Biophysical characterization of the translocation process of Bordetella pertussis adenylate cyclase toxin CyaA
This project aims to describe the hydrodynamic and thermodynamic properties of the CyaA toxin and the conformational changes it undergoes during its translocation process across the lipid membranes of Bordetella pertussis (secretion) and of […]
We are interested in investigating the effects of molecular crowding, i.e., excluded volume effects, mimicking the effects of high concentrations of macromolecular solutes found in biological fluids on biochemical properties of proteins. In particular, […]
Clinical development of cancer vaccines
CyaA-based therapeutic cancer vaccines Based on our discovery that a bacterial protein, the adenylate cyclase (CyaA), binds to dendritic cells (DCs), we have developed a highly efficient vector capable of targeting a wide range […]
CyaA secretion, folding and translocation across membrane
CyaA, a 1706 residue-long protein, is one of the major virulence factors produced by B. pertussis and plays an important role in the early stages of respiratory tract colonization. This toxin uses an original […]
Regulatory roles of signaling Nucleotides
Other research projects are aimed at exploring the regulatory role of different nucleotides such ppGpp and pppGpp that are both thought to act as second messengers in many complex cellular responses to nutritional […]
In vivo analysis of protein-protein interactions
A second main line of research of the team is focused on the characterization of protein-protein interactions by exploiting a bacterial two-hybrid screening technology (BACTH) that we have previously developed (Karimova et al., […]
Recombinant CyaA toxin as an innovative vaccine vehicle
From an applied perspective, we have shown in collaboration with the team of C. Leclerc, (Immune Regulation and Vaccinology, Institut Pasteur) that CyaA can be engineered to serve as a potent non-replicating vector […]
Structure-function studies of the CyaA toxin
The CyaA toxin is a 1706 residues-long bifunctional protein (Figure 1): the calmodulin-activated, catalytic domain is located in the 400 amino-proximal residues, whereas the carboxy-terminal 1306 residues are responsible for the binding of […]
2018Bioengineering of Adenylate Cyclase Toxin for Antigen-Delivery and Immunotherapy, Toxins (Basel) 2018 Jul;10(7).
2018Compartmentalized Cyclic AMP Production by the and Adenylate Cyclase Toxins Differentially Affects the Immune Synapse in T Lymphocytes, Front Immunol 2018;9:919.
2018Calcium-dependent disorder-to-order transitions are central to the secretion and folding of the CyaA toxin of Bordetella pertussis, the causative agent of whooping cough, Toxicon 2018 Jul;149:37-44.
2018A Bacterial Adenylate Cyclase-Based Two-Hybrid System Compatible with Gateway Cloning, Methods Mol. Biol. 2018;1794:75-96.
2017ExoY, an actin-activated nucleotidyl cyclase toxin from P. aeruginosa: A minireview, Toxicon 2018 Jul;149:65-71.
2017Lack of MHC class II molecules favors CD8 T-cell infiltration into tumors associated with an increased control of tumor growth, Oncoimmunology 2018;7(3):e1404213.
2017SEC-SAXS and HDX-MS: A powerful combination. The case of the calcium-binding domain of a bacterial toxin, Biotechnol. Appl. Biochem. 2018 Jan;65(1):62-68.
2017Analysis of Membrane Protein Interactions with a Bacterial Adenylate Cyclase-Based Two-Hybrid (BACTH) Technique, Curr Protoc Mol Biol 2017 Apr;118:20.12.1-20.12.24.
2017Stability, structural and functional properties of a monomeric, calcium-loaded adenylate cyclase toxin, CyaA, from Bordetella pertussis, Sci Rep 2017 Feb;7:42065.
2017Protein-Protein Interaction: Bacterial Two-Hybrid, Methods Mol. Biol. 2017;1615:159-176.
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