@article{Laneque2025,

title = {Mutagenesis to Orient Conjugation and Preserve Self‐adjuvant Properties of Flagellin in Conjugates},

author = {Laura Laneque and Annie Lambert and Delphine Cayet and Caroline Gilleron and Emmanuelle Courtois and Chloé Cloteau and Cédric Broussard and Bastien Annic and Thomas Bessonnet and Emilie Camberlein and Jean‐Claude Sirard and Cyrille Grandjean},

url = {https://hal.science/hal-04940464v1},

doi = {10.1002/cbic.202401002},

issn = {1439-7633},

year  = {2025},

date = {2025-04-14},

urldate = {2025-04-14},

journal = {ChemBioChem},

volume = {26},

number = {8},

publisher = {Wiley},

abstract = {<jats:title>Abstract</jats:title><jats:p>Bacterial flagellins are unique for their capacity to activate both the innate and the adaptive immune response through a Toll‐like receptor 5 (TLR5) signaling cascade. Used as a carrier protein in conjugate vaccines, it is crucial to preserve their self‐adjuvant properties during the conjugation step. Considering the absence of cysteine in the <jats:italic>Salmonella enterica</jats:italic> flagellin FliC sequence, we have investigated the impact of five mutations (A2 C, K180 C, T240 C, D251 C and S306 C) alone or in combination on TLR5 activation. The FliC mutated at the four positions K180 C, T240 C, D251 C and S306 C displayed much the same activity as native flagellin whether the cysteine residues were free or conjugated. These results pave the way for the preparation of self‐adjuvanting conjugate vaccines based on cysteine‐mutated FliC as a carrier protein.</jats:p>},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{depienne_click-electrochemistry_2023,

title = {Click-electrochemistry for the rapid labeling of virus, bacteria and cell surfaces},

author = {Sébastien Depienne and Mohammed Bouzelha and Emmanuelle Courtois and Karine Pavageau and Pierre-Alban Lalys and Maia Marchand and Dimitri Alvarez-Dorta and Steven Nedellec and Laura Marín-Fernández and Cyrille Grandjean and Mohammed Boujtita and David Deniaud and Mathieu Mével and Sébastien G. Gouin},

url = {https://doi.org/10.1038/s41467-023-40534-0

https://dx.doi.org/10.26434/chemrxiv-2023-q3sd8

https://hal.science/hal-04246348v1},

doi = {10.1038/s41467-023-40534-0},

issn = {2041-1723},

year  = {2023},

date = {2023-08-01},

urldate = {2023-08-01},

journal = {Nature Communications},

volume = {14},

number = {1},

pages = {5122},

abstract = {Methods for direct covalent ligation of microorganism surfaces remain poorly reported, and mostly based on metabolic engineering for bacteria and cells functionalization. While effective, a faster method avoiding the bio-incorporation step would be highly complementary. Here, we used N-methylluminol (NML), a fully tyrosine-selective protein anchoring group after one-electron oxidation, to label the surface of viruses, living bacteria and cells. The functionalization was performed electrochemically and in situ by applying an electric potential to aqueous buffered solutions of tagged NML containing the viruses, bacteria or cells. The broad applicability of the click-electrochemistry method was explored on recombinant adeno-associated viruses (rAAV2), Escherichia coli (Gram-) and Staphyloccocus epidermidis (Gram + ) bacterial strains, and HEK293 and HeLa eukaryotic cell lines. Surface electro-conjugation was achieved in minutes to yield functionalized rAAV2 that conserved both structural integrity and infectivity properties, and living bacteria and cell lines that were still alive and able to divide.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Chabot2019a,

title = {New phosphorylation sites of rad51 by c-met modulates presynaptic filament stability},

author = {Thomas Chabot and Alain Defontaine and Damien Marquis and Axelle Renodon-Corniere and Emmanuelle Courtois and Fabrice Fleury and Yvonnick Cheraud},

doi = {10.3390/cancers11030413},

issn = {20726694},

year  = {2019},

date = {2019-01-01},

journal = {Cancers},

volume = {11},

number = {3},

abstract = {Genomic instability through deregulation of DNA repair pathways can initiate cancer and subsequently result in resistance to chemo and radiotherapy. Understanding these biological mechanisms is therefore essential to overcome cancer. RAD51 is the central protein of the Homologous Recombination (HR) DNA repair pathway, which leads to faithful DNA repair of DSBs. The recombinase activity of RAD51 requires nucleofilament formation and is regulated by post-translational modifications such as phosphorylation. In the last decade, studies have suggested the existence of a relationship between receptor tyrosine kinases (RTK) and Homologous Recombination DNA repair. Among these RTK the c-MET receptor is often overexpressed or constitutively activated in many cancer types and its inhibition induces the decrease of HR. In this study, we show for the first time that c-MET is able to phosphorylate the RAD51 protein. We demonstrate in vitro that c-MET phosphorylates four tyrosine residues localized mainly in the subunit-subunit interface of RAD51. Whereas these post-translational modifications do not affect the presynaptic filament formation, they strengthen its stability against the inhibitor effect of the BRC peptide obtained from BRCA2. Taken together, these results confirm the role of these modifications in the regulation of the BRCA2-RAD51 interaction and underline the importance of c-MET in DNA damage response.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}