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Mkaouar H, Mariaule V, Rhimi S, Hernandez J, Kriaa A, Jablaoui A, Akermi N, Maguin E, Lesner A, Korkmaz B, Rhimi M. Gut Serpinome: Emerging Evidence in IBD. Int J Mol Sci 2021; 22:ijms22116088. [PMID: 34200095 PMCID: PMC8201313 DOI: 10.3390/ijms22116088] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/01/2021] [Accepted: 06/03/2021] [Indexed: 12/11/2022] Open
Abstract
Inflammatory bowel diseases (IBD) are incurable disorders whose prevalence and global socioeconomic impact are increasing. While the role of host genetics and immunity is well documented, that of gut microbiota dysbiosis is increasingly being studied. However, the molecular basis of the dialogue between the gut microbiota and the host remains poorly understood. Increased activity of serine proteases is demonstrated in IBD patients and may contribute to the onset and the maintenance of the disease. The intestinal proteolytic balance is the result of an equilibrium between the proteases and their corresponding inhibitors. Interestingly, the serine protease inhibitors (serpins) encoded by the host are well reported; in contrast, those from the gut microbiota remain poorly studied. In this review, we provide a concise analysis of the roles of serine protease in IBD physiopathology and we focus on the serpins from the gut microbiota (gut serpinome) and their relevance as a promising therapeutic approach.
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Affiliation(s)
- Héla Mkaouar
- Microbiota Interaction with Human and Animal Team (MIHA), Micalis Institute, AgroParisTech, Université Paris-Saclay, INRAE, 78350 Jouy-en-Josas, France; (H.M.); (V.M.); (S.R.); (A.K.); (A.J.); (N.A.); (E.M.)
| | - Vincent Mariaule
- Microbiota Interaction with Human and Animal Team (MIHA), Micalis Institute, AgroParisTech, Université Paris-Saclay, INRAE, 78350 Jouy-en-Josas, France; (H.M.); (V.M.); (S.R.); (A.K.); (A.J.); (N.A.); (E.M.)
| | - Soufien Rhimi
- Microbiota Interaction with Human and Animal Team (MIHA), Micalis Institute, AgroParisTech, Université Paris-Saclay, INRAE, 78350 Jouy-en-Josas, France; (H.M.); (V.M.); (S.R.); (A.K.); (A.J.); (N.A.); (E.M.)
| | - Juan Hernandez
- Department of Clinical Sciences, Nantes-Atlantic College of Veterinary Medicine and Food Sciences (Oniris), University of Nantes, 101 Route de Gachet, 44300 Nantes, France;
| | - Aicha Kriaa
- Microbiota Interaction with Human and Animal Team (MIHA), Micalis Institute, AgroParisTech, Université Paris-Saclay, INRAE, 78350 Jouy-en-Josas, France; (H.M.); (V.M.); (S.R.); (A.K.); (A.J.); (N.A.); (E.M.)
| | - Amin Jablaoui
- Microbiota Interaction with Human and Animal Team (MIHA), Micalis Institute, AgroParisTech, Université Paris-Saclay, INRAE, 78350 Jouy-en-Josas, France; (H.M.); (V.M.); (S.R.); (A.K.); (A.J.); (N.A.); (E.M.)
| | - Nizar Akermi
- Microbiota Interaction with Human and Animal Team (MIHA), Micalis Institute, AgroParisTech, Université Paris-Saclay, INRAE, 78350 Jouy-en-Josas, France; (H.M.); (V.M.); (S.R.); (A.K.); (A.J.); (N.A.); (E.M.)
| | - Emmanuelle Maguin
- Microbiota Interaction with Human and Animal Team (MIHA), Micalis Institute, AgroParisTech, Université Paris-Saclay, INRAE, 78350 Jouy-en-Josas, France; (H.M.); (V.M.); (S.R.); (A.K.); (A.J.); (N.A.); (E.M.)
| | - Adam Lesner
- Faculty of Chemistry, University of Gdansk, Uniwersytet Gdanski, Chemistry, Wita Stwosza 63, PL80-308 Gdansk, Poland;
| | - Brice Korkmaz
- INSERM UMR-1100, “Research Center for Respiratory Diseases” and University of Tours, 37032 Tours, France;
| | - Moez Rhimi
- Microbiota Interaction with Human and Animal Team (MIHA), Micalis Institute, AgroParisTech, Université Paris-Saclay, INRAE, 78350 Jouy-en-Josas, France; (H.M.); (V.M.); (S.R.); (A.K.); (A.J.); (N.A.); (E.M.)
