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Dubois V, Chatagnon J, Depessemier M, Locht C. Maternal acellular pertussis vaccination in mice impairs cellular immunity to Bordetella pertussis infection in offspring. JCI Insight 2023; 8:e167210. [PMID: 37581930 PMCID: PMC10561720 DOI: 10.1172/jci.insight.167210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 08/08/2023] [Indexed: 08/17/2023] Open
Abstract
Given the resurgence of pertussis, several countries have introduced maternal tetanus, diphtheria, and acellular pertussis (aP) vaccination during pregnancy to protect young infants against severe pertussis. Although protective against the disease, the effect of maternal aP vaccination on bacterial colonization of the offspring is unknown. Here, we used a mouse model to demonstrate that maternal aP immunization, either before or during pregnancy, protects pups from lung colonization by Bordetella pertussis. However, maternal aP vaccination resulted in significantly prolonged nasal carriage of B. pertussis by inhibiting the natural recruitment of IL-17-producing resident memory T cells and ensuing neutrophil influx in the nasal tissue, especially of those with proinflammatory and cytotoxic properties. Prolonged nasal carriage after aP vaccination is due to IL-4 signaling, as prolonged nasal carriage is abolished in IL-4Rα-/- mice. The effect of maternal aP vaccination can be transferred transplacentally to the offspring or via breastfeeding and is long-lasting, as it persists into adulthood. Maternal aP vaccination may, thus, augment the B. pertussis reservoir.
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2
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Sarkar S, Mayer Bridwell AE, Good JAD, Wang ER, McKee SR, Valenta J, Harrison GA, Flentie KN, Henry FL, Wixe T, Demirel P, Vagolu SK, Chatagnon J, Machelart A, Brodin P, Tønjum T, Stallings CL, Almqvist F. Design, Synthesis, and Evaluation of Novel Δ 2-Thiazolino 2-Pyridone Derivatives That Potentiate Isoniazid Activity in an Isoniazid-Resistant Mycobacterium tuberculosis Mutant. J Med Chem 2023; 66:11056-11077. [PMID: 37485869 PMCID: PMC10461229 DOI: 10.1021/acs.jmedchem.3c00358] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Indexed: 07/25/2023]
Abstract
Mycobacterium tuberculosis (Mtb) drug resistance poses an alarming threat to global tuberculosis control. We previously reported that C10, a ring-fused thiazolo-2-pyridone, inhibits Mtb respiration, blocks biofilm formation, and restores the activity of the antibiotic isoniazid (INH) in INH-resistant Mtb isolates. This discovery revealed a new strategy to address INH resistance. Expanding upon this strategy, we identified C10 analogues with improved potency and drug-like properties. By exploring three heterocycle spacers (oxadiazole, 1,2,3-triazole, and isoxazole) on the ring-fused thiazolo-2-pyridone scaffold, we identified two novel isoxazoles, 17h and 17j. 17h and 17j inhibited Mtb respiration and biofilm formation more potently with a broader therapeutic window, were better potentiators of INH-mediated inhibition of an INH-resistant Mtb mutant, and more effectively inhibited intracellular Mtb replication than C10. The (-)17j enantiomer showed further enhanced activity compared to its enantiomer and the 17j racemic mixture. Our potent second-generation C10 analogues offer promise for therapeutic development against drug-resistant Mtb.
