Vesilut Peptide: Potential Interactions with Cells’ Genetic Expression and Cellular Aging

Vesilut, also referred to as Vesilute, is a very short peptide made of two amino acids – glutamic acid and aspartic acid. Therefore, it may also be defined as glutamic-aspartic acid, glutamyl-aspartate, or ED. It is posited to be a gene modulator (aka detomidine) and a member of the family of Khavinson’s peptides. Specifically, Khavinson et al. suggests that the peptide may have a specific affinity to parts of the DNA, such as the ATTT sequence, which is one Adenine and three Thymine nucleotides.⁽¹⁾ Vesilut peptide is posited to possibly interact with gene expression in tissues and cells related to the urinary bladder.

Fig1 – Vesulit Chemical Structure⁽²⁾

Vesilut Peptide and Gene Expression

The data on the interactions of Vasilut with different genes is scarce. That said, studies by Khavinson et al. with similar peptides that contain the ED sequence suggest that these peptides may interact with chromatin structures in the cellular nucleus and potentially activate different genes. As a reference, chromatin is a complex of DNA and proteins, primarily histones, that packages the long DNA strands into a more compact, dense shape within the nucleus. This packaging is essential for DNA stability and regulation of gene expression.

Tightly packed chromatin, referred to as heterochromatin, is generally associated with gene silencing because the DNA is less accessible to the cellular machinery that reads and expresses genes. In contrast, loosely packed chromatin, called euchromatin, is associated with active gene expression. Specifically, Khavinson et al. suggested that “short peptides activate heterochromatin and heterochromatinized regions of cell chromosomes.” Indeed, peptides similar to Vesilut are hypothesized to modify chromatin structure within aging cells.⁽³⁾ This modification may induce chromatin decondensation, contrasting with the condensed form typically linked to decreased gene activity. By promoting decondensation, these bioregulator peptides might reactivate genes that have been deactivated over time due to cellular aging. This reactivation may support protein synthesis and potentially mitigate certain actions of cellular aging in various cell types, including urinary bladder cells.

It is also possible that Vesilut peptide influences chromosome dynamics by increasing the rate of sister chromatid exchanges (SCEs). SCEs are endogenous processes during cell division where identical sister chromatids (replicated forms of a chromosome) may exchange segments of genetic material. Studies such as one experiment by Dzhokhadze et al. posit that an increased frequency of these exchanges might indicate that small peptides like Vesilut may support chromosomal repair and maintenance mechanisms, potentially aiding genomic stability in the process of cellular aging.⁽⁴⁾ Furthermore, similar bioregulatory peptides may affect the activity of ribosomal RNA (rRNA) genes, as suggested by an observed increase in silver-stained nucleolus organizer regions (Ag-NORs).

Nucleolus organizer regions (NORs) are specific chromosomal sites essential for the formation of ribosomes, the cellular machinery responsible for protein synthesis. An elevated number of silver-stained (Ag-positive) NORs might imply better-supported production of rRNA, leading to a greater number of ribosomes and an increased capacity for protein synthesis. This potential impact might be particularly significant in cells experiencing cellular aging, where the ability to synthesize proteins often declines.

Vesilut Peptide and Urinary Bladder Cells

Research by Borovskaya et al. suggests that bioregulatory peptides with sequences similar to Vesilut (Glu-Asp), such as another peptide called Prostamax, may exhibit intriguing mechanisms of action, especially in experimental models of chronic aseptic inflammation. ⁽⁵⁾ It is hypothesized that Vesilut operates similarly to these related bioregulators, focusing on modulating key indicators of chronic inflammation at the cellular level. One primary potential observed in trials was a reduction of swelling in the inflamed cell cultures from the urinary tract.⁽⁵⁾ This may be achieved by influencing fluid dynamics and cellular responses within the tissue, resulting in decreased edema.

Another potential mechanism of Vesilut peptide, based on data from related bioregulators, is the reduction of hyperemia—an excess of blood in the vessels supplying the prostate gland. This regulation of blood flow may be due to the bioregulator’s influence on vascular endothelium and smooth muscle cells, leading to normalization of blood supply and alleviation of the hyperemic state. Additionally, bioregulators related to Vesilut peptide appear to modulate cellular infiltration, an indicator of immune response and inflammation.

By potentially regulating the migration and activity of immune cells, these citomedines may help maintain a balanced inflammatory response, mitigating excessive cellular infiltration. A significant aspect of these peptides is their potential to inhibit the development of sclerotic processes. Such changes in tissues might greatly impact normal functions. Citomedines may intervene in pathways leading to the accumulation of fibrous tissue, thereby mitigating the progression from chronic inflammation to complete dysfunction.

 
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References:

1. Khavinson, V. K., Lin’kova, N. S., & Tarnovskaya, S. I. (2016). Short peptides regulate gene expression. Bulletin of experimental biology and medicine, 162(2), 288-292.
2. National Center for Biotechnology Information (2024). PubChem Compound Summary for CID 6994996, Glutamyl-Aspartate. Retrieved October 9, 2024 from https://pubchem.ncbi.nlm.nih.gov/compound/Glutamyl-Aspartate.
3. Khavinson VKh, Lezhava TA, Malinin VV. Effects of short peptides on lymphocyte chromatin in senile subjects. Bull Exp Biol Med. 2004 Jan;137(1):78-81. doi: 10.1023/b:bebm.0000024393.40560.05. PMID: 15085253.
4. Dzhokhadze TA, Buadze TZh, Gaĭozishvili MN, Baratashvili NA, Lezhava TA. [Deheterochromatinization of the chromatin in old age induced by oligopeptide bioregulator (Lys-Glu-Asp-Pro)]. Georgian Med News. 2012 Nov;(212):76-82. Russian. PMID: 23221144.
5. Borovskaya, T. G., Pakhomova, A. V., Vychuzhanina, A. V., Poluektova, M. E., Fomina, T. I., Ermolaeva, L. A., … & Neplochov, E. A. (2013). Experimental studying of the drug efficiency Prostamax in the therapy of chronic aseptic prostatitis and its complications. Modern Research in Inflammation, 2013.