- E-64-c
- Cathepsin G Inhibitor I
- CA 074
- L 006235
- E 64d
- E-64
| CA-074 MeCathepsin B inhibitor |
Sample solution is provided at 25 µL, 10mM.
- 1. Chen CH, Bhasin S, et al. "Study of Cathepsin B inhibition in VEGFR TKI treated human renal cell carcinomaxenografts." Oncogenesis. 2019 Feb 22;8(3):15.PMID:30796200
- 2. Xu Z, Zhang Y, et al. "Novelhalf-sandwich iridium OˆC (carbene)-Complexes: In vitro and in vivo tumor growth suppression and pro-apoptosis via ROS-mediated cross-talk between mitochondria and lysosomes." Cancer Lett. 2019 Apr 10;447:75-85.PMID:30673591
- 3. Yan X, Li F, et al. "Interleukin-1beta released by microglia initiates the enhanced glutamatergic activity in the spinal dorsal horn during paclitaxel-associated acute pain syndrome." Glia. 2018 Dec 21.PMID:30578561
- 4. Gonzalez EA, Martins GR, et al. "Cathepsin B inhibition attenuates cardiovascular pathology inmucopolysaccharidosis I mice." Life Sci. 2018 Mar 1;196:102-109.PMID:29366749
- 5. Shao G, Wang R, et al. "The E3 ubiquitin ligase NEDD4 mediates cell migration signaling of EGFR in lung cancer cells." Mol Cancer. 2018 Feb 19;17(1):24.PMID:29455656
- 6. Clerc P, Jeanjean P, et al. "Targeted Magnetic Intra-Lysosomal Hyperthermia produces lysosomal reactive oxygen species and causes Caspase-1 dependent cell death." J Control Release. 2017 Dec 1;270:120-134.PMID:29203413
Quality Control & MSDS
- View current batch:
- Purity = 98.06%
- COA (Certificate Of Analysis)
- HPLC
- NMR (Nuclear Magnetic Resonance)
- MSDS (Material Safety Data Sheet)
- Datasheet
Chemical structure
Related Biological Data
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| Description | CA-074 Me is a selective and cell-permeable inhibitor of cathepsin B. | |||||
| Targets | cathepsin B | |||||
| IC50 | 2.2 nM | |||||
| Cell experiment: [1] | |
Cell lines | McNtcp.24 cells |
Preparation method | The solubility of this compound in DMSO is >10 mM. General tips for obtaining a higher concentration: Please warm the tube at 37 °C for 10 minutes and/or shake it in the ultrasonic bath for a while.Stock solution can be stored below -20°C for several months. |
Reaction Conditions | 0.1 µM, 2 hours |
Applications | Cells were incubated in medium alone or with 50 µM GCDC in the absence or presence of 0.1 µM CA-074 Me. Apoptosis was quantitated after 2 h of incubation. The cathepsin B inhibitor CA-074 Me reduced the GCDC-mediated increase in cathepsin B activity and apoptosis in McNtcp.24 cells. The result confirms that cathepsin B activity increases and contributes to bile salt–mediated apoptosis in primary rat hepatocytes. |
| Animal experiment: [2] | |
Animal models | CatB+/+ mice |
Dosage form | Intraperitoneal injection, 4 mg/100g |
Applications | Serum ALT levels after TNF-α-treatment were significantly reduced in catB+/+ mice pretreated with CA-074 Me compared to saline-injected controls. In contrast, liver architecture was preserved and only moderate damage was observed in catB+/+ mice pretreated with CA-074 Me. These results suggest that pharmacological inhibition of cat B may partially attenuate TNF-α-induced liver damage. |