- Correspondence:
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Kriaa A, Jablaoui A, Mkaouar H, Akermi N, Maguin E, Rhimi M. Serine proteases at the cutting edge of IBD: Focus on gastrointestinal inflammation. FASEB J 2020; 34:7270-7282. [PMID: 32307770 DOI: 10.1096/fj.202000031rr] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 01/08/2020] [Revised: 03/27/2020] [Accepted: 03/28/2020] [Indexed: 12/15/2022]
Abstract
Serine proteases have been long recognized to coordinate many physiological processes and play key roles in regulating the inflammatory response. Accordingly, their dysregulation has been regularly associated with several inflammatory disorders and suggested as a central mechanism in the pathophysiology of digestive inflammation. So far, studies addressing the proteolytic homeostasis in the gut have mainly focused on host serine proteases as candidates of interest, while largely ignoring the potential contribution of their bacterial counterparts. The human gut microbiota comprises a complex ecosystem that contributes to host health and disease. Yet, our understanding of microbially produced serine proteases and investigation of whether they are causally linked to IBD is still in its infancy. In this review, we highlight recent advances in the emerging roles of host and bacterial serine proteases in digestive inflammation. We also discuss the application of available tools in the gut to monitor disease-related serine proteases. An exhaustive representation and understanding of such functional potential would help in closing existing gaps in mechanistic knowledge.
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Affiliation(s)
- Aicha Kriaa
- Microbiota Interaction with Human and Animal Team (MIHA), Micalis Institute, AgroParisTech, Université Paris-Saclay, INRAE, Jouy-en-Josas, France
| | - Amin Jablaoui
- Microbiota Interaction with Human and Animal Team (MIHA), Micalis Institute, AgroParisTech, Université Paris-Saclay, INRAE, Jouy-en-Josas, France
| | - Héla Mkaouar
- Microbiota Interaction with Human and Animal Team (MIHA), Micalis Institute, AgroParisTech, Université Paris-Saclay, INRAE, Jouy-en-Josas, France
| | - Nizar Akermi
- Microbiota Interaction with Human and Animal Team (MIHA), Micalis Institute, AgroParisTech, Université Paris-Saclay, INRAE, Jouy-en-Josas, France
| | - Emmanuelle Maguin
- Microbiota Interaction with Human and Animal Team (MIHA), Micalis Institute, AgroParisTech, Université Paris-Saclay, INRAE, Jouy-en-Josas, France
| | - Moez Rhimi
- Microbiota Interaction with Human and Animal Team (MIHA), Micalis Institute, AgroParisTech, Université Paris-Saclay, INRAE, Jouy-en-Josas, France
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Jablaoui A, Kriaa A, Mkaouar H, Akermi N, Soussou S, Wysocka M, Wołoszyn D, Amouri A, Gargouri A, Maguin E, Lesner A, Rhimi M. Fecal Serine Protease Profiling in Inflammatory Bowel Diseases. Front Cell Infect Microbiol 2020; 10:21. [PMID: 32117798 PMCID: PMC7011180 DOI: 10.3389/fcimb.2020.00021] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [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: 10/16/2019] [Accepted: 01/14/2020] [Indexed: 12/12/2022] Open
Abstract
Serine proteases are extensively known to play key roles in many physiological processes. However, their dysregulation is often associated to several diseases including inflammatory bowel diseases (IBD). Here, we used specific substrates to monitor fecal protease activities in a large cohort of healthy and IBD patients. Of interest, serine protease activity was 10-fold higher in IBD fecal samples compared to healthy controls. Moreover, functional analysis of these fecal proteolytic activities revealed that the most increased activities are trypsin-like, elastase-like and cathepsin G-like. We also show for the first time, an increase of proteinase 3-like activity in these samples compared to controls. Results presented here will guide further investigations to better understand the relevance of these peptidases in IBD.
