Presently provided are IDO inhibitors of general formulae (VII), (VIII) as shown below and pharmaceutical compositions thereof, useful for modulating an activity of indoleamine 2,3-dioxygenase; treating indoleamine 2,3-dioxygenase (IDO) mediated immunosuppression; treating a medical conditions that benefit from the inhibition of enzymatic activity of indoleamine-2,3-dioxygenase; enhancing the effectiveness of an anti-cancer treatment comprising administering an anti-cancer agent; treating tumor-specific immunosuppression associated with cancer; and treating immunosupression associated with an infectious disease.
Presently provided are IDO inhibitors of general formulae (VII), (VIII) as shown below and pharmaceutical compositions thereof, useful for modulating an activity of indoleamine 2,3-dioxygenase; treating indoleamine 2,3-dioxygenase (IDO) mediated immunosuppression; treating a medical conditions that benefit from the inhibition of enzymatic activity of indoleamine-2,3-dioxygenase; enhancing the effectiveness of an anti-cancer treatment comprising administering an anti-cancer agent; treating tumor-specific immunosuppression associated with cancer; and treating immunosupression associated with an infectious disease.
Design, Synthesis, and Pharmacological Evaluation of Novel Hybrid Compounds To Treat Sickle Cell Disease Symptoms
作者:Jean Leandro dos Santos、Carolina Lanaro、Lídia Moreira Lima、Sheley Gambero、Carla Fernanda Franco-Penteado、Magna Suzana Alexandre-Moreira、Marlene Wade、Shobha Yerigenahally、Abdullah Kutlar、Steffen E. Meiler、Fernando Ferreira Costa、ManChin Chung
DOI:10.1021/jm200531f
日期:2011.8.25
A novel series of thalidomide derivatives (4a-f) designed by molecular hybridization were synthesized and evaluated in vitro and in vivo for their potential use in the oral treatment of sickle cell disease symptoms. Compounds 4a-f demonstrated analgesic, anti-inflammatory, and NO-donor properties. Compounds 4c and 4d were considered promising candidate drugs and were further evaluated in transgenic sickle cell mice to determine their capacity to reduce the levels of the proinflammatory cytokine tumor necrosis factor alpha (TNF alpha). Unlike hydroxyurea, the compounds reduced the concentrations of TNF alpha to levels similar to those induced with the control dexamethasone (300 mu mol/kg). These compounds are novel lead drug candidates with multiple beneficial actions in the treatment of sickle cell disease symptoms and offer an alternative to hydroxyurea treatment.
Antiplatelet activity and TNF-α release inhibition of phthalimide derivatives useful to treat sickle cell anemia
作者:Rafael C. Chelucci、Isabela J. de Oliveira、Karina P. Barbieri、Maria E. Lopes-Pires、Marisa C. Polesi、Diego E. Chiba、Iracilda Z. Carlos、Sisi Marcondes、Jean L. Dos Santos、ManChin Chung
DOI:10.1007/s00044-019-02371-z
日期:2019.8
Sickle Cell Anemia (SCA) is one of the most prevalent hereditary hematological diseases worldwide. The disease is characterized by chronic inflammation, hypercoagulable state, and pro-thrombotic profile, which lead the vaso-occlusive process. In this work, we described the antiplatelet activity and the ability to reduce tumor necrosis factor-alpha (TNF-) levels of phthalimide derivatives. All compounds inhibited platelet aggregation induced by collagen and adenosine diphosphate, at levels ranging from 26.0 to 74.2% and 30.7 to 79.6%, respectively. The compounds exhibited reduced bleeding time compared to acetylsalicylic acid (ASA). Moreover, compounds 4c and 10c inhibited TNF- levels at 73.5% and 65.0%, respectively. These findings suggest that phthalimide derivatives 4c and 10c are promising lead compounds useful to prevent vaso-occlusion and inflammation associated with the sickle cell anemia.[GRAPHICS].
Novel Azido-Iodo Photoaffinity Ligands for the Human Serotonin Transporter Based on the Selective Serotonin Reuptake Inhibitor (<i>S</i>)-Citalopram
作者:Vivek Kumar、Nageswari Yarravarapu、David J. Lapinsky、Danielle Perley、Bruce Felts、Michael J. Tomlinson、Roxanne A. Vaughan、L. Keith Henry、John R. Lever、Amy Hauck Newman
DOI:10.1021/acs.jmedchem.5b00682
日期:2015.7.23
Three photoaffinity ligands (PALs) for the human serotonin transporter (hSERT) were synthesized based on the selective serotonin reuptake inhibitor (SSRI), (S)-citalopram (1). The classic 4-azido-3-iodo-phenyl group was appended to either the C-1 Or C-5 position of the parent molecule, with variable-length linkers, to generate ligands 15, 22, and 26: These ligands retained high to moderate affinity binding (K-i = 24-227 nM) for hSERT, as assessed by [H-3]5-HT transport inhibition. When tested against Ser438Thr hSERT, all three PALs showed dramatic rightward shifts in inhibitory potency, with K-i values ranging from 3.8 to 9.9 mu M, consistent with the role of Ser438 as a key residue for high-affinity binding of many SSRIs, including (S)-citalopram. Photoactivation studies demonstrated irreversible adduction to hSERT by all ligands, but the reduced (S)-citalopram inhibition of labeling by [I-125]15 compared to that by [I-125]22 and [I-125]26 suggests differences in binding mode(s). These radioligands will be useful for characterizing the drug protein binding interactions for (S)-citalopram at hSERT.