Ascel Regis SAMBA LOUAKA

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Publications

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Combating resilient Acanthamoeba castellanii cysts: Ultrasonic frequency-dependent effects on viability and excystment

Prince Nana Amaniampong , Ascel Samba-Louaka

Ultrasonics Sonochemistry, 2026, 124 (107695), ⟨10.1016/j.ultsonch.2025.107695⟩

Article dans une revue hal-05396712v1
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Extensive environmental survey of free-living amoebae and their elusive association with Mycobacterium bovis or Mycobacterium avium subsp. paratuberculosis

Amélie Jessu , Thierry Cochard , Mélanie Burtin , Stéphanie Crapart , Vincent Delafont et al.

FEMS Microbiology Ecology, 2025, 101 (1), pp.fiae164. ⟨10.1093/femsec/fiae164⟩

Article dans une revue hal-04891776v1
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Legionella pneumophila subverts the antioxidant defenses of its amoeba host Acanthamoeba castellanii

Alban Hay , Willy Aucher , Romain Pigeault , Joanne Bertaux , Alexandre Crépin et al.

Current Research in Microbial Sciences, 2025, 8, pp.100338. ⟨10.1016/j.crmicr.2024.100338⟩

Article dans une revue hal-04884037v1
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Encystment and Excystment Processes in <i>Acanthamoeba castellanii</i>: An Emphasis on Cellulose Involvement

Mathew Choaji , Ascel Samba-Louaka , Zineb Fechtali-Moute , Willy Aucher , Sébastien Pomel

Pathogens, 2025, 14, ⟨10.3390/pathogens14030268⟩

Article dans une revue hal-04988818v1
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Characterization of novel extracellular proteases produced by Acanthamoeba castellanii after contact with human corneal epithelial cells and their relevance to pathogenesis

Alvie Loufouma-Mbouaka , Tania Martín-Pérez , Martina Köhsler , Zeynep Danisman , Maya Schwarz et al.

Parasites & Vectors, 2024, 17 (1), pp.242. ⟨10.1186/s13071-024-06304-7⟩

Article dans une revue hal-05501373v1
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Metagenomic data from gutter water in the city of Pointe-Noire, Republic of Congo

Bouziane Moumen , Céline Samba-Louaka , Victoire Aubierge Matondo Kimpamboudi , Anicet Magloire Boumba , Hervé Sabin Ngoma et al.

Data in Brief, 2024, 55, pp.110655. ⟨10.1016/j.dib.2024.110655⟩

Article dans une revue hal-04632769v1
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Editorial: new advances in the biology and pathogenesis of free-living amoebae

Isabel Marcelino , Ascel Samba-Louaka , Christopher A Rice

Frontiers in Microbiology, 2024, ⟨10.3389/fmicb.2024.1401217⟩

Article dans une revue hal-04583924v1
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Encystment of Free-Living Amoebae, So Many Blind Spots to Cover

Ascel Samba-Louaka

Parasitologia, 2023, 3 (1), pp.53-58. ⟨10.3390/parasitologia3010007⟩

Article dans une revue hal-04075904v1
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Characterization of Rosculus vilicus sp. nov., a rhizarian amoeba interacting with Mycobacterium avium subsp. paratuberculosis

Amélie Jessu , Vincent Delafont , Jean-Louis Moyen , Franck Biet , Ascel Samba-Louaka et al.

Frontiers in Microbiology, 2023, 14, pp.1324985. ⟨10.3389/fmicb.2023.1324985⟩

Article dans une revue hal-04411548v1
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Proteomic analysis of Acanthamoeba castellanii response to Legionella pneumophila infection

Alban Hay , Steven Rolland , Clement Bernard , Yann Héchard , Romain Villéger et al.

FEMS Microbiology Letters, 2023, ⟨10.1093/femsle/fnad086⟩

Article dans une revue hal-04218559v1
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Encystation and Stress Responses under the Control of Ubiquitin-like Proteins in Pathogenic Amoebae

Ascel Samba-Louaka , Elisabeth Labruyère , Mariette Matondo , Marie Locard-Paulet , Jean-Christophe Olivo-Marin et al.

Microorganisms, 2023, 11 (11), pp.2670. ⟨10.3390/microorganisms11112670⟩

Article dans une revue hal-04612504v1
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Legionella pneumophila Presence in Dental Unit Waterlines: A Cultural and Molecular Investigation in the West Bank, Palestine

Ashraf R Zayed , Mutasem Burghal , Suha Butmeh , Ascel Samba-Louaka , Michael Steinert et al.

