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Parkinson's disease proteins: Novel mitochondrial targets for cardioprotection
Uma A Mukherjee1, Sang-Bing Ong2, Sang-Ging Ong3
1The Hatter Cardiovascular Institute, Institute of Cardiovascular Science, University College London, London, UK.
Insights
Parkinson
Area of Science:
- Cardiovascular Research
- Neuroscience
- Mitochondrial Biology
Background:
- Ischemic heart disease (IHD) is a major global health burden, necessitating new strategies to protect the heart from ischemia/reperfusion injury (IRI).
- Mitochondrial dysfunction is central to both IHD and neurodegenerative conditions like Parkinson's disease (PD).
- Specific proteins implicated in familial PD are known to regulate mitochondrial health and cell survival in neurons.
Purpose of the Study:
- To review the presence and function of Parkinson's disease-associated proteins in the heart.
- To explore the potential of these proteins as novel therapeutic targets for cardioprotection against IRI.
- To investigate the link between mitochondrial dysfunction in PD and myocardial protection.
Main Methods:
- Literature review of studies on Parkinson's disease proteins (Parkin, PINK1, DJ-1, LRRK2, α-synuclein) in neuronal and cardiac tissues.
- Analysis of the known roles of these proteins in mitochondrial quality control, oxidative stress, and apoptosis.
- Exploration of existing research on the expression and function of these proteins in the cardiovascular system.
Main Results:
- Parkinson's disease proteins are expressed in the heart, suggesting a role beyond neuronal function.
- These proteins are critical for maintaining mitochondrial integrity, combating oxidative stress, and preventing cell death in neurons.
- Their presence and potential functions in the heart indicate a possible link to myocardial health and disease.
Conclusions:
- Parkinson's disease proteins represent a promising, yet understudied, area for developing novel cardioprotective therapies.
- Targeting these mitochondrial proteins could offer a new strategy to mitigate cardiomyocyte death and preserve heart function following IRI.
- Further research is warranted to elucidate the specific roles of these proteins in cardiac pathophysiology and their therapeutic potential.
Abstract:
Ischemic heart disease (IHD) is the leading cause of death and disability worldwide. Therefore, novel therapeutic targets for protecting the heart against acute ischemia/reperfusion injury (IRI) are required to attenuate cardiomyocyte death, preserve myocardial function, and prevent the onset of heart failure. In this regard, a specific group of mitochondrial proteins, which have been linked to familial forms of Parkinson's disease (PD), may provide novel therapeutic targets for cardioprotection. In dopaminergic neurons of the substantia nigra, these PD proteins, which include Parkin, PINK1, DJ-1, LRRK2, and α-synuclein, play essential roles in preventing cell death-through maintaining normal mitochondrial function, protecting against oxidative stress, mediating mitophagy, and preventing apoptosis. These rare familial forms of PD may therefore provide important insights into the pathophysiology underlying mitochondrial dysfunction and the development of PD. Interestingly, these PD proteins are also present in the heart, but their role in myocardial health and disease is not clear. In this article, we review the role of these PD proteins in the heart and explore their potential as novel mitochondrial targets for cardioprotection.
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