Mitochondrial long noncoding RNAs as blood based biomarkers for cardiac remodeling in patients with hypertrophic cardiomyopathy
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Published on: September 15, 2018
Janina Kitow1, Anselm A Derda1, Julia Beermann1
1Institute of Molecular and Translational Therapeutic Strategies (IMTTS), IFB-Tx, Hannover Medical School, Hannover, Germany;
Insights
Specific long noncoding RNAs (lncRNAs) were found to be elevated in patients with hypertrophic obstructive cardiomyopathy (HOCM). These lncRNAs, uc004cov.4 and uc022bqu.1, show promise as potential biomarkers for identifying HOCM.
Area of Science:
- Cardiology
- Genetics
- Molecular Biology
Background:
- Hypertrophic cardiomyopathy (HCM) is a genetic heart condition with risks of sudden cardiac death.
- Hypertrophic obstructive cardiomyopathy (HOCM) presents with a left ventricular outflow gradient, distinct symptoms, and treatment needs compared to hypertrophic nonobstructive cardiomyopathy (HNCM).
- Long noncoding RNAs (lncRNAs) are implicated in mitochondrial and cardiac remodeling processes.
Purpose of the Study:
- To investigate the expression of mitochondrial and cardiac remodeling-associated lncRNAs in the blood of HOCM and HNCM patients.
- To determine if specific lncRNAs can differentiate between HOCM and HNCM.
- To explore the potential of lncRNAs as clinical biomarkers for HOCM.
Main Methods:
- Serum samples were collected from 57 HOCM patients, 28 HNCM patients, and 26 controls.
- Expression levels of known mitochondrial and cardiac remodeling-associated lncRNAs were quantified.
- Receiver operator characteristic (ROC) curve analysis was used to assess diagnostic potential.
Main Results:
- The lncRNAs uc004cov.4 and uc022bqu.1 were significantly upregulated in HOCM patients compared to controls and HNCM patients.
- ROC curve analysis demonstrated that uc004cov.4 and uc022bqu.1 could effectively identify HOCM patients.
- No significant changes in these lncRNAs were observed in HNCM patients.
Conclusions:
- Specific mitochondrial lncRNAs, uc004cov.4 and uc022bqu.1, are upregulated in HOCM.
- These lncRNAs serve as reliable indicators for identifying HOCM.
- uc004cov.4 and uc022bqu.1 have potential for development as future clinical biomarkers for HOCM.
Abstract:
Hypertrophic cardiomyopathy (HCM) is a hereditary heart disease with a high risk for sudden cardiac death in young people. As a subtype, hypertrophic obstructive cardiomyopathy (HOCM) additionally has a left ventricular outflow gradient, showing stronger symptoms and requires a different treatment compared with hypertrophic nonobstructive cardiomyopathy (HNCM). In this study our aim was to investigate the regulation of mitochondrial and cardiac remodeling associated long noncoding RNAs (lncRNAs) in blood of patients affected with HOCM and HNCM. We included 28 HNCM, 57 HOCM, and 26 control inviduals. Already known mitochondrial and cardiac remodeling associated lncRNAs uc004cos.4, uc004coz.1, uc004cov.4, uc011mfi.2, uc022bqw.1, uc022bqs.1, and uc022bqu.1 were amplified in serum of these patients and correlated with clinical parameters. Long noncoding RNAs uc004cov.4 and uc022bqu.1 were significantly increased in patients with HOCM but not in patients with HNCM. With the use of receiver operator characteristic (ROC) curve analysis, lncRNAs uc004cov.4 and uc022bqu.1 were able to identify HOCM patients. In our study we evidenced that the specific mitochondrial long noncoding RNAs uc004cov.4 and uc022bqu.1 were upregulated in patients with HOCM and they were also able to identify HOCM and could be developed as useful clinical biomarkers in the future.
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