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  2. Cell Cycle/DNA Damage Apoptosis
  3. CDK Apoptosis
  4. LY2857785

LY2857785 是一種I型可逆的 ATP 競爭性的 CDK9，CDK8 和 CDK7 抑制劑，IC50 分別為 11 nM，16 nM 和 246 nM。

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LY2857785 Chemical Structure

LY2857785 Chemical Structure

CAS No. : 1619903-54-6

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規(guī)格 價格 是否有貨 數量
10 mM * 1 mL in DMSO ￥1776
In-stock
1 mg ￥774
In-stock
2 mg ￥1100
In-stock
5 mg ￥1800
In-stock
10 mg ￥2800
In-stock
25 mg ￥4620
In-stock
50 mg 現貨 詢價
100 mg 現貨 詢價
200 mg   詢價  
500 mg   詢價  

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Customer Review

  • 生物活性

  • 實驗參考方法

  • 純度 & 產品資料

  • 參考文獻

生物活性

LY2857785 is a type I reversible and competitive ATP kinase inhibitor against CDK9 (IC50 11 nM) and other transcription kinases CDK8 (IC50 16 nM), and CDK7 (IC50 246 nM).

IC50 & Target[1]

CDK9

0.011 μM (IC50)

CDK8

0.016 μM (IC50)

CDK7

0.246 μM (IC50)

體外研究
(In Vitro)

LY2857785 shows good selectivity against a panel of 114 protein kinases, with only 5 other protein kinases inhibited with potency (IC50) less than 0.1 μM, and a total of 14 kinases less than 1 μM. At the cellular level, LY2857785 inhibits CTD P-Ser2 and CTD P-Ser5 in U2OS cells at IC50s 0.089 (n=13) and 0.042 (n=1) μM, respectively. However, LY2857785 only induces a moderate G2-M DNA content increase, from 35% to 55%, with EC50 0.135 μM. LY2857785 shows potent compound exposure- and time-dependent cell proliferation inhibition in MV-4-11, RPMI8226, and L363 cells. When incubated between 4 to 24 hours, the cell growth inhibition potency reaches a maximal effect at 8 hours with IC50s 0.04, 0.2, and 0.5 μM for MV-4-11, RPMI8226, and L363 cells, respectively. LY2857785-induced cancer cell apoptosis is also time dependent, reaching maximal potency at 8 hours with IC50 0.5 μM in L363 cells[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
體內研究
(In Vivo)

In HCT116 xenograft tumor-bearing mice, LY2857785 demonstrates dose-dependent RNAP II CTD P-Ser2 inhibition potently with TED50 of 4.4 mg/kg and TEC50 of 0.36 μM. LY2857785 also shows significant duration of CTD P-Ser2 inhibition for 3 to 6 hours at TED70 (8 mg/kg) in HCT116 and MV-4-11 nude mice xenograft models. In the nude rat MV-4-11 xenograft model, LY2857785 similarly shows dose-dependent CTD P-Ser2 inhibition for 8 hours at TED70 (7 mg/kg) and TED90 (10 mg/kg). LY2857785 demonstrates the most dramatic tumor regression in the AML MV-4-11 xenograft tumor model either by i.v. bolus in mice or i.v. infusion in rats[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
分子量

448.60

Formula

C26H36N6O
CAS 號
性狀

固體

顏色

White to off-white

運輸條件

Room temperature in continental US; may vary elsewhere.
儲存方式
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
溶解性數據
細胞實驗： 

DMSO 中的溶解度 : 10 mg/mL (22.29 mM; 超聲助溶 (<80°C); 吸濕的 DMSO 對產品的溶解度有顯著影響，請使用新開封的 DMSO)

配制儲備液
濃度 溶劑體積 質量 1 mg 5 mg 10 mg
1 mM 2.2292 mL 11.1458 mL 22.2916 mL
5 mM 0.4458 mL 2.2292 mL 4.4583 mL
查看完整儲備液配制表

* 請根據產品在不同溶劑中的溶解度選擇合適的溶劑配制儲備液；一旦配成溶液，請分裝保存，避免反復凍融造成的產品失效。
儲備液的保存方式和期限：-80°C, 2 years; -20°C, 1 year。-80°C儲存時，請在2年內使用， -20°C儲存時，請在1年內使用。

