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Boisard J, Florent I. Porospora gigantea. Trends Parasitol 2023; 39:886-887. [PMID: 37344291 DOI: 10.1016/j.pt.2023.05.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/26/2023] [Accepted: 05/26/2023] [Indexed: 06/23/2023]
Affiliation(s)
- Julie Boisard
- Département Adaptations du Vivant (AVIV), Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245 CNRS), Muséum National d'Histoire Naturelle, CNRS, CP 52, 57 rue Cuvier, 75231 Cedex 05 Paris, France
| | - Isabelle Florent
- Département Adaptations du Vivant (AVIV), Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245 CNRS), Muséum National d'Histoire Naturelle, CNRS, CP 52, 57 rue Cuvier, 75231 Cedex 05 Paris, France.
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2
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Pascual Alonso I, Almeida García F, Valdés Tresanco ME, Arrebola Sánchez Y, Ojeda Del Sol D, Sánchez Ramírez B, Florent I, Schmitt M, Avilés FX. Marine Invertebrates: A Promissory Still Unexplored Source of Inhibitors of Biomedically Relevant Metallo Aminopeptidases Belonging to the M1 and M17 Families. Mar Drugs 2023; 21:md21050279. [PMID: 37233473 DOI: 10.3390/md21050279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/25/2023] [Accepted: 04/26/2023] [Indexed: 05/27/2023] Open
Abstract
Proteolytic enzymes, also known as peptidases, are critical in all living organisms. Peptidases control the cleavage, activation, turnover, and synthesis of proteins and regulate many biochemical and physiological processes. They are also involved in several pathophysiological processes. Among peptidases, aminopeptidases catalyze the cleavage of the N-terminal amino acids of proteins or peptide substrates. They are distributed in many phyla and play critical roles in physiology and pathophysiology. Many of them are metallopeptidases belonging to the M1 and M17 families, among others. Some, such as M1 aminopeptidases N and A, thyrotropin-releasing hormone-degrading ectoenzyme, and M17 leucyl aminopeptidase, are targets for the development of therapeutic agents for human diseases, including cancer, hypertension, central nervous system disorders, inflammation, immune system disorders, skin pathologies, and infectious diseases, such as malaria. The relevance of aminopeptidases has driven the search and identification of potent and selective inhibitors as major tools to control proteolysis with an impact in biochemistry, biotechnology, and biomedicine. The present contribution focuses on marine invertebrate biodiversity as an important and promising source of inhibitors of metalloaminopeptidases from M1 and M17 families, with foreseen biomedical applications in human diseases. The results reviewed in the present contribution support and encourage further studies with inhibitors isolated from marine invertebrates in different biomedical models associated with the activity of these families of exopeptidases.
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Affiliation(s)
- Isel Pascual Alonso
- Center for Protein Studies, Faculty of Biology, University of Havana, Havana 10400, Cuba
| | - Fabiola Almeida García
- Center for Protein Studies, Faculty of Biology, University of Havana, Havana 10400, Cuba
| | - Mario Ernesto Valdés Tresanco
- Center for Protein Studies, Faculty of Biology, University of Havana, Havana 10400, Cuba
- Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada
| | | | - Daniel Ojeda Del Sol
- Center for Protein Studies, Faculty of Biology, University of Havana, Havana 10400, Cuba
| | | | - Isabelle Florent
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR7245), Muséum National d'Histoire Naturelle, CNRS, CP52, 57 Rue Cuvier, 75005 Paris, France
| | - Marjorie Schmitt
- Université de Haute-Alsace, Université de Strasbourg, CNRS, LIMA UMR 7042, 68000 Mulhouse, France
| | - Francesc Xavier Avilés
- Institute for Biotechnology and Biomedicine and Department of Biochemistry, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
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Kolářová I, Florent I, Valigurová A. Parasitic Protists: Diversity of Adaptations to a Parasitic Lifestyle. Microorganisms 2022; 10:microorganisms10081560. [PMID: 36013978 PMCID: PMC9414628 DOI: 10.3390/microorganisms10081560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 07/29/2022] [Indexed: 12/10/2022] Open
Affiliation(s)
- Iva Kolářová
- Laboratory of Vector Biology, Department of Parasitology, Faculty of Science, Charles University, Albertov 6, 128 44 Prague, Czech Republic
- Correspondence: (I.K.); (I.F.); (A.V.)
| | - Isabelle Florent
- Parasites and Free-Living Protists (UMR7245 CNRS-MNHN, MCAM), Department “Adaptations of Living Organisms”, National Museum of Natural History, CEDEX 05, 75231 Paris, France
- Correspondence: (I.K.); (I.F.); (A.V.)
| | - Andrea Valigurová
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
- Correspondence: (I.K.); (I.F.); (A.V.)
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4
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Boisard J, Duvernois-Berthet E, Duval L, Schrével J, Guillou L, Labat A, Le Panse S, Prensier G, Ponger L, Florent I. Marine gregarine genomes reveal the breadth of apicomplexan diversity with a partially conserved glideosome machinery. BMC Genomics 2022; 23:485. [PMID: 35780080 PMCID: PMC9250747 DOI: 10.1186/s12864-022-08700-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 06/13/2022] [Indexed: 12/29/2022] Open
Abstract
Our current view of the evolutionary history, coding and adaptive capacities of Apicomplexa, protozoan parasites of a wide range of metazoan, is currently strongly biased toward species infecting humans, as data on early diverging apicomplexan lineages infecting invertebrates is extremely limited. Here, we characterized the genome of the marine eugregarine Porospora gigantea, intestinal parasite of Lobsters, remarkable for the macroscopic size of its vegetative feeding forms (trophozoites) and its gliding speed, the fastest so far recorded for Apicomplexa. Two highly syntenic genomes named A and B were assembled. Similar in size (~ 9 Mb) and coding capacity (~ 5300 genes), A and B genomes are 10.8% divergent at the nucleotide level, corresponding to 16-38 My in divergent time. Orthogroup analysis across 25 (proto)Apicomplexa species, including Gregarina niphandrodes, showed that A and B are highly divergent from all other known apicomplexan species, revealing an unexpected breadth of diversity. Phylogenetically these two species branch sisters to Cephaloidophoroidea, and thus expand the known crustacean gregarine superfamily. The genomes were mined for genes encoding proteins necessary for gliding, a key feature of apicomplexans parasites, currently studied through the molecular model called glideosome. Sequence analysis shows that actin-related proteins and regulatory factors are strongly conserved within apicomplexans. In contrast, the predicted protein sequences of core glideosome proteins and adhesion proteins are highly variable among apicomplexan lineages, especially in gregarines. These results confirm the importance of studying gregarines to widen our biological and evolutionary view of apicomplexan species diversity, and to deepen our understanding of the molecular bases of key functions such as gliding, well known to allow access to the intracellular parasitic lifestyle in Apicomplexa.
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Affiliation(s)
- Julie Boisard
- Département Adaptations du Vivant (AVIV), Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245 CNRS), Muséum National d'Histoire Naturelle, CNRS, CP 52, 57 rue Cuvier, 75231 Cedex 05, Paris, France. .,Département Adaptations du Vivant (AVIV), Structure et instabilité des génomes (STRING UMR 7196 CNRS/INSERM U1154), Muséum National d'Histoire Naturelle, CNRS, INSERM, CP 26, 57 rue Cuvier, 75231 Cedex 05, Paris, France. .,Department of Biology, Lund University, Sölvegatan 35, 223 62, Lund, Sweden.
| | - Evelyne Duvernois-Berthet
- Département Adaptations du Vivant (AVIV), Physiologie Moléculaire et Adaptation (PhyMA UMR 7221 CNRS), Muséum national d'Histoire naturelle, CNRS, CP 32, 7 rue Cuvier, 75005, Paris, France
| | - Linda Duval
- Département Adaptations du Vivant (AVIV), Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245 CNRS), Muséum National d'Histoire Naturelle, CNRS, CP 52, 57 rue Cuvier, 75231 Cedex 05, Paris, France
| | - Joseph Schrével
- Département Adaptations du Vivant (AVIV), Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245 CNRS), Muséum National d'Histoire Naturelle, CNRS, CP 52, 57 rue Cuvier, 75231 Cedex 05, Paris, France
| | - Laure Guillou
- CNRS, UMR7144 Adaptation et Diversité en Milieu Marin, Ecology of Marine Plankton (ECOMAP), Station Biologique de Roscoff SBR, Sorbonne Université, 29680, Roscoff, France
| | - Amandine Labat
- Département Adaptations du Vivant (AVIV), Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245 CNRS), Muséum National d'Histoire Naturelle, CNRS, CP 52, 57 rue Cuvier, 75231 Cedex 05, Paris, France
| | - Sophie Le Panse
- Plateforme d'Imagerie Merimage, FR2424, Centre National de la Recherche Scientifique, Station Biologique de Roscoff, 29680, Roscoff, France
| | - Gérard Prensier
- Cell biology and Electron Microscopy Laboratory, François Rabelais University, 10 Boulevard Tonnellé, 3223 Cedex, Tours, BP, France
| | - Loïc Ponger
- Département Adaptations du Vivant (AVIV), Structure et instabilité des génomes (STRING UMR 7196 CNRS/INSERM U1154), Muséum National d'Histoire Naturelle, CNRS, INSERM, CP 26, 57 rue Cuvier, 75231 Cedex 05, Paris, France.
| | - Isabelle Florent
- Département Adaptations du Vivant (AVIV), Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245 CNRS), Muséum National d'Histoire Naturelle, CNRS, CP 52, 57 rue Cuvier, 75231 Cedex 05, Paris, France.
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5
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Boucard AS, Florent I, Polack B, Langella P, Bermúdez-Humarán LG. Genome Sequence and Assessment of Safety and Potential Probiotic Traits of Lactobacillus johnsonii CNCM I-4884. Microorganisms 2022; 10:microorganisms10020273. [PMID: 35208728 PMCID: PMC8876136 DOI: 10.3390/microorganisms10020273] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 01/13/2022] [Accepted: 01/21/2022] [Indexed: 12/10/2022] Open
Abstract
The probiotic strain Lactobacillus johnsonii CNCM I-4884 exhibits anti-Giardia activity in vitro and in vivo in a murine model of giardiasis. The aim of this study was the identification and characterization of the probiotic potential of L. johnsonii CNCM I-4884, as well as its safety assessment. This strain was originally classified as Lactobacillus gasseri based on 16S gene sequence analysis. Whole genome sequencing led to a reclassification as L. johnsonii. A genome-wide search for biosynthetic pathways revealed a high degree of auxotrophy, balanced by large transport and catabolic systems. The strain also exhibits tolerance to low pH and bile salts and shows strong bile salt hydrolase (BSH) activity. Sequencing results revealed the absence of antimicrobial resistance genes and other virulence factors. Phenotypic tests confirm that the strain is susceptible to a panel of 8 antibiotics of both human and animal relevance. Altogether, the in silico and in vitro results confirm that L. johnsonii CNCM I-4884 is well adapted to the gastrointestinal environment and could be safely used in probiotic formulations.
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Affiliation(s)
- Anne-Sophie Boucard
- INRAE, AgroParisTech, Micalis Institute, Université Paris-Saclay, 78350 Jouy-en-Josas, France; (A.-S.B.); (P.L.)
| | - Isabelle Florent
- UMR 7245, Muséum National d’Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne Universités, 75005 Paris, France;
| | - Bruno Polack
- Anses, INRAE, Ecole Nationale Vétérinaire d’Alfort, UMR BIPAR, Laboratoire de Santé Animale, 94700 Maisons-Alfort, France;
| | - Philippe Langella
- INRAE, AgroParisTech, Micalis Institute, Université Paris-Saclay, 78350 Jouy-en-Josas, France; (A.-S.B.); (P.L.)
| | - Luis G. Bermúdez-Humarán
- INRAE, AgroParisTech, Micalis Institute, Université Paris-Saclay, 78350 Jouy-en-Josas, France; (A.-S.B.); (P.L.)
- Correspondence: ; Tel.: +33-1-3465-2463
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6
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Mourot L, Schmitt M, Mouray E, Spichty M, Florent I, Albrecht S. Structure-activity relationship and molecular modelling studies of quinazolinedione derivatives MMV665916 as potential antimalarial agent. Bioorg Med Chem 2021; 51:116513. [PMID: 34798379 DOI: 10.1016/j.bmc.2021.116513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 10/11/2021] [Accepted: 10/17/2021] [Indexed: 10/19/2022]
Abstract
A series of new quinazolinedione derivatives have been readily synthesized and evaluated for their in vitro antiplasmodial growth inhibition activity. Most of the compounds inhibited P. falciparum FcB1 strain in the low to medium micromolar concentration. The 2-ethoxy 8ag', 2-trifluoromethoxy 8ai' and 4-fluoro-2-methoxy 8ak' showed the best inhibitory activity with EC50 values around 5 µM and were non-toxic to the primary human fibroblast cell line AB943. However, these compounds were less potent than the original hit MMV665916, which showed remarkable growth inhibition with EC50 value of 0.4 µM and presented the highest selectivity index (SI > 250). In addition, a novel approach for determining the docking poses of these quinazolinedione derivatives with their potential protein target, the P. falciparum farnesyltransferase PfFT, was investigated.
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Affiliation(s)
- Laura Mourot
- Université de Haute-Alsace, Université de Strasbourg, CNRS, LIMA UMR 7042, F-68000 Mulhouse, France
| | - Marjorie Schmitt
- Université de Haute-Alsace, Université de Strasbourg, CNRS, LIMA UMR 7042, F-68000 Mulhouse, France
| | - Elisabeth Mouray
- Unité Molécules de Communication et Adaptation des Micro-organismes, UMR7245, Muséum National d'Histoire Naturelle, CNRS, Sorbonne Universités, Paris, France
| | - Martin Spichty
- Université de Haute-Alsace, Université de Strasbourg, CNRS, LIMA UMR 7042, F-68000 Mulhouse, France
| | - Isabelle Florent
- Unité Molécules de Communication et Adaptation des Micro-organismes, UMR7245, Muséum National d'Histoire Naturelle, CNRS, Sorbonne Universités, Paris, France
| | - Sébastien Albrecht
- Université de Haute-Alsace, Université de Strasbourg, CNRS, LIMA UMR 7042, F-68000 Mulhouse, France.