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Affiliation(s)
- Amin Jablaoui
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Microbiota Interaction with Human and Animal Team (MIHA), Jouy-en-Josas, France
| | - Aicha Kriaa
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Microbiota Interaction with Human and Animal Team (MIHA), Jouy-en-Josas, France
| | - Héla Mkaouar
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Microbiota Interaction with Human and Animal Team (MIHA), Jouy-en-Josas, France
| | - Nizar Akermi
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Microbiota Interaction with Human and Animal Team (MIHA), Jouy-en-Josas, France
| | - Souha Soussou
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Microbiota Interaction with Human and Animal Team (MIHA), Jouy-en-Josas, France
| | | | | | - Ali Amouri
- Department of Gastroenterology, Hedi Chaker University Hospital, Sfax, Tunisia
| | - Ali Gargouri
- Laboratory of Molecular Biology of Eukaryotes, Center of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Emmanuelle Maguin
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Microbiota Interaction with Human and Animal Team (MIHA), Jouy-en-Josas, France
| | - Adam Lesner
- Faculty of Chemistry, University of Gdansk, Gdansk, Poland
| | - Moez Rhimi
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Microbiota Interaction with Human and Animal Team (MIHA), Jouy-en-Josas, France
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Mkaouar H, Akermi N, Kriaa A, Abraham AL, Jablaoui A, Soussou S, Mokdad-Gargouri R, Maguin E, Rhimi M. Serine protease inhibitors and human wellbeing interplay: new insights for old friends. PeerJ 2019; 7:e7224. [PMID: 31531264 PMCID: PMC6718151 DOI: 10.7717/peerj.7224] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 04/17/2019] [Accepted: 05/31/2019] [Indexed: 12/14/2022] Open
Abstract
Serine Protease Inhibitors (Serpins) control tightly regulated physiological processes and their dysfunction is associated to various diseases. Thus, increasing interest is given to these proteins as new therapeutic targets. Several studies provided functional and structural data about human serpins. By comparison, only little knowledge regarding bacterial serpins exists. Through the emergence of metagenomic studies, many bacterial serpins were identified from numerous ecological niches including the human gut microbiota. The origin, distribution and function of these proteins remain to be established. In this report, we shed light on the key role of human and bacterial serpins in health and disease. Moreover, we analyze their function, phylogeny and ecological distribution. This review highlights the potential use of bacterial serpins to set out new therapeutic approaches.
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Affiliation(s)
- Héla Mkaouar
- INRA, UMR1319 MICALIS, Jouy-en-Josas, France, AgroParisTech, UMR MICALIS, Jouy-en-Josas, France
| | - Nizar Akermi
- INRA, UMR1319 MICALIS, Jouy-en-Josas, France, AgroParisTech, UMR MICALIS, Jouy-en-Josas, France
| | - Aicha Kriaa
- INRA, UMR1319 MICALIS, Jouy-en-Josas, France, AgroParisTech, UMR MICALIS, Jouy-en-Josas, France
| | | | - Amin Jablaoui
- INRA, UMR1319 MICALIS, Jouy-en-Josas, France, AgroParisTech, UMR MICALIS, Jouy-en-Josas, France
| | - Souha Soussou
- INRA, UMR1319 MICALIS, Jouy-en-Josas, France, AgroParisTech, UMR MICALIS, Jouy-en-Josas, France
| | - Raja Mokdad-Gargouri
- Laboratory of Molecular Biology of Eukaryotes, Center of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Emmanuelle Maguin
- INRA, UMR1319 MICALIS, Jouy-en-Josas, France, AgroParisTech, UMR MICALIS, Jouy-en-Josas, France
| | - Moez Rhimi
- INRA, UMR1319 MICALIS, Jouy-en-Josas, France, AgroParisTech, UMR MICALIS, Jouy-en-Josas, France
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Akermi N, Mkaouar H, Kriaa A, Jablaoui A, Soussou S, Gargouri A, Coleman AW, Perret F, Maguin E, Rhimi M. para-Sulphonato-calix[n]arene capped silver nanoparticles challenge the catalytic efficiency and the stability of a novel human gut serine protease inhibitor. Chem Commun (Camb) 2019; 55:8935-8938. [PMID: 31286126 DOI: 10.1039/c9cc03183a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The Eubacterium saburreum serine protease inhibitor from the human gut microbiota inhibits the eukaryotic pancreatic elastase associated with acute pancreatitis. Interestingly, the inhibition efficiency and stability are markedly increased by the para-sulphonato-calix[8]arene capped silver nanoparticles. Moreover, this enzyme is distinguishable by its high inhibitory effect at broad pH range between 2-10 and temperatures from 10 to 40 °C, in the presence of para-sulphonato-calix[8]arene capped silver nanoparticles the enzyme remains active even at 70 °C.
