Vilon is the synthetic dipeptide with the amino acid sequence Lys-Glu (KE). Its molecular weight is 275.3 Da, and its CAS number is 45234-02-4.
Vilon, the synthetic dipeptide Lys-Glu (KE), is a short-chain cytogen studied as a tissue-specific bioregulator with pronounced affinity for cells associated with immune-system signaling, including thymocytes, T-lymphocytes, and other immunocompetent cells, as well as retinal and neuronal tissues. Its exceptionally small size (molecular weight 275.3 Da) enables it to readily cross cellular membranes, penetrate the nucleus without requiring receptor-mediated endocytosis or classical surface signaling pathways, and exert direct effects on nuclear components. Once inside the cell, KE localizes primarily to the nucleoplasm and nucleolus, where it modulates gene expression through direct interaction with DNA and chromatin structures rather than through conventional second-messenger systems.
The core molecular mechanism of Vilon involves sequence-specific binding to double-stranded DNA. Biophysical studies have identified a preferred high-affinity binding motif for the KE dipeptide: the tetranucleotide TCGA sequence located in the promoter regions of genes critical for immune signaling, cell proliferation, cytoskeleton dynamics, and metabolic regulation. Binding occurs preferentially in GC-rich regions and leads to local destabilization of the DNA double helix. This interaction sterically hinders repressive chromatin complexes and may reduce inhibitory methylation activity, thereby maintaining promoters in a transcriptionally active, euchromatic state.
In addition to direct DNA interaction, Vilon modulates chromatin architecture by promoting deheterochromatinization. The dipeptide induces conformational changes that increase the proportion of transcriptionally active euchromatin while reducing condensed heterochromatin, particularly in aging lymphocyte models. This epigenetic remodeling reactivates genes progressively downregulated during biological aging, significantly enhancing accessibility of transcription factors to target promoters without altering the underlying DNA sequence. This process represents a classic example of epigenetic regulation, allowing Vilon to influence youthful patterns of gene expression in senescent cellular systems.
Key target genes regulated by KE binding in their promoter regions include those involved in:
• Interleukin-2 (IL-2) expression — associated with T-cell proliferation and immune signaling activity;
• EPS15, MCM10 homologue, Cullin 5, APG5L, and related proliferation and DNA-replication genes — supporting cell-cycle progression and reparative cellular processes;
• Cytoskeletal and metabolic genes (ITPK1, SLC7A6, and others) — coordinating cytoskeletal integrity, intracellular transport, and energy homeostasis;
• Antioxidant and anti-apoptotic pathways — contributing to cellular resilience under stress conditions.
Furthermore, Vilon upregulates neurotrophic and regenerative factors in retinal and neuronal experimental models, promoting differentiation and resilience of specialized cells.
Under conditions of oxidative or immune-related stress (such as aging-related thymic involution, radiation exposure, or inflammatory challenge models), Vilon finely modulates proliferative and reparative signaling. It accelerates the transition of immune-associated cells into active proliferative phases while modulating excessive apoptotic activity. This temporal regulation is associated with restoration of immune signaling competence and reduction of premature cellular senescence pathways. Simultaneously, Vilon shifts intracellular balance toward survival-associated signaling, repair-associated pathways, and functional cellular maintenance.
At the mitochondrial and metabolic level, Vilon supports energy production and cellular homeostasis. By modulating genes linked to metabolism and reducing oxidative burden, it enhances mitochondrial efficiency and contributes to improved glucose and lipid metabolism pathways. These actions are also studied in relation to inflammation-associated metabolic signaling disturbances.
Vilon demonstrates strong tissue specificity toward immune and regenerative tissues (thymus, lymphocytes, retina, and select neuronal populations), showing minimal activity in unrelated cell types due to the selective distribution of its DNA-binding motifs and chromatin partners.
Biophysical studies suggest that Vilon may also interact with nuclear ribonucleoprotein complexes, stabilizing mRNA transcripts of the upregulated genes and improving translational efficiency. This multi-level regulation — encompassing direct DNA binding, chromatin deheterochromatinization, proliferation support, antioxidant enhancement, and post-transcriptional stabilization — creates a comprehensive molecular program associated with immune signaling modulation, cellular resilience, and adaptive regenerative capacity.
In experimental and research settings, Vilon is studied in relation to immunomodulatory signaling, chromatin remodeling, reparative cellular pathways, and metabolic regulation systems associated with immune resilience and adaptive capacity.
Research models have explored associations with:
• T-cell signaling pathways and cytokine-related communication systems;
• restoration of cellular immune signaling balance in aging-associated and stress-related models;
• oxidative stress adaptation and inflammatory signaling regulation;
• thymic cellular activity and immune-associated proliferative pathways;
• retinal and neuronal resilience-associated signaling systems.
The peptide is frequently examined in experimental models involving age-associated immune signaling decline, cellular stress adaptation, radiation-associated stress environments, inflammatory challenge systems, and broader proliferative regulation pathways.
Vilon also demonstrates strong anti-stress and adaptive signaling effects at the systemic level in experimental models. By modulating thymic cellular activity and cytokine-associated pathways, it is studied for its role in psychoemotional, oxidative, and inflammatory stress-associated signaling systems. Experimental observations have associated these interactions with improved cellular resilience, adaptive signaling capacity, and broader systemic homeostasis under prolonged stress conditions.
A notable area of investigation involves age-associated biological signaling processes. Experimental findings suggest that Vilon influences chromatin remodeling, mitochondrial regulation, oxidative stress adaptation, and reparative signaling pathways associated with biological aging models. In aging-associated experimental systems, these interactions are studied in relation to immune signaling decline, reduced regenerative signaling capacity, and metabolic adaptation changes.
Additional experimental observations include associations with reparative signaling pathways, inflammatory modulation, tissue-associated recovery systems, and cellular resilience mechanisms in post-stress biological models. Studies in experimental systems have also explored the peptide’s interaction with proliferative regulation pathways and long-term cellular adaptation mechanisms.
Through modulation of metabolic and proliferation-related genes, along with reduction of chronic inflammatory and oxidative signaling burden, Vilon is studied for its supportive effects on systemic glucose homeostasis and cellular metabolic regulation.
By influencing oxidative stress pathways and inflammation-associated metabolic disturbances, it may contribute to improved cellular responsiveness to metabolic signaling systems and support broader glucose and lipid metabolism pathways in experimental models.
In experimental metabolic and aging-associated signaling models, Vilon has been associated with normalization of metabolic signaling markers and improved mitochondrial adaptation under conditions of chronic cellular stress and immune-system dysregulation.
These interactions complement its broader roles in immune-associated signaling, chromatin remodeling, mitochondrial regulation, and adaptive cellular resilience pathways, particularly in models involving age-associated metabolic imbalance and inflammatory signaling dysregulation.
Vilon is characterized in experimental literature by strong tolerability and selective biological activity, with minimal adverse observations other than rare hypersensitivity-associated responses reported in research settings. These observed effects are associated with modulation of gene expression, chromatin remodeling, immune-associated signaling pathways, anti-apoptotic regulation, mitochondrial adaptation, and metabolic homeostasis systems.
As a research peptide and short-chain bioregulator, Vilon continues to be explored in experimental models focused on immune signaling, stress adaptation, chromatin regulation, healthy cellular aging processes, mitochondrial biology, and metabolic pathway coordination.
Learn how immune bioregulator peptides are researched for cellular resilience, immune signaling, and healthy aging pathways.
→ What Are Bioregulator Peptides?
All information presented is based on experimental and preclinical research data and is intended for scientific and educational purposes only.
In vitro research or further manufacturing use only. Not for human or animal use.
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