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Farhat S, Le P, Kayal E, Noel B, Bigeard E, Corre E, Maumus F, Florent I, Alberti A, Aury JM, Barbeyron T, Cai R, Da Silva C, Istace B, Labadie K, Marie D, Mercier J, Rukwavu T, Szymczak J, Tonon T, Alves-de-Souza C, Rouzé P, Van de Peer Y, Wincker P, Rombauts S, Porcel BM, Guillou L. Author Correction to: Rapid protein evolution, organellar reductions, and invasive intronic elements in the marine aerobic parasite dinoflagellate Amoebophrya spp. BMC Biol 2021; 19:209. [PMID: 34551781 PMCID: PMC8459563 DOI: 10.1186/s12915-021-01144-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Sarah Farhat
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France.,School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York, 11794, USA
| | - Phuong Le
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium.,VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Ehsan Kayal
- Sorbonne Université, CNRS, FR2424, Station Biologique de Roscoff, Place Georges Teissier, 29680, Roscoff, France
| | - Benjamin Noel
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Estelle Bigeard
- Sorbonne Université, CNRS, UMR7144 Adaptation et Diversité en Milieu Marin, Ecology of Marine Plankton (ECOMAP), Station Biologique de Roscoff SBR, 29680, Roscoff, France
| | - Erwan Corre
- Sorbonne Université, CNRS, FR2424, Station Biologique de Roscoff, Place Georges Teissier, 29680, Roscoff, France
| | - Florian Maumus
- URGI, INRA, Université Paris-Saclay, 78026, Versailles, France
| | - Isabelle Florent
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR7245), Muséum national d'Histoire naturelle, CNRS, CP 52, 57 rue Cuvier, 75005, Paris, France
| | - Adriana Alberti
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Jean-Marc Aury
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Tristan Barbeyron
- Sorbonne Université, CNRS, UMR 8227, Station Biologique de Roscoff, Place Georges Teissier, 29680, Roscoff, France
| | - Ruibo Cai
- Sorbonne Université, CNRS, UMR7144 Adaptation et Diversité en Milieu Marin, Ecology of Marine Plankton (ECOMAP), Station Biologique de Roscoff SBR, 29680, Roscoff, France
| | - Corinne Da Silva
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Benjamin Istace
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Karine Labadie
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Dominique Marie
- Sorbonne Université, CNRS, UMR7144 Adaptation et Diversité en Milieu Marin, Ecology of Marine Plankton (ECOMAP), Station Biologique de Roscoff SBR, 29680, Roscoff, France
| | - Jonathan Mercier
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Tsinda Rukwavu
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Jeremy Szymczak
- Sorbonne Université, CNRS, FR2424, Station Biologique de Roscoff, Place Georges Teissier, 29680, Roscoff, France.,Sorbonne Université, CNRS, UMR7144 Adaptation et Diversité en Milieu Marin, Ecology of Marine Plankton (ECOMAP), Station Biologique de Roscoff SBR, 29680, Roscoff, France
| | - Thierry Tonon
- Centre for Novel Agricultural Products, Department of Biology, University of York, Heslington, York, YO10 5DD, UK
| | - Catharina Alves-de-Souza
- Algal Resources Collection, MARBIONC, Center for Marine Sciences, University of North Carolina Wilmington, 5600 Marvin K. Moss Lane, Wilmington, NC, 28409, USA
| | - Pierre Rouzé
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium.,VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Yves Van de Peer
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium.,VIB Center for Plant Systems Biology, Ghent, Belgium.,Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria, South Africa
| | - Patrick Wincker
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Stephane Rombauts
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium.,VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Betina M Porcel
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France.
| | - Laure Guillou
- Sorbonne Université, CNRS, UMR7144 Adaptation et Diversité en Milieu Marin, Ecology of Marine Plankton (ECOMAP), Station Biologique de Roscoff SBR, 29680, Roscoff, France.
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Ronzon Q, Zhang W, Casaretto N, Mouray E, Florent I, Nay B. Programmed Multiple C-H Bond Functionalization of the Privileged 4-hydroxyquinoline Template. Chemistry 2021; 27:7764-7772. [PMID: 33848033 DOI: 10.1002/chem.202100929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Indexed: 11/12/2022]
Abstract
The introduction of substituents on bare heterocyclic scaffolds can selectively be achieved by directed C-H functionalization. However, such methods have only occasionally been used, in an iterative manner, to decorate various positions of a medicinal scaffold to build chemical libraries. We herein report the multiple, site selective, metal-catalyzed C-H functionalization of a "programmed" 4-hydroxyquinoline. This medicinally privileged template indeed possesses multiple reactive sites for diversity-oriented functionalization, of which four were targeted. The C-2 and C-8 decorations were directed by an N-oxide, before taking benefit of an O-carbamoyl protection at C-4 to perform a Fries rearrangement and install a carboxamide at C-3. This also released the carbonyl group of 4-quinolones, the ultimate directing group to functionalize position 5. Our study highlights the power of multiple C-H functionalization to generate diversity in a biologically relevant library, after showing its strong antimalarial potential.
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Affiliation(s)
- Quentin Ronzon
- Laboratoire de Synthèse Organique, Ecole Polytechnique, ENSTA, CNRS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - Wei Zhang
- Laboratoire de Synthèse Organique, Ecole Polytechnique, ENSTA, CNRS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - Elisabeth Mouray
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR7245) Muséum national d'Histoire naturelle, CNRS, CP 52, 57 rue Cuvier, 75005, Paris, France
| | - Isabelle Florent
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR7245) Muséum national d'Histoire naturelle, CNRS, CP 52, 57 rue Cuvier, 75005, Paris, France
| | - Bastien Nay
- Laboratoire de Synthèse Organique, Ecole Polytechnique, ENSTA, CNRS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
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9
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Florent I, Chapuis MP, Labat A, Boisard J, Leménager N, Michel B, Desportes-Livage I. Integrative taxonomy confirms that Gregarina garnhami and G. acridiorum (Apicomplexa, Gregarinidae), parasites of Schistocerca gregaria and Locusta migratoria (Insecta, Orthoptera), are distinct species. ACTA ACUST UNITED AC 2021; 28:12. [PMID: 33620310 PMCID: PMC7901526 DOI: 10.1051/parasite/2021009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 02/02/2021] [Indexed: 11/27/2022]
Abstract
Orthoptera are infected by about 60 species of gregarines assigned to the genus Gregarina Dufour, 1828. Among these species, Gregarina garnhami Canning, 1956 from Schistocerca gregaria (Forsskål, 1775) was considered by Lipa et al. in 1996 to be synonymous with Gregarina acridiorum (Léger 1893), a parasite of several orthopteran species including Locusta migratoria (Linné, 1758). Here, a morphological study and molecular analyses of the SSU rDNA marker demonstrate that specimens of S. gregaria and specimens of L. migratoria are infected by two distinct Gregarina species, G. garnhami and G. acridiorum, respectively. Validation of the species confirms that molecular analyses provide useful taxonomical information. Phenotypic plasticity was clearly observed in the case of G. garnhami: the morphology of its trophozoites, gamonts and syzygies varied according to the geographical location of S. gregaria and the subspecies infected.
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Affiliation(s)
- Isabelle Florent
- Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245 CNRS), Département Adaptations du vivant (AVIV), Muséum National d'Histoire Naturelle, CNRS, CP 52, 57 rue Cuvier, 75231 Paris Cedex 05, France
| | - Marie Pierre Chapuis
- CBGP, Univ Montpellier, CIRAD, INRAE, Institut Agro, IRD, 34060 Montpellier, France - CIRAD, UMR CBGP, 34398 Montpellier, France
| | - Amandine Labat
- Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245 CNRS), Département Adaptations du vivant (AVIV), Muséum National d'Histoire Naturelle, CNRS, CP 52, 57 rue Cuvier, 75231 Paris Cedex 05, France
| | - Julie Boisard
- Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245 CNRS), Département Adaptations du vivant (AVIV), Muséum National d'Histoire Naturelle, CNRS, CP 52, 57 rue Cuvier, 75231 Paris Cedex 05, France - Structure et instabilité des génomes (STRING UMR 7196 CNRS/INSERM U1154), Département Adaptations du vivant (AVIV), Muséum National d'Histoire Naturelle, CNRS, INSERM, CP 26, 57 rue Cuvier, 75231 Paris Cedex 05, France
| | - Nicolas Leménager
- CBGP, Univ Montpellier, CIRAD, INRAE, Institut Agro, IRD, 34060 Montpellier, France - CIRAD, UMR CBGP, 34398 Montpellier, France
| | - Bruno Michel
- CBGP, Univ Montpellier, CIRAD, INRAE, Institut Agro, IRD, 34060 Montpellier, France - CIRAD, UMR CBGP, 34398 Montpellier, France
| | - Isabelle Desportes-Livage
- Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245 CNRS), Département Adaptations du vivant (AVIV), Muséum National d'Histoire Naturelle, CNRS, CP 52, 57 rue Cuvier, 75231 Paris Cedex 05, France
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10
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Farhat S, Le P, Kayal E, Noel B, Bigeard E, Corre E, Maumus F, Florent I, Alberti A, Aury JM, Barbeyron T, Cai R, Da Silva C, Istace B, Labadie K, Marie D, Mercier J, Rukwavu T, Szymczak J, Tonon T, Alves-de-Souza C, Rouzé P, Van de Peer Y, Wincker P, Rombauts S, Porcel BM, Guillou L. Rapid protein evolution, organellar reductions, and invasive intronic elements in the marine aerobic parasite dinoflagellate Amoebophrya spp. BMC Biol 2021; 19:1. [PMID: 33407428 PMCID: PMC7789003 DOI: 10.1186/s12915-020-00927-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Accepted: 11/12/2020] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Dinoflagellates are aquatic protists particularly widespread in the oceans worldwide. Some are responsible for toxic blooms while others live in symbiotic relationships, either as mutualistic symbionts in corals or as parasites infecting other protists and animals. Dinoflagellates harbor atypically large genomes (~ 3 to 250 Gb), with gene organization and gene expression patterns very different from closely related apicomplexan parasites. Here we sequenced and analyzed the genomes of two early-diverging and co-occurring parasitic dinoflagellate Amoebophrya strains, to shed light on the emergence of such atypical genomic features, dinoflagellate evolution, and host specialization. RESULTS We sequenced, assembled, and annotated high-quality genomes for two Amoebophrya strains (A25 and A120), using a combination of Illumina paired-end short-read and Oxford Nanopore Technology (ONT) MinION long-read sequencing approaches. We found a small number of transposable elements, along with short introns and intergenic regions, and a limited number of gene families, together contribute to the compactness of the Amoebophrya genomes, a feature potentially linked with parasitism. While the majority of Amoebophrya proteins (63.7% of A25 and 59.3% of A120) had no functional assignment, we found many orthologs shared with Dinophyceae. Our analyses revealed a strong tendency for genes encoded by unidirectional clusters and high levels of synteny conservation between the two genomes despite low interspecific protein sequence similarity, suggesting rapid protein evolution. Most strikingly, we identified a large portion of non-canonical introns, including repeated introns, displaying a broad variability of associated splicing motifs never observed among eukaryotes. Those introner elements appear to have the capacity to spread over their respective genomes in a manner similar to transposable elements. Finally, we confirmed the reduction of organelles observed in Amoebophrya spp., i.e., loss of the plastid, potential loss of a mitochondrial genome and functions. CONCLUSION These results expand the range of atypical genome features found in basal dinoflagellates and raise questions regarding speciation and the evolutionary mechanisms at play while parastitism was selected for in this particular unicellular lineage.
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Affiliation(s)
- Sarah Farhat
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York, 11794, USA
| | - Phuong Le
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Ehsan Kayal
- Sorbonne Université, CNRS, FR2424, Station Biologique de Roscoff, Place Georges Teissier, 29680, Roscoff, France
| | - Benjamin Noel
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Estelle Bigeard
- Sorbonne Université, CNRS, UMR7144 Adaptation et Diversité en Milieu Marin, Ecology of Marine Plankton (ECOMAP), Station Biologique de Roscoff SBR, 29680, Roscoff, France
| | - Erwan Corre
- Sorbonne Université, CNRS, FR2424, Station Biologique de Roscoff, Place Georges Teissier, 29680, Roscoff, France
| | - Florian Maumus
- URGI, INRA, Université Paris-Saclay, 78026, Versailles, France
| | - Isabelle Florent
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR7245), Muséum national d'Histoire naturelle, CNRS, CP 52, 57 rue Cuvier, 75005, Paris, France
| | - Adriana Alberti
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Jean-Marc Aury
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Tristan Barbeyron
- Sorbonne Université, CNRS, UMR 8227, Station Biologique de Roscoff, Place Georges Teissier, 29680, Roscoff, France
| | - Ruibo Cai
- Sorbonne Université, CNRS, UMR7144 Adaptation et Diversité en Milieu Marin, Ecology of Marine Plankton (ECOMAP), Station Biologique de Roscoff SBR, 29680, Roscoff, France
| | - Corinne Da Silva
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Benjamin Istace
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Karine Labadie
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Dominique Marie
- Sorbonne Université, CNRS, UMR7144 Adaptation et Diversité en Milieu Marin, Ecology of Marine Plankton (ECOMAP), Station Biologique de Roscoff SBR, 29680, Roscoff, France
| | - Jonathan Mercier
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Tsinda Rukwavu
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Jeremy Szymczak
- Sorbonne Université, CNRS, FR2424, Station Biologique de Roscoff, Place Georges Teissier, 29680, Roscoff, France
- Sorbonne Université, CNRS, UMR7144 Adaptation et Diversité en Milieu Marin, Ecology of Marine Plankton (ECOMAP), Station Biologique de Roscoff SBR, 29680, Roscoff, France
| | - Thierry Tonon
- Centre for Novel Agricultural Products, Department of Biology, University of York, Heslington, York, YO10 5DD, UK
| | - Catharina Alves-de-Souza
- Algal Resources Collection, MARBIONC, Center for Marine Sciences, University of North Carolina Wilmington, 5600 Marvin K. Moss Lane, Wilmington, NC, 28409, USA
| | - Pierre Rouzé
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Yves Van de Peer
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
- Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria, South Africa
| | - Patrick Wincker
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France
| | - Stephane Rombauts
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Betina M Porcel
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, 91057, Evry, France.
| | - Laure Guillou
- Sorbonne Université, CNRS, UMR7144 Adaptation et Diversité en Milieu Marin, Ecology of Marine Plankton (ECOMAP), Station Biologique de Roscoff SBR, 29680, Roscoff, France.
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11
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Pascual Alonso I, Rivera Méndez L, Valdés-Tresanco ME, Bounaadja L, Schmitt M, Arrebola Sánchez Y, Alvarez Lajonchere L, Charli JL, Florent I. Biochemical evidences for M1-, M17- and M18-like aminopeptidases in marine invertebrates from Cuban coastline. Z NATURFORSCH C 2020; 75:397-407. [PMID: 32609656 DOI: 10.1515/znc-2019-0169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 06/01/2020] [Indexed: 11/15/2022]
Abstract
Metallo-aminopeptidases (mAPs) control many physiological processes. They are classified in different families according to structural similarities. Neutral mAPs catalyze the cleavage of neutral amino acids from the N-terminus of proteins or peptide substrates; they need one or two metallic cofactors in their active site. Information about marine invertebrate's neutral mAPs properties is scarce; available data are mainly derived from genomics and cDNA studies. The goal of this work was to characterize the biochemical properties of the neutral APs activities in eight Cuban marine invertebrate species from the Phyla Mollusca, Porifera, Echinodermata, and Cnidaria. Determination of substrate specificity, optimal pH and effects of inhibitors (1,10-phenanthroline, amastatin, and bestatin) and cobalt on activity led to the identification of distinct neutral AP-like activities, whose biochemical behaviors were similar to those of the M1 and M17 families of mAPs. Additionally, M18-like glutamyl AP activities were detected. Thus, marine invertebrates express biochemical activities likely belonging to various families of metallo-aminopeptidases.
