MOTS-c is a mitochondrial-derived peptide (MDP) that is encoded within the mitochondrial DNA of mammals. It was first identified in 2016 and has since been the subject of intense research due to its potential role in various physiological processes, including the regulation of energy metabolism and the immune response.
MOTS-c is synthesized as a precursor protein, which is then cleaved to release the mature peptide. The peptide is composed of 81 amino acids and contains two mitochondrial targeting sequences (MTSs) that allow it to be imported into the mitochondria. Once inside the mitochondria, MOTS-c is thought to interact with various mitochondrial proteins, including those involved in the electron transport chain, to modulate their activity.
One of the main functions of MOTS-c is its role in regulating energy metabolism. Studies have shown that MOTS-c can stimulate the activity of the mitochondrial respiratory chain, leading to an increase in the production of adenosine triphosphate (ATP), the primary energy currency of cells. This effect is thought to be mediated by MOTS-c’s ability to activate the mitochondrial protein peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PGC-1α), which plays a key role in the regulation of energy metabolism.
In addition to its role in energy metabolism, MOTS-c has also been shown to play a role in the immune response. The peptide has been found to stimulate the production of inflammatory cytokines, such as interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α), by immune cells. This suggests that MOTS-c may play a role in the body’s response to infection and injury.
MOTS-c has also been found to have anti-inflammatory effects and has been shown to suppress the production of inflammatory cytokines in certain cell types. Furthermore, MOTS-c has been found to promote the production of regulatory T cells, which suppress the immune response and prevent excessive inflammation.
MOTS-c also has been studied extensively in the context of aging and lifespan. It has been shown that MOTS-c levels decrease with age, and that restoring MOTS-c levels in aged animals can improve the physiological parameters associated with aging, such as glucose metabolism, physical activity, and cognitive function.
Moreover, MOTS-c has been found to have beneficial effects in a variety of age-related diseases such as obesity, type 2 diabetes, and cancer. In these diseases, MOTS-c has been found to improve insulin sensitivity, glucose metabolism, and cancer cell proliferation.
In conclusion, MOTS-c is a mitochondrial-derived peptide that plays a crucial role in regulating energy metabolism and the immune response. Studies have shown that MOTS-c can stimulate the activity of the mitochondrial respiratory chain, leading to an increase in the production of adenosine triphosphate (ATP) and the peptide can also play a role in the body’s response to infection and injury. Its anti-inflammatory effects, its ability to promote the production of regulatory T cells, and its ability to improve glucose metabolism and cancer cell proliferation, makes MOTS-c a promising target for the development of new therapies for various age-related diseases.