MK-1775 化学構造
分子量: 500.6



Quality Control & MSDS


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  • 研究分野
  • Combination Therapy



情報 MK-1775は、有力で選択的なWee1</b> 阻害剤で、IC50 が 5.2 nMです。



5.2 nM [1]

In vitro試験 MK-1775 inhibits Wee1 kinase in an ATP-competitive manner. Compared to Wee1, MK-1775 displays 2- to 3-fold less potency against Yes with IC50 of 14 nM, 10-fold less potency against seven other kinases with >80% inhibition at 1 μM, and >100-fold selectivity over human Myt 1, another kinase that inhibits cyclin-dependent kinase 1 (CDC2) by phosphorylation at an alternative site (Thr14). By abrogating the DNA damage checkpoint via blockade of Wee1 activity in WiDr cells bearing mutated p53, MK-1775 treatment inhibits the basal phosphorylation of CDC2 at Tyr15 (CDC2Y15) with EC50 of 49 nM, and suppresses gemcitabine-, carboplatin- or cisplatin-induced phosphorylation of CDC2 and cell cycle arrest in a dose-dependent manner, with EC50 of 82 nM and 81 nM, 180 nM and 163 nM, as well as 159 nM and 160 nM, respectively. MK-1775 treatment alone at 30-100 nM has no significant antiproliferative effect in WiDr and H1299 cells, whereas MK-1775 at 300 nM, sufficient to inhibit Wee1 by >80%, displays moderate but significant antiproliferative effects by 34.1% in WiDr cells and 28.4% in H1299 cells. [1]
In vivo試験 MK-1775 treatment alone at ~20 mg/kg displays minimal antitumor effects against WiDr xenografts in rats with T/C of 69% at day 3. Antitumor efficacy by MK-1775 alone in the nude rat HeLa-luc and TOV21G-shp53 xenograft models models is also moderate. [1]
臨床試験 A Phase I dose escalation study evaluating MK-1775 in both monotherapy and in combination with Gemcitabine, Cisplatin, or Carboplatin in adult subjects with advanced solid tumors is currently ongoing.
特集 The first reported Wee1 inhibitor.

推薦された実験操作 (公開の文献だけ)



In vitro kinase assays Recombinant human Wee1 is used. Kinase reaction is conducted with 10 μM ATP, 1.0 μCi of [γ-33P]ATP, and 2.5 μg of poly(Lys, Tyr) as a substrate in the presence of increasing concentrations of MK-1775 at 30°C for 30 minutes. Radioactivity incorporated into the substrate is trapped on MultiScreen-PH plates and is counted on a liquid scintillation counter.



細胞系 WiDr, NCI-H1299, TOV21G, and HeLa
濃度 Dissolved in DMSO, final concentrations ~10 μM
処理時間 24 hours

Cells are treated with or without gemcitabine for 24 hours, then with MK-1775 for an additional 24 hours. Cell viability is determined with a WST-8 kit using SpectraMax. Cellular caspase-3/7 activities are determined with a Caspase-3/7 Glo kit.



動物モデル Immunodeficient nude rats (F344/NJcl-rnu) bearing WiDr, HeLa-luc, or TOV21G-shp53 tumors
製剤 Prepared in a vehicle of 0.5% methylcellulose solution
投薬量 ~20 mg/kg/day
管理 Orally
Solubility 0.5% methylcellulose 30 mg/mL
* 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.

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

SpeciesBaboonDogMonkeyRabbitGuinea pigRatHamsterMouse
Weight (kg)121031.
Body Surface Area (m2)
Km factor202012128653
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)



Download MK-1775 SDF
分子量 500.6


CAS No. 955365-80-7
保管 2年-20℃
6月-80℃in DMSO
溶解度 (25°C) * In vitro DMSO 80 mg/mL (159 mM)
0.0001 mg/mL (<1 mM)
エタノール <1 mg/mL (<1 mM)
In vivo 0.5% methylcellulose 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 2-allyl-1-(6-(2-hydroxypropan-2-yl)pyridin-2-yl)-6-(4-(4-methylpiperazin-1-yl)phenylamino)-1,2-dihydropyrazolo[3,4-d]pyrimidin-3-one


カスタマーレビュー (1)

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Source Mol Cancer Ther, 2012, MK-1775 purchased from Selleck
Method Fow cytometry/Western blotting
Cell Lines U2OS cells
Concentrations 300/1000 nM
Incubation Time 1 h
Results Inhibition of WEE1 kinase by MK-1775 led to increased uptake of the nucleoside analog EdU during the 30 to 90 min after MK-1775 addition (Fig. A). MK-1775 also led to decreased tyrosine 15 inhibitory phosphorylation on CDK1 and increased phosphorylation of CDK substrates. We found that inhibition of WEE1 markedly reduced the replication fork rates (Fig. C). depletion of CDT1 could normalize fork speed in response to WEE1 inhibition by MK-1775.

製品表彰状 (6)



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