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Affiliation(s)
- Isel Pascual Alonso
- Center for Protein Studies, Faculty of Biology, University of Havana, Havana, Cuba
| | - Laura Rivera Méndez
- Center for Protein Studies, Faculty of Biology, University of Havana, Havana, Cuba
| | - Mario E Valdés-Tresanco
- Center for Protein Studies, Faculty of Biology, University of Havana, Havana, Cuba.,Department of Biological Sciences, University of Calgary, Calgary, Canada
| | - Lotfi Bounaadja
- Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Muséum National d'Histoire Naturelle, CNRS, Paris, France
| | - Marjorie Schmitt
- Laboratoire d'Innovation Moléculaire et Applications - Université de Haute-Alsace, Université de Strasbourg, CNRS, LIMA UMR7042, Mulhouse, France
| | | | - Luis Alvarez Lajonchere
- Museum of Natural History Felipe Poey, Faculty of Biology, University of Havana, Havana, Cuba
| | - Jean-Louis Charli
- Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Mexico
| | - Isabelle Florent
- Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Muséum National d'Histoire Naturelle, CNRS, Paris, France
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12
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Boisard J, Florent I. Why the -omic future of Apicomplexa should include gregarines. Biol Cell 2020; 112:173-185. [PMID: 32176937 DOI: 10.1111/boc.202000006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 03/03/2020] [Accepted: 03/10/2020] [Indexed: 12/15/2022]
Abstract
Gregarines, a polyphyletic group of apicomplexan parasites infecting mostly non-vertebrates hosts, remains poorly known at taxonomic, phylogenetic and genomic levels. However, it represents an essential group for understanding evolutionary history and adaptive capacities of apicomplexan parasites to the remarkable diversity of their hosts. Because they have a mostly extracellular lifestyle, gregarines have developed other cellular developmental forms and host-parasite interactions, compared with their much better studied apicomplexan cousins, intracellular parasites of vertebrates (Hemosporidia, Coccidia, Cryptosporidia). This review highlights the promises offered by the molecular exploration of gregarines, that have been until now left on the side of the road of the comparative -omic exploration of apicomplexan parasites. Elucidating molecular bases for both their ultrastructural, functional and behavioural similarities and differences, compared with those of the typical apicomplexan models, is expected to provide entirely novel clues on the adaptive capacities developed by Apicomplexa over evolution. A challenge remains to identify which gregarines should be explored in priority, as recent metadata from open and host-associated environments have confirmed how underestimated is our current view on true gregarine biodiversity. It is now time to turn to gregarines to widen the currently highly skewed view we have of adaptive mechanisms developed by Apicomplexa.
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Affiliation(s)
- Julie Boisard
- Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Département Adaptations du Vivant (AVIV), Muséum National d'Histoire Naturelle, CNRS, Paris, Cedex 05, France.,Structure et instabilité des génomes (STRING UMR 7196 CNRS / INSERM U1154), Département Adaptations du Vivant (AVIV), Muséum National d'Histoire Naturelle, Paris, Cedex 05, France
| | - Isabelle Florent
- Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Département Adaptations du Vivant (AVIV), Muséum National d'Histoire Naturelle, CNRS, Paris, Cedex 05, France
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13
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Oyegue-Liabagui SL, Imboumy-Limoukou RK, Kouna CL, Bangueboussa F, Schmitt M, Florent I, Lekana-Douki JB. IgG antibody response against Plasmodium falciparum aminopeptidase 1 antigen in Gabonese children living in Makokou and Franceville. Clin Exp Immunol 2020; 200:287-298. [PMID: 32027020 DOI: 10.1111/cei.13425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/15/2020] [Indexed: 11/28/2022] Open
Abstract
The search for novel chemical classes of anti-malarial compounds to cope with the current state of chemoresistance of malaria parasites has led to the identification of Plasmodium falciparum aminopeptidase 1 (PfA-M1) as a new therapeutic target. PfA-M1, known to be involved in the hemoglobin digestion cascade which helps to provide most of the amino acids necessary to the parasite's metabolism, is currently considered as a promising target for anti-malarial chemotherapy. However, its immunogenic properties have not yet been tested in the Gabonese population. In Gabon, the prevalence of malaria remains three times higher in semi-urban areas (60·12%) than in urban areas (17·06%). We show that malaria-specific PfA-M1 antibodies are present in children and increase with the level of infection. Children living in semi-urban areas have higher anti-PfA-M1 antibody titers (0·14 ± 0·02 AU) than those living in urban areas (0·08 ± 0·02 AU, P = 0·03), and their antibody titers increase with age (P < 0·0001). Moreover, anti-PfA-M1 antibody titers decrease in children with hyperparasitemia (0·027 ± 0·055 AU) but they remain high in children with low parasite density (0·21 ± 0·034 AU, P = 0·034). In conclusion, our results suggest that malaria-specific PfA-M1 antibodies may play an important role in the immune response of the host against P. falciparum in Gabonese children. Further studies on the role of PfA-M1 during anemia are needed.
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Affiliation(s)
- S L Oyegue-Liabagui
- Laboratoire de Recherches en Immunologie, Parasitologie et Microbiologie, Ecole Doctorale Régionale d'Afrique Centrale en Infectiologie Tropicale (ECODRAC), Université des Sciences et Techniques de Masuku, Franceville, Gabon
| | - R-K Imboumy-Limoukou
- Unité d'Evolution Epidémiologie et Résistances Parasitaires (UNEEREP), Centre International de Recherches Médicales de Franceville (CIRMF), Franceville, Gabon
| | - C L Kouna
- Unité d'Evolution Epidémiologie et Résistances Parasitaires (UNEEREP), Centre International de Recherches Médicales de Franceville (CIRMF), Franceville, Gabon
| | - F Bangueboussa
- Laboratoire de Recherches en Immunologie, Parasitologie et Microbiologie, Ecole Doctorale Régionale d'Afrique Centrale en Infectiologie Tropicale (ECODRAC), Université des Sciences et Techniques de Masuku, Franceville, Gabon.,Unité d'Evolution Epidémiologie et Résistances Parasitaires (UNEEREP), Centre International de Recherches Médicales de Franceville (CIRMF), Franceville, Gabon
| | - M Schmitt
- Université de Haute-Alsace, Université de Strasbourg, Mulhouse, France
| | - I Florent
- Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Muséum National d'Histoire Naturelle, Paris, France
| | - J B Lekana-Douki
- Unité d'Evolution Epidémiologie et Résistances Parasitaires (UNEEREP), Centre International de Recherches Médicales de Franceville (CIRMF), Franceville, Gabon.,Département de Parasitologie-Mycologie, Université des Sciences de la Santé, Libreville, Gabon
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14
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Salomon E, Schmitt M, Marapaka AK, Stamogiannos A, Revelant G, Schmitt C, Alavi S, Florent I, Addlagatta A, Stratikos E, Tarnus C, Albrecht S. Aminobenzosuberone Scaffold as a Modular Chemical Tool for the Inhibition of Therapeutically Relevant M1 Aminopeptidases. Molecules 2018; 23:molecules23102607. [PMID: 30314342 PMCID: PMC6222927 DOI: 10.3390/molecules23102607] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 10/08/2018] [Accepted: 10/10/2018] [Indexed: 01/22/2023] Open
Abstract
The synthesis of racemic substituted 7-amino-5,7,8,9-tetrahydrobenzocyclohepten-6-one hydrochlorides was optimized to enhance reproducibility and increase the overall yield. In order to investigate their specificity, series of enzyme inhibition assays were carried out against a diversity of proteases, covering representative members of aspartic, cysteine, metallo and serine endopeptidases and including eight members of the monometallic M1 family of aminopeptidases as well as two members of the bimetallic M17 and M28 aminopeptidase families. This aminobenzosuberone scaffold indeed demonstrated selective inhibition of M1 aminopeptidases to the exclusion of other tested protease families; it was particularly potent against mammalian APN and its bacterial/parasitic orthologues EcPepN and PfAM1.
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Affiliation(s)
- Emmanuel Salomon
- Laboratoire d'Innovation Moléculaire et Applications, Université de Haute-Alsace, Université de Strasbourg, CNRS, 68093 Mulhouse, France.
| | - Marjorie Schmitt
- Laboratoire d'Innovation Moléculaire et Applications, Université de Haute-Alsace, Université de Strasbourg, CNRS, 68093 Mulhouse, France.
| | - Anil Kumar Marapaka
- Centre for Chemical Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India.
- Academy of Scientific and Innovative Research (AcSIR), Rafi Marg, New Dehli 110001, India.
| | - Athanasios Stamogiannos
- Protein Chemistry Laboratory, INRASTES, National Centre for Scientific Research Demokritos, Agia Paraskevi, 15310 Athens, Greece.
| | - Germain Revelant
- Laboratoire d'Innovation Moléculaire et Applications, Université de Haute-Alsace, Université de Strasbourg, CNRS, 68093 Mulhouse, France.
| | - Céline Schmitt
- Laboratoire d'Innovation Moléculaire et Applications, Université de Haute-Alsace, Université de Strasbourg, CNRS, 68093 Mulhouse, France.
| | - Sarah Alavi
- Laboratoire d'Innovation Moléculaire et Applications, Université de Haute-Alsace, Université de Strasbourg, CNRS, 68093 Mulhouse, France.
| | - Isabelle Florent
- Molécules de Communication et Adaptation des Micro-organismes, Muséum National d'Histoire Naturelle, CNRS, 75231 Paris, France.
| | - Anthony Addlagatta
- Centre for Chemical Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India.
- Academy of Scientific and Innovative Research (AcSIR), Rafi Marg, New Dehli 110001, India.
| | - Efstratios Stratikos
- Protein Chemistry Laboratory, INRASTES, National Centre for Scientific Research Demokritos, Agia Paraskevi, 15310 Athens, Greece.
| | - Céline Tarnus
- Laboratoire d'Innovation Moléculaire et Applications, Université de Haute-Alsace, Université de Strasbourg, CNRS, 68093 Mulhouse, France.
| | - Sébastien Albrecht
- Laboratoire d'Innovation Moléculaire et Applications, Université de Haute-Alsace, Université de Strasbourg, CNRS, 68093 Mulhouse, France.
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15
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Farhat S, Florent I, Noel B, Kayal E, Da Silva C, Bigeard E, Alberti A, Labadie K, Corre E, Aury JM, Rombauts S, Wincker P, Guillou L, Porcel BM. Comparative Time-Scale Gene Expression Analysis Highlights the Infection Processes of Two Amoebophrya Strains. Front Microbiol 2018; 9:2251. [PMID: 30333799 PMCID: PMC6176090 DOI: 10.3389/fmicb.2018.02251] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 09/04/2018] [Indexed: 01/31/2023] Open
Abstract
Understanding factors that generate, maintain, and constrain host-parasite associations is of major interest to biologists. Although little studied, many extremely virulent micro-eukaryotic parasites infecting microalgae have been reported in the marine plankton. This is the case for Amoebophrya, a diverse and highly widespread group of Syndiniales infecting and potentially controlling dinoflagellate populations. Here, we analyzed the time-scale gene expression of a complete infection cycle of two Amoebophrya strains infecting the same host (the dinoflagellate Scrippsiella acuminata), but diverging by their host range (one infecting a single host, the other infecting more than one species). Over two-thirds of genes showed two-fold differences in expression between at least two sampled stages of the Amoebophrya life cycle. Genes related to carbohydrate metabolism as well as signaling pathways involving proteases and transporters were overexpressed during the free-living stage of the parasitoid. Once inside the host, all genes related to transcription and translation pathways were actively expressed, suggesting the rapid and extensive protein translation needed following host-cell invasion. Finally, genes related to cellular division and components of the flagellum organization were overexpressed during the sporont stage. In order to gain a deeper understanding of the biological basis of the host-parasitoid interaction, we screened proteins involved in host-cell recognition, invasion, and protection against host-defense identified in model apicomplexan parasites. Very few of the genes encoding critical components of the parasitic lifestyle of apicomplexans could be unambiguously identified as highly expressed in Amoebophrya. Genes related to the oxidative stress response were identified as highly expressed in both parasitoid strains. Among them, the correlated expression of superoxide dismutase/ascorbate peroxidase in the specialist parasite was consistent with previous studies on Perkinsus marinus defense. However, this defense process could not be identified in the generalist Amoebophrya strain, suggesting the establishment of different strategies for parasite protection related to host specificity.
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Affiliation(s)
- Sarah Farhat
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, Evry, France
| | - Isabelle Florent
- Communication Molecules and Adaptation of Microorganisms, National Museum of Natural History, CNRS, Paris, France
| | - Benjamin Noel
- Genoscope, Institut François Jacob, CEA, Evry, France
| | - Ehsan Kayal
- Sorbonne Universités, Université Pierre et Marie Curie-Paris 6, CNRS, UMR 7144, Station Biologique de Roscoff, Roscoff, France
| | | | - Estelle Bigeard
- Sorbonne Universités, Université Pierre et Marie Curie-Paris 6, CNRS, UMR 7144, Station Biologique de Roscoff, Roscoff, France
| | | | | | - Erwan Corre
- Sorbonne Universités, Université Pierre et Marie Curie-Paris 6, CNRS, UMR 7144, Station Biologique de Roscoff, Roscoff, France
| | | | - Stephane Rombauts
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Patrick Wincker
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, Evry, France
| | - Laure Guillou
- Sorbonne Universités, Université Pierre et Marie Curie-Paris 6, CNRS, UMR 7144, Station Biologique de Roscoff, Roscoff, France
| | - Betina M Porcel
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Université Paris-Saclay, Evry, France
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16
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Escotte-Binet S, Huguenin A, Aubert D, Martin AP, Kaltenbach M, Florent I, Villena I. Metallopeptidases of Toxoplasma gondii: in silico identification and gene expression. ACTA ACUST UNITED AC 2018; 25:26. [PMID: 29737275 PMCID: PMC5939537 DOI: 10.1051/parasite/2018025] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 04/16/2018] [Indexed: 12/17/2022]
Abstract
Metallopeptidases are a family of proteins with domains that remain highly conserved throughout evolution. These hydrolases require divalent metal cation(s) to activate the water molecule in order to carry out their catalytic action on peptide bonds by nucleophilic attack. Metallopeptidases from parasitic protozoa, including Toxoplasma, are investigated because of their crucial role in parasite biology. In the present study, we screened the T. gondii database using PFAM motifs specific for metallopeptidases in association with the MEROPS peptidase Database (release 10.0). In all, 49 genes encoding proteins with metallopeptidase signatures were identified in the Toxoplasma genome. An Interpro Search enabled us to uncover their domain/motif organization, and orthologs with the highest similarity by BLAST were used for annotation. These 49 Toxoplasma metallopeptidases clustered into 15 families described in the MEROPS database. Experimental expression analysis of their genes in the tachyzoite stage revealed transcription for all genes studied. Further research on the role of these peptidases should increase our knowledge of basic Toxoplasma biology and provide opportunities to identify novel therapeutic targets. This type of study would also open a path towards the comparative biology of apicomplexans.
