17-DMAG (Alvespimycin) HCl 化学構造
分子量: 653.21

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製品説明

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    HSP (e.g. HSP90)製品生物活性の比較
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製品の説明

生物活性

製品説明 17-DMAG (Alvespimycin) HClは、62nMのIC50による強力なHsp90阻害剤です。
ターゲット HSP90
IC50 62 nM [1]
In vitro試験 17-DMAG displays ~2 times potency against human Hsp90 than 17-AAG, with IC50 of 62 nM versus 119 nM. In SKBR3 and SKOV3 cells which over-express Hsp90 client protein Her2, 17-DMAG causes down-regulation of Her2 with EC50 of 8 nM and 46 nM, respectively, as well as induction of Hsp70 with EC50 of 4 nM and 14 nM, respectively, leading to significant cytotoxicity with GI50 of 29 nM and 32 nM, respectively, consistent with Hsp90 inhibition. [1] 17-DMAG in combination with vorinostat synergistically induces apoptosis of the cultured MCL cells as well as primary MCL cells, more potently than either agent alone, by markedly attenuating the levels of cyclin D1 and CDK4, as well as of c-Myc, c-RAF and Akt. [3] In contrast to 17-AAG which is only active for IKKβ in chronic lymphocytic leukemia (CLL) cells, 17-DMAG treatment effectively leads to depletion of the Hsp90 client protein, resulting in diminished NF-κB p50/p65 DNA binding, decreased NF-κB target gene transcription, and caspase-dependent apoptosis. By targeting the NF-κB family, 17-DMAG selectively mediates dose- and time-dependent cytotoxicity against CLL cells, but not normal T cells or NK cells important for immune surveillance. [5]
In vivo試験 17-DMAG treatment at 5 mg/kg or 25 mg/kg thrice per week significantly reduces tumor growth of TMK-1 xenografts, by significantly reducing vessel area and numbers of proliferating tumor cells in sections. [2] Consistent the inhibition of FAK signaling in vivo, 17-DMAG treatment at 25 mg/kg three times a week significantly suppresses tumor growth, and metastasis of ME180 and SiHa xenografts in mice. [4] Administration of 17-DMAG at 10 mg/kg for 16 days significantly decreases the white blood cell count and prolongs the survival in a TCL1-SCID transplant mouse model. [5]
臨床試験 A Phase I study of 17-DMAG in treating patients with an advanced solid tumor or lymphoma has been completed. A Phase I study of the combination of intravenous 17-DMAG, Trastuzumab with or without Paclitaxel in patients with advanced solid tumor malignanci
特集 A synthetic derivative Geldanamycin, with lower hepatotoxicity than parent antibiotic & higher potency and bioavailability than the similar derivative 17-AAG.

プロトコル (参考用のみ)

キナーゼアッセイ: [1]

Fluorescence polarization (FP)-based competition binding assay This assay utilizes a boron difluoride dipyrromethene (BODIPY) labeled geldanamycin analogue (BODIPY-AG) as a probe and measured fluorescence polarization upon binding of the probe to a protein. Native human Hsp90 protein (α + β isoforms) is isolated from HeLa cells. BODIPY-AG solution is freshly prepared in FP assay buffer (20 mM HEPES-KOH, pH 7.3, 1.0 mM EDTA, 100 mM KCl, 5.0 mM MgCl2, 0.01% NP-40, 0.1 mg/mL fresh bovine γ-globulin (BGG), 1.0 mM fresh DTT, and protease inhibitor from stock solution in DMSO. Competition curves are obtained by mixing 10 μL each of a solution containing BODIPY-AG and Hsp90, and a serial dilution of 17-DMAG freshly prepared in FP assay buffer from stock solution in DMSO. Final concentrations are 10 nM BODIPY-AG, 40 or 60 nM Hsp90, varying concentration of 17-DMAG (0.10 nM-10 μM), and ≤0.25% DMSO in a 384-well microplate. After 3 hours incubation at 30 °C, fluorescence anisotropy (γEx = 485 nm, γEm = 535 nm) is measured on an EnVision 2100 multilabel plate reader. IC50 value of 17-DMAG is obtained from the competition curves.

細胞アッセイ: [5]

細胞株 Chronic lymphocytic leukemia (CLL)
濃度 Dissolved in DMSO, final concentrations ~1 μM
反応時間 24, or 48 hours
実験の流れ Cells are exposed to various concentrations of 17-DMAG for 24, or 48 hours. For the assessment of cytotoxicity, MTT reagent is then added, and plates are incubated for an additional 24 hours before spectrophotometric measurement. Apoptosis is determined by staining with annexin V-fluorescein isothiocyanate and propidium iodide (PI).

動物実験: [5]

動物モデル SCID mice engrafted with TCL1 leukemia cells
製剤 Dissolved in DMSO
投薬量 10 mg/kg
投与方法 Intraperitoneal injection 5 times per week

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)

SpeciesMouseRatRabbitGuinea pigHamsterDogMonkeyBaboon
Weight (kg)0.020.151.80.40.0810312
Body Surface Area (m2)0.0070.0250.150.050.020.50.240.6
Km factor361285201220
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Rat dose (mg/kg) = mouse dose (22.4 mg/kg) ×  mouse Km(3)  = 11.2 mg/kg
rat Km(6)
1

参考

化学情報

Download 17-DMAG (Alvespimycin) HCl SDF
分子量 653.21
化学式

C32H48N4O8•HCl

CAS No. 467214-21-7
保管 3年-20℃
2年-80℃in solvent
別名 NSC 707545,BMS 826476 HCl,KOS 1022
溶解度 (25°C) * In vitro DMSO 131 mg/mL (200.54 mM)
Water <1 mg/mL
Ethanol <1 mg/mL
In vivo 1% DMSO+30% polyethylene glycol+1% Tween 80 30 mg/mL
* <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.
化学名 Geldanamycin, 17-demethoxy-17-[[2-(dimethylamino)ethyl]amino]-, monohydrochloride

文献中の引用 (12)

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