Tropical Medicine and Infectious Disease, 2023, 8, ⟨10.3390/tropicalmed8110490⟩

Article dans une revue hal-04268539v1
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A time-resolved multi-omics atlas of Acanthamoeba castellanii encystment

Clément Bernard , Marie Locard-Paulet , Cyril Noël , Magalie Duchateau , Quentin Giai Gianetto et al.

Nature Communications, 2022, 13 (1), pp.4104. ⟨10.1038/s41467-022-31832-0⟩

Article dans une revue hal-03728227v1
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Isolation and Genome Analysis of an Amoeba-Associated Bacterium Dyella terrae Strain Ely Copper Mine From Acid Rock Drainage in Vermont, United States

Lesley-Ann Giddings , Kevin Kunstman , Bouziane Moumen , Laurent Asiama , Stefan Green et al.

Frontiers in Microbiology, 2022, 13, pp.856908. ⟨10.3389/fmicb.2022.856908⟩

Article dans une revue hal-03720628v1
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Time for African youth in science

Mandingha Kosso Etoka-Beka , Ascel Samba-Louaka

Acta Tropica, 2022, 226, pp.106270. ⟨10.1016/j.actatropica.2021.106270⟩

Article dans une revue hal-03720615v1
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Amoebae as Targets for Toxins or Effectors Secreted by Mammalian Pathogens

Ascel Samba-Louaka

Toxins, 2021, 13, ⟨10.3390/toxins13080526⟩

Article dans une revue hal-03327821v1
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Encystment Induces Down-Regulation of an Acetyltransferase-Like Gene in Acanthamoeba castellanii

Steven Rolland , Luce Mengue , Cyril Noël , Stéphanie Crapart , Anne Mercier et al.

Pathogens, 2020, 9 (5), 321 (12p.). ⟨10.3390/pathogens9050321⟩

Article dans une revue hal-04202566v1

Delayed cytokinesis generates multinuclearity and potential advantages in the amoeba Acanthamoeba castellanii Neff strain

Théo Quinet , Ascel Samba-Louaka , Yann Héchard , Karine van Doninck , Charles van der Henst

Scientific Reports, 2020, 10 (1), pp.12109. ⟨10.1038/s41598-020-68694-9⟩

Article dans une revue hal-05400325v1
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The crustacean Armadillidium vulgare (Latreille, 1804) (Isopoda: Oniscoidea), a new promising model for the study of cellular senescence

Charlotte Depeux , Ascel Samba-Louaka , Thomas Becking , Christine Braquart-Varnier , Jérôme Moreau et al.

Journal of Crustacean Biology, 2020, 40 (2), pp.194-199. ⟨10.1093/jcbiol/ruaa004⟩

Article dans une revue hal-03060295v1

Free-living amoebae and squatters in the wild: ecological and molecular features

Ascel Samba-Louaka , Vincent Delafont , Marie-Hélène Rodier , Estelle Cateau , Yann Héchard

FEMS Microbiology Reviews, 2019, 43 (4), pp.415-434. ⟨10.1093/femsre/fuz011⟩

Article dans une revue hal-05044418v1
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Legionella pneumophila -induced cell death: Two hosts, two responses

Ascel Samba-Louaka

Virulence, 2018, 9 (1), pp.17-19. ⟨10.1080/21505594.2017.1384527⟩

Article dans une revue hal-01724146v1
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Environmental Mycobacterium avium subsp. paratuberculosis Hosted by Free-Living Amoebae

Ascel Samba-Louaka , Etienne Robino , Thierry Cochard , Maxime Branger , Vincent Delafont et al.

Frontiers in Cellular and Infection Microbiology, 2018, 8, pp.1-7. ⟨10.3389/fcimb.2018.00028⟩

Article dans une revue hal-01705081v1
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Mycobacterium llatzerense, a waterborne Mycobacterium, that resists phagocytosis by Acanthamoeba castellanii

Vincent Delafont , Ascel Samba-Louaka , Emmanuelle Cambau , Didier Bouchon , Laurent Moulin et al.

Scientific Reports, 2017, 7, pp.46270. ⟨10.1038/srep46270⟩

Article dans une revue hal-01504796v1

Legionella pneumophila decreases velocity of Acanthamoeba castellanii

Luce Mengue , Freddie-Jeanne Richard , Yves Caubet , Steven Rolland , Yann Héchard et al.

