1
|
Bernardo D, Durant L, Mann ER, Bassity E, Montalvillo E, Man R, Vora R, Reddi D, Bayiroglu F, Fernández-Salazar L, English NR, Peake ST, Landy J, Lee GH, Malietzis G, Siaw YH, Murugananthan AU, Hendy P, Sánchez-Recio E, Phillips RK, Garrote JA, Scott P, Parkhill J, Paulsen M, Hart AL, Al-Hassi HO, Arranz E, Walker AW, Carding SR, Knight SC. Chemokine (C-C Motif) Receptor 2 Mediates Dendritic Cell Recruitment to the Human Colon but Is Not Responsible for Differences Observed in Dendritic Cell Subsets, Phenotype, and Function Between the Proximal and Distal Colon. Cell Mol Gastroenterol Hepatol 2015; 2:22-39.e5. [PMID: 26866054 PMCID: PMC4705905 DOI: 10.1016/j.jcmgh.2015.08.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 08/21/2015] [Indexed: 01/28/2023]
Abstract
BACKGROUND & AIMS Most knowledge about gastrointestinal (GI)-tract dendritic cells (DC) relies on murine studies where CD103+ DC specialize in generating immune tolerance with the functionality of CD11b+/- subsets being unclear. Information about human GI-DC is scarce, especially regarding regional specifications. Here, we characterized human DC properties throughout the human colon. METHODS Paired proximal (right/ascending) and distal (left/descending) human colonic biopsies from 95 healthy subjects were taken; DC were assessed by flow cytometry and microbiota composition assessed by 16S rRNA gene sequencing. RESULTS Colonic DC identified were myeloid (mDC, CD11c+CD123-) and further divided based on CD103 and SIRPα (human analog of murine CD11b) expression. CD103-SIRPα+ DC were the major population and with CD103+SIRPα+ DC were CD1c+ILT3+CCR2+ (although CCR2 was not expressed on all CD103+SIRPα+ DC). CD103+SIRPα- DC constituted a minor subset that were CD141+ILT3-CCR2-. Proximal colon samples had higher total DC counts and fewer CD103+SIRPα+ cells. Proximal colon DC were more mature than distal DC with higher stimulatory capacity for CD4+CD45RA+ T-cells. However, DC and DC-invoked T-cell expression of mucosal homing markers (β7, CCR9) was lower for proximal DC. CCR2 was expressed on circulating CD1c+, but not CD141+ mDC, and mediated DC recruitment by colonic culture supernatants in transwell assays. Proximal colon DC produced higher levels of cytokines. Mucosal microbiota profiling showed a lower microbiota load in the proximal colon, but with no differences in microbiota composition between compartments. CONCLUSIONS Proximal colonic DC subsets differ from those in distal colon and are more mature. Targeted immunotherapy using DC in T-cell mediated GI tract inflammation may therefore need to reflect this immune compartmentalization.
Collapse
Key Words
- AMOVA, analysis of molecular variance
- CCL, chemokine (C-C motif) ligand
- CCR, chemokine (C-C motif) receptor
- CCR2
- CFSE, 5-carboxy fluorescein diacetate succinimidyl ester
- DC, dendritic cells
- DL, detection limit
- Dendritic Cells
- Distal Colon
- FACS, fluorescence-activated cell sorting
- FITC, fluorescein isothiocyanate
- GI, gastrointestinal
- Human Gastrointestinal Tract
- IL, interleukin
- ILT3, Ig-like transcript 3
- LPMC, lamina propria mononuclear cells
- Microbiota
- Mφ, macrophages
- PBMC, peripheral blood mononuclear cells
- PCR, polymerase chain reaction
- Proximal Colon
- RALDH2, retinaldehyde dehydrogenase type 2
- SIRPα, signal regulatory protein α
- SPB, sodium phosphate buffer
- Treg, regulatory T-cells
- mDC, myeloid dendritic cell
- pDC, plasmacytoid dendritic cell
Collapse
Affiliation(s)
- David Bernardo
- Antigen Presentation Research Group, Imperial College London, Harrow, United Kingdom
| | - Lydia Durant
- Antigen Presentation Research Group, Imperial College London, Harrow, United Kingdom
| | - Elizabeth R. Mann
- Antigen Presentation Research Group, Imperial College London, Harrow, United Kingdom,Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Elizabeth Bassity
- Gut Health and Food Safety Programme, Institute of Food Research, Norwich, United Kingdom
| | - Enrique Montalvillo
- Mucosal Immunology Group, Instituto de Biología y Genética Molecular (IBGM), Universidad de Valladolid–CSIC, Valladolid, Spain
| | - Ripple Man
