DIHEXA
DIHEXA (also recognized in pre-clinical literature as PNB-0408 or ATH-1001) is a synthetic, angiotensin IV-derived peptidomimetic compound engineered to investigate pathways regulating synaptic connectivity and neuroplasticity. Structurally optimized to act as a stable, small-molecule functional analog rather than a traditional short-lived oligopeptide, DIHEXA exhibits an exceptionally high binding affinity to pathways linked with target synapse formation and cellular communication. Within advanced laboratory models, this compound serves as a critical reference ligand for mapping the structural mechanics of growth-factor-mediated signaling cascades and cellular resilience markers under controlled in vitro configurations.
Technical Specifications
| Property | Specification |
|---|---|
| Product Name | DIHEXA |
| CAS Number | 1401708-83-5 |
| IUPAC Name | 6-[(2S,3S)-2-[(2S)-2-hexanamido-3-(4-hydroxyphenyl)propanamido]-3-methylpentanamido]hexanamide |
| Molecular Formula | C₂₇H₄₄N₄O₅ |
| Molecular Weight | 504.67 g/mol |
| Chemical Class | Angiotensin IV-Derived Peptidomimetic |
| Assay Purity | Refer to the batch-specific Certificate of Analysis (COA) supplied for the lot received |
| Physical Format | Fine crystalline white powder |
| Solution Base | Deionized Water, DEGEE, DMSO, Ethanol, Menthol, Aloe Barbadensis Leaf Juice, Glycerin, Polysorbate 20, Carbomer, Triethanolamine, Tetrasodium EDTA, Phenoxyethanol, Caprylyl Glycol, Hexylene Glycol, Ethylhexylglycerin |
Research Applications & Mechanism of Interest
In non-clinical research environments, DIHEXA is primarily investigated for its unique capacity to allosterically bind and potentiate the hepatocyte growth factor (HGF) system. By pairing with native HGF, it promotes receptor dimerization and enhances autophosphorylation thresholds of the c-Met receptor tyrosine kinase—a key modulator of structural cellular growth.
Primary fields of exploratory laboratory study include:
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HGF/c-Met Axis Activation Pathways: Mapping downstream cellular events, specifically the recruitment and activation of phosphatidylinositol 3-kinase (PI3K) and protein kinase B (Akt) signaling loops that regulate cellular survival profiles.
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Synaptogenesis & Spinogenesis Dynamics: Utilizing primary hippocampal neuronal cultures to quantify variations in synaptic density, dendritic arborization, and the physical formation of new functional synaptic connections.
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Comparative Neurotrophic Benchmarking: Serving as a high-potency control compound in cellular differentiation assays to track target signaling efficiency alongside endogenous growth factors like Brain-Derived Neurotrophic Factor (BDNF).
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Blood-Brain Barrier Permeability Modeling: Investigating the physicochemical properties of peptide-derived small molecules to understand how modifications to the amino-terminal backbone alter membrane diffusion and structural stability under physiological constraints.
Storage & Handling Guidelines
Store at controlled room temperature. Keep tightly closed. Liquid formats: do not refrigerate or freeze. Cold storage may cause the solution to cloud or precipitate. If this occurs, return to room temperature and mix until clear.
Storage guidance is a house recommendation. Analytical documentation is per-lot release testing.
Related Research Compounds
Frequently Asked Research Questions
Is DIHEXA classified as a standard peptide?
While DIHEXA is structurally derived from core fragments of the native peptide angiotensin IV, its terminal modifications classify it as an organic peptidomimetic or small-molecule analog. This design minimizes rapid enzymatic cleavage by ambient aminopeptidases, delivering significantly enhanced baseline stability during prolonged in vitro tissue testing compared to unaltered natural peptides.
How does DIHEXA alter downstream signaling without direct receptor competition?
Preclinical binding assays indicate that DIHEXA acts as an allosteric enhancer rather than a traditional direct agonist. It binds specifically to the domain of the HGF molecule, stabilizing its active conformation and dramatically amplifying downstream c-Met phosphorylation even when endogenous growth factor levels sit below standard activation thresholds.
Scientific References
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Benoist, C. C., Kawas, L. H., Kuhnot, A. M., Wayman, G. A., & Harding, J. W. (2014). “The procognitive and synaptogenic effects of angiotensin IV-derived peptides are dependent on activation of the hepatocyte growth factor/c-Met system.” Journal of Pharmacology and Experimental Therapeutics, 351(2), 390–402. doi:10.1124/jpet.114.218552.
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Wright, J. W., Kawas, L. H., & Harding, J. W. (2015). “The development of small molecule angiotensin IV analogs as cognitive enhancers.” Progress in Neurobiology, 125, 26–46. doi:10.1016/j.pneurobio.2014.11.004.
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Sun, X., et al. (2021). “AngIV-analog dihexa rescues cognitive impairment and recovers memory in the APP/PS1 mouse via the PI3K/AKT signaling pathway.” Brain Sciences, 11(11), 1487. doi:10.3390/brainsci11111487.
Research Use Only Disclaimer: This compound is developed, synthesized, and distributed strictly as a Research Use Only (RUO) laboratory chemical. It is not an FDA-approved medication, drug formulation, clinical compound, or dietary supplement, and is strictly prohibited for human or veterinary consumption. Kimera Chems provides these reference materials exclusively to qualified institutional laboratories and certified scientific investigators for use within controlled in vitro and preclinical research frameworks.