  • 摩爾計算器

  • 稀釋計算器

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

質量
=
濃度
×
體積
×
分子量 *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

濃度 (start)

C1

×
體積 (start)

V1

=
濃度 (final)

C2

×
體積 (final)

V2

動物實驗：

請根據您的 實驗動物和給藥方式 選擇適當的溶解方案。

以下溶解方案都請先按照 In Vitro 方式配制澄清的儲備液，再依次添加助溶劑：
——為保證實驗結果的可靠性，澄清的儲備液可以根據儲存條件，適當保存；體內實驗的工作液，建議您現用現配，當天使用；
以下溶劑前顯示的百分比是指該溶劑在您配制終溶液中的體積占比；如在配制過程中出現沉淀、析出現象，可以通過加熱和/或超聲的方式助溶

  • 方案 一

    請依序添加每種溶劑： 10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 1 mg/mL (2.23 mM); 澄清溶液

    此方案可獲得 ≥ 1 mg/mL（飽和度未知）的澄清溶液。

    以 1 mL 工作液為例，取 100 μL 10.0 mg/mL 的澄清 DMSO 儲備液加到 400 μL PEG300 中，混合均勻；再向上述體系中加入 50 μL Tween-80，混合均勻；然后再繼續(xù)加入 450 μL 生理鹽水 定容至 1 mL。

    生理鹽水的配制：將 0.9 g 氯化鈉，溶解于 ddH?O 并定容至 100 mL，可以得到澄清透明的生理鹽水溶液。
  • 方案 二

    請依序添加每種溶劑： 10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 1 mg/mL (2.23 mM); 澄清溶液

    此方案可獲得 ≥ 1 mg/mL（飽和度未知）的澄清溶液。

    以 1 mL 工作液為例，取 100 μL 10.0 mg/mL 的澄清 DMSO 儲備液加到 900 μL 20% 的 SBE-β-CD 生理鹽水水溶液 中，混合均勻。

    2 g SBE-β-CD（磺丁基醚 β-環(huán)糊精）粉末定容于 10 mL 的生理鹽水中，完全溶解至澄清透明。
動物溶解方案計算器
請輸入動物實驗的基本信息：

給藥劑量

mg/kg

動物的平均體重

g

每只動物的給藥體積

μL

動物數量

只
由于實驗過程有損耗，建議您多配一只動物的量
請輸入您的動物體內配方組成：
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
如果您的動物是免疫缺陷鼠或者體弱鼠，建議 DMSO 中的在最后工作液體系中的占比盡量不超過 2%。
方案所需 助溶劑 包括：DMSO， ，均可在 MCE 網站選購。 ，Tween 80，均可在 MCE 網站選購。
計算結果
工作液所需濃度 : mg/mL
儲備液配制方法 : mg 藥物溶于 μL  DMSO（母液濃度為 mg/mL）。
您所需的儲備液濃度超過該產品的實測溶解度，以下方案僅供參考，如有需要，請與 MCE 中國技術支持聯(lián)系。
動物實驗體內工作液的配制方法 : 取 μL DMSO 儲備液，加入 μL 。 μL ，混合均勻至澄清，再加 μL Tween 80，混合均勻至澄清，再加 μL 生理鹽水。
連續(xù)給藥周期超過半月以上，請謹慎選擇該方案。
請確保第一步儲備液溶解至澄清狀態(tài)，從左到右依次添加助溶劑。您可采用超聲加熱 （超聲清洗儀，建議頻次 20-40 kHz），渦旋吹打等方式輔助溶解。
純度 & 產品資料

純度: 99.92%

參考文獻
Kinase Assay
[1]

