Monopolar spindle 1 (Mps1), also known as TTK, is a serine threonine kinase, which ensures proper biorientation of sister chromatids on the mitotic spindle by the activation of the spindle assembly checkpoint (SAC). Mps1 has been shown to function as the key kinase that activates the spindle assembly checkpoint (SAC) to secure proper distribution of chromosomes to daughter cells.
Mps1 is a dual specificity protein kinase that is essential for the bipolar attachment of chromosomes to the mitotic spindle and for maintaining the spindle assembly checkpoint until all chromosomes are properly attached. Mps1 is expressed at high levels during mitosis and is abundantly expressed in cancer cells. Disruption of Mps1 function induces aneuploidy and cell death.
Cat. No. | Product Name | CAS No. | Information |
---|---|---|---|
H2141 |
NTRC 00660 |
1817791-73-3 | A highly potent, selective inhibitor of checkpoint kinase TTK/Mps1 with IC50 of 0.6 nM; displays >200-fold selectivity over 276 kinases, including Aurora C, PLK1, PLK4; shows very potent anti-proliferative activity on a broad panel of human cancer cell lines (IC50=18- 897 nM); increases the survival in a murine breast cancer model that mimics human TNBC and delays tumor relapse, combined with docetaxel. |
H2140 |
NMS-P715 |
1202055-32-0 | NMS-P715 is a potent, selective, orally bioavailable Mps1 inhibitor with IC50 of 8 nM, Ki of 0.99 nM; displays excellent selectivity in vitro against a panel of 60 kinases at 5 uM; selectively reduces cancer cell proliferation, leaving normal cells almost unaffected, promotes massive spindle assembly checkpoint (SAC) in U2OS cells with EC50 of 68 nM; causes a reduction in G1 phase and a flattening in G2/M phase of the cell cycle accompanied by histone H3 dephosphorylation, PARP cleavage, and histone H2AX phosphorylation; inhibits tumor growth in preclinical cancer models. |
H2139 |
Mps1-IN-3 |
1609584-72-6 | Mps1-IN-3 is a selective and highly potent Mps1 kinase inhibitor with IC50 of 50 nM; causes mitotic aberrancies in glioblastoma cells and, in combination with vincristine, induces mitotic checkpoint override, increases aneuploidy and augmentes cell death; sensitizes glioblastoma cells to vincristine in orthotopic mouse models, resulting in prolonged survival without toxicity. |
H2137 |
Mps1 inhibitor 2 |
1228817-38-6 |
Mps1 inhibitor 2 is a potent, selective Mps1 kinase inhibitor with IC50 of 145 nM, demonstrates >1,000-fold selectivity over a panel of 352 kinases with the major exceptions of Gak and Plk1; leads to defects in Mad1 and Mad2 establishment at unattached kinetochores, decreases Aurora B kinase activity, premature mitotic exit and gross aneuploidy, without any evidence of centrosome duplication defects; decreases cancer cell viability. |
H2136 |
Mps1 inhibitor 1 |
1125593-20-5 |
Mps1 inhibitor 1 is a potent, selective Mps1 kinase inhibitor with IC50 of 367 nM; demonstrates >1,000-fold selectivity over a panel of 352 kinases with the major exceptions of Alk and Ltk; leads to defects in Mad1 and Mad2 establishment at unattached kinetochores, decreases Aurora B kinase activity, premature mitotic exit and gross aneuploidy, without any evidence of centrosome duplication defects; decreases cancer cell viability. |
H2135 |
MPI-0479605 |
1246529-32-7 | MPI-0479605 is a potent, selective, ATP competitive inhibitor of Mps1 with IC50 of 1.8 nM; triggers the time-dependent degradation of both cyclin B and securin, decreases BubR1 phosphorylation in nocodazole-arrested cells, blocks apparent autophosphorylation of Mps1 at threonine 676 in HEK293T cells; impairs spindle assembly checkpoint (SAC), resulting in chromosome segregation defects and aneuploidy, induces p53-p21 pathway in an ATM- and ATR-dependent manner; exhibits cytotoxicity across a broad range of tumor cell lines and antitumor activity in human tumor xenografts. |
H2134 |
Empesertib |
1443763-60-7 | Empesertib (BAY-1161909, BAY1161909) is a potent, selective Monopolar spindle 1 (Mps1/TTK) inhibitor with IC50 of 0.34 nM; inhibits only JNK2 and JNK3 more than 50% at 1 uM in Millipore panel (230 kinases); abrogates nocodazole-induced metaphase arrest in HeLa cells with IC50 of 56 nM, inhibits the proliferation of a panel tumor cell lines covering various cancer with mean IC50 of 160 nM; enhances the efficacy of antimitotic cancer drugs and shows potentially overcome resistance in vivo. |
H2133 |
CFI-402257 |
1610759-22-2 |
A potent and selective Mps1/TTK kinase inhibitor with Ki of 0.1 nM and cellular Mps1 EC50 of 6.5 nM; exhibit effects consistent with Mps1 kinase inhibition, specifically SAC inactivation, leading to chromosome missegregation, aneuploidy, and ultimately cell death; well-tolerated in mouse models of human cancer and orally active. |
H2132 |
CFI-401980 |
1610676-27-1 | CFI-401980 is a potent, selective, novel class TTK (Tyrosine Threonine Kinase) inhibitor with Ki of 0.8 nM, HCT116 GI50 of 13 nM; shows exceptional kinase selectivity; demonstrate a strong anti-proliferative activity in a panel of human cancer cell lines (HCT116 GI50 |
H2131 |
CFI-401870 |
1599460-95-3 | A potent, selective, orally active Mps1 (TTK) inhibitor with IC50 of 3.1 nM; displays low off-target activity (>500-fold) and microsomal stability; inhibits HCT116 cell growth with GI50 of |
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