Exploring the cytotoxic mechanisms of Pediocin PA-1 towards HeLa and HT29 cells by comparison to known bacteriocins: Microcin E492, enterocin heterodimer and Divercin V41.
Journal article
Buss, G. and Wilson, C. 2021. Exploring the cytotoxic mechanisms of Pediocin PA-1 towards HeLa and HT29 cells by comparison to known bacteriocins: Microcin E492, enterocin heterodimer and Divercin V41. PLoS ONE. 16 (9), p. e0251951. https://doi.org/10.1371/journal.pone.0251951
Authors | Buss, G. and Wilson, C. |
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Abstract | The purpose of this study was to explore potential mechanisms of cytotoxicity towards HeLa and HT29 cells displayed by Pediocin PA-1. We did this by carrying out sequence alignments and 3D modelling of related bacteriocins which have been studied in greater detail: Microcin E492, Enterocin AB heterodimer and Divercin V41. Microcin E492 interacts with Toll-Like Receptor 4 in order to activate an apoptosis reaction, sequence alignment showed a high homology between Pediocin PA-1 and Microcin E492 whereas 3D modelling showed Pediocin PA-1 interacting with TLR-4 in a way reminiscent of Microcin E492. Furthermore, Pediocin PA-1 had the highest homology with the Enterocin heterodimer, particularly chain A; Enterocin has also shown to cause an apoptotic response in cancer cells. Based on this we are led to strongly believe Pediocin PA-1 interacts with TLRs in order to cause cell death. If this is the case, it would explain the difference in cytotoxicity towards HeLa over HT29 cells, due to difference in expression of particular TLRs. Overall, we believe Pediocin PA-1 exhibits a dual effect which is dose dependant, like that of Microcin. Unfortunately, due to the COVID-19 pandemic, we were unable to carry out experiments in the lab, and the unavailability of important data meant we were unable to provide and validate out solid conclusions, but rather suggestions. However, bioinformatic analysis is still able to provide information regarding structure and sequence analysis to draw plausible and evidence based conclusions. We have been able to highlight interesting findings and how these could be translated into future research and therapeutics in order to improve the quality of treatment and life of cancer patients. |
Keywords | Hela Cells; HT29 Cells; Humans; Bacteriocins; Anti-Bacterial Agents; Apoptosis; Cell Survival; Amino Acid Sequence; Protein Conformation; Sequence Homology, Amino Acid; Models, Molecular; Toll-Like Receptor 4; Pandemics; Bridged-Ring Compounds; Pediocins; COVID-19; SARS-CoV-2 |
Year | 2021 |
Journal | PLoS ONE |
Journal citation | 16 (9), p. e0251951 |
Publisher | Cold Spring Harbor Laboratory |
ISSN | 1932-6203 |
Digital Object Identifier (DOI) | https://doi.org/10.1371/journal.pone.0251951 |
Official URL | https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0251951 |
Publication dates | |
Online | 02 Sep 2021 |
01 Jan 2021 | |
Publication process dates | |
Deposited | 09 Aug 2021 |
Output status | Published |
Additional information | Publications router: Date 2021-09-02 of type 'publication_date' with format 'electronic' included in notification |
Publications router: License for this article: cc by included in notification | |
License | CC BY |
File | pone.0251951.pdf |
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