Simon Yersin
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yersim.bsky.social
Simon Yersin
@yersim.bsky.social
PhD student in the @vonaeschlab.bsky.social at @dmf-unil.bsky.social
Working on gut microbiome, undernutrition and bioinformatic 🦠🇨🇭
Reposted by Simon Yersin
💩 How can we best conserve stool samples to recover viable bacteria after long-term storage? A new study @vonaeschlab.bsky.social offers practical answers to help make #microbiome #research more robust, reproducible, and globally accessible.
🔗 www.tandfonline.com/doi/full/10....
Evaluating long-term stool preservation methods for maximizing the recovery of viable human fecal microbiota
The gut microbiome plays a fundamental role in human health, prompting efforts to catalog and preserve its diversity across human populations. While DNA sequencing dominates microbiome research, cu...
www.tandfonline.com
December 11, 2025 at 4:25 PM
Reposted by Simon Yersin
Strain-level translocation and enrichment mechanisms of oral bacteria in the lower gastrointestinal tract of stunted children https://www.biorxiv.org/content/10.1101/2025.11.11.687814v1
November 12, 2025 at 2:19 AM
📢 New preprint: Strain-level translocation and enrichment mechanisms of oral bacteria in the lower gastrointestinal tract of stunted children
doi.org/10.1101/2025...
Strain-level translocation and enrichment mechanisms of oral bacteria in the lower gastrointestinal tract of stunted children
Emerging evidence suggests that ectopic colonization of oral bacteria in the lower digestive tract may exacerbate gastrointestinal disorders. Nevertheless, it remains unclear whether bacteria of oral ...
doi.org
November 12, 2025 at 3:40 PM
Reposted by Simon Yersin
🐝🦠 New paper: rdcu.be/eOf7A
Phages may drive microbial diversity, yet we often don’t even know how phages & bacteria correlate in nature. Our new study tackles this in the honeybee gut, thanks to the great work of PhD student @malickndiaye.bsky.social at @dmf-unil.bsky.social @fbm-unil.bsky.social
Phage diversity mirrors bacterial strain diversity in the honey bee gut microbiota - Nature Communications
Authors analyse paired viral and bacterial shotgun metagenomics data from individual honeybee guts, revealing modular, nested phage–bacteria networks, with viral diversity mirroring bacterial strain c...
www.nature.com
November 4, 2025 at 8:36 PM
Poster #278 is up at #EESMicrobiome !
Come have a look to chat about within-host transmission and everything #microbiome related! 🦠

@events.embl.org
September 16, 2025 at 4:38 PM
Reposted by Simon Yersin
Race by other names: critiquing population categories in microbiome research

#mSystems MiniReview by Marta Scaglioni

journals.asm.org/doi/10.1128/...
Race by other names: critiquing population categories in microbiome research | mSystems
Behind the façade of scientific objectivity, race continues to haunt modern science. Contemporary biomedical research often employs categories of human difference that have recently come under critici...
journals.asm.org
August 17, 2025 at 9:04 AM
Reposted by Simon Yersin
Summer strike #2: Our collaboration work with Arla Foods Ingredients has just been published in Food Research International:

www.sciencedirect.com/science/arti...

#microsky #gastrosky #microbiomesky #guthealth
Milk-derived casein glycomacropeptide improves colonic mucus function under Western-style diet feeding in a sialylation-dependent manner
The colonic mucus layer is the primary interface between the host and the gut microbiota. It serves both as an ecological niche for bacteria and a bar…
www.sciencedirect.com
August 11, 2025 at 9:35 PM
Reposted by Simon Yersin
You can get an accurate estimate of total bacterial biomass from stool metagenomes by simply normalizing by host read count, without needing any additional measurements.

Excellent work by UW Master's student Gechlang Tang in @asm.org #mSystems Journal.

journals.asm.org/doi/10.1128/...
🧵
Metagenomic estimation of absolute bacterial biomass in the mammalian gut through host-derived read normalization | mSystems
In this study, we asked whether normalization by host reads alone was sufficient to estimate absolute bacterial biomass directly from stool metagenomic data, without the need for synthetic spike-ins, ...
journals.asm.org
July 31, 2025 at 3:33 PM
📢 New publication!

Excellent work from my colleagues who showed the high prevalence of #AMR in children from rural communities in Ethiopia, even with limited access to antibiotics. #OneHealth

aricjournal.biomedcentral.com/articles/10....
December 20, 2024 at 9:08 AM
Excited to join the #bluesky community!

I'm a PhD student at the University of Lausanne, Switzerland, exploring the human digestive tract microbiota and its link to child stunting.

Interested in all things human microbiome, nutrition and bioinformatic! 🦠
December 2, 2024 at 5:10 PM