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Affiliation(s)
- Souvik Sarkar
- Department
of Chemistry, Umeå University, SE-90187 Umeå, Sweden
| | - Anne E. Mayer Bridwell
- Department
of Molecular Microbiology, Center for Women’s Infectious Disease
Research, Washington University School of
Medicine, St. Louis, 63110 Missouri, United States
| | | | - Erin R. Wang
- Department
of Molecular Microbiology, Center for Women’s Infectious Disease
Research, Washington University School of
Medicine, St. Louis, 63110 Missouri, United States
| | - Samuel R. McKee
- Department
of Molecular Microbiology, Center for Women’s Infectious Disease
Research, Washington University School of
Medicine, St. Louis, 63110 Missouri, United States
| | - Joy Valenta
- Department
of Molecular Microbiology, Center for Women’s Infectious Disease
Research, Washington University School of
Medicine, St. Louis, 63110 Missouri, United States
| | - Gregory A. Harrison
- Department
of Molecular Microbiology, Center for Women’s Infectious Disease
Research, Washington University School of
Medicine, St. Louis, 63110 Missouri, United States
| | - Kelly N. Flentie
- Department
of Molecular Microbiology, Center for Women’s Infectious Disease
Research, Washington University School of
Medicine, St. Louis, 63110 Missouri, United States
| | - Frederick L. Henry
- Department
of Molecular Microbiology, Center for Women’s Infectious Disease
Research, Washington University School of
Medicine, St. Louis, 63110 Missouri, United States
| | - Torbjörn Wixe
- Department
of Chemistry, Umeå University, SE-90187 Umeå, Sweden
| | - Peter Demirel
- Department
of Chemistry, Umeå University, SE-90187 Umeå, Sweden
| | - Siva K. Vagolu
- Department
of Microbiology, University of Oslo, N-0316 Oslo, Norway
| | - Jonathan Chatagnon
- University
Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019-UMR
9017-CIIL-Center for Infection and Immunity of Lille, 59000 Lille, France
| | - Arnaud Machelart
- University
Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019-UMR
9017-CIIL-Center for Infection and Immunity of Lille, 59000 Lille, France
| | - Priscille Brodin
- University
Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019-UMR
9017-CIIL-Center for Infection and Immunity of Lille, 59000 Lille, France
| | - Tone Tønjum
- Department
of Microbiology, University of Oslo, N-0316 Oslo, Norway
- Oslo
University Hospital, N-0424 Oslo, Norway
| | - Christina L. Stallings
- Department
of Molecular Microbiology, Center for Women’s Infectious Disease
Research, Washington University School of
Medicine, St. Louis, 63110 Missouri, United States
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Belhaouane I, Pochet A, Chatagnon J, Hoffmann E, Queval CJ, Deboosère N, Boidin-Wichlacz C, Majlessi L, Sencio V, Heumel S, Vandeputte A, Werkmeister E, Fievez L, Bureau F, Rouillé Y, Trottein F, Chamaillard M, Brodin P, Machelart A. Tirap controls Mycobacterium tuberculosis phagosomal acidification. PLoS Pathog 2023; 19:e1011192. [PMID: 36888688 PMCID: PMC9994722 DOI: 10.1371/journal.ppat.1011192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 01/30/2023] [Indexed: 03/09/2023] Open
Abstract
Progression of tuberculosis is tightly linked to a disordered immune balance, resulting in inability of the host to restrict intracellular bacterial replication and its subsequent dissemination. The immune response is mainly characterized by an orchestrated recruitment of inflammatory cells secreting cytokines. This response results from the activation of innate immunity receptors that trigger downstream intracellular signaling pathways involving adaptor proteins such as the TIR-containing adaptor protein (Tirap). In humans, resistance to tuberculosis is associated with a loss-of-function in Tirap. Here, we explore how genetic deficiency in Tirap impacts resistance to Mycobacterium tuberculosis (Mtb) infection in a mouse model and ex vivo. Interestingly, compared to wild type littermates, Tirap heterozygous mice were more resistant to Mtb infection. Upon investigation at the cellular level, we observed that mycobacteria were not able to replicate in Tirap-deficient macrophages compared to wild type counterparts. We next showed that Mtb infection induced Tirap expression which prevented phagosomal acidification and rupture. We further demonstrate that the Tirap-mediated anti-tuberculosis effect occurs through a Cish-dependent signaling pathway. Our findings provide new molecular evidence about how Mtb manipulates innate immune signaling to enable intracellular replication and survival of the pathogen, thus paving the way for host-directed approaches to treat tuberculosis.
