N-Acetyl Epithalon is an N-terminally modified tetrapeptide designed to evaluate bioregulatory dynamics, telomerase activity, and cellular senescence in preclinical research. As an acetylated derivative of Epitalon, this compound provides researchers with an optimized tool for investigating epigenetics, circadian rhythm gene expression, and DNA preservation mechanisms.
N-Acetyl Epithalon is an N-terminally modified tetrapeptide designed to evaluate bioregulatory dynamics, telomerase activity, and cellular senescence in preclinical research. As an acetylated derivative of Epitalon, this compound provides researchers with an optimized tool for investigating epigenetics, circadian rhythm gene expression, and DNA preservation mechanisms.
N-Acetyl Epithalon is a synthetic, N-terminally acetylated tetrapeptide (N-Acetyl-Ala-Glu-Asp-Gly) derived from the canonical bioregulator peptide Epitalon. Developed primarily for in vitro and preclinical research applications, the addition of an acetyl group to the N-terminus alters the molecular polarity and increases resistance to enzymatic degradation by exopeptidases.
Classified strictly as a research compound, n-acetyl epithalon is utilized by molecular biologists and biogerontologists to study nuclear chromatin structure, hTERT gene activation, telomere length dynamics, and neuroendocrine signaling without the confounders introduced by rapid peptide cleavage in cell culture media or tissue samples.
At the structural level, N-Acetyl Epithalon comprises four amino acid residues—alanine, glutamic acid, aspartic acid, and glycine—with an acetyl group covalently bound to the alpha-amino group of the N-terminal alanine residue. This acetyl modification shields the N-terminus from ubiquitous aminopeptidase enzymes present in biological media and plasma preparations.
In physiological buffers, unmodified short peptides often exhibit half-lives measured in minutes due to rapid exopeptidase cleavage. By capping the N-terminus, N-Acetyl Epithalon retains structural integrity over longer incubation periods, facilitating sustained target receptor or chromatin interactions in extended cell culture assays. Researchers investigating long-term gene expression assays often select acetylated variants to maintain stable peptide exposure levels across longitudinal experimental timeframes.
The primary locus of investigation for N-Acetyl Epithalon centers on its interaction with cellular aging pathways, specifically the expression of human telomerase reverse transcriptase (hTERT). In vitro models using human somatic cells indicate that short bioregulatory peptides can cross the nuclear membrane, bind directly to specific histone proteins and DNA promoter regions, and stimulate telomerase gene expression.
Preclinical studies suggest that telomerase reactivation induces the synthesis of telomeric repeats (TTAGGG) at the terminal ends of eukaryotic chromosomes. By stabilizing chromatin architecture and promoting telomere maintenance, n-acetyl epithalon serves as an essential probe for investigating how peptide-DNA interactions offset replicative senescence, diminish DNA damage response (DDR) signaling, and preserve cellular proliferation capacity in cultured fibroblast and endothelial models. Learn more about structural variations in our Epitalon telomere research guide.
Beyond chromosomal maintenance, bioregulatory tetrapeptides original to pineal gland research demonstrate significant regulatory effects on neuroendocrine axes. In vitro and animal models show that pineal-derived peptides modulate melatonin synthesis by regulating the transcription of arylalkylamine N-acetyltransferase (AANAT)—the rate-limiting enzyme in melatonin biosynthesis.
Research in aging rodent models demonstrates that administration of pineal bioregulators restores nocturnal melatonin peaks, normalizes gonadotropin secretion, and re-establishes circadian gene expression profiles (such as CLOCK and BMAL1). Investigating N-Acetyl Epithalon within pinealocyte culture systems allows scientists to map the precise transcriptional cascades responsible for pineal re-sensitization and endocrine rhythm synchronization.
Within the broader class of short bioregulatory peptides, N-Acetyl Epithalon occupies a distinct analytical niche alongside its parent molecule Epitalon and related organ-specific compounds such as Thymalin. While parent Epitalon provides a classical baseline for short-chain pineal peptides, the N-acetylated variant offers enhanced biochemical stability in peptidase-rich in vitro environments. Conversely, Thymalin represents a crude or purified thymic peptide complex focused primarily on T-cell differentiation and immune signaling assays rather than direct telomerase modulation.
When designing comparative longevity and cellular aging assays, researchers frequently contrast N-Acetyl Epithalon against unmodified short peptides and other N-terminally modified signaling molecules like N-Acetyl Semax to isolate how N-capping influences cellular uptake, nuclear translocation efficiency, and enzymatic breakdown rates. Further comparative analyses across different peptide families can be reviewed in our comprehensive bioregulator peptides overview.
