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受注：045-509-1970 |
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化学情報
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Synonyms | CB7630 Acetate | Storage (From the date of receipt) |
3 years -20°C powder 1 years -80°C in solvent |
| 化学式 | C26H33NO2 |
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| 分子量 | 391.55 | CAS No. | 154229-18-2 | |
| Solubility (25°C)* | 体外 | Ethanol | 78 mg/mL (199.2 mM) | |
| DMSO | Insoluble | |||
| Water | Insoluble | |||
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* <1 mg/ml means slightly soluble or insoluble. * Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations. |
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溶剤液（一定の濃度）を調合する
生物活性
| 製品説明 | Abiraterone Acetate is an acetate salt form of Abiraterone which is a steroidal cytochrome CYP17 inhibitor with IC50 of 72 nM in a cell-free assay. Abiraterone acetate is an oral androgen biosynthesis inhibitor. |
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| in vitro | Abiraterone shows a good complexation with the heme iron only in SM1. [1] Abiraterone blocks the synthesis of androgens by inhibiting CYP17A1. Abiraterone also blocks 3β-hydroxysteroid dehydrogenase (3βHSD), an enzyme that is absolutely required for the synthesis of biologically active androgens. Abiraterone inhibits conversion of DHEA to Δ4-androstenedione. Abiraterone inhibition of 3βHSD blocks DHT synthesis and the androgen receptor response. Abiraterone inhibits the conversion of Δ5-androstenediol to testosterone. [2] Abiraterone inhibits C17,20-lyase, with an IC50 of 5.8 nM, in rat testis microsomes. Abiraterone significantly inhibits testosterone secretion (−48%) and in turn increases LH concentration (192%). [3] Abiraterone inhibits in vitro proliferation and AR-regulated gene expression of AR-positive prostate cancer cells, which could be explained by AR antagonism in addition to inhibition of steroidogenesis. [4] |
| in vivo | Following intraperitoneal administration in a rodent model, abiraterone was found to have rapid deacetylation. When administered as its acetate pro-drug (CB 7630), it suppressed circulating testosterone to undetectable levels and markedly decreased the weights of androgen sensitive organs. Abiraterone is well tolerated and the mean elimination half-life of abiraterone in these studies was 27.6 h (thus supporting the use of once-daily dosing)[5]. Preclinical studies with abiraterone demonstrated reduction in androgen production downstream of CYP17 which resulted in decreased weight of the ventral prostate, testis, and seminal vesicles in mice[6]. |
| 特徴 | Abiraterone is a drug used in castration-resistant prostate cancer. |
プロトコル(参考用のみ)
| キナーゼアッセイ | C17,20-lyase activity assay | |
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| Microsomes are diluted to a final protein concentration of 50 μg/mL in the reaction mixture which contains 0.25 M sucrose, 20 mM Tris-HCl (pH 7.4), 10 mM G6P and 1.2 IU/mL G6PDH. After equilibration at 37 °C for 10 minutes, the reaction is initiated by addition of βNADP to obtain a final concentration of 0.6 mM. Prior to the distribution of 600 μL of the reaction mixture in each tube, test compounds are evaporated to dryness under a stream of nitrogen and then are incubated at 37 °C for 10 minutes. After incubation with Abiraterone, 500 μL of the reaction mixture is transferred to tubes containing 1 μM of the enzyme substrate, 17OHP. After a further 10 minutes incubation, tubes are placed on ice and the reaction is stopped by addition of 0.1 ml NaOH 1N. Tubes are deep-frozen and stored at -20 °C until assayed for Δ4A levels. A Δ4A RIA is developed and automated on a microplate format in our laboratory using a specific antibody against Δ4A and instructions provided by Biogenesis. The separation of free and bound antigen is achieved with a dextran-coated charcoal suspension. After