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Affiliation(s)
- Nizar Akermi
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, F-78350 Jouy-en-Josas, France.
| | - Hela Mkaouar
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, F-78350 Jouy-en-Josas, France.
| | - Aicha Kriaa
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, F-78350 Jouy-en-Josas, France.
| | - Amin Jablaoui
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, F-78350 Jouy-en-Josas, France.
| | - Souha Soussou
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, F-78350 Jouy-en-Josas, France.
| | - Ali Gargouri
- Laboratory of Molecular Biology of Eukaryotes, Center of Biotechnology of Sfax, University of Sfax, 3038, Sfax, Tunisia
| | | | - Florent Perret
- Univ Lyon, Université Lyon 1, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS, F-69622, Villeurbanne, France
| | - Emmanuelle Maguin
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, F-78350 Jouy-en-Josas, France.
| | - Moez Rhimi
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, F-78350 Jouy-en-Josas, France.
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Jablaoui A, Kriaa A, Akermi N, Mkaouar H, Gargouri A, Maguin E, Rhimi M. Biotechnological Applications of Serine Proteases: A Patent Review. Recent Pat Biotechnol 2018; 12:280-287. [PMID: 30246645 DOI: 10.2174/1872208312666180924112007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 08/10/2018] [Revised: 09/10/2018] [Accepted: 09/11/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Serine proteases have long been recognized to play key roles in various physiological processes. However, their disequilibrium can be linked to several diseases. Taking into account their wide diversity and specificity, they have been actively investigated by many industrial, academic and pharmaceutical industries. OBJECTIVE This review aims to provide a concise analysis of the described serine proteases as well as their relevant biotechnological and therapeutic applications. METHOD Here, we give an overview of the recent knowledge on serine proteases with a particular focus on their biotechnological applications reported in European Patent Office (Espacenet), United States Patent and National Patent Collections (WIPO) patent databases. RESULTS Serine proteases are probably the enzymes that have been mostly studied over the past few decades. However, despite their increasing interest, no significant patent so far has dealt with the identity of overactive serine proteases in disease settings. CONCLUSION This review displays that serine proteases have several relevant industrial uses. New potential applications of such proteins require more functional analyses seeing the key role of serine proteases in many biomedical and biotechnological processes.
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Affiliation(s)
- Amin Jablaoui
- UMR 1319 Micalis, INRA, AgroParisTech, Universite Paris-Saclay, Microbiota Interaction with Human and Animal Team, 78350, Jouy-en-Josas, France
- Laboratory of Molecular Biology of Eukaryotes, Center of Biotechnology of Sfax, University of Sfax, 3038, Sfax, Tunisia
| | - Aicha Kriaa
- UMR 1319 Micalis, INRA, AgroParisTech, Universite Paris-Saclay, Microbiota Interaction with Human and Animal Team, 78350, Jouy-en-Josas, France
- Laboratory of Molecular Biology of Eukaryotes, Center of Biotechnology of Sfax, University of Sfax, 3038, Sfax, Tunisia
| | - Nizar Akermi
- UMR 1319 Micalis, INRA, AgroParisTech, Universite Paris-Saclay, Microbiota Interaction with Human and Animal Team, 78350, Jouy-en-Josas, France
- Laboratory of Molecular Biology of Eukaryotes, Center of Biotechnology of Sfax, University of Sfax, 3038, Sfax, Tunisia
| | - Héla Mkaouar
- UMR 1319 Micalis, INRA, AgroParisTech, Universite Paris-Saclay, Microbiota Interaction with Human and Animal Team, 78350, Jouy-en-Josas, France
- Laboratory of Molecular Biology of Eukaryotes, Center of Biotechnology of Sfax, University of Sfax, 3038, Sfax, Tunisia
| | - Ali Gargouri
- Laboratory of Molecular Biology of Eukaryotes, Center of Biotechnology of Sfax, University of Sfax, 3038, Sfax, Tunisia
| | - Emmanuelle Maguin
- UMR 1319 Micalis, INRA, AgroParisTech, Universite Paris-Saclay, Microbiota Interaction with Human and Animal Team, 78350, Jouy-en-Josas, France
| | - Moez Rhimi