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Affiliation(s)
- Imène Belhaouane
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019—UMR 9017—CIIL—Center for Infection and Immunity of Lille, Lille, France
| | - Amine Pochet
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019—UMR 9017—CIIL—Center for Infection and Immunity of Lille, Lille, France
| | - Jonathan Chatagnon
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019—UMR 9017—CIIL—Center for Infection and Immunity of Lille, Lille, France
| | - Eik Hoffmann
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019—UMR 9017—CIIL—Center for Infection and Immunity of Lille, Lille, France
| | - Christophe J. Queval
- High Throughput Screening Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Nathalie Deboosère
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019—UMR 9017—CIIL—Center for Infection and Immunity of Lille, Lille, France
| | - Céline Boidin-Wichlacz
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019—UMR 9017—CIIL—Center for Infection and Immunity of Lille, Lille, France
| | - Laleh Majlessi
- Pasteur-TheraVectys Joint Lab, Institut Pasteur, Université Paris Cité, Paris, France
| | - Valentin Sencio
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019—UMR 9017—CIIL—Center for Infection and Immunity of Lille, Lille, France
| | - Séverine Heumel
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019—UMR 9017—CIIL—Center for Infection and Immunity of Lille, Lille, France
| | - Alexandre Vandeputte
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019—UMR 9017—CIIL—Center for Infection and Immunity of Lille, Lille, France
| | - Elisabeth Werkmeister
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019—UMR 9017—CIIL—Center for Infection and Immunity of Lille, Lille, France
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, US 41—UMS 2014—PLBS, Lille, France
| | - Laurence Fievez
- Laboratory of Cellular and Molecular Immunology, GIGA-Research, Liège, Belgium
| | - Fabrice Bureau
- Laboratory of Cellular and Molecular Immunology, GIGA-Research, Liège, Belgium
| | - Yves Rouillé
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019—UMR 9017—CIIL—Center for Infection and Immunity of Lille, Lille, France
| | - François Trottein
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019—UMR 9017—CIIL—Center for Infection and Immunity of Lille, Lille, France
| | - Mathias Chamaillard
- Laboratory of Cell Physiology, INSERM U1003, University of Lille, Lille, France
| | - Priscille Brodin
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019—UMR 9017—CIIL—Center for Infection and Immunity of Lille, Lille, France
- * E-mail: (PB); (AM)
| | - Arnaud Machelart
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019—UMR 9017—CIIL—Center for Infection and Immunity of Lille, Lille, France
- * E-mail: (PB); (AM)
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4
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Rieu Q, Bougoüin A, Zagar Y, Chatagnon J, Hamieh A, Enderlin J, Huby T, Nandrot EF. Pleiotropic Roles of Scavenger Receptors in Circadian Retinal Phagocytosis: A New Function for Lysosomal SR-B2/LIMP-2 at the RPE Cell Surface. Int J Mol Sci 2022; 23:ijms23073445. [PMID: 35408805 PMCID: PMC8998831 DOI: 10.3390/ijms23073445] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/08/2022] [Accepted: 03/17/2022] [Indexed: 11/29/2022] Open
Abstract
The retinal phagocytic machinery resembles the one used by macrophages to clear apoptotic cells. However, in the retina, the permanent contact between photoreceptor outer segments (POS) and retinal pigment epithelial (RPE) cells requires a tight control of this circadian machinery. In addition to the known receptors synchronizing POS internalization, several others are expressed by RPE cells. Notably, scavenger receptor CD36 has been shown to intervene in the internalization speed. We thus investigated members of the scavenger receptor family class A SR-AI and MARCO and class B CD36, SR-BI and SR-B2/LIMP-2 using immunoblotting, immunohisto- and immunocytochemistry, lipid raft flotation gradients, phagocytosis assays after siRNA/antibody inhibition, RT-qPCR and western blot analysis along the light:dark cycle. All receptors were expressed by RPE cell lines and tissues and colocalized with POS, except SR-BI. All receptors were associated with lipid rafts, and even more upon POS challenge. SR-B2/LIMP-2 inhibition suggested a role in the control of the internalization speed similar to CD36. In vivo, MARCO and CD36 displayed rhythmic gene and protein expression patterns concomitant with the phagocytic peak. Taken together, our results indicate that CD36 and SR-B2/LIMP-2 play a direct regulatory role in POS phagocytosis dynamics, while the others such as MARCO might participate in POS clearance by RPE cells either as co-receptors or via an indirect process.