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Affiliation(s)
- Sandie Escotte-Binet
- EA 7510, ESCAPE, Laboratory of Parasitology-Mycology, University of Reims Champagne-Ardenne, 51100 Reims, France - Laboratory of Parasitology-Mycology, Toxoplasmosis National Reference Center, Toxoplasma Biological Resource Center, Maison Blanche Hospital, 51100 Reims, France
| | - Antoine Huguenin
- EA 7510, ESCAPE, Laboratory of Parasitology-Mycology, University of Reims Champagne-Ardenne, 51100 Reims, France - Laboratory of Parasitology-Mycology, Toxoplasmosis National Reference Center, Toxoplasma Biological Resource Center, Maison Blanche Hospital, 51100 Reims, France
| | - Dominique Aubert
- EA 7510, ESCAPE, Laboratory of Parasitology-Mycology, University of Reims Champagne-Ardenne, 51100 Reims, France - Laboratory of Parasitology-Mycology, Toxoplasmosis National Reference Center, Toxoplasma Biological Resource Center, Maison Blanche Hospital, 51100 Reims, France
| | - Anne-Pascaline Martin
- EA 7510, ESCAPE, Laboratory of Parasitology-Mycology, University of Reims Champagne-Ardenne, 51100 Reims, France
| | - Matthieu Kaltenbach
- EA 7510, ESCAPE, Laboratory of Parasitology-Mycology, University of Reims Champagne-Ardenne, 51100 Reims, France
| | - Isabelle Florent
- UMR7245 CNRS-MNHN, National Museum of Natural History, Department Adaptations of the Living, 75005 Paris, France
| | - Isabelle Villena
- EA 7510, ESCAPE, Laboratory of Parasitology-Mycology, University of Reims Champagne-Ardenne, 51100 Reims, France - Laboratory of Parasitology-Mycology, Toxoplasmosis National Reference Center, Toxoplasma Biological Resource Center, Maison Blanche Hospital, 51100 Reims, France
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17
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Allain T, Chaouch S, Thomas M, Travers MA, Valle I, Langella P, Grellier P, Polack B, Florent I, Bermúdez-Humarán LG. Bile Salt Hydrolase Activities: A Novel Target to Screen Anti- Giardia Lactobacilli? Front Microbiol 2018; 9:89. [PMID: 29472903 PMCID: PMC5809405 DOI: 10.3389/fmicb.2018.00089] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 01/15/2018] [Indexed: 01/23/2023] Open
Abstract
Giardia duodenalis is a protozoan parasite responsible for giardiasis, a disease characterized by intestinal malabsorption, diarrhea and abdominal pain in a large number of mammal species. Giardiasis is one of the most common intestinal parasitic diseases in the world and thus a high veterinary, and public health concern. It is well-established that some probiotic bacteria may confer protection against this parasite in vitro and in vivo and we recently documented the implication of bile-salt hydrolase (BSH)-like activities from strain La1 of Lactobacillus johnsonii as mediators of these effects in vitro. We showed that these activities were able to generate deconjugated bile salts that were toxic to the parasite. In the present study, a wide collection of lactobacilli strains from different ecological origins was screened to assay their anti-giardial effects. Our results revealed that the anti-parasitic effects of some of the strains tested were well-correlated with the expression of BSH-like activities. The two most active strains in vitro, La1 and Lactobacillus gasseri CNCM I-4884, were then tested for their capacity to influence G. duodenalis infection in a suckling mice model. Strikingly, only L. gasseri CNCM I-4884 strain was able to significantly antagonize parasite growth with a dramatic reduction of the trophozoites load in the small intestine. Moreover, this strain also significantly reduced the fecal excretion of Giardia cysts after 5 days of treatment, which could contribute to blocking the transmission of the parasite, in contrast of La1 where no effect was observed. This study represents a step toward the development of new prophylactic strategies to combat G. duodenalis infection in both humans and animals.
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Affiliation(s)
- Thibault Allain
- INRA, Commensal and Probiotics-Host Interactions Laboratory, Micalis Institute, AgroParisTech, Paris, France.,UMR 7245, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne Universités, Paris, France
| | - Soraya Chaouch
- UMR 7245, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne Universités, Paris, France
| | - Myriam Thomas
- INRA, Ecole Nationale Vétérinaire d'Alfort, BIPAR, ENVA, ANSES, UMR, Université Paris-Est, Champs-sur-Marne, France.,INRA, Laboratoire de Santé Animale, BIPAR, ENVA, ANSES, UMR, Maisons-Alfort, France
| | - Marie-Agnès Travers
- UMR 7245, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne Universités, Paris, France
| | - Isabelle Valle
- INRA, Ecole Nationale Vétérinaire d'Alfort, BIPAR, ENVA, ANSES, UMR, Université Paris-Est, Champs-sur-Marne, France.,INRA, Laboratoire de Santé Animale, BIPAR, ENVA, ANSES, UMR, Maisons-Alfort, France
| | - Philippe Langella
- INRA, Commensal and Probiotics-Host Interactions Laboratory, Micalis Institute, AgroParisTech, Paris, France
| | - Philippe Grellier
- UMR 7245, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne Universités, Paris, France
| | - Bruno Polack
- INRA, Ecole Nationale Vétérinaire d'Alfort, BIPAR, ENVA, ANSES, UMR, Université Paris-Est, Champs-sur-Marne, France.,INRA, Laboratoire de Santé Animale, BIPAR, ENVA, ANSES, UMR, Maisons-Alfort, France
| | - Isabelle Florent
- UMR 7245, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne Universités, Paris, France
| | - Luis G Bermúdez-Humarán
- INRA, Commensal and Probiotics-Host Interactions Laboratory, Micalis Institute, AgroParisTech, Paris, France
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18
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Allain T, Chaouch S, Thomas M, Vallée I, Buret AG, Langella P, Grellier P, Polack B, Bermúdez-Humarán LG, Florent I. Bile-Salt-Hydrolases from the Probiotic Strain Lactobacillus johnsonii La1 Mediate Anti-giardial Activity in Vitro and in Vivo. Front Microbiol 2018; 8:2707. [PMID: 29472895 PMCID: PMC5810305 DOI: 10.3389/fmicb.2017.02707] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 12/29/2017] [Indexed: 01/10/2023] Open
Abstract
Giardia duodenalis (syn. G. lamblia, G. intestinalis) is the protozoan parasite responsible for giardiasis, the most common and widely spread intestinal parasitic disease worldwide, affecting both humans and animals. After cysts ingestion (through either contaminated food or water), Giardia excysts in the upper intestinal tract to release replicating trophozoites that are responsible for the production of symptoms. In the gut, Giardia cohabits with the host's microbiota, and several studies have revealed the importance of this gut ecosystem and/or some probiotic bacteria in providing protection against G. duodenalis infection through mechanisms that remain incompletely understood. Recent findings suggest that Bile-Salt-Hydrolase (BSH)-like activities from the probiotic strain of Lactobacillus johnsonii La1 may contribute to the anti-giardial activity displayed by this strain. Here, we cloned and expressed each of the three bsh genes present in the L. johnsonii La1 genome to study their enzymatic and biological properties. While BSH47 and BSH56 were expressed as recombinant active enzymes, no significant enzymatic activity was detected with BSH12. In vitro assays allowed determining the substrate specificities of both BSH47 and BSH56, which were different. Modeling of these BSHs indicated a strong conservation of their 3-D structures despite low conservation of their primary structures. Both recombinant enzymes were able to mediate anti-giardial biological activity against Giardia trophozoites in vitro. Moreover, BSH47 exerted significant anti-giardial effects when tested in a murine model of giardiasis. These results shed new light on the mechanism, whereby active BSH derived from the probiotic strain Lactobacillus johnsonii La1 may yield anti-giardial effects in vitro and in vivo. These findings pave the way toward novel approaches for the treatment of this widely spread but neglected infectious disease, both in human and in veterinary medicine.
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Affiliation(s)
- Thibault Allain
- Commensal and Probiotics-Host Interactions Laboratory, Micalis Institute, Institut National de la Recherche Agronomique, AgroParisTech, Jouy-en-Josas, France.,UMR7245, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne-Universités, Paris, France
| | - Soraya Chaouch
- UMR7245, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne-Universités, Paris, France
| | - Myriam Thomas
- JRU BIPAR, ANSES, Ecole Nationale Vétérinaire d'Alfort, INRA, Université Paris-Est, Animal Health Laboratory, Maisons-Alfort, France
| | - Isabelle Vallée
- JRU BIPAR, ANSES, Ecole Nationale Vétérinaire d'Alfort, INRA, Université Paris-Est, Animal Health Laboratory, Maisons-Alfort, France
| | - André G Buret
- Department of Biological Sciences, University of Calgary, Calgary, AB, Canada
| | - Philippe Langella
- Commensal and Probiotics-Host Interactions Laboratory, Micalis Institute, Institut National de la Recherche Agronomique, AgroParisTech, Jouy-en-Josas, France
| | - Philippe Grellier
- UMR7245, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne-Universités, Paris, France
| | - Bruno Polack
- JRU BIPAR, Ecole Nationale Vétérinaire d'Alfort, ANSES, INRA, Université Paris-Est, Maisons-Alfort, France
| | - Luis G Bermúdez-Humarán
- Commensal and Probiotics-Host Interactions Laboratory, Micalis Institute, Institut National de la Recherche Agronomique, AgroParisTech, Jouy-en-Josas, France
| | - Isabelle Florent
- UMR7245, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne-Universités, Paris, France
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19
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Pascual I, Valiente PA, García G, Valdés-Tresanco ME, Arrebola Y, Díaz L, Bounaadja L, Uribe RM, Pacheco MC, Florent I, Charli JL. Discovery of novel non-competitive inhibitors of mammalian neutral M1 aminopeptidase (APN). Biochimie 2017; 142:216-225. [PMID: 28964831 PMCID: PMC7127808 DOI: 10.1016/j.biochi.2017.09.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 09/22/2017] [Indexed: 12/17/2022]
Abstract
Neutral metallo-aminopeptidase (APN) catalyzes the cleavage of neutral and basic amino acids from the N-terminus of protein or peptide substrates. APN expression is dysregulated in inflammatory diseases as well as in several types of cancer. Therefore, inhibitors of APN may be effective against cancer and inflammation. By virtual screening and enzymatic assays, we identified three non-competitive inhibitors (α > 1) of the porcine and human APN with Ki values in the μM range. These non-peptidic compounds lack the classical zinc-binding groups (ZBG) present in most of the APN inhibitors. Molecular docking simulations suggested the novel inhibitors suppress APN activity by an alternative mechanism to Zn coordination: they interacted with residues comprising the S1 and S5′ subsites of APN. Of note, these compounds also inhibited the porcine aminopeptidase A (pAPA) using a competitive inhibition mode. This indicated differences in the binding mode of these compounds with APN and APA. Based on sequence and structural analyses, we predicted the significance of targeting human APN residues: Ala-351, Arg-442, Ala-474, Phe-896 and Asn-900 for improving the selectivity of the identified compounds. Remarkably, the intraperitoneal injection of compounds BTB07018 and JFD00064 inhibited APN activity in rat brain, liver and kidney indicating good bio-distribution of these inhibitors in vivo. These data reinforce the idea of designing novel APN inhibitors based on lead compounds without ZBG. We identified three non-competitive inhibitors of the human and porcine APN. These compounds lack the classical zinc-binding groups of the APN inhibitors. We proposed these molecules block APN by an alternative mechanism to Zn chelation. All the inhibitors interact with APN residues comprising the S1 and S5′ subsites. Two compounds blocked the APN activity in the brain, liver and kidney of rats.
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Affiliation(s)
- Isel Pascual
- Center for Protein Studies, Faculty of Biology, University of Havana, Cuba.
| | - Pedro A Valiente
- Center for Protein Studies, Faculty of Biology, University of Havana, Cuba.
| | - Gabriela García
- Center for Protein Studies, Faculty of Biology, University of Havana, Cuba.
| | | | - Yarini Arrebola
- Center for Protein Studies, Faculty of Biology, University of Havana, Cuba.
| | - Lisset Díaz
- Center for Protein Studies, Faculty of Biology, University of Havana, Cuba.
| | - Lotfi Bounaadja
- Molécules de Communication et Adaptation des Microorganismes, (MCAM, UMR 7245), Muséum National Histoire Naturelle, Sorbonne Universités, CNRS, CP 52, 57 Rue Cuvier, 75005, Paris, France.
| | - Rosa María Uribe
- Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Ave Universidad 2001, Cuernavaca, Morelos, Mexico.
| | | | - Isabelle Florent
- Molécules de Communication et Adaptation des Microorganismes, (MCAM, UMR 7245), Muséum National Histoire Naturelle, Sorbonne Universités, CNRS, CP 52, 57 Rue Cuvier, 75005, Paris, France.
| | - Jean-Louis Charli
- Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Ave Universidad 2001, Cuernavaca, Morelos, Mexico.
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20
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Bounaadja L, Schmitt M, Albrecht S, Mouray E, Tarnus C, Florent I. Selective inhibition of PfA-M1, over PfA-M17, by an amino-benzosuberone derivative blocks malaria parasites development in vitro and in vivo. Malar J 2017; 16:382. [PMID: 28934959 PMCID: PMC5609037 DOI: 10.1186/s12936-017-2032-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 09/18/2017] [Indexed: 01/09/2023] Open
Abstract
Background Plasmodium falciparum M1 family aminopeptidase is currently considered as a promising target for anti-malarial chemotherapy. Several series of inhibitors developed by various research groups display IC50/Ki values down to nM range on native PfA-M1 or recombinant forms and block the parasite development in culture at µM to sub-µM concentrations. A handful of these inhibitors has been tested on murine models of malaria and has shown anti plasmodial in vivo activity. However, most of these inhibitors do also target the other neutral malarial aminopeptidase, PfA-M17, often with lower Ki values, which questions the relative involvement and importance of each enzyme in the parasite biology. Results An amino-benzosuberone derivative from a previously published collection of chemicals targeting specifically the M1-aminopeptidases has been identified; it is highly potent on PfA-M1 (Ki = 50 nM) and devoid of inhibitory activity on PfA-M17 (no inhibition up to 100 µM). This amino-benzosuberone derivative (T5) inhibits, in the µM range, the in vitro growth of two P. falciparum strains, 3D7 and FcB1, respectively chloroquino-sensitive and resistant. Evaluated in vivo, on the murine non-lethal model of malaria Plasmodium chabaudi chabaudi, this amino-benzosuberone derivative was able to reduce the parasite burden by 44 and 40% in a typical 4-day Peters assay at a daily dose of 12 and 24 mg/kg by intraperitoneal route of administration. Conclusions The evaluation of a highly selective inhibitor of PfA-M1, over PfA-M17, active on Plasmodium parasites in vitro and in vivo, highlights the relevance of PfA-M1 in the biological development of the parasite as well as in the list of promising anti-malarial targets to be considered in combination with current or future anti-malarial drugs. Electronic supplementary material The online version of this article (doi:10.1186/s12936-017-2032-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Lotfi Bounaadja
- Molécules de Communication et Adaptation des Microorganismes, (MCAM, UMR7245), Muséum National Histoire Naturelle, Sorbonne Universités, CNRS, CP 52, 57 Rue Cuvier, 75005, Paris, France
| | - Marjorie Schmitt
- Laboratoire de Chimie Moléculaire, CNRS-UMR7509, Université de Strasbourg, 67037, Strasbourg Cedex 2, France
| | - Sébastien Albrecht
- Laboratoire de Chimie Organique et Bioorganique, EA4566, Université de Haute Alsace, 68093, Mulhouse Cedex, France
| | - Elisabeth Mouray
- Molécules de Communication et Adaptation des Microorganismes, (MCAM, UMR7245), Muséum National Histoire Naturelle, Sorbonne Universités, CNRS, CP 52, 57 Rue Cuvier, 75005, Paris, France
| | - Céline Tarnus
- Laboratoire de Chimie Organique et Bioorganique, EA4566, Université de Haute Alsace, 68093, Mulhouse Cedex, France
| | - Isabelle Florent
- Molécules de Communication et Adaptation des Microorganismes, (MCAM, UMR7245), Muséum National Histoire Naturelle, Sorbonne Universités, CNRS, CP 52, 57 Rue Cuvier, 75005, Paris, France.
