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Kwantwi LB, Rosen ST, Querfeld C. The role of signaling lymphocyte activation molecule family receptors in hematologic malignancies. Curr Opin Oncol 2024; 36:449-455. [PMID: 39007334 DOI: 10.1097/cco.0000000000001067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
PURPOSE OF REVIEW In this review, we provide an overview of the current understanding of SLAM-family receptors in hematologic malignancies. We highlighted their contribution to the disease pathogenesis and targeting strategies to improve therapeutic outcomes. RECENT FINDINGS Emerging studies have reported the tumor-promoting role of SLAM-family receptors in various hematologic malignancies, including chronic lymphocytic leukemia, acute myeloid leukemia, and multiple myeloma. Specifically, they regulate the interaction between malignant cells and the tumor microenvironment to promote apoptosis resistance, therapeutic resistance, impairment of antitumor and tumor progression. SUMMARY SLAM-family receptors promote the progression of hematologic malignancies by regulating the interaction between malignant cells and the tumor microenvironment. This provides the rationale that SLAM-targeted therapies are appealing strategies to enhance therapeutic outcomes in patients.
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Affiliation(s)
| | - Steven T Rosen
- Department of Hematology & Hematopoietic Cell Transplantation
- Beckman Research Institute, Duarte, California, USA
| | - Christiane Querfeld
- Department of Pathology
- Department of Hematology & Hematopoietic Cell Transplantation
- Division of Dermatology, City of Hope Medical Center
- Beckman Research Institute, Duarte, California, USA
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Zhou LX, Jiang YZ, Li XQ, Zhang JM, Li SP, Wei L, Zhang HM, Zhou GP, Chen XJ, Sun LY, Zhu ZJ. Myeloid-derived suppressor cells-induced exhaustion of CD8 + T-cell participates in rejection after liver transplantation. Cell Death Dis 2024; 15:507. [PMID: 39013845 PMCID: PMC11252260 DOI: 10.1038/s41419-024-06834-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 06/04/2024] [Accepted: 06/13/2024] [Indexed: 07/18/2024]
Abstract
Liver transplantation (LT) rejection remains the most pervasive problem associated with this procedure, while the mechanism involved is still complicated and undefined. One promising solution may involve the use of myeloid-derived suppressor cells (MDSC). However, the immunological mechanisms underlying the effects of MDSC after LT remain unclear. This study is meant to clarify the role MDSCs play after liver transplantation. In this study, we collected liver tissue and peripheral blood mononuclear cells (PBMC) from LT patients showing varying degrees of rejection, as well as liver and spleen tissue samples from mice LT models. These samples were then analyzed using flow cytometry, immunohistochemistry and multiple immunofluorescence. M-MDSCs and CD8 + T-cells extracted from C57/BL6 mice were enriched and cocultured for in vitro experiments. Results, as obtained in both LT patients and LT mice model, revealed that the proportion and frequency of M-MDSC and PD-1 + T-cells increased significantly under conditions associated with a high degree of LT rejection. Within the LT rejection group, our immunofluorescence results showed that a close spatial contiguity was present between PD-1 + T-cells and M-MDSCs in these liver tissue samples and the proportion of CD84/PD-L1 double-positive M-MDSC was greater than that of G-MDSC. There was a positive correlation between the activity of CD84 and immunosuppressive function of M-MDSCs including PD-L1 expression and reactive oxygen species (ROS) production, as demonstrated in our in vitro model. M-MDSCs treated with CD84 protein were able to induce co-cultured CD8 + T-cells to express high levels of exhaustion markers. We found that CD84 regulated M-MDSC function via expression of PD-L1 through activation of the Akt/Stat3 pathway. These results suggest that the capacity for CD84 to regulate M-MDSC induction of CD8 + T-cell exhaustion may play a key role in LT rejection. Such findings provide important, new insights into the mechanisms of tolerance induction in LT.
