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Sun D, Sun Y, Janezic E, Zhou T, Johnson M, Azumaya C, Noreng S, Chiu C, Seki A, Arenzana TL, Nicoludis JM, Shi Y, Wang B, Ho H, Joshi P, Tam C, Payandeh J, Comps-Agrar L, Wang J, Rutz S, Koerber JT, Masureel M. Structural basis of antibody inhibition and chemokine activation of the human CC chemokine receptor 8. Nat Commun 2023; 14:7940. [PMID: 38040762 PMCID: PMC10692165 DOI: 10.1038/s41467-023-43601-8] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 11/14/2023] [Indexed: 12/03/2023] Open
Abstract
The C-C motif chemokine receptor 8 (CCR8) is a class A G-protein coupled receptor that has emerged as a promising therapeutic target in cancer. Targeting CCR8 with an antibody has appeared to be an attractive therapeutic approach, but the molecular basis for chemokine-mediated activation and antibody-mediated inhibition of CCR8 are not fully elucidated. Here, we obtain an antagonist antibody against human CCR8 and determine structures of CCR8 in complex with either the antibody or the endogenous agonist ligand CCL1. Our studies reveal characteristic antibody features allowing recognition of the CCR8 extracellular loops and CCL1-CCR8 interaction modes that are distinct from other chemokine receptor - ligand pairs. Informed by these structural insights, we demonstrate that CCL1 follows a two-step, two-site binding sequence to CCR8 and that antibody-mediated inhibition of CCL1 signaling can occur by preventing the second binding event. Together, our results provide a detailed structural and mechanistic framework of CCR8 activation and inhibition that expands our molecular understanding of chemokine - receptor interactions and offers insight into the development of therapeutic antibodies targeting chemokine GPCRs.
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Affiliation(s)
- Dawei Sun
- Department of Structural Biology, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Yonglian Sun
- Department of Antibody Engineering, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Eric Janezic
- Department of Biochemical and Cellular Pharmacology, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Tricia Zhou
- Department of Biochemical and Cellular Pharmacology, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Matthew Johnson
- Department of Structural Biology, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Caleigh Azumaya
- Department of Structural Biology, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Sigrid Noreng
- Department of Structural Biology, Genentech Inc., South San Francisco, CA, 94080, USA
- Septerna Inc., South San Francisco, CA, 94080, USA
| | - Cecilia Chiu
- Department of Antibody Engineering, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Akiko Seki
- Department of Cancer Immunology, Genentech Inc., South San Francisco, CA, 94080, USA
- Tune Therapeutics, Durham, NC, 27701, USA
| | - Teresita L Arenzana
- Department of Cancer Immunology, Genentech Inc., South San Francisco, CA, 94080, USA
- HIBio, South San Francisco, CA, 94080, USA
| | - John M Nicoludis
- Department of Structural Biology, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Yongchang Shi
- Department of Biochemical and Cellular Pharmacology, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Baomei Wang
- Department of Cancer Immunology, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Hoangdung Ho
- Department of Structural Biology, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Prajakta Joshi
- Department of Biomolecular Resources, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Christine Tam
- Department of Biomolecular Resources, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Jian Payandeh
- Department of Structural Biology, Genentech Inc., South San Francisco, CA, 94080, USA
- Exelixis Inc., Alameda, CA, 94502, USA
| | - Laëtitia Comps-Agrar
- Department of Biochemical and Cellular Pharmacology, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Jianyong Wang
- Department of Biochemical and Cellular Pharmacology, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Sascha Rutz
- Department of Cancer Immunology, Genentech Inc., South San Francisco, CA, 94080, USA.
| | - James T Koerber
- Department of Antibody Engineering, Genentech Inc., South San Francisco, CA, 94080, USA.
| | - Matthieu Masureel
- Department of Structural Biology, Genentech Inc., South San Francisco, CA, 94080, USA.