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González-Bacerio J, Maluf SEC, Méndez Y, Pascual I, Florent I, Melo PMS, Budu A, Ferreira JC, Moreno E, Carmona AK, Rivera DG, Alonso Del Rivero M, Gazarini ML. KBE009: An antimalarial bestatin-like inhibitor of the Plasmodium falciparum M1 aminopeptidase discovered in an Ugi multicomponent reaction-derived peptidomimetic library. Bioorg Med Chem 2017; 25:4628-4636. [PMID: 28728898 DOI: 10.1016/j.bmc.2017.06.047] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 06/23/2017] [Accepted: 06/27/2017] [Indexed: 10/19/2022]
Abstract
Malaria is a global human parasitic disease mainly caused by the protozoon Plasmodium falciparum. Increased parasite resistance to current drugs determines the relevance of finding new treatments against new targets. A novel target is the M1 alanyl-aminopeptidase from P. falciparum (PfA-M1), which is essential for parasite development in human erythrocytes and is inhibited by the pseudo-peptide bestatin. In this work, we used a combinatorial multicomponent approach to produce a library of peptidomimetics and screened it for the inhibition of recombinant PfA-M1 (rPfA-M1) and the in vitro growth of P. falciparum erythrocytic stages (3D7 and FcB1 strains). Dose-response studies with selected compounds allowed identifying the bestatin-based peptidomimetic KBE009 as a submicromolar rPfA-M1 inhibitor (Ki=0.4μM) and an in vitro antimalarial compound as potent as bestatin (IC50=18μM; without promoting erythrocyte lysis). At therapeutic-relevant concentrations, KBE009 is selective for rPfA-M1 over porcine APN (a model of these enzymes from mammals), and is not cytotoxic against HUVEC cells. Docking simulations indicate that this compound binds PfA-M1 without Zn2+ coordination, establishing mainly hydrophobic interactions and showing a remarkable shape complementarity with the active site of the enzyme. Moreover, KBE009 inhibits the M1-type aminopeptidase activity (Ala-7-amido-4-methylcoumarin substrate) in isolated live parasites with a potency similar to that of the antimalarial activity (IC50=82μM), strongly suggesting that the antimalarial effect is directly related to the inhibition of the endogenous PfA-M1. These results support the value of this multicomponent strategy to identify PfA-M1 inhibitors, and make KBE009 a promising hit for drug development against malaria.
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Affiliation(s)
- Jorge González-Bacerio
- Centro de Estudio de Proteínas, Facultad de Biología, Universidad de La Habana, Calle 25 #455 entre I y J, 10400, Vedado, La Habana, Cuba.
| | - Sarah El Chamy Maluf
- Departamento de Biofísica, Universidade Federal de São Paulo, Rua Pedro de Toledo, 669, 7 andar, 04039-032, Vila Mariana, São Paulo, Brazil.
| | - Yanira Méndez
- Centro de Estudio de Productos Naturales, Facultad de Química, Universidad de La Habana, Zapata y G, 10400 La Habana, Cuba.
| | - Isel Pascual
- Centro de Estudio de Proteínas, Facultad de Biología, Universidad de La Habana, Calle 25 #455 entre I y J, 10400, Vedado, La Habana, Cuba.
| | - Isabelle Florent
- Unité Molécules de Communication et Adaptation des Microorganismes, (MCAM, UMR 7245), Sorbonne Universités, Muséum National Histoire Naturelle, CNRS, CP 52, 57 Rue Cuvier, 75005 Paris, France.
| | - Pollyana M S Melo
- Departamento de Biofísica, Universidade Federal de São Paulo, Rua Pedro de Toledo, 669, 7 andar, 04039-032, Vila Mariana, São Paulo, Brazil.
| | - Alexandre Budu
- Departamento de Biofísica, Universidade Federal de São Paulo, Rua Pedro de Toledo, 669, 7 andar, 04039-032, Vila Mariana, São Paulo, Brazil.
| | - Juliana C Ferreira
- Departamento de Biofísica, Universidade Federal de São Paulo, Rua Pedro de Toledo, 669, 7 andar, 04039-032, Vila Mariana, São Paulo, Brazil.
| | - Ernesto Moreno
- Centro de Inmunología Molecular, Calle 15 esq. 216, Siboney, Playa, La Habana, Cuba; Universidad de Medellín, Carrera 87 #30-65, Medellín, Colombia.
| | - Adriana K Carmona
- Departamento de Biofísica, Universidade Federal de São Paulo, Rua Pedro de Toledo, 669, 7 andar, 04039-032, Vila Mariana, São Paulo, Brazil.
| | - Daniel G Rivera
- Centro de Estudio de Productos Naturales, Facultad de Química, Universidad de La Habana, Zapata y G, 10400 La Habana, Cuba.
| | - Maday Alonso Del Rivero
- Centro de Estudio de Proteínas, Facultad de Biología, Universidad de La Habana, Calle 25 #455 entre I y J, 10400, Vedado, La Habana, Cuba.
| | - Marcos L Gazarini
- Departamento de Biociências, Universidade Federal de São Paulo, R. Silva Jardim, 136, 11015-020, Vila Mathias, Santos, São Paulo, Brazil.
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22
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Bichet M, Touquet B, Gonzalez V, Florent I, Meissner M, Tardieux I. Genetic impairment of parasite myosin motors uncovers the contribution of host cell membrane dynamics to Toxoplasma invasion forces. BMC Biol 2016; 14:97. [PMID: 27829452 PMCID: PMC5101828 DOI: 10.1186/s12915-016-0316-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 10/08/2016] [Indexed: 12/31/2022] Open
Abstract
Background The several-micrometer-sized Toxoplasma gondii protozoan parasite invades virtually any type of nucleated cell from a warm-blooded animal within seconds. Toxoplasma initiates the formation of a tight ring-like junction bridging its apical pole with the host cell membrane. The parasite then actively moves through the junction into a host cell plasma membrane invagination that delineates a nascent vacuole. Recent high resolution imaging and kinematics analysis showed that the host cell cortical actin dynamics occurs at the site of entry while gene silencing approaches allowed motor-deficient parasites to be generated, and suggested that the host cell could contribute energetically to invasion. In this study we further investigate this possibility by analyzing the behavior of parasites genetically impaired in different motor components, and discuss how the uncovered mechanisms illuminate our current understanding of the invasion process by motor-competent parasites. Results By simultaneously tracking host cell membrane and cortex dynamics at the site of interaction with myosin A-deficient Toxoplasma, the junction assembly step could be decoupled from the engagement of the Toxoplasma invasive force. Kinematics combined with functional analysis revealed that myosin A-deficient Toxoplasma had a distinct host cell-dependent mode of entry when compared to wild-type or myosin B/C-deficient Toxoplasma. Following the junction assembly step, the host cell formed actin-driven membrane protrusions that surrounded the myosin A-deficient mutant and drove it through the junction into a typical vacuole. However, this parasite-entry mode appeared suboptimal, with about 40 % abortive events for which the host cell membrane expansions failed to cover the parasite body and instead could apply deleterious compressive forces on the apical pole of the zoite. Conclusions This study not only clarifies the key contribution of T. gondii tachyzoite myosin A to the invasive force, but it also highlights a new mode of entry for intracellular microbes that shares early features of macropinocytosis. Given the harmful potential of the host cell compressive forces, we propose to consider host cell invasion by zoites as a balanced combination between host cell membrane dynamics and the Toxoplasma motor function. In this light, evolutionary shaping of myosin A with fast motor activity could have contributed to optimize the invasive potential of Toxoplasma tachyzoites and thereby their fitness. Electronic supplementary material The online version of this article (doi:10.1186/s12915-016-0316-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Marion Bichet
- Institute for Advanced Biosciences, Team Cell & Membrane Dynamics of Host-Parasite Interactions, INSERM U1209, 38000, Grenoble, France.,CNRS UMR5309, 38000, Grenoble, France.,Université Grenoble Alpes, 38000, Grenoble, France.,Institut Cochin, INSERM U1016, CNRS, UMR8104, Université Paris Descartes, Sorbonne Paris Cité, 75015, Paris, France
| | - Bastien Touquet
- Institute for Advanced Biosciences, Team Cell & Membrane Dynamics of Host-Parasite Interactions, INSERM U1209, 38000, Grenoble, France.,CNRS UMR5309, 38000, Grenoble, France.,Université Grenoble Alpes, 38000, Grenoble, France
| | - Virginie Gonzalez
- Institut Cochin, INSERM U1016, CNRS, UMR8104, Université Paris Descartes, Sorbonne Paris Cité, 75015, Paris, France
| | - Isabelle Florent
- Museum National d'Histoire Naturelle, CNRS UMR7245, Sorbonne Université, 75005, Paris, France
| | - Markus Meissner
- Wellcome Trust Centre for Molecular Parasitology, Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, UK
| | - Isabelle Tardieux
- Institute for Advanced Biosciences, Team Cell & Membrane Dynamics of Host-Parasite Interactions, INSERM U1209, 38000, Grenoble, France. .,CNRS UMR5309, 38000, Grenoble, France. .,Université Grenoble Alpes, 38000, Grenoble, France. .,Institut Cochin, INSERM U1016, CNRS, UMR8104, Université Paris Descartes, Sorbonne Paris Cité, 75015, Paris, France.
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Imboumy-Limoukou RK, Oyegue-Liabagui SL, Ndidi S, Pegha-Moukandja I, Kouna CL, Galaway F, Florent I, Lekana-Douki JB. Comparative Antibody Responses Against three Antimalarial Vaccine Candidate Antigens from Urban and Rural Exposed Individuals in Gabon. Eur J Microbiol Immunol (Bp) 2016; 6:287-297. [PMID: 27980857 PMCID: PMC5146647 DOI: 10.1556/1886.2016.00027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 08/15/2016] [Indexed: 12/12/2022] Open
Abstract
The analysis of immune responses in diverse malaria endemic regions provides more information to understand the host's immune response to Plasmodium falciparum. Several plasmodial antigens have been reported as targets of human immunity. PfAMA1 is one of most studied vaccine candidates; PfRH5 and Pf113 are new promising vaccine candidates. The aim of this study was to evaluate humoral response against these three antigens among children of Lastourville (rural area) and Franceville (urban area). Malaria was diagnosed using rapid diagnosis tests. Plasma samples were tested against these antigens by enzyme-linked immunosorbent assay (ELISA). We found that malaria prevalence was five times higher in the rural area than in the urban area (p < 0.0001). The anti-PfAMA1 and PfRh5 response levels were significantly higher in Lastourville than in Franceville (p < 0.0001; p = 0.005). The anti-AMA1 response was higher than the anti-Pf113 response, which in turn was higher than the anti-PfRh5 response in both sites. Anti-PfAMA1 levels were significantly higher in infected children than those in uninfected children (p = 0.001) in Franceville. Anti-Pf113 and anti-PfRh5 antibody levels were lowest in children presenting severe malarial anemia. These three antigens are targets of immunity in Gabon. Further studies on the role of Pf113 in antimalarial protection against severe anemia are needed.
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Affiliation(s)
- Roméo-Karl Imboumy-Limoukou
- Unité de Parasitologie Médicale (UPARAM), Centre International de Recherches Médicales de Franceville (CIRMF), BP 769 Franceville, Gabon; Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Sorbonne Universités, Muséum National d'Histoire Naturelle, CNRS, CP52, 57 rue Cuvier 75005 Paris, France; Ecole Doctorale Régionale en Infectiologie Tropicale d'Afrique Centrale (ECODRAC), BP 876 Franceville, Gabon
| | - Sandrine Lydie Oyegue-Liabagui
- Laboratoire de Recherches en Immunologie, Parasitologie et Microbiologie, Ecole Doctorale Régionale en Infectiologie Tropicale d'Afrique Centrale (ECODRAC) , BP 876 Franceville, Gabon
| | - Stella Ndidi
- Unité de Parasitologie Médicale (UPARAM), Centre International de Recherches Médicales de Franceville (CIRMF) , BP 769 Franceville, Gabon
| | - Irène Pegha-Moukandja
- Unité de Parasitologie Médicale (UPARAM), Centre International de Recherches Médicales de Franceville (CIRMF), BP 769 Franceville, Gabon; Ecole Doctorale Régionale en Infectiologie Tropicale d'Afrique Centrale (ECODRAC), BP 876 Franceville, Gabon
| | - Charlene Lady Kouna
- Unité de Parasitologie Médicale (UPARAM), Centre International de Recherches Médicales de Franceville (CIRMF) , BP 769 Franceville, Gabon
| | | | - Isabelle Florent
- Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Sorbonne Universités, Muséum National d'Histoire Naturelle, CNRS, CP52 , 57 rue Cuvier 75005 Paris, France
| | - Jean Bernard Lekana-Douki
- Unité de Parasitologie Médicale (UPARAM), Centre International de Recherches Médicales de Franceville (CIRMF), BP 769 Franceville, Gabon; Département de Parasitologie-Mycologie, Université des Sciences de la Santé, BP 4008 Libreville, Gabon
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Imboumy-Limoukou RK, Maghendi-Nzondo S, Kouna CL, Bounaadja L, Mbang S, Biteghe JC, Eboumbou C, Prugnolle F, Florent I, Lekana-Douki JB. Immunoglobulin response to the low polymorphic Pf113 antigen in children from Lastoursville, South-East of Gabon. Acta Trop 2016; 163:149-56. [PMID: 27523305 DOI: 10.1016/j.actatropica.2016.08.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 08/08/2016] [Accepted: 08/11/2016] [Indexed: 02/03/2023]
Abstract
Pf113 is a P. falciparum putatively GPI-anchored protein that has been so far localized at the surface of merozoites, suggesting it could interact with RBC surface during merozoite invasion. Previous studies conducted in Papua New Guinea and in Kenya have revealed that this protein is recognized by natural antibodies in individuals living in malaria-endemic areas and is associated with protective immunity in malaria, further supporting the potential of Pf113 for the development of anti-malaria vaccines. However, in Central Africa, no study on the immunogenicity of this protein has been conducted. Here, we report the characterization of the Pf113 immune response in 103 children by Enzyme-Linked Immunoabsorbent Assay (ELISA), using a recombinant form of Pf113 expressed in Escherichia coli, together with the study of the Pf113 polymorphism, after amplification and sequencing of 40 field isolates. Data showed that almost 51% of the studied individuals had positive antibody responses to the recombinant Pf113 protein, and that IgG subclass response was dominated by IgG3 (84%) followed by IgG1 (50%). Surprisingly the prevalence of IgG4 was 92%. In addition, gene analysis in field isolates from this region indicated that Pf113 was not highly polymorphic, in particular regarding high-activity binding peptides (HABPs). Our data reinforce the idea that Pf113 may be considered for inclusion in multicomponent blood-stage vaccines.
