Halistanol sulfates I and J, new SIRT1-3 inhibitory steroid sulfates from a marine sponge of the genus Halichondria

J Antibiot (Tokyo). 2018 Feb;71(2):273-278. doi: 10.1038/ja.2017.145. Epub 2017 Nov 29.

Abstract

Two new analogs of halistanol sulfate (1) were isolated from a marine sponge Halichondria sp. collected at Hachijo-jima Island. Structures of these new halistanol sulfates I (2) and J (3) were elucidated by spectral analyses. Compounds 1-3 showed inhibitory activity against SIRT 1-3 with IC50 ranges of 45.9-67.9, 18.9-21.1 and 21.8-37.5 μM, respectively. X-ray crystallography of the halistanol sulfate (1) and SIRT3 complex clearly indicates that 1 binds to the exosite of SIRT3 that we have discovered in this study.

MeSH terms

  • Animals
  • Antineoplastic Agents / isolation & purification
  • Antineoplastic Agents / pharmacology
  • Crystallography, X-Ray
  • Drug Screening Assays, Antitumor
  • HeLa Cells
  • Humans
  • Magnetic Resonance Spectroscopy
  • Models, Molecular
  • Molecular Structure
  • Porifera / chemistry*
  • Sirtuin 1 / antagonists & inhibitors
  • Sirtuin 2 / antagonists & inhibitors
  • Sirtuin 3 / antagonists & inhibitors
  • Sirtuins / antagonists & inhibitors*
  • Spectrometry, Mass, Electrospray Ionization
  • Spectrophotometry, Ultraviolet
  • Sterols / isolation & purification*
  • Sterols / pharmacology*

Substances

  • Antineoplastic Agents
  • Sterols
  • halistanol trisulfate
  • SIRT1 protein, human
  • SIRT2 protein, human
  • SIRT3 protein, human
  • Sirtuin 1
  • Sirtuin 2
  • Sirtuin 3
  • Sirtuins