Inhibition of adenosine kinase alleviates hypertrophic cardiomyopathy by ameliorating coronary microvascular

Fangfang Wan1, Bingxuan Ma1, Ziqiang Han1

  • 1State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing 100037, China.

ESC Heart Failure
|April 22, 2026
PubMed

Insights

Hypertrophic cardiomyopathy (HCM) treatment needs new targets. Adenosine kinase (ADK) is a causal gene for HCM, and inhibiting it with dabigatran shows therapeutic promise.

Area of Science:

  • Cardiovascular Genetics
  • Pharmacology
  • Molecular Medicine

Background:

  • Hypertrophic cardiomyopathy (HCM) presents significant therapeutic challenges with limited treatment options.
  • There is an urgent need to identify novel therapeutic targets for HCM.

Purpose of the Study:

  • To identify causal druggable genes for Hypertrophic cardiomyopathy (HCM) using genetic analyses.
  • To validate Adenosine kinase (ADK) as a therapeutic target and explore drug repurposing for HCM treatment.

Main Methods:

  • Mendelian randomization and colocalization analyses were performed using large-scale HCM genome-wide association data.
  • Candidate gene ADK was validated in HCM mice and endothelial cells (ECs); drug repurposing involved molecular docking, simulations, and CETSA.
  • In vitro and in vivo functional verification of ADK inhibition and potential drugs was conducted.

Main Results:

  • Adenosine kinase (ADK) was identified as a causal gene for HCM.
  • ADK inhibition in HCM mice attenuated cardiac hypertrophy, fibrosis, and microvascular dysfunction, and rescued EC function.
  • Dabigatran was identified as a high-affinity ADK binder, and its administration ameliorated microvascular dysfunction and cardiac remodeling in HCM mice.

Conclusions:

  • Adenosine kinase (ADK) is established as a viable therapeutic target for Hypertrophic cardiomyopathy (HCM).
  • Targeting ADK offers a promising strategy for managing microvascular dysfunction in HCM.
  • Drug repurposing suggests dabigatran may benefit HCM patients through ADK inhibition.
Abstract

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