Humanin Made in USA — Third-Party Verified
Humanin is a naturally occurring 24-amino-acid mitochondria-derived peptide widely investigated in cell culture and preclinical models for its cytoprotective and metabolic signaling properties. PX1 Research supplies laboratory-grade humanin made in USA, manufactured under strict quality standards to ensure exceptional chemical purity, batch reproducibility, and verified low endotoxin levels. Every lot is independently audited by ISO 17025-accredited laboratories using HPLC and Mass Spectrometry.
Quick answer
Humanin is a naturally occurring 24-amino-acid mitochondria-derived peptide widely investigated in cell culture and preclinical models for its cytoprotective and metabolic signaling properties. PX1 Research supplies laboratory-grade humanin made in USA, manufactured under strict quality standards to ensure exceptional chemical purity, batch reproducibility, and verified low endotoxin levels. Every lot is independently audited by ISO 17025-accredited laboratories using HPLC and Mass Spectrometry.
Key takeaways
- Humanin was the first identified member of the mitochondria-derived peptide (MDP) family, encoded within the 16S ribosomal RNA gene of the mitochondrial genome.
- Synthesizing sequence-defined bioactive peptides like humanin presents technical challenges due to its specific hydrophobic amino acid cluster (LLLLT).
- To establish absolute chemical identity and purity, every production lot of humanin undergoes extensive analytical testing prior to release.
- Bacterial endotoxins (lipopolysaccharides, or LPS) introduce profound confounding variables into cell culture and physiological research, triggering inflammatory cytokine release that obscures experimental endpoints.
Overview of Humanin: A Mitochondrial-Derived Cytoprotective Peptide
Humanin was the first identified member of the mitochondria-derived peptide (MDP) family, encoded within the 16S ribosomal RNA gene of the mitochondrial genome. Structurally characterized as a 24-amino-acid peptide (MAPRGFSCLLLLTSEIDLPVKRRA), humanin plays a pivotal role in retrograde signaling between the mitochondrion and the cell nucleus. First isolated during functional screening for factors preventing cell death in neurodegenerative paradigms, humanin has since emerged as a broad-spectrum cytoprotective agent under laboratory investigation.
In cell-free and cell-based assays, humanin interacts with intracellular targets as well as specific cell-surface receptor complexes, including the tripartite receptor composed of the Ciliary Neurotrophic Factor Receptor alpha (CNTFRa), WSX-1, and gp130. By modulating downstream signaling cascades such as STAT3 and MAPK/ERK pathways, researchers utilize humanin research compounds to dissect basic cellular mechanisms governing survival, oxidative stress response, and organelle cross-talk. To explore broader mitochondrial signaling pathways, institutional investigators frequently consult the PX1 Research Library.
Why Domestic Synthesis Matters for Humanin Production
Synthesizing sequence-defined bioactive peptides like humanin presents technical challenges due to its specific hydrophobic amino acid cluster (LLLLT). Substandard or overseas synthesis frequently yields incomplete sequence truncated fragments, beta-sheet aggregation during cleavage, or residual organic solvent contaminants that impair baseline experimental reproducibility. Sourcing high-purity humanin made in usa guarantees that liquid- and solid-phase peptide synthesis (SPPS) protocols are executed under rigorous operational control within cGMP-compliant domestic facilities.
Domestic manufacturing at PX1 Research utilizes automated peptide synthesizers operating under validated inert-gas conditions, preventing unwanted oxidation of sensitive residues such as cysteine (Cys8). This dedicated infrastructure prevents batch-to-batch structural variance, guaranteeing that principal investigators receive consistent chemical architecture from vial to vial. Controlling every phase of synthesis within California and Arizona facilities provides institutional buyers with full traceability and rapid fulfillment schedules.
Analytical Rigor: HPLC and MS Verification via ISO 17025 Labs
To establish absolute chemical identity and purity, every production lot of humanin undergoes extensive analytical testing prior to release. High-Performance Liquid Chromatography (HPLC) is employed to assess sequence purity, ensuring that the primary peak accounts for greater than 98% of total integrated UV absorbance. Mass Spectrometry (ESI-MS or MALDI-TOF) is simultaneously conducted to verify exact molecular mass, confirming correct amino acid composition and the absence of deletion sequences.
Rather than relying on internal self-policing, PX1 Research routes every lot to independent, third-party ISO 17025-accredited testing facilities. Each shipment includes a comprehensive Certificate of Analysis (COA) detailing the analytical chromatograms, mass spectral peaks, peptide content estimation, and moisture content analysis. Researchers can review these standards through our dedicated mitochondrial peptide category.
Endotoxin Mitigation and Structural Integrity for In Vitro Assays
Bacterial endotoxins (lipopolysaccharides, or LPS) introduce profound confounding variables into cell culture and physiological research, triggering inflammatory cytokine release that obscures experimental endpoints. While many commercial suppliers neglect post-purification endotoxin screening, PX1 Research subjects all research-grade peptides to quantitative Limulus Amebocyte Lysate (LAL) testing.
Humanin supplied by PX1 Research is guaranteed to contain endotoxin levels below strictly established threshold limits (<0.1 EU/mg), ensuring that cellular responses observed in vitro reflect the intrinsic activity of the peptide rather than immune artifacts from pyrogenic contamination. For detailed information regarding our biological safety protocols, consult our overview on endotoxin testing standards.
