Sign in

Sebastian Shaw

@millseba.bsky.social
240 followers 445 following 98 posts

Dad. Scientist. Interested in how Cryptosoridium tricks its host cells!

PostsRepliesMedia
Reposted by Sebastian Shaw
ParasitesRule @parasitesrule.org · 28/05/2026
Registration & abstract submission are open for the 37th Molecular Parasitology Meeting (MPM XXXVII) 🧫 @MJGubbels @Deepali_Ravel @omartheharb Sept 13–17, 2026 | Woods Hole, MA + virtual Abstract deadline: June 19 @rmc9z.bsky.social @mjgubbels.bsky.social @omarharb.org parasitesrule.com/mpm-xxxvii
045
Reposted by Sebastian Shaw
Nature Microbiology @natmicrobiol.nature.com · 14/05/2026
Out Now! Genomic heterogeneity of NAD(P)H dehydrogenase predisposes Cryptosporidium to clofazimine resistance #MicroSky
go.nature.com
Genomic heterogeneity of NAD(P)H dehydrogenase predisposes Cryptosporidium to clofazimine resistance
Nature Microbiology, Published online: 13 May 2026; doi:10.1038/s41564-026-02331-5Forward and reverse genetics identifies the mode of action of clofazimine in the parasite Cryptosporidium. The genomic locus encoding the target is heterogeneous, and a resistance-conferring allele is already widely distributed.
031
Sebastian Shaw @millseba.bsky.social · 13/05/2026
I would like to thank all co-authors, especially Gracyn who was a major driving force of this project! @striepenlab.bsky.social @francoismayer.bsky.social @parasitesrule.org
010
Sebastian Shaw @millseba.bsky.social · 13/05/2026
So… what does it clofazimean? NDH2 heterogeneity may act as a metabolic rheostat, enhancing parasite adaptability. Host diet, metabolism, microbiome, and immune pressure likely reshape parasite redox balance and drive allele dynamics.
120
Sebastian Shaw @millseba.bsky.social · 13/05/2026
The most surprising part: this resistance-associated ΔAA ndh2 allele is already widespread in C. parvum and C. hominis populations. So Cryptosporidium may carry pre-existing genetic heterogeneity that lets it rapidly adjust under drug pressure.
100
Sebastian Shaw @millseba.bsky.social · 13/05/2026
Knocking out ndh2 caused high-level clofazimine resistance, and recombinant CpNDH2 directly reduced clofazimine. In other words: NDH2 helps activate clofazimine, and losing NDH2 helps the parasite escape.
100
Sebastian Shaw @millseba.bsky.social · 13/05/2026
Bulk segregant analysis pointed to one sharp locus on chromosome 7. At that locus we found ndh2, encoding type II NAD(P)H dehydrogenase. A small 2-bp deletion near the start of the gene became enriched under drug pressure.
100
Sebastian Shaw @millseba.bsky.social · 13/05/2026
We crossed a clofazimine-resistant strain with a susceptible one, selected recombinant progeny in mice, then treated with clofazimine. The treatment suppressed parasite growth, but the infection rebounded. The surviving progeny became more resistant.
100
Sebastian Shaw @millseba.bsky.social · 13/05/2026
Different C. parvum strains do not respond equally to clofazimine. That difference gave us a way to genetically map resistance.
100
Sebastian Shaw @millseba.bsky.social · 13/05/2026
Excited to share our new paper, co-led by Gracyn Buenconsejo and me. Why did a promising anti-#Cryptosporidium drug fail? We asked whether the parasite itself might already be genetically prepared to escape treatment. doi.org/10.1038/s415... #Clofazimine #forwardgenetics
doi.org
Genomic heterogeneity of NAD(P)H dehydrogenase predisposes Cryptosporidium to clofazimine resistance - Nature Microbiology
Forward and reverse genetics identifies the mode of action of clofazimine in the parasite Cryptosporidium. The genomic locus encoding the target is heterogeneous, and a resistance-conferring allele is...
242
Sebastian Shaw @millseba.bsky.social · 09/05/2026
3rd edition of the cheese bracket, and we have an winner: Cabriolait from Belgium! 🧀 On its way to 1st place, it defeated one Italian, two US, and one Swiss cheese. An impressive run!
010
Reposted by Sebastian Shaw
Clara Jeffery @clarajeffery.bsky.social · 11/04/2026
Science is good. We should fund it.
134125832516
Sebastian Shaw @millseba.bsky.social · 09/04/2026
Super excited about this!
