NUAK2 Inhibitor

WZ4003 is the first potent and highly specific NUAK kinase inhibitor with IC₅₀ of 20 nM/100 nM for NUAK1 (ARK5)/NUAK2, without significant inhibition on other 139 kinases.

MRT199665 is a potent and ATP-competitive, selective MARK/SIK/AMPK inhibitor with IC₅₀s of 2/2/3/2 nM, 10/10 nM, and 110/12/43 nM for MARK1/MARK2/MARK3/MARK14, AMPKα1/AMPKα2, and SIK1/SIK2/SIK3, respectively. MRT199665 causes apoptosis in MEF2C-activated human acute myeloid leukemias (AML) cells. MRT199665 inhibits the phosphorylation of SIK substrate CRTC3 at S370.

HTH-02-006 is a NUAK2 inhibitor, with an IC₅₀ value of 126 nM. HTH-02-006 inhibits NUAK2-mediated signaling by reducing phosphorylation of its substrate MYPT1 at S445 and downstream MLC. HTH-02-006 shows growth inhibitory efficacy in YAP-high cancer cells (HuCCT-1, SNU475). HTH-02-006 significantly suppresses YAP-induced hepatomegaly (reduced liver/body weight ratio) in TetO-YAP S127A transgenic mice and demonstrates significant anti-tumor efficacy in mice bearing HMVP2 prostate cancer allografts. HTH-02-006 can be used for the study of liver cancer and prostate cancer.

NUAK1-IN-3 is a potent and selective NUAK1 inhibitor with an IC₅₀ of 0.49 nM. NUAK1-IN-3 also inhibits NUAK2 and JAK3 with IC₅₀ values of 265 and 225 nM. NUAK1-IN-3 engages Glu139 of NUAK1, forms a salt bridge between its bicyclic ring nitrogen and Asp142, and uses a fluorine atom to enhance hydrophobic binding interactions. NUAK1-IN-3 attenuates MYPT1 phosphorylation, suppresses the NUAK1-MYPT1 signaling axis, and inhibits proliferation, migration, and invasion of triple-negative breast cancer cells. NUAK1-IN-3 reverses TGF-β1-induced epithelial-mesenchymal transition (EMT) marker alterations, downregulates Snail and N-cadherin, and upregulates E-cadherin in tumor tissues. NUAK1-IN-3 suppresses tumor growth in triple-negative breast cancer xenograft models. NUAK1-IN-3 can be used for the research of triple-negative breast cancer.

OICR19451 is an orally active dual NUAK1/NUAK2 and MARK2/MARK3 kinase inhibitor, with IC₅₀ values of 12 nM and 10 nM against NUAK1 and NUAK2, and 101 nM and 124 nM against MARK2 and MARK3, respectively. OICR19451 modulates the Hippo signaling pathway, increases the phosphorylation level of YAP, enhances the cytoplasmic localization of YAP/TAZ, and inhibits the expression of oncogenes. OICR19451 inhibits cancer cell growth, reduces metastasis, promotes tumor capsule formation, and improves mouse survival in an orthotopic breast cancer model. OICR19451 can be used for research related to triple-negative breast cancer.