| Title: |
Transcriptomic and metabolomic profiling reveals media- and host-dependent responses to Staphylococcus hominis in cell models |
| Authors: |
Liu, Wenxiu; Zhang, Tiansheng; Wang, Qian; Li, Zhunduo; Bai, Yanrui; Xiao, Han; Wang, Yan; Xiao, Ruihong; Tong, Liyu; Li, Yana; Qu, Xueli; Zhao, Xu; Zhang, Zhengchao; Sun, Hui |
| Contributors: |
The National Natural Science Foundation of China; The National Science and Technology Major Project of the Ministry of Science and Technology of Gansu; The Fundamental Research Funds for the Central Universities; the Talent Introduction Plan of The Second Hospital & Clinical Medical School, Lanzhou University; The Gansu Provincial Natural Science Foundation; The Medical Innovation and Development Project of Lanzhou University; Provincial University industry support project in Gansu |
| Source: |
PeerJ ; volume 14, page e20899 ; ISSN 2167-8359 |
| Publisher Information: |
PeerJ |
| Publication Year: |
2026 |
| Collection: |
PeerJ (E-Journal - via CrossRef) |
| Description: |
Background/aims Host-microbiota co-evolution maintains homeostasis via metabolic, immune, and neuroendocrine pathways. Diverse culture media and host cell models are widely used in microbiota research, but how these variables shape host transcriptional responses remains unclear. This study combined metabolomic, transcriptomic, and functional analyses to investigate how microbial culture medium and host cell type influence responses to a gut-derived Staphylococcus hominis isolate. Methods S. hominis was cultured for 96 h in Brain Heart Infusion (BHI) or Gifu Anaerobic Medium (GAM). Culture supernatants were collected for untargeted metabolomics and epithelial cell stimulation. Metabolomic profiling identified differentially expressed metabolites (—log 2 FC— >0, p < 0.05, variable importance in projection, VIP >1). RNA sequencing assessed transcriptional responses in four cell lines (MODE-K, NCM460, Henle-407, HEK-293T) treated with BHI- or GAM-derived supernatants. Differentially expressed genes (DEGs; —log 2 FC— >1, adjusted p < 0.05) were subjected to Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment, and principal component and correlation analyses were used to characterize transcriptional changes under different treatments. Functional assays quantified interleukin-6 (IL-6) and interleukin-8 (IL-8) secretion, intracellular triglyceride levels, and the lactate/pyruvate ratio. Results Metabolomics revealed medium-dependent remodeling of the exometabolome: BHI-derived supernatants were enriched in fatty acyls, glycerophospholipids, and pathways related to carbohydrate, energy, and lipid metabolism, whereas GAM-derived supernatants contained higher levels of sphingolipids and organic carbonic acids linked to purine and polyunsaturated fatty acid metabolism. Across four cell lines, DEGs induced by BHI-derived supernatants were mainly enriched in metabolic pathways, while GAM-derived supernatants more often engaged immune- and inflammation-related pathways. DEG overlap between cell ... |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.7717/peerj.20899 |
| Availability: |
https://doi.org/10.7717/peerj.20899; https://peerj.com/articles/20899.pdf; https://peerj.com/articles/20899.xml; https://peerj.com/articles/20899.html |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.8681FF3C |
| Database: |
BASE |