Bacteriology research

Research

People

Our research

Our translational research line in interdisciplinary in essence and based on skills in infectious diseases, pediatrics, microbiology, genetics, bioinformatics, immunology and public health. Based on strong basic science skills in bacteriology, our goal is not only to increase basic scientific knowledge in Strep A infections but also to deliver practical solutions to patients and health care professional such as new vaccine antigens, new diagnostic tests and hopefully new drug targets. The academic background of the two PI from our Lab (P Smeesters as Paediatrician and clinical-scientist and A Botteaux as basic science microbiologist) illustrates the interdisciplinary philosophy of our research group. Our research focus on a particularly aggressive bacteria called Streptococcus pyogenes (Strep A). We aim to better understand the virulence pathways this bacterium uses when infecting humans. Special focus is made on surface and secreted proteins that could play a pivotal role in infections and be used as vaccine antigens. We are also interested on understanding the tissue tropism of Strep A (skin and throat) in order to analyze more precisely the transmission of strains in vulnerable populations and phages-StrepA interactions to potentially develop lytic phages against StrepA.

The research line from the bacteriology research group is multidisciplinary and lies at the crossroad between microbiology, genetics, bioinformatics, immunology, infectious diseases, paediatrics and public health. Most of our current projects use Group A streptococcus (GAS) as a model system. Our lab is currently developing new vaccine formulations against GAS and performing the molecular characterisation of GAS virulence determinants as well as bacteriophage-GAS interactions.

Our team

Pr. Smeesters is a paediatrician by training, he has spent half of his career working in basic science laboratories (ULB (IBMM), University of Melbourne, Queensland Institute for medical research, and Murdoch Children research Institute, Australia) working on Strep A virulence. He is also the head of the paediatric department at the Queen Fabiola Children Hospital, Brussels University Hospital, ULB.

Pr. Smeesters is a paediatrician by training and has spent half of his career working on Strep A virulence in basic science labs. He is also the head of the paediatric department at the Queen Fabiola Children Hospital, Brussels University Hospital, ULB.

Pr. Botteaux is a microbiologist by training with strong experience in molecular bacteriology and interest in the clinical applications of basic science experimental results. She is co-heading the Bacmol lab and is a professor of host-microbe interactions at the ULB Faculty of Medicine and at the Brussels School of Engineering.

Pr. Botteaux is a microbiologist by training with expertise in molecular bacteriology and interest in translational medicine. She is co-heading the lab and is a professor at the Faculty of Medicine (ULB) and at the Brussels School of Engineering.

Selected publications

Frost HR, Guglielmini J, Duchêne S, Lacey JA, Sanderson-Smith M, Steer AC, Walker MJ, Botteaux A, Davies MR and Smeesters PR. Promiscuous evolution of Group A Streptococcal M and M-like proteins. Microbiology. 2023 Jan;169(1):001280. doi: 10.1099/mic.0.001280

Davies MR, McIntyre L, Mutreja A, Lacey JA, Lees JA, Towers RJ, Duchêne S, Smeesters PR, Frost HR, Price DJ, Holden MTG, David S, Giffard PM, Worthing KA, Seale AC, Berkley JA, Harris SR, Rivera-Hernandez T, Berking O, Cork AJ, Torres RSLA, Lithgow T, Strugnell RA, Bergmann R, Nitsche-Schmitz P, Chhatwal GS, Bentley SD, Fraser JD, Moreland NJ, Carapetis JR, Steer AC, Parkhill J, Saul A, Williamson DA, Currie BJ, Tong SYC, Dougan G, Walker MJ. Atlas of group A streptococcal vaccine candidates compiled using large scale comparative genomics. Nature Genetics. 2019 Jun;51(6):1035-1043. doi: 10.1038/s41588-019-0417-8

Frost HR, Sanderson-Smith M, Walker M, Botteaux A and Smeesters PR. Group A streptococcal M-like proteins: from pathogenesis to vaccine potential. FEMS Microbiology Reviews. 2018 Mar 1;42(2):193-204. doi: 10.1093/femsre/fux057

Kadari M, Lakhloufi D, Delforge V, Imbault V, Communi D, Smeesters P, Botteaux A. Multiple proteins arising from a single gene: The role of the Spa33 variants in Shigella T3SS regulation. Microbiologyopen. 2019 Dec;8(12):e932. doi: 10.1002/mbo3.932

Botteaux A, Budnik I, Smeesters PR. Group A Streptococcus infections in children: from virulence to clinical management. Curr Opin Infect Dis. 2018 Jun;31(3):224-230. doi: 10.1097/QCO.0000000000000452

Smeesters PR and Botteaux A. The emm-Cluster Typing System. Methods Mol Biol. 2020;2136:25-31. doi: 10.1007/978-1-0716-0467-0_3

El Hajjami N, Moussa S, Houssa J, Monteyne D, Perez-Morga D, Botteaux A. The inner-rod component of Shigella flexneri type 3 secretion system, MxiI, is involved in the transmission of the secretion activation signal by its interaction with MxiC. Microbiologyopen. 2018 Feb;7(1):e00520. doi: 10.1002/mbo3.520

Aranha MP, Penfound TA, Salehi S, Botteaux A, Smeesters P, Dale JB, Smith JC. Design of Broadly Cross-Reactive M Protein-Based Group A Streptococcal Vaccines. J Immunol. 2021 Aug 15;207(4):1138-1149. doi: 10.4049/jimmunol.2100286

Frost HR, Laho D, Sanderson-Smith ML, Licciardi P, Donath S, Curtis N, Joseph Kado J, Dale JB, Steer AC and Smeesters PR. Immune cross-opsonisation within emm-clusters following group A streptococcus skin infection: broadening the scope of type-specific immunity. Clinical Infect Dis. 2017 Oct 16;65(9):1523-1531. doi: 10.1093/cid/cix599

de Crombrugghe G, Baroux N, Botteaux A, Moreland NJ, Williamson DA, Steer AC and Smeesters PR. The Limitations of the Rheumatogenic Concept for Group A Streptococcus: systematic review and genetic analysis. Clin Infect Dis. 2020 Mar 17;70(7):1453-1460. doi: 10.1093/cid/ciz425

Frost HR, et al. Microbiology. 2023 Jan;169(1):001280. doi: 10.1099/mic.0.001280
Davies MR, et al. Nature Genetics. 2019 Jun;51(6):1035-1043. doi: 10.1038/s41588-019-0417-8
Frost HR, et al. FEMS Microbiology Reviews. 2018 Mar 1;42(2):193-204. doi: 10.1093/femsre/fux057
Kadari M, et al. Microbiologyopen. 2019 Dec;8(12):e932. doi: 10.1002/mbo3.932
Botteaux A, et al. Curr Opin Infect Dis. 2018 Jun;31(3):224-230. doi: 10.1097/QCO.0000000000000452
Smeesters PR and Botteaux A. Methods Mol Biol. 2020;2136:25-31. doi: 10.1007/978-1-0716-0467-0_3
El Hajjami N, et al. Microbiologyopen. 2018 Feb;7(1):e00520. doi: 10.1002/mbo3.520
Aranha MP, et al. J Immunol. 2021 Aug 15;207(4):1138-1149. doi: 10.4049/jimmunol.2100286
Frost HR, et al. Clinical Infect Dis. 2017 Oct 16;65(9):1523-1531. doi: 10.1093/cid/cix599
de Crombrugghe G, et al. Clin Infect Dis. 2020 Mar 17;70(7):1453-1460. doi: 10.1093/cid/ciz425