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Contact Details

Phone
+64 3 556 8250
Email
leah.smith@otago.ac.nz
Position
Research Fellow
Department
Department of Microbiology and Immunology
Qualifications
PhD (Microbiology), MS, BS (Biology)
Research summary
Investigating phage-biofilm interactions and bacterial defense systems.
Teaching
Teaching experience in Microbiology, Genetics, and Human Body systems.

Research

Bacterial viruses (bacteriophages, or phages) represent a promising solution towards serious global concerns like antibiotic resistance. However, phage-based therapies are limited by gaps in our understanding of fundamental phage biology.

My current research focus is to understand the genetic factors that influence phage infection of bacterial biofilms, which often form in wounds and on medical devices. Biofilms represent a serious clinical challenge, as they often resist conventional antibiotic treatment due to their complex structure and metabolism. My research incorporates single-celled techniques and high-throughput genomics to understand how phages interact with biofilms. Investigating phage-biofilm interactions will allow us to improve the efficacy of phage therapy for both environmental and clinical applications.

My postdoctoral and PhD research focused on CRISPR-Cas bacterial immune systems. This included understanding the activity and regulation of type III systems, and investigating bacterial interactions with nucleus-forming jumbo phages.

I am available for Postgraduate supervision

Research interests

  • Antimicrobial resistance (AMR)
  • Biofilms
  • CRISPR-Cas
  • Gene regulation
  • Genomics

Research funding and awards

  • 2024: L'Or?al-UNESCO For Women in Science Young Talent Fellowship
  • 2024: PI on University of Otago Research Grant
  • 2024: PI on Marsden Fast-Start Grant, Royal Society of New Zealand
  • 2023: PI on BMS Kickstarter Funding, University of Otago
  • 2022: AI on Dean's Bequest Grant, University of Otago

Publications

Kyte, N., Fuchs, M., Smith, L. M., & Fineran, P. C. (2026). Defining the essential genome of diverse phages with phage Tn-seq. Nature Microbiology. Advance online publication. doi: 10.1038/s41564-026-02486-1 Journal - Research Article

Eichler, A. H., Hitz, I. F., Koonce, K. C., Smith, L. M., Mauritzen, J. J., & Høyland-Kroghsbo, N. M. (2026). PMI TechNote: Bacteriophages: From the petri dish to conquering the nooks and crannies of difficult-to-treat infections. APMIS, 134(8), e70249. doi: 10.1111/apm.70249 Journal - Research Other

Smith, L. M., & Fineran, P. C. (2025). Type I CRISPR-Cas immunity primes type III spacer acquisition. Cell Host & Microbe. Advance online publication. doi: 10.1016/j.chom.2025.07.021 Journal - Research Article

Mahler, M., Cui, L., Smith, L. M., Wandera, K. G., Dietrich, O., Mayo-Muñoz, D., … Dubrulle, J., Malone, L. M., Jackson, S. A., … Fineran, P. C. (2025). Phage arabinosyl-hydroxy-cytosine DNA modifications result in distinct evasion and sensitivity responses to phage defense systems. Cell Host & Microbe, 33, 1173-1190. doi: 10.1016/j.chom.2025.06.005 Journal - Research Article

Harding, K. R., Malone, L. M., Kyte, N. A. P., Jackson, S. A., Smith, L. M., & Fineran, P. C. (2025). Genome-wide identification of bacterial genes contributing to nucleus-forming jumbo phage infection. Nucleic Acids Research, 53, gkae1194. doi: 10.1093/nar/gkae1194 Journal - Research Article

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