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Affiliation(s)
- Roméo Karl Imboumy-Limoukou
- Centre International de Recherches Médicales de Franceville (CIRMF), Unité de Parasitologie Médicale (UPARAM), BP 769 Franceville, Gabon; Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Sorbonne Universités, Muséum National d'Histoire Naturelle, CNRS, CP52, 57 Rue Cuvier, 75005 Paris, France; Ecole Doctorale Régionale en Infectiologie Tropicale d'Afrique Centrale (ECODRAC), BP 876 Franceville, Gabon.
| | - Sidney Maghendi-Nzondo
- Centre International de Recherches Médicales de Franceville (CIRMF), Unité de Parasitologie Médicale (UPARAM), BP 769 Franceville, Gabon
| | - Charlene Lady Kouna
- Centre International de Recherches Médicales de Franceville (CIRMF), Unité de Parasitologie Médicale (UPARAM), BP 769 Franceville, Gabon
| | - Lotfi Bounaadja
- Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Sorbonne Universités, Muséum National d'Histoire Naturelle, CNRS, CP52, 57 Rue Cuvier, 75005 Paris, France
| | - Sophie Mbang
- Faculty of Medicine and Pharmaceutical Sciences, University of Douala Biological Sciences Unit, BP 2701 Douala, Cameroon
| | - Jean Claude Biteghe
- Centre International de Recherches Médicales de Franceville (CIRMF), Unité de Parasitologie Médicale (UPARAM), BP 769 Franceville, Gabon; Ecole Doctorale Régionale en Infectiologie Tropicale d'Afrique Centrale (ECODRAC), BP 876 Franceville, Gabon
| | - Carole Eboumbou
- Faculty of Medicine and Pharmaceutical Sciences, University of Douala Biological Sciences Unit, BP 2701 Douala, Cameroon
| | - Franck Prugnolle
- Centre International de Recherches Médicales de Franceville (CIRMF), Unité de Parasitologie Médicale (UPARAM), BP 769 Franceville, Gabon; UMR 5290 MIVEGEC (CNRS/IRD/UM), BP, 911 Avenue Agropolis BP 64501, 34394 Montpellier cedex 5, France
| | - Isabelle Florent
- Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Sorbonne Universités, Muséum National d'Histoire Naturelle, CNRS, CP52, 57 Rue Cuvier, 75005 Paris, France
| | - Jean-Bernard Lekana-Douki
- Centre International de Recherches Médicales de Franceville (CIRMF), Unité de Parasitologie Médicale (UPARAM), BP 769 Franceville, Gabon; Département de Parasitologie-Mycologie Médecine Tropicale, Faculté de Médecine, Université des Sciences de la Santé, BP 4009 Libreville, Gabon.
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Travers MA, Sow C, Zirah S, Deregnaucourt C, Chaouch S, Queiroz RML, Charneau S, Allain T, Florent I, Grellier P. Deconjugated Bile Salts Produced by Extracellular Bile-Salt Hydrolase-Like Activities from the Probiotic Lactobacillus johnsonii La1 Inhibit Giardia duodenalis In vitro Growth. Front Microbiol 2016; 7:1453. [PMID: 27729900 PMCID: PMC5037171 DOI: 10.3389/fmicb.2016.01453] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 08/31/2016] [Indexed: 12/15/2022] Open
Abstract
Giardiasis, currently considered a neglected disease, is caused by the intestinal protozoan parasite Giardia duodenalis and is widely spread in human as well as domestic and wild animals. The lack of appropriate medications and the spread of resistant parasite strains urgently call for the development of novel therapeutic strategies. Host microbiota or certain probiotic strains have the capacity to provide some protection against giardiasis. By combining biological and biochemical approaches, we have been able to decipher a molecular mechanism used by the probiotic strain Lactobacillus johnsonii La1 to prevent Giardia growth in vitro. We provide evidence that the supernatant of this strain contains active principle(s) not directly toxic to Giardia but able to convert non-toxic components of bile into components highly toxic to Giardia. By using bile acid profiling, these components were identified as deconjugated bile-salts. A bacterial bile-salt-hydrolase of commercial origin was able to mimic the properties of the supernatant. Mass spectrometric analysis of the bacterial supernatant identified two of the three bile-salt-hydrolases encoded in the genome of this probiotic strain. These observations document a possible mechanism by which L. johnsonii La1, by secreting, or releasing BSH-like activity(ies) in the vicinity of replicating Giardia in an environment where bile is present and abundant, can fight this parasite. This discovery has both fundamental and applied outcomes to fight giardiasis, based on local delivery of deconjugated bile salts, enzyme deconjugation of bile components, or natural or recombinant probiotic strains that secrete or release such deconjugating activities in a compartment where both bile salts and Giardia are present.
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Affiliation(s)
- Marie-Agnès Travers
- Laboratoire de Génétique et Pathologie des Mollusques Marins, Unité SG2M, IFREMER La Tremblade, France
| | - Cissé Sow
- MCAM UMR 7245, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne Universités Paris, France
| | - Séverine Zirah
- MCAM UMR 7245, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne Universités Paris, France
| | - Christiane Deregnaucourt
- MCAM UMR 7245, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne Universités Paris, France
| | - Soraya Chaouch
- MCAM UMR 7245, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne Universités Paris, France
| | - Rayner M L Queiroz
- Department of Cell Biology, Institute of Biology, University of Brasilia Brasília, Brazil
| | - Sébastien Charneau
- Department of Cell Biology, Institute of Biology, University of Brasilia Brasília, Brazil
| | - Thibault Allain
- MCAM UMR 7245, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne UniversitésParis, France; UMR 1319, Commensal and Probiotics-Host Interactions Laboratory, INRA, AgroParisTechJouy en Josas, France
| | - Isabelle Florent
- MCAM UMR 7245, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne Universités Paris, France
| | - Philippe Grellier
- MCAM UMR 7245, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Sorbonne Universités Paris, France
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Souidenne D, Florent I, Dellinger M, Justine JL, Romdhane MS, Furuya H, Grellier P. Diversity of apostome ciliates, Chromidina spp. (Oligohymenophorea, Opalinopsidae), parasites of cephalopods of the Mediterranean Sea. ACTA ACUST UNITED AC 2016; 23:33. [PMID: 27530149 PMCID: PMC4988119 DOI: 10.1051/parasite/2016033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 08/03/2016] [Indexed: 11/14/2022]
Abstract
Chromidina spp. are enigmatic apostome ciliates (Oligohymenophorea, Opalinopsidae) that parasitise the renal and pancreatic appendages of cephalopods. Only four species have been described, among which only three have been formally named. No DNA sequence has been reported so far. To investigate Chromidina spp. diversity, we sampled cephalopods in the Mediterranean Sea off Tunis, Tunisia, and identified two distinct Chromidina spp. in two different host species: Loligo vulgaris and Sepia officinalis. From haematoxylin-stained slides, we described morphological traits for these parasitic species and compared them to previous descriptions. We also re-described the morphology of Chromidina elegans (Foettinger, 1881) from Chatton and Lwoff’s original materials and designated a neohapantotype and paraneohapantotypes for this species. We describe a new species, Chromidina chattoni Souidenne, Florent and Grellier n. sp., found in L. vulgaris off Tunisia, and evidence for a probable novel species, found in S. officinalis off Tunisia, although this latter species presents similarities to some morphological stages previously described for Chromidina cortezi Hochberg, 1971. We amplified, for the first time, an 18S rDNA marker for these two Chromidina species. Phylogenetic analysis supports the association of Chromidina within apostome ciliates. Genetic distance analysis between 18S rDNA sequences of representative apostomes indicates Pseudocollinia as the most closely related genus to Chromidina.
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Affiliation(s)
- Dhikra Souidenne
- UMR 7245 CNRS MCAM, Muséum National d'Histoire Naturelle, Sorbonne Universités, CP 52, 57 rue Cuvier, 75005 Paris, France - UR03AGRO1 Ecosystèmes et Ressources Aquatiques, Institut National Agronomique de Tunisie, 43 avenue Charles Nicolle, 1082 Tunis, Tunisia
| | - Isabelle Florent
- UMR 7245 CNRS MCAM, Muséum National d'Histoire Naturelle, Sorbonne Universités, CP 52, 57 rue Cuvier, 75005 Paris, France
| | - Marc Dellinger
- UMR 7245 CNRS MCAM, Muséum National d'Histoire Naturelle, Sorbonne Universités, CP 52, 57 rue Cuvier, 75005 Paris, France
| | - Jean Lou Justine
- ISYEB, Institut de Systématique, Évolution, Biodiversité (UMR7205 CNRS, EPHE, MNHN, UPMC), Muséum National d'Histoire Naturelle, Sorbonne Universités, CP 51, 55 rue Buffon, 75005 Paris, France
| | - Mohamed Salah Romdhane
- UR03AGRO1 Ecosystèmes et Ressources Aquatiques, Institut National Agronomique de Tunisie, 43 avenue Charles Nicolle, 1082 Tunis, Tunisia
| | - Hidetaka Furuya
- Department of Biology, Graduate School of Science, Osaka University, 1-1 Machikaneyama, 560-0043 Toyonaka, Osaka, Japan
| | - Philippe Grellier
- UMR 7245 CNRS MCAM, Muséum National d'Histoire Naturelle, Sorbonne Universités, CP 52, 57 rue Cuvier, 75005 Paris, France
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Schrével J, Valigurová A, Prensier G, Chambouvet A, Florent I, Guillou L. Ultrastructure of Selenidium pendula, the Type Species of Archigregarines, and Phylogenetic Relations to Other Marine Apicomplexa. Protist 2016; 167:339-368. [PMID: 27423403 DOI: 10.1016/j.protis.2016.06.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 05/30/2016] [Accepted: 06/12/2016] [Indexed: 01/16/2023]
Abstract
Archigregarines, an early branching lineage within Apicomplexa, are a poorly-known group of invertebrate parasites. By their phylogenetic position, archigregarines are an important lineage to understand the functional transition that occurred between free-living flagellated predators to obligatory parasites in Apicomplexa. In this study, we provide new ultrastructural data and phylogenies based on SSU rDNA sequences using the type species of archigregarines, the Selenidiidae Selenidium pendulaGiard, 1884. We describe for the first time the syzygy and early gamogony at the ultrastructural level, revealing a characteristic nuclear multiplication with centrocones, cryptomitosis, filamentous network of chromatin, a cyst wall secretion and a 9+0 flagellar axoneme of the male gamete. S. pendula belongs to a monophyletic lineage that includes several other related species, all infecting Sedentaria Polychaeta (Spionidae, Sabellaridae, Sabellidae and Cirratulidae). All of these Selenidium species exhibit similar biological characters: a cell cortex with the plasma membrane - inner membrane complex - subpellicular microtubule sets, an apical complex with the conoid, numerous rhoptries and micronemes, a myzocytosis with large food vacuoles, a nuclear multiplication during syzygy and young gamonts. Two other distantly related Selenidium-like lineages infect Terebellidae and Sipunculida, underlying the ability of archigregarines to parasite a wide range of marine hosts.
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Affiliation(s)
- Joseph Schrével
- Unité Molécules de Communication et Adaptation des Microorganismes, (MCAM, UMR 7245), Muséum National Histoire Naturelle, Sorbonne Universités, CNRS, CP 52, 57 Rue Cuvier, 75005 Paris, France.
| | - Andrea Valigurová
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Gérard Prensier
- Cell Biology and Electron Microscopy Laboratory, François Rabelais University, 10 Boulevard Tonnellé, BP 3223, 37032 Tours Cedex, France
| | - Aurélie Chambouvet
- Laboratoire des Sciences de l'Environnement Marin (LEMAR), UMR6539 UBO/CNRS/IRD/IFREMER, Institut Universitaire Européen de la Mer (IUEM), Technopole Brest Iroise, 29280 Plouzané, France
| | - Isabelle Florent
- Unité Molécules de Communication et Adaptation des Microorganismes, (MCAM, UMR 7245), Muséum National Histoire Naturelle, Sorbonne Universités, CNRS, CP 52, 57 Rue Cuvier, 75005 Paris, France
| | - Laure Guillou
- Sorbonne Universités, Université Pierre et Marie Curie - Paris 6, CNRS, UMR 7144, Station Biologique de Roscoff, Place Georges Teissier, CS90074, 29688 Roscoff cedex, France
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Allain T, Mansour NM, Bahr MMA, Martin R, Florent I, Langella P, Bermúdez-Humarán LG. A new lactobacilli in vivo expression system for the production and delivery of heterologous proteins at mucosal surfaces. FEMS Microbiol Lett 2016; 363:fnw117. [PMID: 27190148 DOI: 10.1093/femsle/fnw117] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2016] [Indexed: 12/21/2022] Open
Abstract
Food-grade lactic acid bacteria, such as lactobacilli, represent good candidates for the development of mucosal vectors. Indeed, they are generally recognized as safe microorganisms and some strains display beneficial effects (probiotics). In this study, we described a new lactobacilli in vivo expression (LIVE) system for the production and delivery of therapeutic molecules at mucosal surfaces. The versatility and functionality of this system was successfully validated in several lactobacilli species; furthermore, we assessed in vivo LIVE system in two different mouse models of human pathologies: (i) a model of therapy against intestinal inflammation (inflammatory bowel diseases) and (ii) a model of vaccination against dental caries. We demonstrated that Lactobacillus gasseri expressing the anti-inflammatory cytokine IL-10 under LIVE system efficiently delivered the recombinant protein at mucosal surfaces and display anti-inflammatory effects. In the vaccination model against caries, LIVE system allowed the heterologous expression of Streptococcus mutans antigen GbpB by L. gasseri, leading to a stimulation of the host immune response.
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Affiliation(s)
- Thibault Allain
- Micalis Institute, INRA, AgroParisTech, Paris-Saclay University, Domaine de Vilvert, 78350 Jouy-en-Josas, France Team Adaptation of Protozoa to their Environment, UMR 7245 CNRS, National Museum of Natural History, CP52, 61 rue Buffon, 75231 Paris Cedex 05, France
| | - Nahla M Mansour
- Gut Microbiology and Immunology Group, Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries Research Division, National Research Centre, 33 El Bohouth St. (former El Tahrir St.), Dokki 12622, Cairo, Egypt
| | - May M A Bahr
- Gut Microbiology and Immunology Group, Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries Research Division, National Research Centre, 33 El Bohouth St. (former El Tahrir St.), Dokki 12622, Cairo, Egypt
| | - Rebeca Martin
- Micalis Institute, INRA, AgroParisTech, Paris-Saclay University, Domaine de Vilvert, 78350 Jouy-en-Josas, France
| | - Isabelle Florent
- Team Adaptation of Protozoa to their Environment, UMR 7245 CNRS, National Museum of Natural History, CP52, 61 rue Buffon, 75231 Paris Cedex 05, France
| | - Philippe Langella
- Micalis Institute, INRA, AgroParisTech, Paris-Saclay University, Domaine de Vilvert, 78350 Jouy-en-Josas, France
| | - Luis G Bermúdez-Humarán
- Micalis Institute, INRA, AgroParisTech, Paris-Saclay University, Domaine de Vilvert, 78350 Jouy-en-Josas, France
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Nuter F, Dimé AKD, Chen C, Bounaadja L, Mouray E, Florent I, Six Y, Buriez O, Marinetti A, Voituriez A. Access to new endoperoxide derivatives by electrochemical oxidation of substituted 3-azabicyclo[4.1.0]hept-4-enes. Chemistry 2015; 21:5584-93. [PMID: 25703453 DOI: 10.1002/chem.201406138] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Indexed: 11/11/2022]
Abstract
A series of substituted 3-azabicyclo[4.1.0]hept-4-ene derivatives were prepared and analysed by cyclic voltammetry. Preparative aerobic electrochemical oxidation reactions were then carried out. Three original endoperoxides were isolated, characterised and subjected to antimalarial and cytotoxicity activity assays.