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Affiliation(s)
- Liu-Xin Zhou
- Liver Transplantation Center, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- State Key Lab of Digestive Health, Beijing, China
| | - Yi-Zhou Jiang
- Liver Transplantation Center, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- State Key Lab of Digestive Health, Beijing, China
- Department of Critical Liver Diseases, Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Xin-Qiang Li
- Organ Transplantation Center, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jin-Ming Zhang
- Liver Transplantation Center, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- State Key Lab of Digestive Health, Beijing, China
| | - Shi-Peng Li
- Department of Hepatopancreaticobiliary Surgery, Henan Provincial People's Hospital, Zhengzhou University, Zhengzhou, China
| | - Lin Wei
- Liver Transplantation Center, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- State Key Lab of Digestive Health, Beijing, China
| | - Hai-Ming Zhang
- Liver Transplantation Center, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- State Key Lab of Digestive Health, Beijing, China
| | - Guang-Peng Zhou
- Liver Transplantation Center, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- State Key Lab of Digestive Health, Beijing, China
| | - Xiao-Jie Chen
- Liver Transplantation Center, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- State Key Lab of Digestive Health, Beijing, China
| | - Li-Ying Sun
- Liver Transplantation Center, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- State Key Lab of Digestive Health, Beijing, China
- Department of Critical Liver Diseases, Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Zhi-Jun Zhu
- Liver Transplantation Center, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China.
- State Key Lab of Digestive Health, Beijing, China.
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Kľoc D, Kurhajec S, Huniadi M, Sýkora J, Guman T, Šarišský M. SLAM Family Receptors in B Cell Chronic Lymphoproliferative Disorders. Int J Mol Sci 2024; 25:4014. [PMID: 38612827 PMCID: PMC11012012 DOI: 10.3390/ijms25074014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/28/2024] [Accepted: 03/31/2024] [Indexed: 04/14/2024] Open
Abstract
The signaling lymphocytic activation molecule (SLAM) receptor family (SLAMF) consists of nine glycoproteins that belong to the CD2 superfamily of immunoglobulin (Ig) domain-containing molecules. SLAMF receptors modulate the differentiation and activation of a wide range of immune cells. Individual SLAMF receptors are expressed on the surface of hematopoietic stem cells, hematopoietic progenitor cells, B cells, T cells, NK cells, NKT cells, monocytes, macrophages, dendritic cells, neutrophils, and platelets. The expression of SLAMF receptors was studied during normal B cell maturation. Several SLAMF receptors were also detected in cancer cell lines of B-lymphoid origin and in pathological B cells from patients with B cell chronic lymphoproliferative disorders (B-CLPD), the most frequent hematological malignancies in adults. This review summarizes current knowledge on the expression of SLAMF receptors and their adaptor proteins SAP and EAT-2 in B-CLPD. Several SLAMF receptors could be regarded as potential diagnostic and differential diagnostic markers, prognostic factors, and targets for the development of novel drugs for patients with B-CLPD.
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Affiliation(s)
- Dominik Kľoc
- Department of Pharmacology, Faculty of Medicine, Pavol Jozef Šafárik University in Košice, Trieda SNP 1, 04011 Košice, Slovakia; (D.K.); (M.H.)
| | - Slavomír Kurhajec
- Department of Pharmaceutical Technology, Pharmacognosy, and Botany, University of Veterinary Medicine and Pharmacy, Komenského 73, 04181 Košice, Slovakia;
| | - Mykhailo Huniadi
- Department of Pharmacology, Faculty of Medicine, Pavol Jozef Šafárik University in Košice, Trieda SNP 1, 04011 Košice, Slovakia; (D.K.); (M.H.)
| | - Ján Sýkora
- Department of Haematology and Oncohaematology, Faculty of Medicine, Pavol Jozef Šafárik University in Košice and Louis Pasteur University Hospital Košice, Trieda SNP 1, 04011 Košice, Slovakia; (J.S.); (T.G.)
| | - Tomáš Guman
- Department of Haematology and Oncohaematology, Faculty of Medicine, Pavol Jozef Šafárik University in Košice and Louis Pasteur University Hospital Košice, Trieda SNP 1, 04011 Košice, Slovakia; (J.S.); (T.G.)
| | - Marek Šarišský
- Department of Pharmacology, Faculty of Medicine, Pavol Jozef Šafárik University in Košice, Trieda SNP 1, 04011 Košice, Slovakia; (D.K.); (M.H.)
