2. Academic Validation
  3. Inhibition of adenosine kinase attenuates myocardial ischaemia/reperfusion injury

Inhibition of adenosine kinase attenuates myocardial ischaemia/reperfusion injury

  • J Cell Mol Med. 2021 Mar;25(6):2931-2943. doi: 10.1111/jcmm.16328.
Wenjun Wang 1 2 3 4 5,  Bailu Wang 6,  Shukun Sun 1 2 3 4 5,  Shengchuan Cao 1 2 3 4 5,  Xiaoxuan Zhai 1 2 3 4 5,  Chuanxin Zhang 1 2 3 4 5,  Qun Zhang 1 2 3 4 5,  Qiuhuan Yuan 1 2 3 4 5,  Yi Sun 1 2 3 4 5,  Mengyang Xue 1 2 3 4 5,  Jingjing Ma 1 2 3 4 5,  Feng Xu 1 2 3 4 5,  Shujian Wei 1 2 3 4 5,  Yuguo Chen 1 2 3 4 5
Affiliations

Affiliations

  • 1 Department of Emergency and Chest Pain Center, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.
  • 2 Clinical Research Center for Emergency and Critical Care Medicine of Shandong Province, Institute of Emergency and Critical Care Medicine of Shandong University, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.
  • 3 Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.
  • 4 The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese Ministry of Health and Chinese Academy of Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.
  • 5 The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.
  • 6 Clinical Trial Center, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.
PMID: 33523568 DOI: 10.1111/jcmm.16328
Abstract

Increased adenosine helps limit infarct size in ischaemia/reperfusion-injured hearts. In cardiomyocytes, 90% of adenosine is catalysed by Adenosine Kinase (ADK) and ADK inhibition leads to higher concentrations of both intracellular adenosine and extracellular adenosine. However, the role of ADK inhibition in myocardial ischaemia/reperfusion (I/R) injury remains less obvious. We explored the role of ADK inhibition in myocardial I/R injury using mouse left anterior ligation model. To inhibit ADK, the inhibitor ABT-702 was intraperitoneally injected or AAV9 (adeno-associated virus)-ADK-shRNA was introduced via tail vein injection. H9c2 cells were exposed to hypoxia/reoxygenation (H/R) to elucidate the underlying mechanisms. ADK was transiently increased after myocardial I/R injury. Pharmacological or genetic ADK inhibition reduced infarct size, improved cardiac function and prevented cell Apoptosis and Necroptosis in I/R-injured mouse hearts. In vitro, ADK inhibition also prevented cell Apoptosis and cell Necroptosis in H/R-treated H9c2 cells. Cleaved caspase-9, cleaved Caspase-8, cleaved Caspase-3, MLKL and the phosphorylation of MLKL and CaMKII were decreased by ADK inhibition in reperfusion-injured cardiomyocytes. X-linked inhibitor of Apoptosis protein (XIAP), which is phosphorylated and stabilized via the adenosine receptors A2B and A1/Akt pathways, should play a central role in the effects of ADK inhibition on cell Apoptosis and Necroptosis. These data suggest that ADK plays an important role in myocardial I/R injury by regulating cell Apoptosis and Necroptosis.

Keywords

X-linked inhibitor of apoptosis protein; adenosine kinase; apoptosis; myocardial ischaemia/reperfusion injury; necroptosis.

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