Programme
ClostPath 2025
September 1-4, 2025
Institut Pasteur, Paris, France
 
Monday, September 1, 2025
Young Scientist Meeting with Coffee Break
2.00 pm-6.00 pm
Welcome words from Patrick Trieu-Cuot, Director of Scientific Affairs, and Michel Popoff
6.00 pm-6.15 pm
Opening Keynote
6.15 pm-7.15 pm
1
6.15 pm

New perspectives on Clostridioides difficile infection: host dynamics and disease risk

Dena Lyras
Infection and Immunity Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, Australia
''Aperitif'' and Early Welcome Dinner
7.15 pm-9.00 pm
Tuesday, September 2, 2025
Welcome coffee
08.30 am-09.00 am
Session 1: One Health
09.00 am-10.30 am
Chairs: Eliane De Oliveira Ferreira, Universidade Federal Do Rio de Janeiro, Brazil - Christina Tran, Anses, France
2
09.00 am

Environmental niches and transmission dynamics of Clostridioides difficile: an underestimated One Health Dimension

Maja Rupnik
National Laboratory for Health, Environment and Food, Maribor, Slovenia University of Maribor, Faculty of Medicine, Maribor, Slovenia
3
09.30 am

Botulism outbreaks in livestock and wildlife: Assessing public health risks through a One Health approach

Caroline Le Maréchal
Unité HQPAP, Laboratory of Ploufragan-Plouzané-Niort, ANSES, Ploufragan, France
4
09.50 am

Comparing the severity of Clostridium perfringens-induced gas gangrene in normal vs. diabetic mice

Francisco Uzal
University of California-Davis, San Bernardino, United States
5
10.10 am

Potency test of the first commercial vaccine for prevention of Clostridioides difficile infection in piglets

Rodrigo Otávio Silva
Federal University of Minas Gerais (Brasil), Belo Horizonte, Brazil
Coffee Break
10.30 am-11.00 am
Session 2: Microbiota
11.00 am-1.00 pm
Chairs: Aimee Shen, Tufts University School of Medicine, United States - Afi Akofa Diane Sapa, Micalis Institute, Université Paris Saclay, France
6
11.00 am

Unraveling the complexities of Clostridioides difficile and Clostridium perfringens Infections: toxigenic profiles and microbiome disruption in latin America

Marina Munoz
Instituto de Biotecnología- UN (IBUN), Universidad Nacional de Colombia, Bogotá, Colombia Centro de Investigaciones en Microbiología y Biotecnología – UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
7
11.30 am

Enterococcus faecalis alters phase variation in Clostridioides difficile

Ashley Weiss
Division of Protective Immunity, Children's Hospital of Philadelphia, Philadelphia, United States
8
11.50 am

A sugar-rich diet promotes Clostridioides difficile carriage without prior antibiotics and significantly exacerbates both acute disease and long-term colonization

Daniel Erickson
Microbiology & Immunology, University of Louisville, Louisville, United States
9
12.10 pm

Bacteroides spp impact Clostridioides difficile growth and toxin production in dual species biofilms

Meera Unnikrishnan
University of Warwick, Coventry, United Kingdom
10
12.30 pm

Genomic and virulence traits associated with preterm infant-derived Clostridium perfringens strains

Raymond Kiu
University of Birmingham, Department of Microbes, Infection and Microbiomes, College of Medicine and Health, United Kingdom
Lunch
1.00 pm-2.30 pm
Session 3: Phage & surface
2.30 pm-4.20 pm
Chairs: Paula Salgado, Newcastle University, Newcastle Upon Tyne,, United Kingdom - Anirudh Jakhmola, University of Sheffield, United Kingdom
11
2.30 pm

Controlling phage–Host dynamics: safeguarding beneficial bacteria and targeting pathogens

Louis-Charles Fortier
Department of Microbiology and Infectious Diseases, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, Canada
12
3.00 pm

PSII, S-layer pillars is essential for Clostridioides difficile life

Léa Huet
BaPS, Institut Micalis, Université Paris-Saclay, INRAE, AgroParisTech, Jouy-En-Josas, France
13
3.20 pm