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Liu S, Tao Z, Lou J, Li R, Fu X, Xu J, Wang T, Zhang L, Shang W, Mao Y, Wang F. CD4 +CCR8 + Tregs in ovarian cancer: a potential effector Tregs for immune regulation. J Transl Med 2023; 21:803. [PMID: 37950246 PMCID: PMC10638792 DOI: 10.1186/s12967-023-04686-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 10/31/2023] [Indexed: 11/12/2023] Open
Abstract
BACKGROUND Tregs are key drivers of immunosuppression in solid tumors. As an important chemokine receptor on Tregs, the regulatory effect of CCR8 on tumor immunity has received more and more attention. However, the current research on CCR8 in the immune microenvironment of ovarian cancer has not been clear. METHODS Bioinformatics analysis was used to compare the transcriptome differences between CD4+ T cells in the peripheral circulation and infiltrated in ovarian tumor tissues. RT-PCR was used to detect the expression levels of chemokine receptor-related differential genes on CD4+ T cells in peripheral blood and ovarian tumor tissues. Multiparameter flow cytometry was used to detect the proportion and phenotypic characteristics of CD4+CCR8+ Tregs and CD4+CCR8- Tregs in different sample types. The expression level of CCR8 ligands was detected at multiple levels. To explore the important role of CCR8-CCL1 and CCR8-CCL18 axis in the migration and invasion of CD4+CCR8+ Tregs into ovarian tumor tissues by establishing a chemotaxis system in vitro. RESULTS In this study, significantly different gene expression profiles were found between peripheral circulating CD4+ T cells and infiltrating CD4+ T cells in ovarian tumor tissues, in which chemokine-chemokine receptor signaling pathway was significantly enriched in all three groups of differential genes. The expression level of CCR8 in infiltrating CD4+ T cells of ovarian cancer tissue was significantly higher than that in peripheral blood of healthy controls and ovarian cancer patients, and high expression of CCR8 was significantly correlated with advanced tumor stage and poor differentiation. CD4+CCR8+ Tregs are the main type of infiltrating CD4+ Tregs in ovarian tumor tissues, which have stronger immunosuppressive phenotypes, secrete more inhibitory cytokines and have stronger proliferation ability. The ligands CCL1 and CCL18 corresponding to CCR8 were significantly overexpressed in ovarian tumor tissues, and the CCR8-CCL1 and CCR8-CCL18 axis played a key role in the migration and infiltration of CD4+CCR8+ Tregs into ovarian tumor tissues. CONCLUSIONS The results of this study may help to understand the phenotypic characteristics and recruitment process of Tregs in the tumor, and provide new ideas for improving the immunosuppressive status of the ovarian cancer microenvironment.
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Affiliation(s)
- Shuna Liu
- Department of Laboratory Medicine, The First Affiliated Hospital with Nanjing Medical University, No. 300 of Guangzhou Road, Nanjing, 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing, 210029, China
| | - Ziqi Tao
- Department of Laboratory Medicine, The First Affiliated Hospital with Nanjing Medical University, No. 300 of Guangzhou Road, Nanjing, 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing, 210029, China
| | - Jianfang Lou
- Department of Laboratory Medicine, The First Affiliated Hospital with Nanjing Medical University, No. 300 of Guangzhou Road, Nanjing, 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing, 210029, China
| | - Rong Li
- Department of Laboratory Medicine, The First Affiliated Hospital with Nanjing Medical University, No. 300 of Guangzhou Road, Nanjing, 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing, 210029, China
- Department of Gynecology, Women's Hospital of Nanjing Medical University, Nanjing, 210004, China
| | - Xin Fu
- Department of Laboratory Medicine, The First Affiliated Hospital with Nanjing Medical University, No. 300 of Guangzhou Road, Nanjing, 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing, 210029, China
| | - Juan Xu
- Department of Laboratory Medicine, The First Affiliated Hospital with Nanjing Medical University, No. 300 of Guangzhou Road, Nanjing, 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing, 210029, China
- Department of Laboratory Medicine, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou, 225300, China
| | - Ting Wang
- Department of Laboratory Medicine, The First Affiliated Hospital with Nanjing Medical University, No. 300 of Guangzhou Road, Nanjing, 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing, 210029, China
| | - Lei Zhang
- Department of Laboratory Medicine, The First Affiliated Hospital with Nanjing Medical University, No. 300 of Guangzhou Road, Nanjing, 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing, 210029, China
- Department of Gynecology, The Affiliated Huaian NO.1 People's Hospital of Nanjing Medical University, Huaian, 223300, China
| | - Wenwen Shang
- Department of Laboratory Medicine, The First Affiliated Hospital with Nanjing Medical University, No. 300 of Guangzhou Road, Nanjing, 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing, 210029, China
| | - Yepeng Mao
- Department of Laboratory Medicine, The First Affiliated Hospital with Nanjing Medical University, No. 300 of Guangzhou Road, Nanjing, 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing, 210029, China
| | - Fang Wang
- Department of Laboratory Medicine, The First Affiliated Hospital with Nanjing Medical University, No. 300 of Guangzhou Road, Nanjing, 210029, China.