- UMR 1319 Micalis, INRA, AgroParisTech, Universite Paris-Saclay, Microbiota Interaction with Human and Animal Team, 78350, Jouy-en-Josas, France
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Akermi N, Mkaouar H, Jeblaoui A, Kriaa A, Gargouri A, Maguin E, Rhimi M. Relevant Patented Biotechnological Applications of Ecotin: An Update. Recent Pat Biotechnol 2017; 12:233-238. [PMID: 29173191 DOI: 10.2174/1872208311666171122153908] [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: 09/04/2017] [Revised: 11/15/2017] [Accepted: 11/16/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND Ecotins are serine protease inhibitors which are generally found in the periplasmic compartment. These inhibitors act on a wide range of serine proteases with different efficiencies. Actually, only few Ecotins were studied, and the main characterized proteins were derived from Escherichia coli. Functional studies of this latter protein allowed the development of numerous patents related to Ecotin relevant biotechnological applications. OBJECTIVE This review aims to give an update on the relevant Ecotins already described and to provide a concise overview concerning the relevant patented applications of these serine protease inhibitors. METHOD In this review, we focus on the analysis of Ecotin diversity and their distribution using Pfam protein data base. Moreover, we report a detailed overview regarding the biotechnological applications of the Ecotins based on all patents associated to Ecotins and their biotechnological applications searched in European Patent Office (Espacenet), United States Patent and National Patent Collections (WIPO) patents databases. RESULTS On the basis of this analysis, we demonstrate that Ecotins are mostly present in bacteria. Study of Ecotin sequences and their biochemical properties reveals that they are a small serine protease inhibitor group. The high stability and specificity of Ecotins promote their biotechnological uses in several fields. The original structural organization of Ecotin-protease complexes and their flexibility lead to several patented applications. CONCLUSION This review showed that Ecotins have many attractive biotechnological applications. Potential of Ecotins needs to be more investigated seeing the limited available data related to this protein family. Thus, further functional analyses will promote the use of Ecotins.
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Affiliation(s)
- Nizar Akermi
- UMR 1319 Micalis, INRA, AgroParisTech, Universite Paris-Saclay, Microbiota Interaction with Human and Animal Team, 78350, Jouy-en-Josas, France.,Laboratory of Molecular Biology of Eukaryotes, Center of Biotechnology of Sfax, University of Sfax, 3038, Sfax, Tunisia
| | - Héla Mkaouar
- UMR 1319 Micalis, INRA, AgroParisTech, Universite Paris-Saclay, Microbiota Interaction with Human and Animal Team, 78350, Jouy-en-Josas, France.,Laboratory of Molecular Biology of Eukaryotes, Center of Biotechnology of Sfax, University of Sfax, 3038, Sfax, Tunisia
| | - Amin Jeblaoui
- UMR 1319 Micalis, INRA, AgroParisTech, Universite Paris-Saclay, Microbiota Interaction with Human and Animal Team, 78350, Jouy-en-Josas, France.,Laboratory of Molecular Biology of Eukaryotes, Center of Biotechnology of Sfax, University of Sfax, 3038, Sfax, Tunisia
| | - Aicha Kriaa
- UMR 1319 Micalis, INRA, AgroParisTech, Universite Paris-Saclay, Microbiota Interaction with Human and Animal Team, 78350, Jouy-en-Josas, France.,Laboratory of Molecular Biology of Eukaryotes, Center of Biotechnology of Sfax, University of Sfax, 3038, Sfax, Tunisia
| | - Ali Gargouri
- UMR 1319 Micalis, INRA, AgroParisTech, Universite Paris-Saclay, Microbiota Interaction with Human and Animal Team, 78350, Jouy-en-Josas, France
| | - Emmanuelle Maguin
- UMR 1319 Micalis, INRA, AgroParisTech, Universite Paris-Saclay, Microbiota Interaction with Human and Animal Team, 78350, Jouy-en-Josas, France
| | - Moez Rhimi
- UMR 1319 Micalis, INRA, AgroParisTech, Universite Paris-Saclay, Microbiota Interaction with Human and Animal Team, 78350, Jouy-en-Josas, France
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Mkaouar H, Akermi N, Mariaule V, Boudebbouze S, Gaci N, Szukala F, Pons N, Marquez J, Gargouri A, Maguin E, Rhimi M. Siropins, novel serine protease inhibitors from gut microbiota acting on human proteases involved in inflammatory bowel diseases. Microb Cell Fact 2016; 15:201. [PMID: 27894344 PMCID: PMC5127057 DOI: 10.1186/s12934-016-0596-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [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: 07/24/2016] [Accepted: 11/08/2016] [Indexed: 02/05/2023] Open
