HEAD-TO-HEAD

HUMANIN VS MOTS-c

Humanin and MOTS-c are the two most-cited mitochondrial-derived peptides (MDPs), discovered roughly 14 years apart. Humanin is a 24-aa peptide encoded within the mitochondrial 16S rRNA gene · characterized first for anti-apoptotic neuroprotection against amyloid-beta (Hashimoto 2001). MOTS-c is a 16-aa peptide encoded within the mitochondrial 12S rRNA · characterized for AMPK activation and insulin-sensitivity (Lee 2015). Same family, different functions.

A · No. 027

HUMANIN

Mitochondrial-Derived Peptide · MDP

B · No. 010

MOTS-c

Mitochondrial 16-AA Peptide

SIDE BY SIDE

FIELD

A · HUMANIN

B · MOTS-c

Class

Mitochondrial-derived peptide (MDP)

Encoded by

Mitochondrial 16S rRNA short open reading frame

Mitochondrial 12S rRNA short open reading frame

Length

24 amino acids

16 amino acids

Discovery

Hashimoto et al. 2001 (PNAS PMID 11371641) from cDNA library of dying neurons

Lee et al. 2015 (Cell Metab PMID 25738459) Cohen group at USC

Primary mechanism

Anti-apoptotic via BAX inhibition · neuroprotection

AMPK activation · folate-cycle inhibition · nuclear translocation

Research focus

Alzheimer cell-line models · insulin sensitivity · longevity correlation

Insulin sensitivity · exercise-mimetic · physical-decline mitigation

Notable evidence

Muzumdar 2009 insulin action in obese rats · Lee 2015 longevity correlation

Lee 2015 (Cell Metab) · Reynolds 2021 (Nat Commun) aged mice exercise mimetic

FDA status

Not FDA-approved · research-use only

WADA status

Not listed (2026)

WHICH IS BETTER · BY GOAL

▶ Neuroprotection / Alzheimer researchA · HUMANIN

Hashimoto 2001 established humanin as a rescue factor against amyloid-beta toxicity in neuronal cell models. MOTS-c is not specifically framed as a neuroprotective compound.

▶ Exercise-mimetic / muscle-aging researchB · MOTS-c

Reynolds 2021 (Nat Commun, PMID 33473109) reported improved treadmill performance and grip strength in aged mice with MOTS-c. Humanin not specifically studied as an exercise mimetic.

▶ AMPK pathwayB · MOTS-c

MOTS-c is the canonical AMPK-activating MDP. Humanin's primary mechanism is anti-apoptotic via BAX, not AMPK.

▶ Anti-apoptotic / BAX-pathway researchA · HUMANIN

Humanin's primary characterized mechanism is BAX inhibition, blocking the intrinsic apoptosis pathway. MOTS-c does not have characterized BAX activity.

▶ Longevity correlation in human cohortsTIE

Both peptides have circulating levels that correlate with longevity in human population studies (humanin: Lee 2015 reviews of centenarian cohorts; MOTS-c: Du 2018 / Lu 2019). Magnitude varies by assay and population.

STACKING NOTE

Humanin + MOTS-c covers two non-overlapping branches of mitochondrial-derived peptide biology (anti-apoptotic + AMPK-activating). No published RCT studies the combination, but mechanistic complementarity is the basis for any Cellular Bioenergetics MDP-stack research framing.

SOURCED FROM GIGACOMPOUNDS

Both compounds are available as research-grade material at GigaCompounds · ≥99% purity · per-batch CoA. For laboratory research use only.

SOURCE AT GIGACOMPOUNDS ▶