Humanin (HN)

Overview

Humanin was the first mitochondria-derived peptide (MDP) discovered, originally cloned from the occipital lobe of an Alzheimer's patient. It is a 24-amino acid peptide encoded from the 16S rRNA region of mitochondrial DNA with potent neuroprotective, cytoprotective, and anti-apoptotic properties. Research shows humanin levels decline with age but remain stable in long-lived species like naked mole-rats, and offspring of centenarians have significantly higher humanin levels.

Humanin exerts its effects through multiple mechanisms. It interacts with cell surface receptors including FPRL1 and CNTFR, activating PI3K/AKT signaling pathways that promote cell survival. It blocks pro-apoptotic proteins like Bax, reduces beta-amyloid toxicity in neurons, protects against oxidative stress, and promotes mitochondrial biogenesis. These actions support healthy cellular aging at a fundamental level.

Originally discovered for its ability to protect against amyloid-β toxicity in neuronal cells.

Promotes mitochondrial biogenesis via PI3K/AKT signaling in PD models.

Broad neuroprotective effects against various neurotoxic insults.

Overexpression increases lifespan in C. elegans, dependent on daf-16/Foxo pathway.

Mechanism

Humanin was the first mitochondria-derived peptide (MDP) discovered, originally cloned from the occipital lobe of an Alzheimer's patient. It is a 24-amino acid peptide encoded from the 16S rRNA region of mitochondrial DNA with potent neuroprotective, cytoprotective, and anti-apoptotic properties. Research shows humanin levels decline with age but remain stable in long-lived species like naked mole-rats, and offspring of centenarians have significantly higher humanin levels.

Humanin exerts its effects through multiple mechanisms. It interacts with cell surface receptors including FPRL1 and CNTFR, activating PI3K/AKT signaling pathways that promote cell survival. It blocks pro-apoptotic proteins like Bax, reduces beta-amyloid toxicity in neurons, protects against oxidative stress, and promotes mitochondrial biogenesis. These actions support healthy cellular aging at a fundamental level.

Originally discovered for its ability to protect against amyloid-β toxicity in neuronal cells.

Research areas

• Humanin was the first mitochondria-derived peptide (MDP) discovered, originally cloned from the occipital lobe of an Alzheimer's patient. It is a 24-amino acid peptide encoded from the 16S rRNA region of mitochondrial DNA with potent neuroprotective, cytoprotective, and anti-apoptotic properties. Research shows humanin levels decline with age but remain stable in long-lived species like naked mole-rats, and offspring of centenarians have significantly higher humanin levels.
• Humanin exerts its effects through multiple mechanisms. It interacts with cell surface receptors including FPRL1 and CNTFR, activating PI3K/AKT signaling pathways that promote cell survival. It blocks pro-apoptotic proteins like Bax, reduces beta-amyloid toxicity in neurons, protects against oxidative stress, and promotes mitochondrial biogenesis. These actions support healthy cellular aging at a fundamental level.
• Originally discovered for its ability to protect against amyloid-β toxicity in neuronal cells.
• Promotes mitochondrial biogenesis via PI3K/AKT signaling in PD models.
• Broad neuroprotective effects against various neurotoxic insults.
• Overexpression increases lifespan in C. elegans, dependent on daf-16/Foxo pathway.
• HNG analog improves metabolic healthspan parameters in middle-aged mice.
• Higher levels associated with longevity in centenarians and their offspring.
• Protects various cell types from stress-induced damage and death.
• Blocks pro-apoptotic proteins like Bax to prevent programmed cell death.
• Promotes mitochondrial function and biogenesis.

Research notes

• Injection site reactions
• Mild fatigue initially
• Headache (rare)
• Signs of allergic reaction
• Unusual persistent symptoms
• Active cancer (theoretical concern with anti-apoptotic effects)
• Pregnancy or breastfeeding
• Hypersensitivity to peptide components
• No. Humanin works at the cellular and mitochondrial level with slow-building benefits. Most users notice effects over weeks to months as the peptide accumulates in tissues and supports mitochondrial health. This is not a peptide for immediate results.

FAQs