 
        
        
        Silmitasertib 是一种选择性的 CK2 抑制剂,对 CK2 具有高亲和力,对 CK2α 和 CK2α' 的 IC50值均为 1 nM。Silmitasertib 具有抗肿瘤和抗炎作用,主要用于癌症和炎症相关疾病的研究。
 
                                 
                                
                            

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| 产品名称 | CK1 ↓ ↑ | CK2 ↓ ↑ | 其他靶点 | 纯度 | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PF-670462 2HCl | ++++ CK1δ, IC50: 13 nM CK1ε, IC50: 90 nM | 99%+ | |||||||||||||||||
| D4476 | ++ CK1 from Schizosaccharomyces pombe, IC50: 200 nM CK1δ, IC50: 300 nM | 99% | |||||||||||||||||
| SR-3029 | +++ CK1δ, IC50: 44 nM CK1ε, IC50: 260 nM | 99%+ | |||||||||||||||||
| IWP-2 | +++ M82FCK1δ, IC50: 40 nM | Wnt | 99% | ||||||||||||||||
| LY364947 | ++ CK1δ, IC50: 0.22 μM | 98% | |||||||||||||||||
| TA-01 | ++++ CK1δ, IC50: 6.8 nM CK1ε, IC50: 6.4 nM | p38 MAPK | 99%+ | ||||||||||||||||
| IC261 | + CK1, IC50: 16 μM | 98% | |||||||||||||||||
| PF-4800567 | +++ casein kinase 1 epsilon, IC50: 32 nM casein kinase 1 delta, IC50: 711 nM | 99%+ | |||||||||||||||||
| CK1-IN-1 | ++++ CK1δ, IC50: 15 nM CK1ε, IC50: 16 nM | 99% | |||||||||||||||||
| Longdaysin | + CKIα, IC50: 5.6 μM CKIδ, IC50: 8.8 μM | 99%+ | |||||||||||||||||
| Silmitasertib | ++++ CK2, IC50: 1 nM | 99%+ | |||||||||||||||||
| Ellagic acid (hydrate) | +++ CK2, IC50: 0.04 μM | PKA | 95+% | ||||||||||||||||
| DMAT | +++ CK2, Ki: ~40 nM | 99% | |||||||||||||||||
| Hematein | ++ CK2, IC50: 0.55 μM | 40% | |||||||||||||||||
| Silmitasertib sodium salt | ++++ CK2α', IC50: 1 nM CK2α, IC50: 1 nM | 99%+ | |||||||||||||||||
| LY294002 | +++ CK2, IC50: 98 nM | 99%+ | |||||||||||||||||
| A-3 HCl | + CK1, Ki: 80 μM | ++ CK2, Ki: 5.1 μM | PKA,MLCK,PKC | 98+% | |||||||||||||||
| TBB | + CK1, Ki: 47 μM | ++ CK2, Ki: 0.4 μM | 98% | ||||||||||||||||
| TTP 22 | ++ CK2, IC50: 100 nM | 98%+ | |||||||||||||||||
| DRB | ✔ | 99%+ | |||||||||||||||||
| BioE-1115 | + CK2α, IC50: 10 μM | 99%+ | |||||||||||||||||
| (E/Z)-GO289 | ++++ CK2, IC50: 7 nM | 99%+ | |||||||||||||||||
| 1. 鼠标悬停在“+”上可以显示相关IC50的具体数值。"+"越多,抑制作用越强。2. "✔"表示该化合物对相应的亚型有抑制作用,但抑制强度暂时没有相关数据。 | |||||||||||||||||||
| 靶点 | 
 | 
| 描述 | Silmitasertib (CX-4945) leads to cell-cycle arrest and selectively induces apoptosis in cancer cells compared to normal cells. This action is associated with the attenuation of PI3K/Akt signaling and the antiproliferative activity of Silmitasertib is linked to the expression levels of the CK2α catalytic subunit[1]. When combined with PS-341, Silmitasertib prevents leukemic cells from initiating a functional unfolded protein response (UPR) to counteract PS-341-induced proteotoxic stress in the ER lumen. It also reduces the expression of the pro-survival ER chaperone BIP/Grp78[2]. Silmitasertib induces cytotoxicity and apoptosis and exerts antiproliferative effects in hematological tumors. It achieves these effects by downregulating CK2 expression and inhibiting the activation of CK2-mediated PI3K/Akt/mTOR signaling pathways[3]. | 
| 体内研究 | Administered orally at doses of 25 or 75 mg/kg, Silmitasertib is well-tolerated and shows significant antitumor activity in murine xenograft models. This efficacy is accompanied by reductions in the biomarker phospho-p21 (T145)[1]. | 