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Affiliation(s)
- Frédérick Nuter
- Institut de Chimie des Substances Naturelles, (CNRS) UPR 2301, Centre de Recherche de Gif - 1, av. de la Terrasse, 91198 Gif-sur-Yvette (France)
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Liew LP, Fleming JM, Longeon A, Mouray E, Florent I, Bourguet-Kondracki ML, Copp BR. Synthesis of 1-indolyl substituted β-carboline natural products and discovery of antimalarial and cytotoxic activities. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.068] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ghouila A, Florent I, Guerfali FZ, Terrapon N, Laouini D, Yahia SB, Gascuel O, Bréhélin L. Identification of divergent protein domains by combining HMM-HMM comparisons and co-occurrence detection. PLoS One 2014; 9:e95275. [PMID: 24901648 PMCID: PMC4046975 DOI: 10.1371/journal.pone.0095275] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 03/26/2014] [Indexed: 01/03/2023] Open
Abstract
Identification of protein domains is a key step for understanding protein function. Hidden Markov Models (HMMs) have proved to be a powerful tool for this task. The Pfam database notably provides a large collection of HMMs which are widely used for the annotation of proteins in sequenced organisms. This is done via sequence/HMM comparisons. However, this approach may lack sensitivity when searching for domains in divergent species. Recently, methods for HMM/HMM comparisons have been proposed and proved to be more sensitive than sequence/HMM approaches in certain cases. However, these approaches are usually not used for protein domain discovery at a genome scale, and the benefit that could be expected from their utilization for this problem has not been investigated. Using proteins of P. falciparum and L. major as examples, we investigate the extent to which HMM/HMM comparisons can identify new domain occurrences not already identified by sequence/HMM approaches. We show that although HMM/HMM comparisons are much more sensitive than sequence/HMM comparisons, they are not sufficiently accurate to be used as a standalone complement of sequence/HMM approaches at the genome scale. Hence, we propose to use domain co-occurrence — the general domain tendency to preferentially appear along with some favorite domains in the proteins — to improve the accuracy of the approach. We show that the combination of HMM/HMM comparisons and co-occurrence domain detection boosts protein annotations. At an estimated False Discovery Rate of 5%, it revealed 901 and 1098 new domains in Plasmodium and Leishmania proteins, respectively. Manual inspection of part of these predictions shows that it contains several domain families that were missing in the two organisms. All new domain occurrences have been integrated in the EuPathDomains database, along with the GO annotations that can be deduced.
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Affiliation(s)
- Amel Ghouila
- Institut de Biologie Computationnelle, LIRMM, CNRS, Univ. Montpellier 2, Montpellier, France
- Computer Science Department, Faculty of Sciences of Tunis, Tunis, Tunisia
| | - Isabelle Florent
- Centre National de la Recherche Scientifique/Muséum National d'Histoire Naturelle, UMR7245 CNRS-MNHN, Molécules de Communication et Adaptation des Micro-organismes, Adaptation des Protozoaires à leur Environnent, Paris, France
| | - Fatma Zahra Guerfali
- Institut Pasteur de Tunis, LR11IPT02, Laboratory of Transmission, Control and Immunobiology of Infections (LTCII), Tunis-Belvédère, Tunisia
- Université Tunis El Manar, Tunis, Tunisia
| | - Nicolas Terrapon
- Centre National de la Recherche Scientifique, Aix-Marseille Université, CNRS UMR 7257, AFMB, Marseille, France
| | - Dhafer Laouini
- Institut Pasteur de Tunis, LR11IPT02, Laboratory of Transmission, Control and Immunobiology of Infections (LTCII), Tunis-Belvédère, Tunisia
- Université Tunis El Manar, Tunis, Tunisia
| | - Sadok Ben Yahia
- Computer Science Department, Faculty of Sciences of Tunis, Tunis, Tunisia
| | - Olivier Gascuel
- Institut de Biologie Computationnelle, LIRMM, CNRS, Univ. Montpellier 2, Montpellier, France
| | - Laurent Bréhélin
- Institut de Biologie Computationnelle, LIRMM, CNRS, Univ. Montpellier 2, Montpellier, France
- * E-mail:
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Namukobe J, Kiremire BT, Byamukama R, Kasenene JM, Dumontet V, Guéritte F, Krief S, Florent I, Kabasa JD. Cycloartane triterpenes from the leaves of Neoboutonia macrocalyx L. Phytochemistry 2014; 102:189-196. [PMID: 24680168 DOI: 10.1016/j.phytochem.2014.02.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 01/16/2014] [Accepted: 02/03/2014] [Indexed: 06/03/2023]
Abstract
Neoboutonia macrocalyx is used by people in south western Uganda around Kibale National Park in the treatment of malaria. Phytochemical investigation on the leaves of this plant led to the isolation of nine cycloartane triterpenes (1-9) and one phenanthrene; 7-methoxy-2,8 dimethyl-9,10-dihydrophenantherene-3,6 diol (10) along with three known compounds which included 22-de-O-acetyl-26-deoxyneoboutomellerone (11), mellerin B (12) and 6-hydroxystigmast-4-en-3-one (13). The chemical structures of the compounds were established mainly through a combination of spectroscopic techniques. The isolated compounds were evaluated for antiplasmodial activity against the chloroquine-resistant FcB1/Colombia strain of Plasmodium falciparum and for cytotoxicity against the KB (nasopharyngeal epidermoid carcinoma) and MRC-5 (human diploid embryonic lung) cells. Seven out of 13 compounds exhibited good antiplasmodial activity with IC50 of ⩽5μg/ml with two compounds exhibiting low cytotoxicity and five compounds having significant cytotoxicity.
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Affiliation(s)
- Jane Namukobe
- Department of Chemistry, Makerere University, P.O. Box 7062, Kampala, Uganda
| | - Bernard T Kiremire
- Department of Chemistry, Makerere University, P.O. Box 7062, Kampala, Uganda.
| | - Robert Byamukama
- Department of Chemistry, Makerere University, P.O. Box 7062, Kampala, Uganda
| | - John M Kasenene
- Mountain of the Moon University, P.O. Box 837, Fort Portal, Uganda
| | - Vincent Dumontet
- Institut de Chimie des Substances Naturelles, CNRS - Avenue de la Terresse, 91198 Gif-sur-Yvette, France
| | - Françoise Guéritte
- Institut de Chimie des Substances Naturelles, CNRS - Avenue de la Terresse, 91198 Gif-sur-Yvette, France
| | - Sabrina Krief
- Eco-Anthropologie et Ethnobiologie, UMR 7206, MNHN, 43 rue Buffon, 75005 Paris, France; Sebitoli Chimpanzee Project, GACP UWA Camp, Kibale NP, Fort Portal, Uganda
| | - Isabelle Florent
- National Museum Natural History, UMR 7245, CNRS, CP 52, 61 rue Buffon, 75231 Paris Cedex 05, France
| | - John D Kabasa
- College of Veterinary Medicine, Animal Resources and Biosecurity, P.O. Box 7062, Kampala, Uganda
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Namukobe J, Kiremire B, Byamukama R, Kasenene J, Dumontet V, Guéritte F, Krief S, Florent I, Kabasa J. Nouveaux triterpènes à activité antiplasmodiale isolés des feuilles de Neoboutonia macrocalyx L., une plante consommée par les chimpanzés du parc national de Kibale (Ouganda). primatologie 2013. [DOI: 10.4000/primatologie.1295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Dupont S, Carré-Mlouka A, Descarrega F, Ereskovsky A, Longeon A, Mouray E, Florent I, Bourguet-Kondracki ML. Diversity and biological activities of the bacterial community associated with the marine sponge Phorbas tenacior (Porifera, Demospongiae). Lett Appl Microbiol 2013; 58:42-52. [PMID: 24033393 DOI: 10.1111/lam.12154] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 08/27/2013] [Accepted: 08/27/2013] [Indexed: 12/16/2022]
Abstract
UNLABELLED The diversity of the cultivable microbiota of the marine sponge Phorbas tenacior frequently found in the Mediterranean Sea was investigated, and its potential as a source of antimicrobial, antioxidant and antiplasmodial compounds was evaluated. The cultivable bacterial community was studied by isolation, cultivation and 16S rRNA gene sequencing. Twenty-three bacterial strains were isolated and identified in the Proteobacteria (α or γ classes) and Actinobacteria phyla. Furthermore, three different bacterial morphotypes localized extracellularly within the sponge tissues were revealed by microscopic observations. Bacterial strains were assigned to seven different genera, namely Vibrio, Photobacterium, Shewanella, Pseudomonas, Ruegeria, Pseudovibrio and Citricoccus. The strains affiliated to the same genus were differentiated according to their genetic dissimilarities using random amplified polymorphic DNA (RAPD) analyses. Eleven bacterial strains were selected for evaluation of their bioactivities. Three isolates Pseudovibrio P1Ma4, Vibrio P1MaNal1 and Citricoccus P1S7 revealed antimicrobial activity; Citricoccus P1S7 and Vibrio P1MaNal1 isolates also exhibited antiplasmodial activity, while two Vibrio isolates P1Ma8 and P1Ma5 displayed antioxidant activity. These data confirmed the importance of Proteobacteria and Actinobacteria associated with marine sponges as a reservoir of bioactive compounds. SIGNIFICANCE AND IMPACT OF THE STUDY This study presents the first report on the diversity of the cultivable bacteria associated with the marine sponge Phorbas tenacior, frequently found in the Mediterranean Sea. Evaluation of the antiplasmodial, antimicrobial and antioxidant activities of the isolates has been investigated and allowed to select bacterial strains, confirming the importance of Proteobacteria and Actinobacteria as sources of bioactive compounds.
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Affiliation(s)
- S Dupont
- Laboratoire Molécules de Communication et Adaptation des Micro-organismes, UMR 7245 CNRS, Muséum National d'Histoire Naturelle, Paris, France
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David-Bosne S, Florent I, Lund-Winther AM, Hansen JB, Buch-Pedersen M, Machillot P, le Maire M, Jaxel C. Antimalarial screening via large-scale purification of Plasmodium falciparum Ca2+-ATPase 6 and in vitro studies. FEBS J 2013; 280:5419-29. [PMID: 23497141 DOI: 10.1111/febs.12244] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 02/18/2013] [Accepted: 03/11/2013] [Indexed: 02/04/2023]
Abstract
The most severe form of human malaria is caused by the parasite Plasmodium falciparum. Despite the current need, there is no effective vaccine and parasites are becoming resistant to most of the antimalarials available. Therefore, there is an urgent need to discover new drugs from targets that have not yet suffered from drug pressure with the aim of overcoming the problem of new emerging resistance. Membrane transporters, such as P. falciparum Ca(2+)-ATPase 6 (PfATP6), the P. falciparum sarcoplasmic/endoplasmic reticulum Ca(2+)-ATPase (SERCA), have been proposed as potentially good antimalarial targets. The present investigation focuses on: (a) the large-scale purification of PfATP6 for maintenance of its enzymatic activity; (b) screening for PfATP6 inhibitors from a compound library; and (c) the selection of the best inhibitors for further tests on P. falciparum growth in vitro. We managed to heterologously express in yeast and purify an active form of PfATP6 as previously described, although in larger amounts. In addition to some classical SERCA inhibitors, a chemical library of 1680 molecules was screened. From these, we selected a pool of the 20 most potent inhibitors of PfATP6, presenting half maximal inhibitory concentration values in the range 1-9 μm. From these, eight were chosen for evaluation of their effect on P. falciparum growth in vitro, and the best compound presented a half maximal inhibitory concentration of ~ 2 μm. We verified the absence of an inhibitory effect of most of the compounds on mammalian SERCA1a, representing a potential advantage in terms of human toxicity. The present study describes a multidisciplinary approach allowing the selection of promising PfATP6-specific inhibitors with good antimalarial activity.
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Deprez-Poulain R, Flipo M, Piveteau C, Leroux F, Dassonneville S, Florent I, Maes L, Cos P, Deprez B. Structure-activity relationships and blood distribution of antiplasmodial aminopeptidase-1 inhibitors. J Med Chem 2012; 55:10909-17. [PMID: 23176597 DOI: 10.1021/jm301506h] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Malaria is a severe infectious disease that causes between 655,000 and 1.2 million deaths annually. To overcome the resistance to current drugs, new biological targets are needed for drug development. Aminopeptidase M1 (PfAM1), a zinc metalloprotease, has been proposed as a new drug target to fight malaria. Herein, we disclosed the structure-activity relationships of a selective family of hydroxamate PfAM1 inhibitors based on the malonic template. In particular, we performed a "fluoro-scanning" around hit 1 that enlightened the key positions of the halogen for activity. The docking of the best inhibitor 2 is consistent with in vitro results. The stability of 2 was evaluated in microsomes, in plasma, and toward glutathione. The in vivo distribution study performed with the nanomolar hydroxamate inhibitor 2 (BDM14471) revealed that it reaches its site of action. However, it fails to kill the parasite at concentrations relevant to the enzymatic inhibitory potency, suggesting that killing the parasite remains a challenge for potent and druglike catalytic-site binding PfAM1 inhibitors. In all, this study provides important insights for the design of inhibitors of PfAM1 and the validity of this target.
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Affiliation(s)
- Rebecca Deprez-Poulain
- INSERM U761, Biostructures and Drug Discovery and Faculté de Pharmacie, Université Lille Nord de France, 3 rue du Pr Laguesse, Lille F-59000, France.
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Travers MA, Florent I, Kohl L, Grellier P. Probiotics for the control of parasites: an overview. J Parasitol Res 2011; 2011:610769. [PMID: 21966589 PMCID: PMC3182331 DOI: 10.1155/2011/610769] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2011] [Revised: 07/11/2011] [Accepted: 07/11/2011] [Indexed: 12/29/2022] Open
Abstract
Probiotics are defined as live organisms, which confer benefits to the host. Their efficiency was demonstrated for the treatment of gastrointestinal disorders, respiratory infections, and allergic symptoms, but their use is mostly limited to bacterial and viral diseases. During the last decade, probiotics as means for the control of parasite infections were reported covering mainly intestinal diseases but also some nongut infections, that are all of human and veterinary importance. In most cases, evidence for a beneficial effect was obtained by studies using animal models. In a few cases, cellular interactions between probiotics and pathogens or relevant host cells were also investigated using in vitro culture systems. However, molecular mechanisms mediating the beneficial effects are as yet poorly understood. These studies indicate that probiotics might indeed provide a strain-specific protection against parasites, probably through multiple mechanisms. But more unravelling studies are needed to justify probiotic utilisation in therapeutics.
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Affiliation(s)
- Marie-Agnès Travers
- Team Adaptation of Protozoa to their Environment, UMR 7245 CNRS, National Museum of Natural History, CP52, 61 rue Buffon, 75231 Paris Cedex 05, France
| | - Isabelle Florent
- Team Adaptation of Protozoa to their Environment, UMR 7245 CNRS, National Museum of Natural History, CP52, 61 rue Buffon, 75231 Paris Cedex 05, France
| | - Linda Kohl
- Team Adaptation of Protozoa to their Environment, UMR 7245 CNRS, National Museum of Natural History, CP52, 61 rue Buffon, 75231 Paris Cedex 05, France
| | - Philippe Grellier
- Team Adaptation of Protozoa to their Environment, UMR 7245 CNRS, National Museum of Natural History, CP52, 61 rue Buffon, 75231 Paris Cedex 05, France
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Florent I, Maréchal E, Gascuel O, Bréhélin L. Bioinformatic strategies to provide functional clues to the unknown genes inPlasmodium falciparumgenome. Parasite 2010; 17:273-83. [DOI: 10.1051/parasite/2010174273] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Azimzadeh O, Sow C, Gèze M, Nyalwidhe J, Florent I. Plasmodium falciparum PfA-M1 aminopeptidase is trafficked via the parasitophorous vacuole and marginally delivered to the food vacuole. Malar J 2010; 9:189. [PMID: 20591164 PMCID: PMC2914058 DOI: 10.1186/1475-2875-9-189] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2009] [Accepted: 06/30/2010] [Indexed: 12/28/2022] Open
Abstract
Background The Plasmodium falciparum PfA-M1 aminopeptidase, encoded by a single copy gene, displays a neutral optimal activity at pH 7.4. It is thought to be involved in haemoglobin degradation and/or invasion of the host cells. Although a series of inhibitors developed against PfA-M1 suggest that this enzyme is a promising target for therapeutic intervention, the biological function(s) of the three different forms of the enzyme (p120, p96 and p68) are not fully understood. Two recent studies using PfA-M1 transfections have also provided conflicting results on PfA-M1 localization within or outside the food vacuole. Alternative destinations, such as the nucleus, have also been proposed. Methods By using a combination of techniques, such as cellular and biochemical fractionations, biochemical analysis, mass-spectrometry, immunofluorescence assays and live imaging of GFP fusions to various PfA-M1 domains, evidence is provided for differential localization and behaviour of the three different forms of PfA-M1 in the infected red blood cell which had not been established before. Results The high molecular weight p120 form of PfA-M1, the only version of the protein with a hydrophobic transmembrane domain, is detected both inside the parasite and in the parasitophorous vacuole while the processed p68 form is strictly soluble and localized within the parasite. The transient intermediate and soluble p96 form is localized at the border of parasitophorous vacuole and within the parasite in a compartment sensitive to high concentrations of saponin. Upon treatment with brefeldin A, the PfA-M1 maturation is blocked and the enzyme remains in a compartment close to the nucleus. Conclusions The PfA-M1 trafficking/maturation scenario that emerges from this data indicates that PfA-M1, synthesized as the precursor p120 form, is targeted to the parasitophorous vacuole via the parasite endoplasmic reticulum/Golgi, where it is converted into the transient p96 form. This p96 form is eventually redirected into the parasite to be converted into the processed p68 form that is only marginally delivered to the parasite food vacuole. These results provide insights on PfA-M1 topology regarding key compartments of the infected red blood cells that have important implications for the development of inhibitors targeting this plasmodial enzyme.