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Zheng Y, Zhao J, Zhou M, Wei K, Jiang P, Xu L, Chang C, Shan Y, Xu L, Shi Y, Schrodi SJ, Guo S, He D. Role of signaling lymphocytic activation molecule family of receptors in the pathogenesis of rheumatoid arthritis: insights and application. Front Pharmacol 2023; 14:1306584. [PMID: 38027031 PMCID: PMC10657885 DOI: 10.3389/fphar.2023.1306584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune disease characterized by chronic inflammation and joint damage. The signaling lymphocytic activation molecule (SLAMF) family of receptors are expressed on various hematopoietic and non-hematopoietic cells and can regulate both immune cell activation and cytokine production. Altered expression of certain SLAMF receptors contributes to aberrant immune responses in RA. In RA, SLAMF1 is upregulated on T cells and may promote inflammation by participating in immune cell-mediated responses. SLAMF2 and SLAMF4 are involved in regulating monocyte tumor necrosis factor production and promoting inflammation. SLAMF7 activates multiple inflammatory pathways in macrophages to drive inflammatory gene expression. SLAMF8 inhibition can reduce inflammation in RA by blocking ERK/MMPs signaling. Of note, there are differences in SLAMF receptor (SFR) expression between normal and arthritic joint tissues, suggesting a role as potential diagnostic biomarkers. This review summarizes recent advances on the roles of SLAMF receptors 1, 2, 4, 7, and 8 in RA pathogenesis. However, further research is needed to elucidate the mechanisms of SLAMF regulation of immune cells in RA. Understanding interactions between SLAMF receptors and immune cells will help identify selective strategies for targeting SLAMF signaling without compromising normal immunity. Overall, the SLAMF gene family holds promise as a target for precision medicine in RA, but additional investigation of the underlying immunological mechanisms is needed. Targeting SLAMF receptors presents opportunities for new diagnostic and therapeutic approaches to dampen damaging immune-mediated inflammation in RA.
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Affiliation(s)
- Yixin Zheng
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Jianan Zhao
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Mi Zhou
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Kai Wei
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Ping Jiang
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Lingxia Xu
- Department of Rheumatology, Xiamen Hospital of Traditional Chinese Medicine, Xiamen, China
| | - Cen Chang
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Yu Shan
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Linshuai Xu
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Yiming Shi
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Steven J. Schrodi
- Center for Human Genomics and Precision Medicine, University of Wisconsin-Madison, Madison, WI, United States
- Department of Medical Genetics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States
| | - Shicheng Guo
- Center for Human Genomics and Precision Medicine, University of Wisconsin-Madison, Madison, WI, United States
- Department of Medical Genetics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States
| | - Dongyi He
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
- Arthritis Institute of Integrated Traditional and Western Medicine, Shanghai Chinese Medicine Research Institute, Shanghai, China
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5
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Abbaszadeh M, Karimi M, Rajaei S. The landscape of non-coding RNAs in the immunopathogenesis of Endometriosis. Front Immunol 2023; 14:1223828. [PMID: 37675122 PMCID: PMC10477370 DOI: 10.3389/fimmu.2023.1223828] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 08/02/2023] [Indexed: 09/08/2023] Open
Abstract
Endometriosis is a complex disorder that is characterized by the abnormal growth of endometrial-like tissue outside the uterus. It is associated with chronic inflammation, severe pelvic pain, infertility, and significantly reduced quality of life. Although the exact mechanism of endometriosis remains unknown, inflammation and altered immunity are considered key factors in the immunopathogenesis of the disorder. Disturbances of immune responses result in reduced clearance of regurgitated endometrial cells, which elicits oxidative stress and progression of inflammation. Proinflammatory mediators could affect immune cells' recruitment, fate, and function. Reciprocally, the activation of immune cells can promote inflammation. Aberrant expression of non-coding RNA (ncRNA) in patient and animal lesions could be suggestive of their role in endometriosis establishment. The engagement of these RNAs in regulating diverse biological processes, including inflammatory responses and activation of inflammasomes, altered immunity, cell proliferation, migration, invasion, and angiogenesis are widespread and far-reaching. Therefore, ncRNAs can be identified as a determining candidate regulating the inflammatory responses and immune system. This review aims in addition to predict the role of ncRNAs in the immunopathogenesis of endometriosis through regulating inflammation and altered immunity based on previous studies, it presents a comprehensive view of inflammation role in the pathogenesis of endometriosis.