- St. Mark’s Hospital, North West London Hospitals NHS Trust, Harrow, United Kingdom
| | - Rakesh Vora
- Antigen Presentation Research Group, Imperial College London, Harrow, United Kingdom,St. Mark’s Hospital, North West London Hospitals NHS Trust, Harrow, United Kingdom
| | - Durga Reddi
- Antigen Presentation Research Group, Imperial College London, Harrow, United Kingdom
| | - Fahri Bayiroglu
- Department of Physiology, Faculty of Medicine, Yildirim Beyazit University, Ankara, Turkey,Faculty of Farmacy, Agri İbrahim Cecen University, Agri, Turkey
| | - Luis Fernández-Salazar
- Gastroenterology Service, Hospital Clínico Universitario de Valladolid, Valladolid, Spain
| | - Nick R. English
- Antigen Presentation Research Group, Imperial College London, Harrow, United Kingdom
| | - Simon T.C. Peake
- Antigen Presentation Research Group, Imperial College London, Harrow, United Kingdom,St. Mark’s Hospital, North West London Hospitals NHS Trust, Harrow, United Kingdom
| | - Jon Landy
- Antigen Presentation Research Group, Imperial College London, Harrow, United Kingdom,St. Mark’s Hospital, North West London Hospitals NHS Trust, Harrow, United Kingdom
| | - Gui H. Lee
- Antigen Presentation Research Group, Imperial College London, Harrow, United Kingdom,St. Mark’s Hospital, North West London Hospitals NHS Trust, Harrow, United Kingdom
| | - George Malietzis
- Antigen Presentation Research Group, Imperial College London, Harrow, United Kingdom,St. Mark’s Hospital, North West London Hospitals NHS Trust, Harrow, United Kingdom
| | - Yi Harn Siaw
- Antigen Presentation Research Group, Imperial College London, Harrow, United Kingdom,St. Mark’s Hospital, North West London Hospitals NHS Trust, Harrow, United Kingdom
| | - Aravinth U. Murugananthan
- Antigen Presentation Research Group, Imperial College London, Harrow, United Kingdom,St. Mark’s Hospital, North West London Hospitals NHS Trust, Harrow, United Kingdom
| | - Phil Hendy
- Antigen Presentation Research Group, Imperial College London, Harrow, United Kingdom,St. Mark’s Hospital, North West London Hospitals NHS Trust, Harrow, United Kingdom
| | - Eva Sánchez-Recio
- Antigen Presentation Research Group, Imperial College London, Harrow, United Kingdom
| | - Robin K.S. Phillips
- St. Mark’s Hospital, North West London Hospitals NHS Trust, Harrow, United Kingdom
| | - Jose A. Garrote
- Mucosal Immunology Group, Instituto de Biología y Genética Molecular (IBGM), Universidad de Valladolid–CSIC, Valladolid, Spain,Genetics and Molecular Biology Department, Clinical Laboratory Service, Hospital Universitario Rio Hortega, Valladolid, Spain
| | - Paul Scott
- Pathogen Genomics Group, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridgeshire, United Kingdom
| | - Julian Parkhill
- Pathogen Genomics Group, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridgeshire, United Kingdom
| | - Malte Paulsen
- National Heart and Lung Institute, Imperial College London, London
| | - Ailsa L. Hart
- St. Mark’s Hospital, North West London Hospitals NHS Trust, Harrow, United Kingdom
| | - Hafid O. Al-Hassi
- Antigen Presentation Research Group, Imperial College London, Harrow, United Kingdom
| | - Eduardo Arranz
- St. Mark’s Hospital, North West London Hospitals NHS Trust, Harrow, United Kingdom
| | - Alan W. Walker
- Pathogen Genomics Group, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridgeshire, United Kingdom,Microbiology Group, Rowett Institute of Nutrition and Health, University of Aberdeen, Aberdeen, United Kingdom
| | - Simon R. Carding
- Gut Health and Food Safety Programme, Institute of Food Research, Norwich, United Kingdom,Norwich Medical School, University of East Anglia, Norwich, United Kingdom
| | - Stella C. Knight
- Antigen Presentation Research Group, Imperial College London, Harrow, United Kingdom,Correspondence Address correspondence to: Stella C. Knight, PhD, Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark’s Campus, Watford Road, Harrow, HA1 3UJ, United Kingdom. fax: +44 (0) 20 8869 3532.Antigen Presentation Research GroupImperial College LondonNorthwick Park and St. Mark’s Campus, Watford RoadHarrowHA1 3UJUnited Kingdom
| |
Collapse
|