Experimental Parasitology, 2017, ⟨10.1016/j.exppara.2017.07.013⟩

Article dans une revue hal-01651847v1

Identification of Atg8 from Acanthamoeba castellanii by genetic complementation in Saccharomyces cerevisiae.

Matthieu Régnacq , Pierre Voisin , Yann Héchard , Thierry Bergès , Christine Braquart-Varnier et al.

Molecular and Biochemical Parasitology, 2016, 210 (1-2), pp.55-57. ⟨10.1016/j.molbiopara.2016.08.006⟩

Article dans une revue istex hal-01427910v1
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Legionella pneumophila prevents proliferation of its natural host Acanthamoeba castellanii.

Luce Mengue , Matthieu Régnacq , Willy Aucher , Emilie Portier , Yann Héchard et al.

Scientific Reports, 2016, 6 (1), pp.36448. ⟨10.1038/srep36448⟩

Article dans une revue hal-01437135v1

Shedding light on microbial dark matter: a TM6 bacterium as natural endosymbiont of a free-living amoeba.

Vincent Delafont , Ascel Samba-Louaka , Didier Bouchon , Laurent Moulin , Yann Héchard

Environmental Microbiology Reports, 2015, 7 (6), pp.970-8. ⟨10.1111/1758-2229.12343⟩

Article dans une revue istex hal-01427409v1
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Listeria monocytogenes Dampens the DNA Damage Response

Ascel Samba-Louaka , Jorge Pereira , Marie-Anne Nahori , Veronique Villiers , Ludovic Deriano et al.

PLoS Pathogens, 2014, 10 (10), pp.e1004470. ⟨10.1371/journal.ppat.1004470⟩

Article dans une revue pasteur-01078553v1
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<em>Escherichia coli</em> producing colibactin triggers premature and transmissible senescence in mammalian cells

Thomas Secher , Ascel Samba Louaka , Eric Oswald , Jean-Philippe Nougayrède

PLoS ONE, 2013, 8 (10), ⟨10.1371/journal.pone.0077157⟩

Article dans une revue hal-02646496v1

Role for Telomerase in Listeria monocytogenes Infection

Ascel Samba-Louaka , Fabrizia Stavru , Pascale Cossart

Infection and Immunity, 2012, 80 (12), pp.4257 - 4263. ⟨10.1128/IAI.00614-12⟩

Article dans une revue hal-02645152v1
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Recruitment of the Major Vault Protein by InlK: A Listeria monocytogenes Strategy to Avoid Autophagy

Laurent Dortet , Serge Mostowy , Ascel Samba Louaka , Edith Gouin , Marie-Anne Nahori et al.

PLoS Pathogens, 2011, 7 (8), pp.e1002168. ⟨10.1371/journal.ppat.1002168⟩

Article dans une revue hal-02649652v1
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Pathogenic Bacteria Target NEDD8-Conjugated Cullins to Hijack Host-Cell Signaling Pathways

Grégory Jubelin , Frederic Taieb , David Duda , Yun Hsu , Ascel Samba-Louaka et al.

PLoS Pathogens, 2010, 6 (9), pp.e1001128. ⟨10.1371/journal.ppat.1001128⟩

Article dans une revue hal-02952993v1

The enteropathogenic Escherichia Coli effector cif induces delayed apoptosis in epithelial cells

A. Samba-Louaka , Jean-Philippe Nougayrède , Claude Watrin , Eric Oswald , Frederic Taieb

Infection and Immunity, 2009, 77 (12), p. 5471-5477. ⟨10.1128/IAI.00860-09⟩

Article dans une revue hal-02662590v1

Cif type III effector protein: a smart hijacker of the host cell cycle

Ascel Samba-Louaka , Frederic Taieb , Jean-Philippe Nougayrède , Eric Oswald

Future Microbiology, 2009, 4 (7), pp.867-877. ⟨10.2217/fmb.09.60⟩

Article dans une revue hal-02935476v1
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Cycle inhibiting factors (CIFs) are a growing family of functional cyclomodulins present in invertebrate and mammal bacterial pathogens

Grégory Jubelin , Carolina Varela Chavez , Frederic Taieb , Mark J. Banfield , Ascel Samba-Louaka et al.