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Affiliation(s)
| | | | - Samira Rajaei
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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6
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Wang CY, Wang CW, Chen CB, Chen WT, Chang YC, Hui RCY, Chung WH. Pharmacogenomics on the Treatment Response in Patients with Psoriasis: An Updated Review. Int J Mol Sci 2023; 24:ijms24087329. [PMID: 37108492 PMCID: PMC10138383 DOI: 10.3390/ijms24087329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 04/10/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
The efficacy and the safety of psoriasis medications have been proved in trials, but unideal responses and side effects are noted in clinical practice. Genetic predisposition is known to contribute to the pathogenesis of psoriasis. Hence, pharmacogenomics gives the hint of predictive treatment response individually. This review highlights the current pharmacogenetic and pharmacogenomic studies of medical therapy in psoriasis. HLA-Cw*06 status remains the most promising predictive treatment response in certain drugs. Numerous genetic variants (such as ABC transporter, DNMT3b, MTHFR, ANKLE1, IL-12B, IL-23R, MALT1, CDKAL1, IL17RA, IL1B, LY96, TLR2, etc.) are also found to be associated with treatment response for methotrexate, cyclosporin, acitretin, anti-TNF, anti-IL-12/23, anti-IL-17, anti-PDE4 agents, and topical therapy. Due to the high throughput sequencing technologies and the dramatic increase in sequencing cost, pharmacogenomic tests prior to treatment by whole exome sequencing or whole genome sequencing may be applied in clinical in the future. Further investigations are necessary to manifest potential genetic markers for psoriasis treatments.
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Affiliation(s)
- Ching-Ya Wang
- Department of Dermatology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Chuang-Wei Wang
- Department of Dermatology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
- Cancer Vaccine & Immune Cell Therapy Core Laboratory, Department of Medical Research, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
- Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan 333, Taiwan
- Department of Dermatology, Xiamen Chang Gung Hospital, Xiamen 361028, China
| | - Chun-Bing Chen
- Department of Dermatology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Cancer Vaccine & Immune Cell Therapy Core Laboratory, Department of Medical Research, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
- Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan 333, Taiwan
- Department of Dermatology, Xiamen Chang Gung Hospital, Xiamen 361028, China
- Immune-Oncology Center of Excellence, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung 204, Taiwan
| | - Wei-Ti Chen
- Department of Dermatology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Department of Dermatology, Xiamen Chang Gung Hospital, Xiamen 361028, China
| | - Ya-Ching Chang
- Department of Dermatology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Rosaline Chung-Yee Hui
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Department of Dermatology, Chang Gung Memorial Hospital, Keelung Branch, Keelung 204, Taiwan
| | - Wen-Hung Chung
- Department of Dermatology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Cancer Vaccine & Immune Cell Therapy Core Laboratory, Department of Medical Research, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
- Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan 333, Taiwan
- Department of Dermatology, Xiamen Chang Gung Hospital, Xiamen 361028, China
- Immune-Oncology Center of Excellence, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung 204, Taiwan
- Department of Dermatology, Chang Gung Memorial Hospital, Keelung Branch, Keelung 204, Taiwan
- Department of Dermatology, Beijing Tsinghua Chang Gung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 100190, China
- Department of Dermatology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
- Genomic Medicine Core Laboratory, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
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Wang Y, Li J, Zhang X, Liu M, Ji L, Yang T, Wang K, Song C, Wang P, Ye H, Shi J, Dai L. Autoantibody signatures discovered by HuProt protein microarray to enhance the diagnosis of lung cancer. Clin Immunol 2023; 246:109206. [PMID: 36528251 DOI: 10.1016/j.clim.2022.109206] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/27/2022] [Accepted: 11/28/2022] [Indexed: 12/23/2022]
Abstract
This study aims to discover novel autoantibodies against tumor-associated antigens (TAAs) and establish diagnostic models for assisting in the diagnosis of lung cancer and discrimination of pulmonary nodules (PNs). Ten autoantibodies to TAAbs (TAAbs) were discovered by means of protein microarray and their serum level was also higher in 212 LC patients than that in 212 NC of validation cohort 1 (P < 0.05). The model 1 comprising 4 TAAbs and CEA reached an AUC of 0.813 (95%CI: 0.762-0.864) for diagnosing LC from normal individuals. Five TAAbs existed a significant difference between 105 malignant pulmonary nodules (MPNs) and 105 benign pulmonary nodules (BPNs) patients in validation cohort 2 (P < 0.05). Model 2 could distinguish MPNs from BPNs with an AUC of 0.845. High-throughput protein microarray is an efficient approach in discovering novel TAAbs which could be used as biomarkers in lung cancer diagnosis.