To establish robust in vitro data when studying N-Acetyl Epithalon, laboratory protocols must control for peptide concentration, cell passaging limits, and incubation duration. Standard experimental models employ human diploid fibroblasts (e.g., WI-38 or IMP-90 cell lines) approaching their Hayflick limit to measure changes in senescence-associated beta-galactosidase (SA-beta-Gal) activity post-treatment.
Telomerase activity is routinely quantified using the Telomeric Repeat Amplification Protocol (TRAP) assay or quantitative real-time PCR (qRT-PCR) targeting hTERT mRNA transcripts. Researchers should ensure that solvent controls match the final vehicle composition (e.g., sterile phosphate-buffered saline) to isolate the peptide's true epigenomic effects from background vehicle artifacts.
N-Acetyl Epithalon is supplied as a lyophilized (freeze-dried) powder to maximize shelf stability. For laboratory evaluation, the cake must be reconstituted using sterile, laboratory-grade diluents such as bacteriostatic water or sterile normal saline (0.9% sodium chloride).
When reconstituting, researchers should introduce the diluent along the inner vial wall to prevent excessive foaming, followed by gentle swirling without vigorous vortexing. For specific molarity calculations and dilution matrices, consult our interactive peptide reconstitution calculator. Reconstituted solutions should be divided into single-use experimental aliquots and stored at -20°C or -80°C to minimize freeze-thaw degradation, whereas unopened lyophilized vials remain stable at freezer temperatures long-term.
Precision in peptide research requires absolute certainty regarding compound purity, molecular weight, and freedom from contaminants. PX1 Research subjects every lot of n-acetyl epithalon to stringent analytical verification performed by independent, ISO 17025 accredited laboratories.
Quality assurance documentation includes high-performance liquid chromatography (RP-HPLC) chromatograms confirming peptide purity exceeding 98.0%, alongside electrospray ionization mass spectrometry (ESI-MS) spectra verifying the exact molecular mass (MW 431.4 g/mol). Additionally, rigorous chromogenic LAL assays verify that endotoxin levels remain strictly below <0.5 EU/mg, preventing confounding inflammatory responses in cell culture lines.
PX1 Research serves as a trusted primary supplier of high-purity research peptides for academic, biotechnology, and institutional laboratories across North America. All compounds are manufactured in state-of-the-art, GMP-compliant facilities within the USA, ensuring total batch-to-batch consistency and full supply chain traceability.
Orders are fulfilled directly from our centralized distribution facilities in California and Arizona, offering same-day dispatch for orders placed before standard cutoff times (Monday through Friday). Principal investigators requiring large-scale batch lots for multi-phase laboratory studies can apply for specialized institutional pricing through our dedicated wholesale laboratory program. Browse our complete catalog of analytical-grade compounds via our main peptide research library.
What is N-Acetyl Epithalon?
N-Acetyl Epithalon is a synthetic four-amino-acid peptide (N-Acetyl-Ala-Glu-Asp-Gly) created by modifying Epitalon with an N-terminal acetyl group to increase enzymatic resistance during preclinical research.
How does the N-acetyl group modify Epitalon functionality?
The addition of the N-acetyl group shields the peptide's terminal amino acid from exopeptidase cleavage, thereby extending its half-life and stability in cell culture media and biochemical assays.
What primary research areas involve N-Acetyl Epithalon?
It is primarily studied in preclinical laboratory models investigating telomerase activation (hTERT expression), telomere extension, chromatin structure remodeling, cellular senescence, and pineal gland circadian regulation.
Is N-Acetyl Epithalon approved for human consumption or clinical therapy?
No. N-Acetyl Epithalon is strictly a research chemical designated exclusively for in vitro and laboratory evaluation. It is not intended for human or veterinary use, diagnosis, treatment, or therapy.
What diluent should be used to reconstitute N-Acetyl Epithalon for lab assays?
Lyophilized N-Acetyl Epithalon is typically reconstituted using laboratory-grade bacteriostatic water or sterile 0.9% sodium chloride injection solution under aseptic conditions.
How should reconstituted N-Acetyl Epithalon aliquots be stored?
Reconstituted solutions should be divided into sterile, single-use aliquots and stored at -20°C or -80°C to preserve structural integrity and prevent degradation from repeated freeze-thaw cycles.
What quality metrics are provided on the PX1 Certificate of Analysis (COA)?
Each lot COA provides empirical data verifying purity (via RP-HPLC), exact identity and mass confirmation (via ESI-MS), and endotoxin quantification (via chromogenic LAL testing, strictly <0.5 EU/mg).
Where is PX1 Research N-Acetyl Epithalon manufactured and shipped from?
All PX1 Research compounds are manufactured in USA-based GMP-compliant facilities and shipped directly from our warehouse hubs in California and Arizona with same-day shipping on weekdays.
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.