Chk1 and MK2 Inhibitors set
mRNA synthesis
In vitro transcription of capped mRNA with modified nucleotides and Poly(A) tail
Tyramide Signal Amplification (TSA)
TSA (Tyramide Signal Amplification), used for signal amplification of ISH, IHC and IC etc.
Phos Binding Reagent Acrylamide
Separation of phosphorylated and non-phosphorylated proteins without phospho-specific antibody
Cell Counting Kit-8 (CCK-8)
A convenient and sensitive way for cell proliferation assay and cytotoxicity assay
SYBR Safe DNA Gel Stain
Safe and sensitive stain for visualization of DNA or RNA in agarose or acrylamide gels.
Inhibitor Cocktails
Protect the integrity of proteins from multiple proteases and phosphatases for different applications.
PF477736和PF3644022分别是有效的选择性Chk1和MK2抑制剂。PF477736和PF3644022对Chk1和MK2的同时抑制被认为是治疗KRAS或BRAF引发的癌症的可能治疗措施。[1]
Chk1和MK2都是G2/M检验点的关键元件,是避免遭受遗传毒性损害的细胞进入有丝分裂所必需的[2]。Chk1和Chk2是上游激酶ATR和ATM的常规DNA损伤响应(DDR)网络的重要效应激酶[3](Jackson and Bartek, 2009)。p38/MK2途径是广泛分布的压力激酶途径,与Chk1共同作用。Chk1和MK2分别控制检验点的起始和维持[4]。这两个酶的活性涵盖对CDC25家族成员的磷酸化抑制,到后续的通过阻断CDC25B依赖的CDK激活,从而引起细胞周期停滞[2]。
KRAS是人类癌症中最频繁突变的原癌基因之一。原癌基因KRAS的急性表达可引起遗传毒性损伤。原癌基因KRAS突变与Chk1/MK2介导的检验点成瘾有关。[1]
在96个细胞系的33个中,PF477736和PF3644022对细胞周期检验点有强烈的协同效应,尤其是在KRAS和BRAF驱动的细胞中。KRAS突变的癌症表现出内在的基因毒性应激,导致额外的Chk1和MK2活性。在KRAS 突变细胞中,使用PF477736和PF3644022一同处理可导致有丝分裂障碍。[1]
在异种移植小鼠模型中,包括不同的Kras或Braf驱动的原位小鼠癌症模型,这种可操作的协同相互作用被验证。在直接从病人中分离的KRAS或BRAF突变肿瘤细胞中,联合的检验点抑制可引起凋亡性细胞死亡。[1]
参考文献:
1. Dietlein F, Kalb B2, Jokic M et al.A Synergistic Interaction between Chk1- and MK2 Inhibitors in KRAS-Mutant Cancer.Cell. 2015 Jul 2;162(1):146-59.
2. Reinhardt, H.C., and Yaffe, M.B. (2013). Phospho-Ser/Thr-binding domains: navigating the cell cycle and DNA damage response. Nat. Rev. Mol. Cell Biol. 14, 563–580.
3. Jackson, S.P., and Bartek, J. The DNA-damage response in humanbiology and disease. Nature. 2009. 461, 1071–1078.
4. Reinhardt, H.C., Hasskamp, P., Schmedding, I., et al. DNA damage activates a spatially distinct late cytoplasmic cell-cycle checkpoint network controlled by MK2-mediated RNA stabilization. 2010. Mol. Cell 40, 34–49.
Long Term Storage: | -20°C | |||||||||||||||
Kit/Set Contains: | Contains the following inhibitors:
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