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing, 210029, China.
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3
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Van Damme H, Dombrecht B, Kiss M, Roose H, Allen E, Van Overmeire E, Kancheva D, Martens L, Murgaski A, Bardet PMR, Blancke G, Jans M, Bolli E, Martins MS, Elkrim Y, Dooley J, Boon L, Schwarze JK, Tacke F, Movahedi K, Vandamme N, Neyns B, Ocak S, Scheyltjens I, Vereecke L, Nana FA, Merchiers P, Laoui D, Van Ginderachter JA. Therapeutic depletion of CCR8 + tumor-infiltrating regulatory T cells elicits antitumor immunity and synergizes with anti-PD-1 therapy. J Immunother Cancer 2021; 9:e001749. [PMID: 33589525 PMCID: PMC7887378 DOI: 10.1136/jitc-2020-001749] [Citation(s) in RCA: 75] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/29/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Modulation and depletion strategies of regulatory T cells (Tregs) constitute valid approaches in antitumor immunotherapy but suffer from severe adverse effects due to their lack of selectivity for the tumor-infiltrating (ti-)Treg population, indicating the need for a ti-Treg specific biomarker. METHODS We employed single-cell RNA-sequencing in a mouse model of non-small cell lung carcinoma (NSCLC) to obtain a comprehensive overview of the tumor-infiltrating T-cell compartment, with a focus on ti-Treg subpopulations. These findings were validated by flow cytometric analysis of both mouse (LLC-OVA, MC38 and B16-OVA) and human (NSCLC and melanoma) tumor samples. We generated two CCR8-specific nanobodies (Nbs) that recognize distinct epitopes on the CCR8 extracellular domain. These Nbs were formulated as tetravalent Nb-Fc fusion proteins for optimal CCR8 binding and blocking, containing either an antibody-dependent cell-mediated cytotoxicity (ADCC)-deficient or an ADCC-prone Fc region. The therapeutic use of these Nb-Fc fusion proteins was evaluated, either as monotherapy or as combination therapy with anti-programmed cell death protein-1 (anti-PD-1), in both the LLC-OVA and MC38 mouse models. RESULTS We were able to discern two ti-Treg populations, one of which is characterized by the unique expression of Ccr8 in conjunction with Treg activation markers. Ccr8 is also expressed by dysfunctional CD4+ and CD8+ T cells, but the CCR8 protein was only prominent on the highly activated and strongly T-cell suppressive ti-Treg subpopulation of mouse and human tumors, with no major CCR8-positivity found on peripheral Tregs. CCR8 expression resulted from TCR-mediated Treg triggering in an NF-κB-dependent fashion, but was not essential for the recruitment, activation nor suppressive capacity of these cells. While treatment of tumor-bearing mice with a blocking ADCC-deficient Nb-Fc did not influence tumor growth, ADCC-prone Nb-Fc elicited antitumor immunity and reduced tumor growth in synergy with anti-PD-1 therapy. Importantly, ADCC-prone Nb-Fc specifically depleted ti-Tregs in a natural killer (NK) cell-dependent fashion without affecting peripheral Tregs. CONCLUSIONS Collectively, our findings highlight the efficacy and safety of targeting CCR8 for the depletion of tumor-promoting ti-Tregs in combination with anti-PD-1 therapy.
