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Pluripotent Stem Cell Derived Cardiac Cells for Myocardial Repair
Published on: February 3, 2017
Proteins involved in salvage of the myocardium
Richard N M Cornelussen1, Ward Y R Vanagt, Frits W Prinzen
1Department of Physiology, Cardiovascular Research Institute, Maastricht University, The Netherlands. Richard.Cornelussen@fys.unimaas.nl
Insights
Heat shock proteins (HSPs) activate the heart's intrinsic protection mechanism, reducing cardiac damage after ischemia. Further research is needed to optimize HSP therapy for compromised hearts.
Area of Science:
- Cardiology
- Molecular Biology
- Biochemistry
Background:
- Cardiac ischemic disease remains a leading cause of death globally.
- The heart has an intrinsic protection mechanism, largely overlooked until the 1980s.
- Activating this mechanism can significantly reduce infarct size following ischemic events.
Purpose of the Study:
- To explore the role of heat shock proteins (HSPs) and other cardio-protective proteins in cardiac protection.
- To investigate the potential of activating these protective mechanisms for therapeutic benefit.
- To address the challenges of HSP efficacy in compromised hearts.
Main Methods:
- Review of existing literature on HSPs and cardio-protection.
- Analysis of the molecular functions of HSPs in cell homeostasis, protein folding, and degradation.
- Examination of the anti-oxidative, anti-apoptotic, and anti-inflammatory activities of HSP family members.
Main Results:
- HSPs are crucial for maintaining cell homeostasis and possess broad protective activities.
- Concerted action among various cardio-protective proteins enhances efficacy.
- HSP benefits may be diminished in compromised hearts compared to healthy ones.
Conclusions:
- HSPs offer therapeutic potential for cardiac protection, particularly in ischemic conditions.
- Understanding HSPs' role in compromised hearts is crucial for clinical applications.
- Developing safe and effective methods to activate HSPs is a key future direction.
Abstract:
In the Western world, cardiac ischemic disease is still the most common cause of death despite significant improvements of therapeutic drugs and interventions. The fact that the heart possesses an intrinsic protection mechanism has been systematically overlooked before the 1980s. It has been clearly shown that the activation of this mechanism can reduce the infarct size after an ischemic insult. Prerequisite is the induction of the synthesis of such cardio-protective proteins as heat shock proteins (HSPs) and anti-oxidative enzymes. HSPs are involved in the maintenance of cell homeostasis by guiding the synthesis, folding and degradation of proteins. Besides, the various family members cover a broad spectrum of anti-oxidative, anti-apoptotic and anti-inflammatory activities. Although the major inducible HSP72 has received most attention, other HSPs are able to confer cardioprotection as well. In addition, it seems that there is a concerted action between the various cardio-protective proteins. One drawback is that the beneficial effects of HSPs seem to be less effective in the compromised than in the normal heart. Although clinical studies have shown that there is a therapeutic potential for HSPs in the compromised heart, major efforts are needed to fully understand the role of HSPs in these hearts and to find a safe and convenient way to activate these protective proteins.
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