Oxygen Exposure and Tolerance Shapes the Cell Wall-Associated Lipids of the Skin Commensal Cutibacterium acnes
(2023) In Microorganisms 11(9).- Abstract
Cutibacterium acnes is one of the most abundant bacteria on the skin. Being exposed to oxygen and oxic stress, the secretion of the bacterial antioxidant protein RoxP ensures an endogenous antioxidant system for the preservation of skin health. To investigate the impact of the antioxidant RoxP on oxidation of the bacteria, wildtype and an isogenic roxp mutant were cultured in anaerobic and oxic conditions. The carbonylated status of proteins were recorded, as were the most significant modifications in a relative intensity of free fatty acids (FFA) and lipids containing fatty acids (FA), such as di- (DG) and triglycerides (TG), di- (DGDG) and sulfoquinozyldiacylglycerol (SQDG) and ceramides. Concerning the fatty acid types, it was... (More)
Cutibacterium acnes is one of the most abundant bacteria on the skin. Being exposed to oxygen and oxic stress, the secretion of the bacterial antioxidant protein RoxP ensures an endogenous antioxidant system for the preservation of skin health. To investigate the impact of the antioxidant RoxP on oxidation of the bacteria, wildtype and an isogenic roxp mutant were cultured in anaerobic and oxic conditions. The carbonylated status of proteins were recorded, as were the most significant modifications in a relative intensity of free fatty acids (FFA) and lipids containing fatty acids (FA), such as di- (DG) and triglycerides (TG), di- (DGDG) and sulfoquinozyldiacylglycerol (SQDG) and ceramides. Concerning the fatty acid types, it was observed that the free fatty acids contained mainly C12:0–C26:0 in hydroxy and acylated forms, the DG contained mainly C29:0–C37:0, the TG contained mainly C19:0–C33:0, and the DGDG/SQDGs contained very long fatty acids (C29:0–C37:0) demonstrating the interdependence of de novo synthesis of lipids and RoxP. The area of DGDG peaks (924.52, 929.56 and 930.58) were affected by bacterial growth conditions, with the exception of m/z 910.61. Moreover, the FFA unsaturation is wider in the SQDG species (C30:0 to C36:6) than in DG, TG or free FFA species. It could be concluded that both environmental oxidative statuses, as well as the prevalence of bacterial antioxidant systems, significantly shape the lipidome of C. acnes.
(Less)
- author
- Popa, Iuliana ; Touboul, David ; Andersson, Tilde LU ; Fuentes-Lemus, Eduardo ; Santerre, Cyrille ; Davies, Michael J. and Lood, Rolf LU
- organization
- publishing date
- 2023-09
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- ceramides, Cutibacterium acnes, fatty acids, lipids, mono-, di- diacylglyceryl, oxidation, oxidative stress, protein carbonylation, skin, sulfoquinozyldiacylglycerol
- in
- Microorganisms
- volume
- 11
- issue
- 9
- article number
- 2260
- publisher
- MDPI AG
- external identifiers
-
- scopus:85172800486
- ISSN
- 2076-2607
- DOI
- 10.3390/microorganisms11092260
- language
- English
- LU publication?
- yes
- id
- 4cbd98df-f215-49a8-a735-07895e42415a
- date added to LUP
- 2023-12-13 14:11:11
- date last changed
- 2023-12-13 14:13:22
@article{4cbd98df-f215-49a8-a735-07895e42415a,
abstract = {{<p>Cutibacterium acnes is one of the most abundant bacteria on the skin. Being exposed to oxygen and oxic stress, the secretion of the bacterial antioxidant protein RoxP ensures an endogenous antioxidant system for the preservation of skin health. To investigate the impact of the antioxidant RoxP on oxidation of the bacteria, wildtype and an isogenic roxp mutant were cultured in anaerobic and oxic conditions. The carbonylated status of proteins were recorded, as were the most significant modifications in a relative intensity of free fatty acids (FFA) and lipids containing fatty acids (FA), such as di- (DG) and triglycerides (TG), di- (DGDG) and sulfoquinozyldiacylglycerol (SQDG) and ceramides. Concerning the fatty acid types, it was observed that the free fatty acids contained mainly C12:0–C26:0 in hydroxy and acylated forms, the DG contained mainly C29:0–C37:0, the TG contained mainly C19:0–C33:0, and the DGDG/SQDGs contained very long fatty acids (C29:0–C37:0) demonstrating the interdependence of de novo synthesis of lipids and RoxP. The area of DGDG peaks (924.52, 929.56 and 930.58) were affected by bacterial growth conditions, with the exception of m/z 910.61. Moreover, the FFA unsaturation is wider in the SQDG species (C30:0 to C36:6) than in DG, TG or free FFA species. It could be concluded that both environmental oxidative statuses, as well as the prevalence of bacterial antioxidant systems, significantly shape the lipidome of C. acnes.</p>}},
author = {{Popa, Iuliana and Touboul, David and Andersson, Tilde and Fuentes-Lemus, Eduardo and Santerre, Cyrille and Davies, Michael J. and Lood, Rolf}},
issn = {{2076-2607}},
keywords = {{ceramides; Cutibacterium acnes; fatty acids; lipids; mono-, di- diacylglyceryl; oxidation; oxidative stress; protein carbonylation; skin; sulfoquinozyldiacylglycerol}},
language = {{eng}},
number = {{9}},
publisher = {{MDPI AG}},
series = {{Microorganisms}},
title = {{Oxygen Exposure and Tolerance Shapes the Cell Wall-Associated Lipids of the Skin Commensal Cutibacterium acnes}},
url = {{http://dx.doi.org/10.3390/microorganisms11092260}},
doi = {{10.3390/microorganisms11092260}},
volume = {{11}},
year = {{2023}},
}