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PGC-1 coactivators in the cardiovascular system
1Cardiovascular Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA.
Insights
The heart
Area of Science:
- Cardiovascular Biology
- Mitochondrial Function
- Transcriptional Regulation
Background:
- The heart requires substantial ATP, necessitating complex fuel and oxygen processing machinery within cardiomyocytes.
- Mitochondria are crucial for cardiac energy metabolism, constituting a significant portion of cardiac mass.
- PGC-1 proteins are key transcriptional coactivators involved in regulating cellular energy homeostasis.
Purpose of the Study:
- To review the literature on the role of PGC-1 proteins in cardiac function.
- To highlight recent developments concerning PGC-1s in both cardiac and vascular biology.
- To emphasize the importance of PGC-1s in orchestrating cellular processes related to energy demands.
Main Methods:
- Literature review of existing studies on PGC-1 proteins in cardiovascular and vascular systems.
- Synthesis of recent findings on the regulatory roles of PGC-1 coactivators.
- Focus on the coregulation of cellular processes in response to physiological cues.
Main Results:
- Established role of PGC-1 proteins in maintaining cardiac function and energy metabolism.
- Emerging evidence points to a significant role for PGC-1s in vascular biology.
- PGC-1s act as central orchestrators of complex cellular machineries in response to metabolic demands.
Conclusions:
- PGC-1 proteins are critical regulators of cardiac energy metabolism and function.
- Further research into the vascular roles of PGC-1s is warranted.
- Understanding PGC-1 regulation is key to addressing cardiovascular and metabolic diseases.
Abstract:
The beating heart consumes more ATP per weight than any other organ. The machineries required for this are many and complex. Fuel and oxygen must be transported via the vasculature, absorbed by cardiomyocytes, broken down, and regulated to match cellular demands. Much of this occurs in mitochondria, which comprise fully one third of cardiac mass. The PGC-1 proteins are transcriptional coactivators that have emerged as powerful orchestrators of these numerous processes, ensuring their proper coregulation in response to intracellular and extracellular cues. An important role for PGC-1s in cardiac function has been revealed over the past few years, and more recently interest in their role in the vasculature has been burgeoning. We review this literature, focusing on recent developments.
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