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Jan Claesen

@claesengroup.bsky.social

4.2K followers 1.6K following 210 posts

Associate Professor at Lerner Research Institute, Cleveland Clinic. Lover of bacteria in isolation and in communities. Dissecting the human microbiome on a molecular level. 🇧🇪🇺🇸 Father of two. Views are my own. https://claesengroup.org/

claesengroup.org

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Jan Claesen @claesengroup.bsky.social · Oct 19

Hi everyone, I tried assembling a Microbiome & friends starter pack.
🦠🧫🔬

Still learning to use bluesky and might have missed you, let me know if you would like to be included.

go.bsky.app/Fq36egy

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Jan Claesen @claesengroup.bsky.social · 13d

Ruin a book with a car:

Ford of the rings

Jo @moartoast.bsky.social · 13d

Ruin a book with a car:

The Old Man and the C-Class

Reposted by Jan Claesen

Glennyrodge @glennyrodge.bsky.social · 19d

Music FACT: Placebo were originally a Cure tribute band

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Jan Claesen @claesengroup.bsky.social · Sep 8

She's a real hero!
💪👇

TSN @tsnofficial.bsky.social · Sep 8

Gabrielle Wall sets the Guinness World Record for fastest 100M on LEGO at 24.75 seconds! 😂🤕

(🎥: Guinness World Records)

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Reposted by Jan Claesen

Rebecca Keogh @rebecca-keogh.bsky.social · Sep 3

✨ Exciting News ✨I am thrilled to share that I have accepted a position as an Assistant Professor in the Department of Infectious Diseases and Microbiology (IDM), at the University of Pittsburgh School of Public Health!

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Jan Claesen @claesengroup.bsky.social · Aug 20

These are awesome! Best of luck on your defense.

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Jan Claesen @claesengroup.bsky.social · Aug 13

Slightly diminish a band:
The green mild bell peppers

Mattslew Batberg-Mothfit (any/all) @mbrobergmoffitt.bsky.social · Aug 13

Slightly diminish a band: Bronze Maiden

Mattslew Batberg-Mothfit (any/all) @mbrobergmoffitt.bsky.social · Aug 13

Slightly diminish a band: Twenty Pilots

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Jan Claesen @claesengroup.bsky.social · Aug 7

Was great to see you again Nadine! Have a safe trip back.

Reposted by Jan Claesen

Nadine Ziemert @nadineziemert.bsky.social · Aug 7

Conferencing with my favorite natural product chemist this week at the #ASP2025 in Grands Rapids, Michigan. Great science, inspiring talks, and reconnecting with friends and colleagues! @claesengroup.bsky.social @eustaquiolab.bsky.social @balunaslab.bsky.social #SecMet #NaturalProducts

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Jan Claesen @claesengroup.bsky.social · Aug 4

Potato, potahto, tomato, tomahto
Let's call the whole thing off 🎶🎶

www.theguardian.com/science/2025...

‘This wasn’t obvious’: the potato evolved from a tomato ancestor, researchers find

Hybridisation event took place about 9 million years ago, helping to ‘spark the emergence of a new organ’

www.theguardian.com

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Reposted by Jan Claesen

Nadine Ziemert @nadineziemert.bsky.social · Jul 8

Check out the Ziemert Lab’s new YouTube channel
m.youtube.com/@ZiemertLab
We’ve uploaded short tutorial videos on how to use our tools for genome mining and natural product discovery.
Thanks Semih, @martinaadamek.bsky.social @turgutmesut.bsky.social ! #GenomeMining #SecMet #naturalproducts

ZiemertLab

The Ziemert lab is interested in the evolution and distribution of bacterial secondary metabolites. These bioactive compounds are especially important in human medicine as the chemical scaffolds are t...

m.youtube.com

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Jan Claesen @claesengroup.bsky.social · Jul 15

I don't know, just one of our bad habits?

Though when I submit way ahead of time, somehow the grants office ends up sending in last minute anyways.

