Maryse Lebrun
@lebrunlab.bsky.social
Scientist interested in host pathogen interactions
Reposted by Maryse Lebrun
The #EMBOWorkshop : Host–parasite relationship has come to a close! Thank you to all speakers, participants, and organizers for four inspiring days of science, discussion, and human connection. Until next time! 🧫✨
October 8, 2025 at 11:32 AM
The #EMBOWorkshop : Host–parasite relationship has come to a close! Thank you to all speakers, participants, and organizers for four inspiring days of science, discussion, and human connection. Until next time! 🧫✨
Reposted by Maryse Lebrun
Registration and Abstract submission for MPMXXXVI are now open! Abstract submission deadline is June 27th, get yours in quickly. @rmc9z.bsky.social @mjgubbels.bsky.social @omarharb.org
🔗https://www.parasitesrule.com/mpm-xxxvi
🔗https://www.parasitesrule.com/mpm-xxxvi
June 5, 2025 at 1:51 PM
Registration and Abstract submission for MPMXXXVI are now open! Abstract submission deadline is June 27th, get yours in quickly. @rmc9z.bsky.social @mjgubbels.bsky.social @omarharb.org
🔗https://www.parasitesrule.com/mpm-xxxvi
🔗https://www.parasitesrule.com/mpm-xxxvi
Reposted by Maryse Lebrun
🦠 The plague bacillus became less virulent, extending the duration of two major pandemics. @yersiniaunit.bsky.social @pierrelebury.bsky.social @mcmasteruniversity.bsky.social @ravneetksidhu.bsky.social
The plague bacillus became less virulent, prolonging the duration of two major pandemics
Scientists at the Institut Pasteur and McMaster University have discovered that the evolution of a gene in the bacterium that causes bubonic plague, Yersinia pestis, may have prolonged the duration of...
www.pasteur.fr
June 2, 2025 at 2:42 PM
🦠 The plague bacillus became less virulent, extending the duration of two major pandemics. @yersiniaunit.bsky.social @pierrelebury.bsky.social @mcmasteruniversity.bsky.social @ravneetksidhu.bsky.social
It was a great success. See you next time!
And it’s a wrap on #EESInfection! ✨🦠
Huge thanks to all participants, speakers, and organisers who made it a success. Can’t wait for next time!
🏅👏 Congrats to our 5 poster prize winners for their fantastic work!
Stay updated ➡️ embl.org/events/
Huge thanks to all participants, speakers, and organisers who made it a success. Can’t wait for next time!
🏅👏 Congrats to our 5 poster prize winners for their fantastic work!
Stay updated ➡️ embl.org/events/
May 29, 2025 at 1:24 PM
It was a great success. See you next time!
One of my new fascinations following #EESInfection talks - Rhoptry-mediated secretion - seems almost like a eukaryotic version of TTSS?
www.embopress.org/doi/full/10....
www.embopress.org/doi/full/10....
An apical membrane complex for triggering rhoptry exocytosis and invasion in Toxoplasma | The EMBO Journal
image image Surface‐exposed cysteine repeat modular proteins (CRMPs) are required for the Plasmodium
parasite targeting the mosquito salivary gland. Here, CRMPs are shown to be essential
for rhoptry ...
www.embopress.org
May 29, 2025 at 1:21 PM
Reposted by Maryse Lebrun
Excited to share our new @science.org paper! Led by postdocs Ruchao Peng and Xin Xu, we used cryo-EM/ET to reveal the influenza ribonucleoprotein complex structure and its strand-sliding mechanism for RNA synthesis, paving the way for new antivirals.
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
Molecular basis of influenza ribonucleoprotein complex assembly and processive RNA synthesis
Influenza viruses replicate and transcribe their genome in the context of a conserved ribonucleoprotein (RNP) complex. By integrating cryo–electron microscopy single-particle analysis and cryo–electro...
www.science.org
May 15, 2025 at 7:51 PM
Excited to share our new @science.org paper! Led by postdocs Ruchao Peng and Xin Xu, we used cryo-EM/ET to reveal the influenza ribonucleoprotein complex structure and its strand-sliding mechanism for RNA synthesis, paving the way for new antivirals.
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
Reposted by Maryse Lebrun
📢 Big Announcement: Registration & abstract submission open for EMBO Workshop "Host-Parasite Relationship: From Mechanisms to Control Strategies" organized by ParaFrap @parafrap.bsky.social @embo.org
🗓️ 5-8 Oct 2025 - Les Embiez Island-France
🔚Deadline: 15 Jul 2025 meetings.embo.org/event/25-hos...
🗓️ 5-8 Oct 2025 - Les Embiez Island-France
🔚Deadline: 15 Jul 2025 meetings.embo.org/event/25-hos...