PLoS ONE, 2009, 4 (3), pp.e4855. ⟨10.1371/journal.pone.0004855⟩

Article dans une revue hal-02659269v1

Cif type III effector protein: a smart hijacker of the host cell cycle

A. Samba-Louaka , Frederic Taieb , Jean-Philippe Nougayrède , Eric Oswald

Future Microbiology, 2009, 4 (7), pp.867-877. ⟨10.2217/FMB.09.60⟩

Article dans une revue hal-02660398v1

Bacterial cyclomodulin Cif blocks the host cell cycle by stabilizing the cyclin-dependent kinase inhibitors p21 waf1 and p27 kip1

Ascel Samba-Louaka , Jean-Philippe Nougayrède , Claude Watrin , Grégory Jubelin , Eric Oswald et al.

Cellular Microbiology, 2008, 10 (12), pp.2496-2508. ⟨10.1111/j.1462-5822.2008.01224.x⟩

Article dans une revue hal-02952999v1

Escherichia coli cyclomodulin Cif induces G(2) arrest of the host cell cycle without activation of the DNA-damage checkpoint-signalling pathway

Frederic Taieb , Jean-Philippe Nougayrède , Claude Watrin , A. Samba-Louaka , Eric Oswald

Cellular Microbiology, 2006, 8 (12), pp.1910-1921. ⟨10.1111/j.1462-5822.2006.00757.x⟩

Article dans une revue hal-02660102v1

Une association inédite entre Pseudomonas aeruginosa, Stenotrophomonas maltophilia, Achromobacter sp. et un isolat environnemental d’amibe libre

Pauline Hardouin , Amélie Jessu , Mélanie Burtin , Chloé Dupont , Vincent Delafont et al.

27e Colloque français des Jeunes chercheurs en mucoviscidose, Vaincre La Mucoviscidose, Feb 2026, Paris, France

Communication dans un congrès hal-05441701v1

Role of free-living amoebae in the environmental persistence of pathogenic mycobacteria: a mesocosm-based approach

Pauline Hardouin , Thierry Cochard , Lorraine Michelet , María-Laura Boschiroli , Jean-Louis Moyen et al.

FLAM 2025, XXth International Meeting on the Biology and Pathogenicity of Free-Living Amoebae, University of Mexico, Nov 2025, Puerto Morelos, Mexico

Communication dans un congrès hal-05242636v1

Decoding host–pathogen interactions: a metabolomic exploration of Legionella pneumophila infection in amoebae

Alban Hay , Willy Aucher , Romain Pigeault , Joanne Bertaux , Alexandre Crépin et al.

Metaboday 2025, Sep 2025, Bordeaux, France

Communication dans un congrès hal-05456348v1

Exploring the molecular mechanisms of encystment in free-living amoebae

Ascel Samba-Louaka

XXth International Meeting on the Biology and Pathogenicity of Free-Living Amoebae (FLAM 2025), Nov 2025, Cancun, Quintana Roo, Mexico

Communication dans un congrès hal-05400095v1

Legionella pneumophila subverts the antioxidant defenses of its amoeba host <i>A. castellanii</i>

Alban Hay , Willy Aucher , Romain Pigeault , Joanne Bertaux , Alexandre Crépin et al.

SympoLegio 2024, Société française de microbiologie (SFM), Oct 2024, Lyon, France

Communication dans un congrès hal-05456462v1

Involvement of oxidative stress in the infection process of <i>A. castellanii</i> by <i>L. pneumophila</i>

Alban Hay , Willy Aucher , Alexandre Crépin , Yann Héchard , Romain Villéger et al.

Microbiology Society Annual Conference 2024, Microbiology Society, Apr 2024, Edimbourg, United Kingdom

Communication dans un congrès hal-05400129v1

Environmental free-living amoeba as potential reservoirs for Mycobacterium bovis and Mycobacterium avium subsp. paratuberculosis

Amélie Jessu , Thierry Cochard , Ascel Samba-Louaka , Jean-Louis Moyen , Franck Biet et al.

The 19th international Free-Living Amoebae Meeting (FLAM), Université de Poitiers, Jun 2023, Poitiers, France

Communication dans un congrès hal-04203794v1

Molecular atlas of Acanthamoeba castellanii remodeling during cyst formation

Ascel Samba-Louaka

Réseau Ecologie des Interactions Durables, May 2023, Poitiers, France

Communication dans un congrès hal-05400081v1

Molecular atlas of Acanthamoeba castellanii remodeling during cyst formation

Ascel Samba-Louaka

XIXth International Meeting on the Biology and Pathogenicity of Free-living Amoebae, Jun 2023, Poitiers, France

Communication dans un congrès hal-05400143v1

The role of oxidative stress in L. pneumophila infection of A. castellanii

Alban Hay , Alexandre Crépin , Willy Aucher , Yann Héchard , Romain Villéger et al.

