In FY 2019, we continued our efforts to understand the impact that phenol-soluble modulins have on biofilm development. We have completed our set of isogenic deletion mutants in S. epidermidis psm loci to investigate the role all PSMs play in S. epidermidis biofilm development and dissemination from device-related infection in vivo and have analyzed the impact of all PSMs on S. epidermidis biofilm formation. Furthermore, we have started a more encompassing analysis of sepsis caused by coagulase-negative staphylococci, which includes research on S. haemolyoicus and S. aureus in addition to S. epidermidis. This research addresses one of the most frequent and severe complications of biofilm formation on indwelling medical devices by staphylococci. Finally, we completed a project investigating the reasons of advantages quorum-sensing mutants have in S. aureus biofilm infection.
| Zheng, Yue; He, Lei; Asiamah, Titus K et al. (2018) Colonization of medical devices by staphylococci. Environ Microbiol 20:3141-3153 |
| Nakatsuji, Teruaki; Chen, Tiffany H; Butcher, Anna M et al. (2018) A commensal strain of Staphylococcus epidermidis protects against skin neoplasia. Sci Adv 4:eaao4502 |
| Le, Katherine Y; Park, Matthew D; Otto, Michael (2018) Immune Evasion Mechanisms of Staphylococcus epidermidis Biofilm Infection. Front Microbiol 9:359 |
| Da, Fei; Joo, Hwang-Soo; Cheung, Gordon Y C et al. (2017) Phenol-Soluble Modulin Toxins of Staphylococcus haemolyticus. Front Cell Infect Microbiol 7:206 |
| Otto, Michael (2017) Staphylococcus epidermidis: a major player in bacterial sepsis? Future Microbiol 12:1031-1033 |
| Nguyen, Thuan H; Park, Matthew D; Otto, Michael (2017) Host Response toStaphylococcus epidermidisColonization and Infections. Front Cell Infect Microbiol 7:90 |
| Qin, Li; Da, Fei; Fisher, Emilie L et al. (2017) Toxin Mediates Sepsis Caused by Methicillin-Resistant Staphylococcus epidermidis. PLoS Pathog 13:e1006153 |
| Qin, Li; McCausland, Joshua W; Cheung, Gordon Y C et al. (2016) PSM-Mec-A Virulence Determinant that Connects Transcriptional Regulation, Virulence, and Antibiotic Resistance in Staphylococci. Front Microbiol 7:1293 |
| Joo, Hwang-Soo; Fu, Chih-Iung; Otto, Michael (2016) Bacterial strategies of resistance to antimicrobial peptides. Philos Trans R Soc Lond B Biol Sci 371: |
| Li, Tianming; He, Lei; Song, Yan et al. (2016) AraC-Type Regulator Rsp Adapts Staphylococcus aureus Gene Expression to Acute Infection. Infect Immun 84:723-34 |
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