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Affiliation(s)
- Quentin Rieu
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, F-75012 Paris, France; (Q.R.); (A.B.); (Y.Z.); (J.C.); (A.H.); (J.E.)
| | - Antoine Bougoüin
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, F-75012 Paris, France; (Q.R.); (A.B.); (Y.Z.); (J.C.); (A.H.); (J.E.)
| | - Yvrick Zagar
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, F-75012 Paris, France; (Q.R.); (A.B.); (Y.Z.); (J.C.); (A.H.); (J.E.)
| | - Jonathan Chatagnon
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, F-75012 Paris, France; (Q.R.); (A.B.); (Y.Z.); (J.C.); (A.H.); (J.E.)
| | - Abdallah Hamieh
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, F-75012 Paris, France; (Q.R.); (A.B.); (Y.Z.); (J.C.); (A.H.); (J.E.)
| | - Julie Enderlin
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, F-75012 Paris, France; (Q.R.); (A.B.); (Y.Z.); (J.C.); (A.H.); (J.E.)
| | - Thierry Huby
- Sorbonne Université, INSERM, UMR-S 1166, F-75013 Paris, France;
| | - Emeline F. Nandrot
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, F-75012 Paris, France; (Q.R.); (A.B.); (Y.Z.); (J.C.); (A.H.); (J.E.)
- Correspondence: ; Tel.: +33-1-5346-2541; Fax: +33-1-5346-2602
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5
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Dubois V, Chatagnon J, Thiriard A, Bauderlique-Le Roy H, Debrie AS, Coutte L, Locht C. Suppression of mucosal Th17 memory responses by acellular pertussis vaccines enhances nasal Bordetella pertussis carriage. NPJ Vaccines 2021; 6:6. [PMID: 33420041 PMCID: PMC7794405 DOI: 10.1038/s41541-020-00270-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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: 08/03/2020] [Accepted: 12/08/2020] [Indexed: 12/14/2022] Open
Abstract
Pertussis has made a spectacular rebound in countries that have switched from whole-cell (wPV) to acellular pertussis vaccines (aPV). Here, we show that, unlike wPV, aPV, while protective against lung colonization by Bordetella pertussis (Bp), did not protect BALB/c mice from nasal colonization, but instead substantially prolonged nasal carriage. aPV prevented the natural induction of nasal interleukin-17 (IL-17)-producing and interferon-γ (IFN-γ)-producing CD103+ CD44+ CD69+ CD4+-resident memory T (TRM) cells. IL-17-deficient, but not IFN-γ-deficient, mice failed to clear nasal Bp, indicating a key role of IL-17+ TRM cells in the control of nasal infection. These cells appeared essential for neutrophil recruitment, crucial for clearance of Bp tightly bound to the nasal epithelium. Transfer of IL-17+ TRM cells from Bp-infected mice to IL-17-deficient mice resulted in neutrophil recruitment and protection against nasal colonization. Thus, aPV may have augmented the Bp reservoir by inhibiting natural TRM cell induction and neutrophil recruitment, thereby contributing to the pertussis resurgence.
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Affiliation(s)
- Violaine Dubois
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR9017-CIIL-Center for Infection and Immunity of Lille, Univ. Lille, 59000, Lille, France.