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Affiliation(s)
- Omid Azimzadeh
- FRE3206 CNRS/MNHN, Department Regulations, Development, Molecular Diversity, CP52, 61 rue Buffon, F-75005 Paris, France
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Madelaine C, Buriez O, Crousse B, Florent I, Grellier P, Retailleau P, Six Y. Aminocyclopropanes as precursors of endoperoxides with antimalarial activity. Org Biomol Chem 2010; 8:5591-601. [DOI: 10.1039/c0ob00308e] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Florent I, Porcel BM, Guillaume E, Da Silva C, Artiguenave F, Maréchal E, Bréhélin L, Gascuel O, Charneau S, Wincker P, Grellier P. A Plasmodium falciparum FcB1-schizont-EST collection providing clues to schizont specific gene structure and polymorphism. BMC Genomics 2009; 10:235. [PMID: 19454033 PMCID: PMC2695484 DOI: 10.1186/1471-2164-10-235] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2008] [Accepted: 05/19/2009] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND The Plasmodium falciparum genome (3D7 strain) published in 2002, revealed ~5,400 genes, mostly based on in silico predictions. Experimental data is therefore required for structural and functional assessments of P. falciparum genes and expression, and polymorphic data are further necessary to exploit genomic information to further qualify therapeutic target candidates. Here, we undertook a large scale analysis of a P. falciparum FcB1-schizont-EST library previously constructed by suppression subtractive hybridization (SSH) to study genes expressed during merozoite morphogenesis, with the aim of: 1) obtaining an exhaustive collection of schizont specific ESTs, 2) experimentally validating or correcting P. falciparum gene models and 3) pinpointing genes displaying protein polymorphism between the FcB1 and 3D7 strains. RESULTS A total of 22,125 clones randomly picked from the SSH library were sequenced, yielding 21,805 usable ESTs that were then clustered on the P. falciparum genome. This allowed identification of 243 protein coding genes, including 121 previously annotated as hypothetical. Statistical analysis of GO terms, when available, indicated significant enrichment in genes involved in "entry into host-cells" and "actin cytoskeleton". Although most ESTs do not span full-length gene reading frames, detailed sequence comparison of FcB1-ESTs versus 3D7 genomic sequences allowed the confirmation of exon/intron boundaries in 29 genes, the detection of new boundaries in 14 genes and identification of protein polymorphism for 21 genes. In addition, a large number of non-protein coding ESTs were identified, mainly matching with the two A-type rRNA units (on chromosomes 5 and 7) and to a lower extent, two atypical rRNA loci (on chromosomes 1 and 8), TARE subtelomeric regions (several chromosomes) and the recently described telomerase RNA gene (chromosome 9). CONCLUSION This FcB1-schizont-EST analysis confirmed the actual expression of 243 protein coding genes, allowing the correction of structural annotations for a quarter of these sequences. In addition, this analysis demonstrated the actual transcription of several remarkable non-protein coding loci: 2 atypical rRNA, TARE region and telomerase RNA gene. Together with other collections of P. falciparum ESTs, usually generated from mixed parasite stages, this collection of FcB1-schizont-ESTs provides valuable data to gain further insight into the P. falciparum gene structure, polymorphism and expression.
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Affiliation(s)
- Isabelle Florent
- FRE3206 CNRS/MNHN, USM504, Biologie Fonctionnelle des Protozoaires, RDDM, Muséum National d'Histoire Naturelle, Paris, France.
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Razakantoanina V, Florent I, Jaureguiberry G. Plasmodium falciparum: functional mitochondrial ADP/ATP transporter in Escherichia coli plasmic membrane as a tool for selective drug screening. Exp Parasitol 2007; 118:181-7. [PMID: 17920591 DOI: 10.1016/j.exppara.2007.07.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2007] [Revised: 07/27/2007] [Accepted: 07/31/2007] [Indexed: 11/30/2022]
Abstract
Plasmodium falciparum mitochondrial ADP/ATP transporter or adenylate translocase (PfAdT) was previously characterised at the molecular level and intracellularly located by immuno-electromicroscopy. Inhibition of this transporter blocks parasite development in erythrocytes. In this study, PfAdT was expressed in C43 (DE3) Escherichia coli strain under isopropyl beta-d-thiogalacto-pyranoside (IPTG) induction to screen inhibitory molecules. PfAdT was integrated directly into the bacterial cytoplasmic membrane. Whereas IPTG-induced bacterial cells imported radioactively labelled ATP, non-induced cells did not. The transporter bound specifically ADP and ATP, but not AMP. IPTG-induced cells preloaded with labelled ATP exported ATP after exogenous addition of unlabelled ADP or ATP, indicating a counter exchange transport mechanism. Bongrekic acid and atractyloside, two well-known specific inhibitors of mitochondrial ADP/ATP transporter, were tested. This experimental model was evaluated using three Malagasy crude plants extracts which have shown antiplasmodial activity on in vitro parasite cultures.
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Affiliation(s)
- Valérie Razakantoanina
- Biologie Fonctionnelle des Protozoaires, USM504-EA3335, Département Régulations, Développement, Diversité Moléculaire, Muséum National d'Histoire Naturelle, 61 rue Buffon, 75005 Paris, France
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Charneau S, Bastos IMD, Mouray E, Ribeiro BM, Santana JM, Grellier P, Florent I. Characterization of PfDYN2, a dynamin-like protein of Plasmodium falciparum expressed in schizonts. Microbes Infect 2007; 9:797-805. [PMID: 17533148 DOI: 10.1016/j.micinf.2007.02.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2006] [Revised: 02/14/2007] [Accepted: 02/21/2007] [Indexed: 10/23/2022]
Abstract
Dynamin superfamily members are large GTPases conserved through evolution mainly described as mechanochemical enzymes involved in membrane scission events. The Plasmodium falciparum dynamin-2 (Pfdyn2) gene was cloned from the FcB1 strain. PfDYN2 belongs to the dynamin-like protein subgroup of the dynamin superfamily since it possesses a large GTPase domain together with the conserved dynamin_M and GED domains. Recombinant PfDYN2 was able to bind GTP, to hydrolyze GTP into GDP and to self-associate in low-salt conditions. PfDYN2 expression was restricted to schizonts where it localized in punctuate structures within the parasite cytoplasm. PfDYN2 partly co-localized with markers of the parasite endoplasmic reticulum, Golgi apparatus and apicoplast, suggesting it could be implicated in vesicular trafficking and/or organelle fission events known to occur during the last hours of the parasite development in erythrocytes. PfDYN2 and the previously described PfDYN1 are the only two dynamin superfamily members identified in the P. falciparum genome and the available data suggest that this situation is conserved in the Apicomplexa phylum.
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Affiliation(s)
- Sébastien Charneau
- USM504-EA3335, RDDM, Muséum National d'Histoire Naturelle, 61, rue Buffon, CP52, 75231 Paris cedex 05, France
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Flipo M, Beghyn T, Leroux V, Florent I, Deprez BP, Deprez-Poulain RF. Novel Selective Inhibitors of the Zinc Plasmodial Aminopeptidase PfA-M1 as Potential Antimalarial Agents. J Med Chem 2007; 50:1322-34. [PMID: 17326615 DOI: 10.1021/jm061169b] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Proteases that are expressed during the erythocytic stage of Plasmodium falciparum are newly explored drug targets for the treatment of malaria. We report here the discovery of potent inhibitors of PfA-M1, a metallo-aminopeptidase of the parasite. These compounds are based on a malonic hydroxamic template and present a very good selectivity toward neutral aminopeptidase (APN-CD13), a related protease in mammals. Structure-activity relationships in these series are described. Further optimization of the best inhibitor yielded a nanomolar, selective inhibitor of PfA-M1. This inhibitor displays good physicochemical and pharmacokinetic properties and a promising antimalarial activity.
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Affiliation(s)
- Marion Flipo
- Inserm, U761, Biostructures and Drug Discovery, Lille F-59006 France
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Mouray E, Moutiez M, Girault S, Sergheraert C, Florent I, Grellier P. Biochemical properties and cellular localization of Plasmodium falciparum protein disulfide isomerase. Biochimie 2006; 89:337-46. [PMID: 17166645 DOI: 10.1016/j.biochi.2006.11.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2006] [Accepted: 11/02/2006] [Indexed: 11/21/2022]
Abstract
We have previously reported the isolation of a 52,000 M(r) protein (Pf52) displaying consensus sequences for thiol:disulfide oxidoreductases. Pf52 therefore represents the plasmodial protein disulfide isomerase (PDI). It has been renamed PfPDI and correlates to MAL8P1.17 in the annotated genome of P. falciparum (3D7 strain). Antibodies were raised against recombinant (His)(6)-tagged forms of PfPDI devoid of its signal peptide sequence, demonstrating a major co-localization of PfPDI with endoplasmic reticulum-resident proteins, PfBIP and PfERC, but not with the Golgi marker PfERD2. Recombinant PfPDI displayed typical biochemical functions of PDIs: oxidase/isomerase and reductase activities, as well as a chaperone-like behavior on the denaturated protein rhodanese. These activities were comparable to those measured for the purified native bovine PDI and the human recombinant PDI. The antiplasmodial compound DS61 does inhibit the recombinant PfPDI oxidase/isomerase activity but not that of the human recombinant PDI, suggesting structural differences between both enzymes. However, a discrepancy between the inhibitory activity of DS61 on the recombinant PfPDI (IC(50) of 430 microM) and its in vitro antiplasmodial activity (IC(50) of 0.1 microM) was observed, suggesting that PfPDI is not the only target of DS61. Taking into account its biochemical properties and its intracellular localization, the involvement of PfPDI in the parasite protein folding is discussed, as well as its potential for the development of alternative antimalarial chemotherapy strategies.
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Affiliation(s)
- Elisabeth Mouray
- USM 0504 Biologie Fonctionnelle des Protozoaires, EA3335, Département Régulations, Développement, Diversité Moléculaire, CP 52, Muséum National d'Histoire Naturelle, 75231 Paris cedex 05, France
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Florent I, Lecaille F, Montagne JJ, Gauthier F, Schrével J, Lalmanach G. Labelling of four distinct trophozoite falcipains of Plasmodium falciparum by a cystatin-derived probe. Biol Chem 2005; 386:401-6. [PMID: 15899703 DOI: 10.1515/bc.2005.048] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Trophozoite cysteine protease (TCP) activity, isolated from Plasmodium falciparum soluble 100,000 g extracts, displayed native falcipain-1 kinetic parameters towards peptidyl substrates. The labelling of either isolated TCP or soluble 100,000 g extracts by a cystatin-derived probe (biotinyl-Leu-Val-Gly-CHN2) revealed a single band of ca. 30 kDa by SDS-PAGE, which was resolved into four spots displaying isoelectric points (pI) from 4.7 to 5.3 after two-dimensional separation. The molecular mass and pI correspond to those of falcipain-3, falcipain-2, falcipain-2' and falcipain-1, respectively. The two central spots were identified by matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry as falcipain-2 and falcipain-2'. This activity-based probe represents a potential tool for profiling active falcipains in parasites.
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Affiliation(s)
- Isabelle Florent
- Biologie Fonctionnelle des Protozoaires, Département Régulation, Dévelopement, Diversité Moléculaire, Muséum National d'Histoire Naturelle, 61, rue Buffon, F-75005 Paris, France.
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Affiliation(s)
- Isabelle Florent
- Biologie Fonctionnelle des Protozoaires, USM504/EA3335, Département Regulations Développement Diversité Moléculaire, Muséum National d'Histoire Naturelle, 61 rue Buffon, 75005 Paris, France.
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Flipo M, Florent I, Grellier P, Sergheraert C, Deprez-Poulain R. Design, synthesis and antimalarial activity of novel, quinoline-based, zinc metallo-aminopeptidase inhibitors. Bioorg Med Chem Lett 2003; 13:2659-62. [PMID: 12873488 DOI: 10.1016/s0960-894x(03)00550-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
PfA-M1, a neutral zinc aminopeptidase of Plasmodium falciparum, is a new potential target for the discovery of antimalarials. The design and synthesis of a library of 45 quinoline-based inhibitors of PfA-M1 is reported. The best inhibitor displays an IC(50) of 854 nM. The antimalarial activity on a CQ-resistant strain and the specificity towards mammalian aminopeptidase N are also discussed.
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Affiliation(s)
- Marian Flipo
- UMR CNRS 8525, Institut Pasteur et Institut de Biologie de Lille, Université de Lille 2, Lille, France
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Abstract
A Plasmodium falciparum single copy gene predicting a 122 kDa protein belonging to the Ml family of zincmetallopeptidases was previously reported and related to erythrocytic schizont proteins of 96 (p96) and 68 (p68) kDa. By using protease inhibitors during parasite harvest and enzyme preparations, and polyclonal antibodies specific for 2 peptidic domains deduced from the gene, we identified the 120 kDa precursor and demonstrated its processing into p96 and p68. The N-terminal ends of p96 and p68 were mapped between glycine-123 and lysine-163, both proteins thus containing the catalytic domain. The purified enzyme, here named PfA-M1 (p96/p68), displayed strict aminopeptidase activity, optimal at pH 74, with broad substrate spectrum. Its inhibition and reactivation profiles were typical of zinc-metalloaminopeptidases. By Western blotting, PfA-M1 was detected in trophozoites, in addition to schizonts, but not in early rings. PfA-M1 was localized by indirect immunofluorescence confocal microscopy. In trophozoites, the labelling was diffuse in the parasite cytoplasm, with accumulations around the food vacuole. In schizonts, it turned progressively to a vesicle-like pattern, ending as a clear spot in released merozoites. The involvement of PfA-M1 in haemoglobin breakdown and erythrocyte reinvasion is discussed in light of the dual functions recently reported for several P. falciparum proteases.
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Affiliation(s)
- M Allary
- Laboratoire de Biologie Parasitaire, Protistologie, Helminthologie, Muséum National d'Histoire Naturelle, EA 3335 et FR 63 CNRS, Paris, France
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