2. Signaling Pathways
  3. Cell Cycle/DNA Damage
  4. Checkpoint Kinase (Chk)

Checkpoint Kinase (Chk) (细胞周期检查点激酶)

DNA damage checkpoint and the spindle checkpoint are two cell cycle surveillance systems, which guard against genomic instability. The DNA damage checkpoint kinases CHK1 and CHK2 are central to the induction of cell cycle arrest, DNA repair, and apoptosis as elements in the DNA-damage checkpoint. The components of the spindle checkpoint include Mad1, Mad2, Mad3(BubR1), Bub3 and the kinases Bub1, Mph1(Mps1) and Aurora B.

Cells that suffer DNA damage activate the checkpoint kinases CHK1 and CHK2, which signal to initiate repair processes, limit cell-cycle progression and prevent cell replication, until the damaged DNA is repaired.

The spindle checkpoint causes metaphase arrest when kinetochore-microtubules are unattached during mitosis. The SAC consists of ‘sensor’ proteins, such as Mad1, Bub1 and Mps1; a ‘signal transducer’, consisting of the mitotic checkpoint complex, composed of Mad2, Bub3, BubR1 and Cdc20; and an ‘effector’ known as the anaphase promoting complex/cyclosome (APC/C).

Checkpoint Kinase (Chk) 亚型特异性产品:

Checkpoint Kinase (Chk) Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-110331
    CCT241533 dihydrochloride Inhibitor
    CCT241533 dihydrochloride 是有效，选择性的 CHK2 抑制剂，IC50 和 Ki 分别为 3 nM 和 1.16 nM。
    CCT241533 dihydrochloride
  • HY-156470
    Multi-kinase-IN-6 Inhibitor
    Multi-kinase-IN-6 (compound 10e) 是一种多激酶抑制剂，对 TrkA、ALK2、c-KIT、EGFR、PIM1、CK2α、CHK1 和 CDK2 显示出良好的酶抑制活性。Multi-kinase-IN-6 显示出针对 MCF7、HCT116 和 EKVX 的抗增殖活性，IC50 值分别为 3.36 μM、1.40 μM 和 3.49 μM。Multi-kinase-IN-6 在 MCF7 和 HCT116 细胞中显示细胞周期阻滞在 G1/S 期和 G1 期，具有良好的凋亡 (apoptosis) 效果。
    Multi-kinase-IN-6
  • HY-158303
    Chk2-IN-2 Inhibitor
    Chk2-IN-2 (compound 2) 是 CHK2 的选择性抑制剂，具有潜在的抗癌活性。
    Chk2-IN-2
  • HY-106009
    VRX0466617 Inhibitor
    VRX0466617 是一种选择性的 Chk2 抑制剂，可有效抑制 Chk2 Ser 19 和 Ser33-35 的磷酸化。VRX0466617 具有研究癌症的潜力。
    VRX0466617
  • HY-125203
    PV-1019 Inhibitor
    PV-1019 (NSC 744039) 是一种有效的选择性 Chk2 抑制剂，IC50 值为 24 nM。PV-1019 抑制 Topotecan (HY-13768) 诱导的 Chk2 自磷酸化。PV-1019 抑制 IR 诱导的细胞凋亡。
    PV-1019
  • HY-112477
    Chk2-IN-1 Inhibitor
    Chk2-IN-1 (compound 1) 是一种有效和选择性的 checkpoint kinase 2 (Chk2) 抑制剂，抑制 Chk2 和 Chk1 的 IC50 值分别为 13.5 nM 和 220.4 nM。Chk2-IN-1 可引发强烈的共济失调毛细血管扩张突变 (ATM) 依赖性 Chk2 介导的辐射防护作用。
    Chk2-IN-1
  • HY-119699
    PV1115 Inhibitor
    PV1115 is a potent and highly selective Chk2 inhibitor with an IC50 of 0.14 nM, 66000 nM, >100000 nM for Chk2, Chk1 and RSK2, respectively. PV1115 is situated within the ATP-binding pocket of Chk2.
    PV1115
  • HY-103366
    NSC 109555 ditosylate Inhibitor
    NSC 109555 ditosylate 是一种高效的、选择性的、ATP 竞争性检查点激酶 2 (Chk2) 抑制剂，其 IC＜sub＞50＜/sub＞ 为 240 nM。NSC 109555 ditosylate 可用于癌症的研究。
    NSC 109555 ditosylate
  • HY-111369
    CHK1-IN-2 Inhibitor
    CHK1-IN-2 是细胞周期检测点激酶 (CHK1) 的抑制剂，其 IC50 为 6 nM。
    CHK1-IN-2
  • HY-10992A
    AZD-7762 hydrochloride Inhibitor
    AZD-7762 hydrochloride 是一种有效的 ATP 竞争性的细胞周期检测点激酶 (checkpoint kinase，Chk) 抑制剂，抑制 Chk1 的 IC50 为 5 nM。
    AZD-7762 hydrochloride
  • HY-U00345
    CHK-IN-1 Inhibitor
    CHK-IN-1 是一种 CHK1 和 CHK2 的抑制剂，具有抗增殖作用。
    CHK-IN-1
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Checkpoint Kinase (Chk) Isoform Comparison

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