ATM/ATR are members of the PI3 family of serine-threonine kinases and function as essential links between the sensors and effectors of the DNA damage response. The roles of ATM and ATR partially overlap and are cooperative; however they are also known to play distinct roles in protecting the cell from DNA damage.
ATM is mostly responsible for sending signals from DSBs (double-strand breaks) induced by ionizing radiation while the closely related ATR responds to UV damage or stalled replication forks. ATM and ATR are known to phosphorylate common as well as specific substrates to activate checkpoint signaling. The G1, S, and G2 cell cycle checkpoints are primarily regulated by the ATM (ataxia telangiectasia, mutated) and ATR (ATM and Rad3-related) protein kinases.
Cat. No. | Product Name | CAS No. | Information |
---|---|---|---|
H9473 |
Gartisertib |
1613191-99-3 | Gartisertib(VX-803) is an orally available inhibitor of ataxia telangiectasia and Rad3 related (ATR) kinase, with potential antineoplastic activity. |
H1848 |
VE-821 |
1232410-49-9 |
A potent, selective and ATP-competitive inhibitor of ATR with Ki/IC50 of 13 nM/26 nM; shows excellent selectivity for ATR over the related PIKKs ATM, DNA-PK, mTOR and PI3K. |
H1847 |
KU-60019 |
925701-46-8 | KU-60019 is an improved analogue of KU-55933, and is a potent, specific inhibitor of ATM kinase with IC50 of 6.3 nM, 270- and 1,600-fold selectivity over DNA-PKcs and ATR; blocks radiation-induced phosphorylation of key ATM targets in human glioma cells, which is 10-fold more effective than KU-55933, reduces basal S473 AKT phosphorylation and inhibits glioma cell migration and invasion in vitro; preferentially sensitizes p53-mutant glioma to ionizing radiation in orthotopic xenograft models of GBM. |
H1846 |
KU-55933 |
587871-26-9 | KU-55933 is a potent, specific, ATP-competitive inhibitor of ATM with Ki/IC50 of 2.2/13 nM, >100-fold selectivity against other members of the PIKK family kinases; inhibits ATM-dependent p53 Ser15 phosphorylation in U2OS osteosarcoma cells with IC50 of 0.3 uM, sensitizes the cytotoxic effects of ionizing radiation and to the DNA double-strand break-inducing chemotherapeutic agents, etoposide, doxorubicin, and camptothecin; also suppresses the replication of both wild-type and drug-resistant HIV-1 by sensitizing cells to retrovirus-induced cell death. |
H1845 |
GSK 635416A |
944729-29-7 | GSK 635416A is a novel ATM inhibitor with highly selective radiosensitizing activity, inhibits radiation induced phosphorylation of ATM; exhibits virtually no cytotoxicity in the absence of radiation and in normal fibroblast cells, enhances IR effect in radiosensitizing HNSCC cell lines but not in normal fibroblast BJ-ET cells in combined with olaparib. |
H1844 |
GJ103 sodium salt |
1459687-96-7 |
A novel small molecular read-through (SMRT) compound that can induce read through of nonsense mutations in the ATM gene; induces ATM kinase on both TGA and TAG stop codons and restores ATMpSer1981 autophosphorylation and SMC1pSer966 transphosphorylation in A-T cells. |
H1843 |
CP-466722 |
1080622-86-1 |
A poten and selective ATM inhibitor without effect on ATR kinase; does not inhibit PI3K, PI3K-like protein kinases or Abl kinase and disrupts ATM-dependent cell cycle checkpoints in cells. |
H1842 |
CBP-93872 |
67427-51-4 | A potent G2 checkpoint inhibitor that specifically abrogates the DNA double-stranded break (DSB)-induced G2 checkpoint; directly suppresses the growth of p53-mutated cancer cell lines with wild-type CDKN2A by eliciting G(1) arrest, but not CDKN2A-deleted and/or wild-type p53 lines; decreases phospho-cdc2 Y15 by inhibiting phosphorylation of Chk1; specifically inhibits DSB-mediated and Nbs1-dependent activation of ATR. |
H1841 |
BAY-1895344 hydrochloride |
Elimusertib(BAY-1895344 ) is a potent, selective, orally active ATR inhibitor with low-nanomolar potency; potently inhibits the proliferation of a broad spectrum of human tumor cell lines with mean IC50 of 78 nM; inhibits hydroxyurea-induced H2AX phosphorylation, exhibits strong in vivo anti-tumor efficacy in monotherapy in a variety of xenograft models. |
|
H1840 |
BAY-1895344 |
1876467-74-1 |
BAY-1895344(Elimusertib) is a potent, selective, orally active ATR inhibitor with low-nanomolar potency; potently inhibits the proliferation of a broad spectrum of human tumor cell lines with mean IC50 of 78 nM; inhibits hydroxyurea-induced H2AX phosphorylation, exhibits strong in vivo anti-tumor efficacy in monotherapy in a variety of xenograft models. |
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