| | - Jonathan Chatagnon
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR9017-CIIL-Center for Infection and Immunity of Lille, Univ. Lille, 59000, Lille, France
| | - Anaïs Thiriard
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR9017-CIIL-Center for Infection and Immunity of Lille, Univ. Lille, 59000, Lille, France
| | - Hélène Bauderlique-Le Roy
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, US41-UMS 2014-PLBS, Univ. Lille, 59000, Lille, France
| | - Anne-Sophie Debrie
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR9017-CIIL-Center for Infection and Immunity of Lille, Univ. Lille, 59000, Lille, France
| | - Loïc Coutte
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR9017-CIIL-Center for Infection and Immunity of Lille, Univ. Lille, 59000, Lille, France
| | - Camille Locht
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR9017-CIIL-Center for Infection and Immunity of Lille, Univ. Lille, 59000, Lille, France
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6
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Rivera-Millot A, Slupek S, Chatagnon J, Roy G, Saliou JM, Billon G, Alaimo V, Hot D, Salomé-Desnoulez S, Locht C, Antoine R, Jacob-Dubuisson F. Streamlined copper defenses make Bordetella pertussis reliant on custom-made operon. Commun Biol 2021; 4:46. [PMID: 33420409 PMCID: PMC7794356 DOI: 10.1038/s42003-020-01580-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 02/11/2020] [Accepted: 12/07/2020] [Indexed: 01/29/2023] Open
Abstract
Copper is both essential and toxic to living beings, which tightly controls its intracellular concentration. At the host-pathogen interface, copper is used by phagocytic cells to kill invading microorganisms. We investigated copper homeostasis in Bordetella pertussis, which lives in the human respiratory mucosa and has no environmental reservoir. B. pertussis has considerably streamlined copper homeostasis mechanisms relative to other Gram-negative bacteria. Its single remaining defense line consists of a metallochaperone diverted for copper passivation, CopZ, and two peroxide detoxification enzymes, PrxGrx and GorB, which together fight stresses encountered in phagocytic cells. Those proteins are encoded by an original, composite operon assembled in an environmental ancestor, which is under sensitive control by copper. This system appears to contribute to persistent infection in the nasal cavity of B. pertussis-infected mice. Combining responses to co-occurring stresses in a tailored operon reveals a strategy adopted by a host-restricted pathogen to optimize survival at minimal energy expenditure.
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Affiliation(s)
- Alex Rivera-Millot
- grid.463727.30000 0004 0386 3856Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019- UMR 9017-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - Stéphanie Slupek
- grid.463727.30000 0004 0386 3856Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019- UMR 9017-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - Jonathan Chatagnon
- grid.463727.30000 0004 0386 3856Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019- UMR 9017-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - Gauthier Roy
- grid.463727.30000 0004 0386 3856Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019- UMR 9017-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - Jean-Michel Saliou
- grid.410463.40000 0004 0471 8845Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, US 41 - UMS 2014 - PLBS, F-59000 Lille, France
| | - Gabriel Billon
- grid.503422.20000 0001 2242 6780Univ. Lille, CNRS, UMR 8516 – LASIRE – Laboratoire de Spectroscopie pour les Interactions, la Réactivité et l’Environnement, F-59000 Lille, France
| | - Véronique Alaimo
- grid.503422.20000 0001 2242 6780Univ. Lille, CNRS, UMR 8516 – LASIRE – Laboratoire de Spectroscopie pour les Interactions, la Réactivité et l’Environnement, F-59000 Lille, France
| | - David Hot
- grid.410463.40000 0004 0471 8845Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, US 41 - UMS 2014 - PLBS, F-59000 Lille, France
| | - Sophie Salomé-Desnoulez
- grid.463727.30000 0004 0386 3856Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019- UMR 9017-CIIL-Center for Infection and Immunity of Lille, Lille, France ,grid.503422.20000 0001 2242 6780Bio Imaging Center Lille platform (BICeL), Univ. Lille, Lille, France
| | - Camille Locht
- grid.463727.30000 0004 0386 3856Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019- UMR 9017-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - Rudy Antoine
- grid.463727.30000 0004 0386 3856Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019- UMR 9017-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - Françoise Jacob-Dubuisson
- grid.463727.30000 0004 0386 3856Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019- UMR 9017-CIIL-Center for Infection and Immunity of Lille, Lille, France
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7