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Affiliation(s)
- Yulin Wang
- Henan Institute of Medical and Pharmaceutical Sciences, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Jiaqi Li
- Henan Institute of Medical and Pharmaceutical Sciences, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, Henan, China; Henan Key Laboratory of Tumor Molecular Biomarkers, Zhengzhou University, Zhengzhou 450052, Henan, China; Henan Key Laboratory of Tumor Epidemiology & State Key Laboratory of Esophageal Cancer Prevention, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Xue Zhang
- Henan Institute of Medical and Pharmaceutical Sciences, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, Henan, China; Henan Key Laboratory of Tumor Molecular Biomarkers, Zhengzhou University, Zhengzhou 450052, Henan, China; Henan Key Laboratory of Tumor Epidemiology & State Key Laboratory of Esophageal Cancer Prevention, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Man Liu
- Henan Institute of Medical and Pharmaceutical Sciences, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, Henan, China; Henan Key Laboratory of Tumor Molecular Biomarkers, Zhengzhou University, Zhengzhou 450052, Henan, China; Henan Key Laboratory of Tumor Epidemiology & State Key Laboratory of Esophageal Cancer Prevention, Zhengzhou University, Zhengzhou 450052, Henan, China; Laboratory of Molecular Biology, Henan Luoyang Orthopedic Hospital (Henan Provincial Orthopedic Hospital), Zhengzhou, China
| | - Longtao Ji
- Henan Institute of Medical and Pharmaceutical Sciences, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, Henan, China; Henan Key Laboratory of Tumor Molecular Biomarkers, Zhengzhou University, Zhengzhou 450052, Henan, China; BGI College, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Ting Yang
- Henan Institute of Medical and Pharmaceutical Sciences, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, Henan, China; Henan Key Laboratory of Tumor Molecular Biomarkers, Zhengzhou University, Zhengzhou 450052, Henan, China; BGI College, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Kaijuan Wang
- Henan Key Laboratory of Tumor Epidemiology & State Key Laboratory of Esophageal Cancer Prevention, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Chunhua Song
- Henan Key Laboratory of Tumor Epidemiology & State Key Laboratory of Esophageal Cancer Prevention, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Peng Wang
- Henan Key Laboratory of Tumor Epidemiology & State Key Laboratory of Esophageal Cancer Prevention, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Hua Ye
- Henan Key Laboratory of Tumor Epidemiology & State Key Laboratory of Esophageal Cancer Prevention, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Jianxiang Shi
- Henan Institute of Medical and Pharmaceutical Sciences, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, Henan, China; Henan Key Laboratory of Tumor Molecular Biomarkers, Zhengzhou University, Zhengzhou 450052, Henan, China; Henan Key Laboratory of Tumor Epidemiology & State Key Laboratory of Esophageal Cancer Prevention, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Liping Dai
- Henan Institute of Medical and Pharmaceutical Sciences, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, Henan, China; Henan Key Laboratory of Tumor Molecular Biomarkers, Zhengzhou University, Zhengzhou 450052, Henan, China; Henan Key Laboratory of Tumor Epidemiology & State Key Laboratory of Esophageal Cancer Prevention, Zhengzhou University, Zhengzhou 450052, Henan, China; BGI College, Zhengzhou University, Zhengzhou 450052, Henan, China.
