Discovery of Diverse Sesquiterpenoids from Crossiella cryophila through Genome Mining and NMR Tracking

J Nat Prod. 2024 Feb 23;87(2):195-206. doi: 10.1021/acs.jnatprod.3c00830. Epub 2024 Jan 24.

Abstract

Terpenoids, the largest and most structurally diverse natural product family, are predominantly found in fungi and plants, with bacterial terpenoids forming a minor fraction. Here, we established an efficient platform that integrates genome mining and NMR-tracking for prioritizing strains and tracking bacterial terpenoids. By employing this platform, we selected Crossiella cryophila for a comprehensive investigation of its capacity for terpenoid production, resulting in the characterization of 15 sesquiterpenoids. These compounds comprise nine new sesquiterpenoids (1-9), along with six known analogs (10-15), which are categorized into five distinctive carbon skeletons: bicyclogermacrane, maaliane, cadinane, eudesmane, and nor-eudesmane. Their chemical structures were determined through a combination of spectroscopic analysis, single-crystal X-ray diffraction, and quantum chemical calculations. Notably, the absolute configurations of compounds 1, 2, 5-7, 9, and 13-15 were determined via single-crystal X-ray diffraction analyses. The selected compounds were evaluated for their anticancer, antimicrobial, and anti-inflammatory bioactivities; however, none of these compounds displayed any significant bioactivity. This study enriches the repertoire of bacterial terpenoids, offers a practical process for prioritizing strains for bacterial terpenoids discovery, and establishes a foundation for exploring terpenoid biosynthesis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Actinobacteria*
  • Anti-Inflammatory Agents
  • Molecular Structure
  • Sesquiterpenes* / chemistry
  • Sesquiterpenes, Eudesmane*
  • Terpenes / chemistry

Substances

  • Sesquiterpenes
  • Terpenes
  • Anti-Inflammatory Agents
  • Sesquiterpenes, Eudesmane

Supplementary concepts

  • Crossiella cryophila