| 体外研究 | Silmitasertib (CX-4945) leads to cell-cycle arrest and selectively induces apoptosis in cancer cells compared to normal cells. This action is associated with the attenuation of PI3K/Akt signaling and the antiproliferative activity of Silmitasertib is linked to the expression levels of the CK2α catalytic subunit[1]. When combined with PS-341, Silmitasertib prevents leukemic cells from initiating a functional unfolded protein response (UPR) to counteract PS-341-induced proteotoxic stress in the ER lumen. It also reduces the expression of the pro-survival ER chaperone BIP/Grp78[2]. Silmitasertib induces cytotoxicity and apoptosis and exerts antiproliferative effects in hematological tumors. It achieves these effects by downregulating CK2 expression and inhibiting the activation of CK2-mediated PI3K/Akt/mTOR signaling pathways[3]. | 
| 作用机制 | CX-4945 acts as an ATP-competitive inhibitor of both isoforms of CK2 catalytic subunits, CK2α and CK2α’, directly blocking the phosphorylation of Akt at Serine 129 in PI3K/Akt signaling pathway. | 
| Concentration | Treated Time | Description | References | |
| U87MG | 25 μM | 6 h | To study the effect of CK2 inhibitor on ECE1c stability, results showed that ECE1cK6R exhibited enhanced stability both in the presence and absence of silmitasertib. | Cells. 2023 Feb 3;12(3):506. | 
| T98G | 25 μM | 6 h | To study the effect of CK2 inhibitor on ECE1c stability, results showed that ECE1cK6R exhibited enhanced stability both in the presence and absence of silmitasertib. | Cells. 2023 Feb 3;12(3):506. | 
| U251 | 25 μM | 6 h | To study the effect of CK2 inhibitor on ECE1c stability, results showed that ECE1cK6R exhibited enhanced stability both in the presence and absence of silmitasertib. | Cells. 2023 Feb 3;12(3):506. | 
| MCF-7 | 1 μM | 24 h | To evaluate the effect of Silmitasertib on cell viability. Results showed a significant reduction in cell viability. | PLoS Pathog. 2019 May 22;15(5):e1007769. | 
| HCT-116 | 2 μM | 48 h | To assess the impact of Silmitasertib on apoptosis. Results indicated an increase in apoptotic cells. | PLoS Pathog. 2019 May 22;15(5):e1007769. | 
| H1299 cells | 37 μM | 1 h | To investigate the effect of Silmitasertib on N protein LLPS, results showed that Silmitasertib had no detectable effect on N protein LLPS. | Nat Commun. 2021 Apr 9;12(1):2114. | 
| PDX cells (WVUSCC-AR2, WVUSCC-AR5) | 0.5-10 µM | 24 h | To evaluate the effect of Silmitasertib on PDX cell invasion, results showed that Silmitasertib significantly reduced extracellular matrix (ECM) degradation and invadopodia formation. | Mol Cancer Res. 2019 Apr;17(4):987-1001. | 
| Cal-27 | 10, 20, 40 µM | 24, 48 h | To test the effect of Silmitasertib combined with DDP treatment on the viability of Cal-27 cells, the results showed that the combined treatment significantly reduced cell viability. | Drug Deliv. 2021 Dec;28(1):2480-2494. | 
| UM1 | 10, 20, 40 µM | 24, 48 h | To test the effect of Silmitasertib combined with DDP treatment on the viability of UM1 cells, the results showed that the combined treatment significantly reduced cell viability. | Drug Deliv. 2021 Dec;28(1):2480-2494. | 
