Virus-Host Protein Interactions - Benoit Coulombe PhD

Virus-Host Protein Interactions - Benoit Coulombe PhDVirus-Host Protein Interactions - Benoit Coulombe PhDVirus-Host Protein Interactions - Benoit Coulombe PhD

Virus-Host Protein Interactions - Benoit Coulombe PhD

Virus-Host Protein Interactions - Benoit Coulombe PhDVirus-Host Protein Interactions - Benoit Coulombe PhDVirus-Host Protein Interactions - Benoit Coulombe PhD

Mapping Biomolecular Interactions in 3D with AI

Mapping Biomolecular Interactions in 3D with AIMapping Biomolecular Interactions in 3D with AIMapping Biomolecular Interactions in 3D with AI




Accelerating antiviral discovery through advanced AI


Interactys-AI 

NEQ. 2281724825

Interactys-AI in the News

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Following the publication of our article in Viruses, titled “AI-Powered Identification of Human Cell Surface Protein Interactors of the Hemagglutinin Glycoprotein of High-Pandemic-Risk H5N1 Influenza Virus,” our work garnered significant attention from major news outlets in Québec. 


The study details the identification of human cell-surface proteins that interact with the hemagglutinin (HA) protein of the highly pathogenic H5N1 avian influenza. This research is a crucial step toward understanding how this virus may adapt to human infection and the role of AI in structural biology in preventing such transmission. 


As a result, our findings were prominently featured by several major French-language media organizations, including La Presse, L’Actualité, and TVA Nouvelles. This coverage underscores the importance of AI-driven structural biology in enhancing pandemic preparedness. 


Featured TV report (TVA Nouvelles)


“Grippe aviaire : une percée majeure pour freiner une possible transmission humaine”

TVA Nouvelles, January 9, 2026


🔗 https://www.tvanouvelles.ca/2026/01/09/grippe-aviaire-une-percee-majeure-pour-freiner-une-possible-transmission-humaine

What is Interactys-AI?

 Interactys-AI is an emerging biotechnology company leveraging advanced AI to map 3D virus-host protein interactions, most particularly the surface interactome. By detailing complex infection mechanisms, the platform accelerates the design of targeted antiviral molecules to combat current infections and proactively mitigate future pandemics.


 

On January 22, 2026, Interactys-AI was officially incorporated under the Registre des entreprises du Québec (REQ). Being its founder, I now serve as the company's CEO. In addition to developing advanced AI tools for modeling proteins, protein complexes, and interaction networks, Interactys-AI provides specialized expertise to researchers to accelerate scientific discovery.

Our Key Publications

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Fernandes MGF, Pinard M, Sokullu E, Gagnon JF, Calon F, Coulombe B, Consortium pour l’identification précoce de la maladie d’Alzheimer (CIMA-Q), Brouillette J. Differences in blood levels of neuroligin-derived peptides in a cohort for early detection of Alzheimer's disease. 2026 Journal of Gerontology: Biological Sciences. 


Poitras C, Coulombe B. AI-Powered Identification of Human Cell Surface Protein Interactors of the Hemagglutinin Glycoprotein of High-Pandemic-Risk H5N1 Influenza Virus. 2025 Viruses. In press - https://www.mdpi.com/1999-4915/17/12/1638 


Moursli Y, Faubert D, Grou C, Coulombe B. Discovery and characterization of a pancreatic β cell subpopulation expressing an unknown surface epitope through single cell proteomics. 2025 bioRxiv. https://lnkd.in/e8GDAs5i 


Moursli Y, Poitras C, Coulombe B. Investigating pancreatic β cell membrane epitopes using unbiased cell-based Fab-phage display. bioRxiv, 2025.03.29.645157; doi: https://doi.org/10.1101/2025.03.29.645157. 


Hashimoto-Roth E, Forget D, Gaspar VP, Bennett SAL, Gauthier MS, Coulombe B, Lavallée-Adam M. MAGPIE: A Machine Learning Approach to Decipher Protein-Protein Interactions in Human Plasma. J Proteome Res. 2025 Jan 7. doi: 10.1021/acs.jproteome.4c00160. Epub ahead of print. PMID: 39772751.


