Discovery of thienopyrrolotriazine derivatives to protect mitochondrial function against Ab-induced neurotoxicity

Taehun Kim, Woo Seung Son, Mohammad Neaz Morshed, Ashwini M. Londhe, Seo Yun Jung, Jong Hyun Park, Woo Kyu Park, Sang Min Lim, Ki Duk Park, Sung Jin Cho, Kyu-Sung Jeong, Jiyoun Lee, Ae Nim Pae

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Abstract

Recovery of mitochondrial dysfunction has gained increasing attention as an alternative therapeutic strategy for Alzheimer's disease (AD). Recent studies suggested that the 18 kDa mitochondrial translocator protein (TSPO) has the potential to serve as a drug target for the treatment of AD. In this study, we generated a structure-based pharmacophore model and virtually screened a commercial library, identifying SVH07 as a virtual hit, which contained a tricyclic core structure, thieno[20,3’:4,5]pyrrolo[1,2-d] [1,2,4]triazine group. A series of SVH07 analogues were synthesized and their effects on the mitochondrial membrane potential and ATP production were determined by using neuronal cells under Abinduced toxicity. Among these analogues, compound 26 significantly recovered mitochondrial membrane depolarization and ATP production. In vitro binding assays indicated that SVH07 and 26 showed high affinities to TSPO with the IC50 values in a nanomolar range. We believe that compound 26 is a promising lead compound for the development of TSPO-targeted mitochondrial functional modulators with therapeutic potential in AD.
Original languageEnglish
Pages (from-to)240-256
Number of pages17
JournalEuropean Journal of Medicinal Chemistry
Volume141
DOIs
Publication statusPublished - 2017 Sep 21

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Kim, T., Son, W. S., Morshed, M. N., Londhe, A. M., Jung, S. Y., Park, J. H., Park, W. K., Lim, S. M., Park, K. D., Cho, S. J., Jeong, K-S., Lee, J., & Pae, A. N. (2017). Discovery of thienopyrrolotriazine derivatives to protect mitochondrial function against Ab-induced neurotoxicity. European Journal of Medicinal Chemistry, 141, 240-256. https://doi.org/10.1016/j.ejmech.2017.09.033