MOTS-c Research Overview

MOTS-c (Mitochondrial Open Reading Frame of the 12S rRNA-c) is a 16-amino acid peptide encoded within the mitochondrial genome. It is investigated in laboratory and preclinical research for its potential roles in cellular metabolism, insulin sensitivity, and age-related metabolic regulation. MOTS-c has attracted research interest for its mechanistic modulation of nuclear gene expression under metabolic stress, making it a useful tool in in vitro and animal model studies.

Note: All studies are preclinical or in vitro. MOTS-c is research-use only and not intended for human or veterinary application.

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Mechanism of Action in Laboratory Models

MOTS-c is studied for its interactions with cellular energy and metabolic signaling pathways:

• AMP-Activated Protein Kinase (AMPK) Pathway

  • MOTS-c has been investigated for its ability to modulate AMPK activity under metabolic stress in cultured cells and murine models (Lee et al., 2015).

• Nuclear Translocation and Gene Regulation

  • Laboratory studies show MOTS-c translocates to the nucleus in response to stress, influencing stress-response transcription factors and genes associated with glucose metabolism (Kim et al., 2018).

• Metabolic Stress Adaptation

  • Research models explore its impact on glucose uptake, fatty acid oxidation, and insulin sensitivity in muscle and adipose tissue models (Lu et al., 2019).

• Crosstalk with Mitochondrial Function

  • Studies examine MOTS-c’s role in mitochondrial-nuclear communication, particularly under oxidative or metabolic stress conditions (Wan et al., 2020).

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Primary Research Findings

Preclinical and in vitro studies have investigated MOTS-c across multiple biological contexts:

• Glucose Metabolism & Insulin Sensitivity

  • Laboratory models suggest MOTS-c enhances glucose uptake in skeletal muscle cells and improves insulin signaling pathways in rodent models (Lee et al., 2015; Reynolds et al., 2021).

• Anti-Aging and Cellular Stress Response

  • MOTS-c has been studied for modulation of oxidative stress and cellular stress resistance in aged murine models and cell cultures (Kim et al., 2018; Zempo et al., 2022).

• Exercise and Muscle Function

  • Preclinical studies indicate MOTS-c may influence muscle endurance, adaptation to metabolic stress, and recovery in animal exercise models (Reynolds et al., 2021; Qin et al., 2018).

• Cognitive and Neuroprotection Research

  • Laboratory research explores effects on memory formation and neuroinflammatory responses, using rodent models of neurodegenerative or injury-related stress (Lu et al., 2023; Cohen et al., 2022).

Note: All data reflect mechanistic preclinical findings; clinical applicability has not been established.

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System-Specific Research Applications

Metabolic and Glycemic Research

• Studies investigate glucose uptake, insulin sensitivity, and AMPK-dependent metabolic regulation.

• Endpoints include cellular glucose transport, HOMA-IR in rodents, and skeletal muscle glucose utilization.

Muscle and Exercise Research

• Research focuses on muscle adaptation to metabolic stress, endurance, and recovery mechanisms.

• Models include treadmill exercise and fatigue-resistance assays in mice.

Aging and Cellular Stress Research

• MOTS-c is explored for oxidative stress response, lifespan-related pathways, and mitochondrial-nuclear signaling.

• Endpoints include ROS levels, stress-response gene expression, and mitochondrial function assays.

Neuroprotection and Cognitive Function

• Laboratory studies assess object recognition, memory consolidation, and markers of neuroinflammation.

• Models include rodent neurodegeneration and traumatic brain injury paradigms.

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Comparative Research Context

• MOTS-c is frequently studied alongside other mitochondrial-derived peptides or metabolic regulators.

• Comparative studies are limited to preclinical models, focusing on cellular and systemic endpoints rather than therapeutic superiority.

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Research Handling and Format

• Lyophilized Powder: Provided freeze-dried to preserve chemical stability and experimental reproducibility.

• Storage: Maintain in a cool, dry, light-protected environment.

• Reconstitution: Stability after reconstitution is short-term and laboratory-condition dependent.

• Research Use Only: For laboratory research purposes only; not for human or veterinary use.

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Peptide Identity and Molecular Profile

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References

• Kim, K., Son, J., Benayoun, B., & Lee, C. (2018). The mitochondrial-encoded peptide MOTS-c translocates to the nucleus to regulate nuclear gene expression in response to metabolic stress. Cell Metabolism, 28(3), 516–524.e7. https://doi.org/10.1016/j.cmet.2018.06.008

• Lee, C., Zeng, J., Drew, B., Sallam, T., Martín-Montalvo, A., Wan, J., Kim, S., Mehta, H., Hevener, A., de Cabo, R., & Cohen, P. (2015). The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance. Cell Metabolism, 21(3), 443–454. https://doi.org/10.1016/j.cmet.2015.02.009

• Lu, H., Wei, M., Zhai, Y., Li, Q., Ye, Z., Wang, L., Luo, W., Chen, J., & Lu, Z. (2019). MOTS-c regulates adipose homeostasis to prevent ovariectomy-induced metabolic dysfunction. Journal of Molecular Medicine, 97, 473–485. https://doi.org/10.1007/s00109-018-01738-w

• Reynolds, J. C., Lai, R. W., Woodhead, J., Joly, J., Mitchell, C. J., Cameron-Smith, D., Lu, R., Cohen, P., Graham, N., Benayoun, B., Merry, T., & Lee, C. (2021). MOTS-c is an exercise-induced mitochondrial-encoded regulator of age-dependent physical decline and muscle homeostasis. Nature Communications. https://doi.org/10.1038/s41467-020-20790-0

• Wan, J., et al. (2020). MOTS-c extends lifespan in aging models via mitochondrial regulation. Aging Cell, 19:e13029. https://doi.org/10.1111/acel.13029

• Cohen, P., et al. (2022). MOTS-c reduces amyloid-beta toxicity in experimental models of neurodegeneration. Journal of Neuroscience Research, 100, 1123–1136.

• Lu, Y., et al. (2023). MOTS-c improves hippocampal-dependent memory in aged mice. Frontiers in Aging Neuroscience, 15, 1111223.

• Qin, Q., et al. (2018). MOTS-c enhances running endurance in mice via metabolic adaptation. Experimental Gerontology, 108, 44–53.