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Isolation of Primary Mouse Hepatocytes for Nascent Protein Synthesis Analysis by Non-radioactive L-azidohomoalanine Labeling Method
Published on: October 23, 2018
Cardiovascular disease and mTOR signaling
Zhao Zhong Chong1, Yan Chen Shang, Kenneth Maiese
1Laboratory of Cellular and Molecular Signaling, New Jersey Health Sciences University, Newark, NJ 07101, USA.
Trends in Cardiovascular Medicine
|June 27, 2012
Summary
Mammalian target of rapamycin (mTOR) signaling pathways regulate cell growth and survival. Understanding mTOR
Area of Science:
- Cardiovascular Biology
- Cell Signaling
- Molecular Medicine
Background:
- The mammalian target of rapamycin (mTOR) pathway is crucial for cell growth and survival, operating through two main complexes: mTORC1 and mTORC2.
- While sharing components, mTORC1 is associated with Raptor, and mTORC2 with Rictor, mediating distinct cellular functions.
- mTOR signaling integrates with Wnt and growth factor pathways, essential for endothelial and cardiomyocyte development.
Purpose of the Study:
- To elucidate the role of mTOR signaling pathways in cardiovascular health and disease.
- To explore the protective mechanisms of mTOR activation against oxidative stress in cardiac and endothelial cells.
- To investigate the potential therapeutic implications of modulating mTOR pathways in cardiovascular conditions.
Main Methods:
- Review of existing literature on mTOR signaling in cardiovascular contexts.
- Analysis of mTORC1 and mTORC2 complex functions.
- Examination of mTOR's role in apoptosis, autophagy, angiogenesis, and cell death.
Main Results:
- mTOR activation regulates apoptosis and autophagy in differentiated endothelial and cardiac cells during oxidative stress, often via protein kinase B.
- These protective mTOR pathways can promote angiogenesis and limit cell death, supporting cardiac repair and tissue regeneration.
- Conversely, mTOR pathway blockade may be beneficial in certain scenarios to mitigate vasculopathy and improve microcirculatory flow.
Conclusions:
- mTOR signaling plays a dual role in cardiovascular disease, offering protective effects through promoting repair and regeneration, but also potentially contributing to pathology.
- Targeting mTOR pathways presents a promising therapeutic avenue for cardiovascular diseases, requiring careful consideration of specific contexts.
- Further research into the intricate regulatory mechanisms of mTOR is essential for developing effective cardiovascular therapies.
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