1
|
Cario M, Gauthier Y, Lepreux S, Rambert J, Dakdaki A, Lafon M, Abouqal R, Benzekri L. 512 Varicella-zoster virus in actively spreading segmental vitiligo skin. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.527] [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: 11/19/2022]
|
2
|
Martins C, Drullion C, Migayron L, Jacquemin C, Rambert J, Merhi R, Taieb A, Reza Rezvani H, Seneschal J, Boniface K. Le mélanocyte : un acteur majeur dans la réponse inflammatoire épidermique induite par les lymphocytes T cutanés au cours du vitiligo. Ann Dermatol Venereol 2020. [DOI: 10.1016/j.annder.2020.08.031] [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: 12/01/2022]
|
3
|
Pavlovsky M, Sarig O, Peled A, Mohamad J, Samuelov L, Malki L, Sprecher E, Taieb A, Rambert J, Cario M. 199 ENPP1: connecting calcification, keratinization and pigmentation. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.200] [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: 11/25/2022]
|
4
|
Boukhedouni N, Martins C, Drullion C, Garnier J, Barrault C, Rambert J, Taieb A, Bernard F, Seneschal J, Boniface K. 533 Type-1 cytokines induce depigmentation through JAK/STAT signaling, MMP9 production and disruption of E-cadherin expression. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.448] [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: 11/28/2022]
|
5
|
Boukhedouni N, Martins C, Darrigade A, Barrault C, Garnier J, Rambert J, Taieb A, Bernard F, Seneschal J, Boniface K. 1225 Paving the road to explain melanocyte loss in vitiligo: An uncovered role of matrix metalloprotease MMP9. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1240] [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: 11/17/2022]
|
6
|
Jacquemin C, Rambert J, Guillet S, Thiolat D, Boukhedouni N, Doutre MS, Darrigade AS, Ezzedine K, Blanco P, Taieb A, Boniface K, Seneschal J. Heat shock protein 70 potentiates interferon alpha production by plasmacytoid dendritic cells: relevance for cutaneous lupus and vitiligo pathogenesis. Br J Dermatol 2017; 177:1367-1375. [PMID: 28380264 DOI: 10.1111/bjd.15550] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/31/2017] [Indexed: 12/20/2022]
Abstract
BACKGROUND Plasmacytoid dendritic cells (pDCs) are a subset of dendritic cells specialized in the production of type I interferon (IFN-α/β) and involved in various cutaneous inflammatory and autoimmune disorders, such as cutaneous lupus erythematosus (CLE) and vitiligo. Heat shock proteins (HSPs) are molecular chaperones essential for maintaining cellular functions, but they can act as a danger signal during inflammation. OBJECTIVES To decipher the role of HSP70 in the production of IFN-α by pDCs in CLE and vitiligo. METHODS Expression of HSP70 and CD123+ pDCs was analysed by immunohistochemistry or immunofluorescence in CLE and vitiligo skin samples. Flow cytometry was performed to analyse expression of HSP70 receptors, activation markers on pDCs and DNA uptake by pDCs in the presence of HSP70. The impact of HSP70 on DNA-induced IFN-α secretion by pDCs was evaluated by enzyme-linked immunosorbent assay (ELISA). The effect of IFN-α on chemokine (C-X-C motif) ligand 9 (CXCL9)/10 gene and protein expression by keratinocytes was determined by real-time polymerase chain reaction and ELISA. RESULTS Infiltration of pDCs in CLE and progressive vitiligo was primarily located in the epidermis, close to keratinocytes expressing HSP70. In vitro experiments revealed that the pDCs expressing HSP70 receptor Lox-1 (lectin-like oxidized low-density lipoprotein-receptor-1) were able to aggregate HSP70. Exogenous HSP70 induced activation of pDCs and increased the uptake of exogenous DNA. Furthermore, HSP70 potentiated DNA-induced IFN-α production by pDCs. Finally, IFN-α induced expression of CXCL9 and CXCL10 by keratinocytes. CONCLUSIONS These data demonstrate that interaction between HSP70 and pDCs in CLE and vitiligo is a prerequisite for the enhancement of IFN-α production, and could be an interesting target.