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MESH Headings
- Animals
- Antineoplastic Agents, Immunological/pharmacology
- Carcinoma, Lewis Lung/genetics
- Carcinoma, Lewis Lung/immunology
- Carcinoma, Lewis Lung/metabolism
- Carcinoma, Lewis Lung/therapy
- Combined Modality Therapy
- Databases, Genetic
- Female
- Gene Expression Profiling
- Humans
- Immune Checkpoint Inhibitors/pharmacology
- Lung Neoplasms/drug therapy
- Lung Neoplasms/genetics
- Lung Neoplasms/immunology
- Lung Neoplasms/metabolism
- Lymphocyte Depletion
- Lymphocytes, Tumor-Infiltrating/immunology
- Lymphocytes, Tumor-Infiltrating/metabolism
- Melanoma, Experimental/genetics
- Melanoma, Experimental/immunology
- Melanoma, Experimental/metabolism
- Melanoma, Experimental/therapy
- Mice, Inbred C57BL
- Mice, Knockout
- Molecular Targeted Therapy
- Phenotype
- Programmed Cell Death 1 Receptor/antagonists & inhibitors
- Programmed Cell Death 1 Receptor/metabolism
- RNA-Seq
- Receptors, CCR8/deficiency
- Receptors, CCR8/genetics
- Skin Neoplasms/genetics
- Skin Neoplasms/immunology
- Skin Neoplasms/metabolism
- Skin Neoplasms/therapy
- T-Lymphocytes, Regulatory/immunology
- T-Lymphocytes, Regulatory/metabolism
- Mice
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Affiliation(s)
- Helena Van Damme
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Lab, VIB Center for Inflammation Research, Brussels, Belgium
| | | | - Máté Kiss
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Lab, VIB Center for Inflammation Research, Brussels, Belgium
| | | | | | - Eva Van Overmeire
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Lab, VIB Center for Inflammation Research, Brussels, Belgium
| | - Daliya Kancheva
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Lab, VIB Center for Inflammation Research, Brussels, Belgium
| | - Liesbet Martens
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Faculty of Science, Ghent University, Ghent, Belgium
| | - Aleksandar Murgaski
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Lab, VIB Center for Inflammation Research, Brussels, Belgium
| | - Pauline Madeleine Rachel Bardet
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Lab, VIB Center for Inflammation Research, Brussels, Belgium
| | - Gillian Blancke
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- Host-Microbiota-Interaction Lab (HMI), VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Maude Jans
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- Host-Microbiota-Interaction Lab (HMI), VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Evangelia Bolli
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Lab, VIB Center for Inflammation Research, Brussels, Belgium
| | - Maria Solange Martins
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Lab, VIB Center for Inflammation Research, Brussels, Belgium
| | - Yvon Elkrim
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Lab, VIB Center for Inflammation Research, Brussels, Belgium
| | - James Dooley
- Laboratory of Lymphocyte Signalling and Development, Babraham Institute, Cambridge, Cambridgeshire, UK
| | - Louis Boon
- Polpharma Biologics, Utrecht, The Netherlands
| | | | - Frank Tacke
- Department of Medicine III, RWTH Aachen University, Aachen, Nordrhein-Westfalen, Germany
| | - Kiavash Movahedi
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Lab, VIB Center for Inflammation Research, Brussels, Belgium
| | - Niels Vandamme
- Data Mining and Modelling for Biomedicine, VIB-UGent Center for Inflammation Research, Ghent, Belgium
- Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Ghent, Belgium
| | - Bart Neyns
- Department of Medical Oncology, UZ Brussel, Brussels, Belgium
| | - Sebahat Ocak
- Institut de Recherche Expérimentale et Clinique (IREC), Pôle de Pneumologie, ORL et Dermatologie (PNEU), UCLouvain, Louvain-la-Neuve, Belgium
- Division of Pneumology, CHU UCL Namur, Yvoir, Namur, Belgium
| | - Isabelle Scheyltjens
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Lab, VIB Center for Inflammation Research, Brussels, Belgium
| | - Lars Vereecke
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- Host-Microbiota-Interaction Lab (HMI), VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Frank Aboubakar Nana
- Division of Pneumology, CHU UCL Namur, Yvoir, Namur, Belgium
- Division of Pneumology, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | | | - Damya Laoui
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Lab, VIB Center for Inflammation Research, Brussels, Belgium
| | - Jo Agnes Van Ginderachter
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Lab, VIB Center for Inflammation Research, Brussels, Belgium
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4
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Lin F, Wang L, Duan Y, Li K, Zhou J, Guang Z, Wang Y, Yang M, Qin Q, Wang Q. Expression and subcellular analyses of CCR8a/b genes with the identification of response to SGIV viral infect in orange-spotted grouper (Epinephelus coioides). Fish Shellfish Immunol 2020; 106:628-639. [PMID: 32853761 DOI: 10.1016/j.fsi.2020.08.030] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 08/02/2020] [Accepted: 08/19/2020] [Indexed: 06/11/2023]
Abstract
Chemokine receptors are a superfamily of seven transmembrane domain G-coupled receptors, and they play important roles in immune surveillance, inflammation, and development. Recently, nine CC chemokine receptors (CCRs) were identified and cloned from orange-spotted grouper (Epinephelus coioides) and annotated by phylogenetic and syntenic analyses. We detected mRNA transcripts for CCRs in healthy tissues of E. coioides, and CCR genes were highly expressed in the immune-relevant tissues. Analysis of gene expression after Singapore grouper iridovirus (SGIV) infection indicated that CCR genes are regulated in a gene-specific manner. CCR8a and CCR8b were significantly upregulated in the spleen and liver of resistant fish, indicating potential roles in immunity against the pathogen. Fluorescence microscopy revealed that CCR8a and CCR8b were expressed predominantly in the cytoplasm. Overexpression of CCR8a and CCR8b in grouper cells significantly inhibited the replication of SGIV, demonstrating that they delayed the occurrence of cytopathic effects induced by SGIV infection and inhibited viral gene transcription. CCR8a and CCR8b overexpression also significantly increased the expression of interferon (IFN)-related cytokines and activated IFN response element and IFN promoter activities. These results demonstrated that CCR8a and CCR8b might have an antiviral function against SGIV infect.
