MEK inhibitor-1

GDC-0623 (RG 7421) is a potent, ATP-uncompetitive MEK1 inhibitor with a Ki of 0.13 nM, currently in Phase 1.

MEK-IN-1 is a MEK inhibitor that serves as a chemical compound used in biological research to inhibit the activity of MEK enzymes.

MEK RAF-IN-1 (Compound 16b) serves as an inhibitor targeting both MEK and RAF, demonstrating potent efficacy with IC 50 values reported at 28 nM for MEK1, and 3 nM for both BRAF and BRAFV600E. This compound exhibits significant antitumor capabilities, effectively curbing cell proliferation in vitro in MIA PaCa-2 (G12C KRAS), HCT116 (G13D KRAS), and C26 (G12D KRAS) cells. Furthermore, MEK RAF-IN-1 significantly restricts tumor growth in xenograft mouse models employed in the study of colorectal cancer.

XSJ-10 is an HDAC inhibitor containing a RAS/RAF protein interference unit, with IC50 values of 0.05 μM in PANC-1 cells and 0.04 μM in HT-29 cells. It effectively induces cancer cell apoptosis and tumor inhibition by strongly suppressing the RAS-RAF-MEK-ERK signaling pathway and HDAC3 acetylation levels.

U0126, an effective and selective non-competitive inhibitor of MAP kinase, inhibits MEK-1 and MEK-2 with IC50 values of 0.07 and 0.06 μM respectively. U0126 inhibits autophagy and mitophagy.

PD184161 is a novel, orally-active MEK inhibitor. PD184161 inhibited MEK activity (IC50 = 10-100 nM) in a time- and concentration-dependent manner[1].

Pelitinib (EKB-569) (EKB-569) is an effective irreversible EGFR inhibitor (IC50: 38.5 nM).

Inactive analog of U0126(MEK-1/2 inhibitor), used as a negative control

BMS-599626 (AC480) has been used in trials studying the treatment of Cancer, Metastases, and HER2 or EGFR Expressing Advanced Solid Malignancies.

SL327 is a selective inhibitor for MEK1/2 with IC50 of 0.18 μM/0.22 μM; able to transport through the blood-brain barrier.

Hederacolchiside A1 (Raddeanoside R13) shows anti-leishmanial activity, it exhibits a strong antiproliferative activity on all stages of development of the parasite by altering membrane integrity and potential. Hederacolchiside A1 shows antiproliferation activities in three cancer cell lines with the IC50 value of 2.4 uM, it exhibits a preferential cytotoxicity on a pigmented melanoma cell line. It suppresses proliferation of tumor cells by inducing apoptosis through modulating PI3K/Akt/mTOR signaling pathway.

Tpl2 kinase inhibitor is an inhibitor of tumor progression locus 2 (Tpl2; IC50= 0.05 μM).1It is selective for Tpl2 over MEK, p38 MAPK, Src, MK2, and PKC (IC50s = >40, 180, >400, 110, and >400 μM, respectively). Tpl2 kinase inhibitor inhibits LPS-induced TNF-α production in isolated human monocytes and whole blood (IC50s = 0.7 and 8.5 μM, respectively). It enhances differentiation induced by calcitriol in HL-60 and U937 leukemia cells when used at a concentration of 5 μM.2Tpl2 kinase inhibitor (5 μM) inhibits the proliferation of KG-1a leukemia cells.3 1.Garvin, L.K., Green, N., Hu, Y., et al.Inhibition of Tpl2 kinase and TNF-α production with 1,7-naphthyridine-3-carbonitriles: Synthesis and structure-activity relationshipsBioor. Med. Chem. Lett.15(23)5288-5292(2005) 2.Wang, X., and Studzinski, G.P.Expression of MAP3 kinase COT1 is up-regulated by 1,25-dihydroxyvitamin D3 in parallel with activated c-jun during differentiation of human myeloid leukemia cellsJ. Steroid. Biochem. Mol. Biol.121(1-2)395-398(2010) 3.Wang, X., Gocek, E., Novik, V., et al.Inhibition of Cot1/Tlp2 oncogene in AML cells reduces ERK5 activation and up-regulates p27Kip1 concomitant with enhancement of differentiation and cell cycle arrest induced by silibinin and 1,25-dihydroxyvitamin D3Cell Cycle9(22)4542-4551(2010)

MEK4 inhibitor-1 is a newly developed compound specifically designed to inhibit the activity of MEK4, a key enzyme involved in pancreatic adenocarcinoma, with an IC 50 value of 61 nM.

AZD8330 (ARRY-704) is a novel, selective, non-ATP competitive MEK 1/2 inhibitor with IC50 of 7 nM. Phase 1.

iMDK quarterhydrate, a potent PI3K inhibitor, is effective in inhibiting the growth factor MDK (also known as midkine or MK) while demonstrating suppression of non-small cell lung cancer (NSCLC). In combination with a MEK inhibitor, iMDK quarterhydrate demonstrates cooperative inhibition of NSCLC without causing harm to normal cells and mice [1].

Hymenialdisine Analogue #1 is the indole derivative of Hymenialdisine, a potent inhibitor of a variety of kinases including MEK-1, GSK-3Β, and CKI. It also exhibits inhibition of the G2 cell cycle checkpoint at the micromolar concentrations.

RO5126766 (CH5126766) is a dual RAF/MEK inhibitor with IC50 of 8.2 nM, 19 nM, 56 nM, and 160 nM for BRAF V600E, BRAF, CRAF, and MEK1, respectively. Phase 1.

(2Z,3Z)-U0126 is a highly selective inhibitor of both MEK1 and MEK2, a type of MAPK ERK kinase. It was found to functionally antagonize AP-1 transcriptional activity via noncompetitive inhibition of the dual specificity kinase MEK with IC50 of 72 nM for MEK1 and 58 nM for MEK2. U0126 inhibited anchorage-independent growth of Ki-ras-transformed rat fibroblasts by simultaneously blocking both extracellular signal-regulated kinase and mammalian target of rapamycin pathways.

GSK1790627, the N-deacetylated metabolite of Trametinib, represents an orally active MEK inhibitor that promotes autophagy and triggers apoptosis [1].

MEK/PI3K-IN-1 (compound 6r) is a potent dual inhibitor of MEK and PI3K, exhibiting IC50 values of 124 nM for MEK1, 130 nM for PI3Kα, and 236 nM for PI3Kδ. It effectively reduces pAKT and pERK1/2 levels, demonstrating anti-proliferative effects on various tumor cell lines [1].

MEK/PI3K-IN-2 (compound 6s), a potent inhibitor of both MEK and PI3K, demonstrates IC50 values of 352 nM (MEK1), 107 nM (PI3Kα), and 137 nM (PI3Kδ), effectively reducing pAKT and pERK1/2 levels and exhibiting anti-proliferative activity against various tumor cell lines [1].

Vem-L-Cy5 (compound 3), a Vemurafenib-based BRAF inhibitor conjugated with the near-infrared (NIR) fluorophore cyanine-5 (Cy5), selectively targets the BRAF V600E mutation and inhibits MEK phosphorylation. This compound demonstrates cell permeability and has been shown to inhibit the growth of various cancer cell types [1].

MEK-IN-6 (Example 69), a potent MEK inhibitor, effectively inhibits ERK1/2 (Thr202/Tyr204) phosphorylation in A375 cells, with an IC50 of 2 nM, making it valuable for cancer research [1].

MEK-IN-6 hydrate (compound 69), a MEK inhibitor, exhibits an IC50 value of 2 nM in A375 cells [1].