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Radulovic K, Normand S, Rehman A, Delanoye-Crespin A, Chatagnon J, Delacre M, Waldschmitt N, Poulin LF, Iovanna J, Ryffel B, Rosenstiel P, Chamaillard M. A dietary flavone confers communicable protection against colitis through NLRP6 signaling independently of inflammasome activation. Mucosal Immunol 2018; 11:811-819. [PMID: 29139477 DOI: 10.1038/mi.2017.87] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 09/05/2017] [Indexed: 02/04/2023]
Abstract
Flavones represent a class of polyphenols that are found in many plant-derived food sources. Herein, we provide evidence that the anti-inflammatory and antiproliferative effect of the flavone apigenin relies on the regulation of the gut microbiota by the NOD-like receptor family pyrin domain containing 6 (Nlrp6). When challenged by dextran sulfate sodium (DSS) in drinking water, mice were protected against colitis upon cohousing with apigenin-treated animals. In contrast, the protective effect was lost in the absence of Nlrp6. Sequencing of the 16S ribosomal RNA gene revealed a shift in the composition of the gut microbiota in apigenin-treated mice that was not observed in the absence of Nlrp6. Equally important, we find that the antiproliferative effect of apigenin was dominantly transmitted after cohousing, while being compromised in Nlrp6-deficient mice. In contrast, the symptoms of colitis were alleviated upon apigenin administration even in the absence of either caspase-1/11 or Asc. Collectively, these data indicate that apigenin modulated an inflammasome-independent mechanism by which Nlrp6 reprograms the gut microbiota for protecting mice against colitis. Our study highlights a modulation of the Nlrp6 signaling pathway by a prominent constituent of the human diet that may point toward improved ways to treat inflammatory bowel diseases.
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Affiliation(s)
- K Radulovic
- Univ. Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France.,University Hospital Basel and University of Basel, Department of Biomedicine, Basel, Switzerland
| | - S Normand
- Univ. Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
| | - A Rehman
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - A Delanoye-Crespin
- Univ. Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
| | - J Chatagnon
- Univ. Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
| | - M Delacre
- Univ. Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
| | - N Waldschmitt
- Univ. Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
| | - L F Poulin
- Univ. Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
| | - J Iovanna
- Centre de Recherche en Cancérologie de Marseille, Inserm U1068, CNRS UMR 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, France
| | - B Ryffel
- CNRS, UMR7355; Experimental and Molecular Immunology and Neurogenetics, University of Orleans, France and IDM University of Cape Town, Orleans, France
| | - P Rosenstiel
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - M Chamaillard
- Univ. Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
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8
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Law AL, Parinot C, Chatagnon J, Gravez B, Sahel JA, Bhattacharya SS, Nandrot EF. Cleavage of Mer tyrosine kinase (MerTK) from the cell surface contributes to the regulation of retinal phagocytosis. J Biol Chem 2014; 290:4941-4952. [PMID: 25538233 DOI: 10.1074/jbc.m114.628297] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Phagocytosis of apoptotic cells by macrophages and spent photoreceptor outer segments (POS) by retinal pigment epithelial (RPE) cells requires several proteins, including MerTK receptors and associated Gas6 and protein S ligands. In the retina, POS phagocytosis is rhythmic, and MerTK is activated promptly after light onset via the αvβ5 integrin receptor and its ligand MFG-E8, thus generating a phagocytic peak. The phagocytic burst is limited in time, suggesting a down-regulation mechanism that limits its duration. Our previous data showed that MerTK helps control POS binding of integrin receptors at the RPE cell surface as a negative feedback loop. Our present results show that a soluble form of MerTK (sMerTK) is released in the conditioned media of RPE-J cells during phagocytosis and in the interphotoreceptor matrix of the mouse retina during the morning phagocytic peak. In contrast to macrophages, the two cognate MerTK ligands have an opposite effect on phagocytosis and sMerTK release, whereas the integrin ligand MFG-E8 markedly increases both phagocytosis and sMerTK levels. sMerTK acts as a decoy receptor blocking the effect of both MerTK ligands. Interestingly, stimulation of sMerTK release decreases POS binding. Conversely, blocking MerTK cleavage increased mostly POS binding by RPE cells. Therefore, our data suggest that MerTK cleavage contributes to the acute regulation of RPE phagocytosis by limiting POS binding to the cell surface.