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8
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The survival and function of IL-10-producing regulatory B cells are negatively controlled by SLAMF5. Nat Commun 2021; 12:1893. [PMID: 33767202 PMCID: PMC7994628 DOI: 10.1038/s41467-021-22230-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 03/01/2021] [Indexed: 12/31/2022] Open
Abstract
B cells have essential functions in multiple sclerosis and in its mouse model, experimental autoimmune encephalomyelitis, both as drivers and suppressors of the disease. The suppressive effects are driven by a regulatory B cell (Breg) population that functions, primarily but not exclusively, via the production of IL-10. However, the mechanisms modulating IL-10-producing Breg abundance are poorly understood. Here we identify SLAMF5 for controlling IL-10+ Breg maintenance and function. In EAE, the deficiency of SLAMF5 in B cells causes accumulation of IL10+ Bregs in the central nervous system and periphery. Blocking SLAMF5 in vitro induces both human and mouse IL-10-producing Breg cells and increases their survival with a concomitant increase of a transcription factor, c-Maf. Finally, in vivo SLAMF5 blocking in EAE elevates IL-10+ Breg levels and ameliorates disease severity. Our results suggest that SLAMF5 is a negative moderator of IL-10+ Breg cells, and may serve as a therapeutic target in MS and other autoimmune diseases. Regulatory B (Breg) cells suppress excessive inflammation primary via the production of interleukin 10 (IL-10). Here the authors show that the function and homeostasis of mouse and human IL-10+ Breg cells are negatively regulated by the cell surface receptor, SLAMF5, to impact experimental autoimmunity, thereby hinting SLAMF5 as a potential target for immunotherapy.
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Lewinsky H, Gunes EG, David K, Radomir L, Kramer MP, Pellegrino B, Perpinial M, Chen J, He TF, Mansour AG, Teng KY, Bhattacharya S, Caserta E, Troadec E, Lee P, Feng M, Keats J, Krishnan A, Rosenzweig M, Yu J, Caligiuri MA, Cohen Y, Shevetz O, Becker-Herman S, Pichiorri F, Rosen S, Shachar I. CD84 is a regulator of the immunosuppressive microenvironment in multiple myeloma. JCI Insight 2021; 6:141683. [PMID: 33465053 PMCID: PMC7934939 DOI: 10.1172/jci.insight.141683] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 01/15/2021] [Indexed: 12/30/2022] Open
Abstract
Multiple myeloma (MM) is characterized by an accumulation of malignant plasma cells (PCs) within the BM. The BM microenvironment supports survival of the malignant cells and is composed of cellular fractions that foster myeloma development and progression by suppression of the immune response. Despite major progress in understanding the biology and pathophysiology of MM, this disease is still incurable and requires aggressive treatment with significant side effects. CD84 is a self-binding immunoreceptor belonging to the signaling lymphocyte activation molecule (SLAM) family. Previously, we showed that CD84 bridges between chronic lymphocytic leukemia cells and their microenvironment, and it regulates T cell function. In the current study, we investigated the role of CD84 in MM. Our results show that MM cells express low levels of CD84. However, these cells secrete the cytokine macrophage migration inhibitory factor (MIF), which induces CD84 expression on cells in their microenvironment. Its activation leads to an elevation of expression of genes regulating differentiation to monocytic/granulocytic-myeloid-derived suppressor cells (M-MDSCs and G-MDSCs, respectively) and upregulation of PD-L1 expression on MDSCs, which together suppress T cell function. Downregulation of CD84 or its blocking reduce MDSC accumulation, resulting in elevated T cell activity and reduced tumor load. Our data suggest that CD84 might serve as a novel therapeutic target in MM.
