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Alternative use of Bacillus subtilis spores : Protection against environmental oxidative stress in human normal keratinocytes

Petruk, Ganna LU orcid ; Donadio, Giuliana ; Lanzilli, Mariamichela ; Isticato, Rachele and Monti, Daria Maria (2018) In Scientific Reports 8(1).
Abstract

Inorganic trivalent arsenic is a major environmental pollutant and exposure to human results in many pathologies, including keratosis and carcinoma. Here, we analyzed the effects of B. subtilis spores on human normal keratinocytes in the presence of sodium arsenite oxidative stress. Pre-Treatment of cells with spores before inducing oxidative stress was able to keep normal levels of intracellular ROS, GSH and lipid peroxidation, as well as to inhibit the activation of the MAPK cascade. Moreover, spores showed a positive effect on cell proliferation, probably due to their binding on the cell surface and the activation of intracellular catalases. We found that spores exert their protective effect by the nuclear translocation of Nrf-2,... (More)

Inorganic trivalent arsenic is a major environmental pollutant and exposure to human results in many pathologies, including keratosis and carcinoma. Here, we analyzed the effects of B. subtilis spores on human normal keratinocytes in the presence of sodium arsenite oxidative stress. Pre-Treatment of cells with spores before inducing oxidative stress was able to keep normal levels of intracellular ROS, GSH and lipid peroxidation, as well as to inhibit the activation of the MAPK cascade. Moreover, spores showed a positive effect on cell proliferation, probably due to their binding on the cell surface and the activation of intracellular catalases. We found that spores exert their protective effect by the nuclear translocation of Nrf-2, involved in the activation of stress response genes. This, in turn, resulted in a protective effect against sodium arsenite stress injury, as oxidative stress markers were reported to physiological levels when cells were stressed before incubating them with spores. Therefore, B. subtilis spores can be considered as a new agent to counteract oxidative stress on normal human keratinocytes.

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author
; ; ; and
publishing date
type
Contribution to journal
publication status
published
in
Scientific Reports
volume
8
issue
1
article number
1745
publisher
Nature Publishing Group
external identifiers
  • scopus:85041168000
  • pmid:29379084
ISSN
2045-2322
DOI
10.1038/s41598-018-20153-2
language
English
LU publication?
no
additional info
Publisher Copyright: © The Author(s) 2018.
id
610d59db-d8f1-4564-a4fd-7a872859e567
date added to LUP
2025-01-21 15:41:45
date last changed
2025-07-09 16:32:01
@article{610d59db-d8f1-4564-a4fd-7a872859e567,
  abstract     = {{<p>Inorganic trivalent arsenic is a major environmental pollutant and exposure to human results in many pathologies, including keratosis and carcinoma. Here, we analyzed the effects of B. subtilis spores on human normal keratinocytes in the presence of sodium arsenite oxidative stress. Pre-Treatment of cells with spores before inducing oxidative stress was able to keep normal levels of intracellular ROS, GSH and lipid peroxidation, as well as to inhibit the activation of the MAPK cascade. Moreover, spores showed a positive effect on cell proliferation, probably due to their binding on the cell surface and the activation of intracellular catalases. We found that spores exert their protective effect by the nuclear translocation of Nrf-2, involved in the activation of stress response genes. This, in turn, resulted in a protective effect against sodium arsenite stress injury, as oxidative stress markers were reported to physiological levels when cells were stressed before incubating them with spores. Therefore, B. subtilis spores can be considered as a new agent to counteract oxidative stress on normal human keratinocytes.</p>}},
  author       = {{Petruk, Ganna and Donadio, Giuliana and Lanzilli, Mariamichela and Isticato, Rachele and Monti, Daria Maria}},
  issn         = {{2045-2322}},
  language     = {{eng}},
  month        = {{12}},
  number       = {{1}},
  publisher    = {{Nature Publishing Group}},
  series       = {{Scientific Reports}},
  title        = {{Alternative use of Bacillus subtilis spores : Protection against environmental oxidative stress in human normal keratinocytes}},
  url          = {{http://dx.doi.org/10.1038/s41598-018-20153-2}},
  doi          = {{10.1038/s41598-018-20153-2}},
  volume       = {{8}},
  year         = {{2018}},
}