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Takrouri K, Chen T, Papadopoulos E, Sahoo R, Kabha E, Chen H, Cantel S, Wagner G, Halperin JA, Aktas BH, Chorev M. Structure-activity relationship study of 4EGI-1, small molecule eIF4E/eIF4G protein-protein interaction inhibitors. Eur J Med Chem 2014; 77:361-77. [PMID: 24675136 DOI: 10.1016/j.ejmech.2014.03.034] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Revised: 03/04/2014] [Accepted: 03/12/2014] [Indexed: 01/15/2023]
Abstract
Protein-protein interactions are critical for regulating the activity of translation initiation factors and multitude of other cellular process, and form the largest block of untapped albeit most challenging targets for drug development. 4EGI-1, (E/Z)-2-(2-(4-(3,4-dichlorophenyl)thiazol-2-yl)hydrazono)-3-(2-nitrophenyl)propanoic acid, is a hit compound discovered in a screening campaign of small molecule libraries as an inhibitor of translation initiation factors eIF4E and eIF4G protein-protein interaction; it inhibits translation initiation in vitro and in vivo. A series of 4EGI-1-derived thiazol-2-yl hydrazones have been designed and synthesized in order to delineate the structural latitude and improve its binding affinity to eIF4E, and increase its potency in inhibiting the eIF4E/eIF4G interaction. Probing a wide range of substituents on both phenyl rings comprising the 3-phenylpropionic acid and 4-phenylthiazolidine moieties in the context of both E- and Z-isomers of 4EGI-1 led to analogs with enhanced binding affinity and translation initiation inhibitory activities.
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Affiliation(s)
- Khuloud Takrouri
- Laboratory for Translational Research, Hematology, Brigham and Women's Hospital, Harvard Medical School, 20 Shattuck Street, Thorn 7, Boston, MA 02115, USA
| | - Ting Chen
- Laboratory for Translational Research, Hematology, Brigham and Women's Hospital, Harvard Medical School, 20 Shattuck Street, Thorn 7, Boston, MA 02115, USA
| | - Evangelos Papadopoulos
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, 240 Longwood Avenue, Boston, MA 02115, USA
| | - Rupam Sahoo
- Laboratory for Translational Research, Hematology, Brigham and Women's Hospital, Harvard Medical School, 20 Shattuck Street, Thorn 7, Boston, MA 02115, USA
| | - Eihab Kabha
- Laboratory for Translational Research, Harvard Medical School, USA
| | - Han Chen
- Laboratory for Translational Research, Harvard Medical School, USA
| | - Sonia Cantel
- Laboratory for Translational Research, Harvard Medical School, USA
| | - Gerhard Wagner
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, 240 Longwood Avenue, Boston, MA 02115, USA
| | - Jose A Halperin
- Laboratory for Translational Research, Hematology, Brigham and Women's Hospital, Harvard Medical School, 20 Shattuck Street, Thorn 7, Boston, MA 02115, USA
| | - Bertal H Aktas
- Laboratory for Translational Research, Hematology, Brigham and Women's Hospital, Harvard Medical School, 20 Shattuck Street, Thorn 7, Boston, MA 02115, USA
| | - Michael Chorev
- Laboratory for Translational Research, Hematology, Brigham and Women's Hospital, Harvard Medical School, 20 Shattuck Street, Thorn 7, Boston, MA 02115, USA.
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