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Affiliation(s)
- Ah-Lai Law
- INSERM, U968; Sorbonne Universités, UPMC Univ Paris 06, UMR_S968, Institut de la Vision; CNRS, UMR_7210, 17 Rue Moreau, Paris, F-75012, France
| | - Célia Parinot
- INSERM, U968; Sorbonne Universités, UPMC Univ Paris 06, UMR_S968, Institut de la Vision; CNRS, UMR_7210, 17 Rue Moreau, Paris, F-75012, France
| | - Jonathan Chatagnon
- INSERM, U968; Sorbonne Universités, UPMC Univ Paris 06, UMR_S968, Institut de la Vision; CNRS, UMR_7210, 17 Rue Moreau, Paris, F-75012, France
| | - Basile Gravez
- INSERM, U968; Sorbonne Universités, UPMC Univ Paris 06, UMR_S968, Institut de la Vision; CNRS, UMR_7210, 17 Rue Moreau, Paris, F-75012, France
| | - José-Alain Sahel
- INSERM, U968; Sorbonne Universités, UPMC Univ Paris 06, UMR_S968, Institut de la Vision; CNRS, UMR_7210, 17 Rue Moreau, Paris, F-75012, France; Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts, INSERM-Direction de l'Hospitalisation et de l'Offre de Soins Centre d'Investigation Clinique 1423, Paris, F-75012, France
| | - Shomi S Bhattacharya
- INSERM, U968; Sorbonne Universités, UPMC Univ Paris 06, UMR_S968, Institut de la Vision; CNRS, UMR_7210, 17 Rue Moreau, Paris, F-75012, France; Institute of Ophthalmology, University College London, WC1E 6BT London, United Kingdom; Andalusian Center of Molecular Biology and Regenerative Medicine (CABIMER), 41092 Sevilla, Spain
| | - Emeline F Nandrot
- INSERM, U968; Sorbonne Universités, UPMC Univ Paris 06, UMR_S968, Institut de la Vision; CNRS, UMR_7210, 17 Rue Moreau, Paris, F-75012, France.
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9
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Parinot C, Rieu Q, Chatagnon J, Finnemann SC, Nandrot EF. Large-scale purification of porcine or bovine photoreceptor outer segments for phagocytosis assays on retinal pigment epithelial cells. J Vis Exp 2014. [PMID: 25548986 DOI: 10.3791/52100] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Analysis of one of the vital functions of retinal pigment epithelial (RPE) cells, the phagocytosis of spent aged distal fragments of photoreceptor outer segments (POS) can be performed in vitro. Photoreceptor outer segments with stacks of membranous discs containing the phototransduction machinery are continuously renewed in the retina. Spent POS are eliminated daily by RPE cells. Rodent, porcine/bovine and human RPE cells recognize POS from various species in a similar manner. To facilitate performing large series of experiments with little variability, a large stock of POS can be isolated from porcine eyes and stored frozen in aliquots. This protocol takes advantage of the characteristic of photopigments that display an orange color when kept in the dark. Under dim red light, retinae are collected in a buffer from opened eyecups cut in halves. The retinal cell suspension is homogenized, filtered and loaded onto a continuous sucrose gradient. After centrifugation, POS are located in a discrete band in the upper part of the gradient that has a characteristic orange color. POS are then collected, spun, resuspended sequentially in wash buffers, counted and aliquoted. POS obtained this way can be used for phagocytosis assays and analysis of protein activation, localization or interaction at various times after POS challenge. Alternatively, POS can be labeled with fluorophores, e.g., FITC, before aliquoting for subsequent fluorescence quantification of POS binding or engulfment. Other possible applications include the use of modified POS or POS challenge combined with stress conditions to study the effect of oxidative stress or aging on RPE cells.
