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De Santis S, Galleggiante V, Scandiffio L, Liso M, Sommella E, Sobolewski A, Spilotro V, Pinto A, Campiglia P, Serino G, Santino A, Notarnicola M, Chieppa M. Secretory Leukoprotease Inhibitor ( Slpi) Expression Is Required for Educating Murine Dendritic Cells Inflammatory Response Following Quercetin Exposure. Nutrients 2017; 9:nu9070706. [PMID: 28684695 PMCID: PMC5537821 DOI: 10.3390/nu9070706] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [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: 04/21/2017] [Revised: 06/29/2017] [Accepted: 07/04/2017] [Indexed: 02/07/2023] Open
Abstract
Dendritic cells' (DCs) ability to present antigens and initiate the adaptive immune response confers them a pivotal role in immunological defense against hostile infection and, at the same time, immunological tolerance towards harmless components of the microbiota. Food products can modulate the inflammatory status of intestinal DCs. Among nutritionally-derived products, we investigated the ability of quercetin to suppress inflammatory cytokines secretion, antigen presentation, and DCs migration towards the draining lymph nodes. We recently identified the Slpi expression as a crucial checkpoint required for the quercetin-induced inflammatory suppression. Here we demonstrate that Slpi-KO DCs secrete a unique panel of cytokines and chemokines following quercetin exposure. In vivo, quercetin-enriched food is able to induce Slpi expression in the ileum, while little effects are detectable in the duodenum. Furthermore, Slpi expressing cells are more frequent at the tip compared to the base of the intestinal villi, suggesting that quercetin exposure could be more efficient for DCs projecting periscopes in the intestinal lumen. These data suggest that quercetin-enriched nutritional regimes may be efficient for suppressing inflammatory syndromes affecting the ileo-colonic tract.
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Affiliation(s)
- Stefania De Santis
- National Institute of Gastroenterology "S. de Bellis", Institute of Research, Via Turi, 27, 70013 Castellana Grotte, Italy.
- Institute of Sciences of Food Production C.N.R., Unit of Lecce, via Monteroni, 73100 Lecce, Italy.
| | - Vanessa Galleggiante
- National Institute of Gastroenterology "S. de Bellis", Institute of Research, Via Turi, 27, 70013 Castellana Grotte, Italy.
| | - Letizia Scandiffio
- National Institute of Gastroenterology "S. de Bellis", Institute of Research, Via Turi, 27, 70013 Castellana Grotte, Italy.
| | - Marina Liso
- National Institute of Gastroenterology "S. de Bellis", Institute of Research, Via Turi, 27, 70013 Castellana Grotte, Italy.
| | - Eduardo Sommella
- Department of Pharmacy, School of Pharmacy, University of Salerno, 84084 Fisciano, Italy.
| | | | - Vito Spilotro
- National Institute of Gastroenterology "S. de Bellis", Institute of Research, Via Turi, 27, 70013 Castellana Grotte, Italy.
| | - Aldo Pinto
- Department of Pharmacy, School of Pharmacy, University of Salerno, 84084 Fisciano, Italy.
| | - Pietro Campiglia
- Department of Pharmacy, School of Pharmacy, University of Salerno, 84084 Fisciano, Italy.
- European Biomedical Research Institute of Salerno (EBRIS), Via S. de Renzi, 3, 84125 Salerno, Italy.
| | - Grazia Serino
- National Institute of Gastroenterology "S. de Bellis", Institute of Research, Via Turi, 27, 70013 Castellana Grotte, Italy.
| | - Angelo Santino
- Institute of Sciences of Food Production C.N.R., Unit of Lecce, via Monteroni, 73100 Lecce, Italy.
| | - Maria Notarnicola
- National Institute of Gastroenterology "S. de Bellis", Institute of Research, Via Turi, 27, 70013 Castellana Grotte, Italy.
| | - Marcello Chieppa
- National Institute of Gastroenterology "S. de Bellis", Institute of Research, Via Turi, 27, 70013 Castellana Grotte, Italy.
- Department of Pharmacy, School of Pharmacy, University of Salerno, 84084 Fisciano, Italy.
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