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Affiliation(s)
- Fangmei Lin
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Li Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Yanchuang Duan
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Keqi Li
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Jingxin Zhou
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Zhi Guang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Yuxin Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Min Yang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, People's Republic of China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, People's Republic of China.
| | - Qiwei Qin
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, People's Republic of China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, People's Republic of China.
| | - Qing Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, People's Republic of China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, People's Republic of China.
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5
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Sokol CL, Camire RB, Jones MC, Luster AD. The Chemokine Receptor CCR8 Promotes the Migration of Dendritic Cells into the Lymph Node Parenchyma to Initiate the Allergic Immune Response. Immunity 2018; 49:449-463.e6. [PMID: 30170811 PMCID: PMC6192021 DOI: 10.1016/j.immuni.2018.07.012] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Revised: 06/11/2018] [Accepted: 07/23/2018] [Indexed: 12/15/2022]
Abstract
The migration of mature dendritic cells (DCs) into the draining lymph node (dLN) is thought to depend solely on the chemokine receptor CCR7. CD301b+ DCs migrate into the dLN after cutaneous allergen exposure and are required for T helper 2 (Th2) differentiation. We found that CD301b+ DCs poorly upregulated CCR7 expression after allergen exposure and required a second chemokine signal, mediated by CCR8 on CD301b+ DCs and its ligand CCL8, to exit the subcapsular sinus (SCS) and enter the lymph node (LN) parenchyma. After allergen exposure, CD169+SIGN-R1+ macrophages in interfollicular regions produced CCL8, which synergized with CCL21 in a Src-kinase-dependent manner to promote CD301b+ DC migration. In CCR8-deficient mice, CD301b+ DCs remained in the SCS and were unable to enter the LN parenchyma, resulting in defective Th2 differentiation. We have defined a CCR8-dependent stepwise mechanism of DC-subset-specific migration through which LN CD169+SIGN-R1+ macrophages control the polarization of the adaptive immune response.
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Affiliation(s)
- Caroline L Sokol
- Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Ryan B Camire
- Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Michael C Jones
- Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Andrew D Luster
- Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA.
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6
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Thyagarajan HM, Lancaster JN, Lira SA, Ehrlich LIR. CCR8 is expressed by post-positive selection CD4-lineage thymocytes but is dispensable for central tolerance induction. PLoS One 2018; 13:e0200765. [PMID: 30024927 PMCID: PMC6053179 DOI: 10.1371/journal.pone.0200765] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 07/02/2018] [Indexed: 12/19/2022] Open
Abstract
Following positive selection, thymocytes migrate into the medulla where they encounter diverse self-antigens that induce central tolerance. Thymocytes expressing T cell receptors (TCRs) with high affinity for self-antigens displayed by medullary antigen presenting cells (APCs) undergo either negative selection or diversion to the regulatory T cell (Treg) lineage, thus ensuring maturation of non-autoreactive T cells. Because many self-antigens are expressed by only a small percentage of medullary thymic epithelial cells, thymocytes must enter the medulla and efficiently scan APCs therein to encounter the full array of self-antigens that induce central tolerance. Chemokine receptors play a critical role in promoting medullary entry and rapid motility of post-positive selection thymocytes. We found that the chemokine receptor CCR8 is expressed by post-positive selection CD4+ single positive (SP) thymocytes in mice, while the corresponding chemokine ligands are expressed by medullary APCs, and thus hypothesized that CCR8 would promote thymocyte medullary entry and/or rapid motility to induce negative selection. However, despite a subtle decline in thymocyte medullary accumulation and the presence of autoantibodies in aged CCR8-deficient mice, CCR8 was not required for thymocyte differentiation, rapid motility, or negative selection.