XIXth International Meeting on the Biology and Pathogenicity of Free-living Amoebae, Jun 2023, Poitiers, France

Communication dans un congrès hal-05400164v1

Environmental free-living amoebae interaction with Mycobacterium avium subsp. paratuberculosis

Amélie Jessu , Thierry Cochard , Ascel Samba-Louaka , Jean-Louis Moyen , Franck Biet et al.

15th International Association for Paratuberculous - ICP 2022, Université de Dublin, Jun 2022, Dublin, Ireland

Communication dans un congrès hal-04203750v1

Molecular atlas of Acanthamoeba castellanii remodeling during cyst formation

Ascel Samba-Louaka

Société Française de Microbiologie, Sep 2021, Nantes (France), France

Communication dans un congrès hal-05400497v1

Les amibes libres, un réservoir environnemental pour les mycobactéries non tuberculeuses ?

Yann Héchard , Vincent Delafont , Ascel Samba , Etienne Robino , Thierry Cochard et al.

14. Congrès national de la Société Française de Microbiologie (SFM), Société Française de Microbiologie (SFM). FRA., Oct 2018, Paris, France

Communication dans un congrès hal-02733536v1

Free-living amoebae as an environmental host for <em>Mycobacterium avium</em> subsp. <em>paratuberculosis</em>

Yann Héchard , Ascel Samba-Louaka , Etienne Robino , Thierry Cochard , Willy Aucher et al.

14. International Colloquium on Paratuberculosis, International Association for Paratuberculosis. INT., Jun 2018, Riviera Maya, Mexico

Communication dans un congrès hal-02733605v1

Environmental <em>Mycobacterium avium</em> subsp. <em>paratuberculosis</em> hosted by free-living amoebae

Ascel Samba-Louaka , Etienne Robino , Thierry Cochard , Maxime Branger , Vincent Delafont et al.

Pathobiome 2018 "Pathogens in Microbiotas in Hosts", Mar 2018, Ajaccio, France

Communication dans un congrès hal-02735589v1

Free-living amoebae as environmental hosts for non-tuberculous Mycobacterium

Vincent Delafont , Ascel Samba-Louaka , Etienne Robino , Thierry Cochard , Willy Aucher et al.

2. NTM European Conference, Société Française de Microbiologie (SFM). FRA., Jun 2018, Montigny-le-Bretonneux, France

Communication dans un congrès hal-02738389v1

Les amibes libres, un réservoir environnemental de <em>Mycobacterium avium</em> ssp. <em>paratuberculosis</em> ?

Yann Héchard , Etienne Robino , Ascel Samba , Thierry Cochard , Maxime Branger et al.

5. Journées d'animation scientifique de la FéRI, Fédération de recherche en infectiologie (FéRI)., Jul 2016, Tours, France

Communication dans un congrès hal-02800718v1

Diversity of amoebae and bacteria in the environment of cattle herds in bovine tuberculosis outbreak zones

Amélie Jessu , Pauline Hardouin , Mélanie Burtin , Jean-Louis Moyen , Franck Biet et al.

FEMS MICRO 2025, May 2025, Milan, Italy

Poster de conférence hal-05242616v1

Deciphering the molecular insights into amoeba-mycobacterium interactions

Pauline Hardouin , Thierry Cochard , Lorraine Michelet , María-Laura Boschiroli , Jean-Louis Moyen et al.

FLAM 2025, XXth International Meeting on the Biology and Pathogenicity of Free-Living Amoebae, Nov 2025, Puerto Morelos, Mexico

Poster de conférence hal-05267633v1

Détection de Mycobacterium bovis et Mycobacterium avium ssp. Paratuberculosis par qPCR nichée à partir d’amibes isolées de l’environnement

Amélie Jessu , Thierry Cochard , Franck Biet , Ascel Samba-Louaka , Jean-Louis Moyen et al.

Microbes 2021 - 16e congrès national de la SFM, Sep 2021, Nantes, France

Poster de conférence hal-05400509v1

Rôle des amibes dans la transmission des infections mycobactériennes chez les ruminants ?

Ascel Samba-Louaka , Etienne Robino , Thierry Cochard , Maxime Branger , Vincent Delafont et al.

Journées d'Animation Scientifique du Département Santé Animale, Oct 2018, Nantes, France. , 2018, Santé Animale et Santé Publique

Poster de conférence hal-02735417v1