Dissecting the biosynthetic pathway of the flagellin Type A glycan in Clostridioides difficile strain 630Δerm

Paul Hensbergen
Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, The Netherlands
14
3.40 pm

Extreme structural diversification of the C. difficile S-layer exoskeletons

Anna Barwinska-Sendra
Medical School, Biosciences Institute, Newcastle University, Newcastle Upon Tyne, United Kingdom
15
4.00 pm

An unusual mechanism of action of β-lactam antibiotics in Clostridioides difficile

Johann Peltier
Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-Sur-Yvette, France
Coffee Break (Group photo)
4.20 pm-5.00 pm
Posters Session I
5.00 pm-7.00 pm
Dinner on your own
7.00 pm-10.00 pm
Wednesday, September 3, 2025
Welcome coffee
08.30 am-09.00 am
Session 4: Toxins
09.00 am-10.50 am
Chairs: Andreas Rummel, Hannover Medical School, Germany - Shannon Kordus, Vanderbilt University Medical Center, United States
16
09.00 am

Botulinum neurotoxins: a distinct subclass of SNARE-cleaving endopeptidases

Sabine Pellett
University of Wisconsin, Department of Bacteriology, Madison, United States
17
09.30 am

Botulinum neurotoxins exploit host digestive proteases to boost their oral toxicity via activating OrfXs/P47

Rongsheng Jin
School of Medicine, University of California, Irvine, Irvine, United States
18
09.50 am

Structural basis of C. difficile TcdB toxin inhibition by intestinal bile acids informs design of a therapeutic antitoxin

Roman Melnyk
University of Toronto, Toronto, Canada
19
10.10 am

Clostridial hemolysin beta-pore-forming toxins find their receptors

Jan Franzen
Department of Infectious Diseases and Pathobiology, Institute of Animal Pathology, Posthaus Lab, University of Bern, Bern, Switzerland Graduate School for Cellular and Biomedical Sciences, Bern, Switzerland
20
10.30 am

Intestinal low dose of botulinum neurotoxins facilitate infection by Salmonella and Shigella

Ornella Rossetto
Biomedical Sciences, University of Padova, Padova, Italy Institute of Neuroscience, National Research Council, Padova, Italy
Coffee Break
10.50 am-11.20 am
Session 5: Host response to infection
11.20 am-1.10 pm
Chairs: Michael Abt, University of Pennsylvania, United States - Aurélie Lotoux, Institut Pasteur Paris, France
21
11.20 am

Type 2 Immunity Protection from C. difficile Infection

William Petri
University of Virginia, Charlottesville, United States
22
11.50 am

Spatial transcriptomic landscape of the colon repairing from Clostridioides difficile infection

Ashleigh Rogers
Department of Microbiology, Monash University, Clayton, Australia Infection and Immunity Program, Monash University, Clayton, Australia
23
12.10 pm

An in vivo genetic selection identifies Clostridioides difficile gene products targeted by the host immune response

Sarah Price
Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, United States Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee, United States
24
12.30 pm

Potentially therapeutic antibodies are encoded by the C. difficile infection-induced human memory B cell compartment despite the predominance of non-protective antibodies

Sydney Honold
University of Oklahoma Health Sciences Center, Oklahoma City, United States
25
12.50 pm

FMT promotes type 2 mucosal immune responses with colonic epithelium proliferation in recurrent CDI patients

G. Brett Moreau
Infectious Diseases and International Health, University of Virginia, Charlottesville, United States
Lunch
1.10 pm-2.30 pm
Planned Activities / Free time / Dinner on your own
2.30 pm-11.00 pm
Thursday, September 4, 2025
Welcome coffee
08.30 am-09.00 am
Shimizu Lecture
09.00 am-09.15 am
Speaker: Bruce McClane, University of Pittsburgh, United States
Session 6: Regulation
09.15 am-10.45 am
Chairs: Franziska Faber, University of Würzburg, Germany - Martin Douglass, Vanderbilt University Medical Center, United States
26
09.15 am

The complex regulatory network controlling Clostridioides difficile infectious cycle in response to oxidative stress

