Two new secondary metabolites, saccharochlorines A and B, from a marine bacterium Saccharomonospora sp. KCTC-19160

Tu Cam Le, Nikita Katila, Songhee Park, Jihye Lee, Inho Yang, Hyukjae Choi, Dong Young Choi, Sang Jip Nam

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6 Scopus citations

Abstract

Two new chlorinated secondary metabolites, saccharochlorines A and B (1 and 2), were isolated from the saline cultivation of a marine-derived bacterium Saccharomonospora sp. (KCTC-19160). The chemical structures of the saccharochlorines were elucidated by 2D NMR and MS spectroscopic data. Saccharochlorines A and B (1 and 2) exhibit weak inhibition of β-secretase (BACE1) in biochemical inhibitory assay, but they induced the release of Aβ (1–40) and Aβ (1–42) in H4-APP neuroglial cells. This discrepancy might be derived from the differences between the cellular and sub-cellular environments or the epigenetic stimulation of BACE1 expression.

Original languageEnglish
Article number127145
JournalBioorganic and Medicinal Chemistry Letters
Volume30
Issue number11
DOIs
StatePublished - 1 Jun 2020

Bibliographical note

Publisher Copyright:
© 2020 Elsevier Ltd

Keywords

  • Chlorinated secondary metabolites
  • Marine natural products
  • Saccharomonospora sp.

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