May 14, 2025 at 7:37 AM
📢 Big Announcement: Registration & abstract submission open for EMBO Workshop "Host-Parasite Relationship: From Mechanisms to Control Strategies" organized by ParaFrap @parafrap.bsky.social @embo.org
🗓️ 5-8 Oct 2025 - Les Embiez Island-France
🔚Deadline: 15 Jul 2025 meetings.embo.org/event/25-hos...
🗓️ 5-8 Oct 2025 - Les Embiez Island-France
🔚Deadline: 15 Jul 2025 meetings.embo.org/event/25-hos...
Reposted by Maryse Lebrun
Keep VEuPathDB open-access to all by subscribing today! veupathdb.org/veupathdb/ap...
April 21, 2025 at 2:58 PM
Keep VEuPathDB open-access to all by subscribing today! veupathdb.org/veupathdb/ap...
Reposted by Maryse Lebrun
A humorous reflection on the first article from my stellar PhD student, Belen Pachano.
communities.springernature.com/posts/open-s...
communities.springernature.com/posts/open-s...
Open Sesame: The Protein Behind Parasite Stage Switching
communities.springernature.com
April 11, 2025 at 2:59 PM
A humorous reflection on the first article from my stellar PhD student, Belen Pachano.
communities.springernature.com/posts/open-s...
communities.springernature.com/posts/open-s...
Reposted by Maryse Lebrun
Thrilled to share my first paper, now out in
@natmicrobiol.nature.com! Huge thanks to my amazing supervisor @hakimi.bsky.social and everyone who contributed to this work!
www.nature.com/articles/s41...
@natmicrobiol.nature.com! Huge thanks to my amazing supervisor @hakimi.bsky.social and everyone who contributed to this work!
www.nature.com/articles/s41...
An ISWI-related chromatin remodeller regulates stage-specific gene expression in Toxoplasma gondii - Nature Microbiology
Toxoplasma gondii evolved two ISWI remodellers, TgSNF2h and TgSNF2L. TgSNF2h forms a complex that insulates active genes, regulates MORC-driven sexual commitment and ensures precise gene expression, s...
www.nature.com
April 13, 2025 at 11:03 AM
Thrilled to share my first paper, now out in
@natmicrobiol.nature.com! Huge thanks to my amazing supervisor @hakimi.bsky.social and everyone who contributed to this work!
www.nature.com/articles/s41...
@natmicrobiol.nature.com! Huge thanks to my amazing supervisor @hakimi.bsky.social and everyone who contributed to this work!
www.nature.com/articles/s41...
Reposted by Maryse Lebrun
The Roland A. Cooper Award was established in 2024 to support parasitologists from endemic areas to attend international parasitology conferences. Your generous contribution, no matter the size, will have an immediate impact. www.socapar.org/home/donate
April 3, 2025 at 2:27 PM
The Roland A. Cooper Award was established in 2024 to support parasitologists from endemic areas to attend international parasitology conferences. Your generous contribution, no matter the size, will have an immediate impact. www.socapar.org/home/donate
Reposted by Maryse Lebrun
📣Next ParaFrap Webinar: Mauld LAMARQUE (Team Maryse Lebrun) @umontpellier.bsky.social : "Pleiotropic role of the malaria parasite PP1 phosphatase during P. falciparum life cycle" @parafrap.bsky.social
Chairperson: Maryse Lebrun @lebrunlab.bsky.social
🗓️ March 13, 3pm CET
🎟️ bit.ly/ParaFrapWeb
Chairperson: Maryse Lebrun @lebrunlab.bsky.social
🗓️ March 13, 3pm CET
🎟️ bit.ly/ParaFrapWeb
March 10, 2025 at 9:18 AM
📣Next ParaFrap Webinar: Mauld LAMARQUE (Team Maryse Lebrun) @umontpellier.bsky.social : "Pleiotropic role of the malaria parasite PP1 phosphatase during P. falciparum life cycle" @parafrap.bsky.social
Chairperson: Maryse Lebrun @lebrunlab.bsky.social
🗓️ March 13, 3pm CET
🎟️ bit.ly/ParaFrapWeb
Chairperson: Maryse Lebrun @lebrunlab.bsky.social
🗓️ March 13, 3pm CET
🎟️ bit.ly/ParaFrapWeb
Reposted by Maryse Lebrun
March 8, 2025 at 10:20 AM
Reposted by Maryse Lebrun
Cryptosporidium modifies intestinal microvilli through an
exported virulence factor!! Phenomenal work from the newly DR’ed Elena Rodrigues
www.biorxiv.org/content/10.1...
exported virulence factor!! Phenomenal work from the newly DR’ed Elena Rodrigues
www.biorxiv.org/content/10.1...