| HSC-3 | 10, 20, 40 µM | 12 h | To observe the effect of Silmitasertib on macropinocytosis in HSC-3 cells, the results showed that Silmitasertib induced cell vacuolation. | Drug Deliv. 2021 Dec;28(1):2480-2494. | 
| HSC-4 | 10, 20, 40 µM | 12 h | To observe the effect of Silmitasertib on macropinocytosis in HSC-4 cells, the results showed that Silmitasertib induced cell vacuolation. | Drug Deliv. 2021 Dec;28(1):2480-2494. | 
| HNSCC cells (OSC19, UMSCC1, MDA1586) | 0.5-10 µM | 12-24 h | To evaluate the effect of Silmitasertib on HNSCC cell invasion, results showed that Silmitasertib significantly reduced extracellular matrix (ECM) degradation and invadopodia formation. | Mol Cancer Res. 2019 Apr;17(4):987-1001. | 
| Administration | Dosage | Frequency | Description | References | ||
| BALB/c nude mice | Ovarian cancer xenograft model | Oral | 60 mg/kg | Twice daily, until the end of the experiment | Silmitasertib significantly inhibited tumor growth | Cell Death Dis. 2025 Jan 18;16(1):27 | 
| Mice | Xenograft model | Oral | 50 mg/kg | Once daily for 21 days | To determine the efficacy of Silmitasertib in reducing tumor growth. Results showed a significant reduction in tumor volume. | PLoS Pathog. 2019 May 22;15(5):e1007769. | 
| Mice | HNSCC orthotopic tongue tumor model | Oral | 50 mg/kg | Twice daily for three weeks | To evaluate the effect of Silmitasertib on HNSCC orthotopic tongue tumor invasion, results showed that Silmitasertib significantly reduced tumor invasion and perineural invasion. | Mol Cancer Res. 2019 Apr;17(4):987-1001. | 
| Nude mice | Cal-27 xenograft model | Peritumoral injection | 60 mg/kg | Once every 5 days for 4 weeks | To verify the tumor suppressive effect of Silmitasertib combined with DDP in vivo, the results showed that the combined treatment significantly inhibited tumor growth. | Drug Deliv. 2021 Dec;28(1):2480-2494. | 
| Dose | Mice: 25 mg/kg - 75 mg/kg[2] (p.o.) | ||||||||||||||||||||||||||||||||||||
| Administration | p.o. | ||||||||||||||||||||||||||||||||||||
| Pharmacokinetics | 
 | 
| NCT号 | 适应症或疾病 | 临床期 | 招募状态 | 预计完成时间 | 地点 | 
| NCT00891280 | Advanced Solid Tumors ... 展开 >> Breast Cancer Inflammatory Breast Cancer Castleman's Disease Multiple Myeloma 收起 << | Phase 1 | Unknown | December 2011 | United States, Arizona ... 展开 >> Mayo Clinic Arizona Recruiting Scottsdale, Arizona, United States, 85259 Contact: Clinical Trials Office Mayo Clinic Cancer Center 507-538-7623 Principal Investigator: Donald Northfelt, MD United States, Colorado Front Range Cancer Specialists Recruiting Fort Collins, Colorado, United States, 80528 Contact: P. Zeller 970-212-7609 Principal Investigator: Robert F Marschke, MD Front Range Cancer Specialists Recruiting Loveland, Colorado, United States, 80528 Contact: Pat Zeller 970-212-7609 Principal Investigator: R. McFarland, MD United States, Texas U T M D Anderson Cancer Center Recruiting Houston, Texas, United States, 77030 Contact: R. Alvarez, MD ralvarez@mdanderson.org Principal Investigator: R. Alvarez, MD 收起 << | 
