CSN5i-3
目录号 : GC34340
CSN5i-3是一种有效的，选择性和口服的CSN5抑制剂;抑制CSN催化的Cul1deneddylationIC50值为5.8nM。
Cas No.:2375740-98-8
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >99.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
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Cell experiment: |
Cell viability is measured using the CellTiter-Glo Assay. Cells (THP-1, HCT116, NCI-H2030 and TE-1) are treated with CSN5i-3 (1 nM, 10 nM, 100 nM, 1 μM, 10 μM) for 72 hours[1]. |
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Animal experiment: |
Mice[1]SU-DHL-1 xenografts were grown in SCID-bg mice and dosed by oral administration with either vehicle control or CSN5i-3 at the indicated doses (50 mg/kg BID, 100mg/kg QD) and schedules (3, 7, 10, 14 day). Tumour response is reported as percentage change in tumour volume at the last day of treatment relative to start of treatment. |
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References: [1]. Schlierf A, et al. Targeted inhibition of the COP9 signalosome for treatment of cancer. Nat Commun. 2016 Oct 24;7:13166. |
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CSN5i-3 is a potent, selective and orally available inhibitor of CSN5; inhibits CSN-catalysed Cul1 deneddylation with an IC50 value of 5.8 nM.
CSN5i-3 traps CRLs in the neddylated state, which leads to inactivation of a subset of CRLs by inducing degradation of their substrate recognition module[1].
CSN5i-3 shows a good pharmacokinetic profile. CSN5i-3 inhibits growth of human xenograft. Treatment with CSN5i-3 triggers the formation of cleaved PARP and cleaved caspase 3 indicative of apoptosis induction[1].
[1]. Schlierf A, et al. Targeted inhibition of the COP9 signalosome for treatment of cancer. Nat Commun. 2016 Oct 24;7:13166.
| Cas No. | 2375740-98-8 | SDF | |
| Canonical SMILES | O=C(C1=CC(C(F)F)=NN1C(C)C)NC2=CC(C3=CC=CC=C3)=C([C@@H]4N5C(CCC[C@@H]4O)=CN=C5)C=C2 | ||
| 分子式 | C28H29F2N5O2 | 分子量 | 505.56 |
| 溶解度 | DMSO: ≥ 100 mg/mL (197.80 mM) | 储存条件 | Store at -20°C, protect from light, stored under nitrogen |
| 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 | 1.978 mL | 9.89 mL | 19.78 mL |
| 5 mM | 0.3956 mL | 1.978 mL | 3.956 mL |
| 10 mM | 0.1978 mL | 0.989 mL | 1.978 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。
The novel Jab1 inhibitor CSN5i-3 suppresses cell proliferation and induces apoptosis in human breast cancer cells
Neoplasma 2019 May 23;66(3):481-486.PMID:30868895DOI:10.4149/neo_2018_181016N772.
Jab1 is a vital subunit of the CSN family and is reported to be overexpressed in numerous cancer types. Due to the importance of Jab1/CSN5 in cancer cell proliferation and survival, Jab1 is considered a promising therapeutic target. Therefore, we evaluated the anticancer effect of the novel Jab1 inhibitor CSN5i-3 in breast cancer cells. In our study, we found that Jab1 was overexpressed in breast cancer tissues and was correlated with poor prognosis in human breast cancer patients. An MTS assay revealed that CSN5i-3 suppressed cell proliferation in the breast cancer cell lines BT474 and SKBR3. We also found that CSN5i-3 significantly induced apoptosis and G1 phase cell cycle arrest in breast cancer cells. A mechanistic investigation revealed that CSN5i-3 inhibited Jab1 expression and increased the level of the apoptosis marker cleaved PARP and the cell-cycle-related protein p27 in BT474 and SKBR3 cells. A nude mouse xenograft model also indicated that CSN5i-3 exerted a potent anticancer effect in vivo. Overall, our study suggested that the Jab1 inhibitor CSN5i-3 might be a promising agent for the treatment of breast cancer in humans and should be studied further.
Adaptive exchange sustains cullin-RING ubiquitin ligase networks and proper licensing of DNA replication
Proc Natl Acad Sci U S A 2022 Sep 6;119(36):e2205608119.PMID:36037385DOI:10.1073/pnas.2205608119.
Cop9 signalosome (CSN) regulates the function of cullin-RING E3 ubiquitin ligases (CRLs) by deconjugating the ubiquitin-like protein NEDD8 from the cullin subunit. To understand the physiological impact of CSN function on the CRL network and cell proliferation, we combined quantitative mass spectrometry and genome-wide CRISPR interference (CRISPRi) and CRISPR activation (CRISPRa) screens to identify factors that modulate cell viability upon inhibition of CSN by the small molecule CSN5i-3. CRL components and regulators strongly modulated the antiproliferative effects of CSN5i-3, and in addition we found two pathways involved in genome integrity, SCFFBXO5-APC/C-GMNN and CUL4DTL-SETD8, that contribute substantially to the toxicity of CSN inhibition. Our data highlight the importance of CSN-mediated NEDD8 deconjugation and adaptive exchange of CRL substrate receptors in sustaining CRL function and suggest approaches for leveraging CSN inhibition for the treatment of cancer.