Cryptosporidium modifies intestinal microvilli through an exported virulence factor
Cryptosporidium is a common intestinal infection of vertebrates and a significant threat to public health. Within the epithelial layer of the intestine, the parasite invades and replicates. Infected cells are readily detected under the microscope by the presence of elongated microvilli, particularly around the vacuole where the parasite resides. Here, we identify a family of Cryptosporidium virulence factors that are exported into the host cell during infection and localise to the microvilli. We examine the trafficking and function of the most highly expressed family member, MVP1, which appears to control the elongation of microvilli through engagement of host EBP50 and CDC42. Remarkably, this mechanism closely mirrors that of an enteropathogenic Escherichia coli virulence factor, MAP, which is also known to drive host microvilli elongation during infection. This highlights a unique instance where eukaryotic and prokaryotic virulence factors have convergently evolved to modulate host actin structures through a similar mechanism. ### Competing Interest Statement The authors have declared no competing interest.
www.biorxiv.org
February 26, 2025 at 12:53 PM
Cryptosporidium modifies intestinal microvilli through an
exported virulence factor!! Phenomenal work from the newly DR’ed Elena Rodrigues
www.biorxiv.org/content/10.1...
exported virulence factor!! Phenomenal work from the newly DR’ed Elena Rodrigues
www.biorxiv.org/content/10.1...
Reposted by Maryse Lebrun
📅 Save the Date! The EMBO Workshop "Host-Parasite Relationship: From Mechanisms to Control Strategies" organized by @ParaFrap will take place on October 5-8, 2025, at Les Embiez Island. Stay updated on registration opening —enter your email here: coming-soon.embo.org/w25-83 #Science #Parasite
February 25, 2025 at 3:38 PM
📅 Save the Date! The EMBO Workshop "Host-Parasite Relationship: From Mechanisms to Control Strategies" organized by @ParaFrap will take place on October 5-8, 2025, at Les Embiez Island. Stay updated on registration opening —enter your email here: coming-soon.embo.org/w25-83 #Science #Parasite
Reposted by Maryse Lebrun
I wish I could send all of you out there a hug - witnessing second hand so much needless stress, uncertainty and suffering.
I see you and I stand with you.
I see you and I stand with you.
a black and white drawing of two people hugging with the words virtual hug below them .
Alt: a black and white drawing of two people hugging with the words virtual hug below them .
media.tenor.com
February 21, 2025 at 6:07 PM
I wish I could send all of you out there a hug - witnessing second hand so much needless stress, uncertainty and suffering.
I see you and I stand with you.
I see you and I stand with you.
Reposted by Maryse Lebrun
#PLOSPathogens: The #malaria parasite PP1 phosphatase controls the initiation of the egress pathway of asexual blood-stages by regulating the rounding-up of the vacuole dx.plos.org/10.1371/jour... @plos.org ParaFrap Teams: @lebrunlab.bsky.social @lavazeclab.bsky.social
The malaria parasite PP1 phosphatase controls the initiation of the egress pathway of asexual blood-stages by regulating the rounding-up of the vacuole
Author summary Malaria caused by Plasmodium falciparum infections remains a major human threat in endemic countries. Its proliferation within the host relies on the iteration of red blood cell invasio...
dx.plos.org
February 10, 2025 at 10:16 AM
#PLOSPathogens: The #malaria parasite PP1 phosphatase controls the initiation of the egress pathway of asexual blood-stages by regulating the rounding-up of the vacuole dx.plos.org/10.1371/jour... @plos.org ParaFrap Teams: @lebrunlab.bsky.social @lavazeclab.bsky.social
Reposted by Maryse Lebrun
Stoked to see the latest research from our lab now out in @plosbiology.org! Check it out to learn more about lineage-specific adaptations in the cytosolic iron-sulfur assembly pathway in Apicomplexa.
journals.plos.org/plosbiology/...
journals.plos.org/plosbiology/...
The HCF101 protein is an important component of the cytosolic iron–sulfur synthesis pathway in Toxoplasma gondii
Iron-sulfur proteins require specialized assembly pathways and play vital roles in cellular functions. This study shows that the plastid-derived protein HCF101 functions in the cytosolic Fe-S assembly...
journals.plos.org
February 7, 2025 at 7:22 AM
Stoked to see the latest research from our lab now out in @plosbiology.org! Check it out to learn more about lineage-specific adaptations in the cytosolic iron-sulfur assembly pathway in Apicomplexa.
journals.plos.org/plosbiology/...
journals.plos.org/plosbiology/...
