Design, synthesis and evaluation of benzo[4,5]thiazolo[3,2-a]pyrimidin-4-one derivatives as novel MTA cooperative PRMT5 inhibitors for the treatment of MTAP-deleted cancers.
Compound 9u exhibited significant antiproliferative activity in MTAP-deleted HCT116 cancer cells, with an IC50 value of 13 nM, exhibiting 70-fold selectivity over MTAP wild type HCT116 cells, and 9u displayed robust efficacy across diverse MTAP-deleted cancer cell lines, achieving IC50 values of <1.5-51 nM.
Abstract
Protein arginine methyltransferase 5 (PRMT5) has emerged as a promising therapeutic target due to its critical roles in regulating fundamental cellular processes such as proliferation, migration, and differentiation. Although several PRMT5 inhibitors have been reported, but none have gained clinical approval. Herein, we describe the discovery of a novel series of benzo[4,5]thiazolo[3,2-a]pyrimidin-4-ones derivatives as MTA cooperative PRMT5 inhibitors. Compound 9u exhibited significant antiproliferative activity in MTAP-deleted HCT116 cancer cells, with an IC50 value of 13 nM, exhibiting 70-fold selectivity over MTAP wild type HCT116 cells. Furthermore, 9u displayed robust efficacy across diverse MTAP-deleted cancer cell lines, achieving IC50 values of <1.5-51 nM. Notably, it also showed favorable metabolic stability in both human and mouse liver microsomes. These findings establish a promising lead for the development of PRMT5-MTA inhibitors specifically targeting MTAP-deficient cancers.
Polo-like kinase 2 (PLK2), a serine/threonine kinase involved in cell cycle regulation, has emerged as a promising therapeutic target in cancer due to its role in tumor cell proliferation and survival. In this study, we report the design and synthesis of novel PLK2 inhibitors, featuring pyrazolo[3,4-d]pyrimidine derivatives. Among them, compounds 8 and 11 exhibited potent PLK2 inhibitory activity, with IC50 values of 0.36 μM and 0.78 μM, respectively (ON1231320, IC50 = 0.10 μM). In colorectal cancer cell lines SW480 and HT29, compounds 8 and 11 suppressed cell proliferation in a dose-dependent manner, induced apoptosis, caused cell cycle arrest, and inhibited anchorage-independent growth. Notably, compound 11 showed significant in vivo tumor growth efficacy in a xenograft mouse model (TGI = 69.37%), markedly superior to ON1231320 (TGI = 8.36%) with favorable pharmacokinetic parameters. These findings establish pyrazolo[3,4-d]pyrimidine derivatives as promising PLK2 inhibitors with strong therapeutic potential for colorectal cancer.
Seoyeong Yang, S. Ji, Soomin Kim et al.· European journal of medicina...· 0 citations
(R)-A17, a novel, highly selective PARP1 inhibitor featuring a unique tricyclic scaffold, is developed and established as a promising candidate and the design strategy for the next-generation PARP1-targeted therapy is validated.
Zhongning Guo, Rongrong Sun, Linyu Yang et al.· Journal of Medicinal Chemist...· 0 citations
It is demonstrated that benzofuran-furan-pyrano[2,3-c]pyrazole hybrids possess promising multifaceted in vitro anticancer activity by inhibiting cancer cell proliferation, migration, invasion, and clonogenicity while inducing ROS-mediated mitochondrial apoptosis, highlighting these hybrid scaffolds as attractive candidates for further anticancer drug development.
E. Hutanu, Bassam A. Najri, A. Abdelsalam et al.· RSC Advances· 0 citations
Rho-associated coiled-coil-containing kinase 2 (ROCK2) is a key regulator of cellular motility and invasion and represents a promising therapeutic target for metastatic breast cancer. Through systematic structure-activity relationship (SAR) studies, we designed and synthesized a novel series of 1-methyl-3,4-dihydro-1H-benzo[e][1,4]diazepine-2,5-dione derivatives as selective ROCK2 inhibitors. Strategic deuterium incorporation during structural optimization was employed to enhance pharmacokinetic profiles. This effort led to the identification of compound 22d, a highly potent deuterated analog with excellent ROCK2 inhibitory activity (IC50 = 13 nM) and remarkable selectivity (≥769-fold over ROCK1). In functional assays, 22d exhibited robust antimetastatic activity in vitro and significantly suppressed tumor metastasis in MDA-MB-231 breast cancer xenograft models. Mechanistically, its antimetastatic effects were attributed to selective inhibition of STAT3 phosphorylation at tyrosine 705 (Y705). Collectively, these findings establish 22d as a novel lead compound that impairs breast cancer metastasis through targeted disruption of the ROCK2-STAT3 signaling axis, providing a promising foundation for further therapeutic development against metastatic breast cancer.
Yueshan Li, Liting Zhang, Haixing Xu et al.· Journal of Medicinal Chemist...· 0 citations
A novel series of 5,6-diphenyl-1,2,4-triazine-3-yl-thioacetamide-chalcone hybrids (9a-n) was designed, synthesized, and evaluated for their antidiabetic potential. All derivatives exhibited potent in vitro α-glucosidase inhibitory activity (IC50 = 0.2-112 μM) compared with acarbose (IC50 = 750.0 μM). The most potent compound, 9b (IC50 = 0.2 μM), acted as a competitive inhibitor with a Ki value of 200 nM and demonstrated significant glucose-lowering activity in a zebrafish model. In addition, compound 9b effectively inhibited bovine serum albumin (BSA) glycation relative to aminoguanidine. Molecular docking and molecular dynamics revealed stable binding of compound 9b within the α-glucosidase active site, with a binding energy of -9.2 kcal/mol, compared with -4.04 kcal/mol for acarbose. According to the in silico ADMET analysis, compound 9b showed oral bioavailability comparable to acarbose, together with improved drug-like properties. Overall, these findings identify compound 9b as a promising lead α-glucosidase inhibitor with potent in vitro and in vivo antihyperglycemic activity, warranting further investigation for the treatment of type 2 diabetes.
Elika Salehi Ghalehsefid, Mohammad Halimi, Hassan Mohammadi et al.· European journal of medicina...· 0 citations
A novel series of benzofuran-based aryl urea derivatives incorporating a 1,3,4-thiadiazole linker were designed as dual VEGFR-2/BRAFWT inhibitors using sorafenib as a pharmacophoric template, with compound 7j emerging as the most active analogue.
Marwa I Serag, Mohamed R. Elnagar, Wafaa A. Ewes et al.· Bioorganic & Medicinal Chemi...· 0 citations
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