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Roles of mTOR Signaling in Tissue Regeneration
Xiangyong Wei1, Lingfei Luo2, Jinzi Chen3
1Laboratory of Molecular Developmental Biology, School of Life Sciences, Southwest University, Beibei, Chongqing 400715, China. xiangyongwei2016@outlook.com.
Abstract:
The mammalian target of rapamycin (mTOR), is a serine/threonine protein kinase and belongs to the phosphatidylinositol 3-kinase (PI3K)-related kinase (PIKK) family. mTOR interacts with other subunits to form two distinct complexes, mTORC1 and mTORC2. mTORC1 coordinates cell growth and metabolism in response to environmental input, including growth factors, amino acid, energy and stress. mTORC2 mainly controls cell survival and migration through phosphorylating glucocorticoid-regulated kinase (SGK), protein kinase B (Akt), and protein kinase C (PKC) kinase families. The dysregulation of mTOR is involved in human diseases including cancer, cardiovascular diseases, neurodegenerative diseases, and epilepsy. Tissue damage caused by trauma, diseases or aging disrupt the tissue functions. Tissue regeneration after injuries is of significance for recovering the tissue homeostasis and functions. Mammals have very limited regenerative capacity in multiple tissues and organs, such as the heart and central nervous system (CNS). Thereby, understanding the mechanisms underlying tissue regeneration is crucial for tissue repair and regenerative medicine. mTOR is activated in multiple tissue injuries. In this review, we summarize the roles of mTOR signaling in tissue regeneration such as neurons, muscles, the liver and the intestine.
Insights
The mammalian target of rapamycin (mTOR) pathway regulates cell growth and survival. This review explores mTOR
Area of Science:
- Cell Biology
- Molecular Biology
- Regenerative Medicine
Background:
- The mammalian target of rapamycin (mTOR) is a key kinase regulating cell growth, metabolism, survival, and migration.
- mTOR functions in two complexes, mTORC1 and mTORC2, with distinct roles.
- Dysregulation of mTOR signaling is implicated in diseases like cancer and neurodegeneration.
Purpose of the Study:
- To review the critical roles of mTOR signaling in tissue regeneration.
- To highlight the significance of understanding mTOR in regenerative medicine.
Main Methods:
- Literature review of studies on mTOR signaling and tissue regeneration.
- Analysis of mTOR's involvement in neuronal, muscle, liver, and intestinal regeneration.
Main Results:
- mTOR signaling is activated in response to various tissue injuries.
- mTOR plays a crucial role in the regeneration of multiple tissues, including neurons, muscles, liver, and intestine.
- Understanding mTOR mechanisms is vital for enhancing mammalian regenerative capacity.
Conclusions:
- mTOR signaling is a central regulator of tissue repair and regeneration across different mammalian tissues.
- Targeting mTOR pathways holds promise for advancing regenerative medicine and treating tissue damage.
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