Abstract
Background In eukaryotes, the serpins constitute a wide family of protease inhibitors regulating many physiological pathways. Many reports stressed the key role of serpins in several human physiopathologies including mainly the inflammatory bowel diseases. In this context, eukaryotic serpins were largely studied and their use to limit inflammation was reported. In comparison to that, bacterial serpins and mainly those from human gut microbiota remain poorly studied. Results The two genes encoding for putative serpins from the human gut bacterium Eubacterium sireaum, display low sequence identities. These genes were overexpressed and the encoded proteins, named Siropins, were purified. Activity studies demonstrated that both purified proteins inhibited serine proteases but surprisingly they preferentially inhibited two human serine proteases (Human Neutrophil Elastase and Proteinase3). The biochemical characterization of these Siropins revealed that Siropin 1 was the most active and stable at low pH values while Siropin 2 was more thermoactive and thermostable. Kinetic analysis allowed the determination of the stoichiometry of inhibition (SI) which was around 1 and of the association rate constants of 7.7 × 104 for the Human Neutrophil Elastase and 2.6 × 105 for the Proteinase3. Moreover, both Siropins displayed the ability to inhibit proteases usually present in fecal waters. Altogether our data indicate the high efficiency of Siropins and their probable involvement in the control of the overall intestine protease activity. Conclusions Here we report the purification and the biochemical characterization of two novel serpins originated from Eubacterium sireaum, a human gastro-intestinal tract commensal bacteria. These proteins that we called Siropins, efficiently inhibited two human proteases reported to be associated with inflammatory bowel diseases. The determination of the biochemical properties of these enzymes revealed different temperature and pH behaviours that may reflect adaptation of this human commensal bacterium to different ecological environments. To the best of our knowledge, it is the first bacterial serpins showing an attractive inhibition of fecal proteases recovered from a mice group with chemically induced inflammation. Altogether our data highlight the interesting potential of Siropins, and serpins from the human gut microbiota in general, to be used as new alternative to face inflammatory diseases. Electronic supplementary material The online version of this article (doi:10.1186/s12934-016-0596-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Héla Mkaouar
- UMR 1319 Micalis, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France.,Laboratory of Molecular Biology of Eukaryotes, Center of Biotechnology of Sfax, University of Sfax, 3038, Sfax, Tunisia
| | - Nizar Akermi
- UMR 1319 Micalis, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France.,Laboratory of Molecular Biology of Eukaryotes, Center of Biotechnology of Sfax, University of Sfax, 3038, Sfax, Tunisia
| | - Vincent Mariaule
- European Molecular Biology Laboratory, Grenoble Outstation, 71 Avenue des Martyrs, CS 90181, 38042 Cedex 9, Grenoble, France
| | - Samira Boudebbouze
- UMR 1319 Micalis, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France
| | - Nadia Gaci
- UMR 1319 Micalis, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France
| | - Florette Szukala
- UMR 1319 Micalis, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France
| | - Nicolas Pons
- INRA, Institut National de la Recherche Agronomique, US 1367 Metagenopolis, Jouy-en-Josas, France
| | - Josan Marquez
- European Molecular Biology Laboratory, Grenoble Outstation, 71 Avenue des Martyrs, CS 90181, 38042 Cedex 9, Grenoble, France
| | - Ali Gargouri
- Laboratory of Molecular Biology of Eukaryotes, Center of Biotechnology of Sfax, University of Sfax, 3038, Sfax, Tunisia
| | - Emmanuelle Maguin
- UMR 1319 Micalis, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France
| | - Moez Rhimi
- UMR 1319 Micalis, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France.
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