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Decoding the Regulatory Networks of Proteus mirabilis Under Succinic Acid Stress: A Multi-Omics Approach

ABSTRACT: Proteus mirabilis, a key catheter-associated urinary tract infection pathogen that forms antibiotic-resistant crystalline biofilms, was shown via multi-omics analyses to be multimodally inhibited by succinic acid. At 15 mM, succinic acid reduced the bacterium’s growth by 70% and biofilm formation by 50%. Metabolomics revealed dysregulation in tryptophan/arginine metabolism, nucleotide biosynthesis, and the tricarboxylic acid cycle; transcriptomics showed downregulated ribosomal genes, oxidative phosphorylation, and efflux pumps plus upregulated arginine transport; and proteomics demonstrated suppressed T6SS virulence factors and iron acquisition proteins. Mechanistically, succinic acid is proposed to reduce K6 acetylation of the histone-like nucleoid structuring protein, enhancing its oligomerization to repress T6SS genes and inhibit biofilm formation. By targeting metabolism, virulence, and stress adaptation, succinic acid circumvents single-target resistance, offering a strategy to combat multidrug-resistant P. mirabilis via biofilm disruption and pathogenicity suppression.The uploaded data comprise two omics datasets:Acetyl-proteomics: Folders prefixed with XB10893DPAc (treatment: H1–H3; control: T1–T3)；Proteomics: Folders prefixed with XB10893DA (treatment: H1–H3; control: T1–T3).

ORGANISM(S): Proteus Mirabilis

SUBMITTER: Xiancheng Li

PROVIDER: PXD068166 | iProX | Mon Sep 08 00:00:00 BST 2025

REPOSITORIES: iProX

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Decoding the Regulatory Networks of Proteus mirabilis Under Succinic Acid Stress: A Multi-Omics Approach

Project description:<p>Proteus mirabilis, a key catheter-associated urinary tract infection pathogen that forms antibiotic-resistant crystalline biofilms, was shown via multi-omics analyses to be multimodally inhibited by succinic acid. At 15 mM, succinic acid reduced the bacterium’s growth by 70% and biofilm formation by 50%. Metabolomics revealed dysregulation in tryptophan/arginine metabolism, nucleotide biosynthesis, and the tricarboxylic acid cycle; transcriptomics showed downregulated ribosomal genes, oxidative phosphorylation, and efflux pumps plus upregulated arginine transport; and proteomics demonstrated suppressed T6SS virulence factors and iron acquisition proteins. Mechanistically, succinic acid is proposed to reduce K6 acetylation of the histone-like nucleoid structuring protein, enhancing its oligomerization to repress T6SS genes and inhibit biofilm formation. By targeting metabolism, virulence, and stress adaptation, succinic acid circumvents single-target resistance, offering a strategy to combat multidrug-resistant P. mirabilis via biofilm disruption and pathogenicity suppression.</p>

2025-09-08 | MTBLS12952 | MetaboLights

Arginine impacts aggregation, biofilm formation, and antibiotic susceptibility in Enterococcus faecalis

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Comparative transcriptional analysis of Staphylococcus epidermidis biofilm matrix variants in human platelet concentrates

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ClpV3 affects pathogenicity in Pseudomonas aeruginosa

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2020-04-20 | GSE148116 | GEO

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Project description:Candida albicans is an opportunistic pathogen and responsible for candidiasis. C. albicans readily forms biofilms on various biotic and abiotic surfaces, and these biofilms can cause local and systemic infections. C. albicans biofilms are more resistant than its free yeast to antifungal agents and less affected by host immune responses. Transition of yeast cells to hyphal cells is required for biofilm formation and is believed to be a crucial virulence factor. In this study, six components of ginger were investigated for antibiofilm and antivirulence activities against a fluconazole-resistant C. albicans strain. It was found 6-gingerol, 8-gingerol, and 6-shogaol effectively inhibited biofilm formation. In particular, 6-shogaol at 10 µg/ml significantly reduced C. albicans biofilm formation but had no effect on planktonic cell growth. Also, 6-gingerol and 6-shogaol inhibited hyphal growth in embedded colonies and free-living planktonic cells, and prevented cell aggregation. Furthermore, 6-gingerol and 6-shogaol reduced C. albicans virulence in a nematode infection model without causing toxicity at the tested concentrations. Transcriptomic analysis using RNA-seq and qRT-PCR showed 6-gingerol and 6-shogaol induced several transporters (CDR1, CDR2, and RTA3), but repressed the expressions of several hypha/biofilm related genes (ECE1 and HWP1), which supported observed phenotypic changes. These results highlight the antibiofilm and antivirulence activities of the ginger components, 6-gingerol and 6-shogaol, against a drug resistant C. albicans strain.

2018-12-25 | GSE117201 | GEO

Honeys Inhibit Virulence and Biofilm Formation in Enterohaemorrhagic Escherichia coli O157:H7, but Do not Harm Commensal Escherichia coli K-12 Biofilm

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Pseudomonas aerugiosa tctED deletion strain compared to wildtype

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