I PRMT inhibition can potentiate an antitumor immunity in refractory settings.
A patent review of arginine methyltransferase inhibitors (2010-2018)
Expert Opin Ther Pat 2019 Feb;29(2):97-114.PMID:30640571DOI:10.1080/13543776.2019.1567711.
Introduction: Protein arginine methyltransferases (PRMTs) are fundamental enzymes that specifically modify the arginine residues of versatile substrates in cells. The aberrant expression and abnormal enzymatic activity of PRMTs are associated with many human diseases, especially cancer. PRMTs are emerging as promising drug targets in both academia and industry. Areas covered: This review summarizes the updated patented inhibitors targeting PRMTs from 2010 to 2018. The authors illustrate the chemical structures, molecular mechanism of action, pharmacological activities as well as the potential clinical application including combination therapy and biomarker-guided therapy. PRMT inhibitors in clinical trials are also highlighted. The authors provide a future perspective for further development of potent and selective PRMT inhibitors. Expert opinion: Although a number of small molecule inhibitors of PRMTs with sufficient potency have been developed, the selectivity of most PRMT inhibitors remains to be improved. Hence, novel approaches such as allosteric regulation need to be further studied to identify PRMT inhibitors. So far, three PRMT inhibitors have entered clinical trials, including PRMT5 inhibitor GSK3326595 and JNJ-64619178 as well as PRMT1 inhibitor GSK3368715. PRMT inhibitors with novel mechanism of action and good drug-like properties may shed new light on drug research and development progress.
M-TAP Dance: Targeting PRMT1 and PRMT5 Family Members to Push Cancer Cells Over the Edge
Cancer Cell 2019 Jul 8;36(1):3-5.PMID:31287990DOI:10.1016/j.ccell.2019.06.004.
In this issue of Cancer Cell, Fedoriw and colleagues characterize a potent reversible inhibitor of type I PRMTs, GSK3368715, with anti-proliferative effects on numerous cancer types. Using a combination of GSK3368715 with PRMT5 inhibitors, the authors show that a threshold of overall arginine methylation reduction needs to be achieved for synergistic anti-tumor activity.
Identification of hnRNP-A1 as a pharmacodynamic biomarker of type I PRMT inhibition in blood and tumor tissues
Sci Rep 2020 Dec 17;10(1):22155.PMID:33335114DOI:10.1038/s41598-020-78800-6.
Arginine methylation has been recognized as a post-translational modification with pleiotropic effects that span from regulation of transcription to metabolic processes that contribute to aberrant cell proliferation and tumorigenesis. This has brought significant attention to the development of therapeutic strategies aimed at blocking the activity of protein arginine methyltransferases (PRMTs), which catalyze the formation of various methylated arginine products on a wide variety of cellular substrates. GSK3368715 is a small molecule inhibitor of type I PRMTs currently in clinical development. Here, we evaluate the effect of type I PRMT inhibition on arginine methylation in normal human peripheral blood mononuclear cells and utilize a broad proteomic approach to identify type I PRMT substrates. This work identified heterogenous nuclear ribonucleoprotein A1 (hnRNP-A1) as a pharmacodynamic biomarker of type I PRMT inhibition. Utilizing targeted mass spectrometry (MS), methods were developed to detect and quantitate changes in methylation of specific arginine residues on hnRNP-A1. This resulted in the development and validation of novel MS and immune assays useful for the assessment of GSK3368715 induced pharmacodynamic effects in blood and tumors that can be applied to GSK3368715 clinical trials.