Lab Members



Paul Bollyky, MD, D.Phil – 2013  Dr. Bollyky is an Assistant Professor in the School of Medicine Division of Infectious Diseases, the Department of Microbiology and Immunology, and the Stanford Immunology Program. He received his BA from Columbia, his D.Phil from Oxford, and his MD from Harvard.   He was a medical resident at Brigham and Women’s Hospital, and an Infectious Disease Fellow at the University of Washington prior to joining the Stanford faculty in 2013.


Mike Kratochvil – 2016  Mike is a shared post-doc between the Bollyky lab and the Heilshorn lab at Stanford who is straddling the line between immunology and bio material engineering.  Mike is a Chemistry PhD from University of Wisconsin and we are excited to see how his skills can challenge our thinking about immunology and our hyaluronan projects.

Elizabeth Burgener, MD -2016 Liz is an MD and a pediatric pulmonology fellow who is interested in pseudomonas and Cystic Fibrosis.   In our lab, Liz is studying how Pf phage contribute to the disease burden in CF.   She uses qPCR to correlate sputum phage counts with clinical outcomes in CF.  Liz’s research is supported by a Cystic Fibrosis Foundation Vertex Award  and a Parker B Francis Fellowship.

Jonas D Van Belleghem – 2018  Jonas completed his PhD research at Ghent University, where he studied the interaction of bacteriophages and the human immune response.  Jonas has a profound interest in phage biology and phage therapy, more specifically in the interaction between phages and the mammalian host. Jonas is looking forward to further elucidate the interaction of phages with the human immune response, and the potential impacts this could have on phage therapy or human health. Jonas is a CHRI Research Fellow.

Christiaan Robert de Vries, MD, PhD- 2018  Christiaan is an Infectious Disease Fellow who is examining the use of vaccines targeting Pf phage to prevent Pseudomonas infection. He completed his MD/PhD at Rutgers and went on to Internal Medicine Residency at the Mount Sinai Hospital before coming to Stanford for fellowship. Christiaan was awarded a 2020 Doris Duke Physician-Scientist Fellowship for his phage-vaccine work

Kevin Chen – 2019 Kevin received his PhD at Texas A&M University Health Science Center, where he studied combinational antimicrobial therapy against drug resistant bacteria, particularly P. aeruginosa, in cystic fibrosis patients. During his PhD, Kevin became interested in phage therapy against P. aeruginosa. Currently, Kevin works on how Pf phages contribute to antibiotic resistance in P. aeruginosa

Sally Demirdjian -2020 Sally completed her PhD in Microbiology and Immunology at Dartmouth. Her graduate research focused on host-pathogen interactions, specifically the determinants for phagocytosis and clearance of Pseudomonas. She is interested in expanding her immunology training and developing novel monoclonal antibodies for the treatment of autoimmune diseases and P. aeruginosa infections.”

Jen Sequoia – 2020 Jen is a pediatric resident at Stanford who is interested in how bacteriophage impact human pregnancy.  She is co-mentored by Virginia Winn.  Prior to starting residency, Jen completed her MD and PhD at the University of Chicago where she studied the epigenetic regulation of early lymphocyte development.

Nina Pennetzdorfer – 2020 Nina completed her PhD in Molecular Microbiology at Graz University, where she studied regulated proteolysis events in Vibrio cholerae and the impact on outer membrane composition. She is interested in how Pf phage impact host-pathogen mechanisms and molecular interactions between phage and Pseudomonas as a bacterial host.


Nadine Nagy – 2014 Nadine  finished her postdoctoral research at Benaroya Research Institute and then moved to join the Bollyky lab.  Her research is focused on the role of hyaluronan during development and progression of type 1 diabetes (T1D).  She is helping to develop the drug 4-MU for clinical trials.

Gernot Kaber – 2014 Gernot has joined the Bollyky lab after a working  for the Benaroya Research Institute.   Gernot is involved in practically every ongoing research project in the Bollyky lab, because he knows how to do EVERYTHING.


Sarah Smith – 2020 Sarah comes to us from the Clemson University Department of Chemical and Biomolecular Engineering.  After earning her bachelors there and working as a lab technician over three labs she decided to make the move out west to Stanford.  Sarah deals with a large portion of the lab logistics and is working on her masters in Microbiology and Cell Science from the University of Florida in her free time.


Aviv Hargil – 2019 Aviv graduated from University of Chicago. He takes care of the vivarium and  genotyping. He  is involved in projects related to 4Mu development. Aviv is interested in a variety of biological topics and is excited to learn more about immunology in the Bollyky lab.


Graham Barlow – 2017 Graham is a PhD candidate in the Immunology program at Stanford University School of Medicine.   He is co-mentored by Garry Nolan and is working on the using high-dimensional imaging to study how cells coordinate in their native tissue contexts. He is especially interested in tissue architecture and how this organization induces and breaks tolerance, especially over long time periods.

Medeea Popescu -2018 Medeea is a PhD candidate in the Immunology program at Stanford University School of Medicine. She is co-mentored by Steve Quake and is working to understand how Pf phage impact human immunology in the context of Pseudomonas aeruginosa infection.

Hunter Antonio Martinez – 2018 Hunter is a PhD candidate in the Immunology program at Stanford University School of Medicine. His research interests are to understand the factors that govern how T cells switch between metabolic states upon activation. Specifically, he hope to gain insight on the role of CD44, a promiscuous transmembrane protein involved in cellular adhesion. The inputs CD44 relays to a T cell at various stages of an immunological campaign has ramifications for both immunometabolism as well potential therapeutic interest.

Naomi Lynn Haddock – 2018 Naomi Haddock is a graduate student in the Immunology Program at the Stanford University School of Medicine. Naomi is interested in using both experimental and computational techniques in infectious disease immunology research. Her work focuses on the circulating and pulmonary phageome in Cystic Fibrosis.

Tejas Dharmaraj -2019 Tejas is a first year student in the MD-PhD program. Before coming to Stanford, he studied nuclear structural proteins with Katherine Wilson at John Hopkins. Tejas is interested in the intracellular functions and biophysical properties of filamentous bacteriophages.

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