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Faisal Aziz ; Kanamata Reddy ; Virneliz Fernandez Vega , et al. JMC,2024,67(3):1949-1960. DOI: 10.1021/acs.jmedchem.3c01763
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Abstract: The suppressor of T cell receptor signaling (Sts) proteins are negative regulators of immune signaling. Genetic inactivation of these proteins leads to significant resistance to infection. From a 590,000 compound high-throughput screen, we identified the 2-(1H)-quinolinone derivative, rebamipide, as a putative inhibitor of Sts phosphatase activity. Rebamipide, and a small library of derivatives, are competitive, selective inhibitors of Sts-1 with IC50 values from low to submicromolar. SAR analysis indicates that the quinolinone, the acid, and the amide moieties are all essential for activity. A crystal structure confirmed the SAR and reveals key interactions between this class of compound and the protein. Although rebamipide has poor cell permeability, we demonstrated that a liposomal preparation can inactivate the phosphatase activity of Sts-1 in cells. These studies demonstrate that Sts-1 enzyme activity can be pharmacologically inactivated and provide foundational tools and insights for the development of immune-enhancing therapies that target the Sts proteins.
Purchased from AmBeed: 2251-65-2 ; 90098-04-7 ; 4876-14-6 ; 90098-08-1 ; 874-60-2 ; 4876-10-2 ; 7158-32-9 ; 5271-67-0 ; 118-45-6 ; 73-22-3 ; 56-41-7 ; 34893-92-0 ; 403-43-0 ; 58757-38-3 ; 76903-88-3 ; 52-90-4 ; 6068-72-0 ; 2243-83-6 ; 38818-50-7 ; 16331-45-6 ; 36823-88-8 ; 90098-06-9 ; 90098-05-8 ; 3024-72-4 ; 618-46-2 ; 63024-43-1 ; 4122-68-3 ; 22980-09-2 ; 681806-75-7 ; 39544-74-6 ...More
CAS No. : | 38818-50-7 | MDL No. : | MFCD00035743 |
Formula : | C7H3Cl2NO3 | Boiling Point : | No data available |
Linear Structure Formula : | (O2N)ClC6H3COCl | InChI Key : | IWLGXPWQZDOMSB-UHFFFAOYSA-N |
M.W : | 220.01 | Pubchem ID : | 123477 |
Synonyms : |
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Signal Word: | Danger | Class: | 8 |
Precautionary Statements: | P280-P305+P351+P338-P310 | UN#: | 3261 |
Hazard Statements: | H314 | Packing Group: | Ⅱ |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.