Even while I am away on travel (with due advance notice) 🤷‍♂️

I guess we're not alone in our bad habits 😁

Jan Claesen @claesengroup.bsky.social · Jul 15

Less favorite but also interesting is how several Corynes smell like moist armpit 😝

Jan Claesen @claesengroup.bsky.social · Jul 15

My favorite is hands down the wet forest soil smell of Streptomyces 🥰

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Reposted by Jan Claesen

Dr. Raven the Science Maven @ravenscimaven.bsky.social · Jul 10

NASA is more than rockets and moonwalks. NASA is behind much of our everyday technology. From space discovery, to Air Jordans, to CAT scans, NASA has played a role. We get it all on less than a penny of every federal dollar. Now their science may be gutted by 50%.
#NASADidThat

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Reposted by Jan Claesen

Science Magazine @science.org · Jul 4

🎉 Congratulations to Djenet Bousbaine, winner of the 2025 NOSTER & Science Microbiome Prize for her work to illuminate how the immune system responds to the beneficial skin microbiome.

Learn more: scim.ag/4lVwpFx

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Reposted by Jan Claesen

Andreas Bäumler @abaumler.bsky.social · Jun 26

The new open access policy of NIH will take effect next week (July 1st). All NIH funded research 🔬🧪🧬accepted after July 1st must be open access upon publication. Worried about fees? 💸 Check out how IAI stacks up against other journals—you might be surprised. #OpenAccess #SciComm #Microbiology

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Jan Claesen @claesengroup.bsky.social · Jun 24

When all this pollution is causing you headaches...

💪🦠

Nature Chemistry @natchem.nature.com · Jun 24

Paracetemol from plastic waste www.nature.com/articles/s41...

A biocompatible Lossen rearrangement in Escherichia coli - Nature Chemistry

Biocompatible chemistry merges chemo-catalytic reactions with cellular metabolism for sustainable small-molecule synthesis. Now a biocompatible Lossen rearrangement has been demonstrated to control ba...

www.nature.com

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Reposted by Jan Claesen

Brittany Bennett @greenwoodbritt.bsky.social · Jun 21

Well this is f’in sad #ASMicrobe

An empty booth at ASM that should have housed the NSF

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Reposted by Jan Claesen

Pamela Ferretti @pamferretti.bsky.social · Jun 4

Interested in microbiome GWAS and heritability studies? Check out our new Review in Nature Reviews Genetics! We explore key findings, challenges, and future directions of the field.
rdcu.be/epoRR

@blekhman.bsky.social @sambhawa.bsky.social and Dr. Kelsey Johnson.

Genomics of host–microbiome interactions in humans

Nature Reviews Genetics - In this Review, Ferretti et al. discuss advances in our understanding of interactions between the human genome and the microbiome, including the effects of the microbiome...

rdcu.be

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Reposted by Jan Claesen

Segata Lab @cibiocm.bsky.social · Jun 3

🥁NEW publication from our lab:
the largest meta-analysis of gut microbiome associations with CRC!

www.nature.com/articles/s41...

🧵⬇️

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Pooled analysis of 3,741 stool metagenomes from 18 cohorts for cross-stage and strain-level reproducible microbial biomarkers of colorectal cancer - Nature Medicine

An analysis of 18 metagenomic datasets of individuals with colorectal cancer, adenomas and healthy controls yields improved cancer prediction accuracy based solely on gut metagenomics, as well as the ...

www.nature.com

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Reposted by Jan Claesen

Buck Samuel 🪱🦠🧬🔬 @microbeminded.bsky.social · May 31

Opening for a #postdoc in the lab available immediately. Please spread the word.

DETAILS HERE: jobrxiv.org/job/baylor-c...

cc: #academicJobs #postdocJobs #microbiome #Celegans #organoids #IBD #PathSky #Medsky #AcademicSky 🧪 🧬 🦠

Postdoctoral Associate in IBD genetics in C. elegans and organoids

Post a job in 3min, or find thousands of job offers like this one at jobRxiv!

jobrxiv.org

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Jan Claesen @claesengroup.bsky.social · May 31

Of course, added you to the second one

Jan Claesen @claesengroup.bsky.social · May 28

Pull handle for defenestration

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Reposted by Jan Claesen

Thiago Carvalho @cyrilpedia.bsky.social · May 26

'If successful, it would be the first new class of antibiotic capable of killing acinetobacter or any other “Gram-negative” bacteria to be developed for more than 50 years. This type of bug has a structure that makes it more difficult to treat.'
www.ft.com/content/1f94...

Roche extends trials of promising antibiotic against resistant superbug

If successful, it would be the first new class of drug against certain bacteria strains for more than 50 years

www.ft.com

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Jan Claesen @claesengroup.bsky.social · May 23

Congrats! 🎉

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