Isabelle Martin-Verstraete
Institut Pasteur, Université Paris Cité, UMR CNRS 6047, Laboratoire Pathogenèse des Bactéries Anaérobies, Paris, France
27
09.45 am

Cracking the mechanism of EndoM: how it degrades small RNA and controls sporulation initiation in Clostridioides difficile

Diogo Martins
ITQB NOVA, Oeiras, Portugal
28
10.05 am

Flagella and toxins reduce Clostridioides difficile fitness in an inflammation-dependent manner

Nicole Gadda
Microbiology & Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, United States
29
10.25 am

BrnQ branched-chain amino acid transporters affect toxin production of Clostridium perfringens gas gangrene type A strain ATCC3624

Jihong Li
Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, United States
Coffee Break
10.45 am-11.15 am
Session 7: Physiology
11.15 am-12.45 pm
Chairs: Stephen Melville, Virginia Tech, United States - Valerija Parthala, University of Hertofrdshire, United Kingdom
30
11.15 am

A conserved switch controls virulence, sporulation, and motility in C. difficile

Shonna McBride
Department of Microbiology and Immunology, Emory University School of Medicine, Emory Antibiotic Resistance Center, Atlanta, United States
31
11.45 am

Surface-driven physiological adaptations promote Clostridioides difficile colonization

Po-Long Hsiao
Institute of Bioengineering and Global Health Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
32
12.05 pm

90 years of Stickland reaction: How clostridial amino acid reductases obtain their pyruvoyl cofactor

Wulf Blankenfeldt
Structure and Function of Proteins, Helmholtz Centre for Infection Research, Braunschweig, Germany
33
12.25 pm

Gut mucin fucosylation dictates the entry of botulinum toxin complexes

Takuhiro Matsumura
Department of Bacteriology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
Lunch & Poster Session II
12.45 pm-3.00 pm
Session 8: Spore
3.00 pm-4.30 pm
Chairs: Adriano O. Henriques, ITQB NOVA, Portugal - Abigail Roberts, University of Sheffield, United Kingdom
34
3.00 pm

Spores in contrast: stereoflexible and bile-driven germination in Clostridium

Ian Cheong
Temasek Life Sciences Laboratory, National University of Singapore, Singapore, Singapore
35
3.30 pm

Inter-species contact-dependent suppression of Clostridioides difficile sporulation requires Enterococcus pili

Alicia Wood
Binghamton University, Binghamton, United States
36
3.50 pm

A plasmid-encoded protein modulates sporulation in Paraclostridium sordellii

Sarah Revitt-Mills
Infection and Immunity Program, Monash Biomedicine Discovery Institute and Department of Microbiology, Monash University, Clayton, Australia
37
4.10 pm

Strand swapping in the LolA-like protein GerS promotes CwlD amidase activity and spore germination in Clostridioides difficile

Jacob Bouchier
Molecular Biology and Microbiology, Tufts University, Boston, United States
Coffee Break
4.30 pm-5.00 pm
Session 9: Clinical
5.00 pm-6.25 pm
Chairs: Julian Hurdle, Texas A&M Health Science Center, United States - Houdaii Khalil, Monash University, Australia
38
5.00 pm

Human Gut Microbiome Resiliency Vs Oral Antibiotics

Kevin Garey
University of Houston College of Pharmacy, Houston, United States
39
5.30 pm

The Receptor binding domain 2 (RBD2) of binary toxin (CDT) as a promising vaccine candidate protects both mice and hamsters against CDI challenge

Xingmin Sun
Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, United States
40
5.50 pm

Mucosal vaccination of inactivated Clostridioides difficile toxins and novel surface antigens clears colonization and promotes host survival

Audrey Thomas
Department of Pathology, Microbiology, & Immunology, Vanderbilt University Medical Center, Nashville, United States Microbe-Host Interactions PhD Program, Vanderbilt University, Nashville, United States
41
6.10 pm

An overview of the incidence of C. difficile infection around the world, with a focus on France

Jennifer Moisi
Pfizer, United States
Closing of the meeting
6.30 pm-6.40 pm
Congress Dinner (Meeting point : 2 port Debilly, 75016 Paris)
7.45 pm-11.59 pm


 

 

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