Cortagen is a synthetic short-chain bioregulator tetrapeptide widely investigated in neurobiology for its capacity to influence central gene expression and neuronal signaling pathways. Researchers seeking to buy neurotransmitter system modulation Cortagen for sale can rely on PX1 Research for analytically verified, high-purity compounds manufactured under strict quality standards for laboratory research use only.
Cortagen is a synthetic short-chain bioregulator tetrapeptide widely investigated in neurobiology for its capacity to influence central gene expression and neuronal signaling pathways. Researchers seeking to buy neurotransmitter system modulation Cortagen for sale can rely on PX1 Research for analytically verified, high-purity compounds manufactured under strict quality standards for laboratory research use only.
Investigators looking to buy neurotransmitter system modulation Cortagen for sale in laboratory settings require high-purity, analytical-grade material validated via HPLC and mass spectrometry. Cortagen (Ala-Glu-Asp-Pro) is a synthetic bioregulator tetrapeptide evaluated in preclinical neurobiology for its potential to modulate gene expression, neurotrophic factor expression, and neurotransmitter signaling pathways.
PX1 Research supplies research-grade Cortagen exclusively for in vitro and preclinical experimental protocols. Every lot undergoes rigorous testing at ISO 17025 accredited partner laboratories, ensuring researchers receive precise, batch-consistent materials supported by a complete Certificate of Analysis (COA). Institutional buyers can browse our comprehensive all-peptides catalog or register for wholesale lab procurement to support ongoing analytical studies.
Cortagen is a synthetic tetrapeptide defined by the primary amino acid sequence L-Alanyl-L-glutamyl-L-aspartyl-L-proline (Ala-Glu-Asp-Pro, or AEDP). Derived structurally from lower-molecular-weight fractions of brain-cortex peptide complexes, Cortagen represents a refined class of short peptide bioregulators engineered to possess high stability and targeted biological reactivity in neural tissues.
With a chemical formula of C17H26N4O9 and a molecular mass of approximately 430.41 g/mol, Cortagen exhibits strong hydrophilic characteristics, allowing rapid solubilization in aqueous laboratory buffers. Preclinical structural analysis reveals that the specific arrangement of charged amino acid residues (glutamic acid and aspartic acid) coupled with proline facilitates conformational interactions with nuclear chromatin and cellular receptor sites, distinguishing it within the broader research library of neuroactive compounds.
The primary focus of preclinical inquiry into Cortagen centers on its regulatory influence over central nervous system signaling cascades. Research models demonstrate that short peptides like AEDP cross cellular membranes and penetrate nuclear structures, where they interact directly with specific histone proteins and DNA promoter regions. This epigenetic mechanism is thought to modulate transcription rates of key neuronal enzymes and structural proteins involved in neurotransmission.
In vitro assays examining cortical neuronal cultures indicate that exposure to Cortagen alters expression patterns of genes governing glutamatergic and GABAergic receptor subunits. By modulating the equilibrium between excitatory glutamatergic signaling and inhibitory GABAergic tone, Cortagen provides a valuable model for investigating neurochemical homeostasis during simulated ischemic or toxic challenges. Preclinical studies suggest that this homeostatic control helps preserve synaptic plasticity and dendritic spine density under elevated stress conditions.
Published preclinical literature highlights the neuroprotective and neuroregenerative potential of Cortagen across various animal models. In rodent studies investigating traumatic brain injury and focal cerebral ischemia, administration of research-grade AEDP was correlated with a reduction in necrotic brain lesion volume, attenuated microglial activation, and decreased local inflammatory cytokine transcription (including TNF-alpha and IL-1 beta).
Additionally, rodent models of peripheral nerve injury demonstrate that Cortagen accelerates functional nerve regeneration by upregulating brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF) mRNA expression. These findings suggest that the compound does not act merely as a classical neurotransmitter receptor agonist or antagonist, but rather as an upstream genomic modifier capable of orchestrating complex cellular repair programs. Investigators can inspect the specific analytical specifications for this peptide on the official Cortagen product page.
To properly contextualize Cortagen within neurobiology research, it is essential to compare its structural and functional profile against related bioregulator peptides and neuroactive compounds. Below is a comparative overview of key peptides evaluated in central nervous system research models.
While Pinealon is a tripeptide (Glu-Asp-Arg) primarily studied for its circadian rhythm and cellular anti-aging effects in brain tissue, Cortagen (AEDP) exhibits a higher specificity for cortical tissue remodeling and inflammatory cytokine modulation. In contrast, Epitalon targets telomerase activation and pineal gland regulation, and non-bioregulator peptides such as Semax operate via direct melanocortin receptor activation and rapid BDNF release. Understanding these mechanistic differences allows researchers to select the precise peptide candidate for their targeted bioassays.
When purchasing compounds for quantitative cellular assays, reagent purity is critical to preventing confounding experimental outcomes. Low-grade synthesis impurities, such as truncated peptide sequences or residual TFA (trifluoroacetic acid) salts, can introduce cellular toxicity or skew enzymatic kinetic readouts.