| NCT03571438 | Kidney Cancer | Not Applicable | Recruiting | September 30, 2024 | France ... 展开 >> Grenoble Alps Hospital Recruiting Grenoble, France, 38043 Contact: Jean-Luc Descotes, PU-PH 收起 << | 
| NCT02128282 | Cholangiocarcinoma | Phase 1 Phase 2 | Recruiting | November 2021 | United States, Arizona ... 展开 >> Mayo Clinic Recruiting Scottsdale, Arizona, United States, 85259-5499 Contact: Mayo Clinic Clinical Trials Office 855-776-0015 Principal Investigator: Mitesh Borad, M.D. United States, Colorado University of Colorado- Denver Recruiting Aurora, Colorado, United States, 80045 Contact: Amy Szilard 720-848-0702 Amy.Szilard@ucdenver.edu Principal Investigator: Sarah (Lindsey) Davis, MD United States, Florida Mayo Clinic Recruiting Jacksonville, Florida, United States, 32224 Contact: Mayo Clinic Clinical Trials Office 855-776-0015 Principal Investigator: Kabir Mody, MD United States, Minnesota Mayo Clinic Recruiting Rochester, Minnesota, United States, 55905 Contact: Mayo Clinic Clinical Trials Office 855-776-0015 Principal Investigator: Joleen Hubbard, MD United States, Texas Texas Oncology - Baylor Charles A. Sammons Cancer Center Recruiting Dallas, Texas, United States, 75246 Contact: Tammy Carmical, RN 214-370-1937 tammy.carmical@usoncology.com Principal Investigator: Carlos Becerra, M.D. Texas Oncology-Tyler Recruiting Tyler, Texas, United States, 75702 Contact: Karen Poe, RN 903-579-9869 karen.poe@usoncology.com Principal Investigator: Donald A Richards, M.D. Korea, Republic of Asan Medical Center Recruiting Seoul, Songpa-gu, Korea, Republic of, 138-736 Contact: Heung-Moon Chang, MD 82-3010-3219 ext 3210 changhm@amc.seoul.kr Contact: Seok kyung Jeong 82-2-3010-5634 jsk0213@amc.seoul.kr Samsung Medical Center Recruiting Seoul, Korea, Republic of Contact: Eunyou Lee 82-2-3410-0955 ley0709@samsung.com Principal Investigator: Joon Oh Park, MD Seoul National University Hospital Recruiting Seoul, Korea, Republic of Contact: Myoungsun Choi 82-2-2072-7612 iamyou3@hanmail.net Principal Investigator: Do-Youn Oh, MD Severance Hospital, Yonsei University Health System Recruiting Seoul, Korea, Republic of Contact: So Young Hwang 82-2-2228-8180 syhwang@yuhs.ac Principal Investigator: Sun Young Rha, MD Taiwan China Medical University Hospital Recruiting Taichung City, Taiwan Contact: Pei-Chen Hsu +886-4-2205-2121 peggyshiu0807@gmail.com Principal Investigator: Li-Yuan Bai, M.D. 收起 << | 
| 计算器 | ||||
| 存储液制备 |  | 1mg | 5mg | 10mg | 
| 1 mM 5 mM 10 mM | 2.86mL 0.57mL 0.29mL | 14.30mL 2.86mL 1.43mL | 28.59mL 5.72mL 2.86mL | |
| CAS号 | 1009820-21-6 | 
| 分子式 | C19H12ClN3O2 | 
| 分子量 | 349.77 | 
| SMILES Code | O=C(C1=CC=C2C(N=C(NC3=CC=CC(Cl)=C3)C4=C2C=NC=C4)=C1)O | 
| MDL No. | MFCD13184796 | 
| 别名 | CX-4945 | 
| 运输 | 蓝冰 | 
| InChI Key | MUOKSQABCJCOPU-UHFFFAOYSA-N | 
| Pubchem ID | 24748573 | 
| 存储条件 | In solvent -20°C: 3-6个月 -80°C: 12个月 Pure form Keep in dark place, sealed in dry, 2-8°C | 
| 溶解方案 | DMSO: 35 mg/mL(100.07 mM),注意:DMSO长时间开封后,会吸水并导致溶解能力下降,请避免使用长期开封的DMSO 0.1 M NaOH: 30 mg/mL(85.77 mM),配合低频超声,并调节pH至9 以下溶解方案都请先按照体外实验的方式配制澄清的储备液,再依次添加助溶剂: ——为保证实验结果的可靠性,澄清的储备液可以根据储存条件,适当保存;体内实验的工作液,建议现用现配,当天使用; 以下溶剂前显示的百分比是指该溶剂在终溶液中的体积占比;如在配制过程中出现沉淀、析出现象,可以通过加热和/或超声的方式助溶 
 
 
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