Contact information
Research groups
Jethro Johnson
OCMS Deputy Director
I am an Innovation Track Principal Investigator at the Kennedy Institute of Rheumatology and Deputy Director of the Oxford Centre for Microbiome Studies.
My research uses multi-omic and computational approaches to identify the molecular basis of host-gut microbiome interactions and understand their impact on health and disease.
In 2012 I completed a PhD in nutritional ecology at the University of Auckland, New Zealand, focussing on the effects of temperature on microbially-mediated digestion in ectothermic herbivores. I subsequently transitioned from wet to dry-lab research via an MRC career development fellowship in computational genomics, working with Professor Chris Ponting and Dr Andreas Heger at the Oxford MRC Functional Genomics Unit. As a postdoctoral research associate, I moved to the lab of Professor George Weinstock at the Jackson Laboratory for Genomic Medicine, Connecticut, USA, where I applied next-generation sequencing and computational genomic approaches to characterize the human microbiome. In particular, I focussed on the role of the microbiome in metabolic disease, working on the type 2 diabetes arm of the NIH Integrative Human Microbiome Project. I joined the Kennedy Institute in 2020 to establish my own research group and help run the OCMS.
Recent publications
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                Comparison of Lysis and Amplification Methodologies for Optimal 16S rRNA Gene Profiling for Human and Mouse Microbiome Studies.Journal article Rastegari F. et al, (2025), Int j mol sci, 26 
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                Changes in intestinal permeability and gut microbiota following diet-induced weight loss in patients with metabolic dysfunction-associated steatohepatitis and liver fibrosis.Journal article Koutoukidis DA. et al, (2024), Gut microbes, 16 
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                Skin Microbiome Variation with Cancer Progression in Human Cutaneous Squamous Cell Carcinoma.Journal article Voigt AY. et al, (2022), J invest dermatol 
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                Metagenomics: a path to understanding the gut microbiome.Journal article Yen S. and Johnson JS., (2021), Mamm genome 
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                Longitudinal Analysis of Serum Cytokine Levels and Gut Microbial Abundance Links IL-17/IL-22 With Clostridia and Insulin Sensitivity in HumansJournal article Zhou X. et al, (2020), Diabetes, 69, 1833 - 1842