Team Jan 2025 | BSL-2 lab | Calanque de Morgiou |
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Principal investigators
Stéphane Canaan
Team Leader (DR2 CNRS)
+33 491 164 093
canaan@imm.cnrs.fr
ORCID id
I have been working for more than 20 years in the field of lipolytic enzymes, my main interest being to decipher their functions and biochemical behavior at the lipid interface. I have a long practice in molecular biology and in protein biochemistry (purification, biochemical characterization, expression of recombinant proteins using either E. coli, M. smegmatis, P. Pastoris or baculovirus insect cells systems).
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In 2004, I set up the team entitled “Lipolysis and Bacterial Pathogenicity”. The main topic of the team is to characterize the lipolytic enzymes involved in M. tuberculosis metabolism of lipids. We study these proteins in vitro by purifying the recombinant enzymes and in vivo by deleting their corresponding genes in the bacterial genome. Our works have demonstrated the importance of these lipolytic enzymes in the virulence, the propagation of the disease but also in the dormancy and the diagnosis of TB.
We extended our experiences in many other mycobacteria like M. abcessus, M. ulcerans, M. canetti.
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Thanks to results obtained, we became one of the leaders in the field of mycobacterial lipolytic enzymes.
Jean-François Cavalier
Permanent Researcher
(DR2 CNRS)
Scientific co-leader
+33 491 164 093
jfcavalier@imm.cnrs.fr
ORCID id
After a Chemical Engineer diploma (ENSSPICAM, Marseille - 1993), followed by a PhD thesis (1994-1997) on the interfacial inhibition studies of human pancreatic and gastric lipases by enantiopure alkylphosphonates; I spent two years' post-doctoral research positions in medicinal chemistry. During this period I worked successively on anti-cancer agents derived from retinol and nitrogen mustards (Univ. Montpellier - 1998-1999); and on a new family of aminopyrazine derivatives analogous of Coelenteramine as antioxidants (Univ. Catholique de Louvain, Belgium - 1999-2000).
During the next 7 years, I worked in fine chemical and pharmaceutical companies under cGMP and GLP compliance. Among main achievements, I performed the development, optimization and process validation of 3 generic drugs as ready to use infusion solutions; and I was involved in two phase III clinical trials on severe pancreatic insufficiency.
Then, from October 2008, I reached a CNRS permanent position (CR1) in Marseille.
My main research interest is now focused on the development and use of (Ser/Cys)-based enzyme inhibitors against human mycobacterial-related diseases, including Cystic Fibrosis (i.e., M. abscessus) and tuberculosis (i.e., M. tuberculosis). Identifying such inhibitors will provide major information that will undoubtedly lead to the development of new therapeutic strategies for elimination of actively growing and/or latent bacilli from infected individuals.
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With an extensive experience in both academic and industrial research, I have thus acquired expertise in three important areas: organic/medicinal chemistry, biochemistry/enzymology, and in the concepts and needs of pharmaceutical industry (process development & industrialization, project management...).
All this allowed me to take the lead coordination of studies involving (Ser/Cys)-based enzyme inhibitors against mycobacterial-associated infections.
Pierre Santucci
Permanent Researcher
(CRCN CNRS)
+33 491 164 091
psantucci@imm.cnrs.fr
ORCID id
After a master's degree in molecular microbiology (2015), I completed my thesis in the LBP Team on the characterization of the physiological role of lipolytic enzymes involved in the metabolism of mycobacterial lipids. From 2019 to 2022, I did a postdoctoral fellowship in the group of Dr Maximiliano GUTIERREZ (The Francis CRICK Institute, London, UK), during which I developed new imaging techniques to evaluate the distribution and efficacy of antibiotics at the subcellular level which allowed me to dissect the mode of action of pyrazinamide in M. tuberculosis.
Recently appointed permanent researcher (CRCN CNRS - Section 21 - LISM, Marseille, France), my research project consists in developing innovative chemo-genetic approaches, based on CRISPR interference technology (CRISPRi), in order to define the cellular and molecular basis involved in mycobacterial pathogenesis, but also in the mode of action and the resistance to antibiotics
My personal website
Christine Kellenberger
Permanent Researcher
(CRHC CNRS)
+33 491 164 093
ckellenberger@imm.cnrs.fr
C. Kellenberger, who was first trained as a chemist (Strasbourg University), is researcher (chargée du recherche) at the CNRS. During her career, she worked in a number of different laboratories, developing projects ranging from peptide chemistry to structural biology and microbiology. Her previous work focused on insect protease inhibitors
(with the identification of a new family), activation of the Toll pathway (involved in innate immunity) of Drosophila by proteases, inhibition of human neutrophil protease 3 (INSERM collaboration), bacterial secretion bacterial secretion systems (T6SS, T9SS and T2SS, analysis of the interactions between components). She now mainly focuses on bacterial antivirulence. Her areas of expertise include peptide synthesis, recombinant protein expression (in prokaryotic and eukaryotic systems) and molecular biology, analytical methods for in vitro interactions and in vivo approaches (on P. aeruginosa, chromosomal mutation, phenotype analysis).
Vanessa Point
CNRS Engineer (IE)
vpoint@imm.cnrs.fr
Technical staff
Technical expertise
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Biochemistry: cloning, production, purification and kinetic characterization of recombinant enzymes.
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Interfacial enzymology: monomolecular film technique, pH-stat analysis.
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Organic synthesis: amino acids and sugar chemistry, peptide synthesis.
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Analysis: GC, lipid analysis (TLC, Iatroscan), MALDI-TOF spectrometry.
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Lipase inhibition studies.
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Electron microscopy.