PX1 Research ensures that every batch of Cortagen undergoes rigorous dual-stage analytical testing. Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) is utilized to confirm chromatographic purity exceeding 98%, while Matrix-Assisted Laser Desorption/Ionization Time-of-Flight (MALDI-TOF) or Electrospray Ionization Mass Spectrometry (ESI-MS) confirms exact molecular mass identity. Every shipment includes lot-specific documentation verifying these metrics.
Bacterial endotoxins (lipopolysaccharides, LPS) represent a major contamination threat in neurobiological research. Exposure of primary microglial or neuronal cultures to even trace levels of endotoxin can trigger non-specific inflammatory signaling pathways, masking the true experimental biological activity of the compound under study.
To maintain assay integrity, PX1 Research subjects all lot batches to Chromogenic Recombinant Factor C (rFC) or Limulus Amebocyte Lysate (LAL) endotoxin testing. Our research-grade Cortagen is guaranteed to meet stringent endotoxin thresholds (<0.01 EU/µg), ensuring high safety and compatibility for delicate in vitro assays, organotypic slice cultures, and sensitive biochemical assays.
Proper handling and storage are vital to maintaining the structural integrity of lyophilized Cortagen. Upon receipt, lyophilized peptide vials should be stored at -20°C or -80°C in a desiccated environment to prevent atmospheric moisture absorption and hydrolytic degradation.
For reconstitution in laboratory environments, follow these standardized steps:
1. Allow the vial to equilibrate to room temperature before opening to minimize condensation formation inside the container. 2. Reconstitute using sterile Bacteriostatic Water, Sterile Water for Injection (WFI), or phosphate-buffered saline (PBS, pH 7.4) depending on the requirements of the downstream assay. 3. Gently swirl or invert the vial until the lyophilized cake is fully dissolved. Avoid vigorous vortexing or sonic agitation, which can induce physical shear forces and protein aggregation. 4. Aliquot the reconstituted solution into single-use polypropylene microtubes to avoid repeated freeze-thaw cycles. 5. Store working aliquots at -20°C for short-term use (up to 30 days) or -80°C for long-term storage.
For additional guidance on calculating working concentrations for cell culture media, refer to our technical peptide reconstitution guide.
PX1 Research operates as a trusted USA-based supplier dedicated exclusively to serving academic institutions, biotechnology firms, and contract research organizations (CROs). We synthesize all compounds in state-of-the-art, GMP-compliant facilities utilizing solid-phase peptide synthesis (SPPS) chemistry.
Orders placed Monday through Friday are dispatched same-day from our distribution hubs in California and Arizona, minimizing transit times and cold-chain disruption risks. Institutional purchasing departments requiring custom synthesis scales, bulk pricing, or specialized documentation can submit inquiries directly through our wholesale laboratory portal.
What is the sequence and molecular weight of Cortagen?
Cortagen is a synthetic tetrapeptide with the amino acid sequence L-Alanyl-L-glutamyl-L-aspartyl-L-proline (Ala-Glu-Asp-Pro / AEDP). It has a molecular weight of approximately 430.41 g/mol.
How does Cortagen differ from Pinealon in laboratory models?
While both are synthetic short-chain bioregulators targeting neural tissue, Cortagen is a tetrapeptide (AEDP) focused on cortical tissue gene expression, cytokine regulation, and neurotransmitter balance. Pinealon is a tripeptide (Glu-Asp-Arg) primarily evaluated for circadian rhythm modulation and reactive oxygen species reduction.
How is the purity of PX1 Research Cortagen verified?
Every lot of Cortagen undergoes third-party verification using Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) to confirm >98% purity, alongside Mass Spectrometry (MS) to verify exact molecular mass. A lot-specific Certificate of Analysis (COA) is provided.
What endotoxin controls are applied to Cortagen batches?
Cortagen lots are tested for bacterial endotoxins via LAL or rFC assays to ensure levels remain below strictly defined limits (<0.01 EU/µg), preventing unwanted microglial activation during in vitro cell culture studies.
What is the recommended solvent for reconstituting Cortagen for in vitro assays?
Cortagen readily dissolves in sterile WFI, Bacteriostatic Water, or standard laboratory buffers such as Phosphate-Buffered Saline (PBS, pH 7.4). Solvents should be selected based on the specific toxicity tolerance of the target cell assay.
Can Cortagen be subjected to multiple freeze-thaw cycles?
No. Repeated freeze-thaw cycles can degrade peptide bonds and induce aggregation. After initial reconstitution, the solution should be divided into single-use aliquots and stored at -20°C or -80°C.
Is Cortagen supplied by PX1 Research intended for human consumption?
No. All products supplied by PX1 Research, including Cortagen, are strictly intended for laboratory research, in vitro assays, and preclinical animal models. They are not for medical, clinical, therapeutic, or diagnostic use.
Where does PX1 Research ship Cortagen from?
PX1 Research manufactures its compounds in the USA and dispatches orders same-day (Monday–Friday) from centralized fulfillment centers located in California and Arizona.
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.