centrifugation, aliquots of the clear supernatant are counted in duplicates in a liquid scintillation counter. The Δ4A concentrations of unknown samples are determined from the standard curve. The detection limit is 0.5 ng/mL and the within and between assay coefficients of variation are 10.7 and 17.6%, respectively at an assay value of 13 ng/mL. The rate of enzymatic reaction is expressed as pmol of Δ4A formed per 10 minutes and per mg of protein. The value of maximum activity without inhibitor (control) is set at 100%. The IC50 values are calculated using non-linear analysis from the plot of enzyme activity (%) against log of inhibitor concentration. | ||
| 細胞アッセイ | 細胞株 | LNCaP and VCaP cells |
| 濃度 | 0 μM -10 μM | |
| 反応時間 | 24 hours and 96 hours | |
| 実験の流れ | LNCaP and VCaP cells are seeded in 96-well plates and grown in CSS-supplemented phenol red-free or FBS-supplemented media for 7 days. Cells are treated with Abiraterone at 24 hours and 96 hours after plating and cell viability is determined on day 7 by adding CellTiter Glo and measuring luminescence. |
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| 動物実験 | 動物モデル | Male NOD/SCID mice with LAPC4 cells |
| 投薬量 | 0.5 mmol/kg/d | |
| 投与方法 | Administered via s.c. | |
参考
カスタマーフィードバック
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Data from [Data independently produced by Endocrinology, 2014, 155(2), 358-69]
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Data from [Data independently produced by Prostate, 2013, 74, 235-49]
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Data from [Data independently produced by , , Br J Cancer, 2018, doi:10.1038/s41416-018-0158-y]
Selleckの高級品が、幾つかの出版された研究調査結果（以下を含む）で使われた：
| Plk1 Inhibitors and Abiraterone Synergistically Disrupt Mitosis and Kill Cancer Cells of Disparate Origin Independently of Androgen Receptor Signaling [ Cancer Res, 2023, 83(2):219-238] | PubMed: 36413141 |
| Androgen receptor blockade resistance with enzalutamide in prostate cancer results in immunosuppressive alterations in the tumor immune microenvironment [ J Immunother Cancer, 2023, 11(5)e006581] | PubMed: 37147019 |
| Allosteric inhibition of HSP70 in collaboration with STUB1 augments enzalutamide efficacy in antiandrogen resistant prostate tumor and patient-derived models [ Pharmacol Res, 2023, 189:106692] | PubMed: 36773708 |
| Novel inhibition of AKR1C3 and androgen receptor axis by PTUPB synergizes enzalutamide treatment in advanced prostate cancer [ Oncogene, 2023, 42(9):693-707] | PubMed: 36596844 |
| Loss of Long Noncoding RNA NXTAR in Prostate Cancer Augments Androgen Receptor Expression and Enzalutamide Resistance [ Cancer Res, 2022, 82(1):155-168] | PubMed: 34740892 |
| miR-143 mediates abiraterone acetate resistance by regulating the JNK/Bcl-2 signaling pathway in prostate cancer [ J Cancer, 2022, 13(15):3652-3659] | PubMed: 36606191 |
| Abiraterone acetate induces CREB1 phosphorylation and enhances the function of the CBP-p300 complex, leading to resistance in prostate cancer cells [ Clin Cancer Res, 2021, clincanres.4391.2020] | PubMed: 33495313 |
| Antiproliferative, proapoptotic, and tumor-suppressing effects of the novel anticancer agent alsevirone in prostate cancer cells and xenografts [ Arch Pharm (Weinheim), 2021, e2100316] | PubMed: 34668210 |
| Stepwise binding of inhibitors to human cytochrome P450 17A1 and rapid kinetics of inhibition of androgen biosynthesis [ J Biol Chem, 2021, 297(2):100969] | PubMed: 34273352 |
| Overcoming prostate cancer drug resistance with a novel organosilicon small molecule [ Neoplasia, 2021, 23(12):1261-1274] | PubMed: 34781084 |
長期の保管のために-20°Cの下で製品を保ってください。
人間や獣医の診断であるか治療的な使用のためにでない。
各々の製品のための特定の保管と取扱い情報は、製品データシートの上で示されます。大部分のSelleck製品は、推薦された状況の下で安定です。製品は、推薦された保管温度と異なる温度で、時々出荷されます。長期の保管のために必要とされてそれと異なる温度で、多くの製品は、短期もので安定です。品質を維持するが、夜通しの積荷のために最も経済的な貯蔵状況を用いてあなたの送料を保存する状況の下に、製品が出荷されることを、我々は確実とします。製品の受領と同時に、製品データシートの上で貯蔵推薦に従ってください。