Pinard M, Dastpeyman S, Poitras C, Bernard G, Gauthier MS, Coulombe B. Riluzole partially restores RNA polymerase III complex assembly in cells expressing the leukodystrophy-causative variant POLR3B R103H. Mol Brain. 2022 Nov 30;15(1):98. doi: 10.1186/s13041-022-00974-z


Sokullu E, Pinard M, Gauthier MS, Coulombe B. Analysis of the SARS-CoV-2-host protein interaction network reveals new biology and drug candidates: focus on the spike surface glycoprotein and RNA polymerase. Expert Opin Drug Discov. 2021 Aug;16(8):881-895. doi: 10.1080/17460441.2021.1909566.


Sokullu E, Gauthier MS, Coulombe B. Discovery of Antivirals Using Phage Display. Viruses. 2021 Jun 10;13(6):1120. doi: 10.3390/v13061120. 


Cloutier P, Poitras C, Durand M, Hekmat O, Fiola-Masson É, Bouchard A, Faubert D, Chabot B, Coulombe B. R2TP/Prefoldin-like component RUVBL1/RUVBL2 directly interacts with ZNHIT2 to regulate assembly of U5 small nuclear ribonucleoprotein Nat Commun. 2017 May 31;8:15615. doi: 10.1038/ncomms15615. PMID: 28561026


Houry WA, Bertrand E, Coulombe B. The PAQosome, an R2TP-Based Chaperone for Quaternary Structure Formation Trends Biochem Sci. 2018 Jan;43(1):4-9. doi: 10.1016/j.tibs.2017.11.001. Epub 2017 Dec 5. Review. PMID: 29203338


Thiffault I, Wolf NI, Forget D, Guerrero K, Tran LT, Choquet K, Lavallée-Adam M, Poitras C, Brais B, Yoon G, Sztriha L, Webster RI, Timmann D, van de Warrenburg BP, Seeger J, Zimmermann A, Máté A, Goizet C, Fung E, van der Knaap MS, Fribourg S, Vanderver A, Simons C, Taft RJ, Yates JR 3rd, Coulombe B, Bernard G. Recessive mutations in POLR1C cause a leukodystrophy by impairing biogenesis of RNA polymerase III Nat Commun. 2015 Jul 7;6:7623. doi: 10.1038/ncomms8623. PMID: 26151409


Jeronimo C, Forget D, Bouchard A, Li Q, Chua G, Poitras C, Thérien C, Bergeron D, Bourassa S, Greenblatt J, Chabot B, Poirier GG, Hughes TR, Blanchette M, Price DH, Coulombe B. Systematic analysis of the protein interaction network for the human transcription machinery reveals the identity of the 7SK capping enzyme Mol Cell. 2007 Jul 20;27(2):262-74. PMID: 17643375

Service Offering (Publication-Level Research Support)

Two views of a protein complex with distinct green and orange regions.

 

Interactys-AI provides advanced, AI-driven structural biology services designed to support high-impact scientific publications, translational research, and competitive funding applications.


Our expertise includes:


  • Identification and mapping of protein–protein interactions
    Using an advanced, customized implementation of AlphaFold 3, we model and analyze protein–protein interaction networks with a focus on biological relevance and mechanistic insight.


  • Assessment of drug interference with protein–protein interactions
    Structural characterization of how small molecules, peptides, or biologics may disrupt or modulate protein–protein interfaces, supporting drug repurposing, target validation, and mechanism-of-action studies.


  • High-confidence structural modeling of proteins and complexes
    Generation of detailed structural models for individual proteins and multi-component complexes, suitable for publication, grant proposals, and downstream experimental design.


  • Scientific collaborations and funding applications
    Active participation in collaborative research projects, including conceptual input, structural analyses, and figure generation in support of grant submissions and consortium-based funding initiatives.

About Benoit Coulombe

Portrait of a bald man in a gray blazer and white shirt.

 

Benoit Coulombe, PhD, spent most of his carreer as a molecular biology and biochemistry professor at the Montreal Clinical Research Institute (IRCM) affiliated to the University of Montreal. He is now retired and devotes his time to the creation of the biotechnology company Interactys-AI. Pr. Coulombe has published 109 scientific articles so far (totalling nearly 9000 citations) and was among the pioneers in applying AI to protein interactomes (see Jeronimo et al 2007).



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