Other notes | Please test the solubility of all compounds indoor, and the actual solubility may slightly differ with the theoretical value. This is caused by an experimental system error and it is normal. |
References: [1] Faubion W A, Guicciardi M E, Miyoshi H, et al. Toxic bile salts induce rodent hepatocyte apoptosis via direct activation of Fas. The Journal of clinical investigation, 1999, 103(1): 137-145. [2] Guicciardi M E, Miyoshi H, Bronk S F, et al. Cathepsin B knockout mice are resistant to tumor necrosis factor-α-mediated hepatocyte apoptosis and liver injury: implications for therapeutic applications. The American journal of pathology, 2001, 159(6): 2045-2054. | |
CA-074 Me Dilution Calculator
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CA-074 Me Molarity Calculator
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| Cas No. | 147859-80-1 | SDF | Download SDF |
| Synonyms | N/A | ||
| Chemical Name | methyl (2S)-1-[(2S)-3-methyl-2-[[(2S,3S)-3-(propylcarbamoyl)oxirane-2-carbonyl]amino]pentanoyl]pyrrolidine-2-carboxylate | ||
| Canonical SMILES | CCCNC(=O)C1C(O1)C(=O)NC(C(C)CC)C(=O)N2CCCC2C(=O)OC | ||
| Formula | C19H31N3O6 | M.Wt | 397.5 |
| Solubility | ≥19.875mg/mL in DMSO | Storage | Store at -20°C |
| Physical Appearance | A yellow oil | Shipping Condition | Evaluation sample solution : ship with blue ice.All other available size:ship with RT , or blue ice upon request |
| General tips | For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months. | ||
CA-074 Me is a membrane-permeable and selective inhibitor of cathepsin B with IC50 value of 36.3 nM [1, 2].
CA-074 Me is a methyl ester derivative of CA-074. In cultured human gingival fibroblasts, CA-074 Me exerted a 95% inhibition of cathepsin B and partial inhibition (54%) of the combined activities of cathepsins B and L. CA-074 Me was also found to inhibit cathespin L under reducing conditions. It inhibited the activity of purified human cathepsin L by more than 90% when the enzyme had been pre-incubated with 1.4 mM DTT or 4.2 mM GSH for 2 hours. Besides that, CA-074 Me completely inhibited cathepsin B in the presence of 1.4 mM DTT [2, 3].
References:[1] Wu X, Zhang L, Gurley E, et al. Prevention of free fatty acid–induced hepatic lipotoxicity by 18β-glycyrrhetinic acid through lysosomal and mitochondrial pathways. Hepatology, 2008, 47(6): 1905-1915.[2] Steverding D. The cathepsin B-selective inhibitors CA-074 and CA-074Me inactivate cathepsin L under reducing conditions. Open Enzyme Inhibition Journal, 2011, 4: 11-16.[3] Buttle D J, Murata M, Knight C G, et al. CA074 methyl ester: a proinhibitor for intracellular cathepsin B. Archives of biochemistry and biophysics, 1992, 299(2): 377-380.
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概括了以下四点:
1.在用完制冰机后需要将冰箱内的冰块清理干净。清洗制冰机时应关掉电源，不要用水管直接对准机身冲洗，用清水，加入适量中性洗涤剂(严禁用酸性、碱性等腐蚀性溶剂)擦拭机器围板和内胆，再用软布擦干净。
2.制冰机必须两个月旋开进水软管管头，清洗进水阀滤网，避免水中砂泥杂质堵塞进水口，而引起进水量变小，导致不制冰。
3.每二个月清扫冷凝器表面灰尘，冷凝散热不良会引起压缩机部件损坏。清扫时，使用吸尘器、小毛刷等清洗冷凝表面油尘，不能使用尖锐金属工具清扫，以免损坏冷凝器。
4.制冰机的水管、水槽、储冰箱及保护胶片要每两个月清洗一次。不使用时，应清洗干净，并用电吹风吹干冰模及箱内水分，放在无腐蚀气体及通风干燥的地方，避免露天存放。
不过制冰机里的冰不可以，那冰怎么得到呢？
protocol上面说在离心菌液的时候离心管里面要有1/2的冰啊，这个冰应该是碎冰而不是直接冻出来的整块的冰吧。
大家是怎么得到的呢？谢谢！！
谢谢各位！