CDK7 and CDK9 reaction mixtures contain 10 mM Tris-HCl (pH 7.4), 10 mM HEPES, 5 mM DTT, 10 μM ATP, 0.5 μCi 33p-ATP, 10 mM MnCl2, 150 mM NaCl, 0.01% Triton X-100, 2% DMSO, 0.05 mM CDK7/9ptide, and 2 nM CDK7/Mat1/cyclin H, or 2 nM CDK9/cyclin T1, respectively. CDK8/cyclin C reaction is performed in HEPES 30 mM, DTT 2 mM, MgCl2 5 mM, 0.015% Triton X-100, 5 μM ATP, and 400 nM of RBER-CHKStide containing 20 nM of enzyme. LY2857785 in DMSO is diluted serially 1:3 for dose response. Reactions are carried out in 96-well polystyrene plates. The reactions are incubated at room temperature for 60 minutes and followed by termination with 10% H3PO4 or 10% trichloroacetic acid (TCA). For the filter binding assay, reactions are transferred to 96-well filter plates and measured by Microbeta scintillation counter. For ADP Transcreener Fluorescent Polarization Assays, reactions are quenched with ADP detection mix, incubated 2 hours at room temperature and then FP is measured at λex=610 nm, λem=670 nm on a Tecan Ultra 384 plate reader. The concentration of ADP product is calculated from millipolarization (μP) using a prepared ADP/ATP dilution series as a standard curve. Kinase profiling are carried out in 96-well polystyrene plates. Briefly, in a final volume of 25 μL the enzyme is incubated with the appropriate buffer, peptide substrate, and the diluted LY2857785. Reactions are initiated by the addition of ATP/[33P] and the ATP mix is incubated at room temperature for 40 minutes. Reactions are quenched with the addition 5 μL of 3% phosphoric acid, 10 μL of the reaction are spotted onto a filtermat, washed 3 times for 5 minutes in 75 mM phosphoric acid and once in methanol. Once the filters are dry, they are submitted to scintillation counting[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
Cell Assay
[1]

Solid tumor cells are plated in poly-D-lysine coated and hematologic cell lines are seeded in noncoated 96-well plates overnight before being treated with compounds (e.g, LY2857785). Solid tumor cells are fixed with Prefer for 20 minutes at room temperature and permeated with 0.1% Triton X-100 in PBS for 15 minutes. Caspase-3 expression is measured by immunofluorescence with antiactivated caspase-3. Terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) activity is measured with In Situ Cell Death Detection Kit. Both assays are analyzed on Acumen Explorer laser-scanning fluorescence microplate cytometer. Hematologic tumor cells are assayed for cell viability with CellTiter-Glo Luminescent Cell Viability Assay[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
Animal Administration
[1]

Mice and Rats[1]
For xenograft models, human cancer cells U87MG, MV-4-11, A375, and HCT116 are implanted into female nude rats or athymic nude female mice. The animals are dosed with saline, Rapamycin, or LY2857785, respectively. MV-4-11 xenografts in nude mice are treated by LY2857785 (4, 8, and 18 mg/kg) i.v. bolus. MV-4-11 xenografts in nude rats are treated with LY2857785 (3, 6, and 9 mg/kg) 4-hour i.v. infusion. An untreated vehicle control group is administered saline i.v. every 3 days. Flow cytometry analysis is conducted using Beckman Coulter's CXP software. Statistical significance of the effect of LY2857785 and/or control compounds is assessed by Dunnett method, one-way ANOVA.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
參考文獻

完整儲備液配制表

* 請根據產品在不同溶劑中的溶解度選擇合適的溶劑配制儲備液；一旦配成溶液，請分裝保存，避免反復凍融造成的產品失效。
儲備液的保存方式和期限：-80°C, 2 years; -20°C, 1 year。-80°C儲存時，請在2年內使用， -20°C儲存時，請在1年內使用。

可選溶劑 濃度 溶劑體積 質量 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.2292 mL 11.1458 mL 22.2916 mL 55.7289 mL
5 mM 0.4458 mL 2.2292 mL 4.4583 mL 11.1458 mL
10 mM 0.2229 mL 1.1146 mL 2.2292 mL 5.5729 mL
15 mM 0.1486 mL 0.7431 mL 1.4861 mL 3.7153 mL
20 mM 0.1115 mL 0.5573 mL 1.1146 mL 2.7864 mL
Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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產品名稱：
LY2857785
目錄號：
HY-12293
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