000
Sebastian Shaw @millseba.bsky.social · 30/03/2026
Yes, it was easy to find them. I didn’t want to scrape with an object and that’s why we just did saliva. They spat into a sterile 15ml falcon tube 😅
110
Sebastian Shaw @millseba.bsky.social · 29/03/2026
Did a little experiment with Hannah and her friend from school: they collected some cheek cells from saliva and looked at them under the microscope. Their excitement when the cells came into view was priceless. A nice reminder that even simple experiments can sparkcuriosity. 🔬
120
Sebastian Shaw @millseba.bsky.social · 20/03/2026
Congrats Maryse!
010
Sebastian Shaw @millseba.bsky.social · 11/03/2026
This week’s family theme 👇🏻👇🏻👇🏻
000
Reposted by Sebastian Shaw
Jiménez-Ruiz Lab @jimenezruizlab.bsky.social · 10/03/2026
PhD opportunity at LMU Munich 🇩🇪 Join our lab to study the molecular and cellular biology of Apicomplexan parasites, with a focus on the apical complex, motility regulation, and post-translational modifications. Apply: elena.jimenez@lmu.de job-portal.lmu.de/jobposting/6...
job-portal.lmu.de
PhD student (m/w/d)
035
Reposted by Sebastian Shaw
LabEx ParaFrap @parafrap.bsky.social · 09/03/2026
📆 Join us for the scientific session of the ParaFrap Next Generation in Parasitology Workshop (May 18-21, 2026, Montpellier) ! 🧑‍🔬 Junior PIs will present their work. Registration is free but mandatory (includes lunch & coffee breaks). Spots are limited, register now! 👉 forms.gle/bYsb47iZG7pR...
01110
Reposted by Sebastian Shaw
tomate 🍅 @jascha.ohai.social.ap.brid.gy · 03/03/2026
When someone says „Scientists do not want you to know“ you can dismiss everything from there on. Scientists want you to know. They are desperate that you know. They can’t shut up about what they found out and want you to know.
7495864076
Sebastian Shaw @millseba.bsky.social · 19/02/2026
020
Sebastian Shaw @millseba.bsky.social · 19/02/2026
Looking for someone ambitious who wants to help shape a new lab, drive an independent project, and work in an international research environment in Zurich. Please share! #Postdoc #InfectionBiology
100
Sebastian Shaw @millseba.bsky.social · 19/02/2026
We use genetic crosses, CRISPR-based tools, and quantitative genetics to understand how Cryptosporidium evolves virulence and persistence. Strong interest in parasite genetics & host–pathogen interactions encouraged.
100
Sebastian Shaw @millseba.bsky.social · 19/02/2026
🚨 Postdoc position 🚨 I’m moving back to Switzerland this summer to launch my lab at the University of Zurich and am recruiting a Postdoctoral Fellow (start: late 2026). Details & application: jobs.uzh.ch/job-vacancie.... Please share! 😊
jobs.uzh.ch
UZH: Postdoc
The newly founded Cryptosporidium lab at the Institute of Parasitology focuses on the genetic and transcriptomic basis of parasite virulence and persistence in Cryptosporidium and is committed to incl...
1810
Sebastian Shaw @millseba.bsky.social · 16/02/2026
There are few emails better than one that says: “Happy to in principle accept your study for publication.” 🎉
020
Sebastian Shaw @millseba.bsky.social · 11/02/2026
Happy International Day of Women and Girls in Science! Let’s continue to support and celebrate them, and fight for equal opportunities for women in STEM! Shout-out to @shubhabevkal.bsky.social and @fra-florini.bsky.social! You’re the best! #WomenInScience #WomenInSTEM
071
Sebastian Shaw @millseba.bsky.social · 06/02/2026
Congrats
010
Sebastian Shaw @millseba.bsky.social · 25/01/2026
C’mon!
media.tenor.com
a man is riding a snowmobile that says polaris
ALT: a man is riding a snowmobile that says polaris
010
Sebastian Shaw @millseba.bsky.social · 25/01/2026
Joyful snow day!
040
Sebastian Shaw @millseba.bsky.social · 17/01/2026
Dexter is pretty good! Premiered in 2006. 😉
000
Sebastian Shaw @millseba.bsky.social · 08/01/2026
Happy New Year!