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Affiliation(s)
- Hiran M. Thyagarajan
- Department of Molecular Biosciences, Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, Texas, United States of America
| | - Jessica N. Lancaster
- Department of Molecular Biosciences, Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, Texas, United States of America
| | - Sergio A. Lira
- Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Lauren I. R. Ehrlich
- Department of Molecular Biosciences, Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, Texas, United States of America
- Livestrong Cancer Institutes, Dell Medical School, The University of Texas at Austin, Austin, Texas, United States of America
- * E-mail:
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7
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An P, Li R, Wang JM, Yoshimura T, Takahashi M, Samudralal R, O'Brien SJ, Phair J, Goedert JJ, Kirk GD, Troyer JL, Sezgin E, Buchbinder SP, Donfield S, Nelson GW, Winkler CA. Role of exonic variation in chemokine receptor genes on AIDS: CCRL2 F167Y association with pneumocystis pneumonia. PLoS Genet 2011; 7:e1002328. [PMID: 22046140 PMCID: PMC3203199 DOI: 10.1371/journal.pgen.1002328] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Accepted: 08/03/2011] [Indexed: 02/04/2023] Open
Abstract
Chromosome 3p21–22 harbors two clusters of chemokine receptor genes, several of which serve as major or minor coreceptors of HIV-1. Although the genetic association of CCR5 and CCR2 variants with HIV-1 pathogenesis is well known, the role of variation in other nearby chemokine receptor genes remain unresolved. We genotyped exonic single nucleotide polymorphisms (SNPs) in chemokine receptor genes: CCR3, CCRL2, and CXCR6 (at 3p21) and CCR8 and CX3CR1 (at 3p22), the majority of which were non-synonymous. The individual SNPs were tested for their effects on disease progression and outcomes in five treatment-naïve HIV-1/AIDS natural history cohorts. In addition to the known CCR5 and CCR2 associations, significant associations were identified for CCR3, CCR8, and CCRL2 on progression to AIDS. A multivariate survival analysis pointed to a previously undetected association of a non-conservative amino acid change F167Y in CCRL2 with AIDS progression: 167F is associated with accelerated progression to AIDS (RH = 1.90, P = 0.002, corrected). Further analysis indicated that CCRL2-167F was specifically associated with more rapid development of pneumocystis pneumonia (PCP) (RH = 2.84, 95% CI 1.28–6.31) among four major AIDS–defining conditions. Considering the newly defined role of CCRL2 in lung dendritic cell trafficking, this atypical chemokine receptor may affect PCP through immune regulation and inducing inflammation. Human chemokine receptors are cell surface proteins that may be utilized by HIV-1 for entry into host cells. DNA variation in the HIV-1 major coreceptor CCR5 affects HIV-1 infection and progression. This study comprehensively assesses the role of genetic variation of multiple chemokine receptor genes clustered in the chromosome 3p21 and 3p22 on HIV-1 disease outcomes in HIV-1 natural history cohorts. The multivariate survival analyses identified functional variants that altered disease progression rate in CCRL2, CCR3, and CCR8. CCRL2-F167Y affects the rate to AIDS development through a specific protection against pneumocystis pneumonia (PCP), a common AIDS–defining condition. Our study identified this atypical chemokine receptor CCRL2 as a key factor involved in PCP, possibly through inducing inflammation in the lung.
