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Synthetically-programmed antioxidant delivery by a domesticated skin commensal

ABSTRACT: Smart Skin Cutibacterium acnes Probotic

PROVIDER: PRJEB78978 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR13489177_1.fastq.gz	Fastqsanger.gz
	ERR13489177_2.fastq.gz	Fastqsanger.gz
	ERR13489178_1.fastq.gz	Fastqsanger.gz
	ERR13489178_2.fastq.gz	Fastqsanger.gz
	ERR13489179_1.fastq.gz	Fastqsanger.gz

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Engineered skin microbiome-assisted delivery to the pilosebaceous unit

Project description:Microbes are fascinating molecular machines which can be equipped with synthetic genetic programs that allow them to produce therapeutic molecules targeted on demand upon disease sensing. Cutibacterium acnes engraftment capacity and its living habitat close to important pharmacological targets makes it an attractive chassis to create skin-delivered therapeutics. Here, we report the engineering of this bacterium, the most abundant commensal of the human skin, to produce and secrete the therapeutic molecule neutrophil gelatinase-associated lipocalin in vivo, known to modulate cutaneous sebum production.

2023-11-10 | PXD044802 | Pride

Molecular typing and functional profiling of acne-derived Cutibacterium acnes isolates reveal determinants of skin inflammation

Project description:Cutibacterium acnes (C. acnes) is a ubiquitous skin commensal bacterium that is generally well tolerated by the immune system. Different strain-types of C. acnes have been reported to be enriched on patients with acne. To understand if these strain-types contribute to skin inflammation, we generated a library of over 200 C. acnes isolates from skin swabs of healthy and acne subjects and assessed their strain-level identity and inflammatory potential. Phylotype II K-type strains were more frequent on healthy and acne non-lesional skin compared to lesional. Phylotype IA-1 C-type strains were dominant on acne lesional skin but absent from healthy. Measurement of host cytokine responses from C. acnes supernatant revealed neither strain-type nor skin-type association predicted inflammatory potential. However, differential proinflammatory responses were induced from identical strain-types, but these differences were not attributable to protease, short chain fatty acid or porphyrin production. Instead, whole genome sequencing revealed the presence of a linear plasmid in high inflammatory strain-types. Intradermal injection of C. acnes in mouse skin revealed a plasmid-associated inflammatory response in dermal fibroblasts, revealed by single-cell RNA sequencing. We conclude that C. acnes strain-type is not sufficient to predict inflammation but other virulence factors including a plasmid may contribute to disease.

2023-08-18 | GSE211279 | GEO

human skin metagenome

Project description:Owner identification using Cutibacterium acnes (Propionibacterium acnes) 16S rRNA genotype

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human skin metagenome

Project description:Owner identification using Cutibacterium acnes (Propionibacterium acnes) 16S rRNA genotype

| PRJDB8038 | ENA

Functional Dynamics of Dendritic Cells in Response to Cutibacterium acnes Strains Associated with Healthy and Acne-prone Skin

Project description:The pathogenesis of acne vulgaris is multifactorial and is influenced by the presence of Cutibacterium acnes. This study investigated how different strains of C. acnes, associated with either healthy skin (CH) or acne-prone skin (CA), selectively modulate the function of three dendritic cell (DC) subtypes: Langerhans cell-derived (LCDC), monocyte-derived (moDCs), and myeloid (mDCs). Our findings revealed that all DC subtypes secreted varying levels of TGF-β, IL-1β, IL-6, IL-12p70, and IL-23 in response to C. acnes stimulation. Notably, moDCs exhibited the highest cytokine secretion in response to CA-ribotypes, indicating their potent immune responsiveness. Conversely, LCDCs were the least responsive, regardless of the ribotypes. Principal component (PCA) and gene ontology (GO) analysis of bulk RNA sequencing data of DCs exposed to C. acnes identified extensive transcriptional changes, particularly in immune response pathways. moDCs showed the most pronounced transcriptional changes, aligning with their high cytokine secretion levels. Additionally, we identified specific genes upregulated by CA-ribotypes, with notable differences among the DC types, highlighting the unique contributions of each DC subtype to the skin's immune defense mechanisms against C. acnes. Overall, our study underscores the complexity of DC responses in the skin's immune environment and provides valuable insights into their roles in acne.

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proteomic analysis of membrane vesicles from clinical Cutibacterium acnes isolates

Project description:Recently the membrane vesicles (MVs) production has been observed in Gram-positive bacterium, Cutibacterium acnes (C. acnes). In order to explore the mechanism of antibiotic resistance and the virulent components within the C. acnes-derived MVs, we isolated MVs from the clinical C. acnes, which were sensitive or resistant to antibiotics erythromycin and clindamycin. With the LC-MS/MS method, we detected several lipases, virulent factors and cell division protein differentially expressed between the sensitive and the resistant C. acnes-derived MVs.

2022-05-20 | PXD025460 | Pride

Characterization of the genes that were regulated by feeding with C. acnes strains

Project description:In the present study, we investigated the effect of Cutibacterium acnes on lifespan and susceptibility to infection with Staphylococcus aureus using Caenorhabditis elegans as a model animal. When adult C. elegans were fed C. acnes strains, the lifespan of the animals fed pathogenic C. acnes strain (HM-122) was significantly shorter than that of animals fed OP50 (control). In contrast, the lifespan of the animals fed commensal C. acnes strain (HM-555) was not significantly different from that of animals in the control group. Moreover, the worms fed the commensal C. acnes strain were more resistant to infection with S. aureus. Transcriptional profiling comparing HM-122-, HM-555- and control-fed animals suggested that genes related to “cuticle development involved in collagen and cuticulin-based cuticle molting cycle” were regulated by HM-122, and genes related to “defense response to gram-positive bacterium” were regulated by HM-555.

2021-10-07 | GSE176406 | GEO

Potential Functionality of Cutibacterium acnes Extracellular Vesicles in Atopic Dermatitis and Acne Vulgaris: A Comparative Proteomic Analysis

Project description:Comparative analysis of Cutibacterium acnes extracellular vesicles proteomics from atopic dermatitis and acne vulgaris.

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