Reposted by Maryse Lebrun
Iron-sulfur proteins require specialized assembly pathways. @s-besteiro.bsky.social &co show that the plastid-derived protein HCF101 functions in the cytosolic Fe-S assembly pathway in #Toxoplasma and is crucial for #parasite viability 🧪 @plosbiology.org plos.io/3EFKKoQ
February 7, 2025 at 6:19 PM
Iron-sulfur proteins require specialized assembly pathways. @s-besteiro.bsky.social &co show that the plastid-derived protein HCF101 functions in the cytosolic Fe-S assembly pathway in #Toxoplasma and is crucial for #parasite viability 🧪 @plosbiology.org plos.io/3EFKKoQ
Reposted by Maryse Lebrun
Do you work on parasites and reside in an LMIC? Consider applying for a 2025 MPM LMIC award. The deadline is March 3rd, 2025—details on the website.
www.parasitesrule.com/mpm-xxxvi/tr...
www.parasitesrule.com/mpm-xxxvi/tr...
Molecular Parasitology Community - Travelaward2025
Scroll down for the application form
www.parasitesrule.com
February 5, 2025 at 2:20 AM
Do you work on parasites and reside in an LMIC? Consider applying for a 2025 MPM LMIC award. The deadline is March 3rd, 2025—details on the website.
www.parasitesrule.com/mpm-xxxvi/tr...
www.parasitesrule.com/mpm-xxxvi/tr...
Reposted by Maryse Lebrun
📣 ParaFrap Webinar: Gretchen DIFFENDALL (Team A.Scherf @pasteur.fr): Metabolomics Identifies a Natural Host Cytoadhesion Inhibitor in Asymptomatic #Malaria Cases
@parafrap.bsky.social
Chairperson: Antoine CLAESSENS @ant1-claessens.bsky.social
🗓️ Thursday, February 13, 3pm CET
🎟️ bit.ly/ParaFrapWeb
@parafrap.bsky.social
Chairperson: Antoine CLAESSENS @ant1-claessens.bsky.social
🗓️ Thursday, February 13, 3pm CET
🎟️ bit.ly/ParaFrapWeb
February 4, 2025 at 3:07 PM
📣 ParaFrap Webinar: Gretchen DIFFENDALL (Team A.Scherf @pasteur.fr): Metabolomics Identifies a Natural Host Cytoadhesion Inhibitor in Asymptomatic #Malaria Cases
@parafrap.bsky.social
Chairperson: Antoine CLAESSENS @ant1-claessens.bsky.social
🗓️ Thursday, February 13, 3pm CET
🎟️ bit.ly/ParaFrapWeb
@parafrap.bsky.social
Chairperson: Antoine CLAESSENS @ant1-claessens.bsky.social
🗓️ Thursday, February 13, 3pm CET
🎟️ bit.ly/ParaFrapWeb
Reposted by Maryse Lebrun
Global Parasitology Seminar next Monday: Ira Blader on Toxoplasma & oxygen. 2/10/25 12 pm EST in person & zoom. @TrendsParasitol @BSPparasitology @parasitesrule @AmSocParasit @AS_Para @pennvet @SFParasitologie @CTEGD
February 3, 2025 at 2:23 PM
Global Parasitology Seminar next Monday: Ira Blader on Toxoplasma & oxygen. 2/10/25 12 pm EST in person & zoom. @TrendsParasitol @BSPparasitology @parasitesrule @AmSocParasit @AS_Para @pennvet @SFParasitologie @CTEGD
Reposted by Maryse Lebrun
Register! womeninmalaria.es/wim-conferen...
WiM Conference - Women in Malaria
womeninmalaria.es
January 29, 2025 at 6:26 AM
Register! womeninmalaria.es/wim-conferen...
Reposted by Maryse Lebrun
The MPM XXXVI page is now live. Sept 14th to Sept 18th. More updates will be coming soon. Check it out on the parasitesrule.com website. Organized this year by Richarch McCulloch @rmc9z.bsky.social, Photini Sinnis, Marc-Jan Gubbels, Deepali Ravel & Omar Harb @omarharb.bsky.social
Molecular Parasitology Community
The MPM XXXVI website is now online
parasitesrule.com
January 21, 2025 at 4:47 PM
The MPM XXXVI page is now live. Sept 14th to Sept 18th. More updates will be coming soon. Check it out on the parasitesrule.com website. Organized this year by Richarch McCulloch @rmc9z.bsky.social, Photini Sinnis, Marc-Jan Gubbels, Deepali Ravel & Omar Harb @omarharb.bsky.social
Reposted by Maryse Lebrun
First Global Parasitology Seminar of 2025: Nathan Schmidt on Malaria & Microbiome. Monday 01/27 12 pm US EST. @womeninmalaria @BSPparasitology @FightingMalaria @AmSocParasit @UPenn_I3H @MBLBoP
January 23, 2025 at 4:15 PM
First Global Parasitology Seminar of 2025: Nathan Schmidt on Malaria & Microbiome. Monday 01/27 12 pm US EST. @womeninmalaria @BSPparasitology @FightingMalaria @AmSocParasit @UPenn_I3H @MBLBoP