010
Reposted by Sebastian Shaw
ParasitesRule @parasitesrule.org · 16/12/2025
🦠 Grad students & postdocs in parasitology: Apply now for the Biology of Parasitism (BoP): Modern Approaches course at @MBLScience. Hands-on labs, expert lectures, and cutting-edge tools. 📅 Summer 2026 | ⏰ Deadline Feb 5 🔗 mbl.edu/courses
01415
Sebastian Shaw @millseba.bsky.social · 15/12/2025
Awesome, congrats Simona et al.!
020
Sebastian Shaw @millseba.bsky.social · 29/11/2025
Sure, but at what cost? :-(
100
Sebastian Shaw @millseba.bsky.social · 29/11/2025
Why is this sentence in past tense 😉
000
Sebastian Shaw @millseba.bsky.social · 29/11/2025
Congratulations 🎉
000
Reposted by Sebastian Shaw
Shubha Bevkal @shubhabevkal.bsky.social · 26/11/2025
New paper out ! Want to learn more about fascinating proteasome biology and Artemisinin resistance in Malaria parasites ? Check out our preprint: www.biorxiv.org/content/10.1...
biorxiv.org
Stage-specific regulation of the Plasmodium falciparum proteasome activity reveals adaptive rewiring in artemisinin resistance
The ubiquitin-proteasome system (UPS) is essential for Plasmodium falciparum to maintain protein homeostasis, adapt to proteotoxic stress, and regulate parasite growth and stage transitions. The prote...
052
Reposted by Sebastian Shaw
Akshay Vishwanatha @akshayv.bsky.social · 26/11/2025
Publication alert! 🔔 Our recent work exploring how Plasmodium uses a Rad51 independent homologous recombination to diversify its var gene repertoire is now published in 🧬 Nucleic Acids Research! @oupprimary.bsky.social @narjournal.bsky.social Read more here. tinyurl.com/794brb6h
tinyurl.com
Validate User
064
Sebastian Shaw @millseba.bsky.social · 21/11/2025
Repost for World #AMR Awareness Week. #AntimicrobialResistance ➡️ www.biorxiv.org/content/10.1...
biorxiv.org
000
Sebastian Shaw @millseba.bsky.social · 06/11/2025
I guess that would answer the question whether there are more eyes or legs on our planet.
000
Sebastian Shaw @millseba.bsky.social · 02/11/2025
3, 2 and then 1
140
Sebastian Shaw @millseba.bsky.social · 31/10/2025
Finally, huge thanks to the @snsf.ch for believing in this journey — from postdoc to PI. Can’t wait to build the lab, the science, and the next generation of parasite biologists.
#Parasitology #SNSF #AcademicLife #Cryptosporidium #Science #parasitesrule
020
Sebastian Shaw @millseba.bsky.social · 31/10/2025
And heartfelt thanks to Isabel Roditi, whose mentorship has guided me for years.
She also made it possible for me to attend the Biology of Parasitism course at Woods Hole, an experience that changed my academic career in an indescribable way.
140
Sebastian Shaw @millseba.bsky.social · 31/10/2025
Grateful to all mentors, peers, friends, and family who supported me — especially my wife, Natalie. ❤️ Special thanks to @striepenlab.bsky.social, for freedom, trust, and inspiration at @upenn.edu. 
One lasting lesson: admire what worked before worrying about what didn’t.
130
Sebastian Shaw @millseba.bsky.social · 31/10/2025
My future lab will study the genetic and transcriptional basis of parasite virulence and persistence in #Cryptosporidium, with a sprinkle of new tool development along the way.
120
Sebastian Shaw @millseba.bsky.social · 31/10/2025
Exciting news!!
I’ve been awarded an #SNSFStartingGrant and will join the Institute of Parasitology, University of Zurich as an Assistant Professor in summer 2026.
A dream come true! 🥺
4423
Reposted by Sebastian Shaw
Swiss National Science Foundation (SNSF) @snsf.ch · 31/10/2025
✨ Searching for extraterrestrial life or combating speech disorders: The SNSF is awarding #SNSFStartingGrants to 41 outstanding researchers. They will receive a maximum of CHF 1 million to lead a project with their own #research team at a Swiss university. 🚀 ℹ️ sohub.io/aq26
1143
Sebastian Shaw @millseba.bsky.social · 25/10/2025
Beautiful! Congratulations!
110
Sebastian Shaw @millseba.bsky.social · 21/10/2025
Es ist sozusagen unbegreiflich.
010
Reposted by Sebastian Shaw
Cryptosporidium Meeting UK 2026 @cryptouk26.bsky.social · 13/10/2025
Save the date, next Cryptosporidium meeting in Edinburgh May 24-26, 2026. Register for email updates via the QR code below.
112