
AOD-9604
AOD-9604 is a modified HGH fragment 176-191 with disulfide bridge modification, studied for lipolytic activity without IGF-1 or insulin resistance effects — with FDA GRAS designation and Phase IIb human trial data.
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MOTS-c is a 16-amino-acid mitochondrial-derived peptide (encoded in mitochondrial 12S rRNA) studied in animal models as an exercise mimetic — activating AMPK, improving insulin sensitivity, and declining with age.
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How it works
MOTS-c activates AMPK and the folate-methionine cycle, promoting insulin-independent glucose uptake in skeletal muscle. In rodent studies, MOTS-c administration improves insulin sensitivity, reduces adiposity, and activates metabolic pathways normally engaged by exercise. Plasma MOTS-c declines with age, rises with physical activity — positioning it as a mitochondrial-nuclear metabolic communication signal.
Compound profile
Product definition
MOTS-c is a 16-amino-acid mitochondrial-derived peptide (encoded in mitochondrial 12S rRNA) studied in animal models as an exercise mimetic — activating AMPK, improving insulin sensitivity, and declining with age.
MOTS-c (Mitochondrial ORF of the 12S rRNA Type-C) is a 16-amino-acid peptide discovered by Changhan David Lee's group at USC, encoded by a small open reading frame within the 12S rRNA gene of the mitochondrial genome. Unlike all prior research peptides, it is not a nuclear gene product — it is a mitochondria-encoded signaling molecule that translocates from mitochondria to the nucleus and into systemic circulation, functioning as a retrograde signal from the mitochondria to the rest of the organism. The functional research profile documents AMPK activation as the primary downstream effect in skeletal muscle — the same kinase activated by metformin and physical exercise. MOTS-c-treated rodents show improved glucose tolerance, increased skeletal muscle glucose uptake (GLUT4 translocation), reduced diet-induced obesity, and enhanced physical performance in exercise capacity models. The discovery that plasma MOTS-c rises with exercise and declines with age across multiple mammalian species has made it a central compound in the emerging field of mitochondria-aging research.
Research audience
MOTS-c is used by researchers in mitochondrial biology, aging science, metabolic disease, AMPK pharmacology, exercise physiology, and insulin resistance research. It is the foundational compound for studying mitochondrial-derived peptide signaling and is particularly relevant for investigators studying how mitochondrial function communicates with systemic metabolism.
Research context
MOTS-c was discovered in 2015 by Changhan David Lee's group at USC and published in Cell Metabolism. The discovery that the mitochondrial genome encodes a secreted peptide that functions as a systemic metabolic regulator was a conceptual advance for mitochondrial biology — prior to this, the mitochondrial genome was assumed to encode only structural components of the oxidative phosphorylation machinery. Subsequent research has established MOTS-c as the best-characterized member of the MDP class. In rodent obesity models, systemic MOTS-c administration reverses high-fat diet-induced obesity, improves glucose homeostasis, and increases physical exercise capacity — effects attributed to AMPK activation in skeletal muscle and adipose tissue. The folate-methionine cycle activation provides a mechanism for MOTS-c's effects on AMPK independent of direct adenylate kinetics. Human aging studies have documented age-related decline in plasma MOTS-c levels and inverse correlation between MOTS-c levels and obesity/metabolic syndrome markers, supporting the hypothesis that declining MDP signaling contributes to metabolic aging. Phase I clinical research with MOTS-c is ongoing, making it one of the few mitochondrial-derived peptides with early human data in the pipeline.
Common questions
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HGH Fragment 176-191 is a 16-amino-acid GH C-terminal peptide studied in preclinical adipose models for lipolysis promotion without IGF-1 stimulation, anabolic effects, or insulin resistance.
Research Use Only
Sold for laboratory and research purposes only. Not approved for, nor intended for, human or veterinary consumption, diagnostic use, or therapeutic application. These products have not been evaluated by the Food and Drug Administration. Keep out of reach of children. For use by qualified researchers only.
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