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Affiliation(s)
- Hadas Lewinsky
- Department of Immunology, Department of Biochemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Emine G. Gunes
- Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, California, USA
- Department of Hematologic Malignancies Translational Science and
| | - Keren David
- Department of Immunology, Department of Biochemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Lihi Radomir
- Department of Immunology, Department of Biochemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Matthias P. Kramer
- Department of Immunology, Department of Biochemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Bianca Pellegrino
- Department of Immunology, Department of Biochemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Michal Perpinial
- Department of Immunology, Department of Biochemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Jing Chen
- Department of Immuno-Oncology, Beckman Research Institute, City of Hope, Duarte, California, USA
| | - Ting-fang He
- Department of Immuno-Oncology, Beckman Research Institute, City of Hope, Duarte, California, USA
| | | | - Kun-Yu Teng
- Department of Hematologic Malignancies Translational Science and
| | - Supriyo Bhattacharya
- Translational Bioinformatics, Center for Informatics, Department of Computational and Quantitative Medicine, City of Hope, Duarte, California, USA
| | - Enrico Caserta
- Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, California, USA
- Department of Hematologic Malignancies Translational Science and
| | - Estelle Troadec
- Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, California, USA
- Department of Hematologic Malignancies Translational Science and
| | - Peter Lee
- Department of Immuno-Oncology, Beckman Research Institute, City of Hope, Duarte, California, USA
| | - Mingye Feng
- Department of Immuno-Oncology, Beckman Research Institute, City of Hope, Duarte, California, USA
| | - Jonathan Keats
- Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, California, USA
- Translational Genomics Research Institute, Phoenix, Arizona, USA
| | - Amrita Krishnan
- Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, California, USA
- Department of Hematologic Malignancies Translational Science and
| | - Michael Rosenzweig
- Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, California, USA
- Department of Hematologic Malignancies Translational Science and
| | - Jianhua Yu
- Department of Hematologic Malignancies Translational Science and
| | | | - Yosef Cohen
- Sanz Medical Center, Laniado Medical Center, Netanya, Israel
| | - Olga Shevetz
- Hematology Institute, Kaplan Medical Center, Rehovot, Israel
| | - Shirly Becker-Herman
- Department of Immunology, Department of Biochemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Flavia Pichiorri
- Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, California, USA
- Department of Hematologic Malignancies Translational Science and
| | - Steven Rosen
- Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, California, USA
- Department of Hematologic Malignancies Translational Science and
| | - Idit Shachar
- Department of Immunology, Department of Biochemistry, Weizmann Institute of Science, Rehovot, Israel
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10
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Figueiredo CR, Kalirai H, Sacco JJ, Azevedo RA, Duckworth A, Slupsky JR, Coulson JM, Coupland SE. Loss of BAP1 expression is associated with an immunosuppressive microenvironment in uveal melanoma, with implications for immunotherapy development. J Pathol 2020; 250:420-439. [PMID: 31960425 PMCID: PMC7216965 DOI: 10.1002/path.5384] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 12/28/2019] [Accepted: 01/14/2020] [Indexed: 12/22/2022]
Abstract
Immunotherapy using immune checkpoint inhibitors (ICIs) induces durable responses in many metastatic cancers. Metastatic uveal melanoma (mUM), typically occurring in the liver, is one of the most refractory tumours to ICIs and has dismal outcomes. Monosomy 3 (M3), polysomy 8q, and BAP1 loss in primary uveal melanoma (pUM) are associated with poor prognoses. The presence of tumour-infiltrating lymphocytes (TILs) within pUM and surrounding mUM - and some evidence of clinical responses to adoptive TIL transfer - strongly suggests that UMs are indeed immunogenic despite their low mutational burden. The mechanisms that suppress TILs in pUM and mUM are unknown. We show that BAP1 loss is correlated with upregulation of several genes associated with suppressive immune responses, some of which build an immune suppressive axis, including HLA-DR, CD38, and CD74. Further, single-cell analysis of pUM by mass cytometry confirmed the expression of these and other markers revealing important functions of infiltrating immune cells in UM, most being regulatory CD8+ T lymphocytes and tumour-associated macrophages (TAMs). Transcriptomic analysis of hepatic mUM revealed similar immune profiles to pUM with BAP1 loss, including the expression of IDO1. At the protein level, we observed TAMs and TILs entrapped within peritumoural fibrotic areas surrounding mUM, with increased expression of IDO1, PD-L1, and β-catenin (CTNNB1), suggesting tumour-driven immune exclusion and hence the immunotherapy resistance. These findings aid the understanding of how the immune response is organised in BAP1 - mUM, which will further enable functional validation of detected biomarkers and the development of focused immunotherapeutic approaches. © 2020 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Carlos R Figueiredo
