معرفی
Kimberly M. Davis, PhD, MSc, is an Associate Professor in the Department of Molecular Microbiology and Immunology at Johns Hopkins Bloomberg School of Public Health. Her research focuses on understanding bacterial population heterogeneity during infection to develop more effective antimicrobial strategies. She leads the Davis Lab, which investigates how individual bacteria within populations change during host infection and how these changes impact antibiotic susceptibility. Her work bridges molecular microbiology, immunology, and infectious disease research with significant implications for therapeutic development.
- PhD in Cell and Molecular Biology, University of Pennsylvania, 2011
- MSc in Molecular Cellular and Developmental Biology, University of Michigan, Ann Arbor, 2006
- BSc in Cell and Molecular Biology (minor in Mathematics), University of Michigan, Ann Arbor, 2005
Dr. Davis's research centers on bacterial phenotypic heterogeneity during infection, particularly how subpopulations of bacteria respond differently to host immune pressures. Her lab studies Yersinia pseudotuberculosis and Staphylococcus aureus infection models to understand how bacteria form heterogeneous populations within host tissues. Key interests include host-pathogen interactions, the impact of nitric oxide on bacterial growth, antibiotic tolerance mechanisms, and how host phagocytes shape bacterial population dynamics. Her innovative approaches combine fluorescent transcriptional reporters, immunofluorescence microscopy, and single-cell analysis to visualize and characterize bacterial subpopulations during infection.
Dr. Davis's recent publications reveal a strong focus on bacterial heterogeneity and antibiotic tolerance mechanisms. Her work demonstrates how host-derived stresses like nitric oxide create bacterial subpopulations with reduced antibiotic susceptibility. She has developed novel molecular tools to detect slow-growing bacterial subsets and antibiotic exposure within host tissues. Her research shows that bacteria responding to host immune factors often exhibit slowed growth rates, explaining their increased tolerance to antimicrobial treatments. Current work expands these findings to multiple bacterial pathogens and antibiotic classes, with implications for developing more effective treatment strategies that account for bacterial population heterogeneity.
- NIAID Career Transition Award (2017)
- Fisher Center Discovery Program grant, Johns Hopkins School of Medicine (2018)
- Faculty Innovation Fund Award, Johns Hopkins Bloomberg School of Public Health (2018)
- Willowcroft Foundation grant (2021)
- Finalist for Burroughs Wellcome Fund Investigators in the Pathogenesis of Infectious Disease (PATH) program (2022)
Dr. Davis actively mentors multiple graduate students and postdoctoral fellows in her lab. Current trainees include PhD students in Molecular Microbiology and Immunology (MMI) and an ScM student. Her lab has successfully trained several students who have gone on to PhD programs and professional positions. Her research is supported by multiple grants including the NIAID Career Transition Award and foundation grants, focusing on bacterial heterogeneity, host-pathogen interactions, and antibiotic tolerance mechanisms. She collaborates with researchers across Johns Hopkins and other institutions to advance understanding of bacterial infection dynamics.
The Davis Lab employs a multidisciplinary approach combining molecular microbiology, immunology, and imaging techniques to study bacterial population dynamics during infection. The lab maintains active collaborations with other research groups at Johns Hopkins, particularly in developing novel imaging approaches and infection models. Current projects focus on creating tools to detect bacterial growth differences, studying antibiotic susceptibility in heterogeneous populations, examining virulence factor expression heterogeneity, and developing single-cell approaches to characterize bacterial subpopulations within host tissues.
