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Mar Drugs ; 21(11)2023 Nov 14.
Article in English | MEDLINE | ID: mdl-37999417

ABSTRACT

In our chemical investigation into Penicillium sp. UJNMF0740 derived from mangrove sediment, fourteen indole diterpene analogs, including four new ones, are purified by multiple chromatographic separation methods, with their structures being elucidated by the analyses of NMR, HR-ESIMS, and ECD data. The antibacterial and neuroprotective effects of these isolates were examined, and only compounds 6 and 9 exhibited weak antibacterial activity, while compounds 5, 8, and 10 showed protective effects against the injury of PC12 cells induced by 6-hydroxydopamine (6-OHDA). Additionally, compound 5 could suppress the apoptosis and production of reactive oxygen species (ROS) in 6-OHDA-stimulated PC12 cells as well as trigger the phosphorylation of PI3K and Akt. Taken together, our work enriches the structural diversity of indole diterpenes and hints that compounds of this skeleton can repress the 6-OHDA-induced apoptosis of PC12 cells via regulating the PI3K/Akt signaling pathway, which provides evidence for the future utilization of this fascinating class of molecules as potential neuroprotective agents.


Subject(s)
Diterpenes , Neuroprotective Agents , Penicillium , Rats , Animals , PC12 Cells , Proto-Oncogene Proteins c-akt/metabolism , Oxidopamine/toxicity , Phosphatidylinositol 3-Kinases/metabolism , Penicillium/chemistry , Reactive Oxygen Species/metabolism , Apoptosis , Diterpenes/pharmacology , Diterpenes/chemistry , Indoles/pharmacology , Indoles/chemistry , Anti-Bacterial Agents/pharmacology , Neuroprotective Agents/pharmacology
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