MOTS-c
MOTS-c is a 16-amino-acid mitochondrial-encoded peptide (mitochondrial-derived peptide, MDP) whose open reading frame lies within the 12S rRNA region of mitochondrial DNA. In basic research (including the laboratories of Changhan Lee and Pinchas Cohen) it is described as a regulator of metabolic homeostasis and an activator of the AMPK pathway, and is sometimes discussed as an 'exercise mimetic'. The evidence comes almost entirely from cell and animal models; controlled human trials of MOTS-c as a therapeutic are lacking. It is not approved as a medicine anywhere and is traded on the grey market as a research chemical.
Mechanism of action
MOTS-c arises from a short open reading frame located in the 12S rRNA region of the mitochondrial genome — unlike most peptides it is therefore not encoded by nuclear DNA. Mechanistically, preclinical work describes MOTS-c as modulating the folate cycle and the de novo purine biosynthesis tethered to it, thereby affecting the AMP/ATP ratio and, downstream, AMP-activated protein kinase (AMPK). Under metabolic stress, an AMPK-dependent translocation of the peptide into the cell nucleus and involvement in the regulation of stress-responsive genes (including via antioxidant-response-element-regulated transcription factors) have also been reported. These models derive predominantly from cell culture and rodents; the extent to which they reflect human physiology after administration of exogenous synthetic MOTS-c is not established by human studies.
L'evidenza in sintesi
Cosa mostrano gli studi
Dove gli studi divergono
Does exogenously administered MOTS-c improve metabolism or performance in humans?
Farmacocinetica
Vie di somministrazione nella letteratura
Uso più sicuro e rischi
Eventi avversi noti dagli studi
Interazioni e combinazioni
Rischi e aspetti igienici nella letteratura
'Exercise mimetic' as a hypothesis, not a proven human effect
Osservazioni aneddotiche
Stato legale per paese
Calcolatore di ricostituzione
I peptidi arrivano come polvere secca. Una volta disciolti in un liquido (ricostituzione), questo calcolatore risponde a una sola domanda: quanta sostanza c'è in un millilitro di soluzione dopo?
- 1Inserisci la quantità di sostanza del flacone (riportata sull'etichetta).
- 2Inserisci quanto solvente aggiungi.
- 3Risultato = concentrazione in mg per mL.
Cofattori
Questi cofattori si riferiscono alla classe del peptide, non a un uso specifico. Nessuna raccomandazione, nessun dosaggio.
Registro degli studi
The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance
MOTS-c is an exercise-induced mitochondrial-encoded regulator of age-dependent physical decline and muscle homeostasis
The Effect of Chronic Endurance Exercise on Serum Levels of MOTS-c and Humanin in Professional Athletes
MOTS-c is an exercise-induced mitochondrial-encoded regulator of age-dependent physical decline and muscle homeostasis
Fonti e metodologia
Ricevi nuovi studi su MOTS-c
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