Prognostic and therapeutic significance of COP9 signalosome subunit CSN5 in prostate cancer
Oncogene 2022 Jan;41(5):671-682.PMID:34802033DOI:10.1038/s41388-021-02118-4.
Chromosome 8q gain is associated with poor clinical outcomes in prostate cancer, but the underlying biological mechanisms remain to be clarified. CSN5, a putative androgen receptor (AR) partner that is located on chromosome 8q, is the key subunit of the COP9 signalosome, which deactivates ubiquitin ligases. Deregulation of CSN5 could affect diverse cellular functions that contribute to tumor development, but there has been no comprehensive study of its function in prostate cancer. The clinical significance of CSN5 amplification/overexpression was evaluated in 16 prostate cancer clinical cohorts. Its oncogenic activity was assessed by genetic and pharmacologic perturbations of CSN5 activity in prostate cancer cell lines. The molecular mechanisms of CSN5 function were assessed, as was the efficacy of the CSN5 inhibitor CSN5i-3 in vitro and in vivo. Finally, the transcription cofactor activity of CSN5 in prostate cancer cells was determined. The prognostic significance of CSN5 amplification and overexpression in prostate cancer was independent of MYC amplification. Inhibition of CSN5 inhibited its oncogenic function by targeting AR signaling, DNA repair, multiple oncogenic pathways, and spliceosome regulation. Furthermore, inhibition of CSN5 repressed metabolic pathways, including oxidative phosphorylation and glycolysis in AR-negative prostate cancer cells. Targeting CSN5 with CSN5i-3 showed potent antitumor activity in vitro and in vivo. Importantly, CSN5i-3 synergizes with PARP inhibitors to inhibit prostate cancer cell growth. CSN5 functions as a transcription cofactor to cooperate with multiple transcription factors in prostate cancer. Inhibiting CSN5 strongly attenuates prostate cancer progression and could enhance PARP inhibition efficacy in the treatment of prostate cancer.
CSN5 inhibition triggers inflammatory signaling and Rho/ROCK-dependent loss of endothelial integrity
Sci Rep 2019 May 31;9(1):8131.PMID:31148579DOI:10.1038/s41598-019-44595-4.
RhoGTPases regulate cytoskeletal dynamics, migration and cell-cell adhesion in endothelial cells. Besides regulation at the level of guanine nucleotide binding, they also undergo post-translational modifications, for example ubiquitination. RhoGTPases are ubiquitinated by Cullin RING ligases which are in turn regulated by neddylation. Previously we showed that inhibition of Cullin RING ligase activity by the neddylation inhibitor MLN4924 is detrimental for endothelial barrier function, due to accumulation of RhoB and the consequent induction of contractility. Here we analyzed the effect of pharmacological activation of Cullin RING ligases on endothelial barrier integrity in vitro and in vivo. CSN5i-3 induced endothelial barrier disruption and increased macromolecule leakage in vitro and in vivo. Mechanistically, CSN5i-3 strongly induced the expression and activation of RhoB and to lesser extent of RhoA in endothelial cells, which enhanced cell contraction. Elevated expression of RhoGTPases was a consequence of activation of the NF-κB pathway. In line with this notion, CSN5i-3 treatment decreased IκBα expression and increased NF-κB-mediated ICAM-1 expression and consequent adhesion of neutrophils to endothelial cells. This study shows that sustained neddylation of Cullin RING-ligases leads to activation the NF-κB pathway in endothelial cells, elevated expression of RhoGTPases, Rho/ROCK-dependent activation of MLC and disruption of the endothelial barrier.
Targeted inhibition of the COP9 signalosome for treatment of cancer
Nat Commun 2016 Oct 24;7:13166.PMID:27774986DOI:10.1038/ncomms13166.
The COP9 signalosome (CSN) is a central component of the activation and remodelling cycle of cullin-RING E3 ubiquitin ligases (CRLs), the largest enzyme family of the ubiquitin-proteasome system in humans. CRLs are implicated in the regulation of numerous cellular processes, including cell cycle progression and apoptosis, and aberrant CRL activity is frequently associated with cancer. Remodelling of CRLs is initiated by CSN-catalysed cleavage of the ubiquitin-like activator NEDD8 from CRLs. Here we describe CSN5i-3, a potent, selective and orally available inhibitor of CSN5, the proteolytic subunit of CSN. The compound traps CRLs in the neddylated state, which leads to inactivation of a subset of CRLs by inducing degradation of their substrate recognition module. CSN5i-3 differentially affects the viability of tumour cell lines and suppresses growth of a human xenograft in mice. Our results provide insights into how CSN regulates CRLs and suggest that CSN5 inhibition has potential for anti-tumour therapy.