Wu J, Meng Q, Liu D, Fan A, Huang J, Lin W. Targeted isolation of sorbicilinoids from a deep-sea derived fungus with anti-neuroinflammatory activities.
PHYTOCHEMISTRY 2024;
219:113976. [PMID:
38237844 DOI:
10.1016/j.phytochem.2024.113976]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 01/01/2024] [Accepted: 01/07/2024] [Indexed: 01/25/2024]
Abstract
A chemical fingerprinting approach utilizing LC-MS/MS coupled with 2D NMR data was established to characterize the profile of sorbicilinoid-type metabolites from a deep-sea derived fungus Penicillium rubens F54. Targeted isolation of the cultured fungus resulted in the discovery of 11 undescribed sorbicilinoids namely sorbicillinolides A-K (1-11). Their structures were identified by extensive analyses of the spectroscopic data, including the calculation of electronic circular dichroism and optical rotation for configurational assignments. The cyclopentenone core of sorbicillinolides A-D is likely derived from sorbicillin/dihydrosorbicillin through a newly oxidative rearrangement. The stereoisomers of sorbicillinolides E-G incorporate a nitrogen unit, forming a unique hydroquinoline nucleus. Sorbicillinolides A and C exhibited significant anti-neuroinflammation in LPS-stimulated BV-2 macrophages, achieved by potent inhibition of NO and PGE2 production through the interruption of RNA transcription of iNOS, COX-2 and IL6 in the NF-κB signaling pathway. Further investigation identified COX-2 as a potential target of sorbicillinolide A. These findings suggest sorbicillinolide A as a potential lead for the development of a non-steroidal anti-neuroinflammatory agent.
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