Collapse
Affiliation(s)
- C Jacquemin
- INSERM U1035, BMGIC, Immuno-dermatology ATIP-AVENIR, Bordeaux, France
| | | | - S Guillet
- Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, Bordeaux, France
| | - D Thiolat
- INSERM U1035, BMGIC, Immuno-dermatology ATIP-AVENIR, Bordeaux, France
| | - N Boukhedouni
- INSERM U1035, BMGIC, Immuno-dermatology ATIP-AVENIR, Bordeaux, France
| | - M-S Doutre
- Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, Bordeaux, France
| | - A-S Darrigade
- Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, Bordeaux, France
| | - K Ezzedine
- Department of Dermatology, AP-HP, Hôpital Henri-Mondor, Créteil, France
| | - P Blanco
- CNRS/UMR 5164, Immuno ConcEpT, University of Bordeaux, Bordeaux, France
| | - A Taieb
- INSERM U1035, BMGIC, Immuno-dermatology ATIP-AVENIR, Bordeaux, France.,Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, Bordeaux, France
| | - K Boniface
- INSERM U1035, BMGIC, Immuno-dermatology ATIP-AVENIR, Bordeaux, France
| | - J Seneschal
- INSERM U1035, BMGIC, Immuno-dermatology ATIP-AVENIR, Bordeaux, France.,Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, Bordeaux, France
| |
Collapse
|
7
|
Jacquemin C, Guillet S, Rambert J, Thiolat D, Ezzedine K, Blanco P, Bertolotti A, Taieb A, Boniface K, Seneschal J. 366 HSP70 enhances the production of interferon-alpha by plasmacytoid dendritic cells: Relevance for cutaneous lupus and vitiligo pathogenesis. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.06.386] [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: 11/29/2022]
|
8
|
Guillet S, Rambert J, Lucchese F, Thiolat D, Blanco P, Taieb A, Boniface K, Seneschal J. Implication de la protéine de choc thermique HSP72 dans l’activation des cellules dendritiques plasmacytoïdes au cours du lupus érythémateux cutané. Ann Dermatol Venereol 2015. [DOI: 10.1016/j.annder.2015.10.077] [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: 10/22/2022]
|
9
|
Mossalayi MD, Rambert J, Renouf E, Micouleau M, Mérillon JM. Grape polyphenols and propolis mixture inhibits inflammatory mediator release from human leukocytes and reduces clinical scores in experimental arthritis. Phytomedicine 2014; 21:290-297. [PMID: 24055518 DOI: 10.1016/j.phymed.2013.08.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [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: 06/11/2013] [Revised: 07/01/2013] [Accepted: 08/09/2013] [Indexed: 06/02/2023]
Abstract
Polyphenols from red fruits and bee-derived propolis (PR) are bioactive natural products in various in vitro and in vivo models. The present study shows that hematotoxicity-free doses of grape polyphenols (GPE) and PR differentially decreased the secretion of pro-inflammatory cytokines from activated human peripheral blood leucocytes. While GPE inhibited the monocytes/macrophage response, propolis decreased both monokines and interferon γ (IFNγ) production. When used together, their distinct effects lead to the attenuation of all inflammatory mediators, as supported by a significant modulation of the transcriptomic profile of pro-inflammatory genes in human leukocytes. To enforce in vitro data, GPE+PR were tested for their ability to improve clinical scores and cachexia in chronic rat adjuvant-induced arthritis (AA). Extracts significantly reduced arthritis scores and cachexia, and this effect was more significant in animals receiving continuous low doses compared to those receiving five different high doses. Animals treated daily had significantly better clinical scores than corticoid-treated rats. Together, these findings indicate that the GPE+PR combination induces potent anti-inflammatory activity due to their complementary immune cell modulation.
Collapse
Affiliation(s)
- M D Mossalayi
- Univ. de Bordeaux, Laboratoire d'Immunologie, INSERM U1035, Faculté de Pharmacie, F-33076 Bordeaux, France
| | - J Rambert
- Univ. de Bordeaux, Laboratoire d'Immunologie, INSERM U1035, Faculté de Pharmacie, F-33076 Bordeaux, France
| | - E Renouf
- Univ. de Bordeaux, ISVV, Polyphénols Biotech, Groupe d'Etude des Substances Végétales à Activité Biologique, EA 3675, F-33140 Villenave d'Ornon, France
| | - M Micouleau
- Univ. de Bordeaux, ISVV, Polyphénols Biotech, Groupe d'Etude des Substances Végétales à Activité Biologique, EA 3675, F-33140 Villenave d'Ornon, France
| | - J M Mérillon
- Univ. de Bordeaux, ISVV, Polyphénols Biotech, Groupe d'Etude des Substances Végétales à Activité Biologique, EA 3675, F-33140 Villenave d'Ornon, France.
| |
Collapse
|
10
|
Merillon JM, Micouleau M, Mossalayi M, Rambert J, Renouf E. P057 Raisin et propolis : activité anti-inflammatoire. NUTR CLIN METAB 2013. [DOI: 10.1016/s0985-0562(13)70389-3] [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: 10/25/2022]
|