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MESH Headings
- Acquired Immunodeficiency Syndrome/complications
- Chromosomes, Human, Pair 3/genetics
- Cohort Studies
- Disease Progression
- Exons
- Genetic Association Studies
- HEK293 Cells
- HIV-1
- Humans
- Linkage Disequilibrium
- Pneumonia, Pneumocystis/etiology
- Pneumonia, Pneumocystis/genetics
- Polymorphism, Single Nucleotide
- Receptors, CCR/chemistry
- Receptors, CCR/genetics
- Receptors, CCR3/genetics
- Receptors, CCR8/genetics
- Receptors, CXCR6
- Receptors, Chemokine/genetics
- Receptors, Virus/genetics
- Survival Analysis
- Treatment Outcome
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Affiliation(s)
- Ping An
- Basic Research Laboratory, SAIC–Frederick, National Cancer Institute–Frederick, Frederick, Maryland, United States of America
- * E-mail: (PA); (CAW)
| | - Rongling Li
- Office of Population Genomics, National Human Genome Research Institute, Bethesda, Maryland, United States of America
| | - Ji Ming Wang
- Laboratory of Molecular Immunoregulation, National Cancer Institute–Frederick, Frederick, Maryland, United States of America
| | - Teizo Yoshimura
- Laboratory of Molecular Immunoregulation, National Cancer Institute–Frederick, Frederick, Maryland, United States of America
| | - Munehisa Takahashi
- Laboratory of Molecular Immunoregulation, National Cancer Institute–Frederick, Frederick, Maryland, United States of America
| | - Ram Samudralal
- Department of Microbiology, University of Washington School of Medicine, Seattle, Washington, United States of America
| | - Stephen J. O'Brien
- Laboratory of Genomic Diversity, National Cancer Institute–Frederick, Frederick, Maryland, United States of America
| | - John Phair
- Division of Infectious Diseases, Feinberg School of Medicine, Northwestern University Medical School, Chicago, Illinois, United States of America
| | - James J. Goedert
- Infections and Immunoepidemiology Branch, National Cancer Institute, Bethesda, Maryland, United States of America
| | - Gregory D. Kirk
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Jennifer L. Troyer
- BSP/CCR Genetics Core, SAIC–Frederick, National Cancer Institute–Frederick, Frederick, Maryland, United States of America
| | - Efe Sezgin
- Laboratory of Genomic Diversity, National Cancer Institute–Frederick, Frederick, Maryland, United States of America
| | - Susan P. Buchbinder
- San Francisco Department of Public Health, San Francisco, California, United States of America
| | | | - George W. Nelson
- BSP/CCR Genetics Core, SAIC–Frederick, National Cancer Institute–Frederick, Frederick, Maryland, United States of America
| | - Cheryl A. Winkler
- Basic Research Laboratory, SAIC–Frederick, National Cancer Institute–Frederick, Frederick, Maryland, United States of America
- * E-mail: (PA); (CAW)
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Abstract
BACKGROUND Allergic inflammation is associated with Th2-type T cells, which can be suppressed by CD4+ CD25+ regulatory T cells (Tregs). Both express chemokine receptors (CCR) 4 and CCR8, but the dynamics of expression and effect of atopic status are unknown. OBJECTIVE To examine the expression of chemokine receptors by CD4+ CD25+ and CD4+ CD25- T cells from atopic and nonatopic donors, and document response to allergen stimulation in vitro. METHODS Chemokine receptor expression was examined by flow cytometry and quantitative PCR of CD4+ CD25hi and CD4+ CD25- T cells from atopics and nonatopics. Responsiveness to chemokines was by actin polymerization. Dynamics of chemokine receptor expression in 6-day allergen-stimulated cultures was analysed by carboxyfluoroscein succinimidyl ester labelling. RESULTS CD4+ CD25hi Tregs preferentially expressed CCR3, CCR4, CCR5, CCR6 and CCR8. CD4+ CD25hi Tregs responded to the chemokine ligands for CCR4, CCR6 and CCR8 (CCL17, 22, 20 and 1 respectively), with no differences between atopic and nonatopic donors. Over 6-day allergen stimulation, CD4+ CD25+ T-cells downregulated CCR4 and upregulated CCR7, in contrast to CD4+ CD25- effector cells, which downregulated CCR7 and upregulated CCR4. CONCLUSIONS CCR4, CCR6 and CCR8 have potential roles in localization of both CD4+ CD25+ regulatory and CD4+ CD25- effector T cells to sites of allergic inflammation. Upregulation of CCR7 and downregulation of CCR4 upon allergen stimulation of Tregs may allow their recirculation from sites of inflammation, in contrast to retention of effector T cells.
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Affiliation(s)
- D Ahern
- Leukocyte Biology Section, National Heart and Lung Institute, Imperial College London, London, UK
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