Protein tyrosine phosphatase SHP2 is an oncogenic protein that can regulate different cytokine receptor and receptor tyrosine kinase signaling pathways. We report here the identification of a novel series of SHP2 allosteric inhibitors having an imidazopyrazine 6,5-fused heterocyclic system as the central scaffold that displays good potency in enzymatic and cellular assays. SAR studies led to the identification of compound , a highly potent SHP2 allosteric inhibitor. X-ray studies showed novel stabilizing interactions with respect to known SHP2 inhibitors. Subsequent optimization allowed us to identify analogue , which possesses excellent potency and a promising PK profile in rodents.
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http://dx.doi.org/10.1021/acsmedchemlett.2c00454 | DOI Listing |
Eur J Med Chem
January 2025
School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, PR China. Electronic address:
SHP2, a non-receptor protein tyrosine phosphatase involved in cancers, plays a pivotal role in numerous cellular signaling cascades, including the MAPK and PD-L1/PD-1 pathways. Although several SHP2 allosteric inhibitors have already entered clinical trials, none have been approved to date. Therefore, the development of new SHP2 allosteric inhibitors with improved efficacy is urgently required.
View Article and Find Full Text PDFEur J Med Chem
January 2025
School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China. Electronic address:
Src Homology-2 Domain Containing Protein Tyrosine Phosphatase-2 (SHP2) is a non-receptor-type protein tyrosine phosphatase (PTP), which is recognized as potential and attractive cancer therapeutic target. Currently, no SHP2 inhibitors have been approved for clinical use, and colorectal cancer (CRC) cells exhibited frequent resistance to reported SHP2 inhibitors, such as SHP099 and TNO155. Herein, we reported our discovery and optimization of phenyl urea as novel SHP2 inhibitors.
View Article and Find Full Text PDFHeliyon
November 2024
Translational Cancer Biology Research Unit, Cancer Research Malaysia, No. 1, Jalan SS12/1A, 47500, Subang Jaya, Selangor, Malaysia.
Oral squamous cell carcinoma (OSCC) is known to be driven by multiple intricated receptor tyrosine kinases (RTKs) including EGFR, PI3K/AKT and MAPK signaling pathways. However, whilst targeting EGFR with cetuximab has been approved for the treatment of OSCC, other single-agent inhibitors of the RTKs have shown modest effects in improving survival. From the genome-wide CRISPR/Cas9 screen on 21 OSCC cell lines, we have identified among the top essential genes in OSCC.
View Article and Find Full Text PDFInt Immunopharmacol
December 2024
Center for Natural Products Research, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610213, China. Electronic address:
Interferon alpha (IFNα) leads to therapeutic effects on various tumors, especially renal cell cancer (RCC), by directly protecting against tumors cell proliferation or indirectly inducing an anti-tumor immune response. However, new combination therapies are needed to enhance the efficacy of IFNα and reduce its adverse effects during long-term treatment. In this study, we found that the anti-proliferative effects of IFNα on RCC cells in vitro and in vivo were greater after the allosteric inhibition of SHP2 by SHP099 than after treatment with enzymatic inhibitors of SHP2.
View Article and Find Full Text PDFEur J Med Chem
December 2024
Center for Drug Discovery, China Pharmaceutical University, Nanjing, 210009, China. Electronic address:
Src homology-2-containing protein tyrosine phosphatase 2 (SHP2), a critical regulator of proliferation pathways and immune checkpoint signaling in various cancers, is an attractive target for cancer therapy. Here, we report the discovery of a novel series of substituted pyridine carboxamide derivatives as potent allosteric SHP2 inhibitors. Among them, compound C6 showed excellent inhibitory activity against SHP2 and antiproliferative effect on MV-4-11 cell line with IC values of 0.
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