| 名稱 | BIIB021 |
| 描述 | BIIB021 (CNF2024) is an orally-available, fully synthetic inhibitor of HSP90(Ki=1.7 nM, EC50=38 nM). |
| 細(xì)胞實(shí)驗(yàn) | A modified tetrazolium salt assay is used to measure the IC50. Tumor cells are added to 96-well plates and propagated for 24 hours before BIIB021 addition. BIIB021 is added to the plated cells. DMSO (0.03-0.003%) is included as a vehicle control. After incubation phenazine methosulfate (stock concentration 1 mg/mL) and 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt (stock concentration 2 mg/mL) are mixed at a ratio of 1:20 and added to each well of a 96-well plate. Reduction of 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt gives rise to a soluble formazan product that is secreted into the culture medium. After 4 hours incubation, the formazan product is quantitated spectrophotometrically at a wavelength of 490 nm. Data are acquired using SOFTmaxPRO software, and 100% viability is defined as the A490 of DMSO-treated cells stained with 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt (the mean A490 of cells treated with DMSO at a range of 0.03-0.003%). Percent viability of each sample is calculated from the A490 values as follows: % viability = (A490 nm sample / A490 nm DMSO-treated cells × 100). The IC50 is defined as the concentration that gives rise to 50% inhibition of cell viabilit(Only for Reference) |
| 激酶實(shí)驗(yàn) | Hsp90 Binding Assay: For fluorescence polarization competition measurements, the FITC-geldanamycin probe (20 nM) is reduced with 2 mM TCEP at room temperature for 3 hours, after which the solution is aliquoted and stored at -80 °C until used. Recombinant human Hsp90α (0.8 nM) and reduced FITC-geldanamycin (2 nM) are incubated in a 96-well microplate at room temperature for 3 hours in the presence of assay buffer containing 20 mM HEPES (pH 7.4), 50 mM KCl, 5 mM MgCl2, 20 mM Na2MoO4, 2 mM DTT, 0.1 mg/mL BGG, and 0.1% (v/v) CHAPS. Following this preincubation, BIIB021 in 100% DMSO is then added to final concentrations of 0.2 nM to 10 μM (final volume 100 μL, 2% DMSO). The reaction is incubated for 16 hours at room temperature and fluorescence is then measured in an Analyst plate reader, excitation = 485 nm, emission = 535 nm. High and low controls contained no BIIB021 or no Hsp90, respectively. The data are fit to a four-parameter curve and IC50 is generated. |
| 體外活性 | 在多種移植瘤模型中,口服BIIB021能夠有效抑制腫瘤的生長.在L540cy腫瘤中,BIIB021（120 mg/kg ）,能夠抑制細(xì)胞的增殖. |
| 體內(nèi)活性 | 在多種腫瘤細(xì)胞中（IC50=0.06-0.31 μM）,BIIB021能夠抑制細(xì)胞生長,如BT474,MCF-7,N87,HT29,H1650,H1299,H69和H82。在霍奇金淋巴瘤細(xì)胞中（IC50=0.24-0.8 μM）,BIIB021抑制細(xì)胞增殖 ,如KM-H2,L428,L540,L540cy,L591,L1236和DEV。BIIB021誘導(dǎo)Hsp90蛋白（包括HER-2,Akt和Raf-1）的降解以及熱休克蛋白Hsp70和Hsp27的上調(diào)表達(dá)。 |
| 存儲條件 | Powder: -20°C for 3 years | In solvent: -80°C for 1 year
Shipping with blue ice/Shipping at ambient temperature. |
| 溶解度 | 10% DMSO+90% Saline : < 10 mg/mL (31.37 mM), Lower concentrations may be soluble, but exact solubility limit is unknown.
DMSO : 125 mg/mL (392.14 mM), Sonication is recommended.
10% DMSO+40% PEG300+5% Tween 80+45% Saline : 10 mg/mL (31.37 mM), Solution.
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| 關(guān)鍵字 | Inhibitor | inhibit | HSP90 | HSP | Heat shock proteins | CNF-2024 | CNF 2024 | BIIB021 | Autophagy |
| 相關(guān)產(chǎn)品 | Guanidine hydrochloride | Naringin | Aceglutamide | Alginic acid | Cysteamine hydrochloride | Hemin | Hydroxychloroquine | Sildenafil citrate | Stavudine | Ethoxyquin | Tamoxifen | Paeonol |
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