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Giaccio P, Charou D, Diakaki DI, Chita A, Gravanis A, Charalampopoulos I, Roussis V, Ioannou E. Butanolides and Butenolides from a Marine-Derived Streptomyces sp. Exert Neuroprotective Activity through Activation of the TrkB Neurotrophin Receptor. Mar Drugs 2023; 21:465. [PMID: 37755078 PMCID: PMC10532803 DOI: 10.3390/md21090465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 09/28/2023] Open
Abstract
Neurodegenerative diseases are incurable and debilitating conditions, characterized by progressive loss and degeneration of vulnerable neuronal populations. Currently, there are no effective therapies available for the treatment of most neurodegenerative disorders. A panel of extracts exhibiting interesting chemical profiles among a high number of bacterial strains isolated from East Mediterranean marine sediments and macroorganisms were evaluated for their activity on TrkB-expressing cells. Among them, the actinobacterial strain Streptomyces sp. BI0788, exhibiting neuroprotective activity in vitro, was selected and cultivated in large-scale. The chemical analysis of its organic extract resulted in the isolation of four new butanolides (1, 4-6), along with two previously reported butanolides (2 and 3) and eight previously reported butenolides (7-14). Compounds 2-4 and 7-14 were evaluated for their neuroprotective effects on TrkB-expressing NIH-3T3 cells. Among them, metabolites 3, 4, 7, 10, 11, 13 and 14 exhibited significant protective activity on the aforementioned cells through the activation of TrkB, the high-affinity receptor for the Brain-Derived Neurotrophic Factor (BDNF), which is well known to play a crucial role in neuronal cell survival and maintenance.
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Affiliation(s)
- Paolo Giaccio
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (P.G.); (D.-I.D.); (V.R.)
| | - Despoina Charou
- Department of Pharmacology, Medical School, University of Crete, 71003 Heraklion, Greece; (D.C.); (A.C.); (A.G.); (I.C.)
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology-Hellas (IMBB-FORTH), 70013 Heraklion, Greece
| | - Dafni-Ioanna Diakaki
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (P.G.); (D.-I.D.); (V.R.)
| | - Anna Chita
- Department of Pharmacology, Medical School, University of Crete, 71003 Heraklion, Greece; (D.C.); (A.C.); (A.G.); (I.C.)
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology-Hellas (IMBB-FORTH), 70013 Heraklion, Greece
| | - Achille Gravanis
- Department of Pharmacology, Medical School, University of Crete, 71003 Heraklion, Greece; (D.C.); (A.C.); (A.G.); (I.C.)
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology-Hellas (IMBB-FORTH), 70013 Heraklion, Greece
| | - Ioannis Charalampopoulos
- Department of Pharmacology, Medical School, University of Crete, 71003 Heraklion, Greece; (D.C.); (A.C.); (A.G.); (I.C.)
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology-Hellas (IMBB-FORTH), 70013 Heraklion, Greece
| | - Vassilios Roussis
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (P.G.); (D.-I.D.); (V.R.)
| | - Efstathia Ioannou
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (P.G.); (D.-I.D.); (V.R.)
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