Comparative Analysis: Humanin vs. MOTS-c vs. SS-31
When evaluating mitochondria-targeted agents for experimental paradigms, researchers frequently compare humanin against other notable metabolic and organelle-directed compounds, such as MOTS-c and SS-31 (Elamipretide). While all three target mitochondrial function, their molecular structures, primary receptor interfaces, and intracellular mechanisms exhibit distinct divergence.
Humanin functions predominantly through receptor-mediated extracellular-to-intracellular signaling via gp130/WSX-1/CNTFRa complexes and direct binding to pro-apoptotic protein Bax, exerting anti-apoptotic and cytoprotective effects. In contrast, MOTS-c is a 16-amino-acid mitochondrial-derived peptide that translocates to the nucleus under metabolic stress to regulate nuclear gene expression and systemic insulin sensitivity. Meanwhile, SS-31 is a synthetic tetrapeptide that targets the inner mitochondrial membrane specifically by binding to cardiolipin, optimizing electron transport chain efficiency without acting as a gene-encoded peptide messenger. Investigators exploring novel analogues may also evaluate SHLP peptides within the same broader family.
Preclinical Research Pathways: Cytoprotection and Metabolism
In preclinical model systems, humanin has been evaluated across a broad spectrum of tissue types. In neuronal cell cultures, in vitro data indicate that humanin protects against toxic insults induced by beta-amyloid peptides, serum deprivation, and excitotoxicity by inhibiting Bax translocation to the mitochondria, thereby preserving mitochondrial membrane potential.
In vascular and metabolic preclinical studies, rodent models demonstrate that humanin administration modulates insulin sensitivity, attenuates oxidative stress in endothelial cells, and protects myocardial tissue from ischemia-reperfusion injury. These findings highlight humanin's significance as a molecular probe for investigating organelle survival strategies, cellular longevity pathways, and stress-response networks.
Reconstitution, Handling, and Storage Protocols in the Laboratory
Proper reconstitution and handling are critical to maintaining the physical stability of humanin in laboratory settings. Lyophilized humanin should be stored at -20°C or -80°C upon receipt, protected from light and moisture. Prior to opening, vials should be allowed to equilibrate to room temperature to prevent condensation within the container.
Reconstitution should be performed using sterile, bacteriostatic or deionized water, or sterile phosphate-buffered saline (PBS) depending on assay requirements. Due to the hydrophobic nature of certain sequence segments, gentle vortexing or sonication may be applied. Aliquoting reconstituted stock solutions into single-use microcentrifuge tubes is strongly recommended to prevent repeated freeze-thaw cycles, which can induce peptide degradation or irreversible aggregation.
Supply Chain Integrity and Institutional Procurement
PX1 Research serves university laboratories, contract research organizations (CROs), and biotechnology institutions requiring reliable domestic peptide manufacturing. Orders are fulfilled directly from state-of-the-art logistics hubs in California and Arizona, providing fast domestic dispatch (Monday through Friday) without international customs delays or cold-chain interruptions.
For high-throughput screening projects or large-scale preclinical studies requiring multi-gram quantities, PX1 Research provides custom batch production with complete quality documentation. Academic and commercial investigators seeking bulk procurement arrangements can request custom quotes through our wholesale laboratory supply portal.
Frequently Asked Questions
Where is PX1 Research humanin manufactured?
PX1 Research humanin is synthesized entirely in cGMP-compliant facilities within the United States (California and Arizona), ensuring stringent quality control and complete supply chain transparency.
How is the purity of humanin verified?
Every lot undergoes independent third-party verification using High-Performance Liquid Chromatography (HPLC) to establish >98% purity and Mass Spectrometry (MS) to verify exact molecular mass.
Is a Certificate of Analysis (COA) provided with humanin orders?
Yes, every batch of humanin comes with a lot-specific COA issued by an independent ISO 17025-accredited laboratory, detailing HPLC chromatograms, MS spectra, and endotoxin assay results.
What are the endotoxin limits for PX1 Research humanin?
Our humanin is verified to contain low endotoxin levels (<0.1 EU/mg) via LAL assay testing, ensuring suitability for sensitive cell culture and in vitro applications.
How should lyophilized humanin be stored upon arrival?
Lyophilized humanin should be stored at -20°C or -80°C in a dry environment protected from light. Avoid exposing unopened vials to ambient moisture.
What solvent is recommended for reconstituting humanin in vitro?
Sterile laboratory-grade water or sterile PBS (pH 7.4) is typically used for reconstitution. Gentle agitation or brief sonication can assist in full dissolution.
What biological pathways are primary targets of humanin in research?
Humanin acts as an extracellular ligand for the gp130/WSX-1/CNTFRa receptor complex (activating STAT3/MAPK) and binds directly to cytosolic Bax to prevent mitochondrial apoptosis.
How does humanin differ from MOTS-c?
While both are mitochondria-derived peptides, humanin is a 24-amino-acid cytoprotective peptide acting primarily via membrane receptors and Bax binding, whereas MOTS-c is a 16-amino-acid peptide that translocates to the nucleus to regulate metabolic genes.
All products are sold strictly for laboratory and research use only. Not for human or veterinary use, diagnosis, treatment or consumption. Statements have not been evaluated by the FDA.