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Affiliation(s)
- Célia Parinot
- INSERM, U968; Sorbonne Universités, UPMC Paris 06, UMR_S 968, Institut de la Vision; CNRS, UMR_7210
| | - Quentin Rieu
- INSERM, U968; Sorbonne Universités, UPMC Paris 06, UMR_S 968, Institut de la Vision; CNRS, UMR_7210
| | - Jonathan Chatagnon
- INSERM, U968; Sorbonne Universités, UPMC Paris 06, UMR_S 968, Institut de la Vision; CNRS, UMR_7210
| | - Silvia C Finnemann
- Department of Biological Sciences, Center for Cancer, Genetic Diseases and Gene Regulation, Fordham University
| | - Emeline F Nandrot
- INSERM, U968; Sorbonne Universités, UPMC Paris 06, UMR_S 968, Institut de la Vision; CNRS, UMR_7210;
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Farkas MH, Lew DS, Sousa ME, Bujakowska K, Chatagnon J, Bhattacharya SS, Pierce EA, Nandrot EF. Mutations in pre-mRNA processing factors 3, 8, and 31 cause dysfunction of the retinal pigment epithelium. Am J Pathol 2014; 184:2641-52. [PMID: 25111227 PMCID: PMC4188860 DOI: 10.1016/j.ajpath.2014.06.026] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 06/11/2014] [Accepted: 06/13/2014] [Indexed: 10/24/2022]
Abstract
Mutations in the ubiquitously expressed pre-mRNA processing factors 3, 8, and 31 (PRPF3, PRPF8, and PRPF31) cause nonsyndromic dominant retinitis pigmentosa in humans, an inherited retinal degeneration. It is unclear what mechanisms, or which cell types of the retina, are affected. Transgenic mice with the human mutations in these genes display late-onset morphological changes in the retinal pigment epithelium (RPE). To determine whether the observed morphological changes are preceded by abnormal RPE function, we investigated its phagocytic function in Prpf3(T494M/T494M), Prpf8(H2309P/H2309P), and Prpf31(+/-) mice. We observe decreased phagocytosis in primary RPE cultures from mutant mice, and this is replicated by shRNA-mediated knockdown of PRPF31 in human ARPE-19 cells. The diurnal rhythmicity of phagocytosis is almost lost, indicated by the marked attenuation of the phagocytic burst 2 hours after light onset. The strength of adhesion between RPE apical microvilli and photoreceptor outer segments also declined during peak adhesion in all mutants. In all models, at least one of the receptors involved in binding and internalization of shed photoreceptor outer segments was subjected to changes in localization. Although the mechanism underlying these changes in RPE function is yet to be elucidated, these data are consistent with the mouse RPE being the primary cell affected by mutations in the RNA splicing factors, and these changes occur at an early age.
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Affiliation(s)
- Michael H Farkas
- Ocular Genomics Institute, Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts
| | - Deborah S Lew
- Vision Institute, INSERM, U968, Sorbonne Universités, UPMC Univ Paris 06, UMR_S 968, CNRS, UMR_7210, Paris, France
| | - Maria E Sousa
- Ocular Genomics Institute, Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts
| | - Kinga Bujakowska
- Ocular Genomics Institute, Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts; Vision Institute, INSERM, U968, Sorbonne Universités, UPMC Univ Paris 06, UMR_S 968, CNRS, UMR_7210, Paris, France
| | - Jonathan Chatagnon
- Vision Institute, INSERM, U968, Sorbonne Universités, UPMC Univ Paris 06, UMR_S 968, CNRS, UMR_7210, Paris, France
| | - Shomi S Bhattacharya
- Vision Institute, INSERM, U968, Sorbonne Universités, UPMC Univ Paris 06, UMR_S 968, CNRS, UMR_7210, Paris, France; Institute of Ophthalmology, University College London, London, United Kingdom; Andalusian Center of Molecular Biology and Regenerative Medicine, Andalusian Center for Molecular Biology and Regenerative Medicine (CABIMER), Sevilla, Spain
| | - Eric A Pierce
- Ocular Genomics Institute, Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts.
| | - Emeline F Nandrot
- Vision Institute, INSERM, U968, Sorbonne Universités, UPMC Univ Paris 06, UMR_S 968, CNRS, UMR_7210, Paris, France.
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