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A natural small molecule isoginkgetin alleviates hypercholesterolemia and atherosclerosis by targeting ACLY

  • Zhidan Zhang (Co-first Author)
  • , Meijie Chen (Co-first Author)
  • , Yitong Xu (Co-first Author)
  • , Zhihua Wang
  • , Zhenghong Liu
  • , Chenyang He
  • , Fanshun Zhang
  • , Xiaojun Feng
  • , Xiayun Ni
  • , Yuanli Chen
  • , Jixia Wang
  • , Xinmiao Liang
  • , Zhifu Xie
  • , Jingya Li
  • , Maciej Banach
  • , Jaroslav Pelisek
  • , Yuqing Huo
  • , Yunhui Hu
  • , Paul C. Evans
  • , Li Wang
  • Xiao-yu Tian, Jianbo Xiao, Yuhua Shang, Yijun Zheng, Xunde Xian*, Jianping Weng*, Suowen Xu*
*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

17 Downloads (CityUHK Scholars)

Abstract

Rationale: Atherosclerotic cardiovascular disease (ASCVD) represents the predominant cause of mortality and morbidity globally. Given the established role of hypercholesterolemia as a significant risk factor for ASCVD, the discovery of new lipid-lowering medications is of paramount importance. ATP citrate lyase (ACLY) is a crucial enzyme in cellular metabolism, providing acetyl-CoA as the building block for the biosynthesis of fatty acids and cholesterol. Consequently, it has emerged as a promising drug target for innovative treatments of lipid metabolic disorders.

Methods: Virtual screening of a natural product library was performed to identify small-molecule ACLY inhibitors, leading to the discovery of isoginkgetin (ISOGK). The lipid-lowering and anti-atherosclerotic effects of ISOGK were validated in hypercholesterolemic diet-induced animal models (mice and hamsters). The inhibitory effects of ISOGK on ACLY enzymatic activity were measured using commercial assay kits. The direct interaction between ISOGK and ACLY was confirmed by surface plasmon resonance (SPR) and cellular thermal shift assays (CETSA). Liver-specific ACLY knockdown mice were generated using GalNAc-conjugated siRNA (GalNAc-siAcly).

Results: ISOGK directly bind to ACLY and inhibit its enzymatic activity in vitro and in vivo. By inhibiting ACLY, ISOGK treatment thus alleviates hypercholesterolemia and atherosclerosis in mice and hamsters. However, ISOGK fails to attenuate lipid accumulation and the expression of lipid-metabolism related genes in Acly knockout or depleted hepatocytes. In vivo, the lipid-lowering and anti-atherosclerotic effects of ISOGK were reversed by hepatic knockdown of Acly via treatment with GalNAc-siAcly in mice.

Conclusions: Taken together, the present study identifies ISOGK as an effective and naturally-occurring small-molecule inhibitor of ACLY that limits hypercholesterolemia and atherosclerosis. ISOGK thus serves as a promising drug lead in cardiovascular therapeutics.

 © The author(s).
Original languageEnglish
Pages (from-to)4325-4344
JournalTheranostics
Volume15
Issue number10
Online published18 Mar 2025
DOIs
Publication statusPublished - 2025

Funding

This study was supported by National Natural Science Foundation of China (Grant Nos. 82370444, 12411530127). This work was also supported by the Program for Innovative Research Team of The First Affiliated Hospital of USTC (CXGG02), Anhui Provincial Natural Science Foundation (Grant No. 2208085J08), USTC Research Funds of the Double First-Class Initiative (no. YD9110002089) and the Research Funds of Centre for Leading Medicine and Advanced Technologies of IHM. SX is a recipient of Humboldt Research Fellowship from Alexander von Humboldt Foundation, Germany.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Research Keywords

  • Atherosclerosis
  • ATP-Citrate lyase (ACLY)
  • Hyperlipidemia
  • Isoginkgetin
  • lipid metabolism

Publisher's Copyright Statement

  • This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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