- Department of Molecular and Clinical Cancer Medicine, ITMUniversity of LiverpoolLiverpoolUK
- Department of the Faculty of Medicine, MediCity Research Laboratory and Institute of BiomedicineUniversity of TurkuTurkuFinland
| | - Helen Kalirai
- Department of Molecular and Clinical Cancer Medicine, ITMUniversity of LiverpoolLiverpoolUK
| | - Joseph J Sacco
- Department of Molecular and Clinical Cancer Medicine, ITMUniversity of LiverpoolLiverpoolUK
- Department of Medical OncologyThe Clatterbridge Cancer CentreWirralUK
| | - Ricardo A Azevedo
- Department of Cancer BiologyThe University of Texas–MD Anderson Cancer CenterHoustonTXUSA
| | - Andrew Duckworth
- Department of Molecular and Clinical Cancer Medicine, ITMUniversity of LiverpoolLiverpoolUK
| | - Joseph R Slupsky
- Department of Molecular and Clinical Cancer Medicine, ITMUniversity of LiverpoolLiverpoolUK
| | - Judy M Coulson
- Department of Cellular and Molecular PhysiologyUniversity of LiverpoolLiverpoolUK
| | - Sarah E Coupland
- Department of Molecular and Clinical Cancer Medicine, ITMUniversity of LiverpoolLiverpoolUK
- Liverpool Clinical LaboratoriesRoyal Liverpool University HospitalLiverpoolUK
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11
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Chakravarty D, McElfresh GW, Kundrotas PJ, Vakser IA. How to choose templates for modeling of protein complexes: Insights from benchmarking template-based docking. Proteins 2020; 88:1070-1081. [PMID: 31994759 DOI: 10.1002/prot.25875] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 01/07/2020] [Accepted: 01/22/2020] [Indexed: 01/01/2023]
Abstract
Comparative docking is based on experimentally determined structures of protein-protein complexes (templates), following the paradigm that proteins with similar sequences and/or structures form similar complexes. Modeling utilizing structure similarity of target monomers to template complexes significantly expands structural coverage of the interactome. Template-based docking by structure alignment can be performed for the entire structures or by aligning targets to the bound interfaces of the experimentally determined complexes. Systematic benchmarking of docking protocols based on full and interface structure alignment showed that both protocols perform similarly, with top 1 docking success rate 26%. However, in terms of the models' quality, the interface-based docking performed marginally better. The interface-based docking is preferable when one would suspect a significant conformational change in the full protein structure upon binding, for example, a rearrangement of the domains in multidomain proteins. Importantly, if the same structure is selected as the top template by both full and interface alignment, the docking success rate increases 2-fold for both top 1 and top 10 predictions. Matching structural annotations of the target and template proteins for template detection, as a computationally less expensive alternative to structural alignment, did not improve the docking performance. Sophisticated remote sequence homology detection added templates to the pool of those identified by structure-based alignment, suggesting that for practical docking, the combination of the structure alignment protocols and the remote sequence homology detection may be useful in order to avoid potential flaws in generation of the structural templates library.
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Affiliation(s)
| | - G W McElfresh
- Computational Biology Program, The University of Kansas, Lawrence, Kansas
| | - Petras J Kundrotas
- Computational Biology Program, The University of Kansas, Lawrence, Kansas
| | - Ilya A Vakser
- Computational Biology Program, The University of Kansas, Lawrence, Kansas.,Department of Molecular Biosciences, The University of Kansas, Lawrence, Kansas
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12
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Maurer S, Kopp HG, Salih HR, Kropp KN. Modulation of Immune Responses by Platelet-Derived ADAM10. Front Immunol 2020; 11:44. [PMID: 32117229 PMCID: PMC7012935 DOI: 10.3389/fimmu.2020.00044] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 01/09/2020] [Indexed: 12/15/2022] Open
Abstract
Platelets have a crucial function in maintaining hemostasis. However, beyond their role in coagulation and thrombus formation, platelets have been implicated to affect various pathophysiological conditions such as infectious diseases, autoimmune disorders, and cancer. It is well-established that platelets aid local cancer growth by providing growth factors or contributing to cancer angiogenesis. In addition, they promote metastasis, among others by facilitation of tumor cell-extravasation and epithelial-to-mesenchymal-like transition as well as protecting metastasizing cancer cells from immunosurveillance. A variety of membrane-bound and soluble platelet-derived factors are involved in these processes, and many aspects of platelet biology in both health and disease are regulated by platelet-associated metalloproteinases and their inhibitors. Platelets synthesize (i) members of the matrix metalloproteinase (MMP) family and also inhibitors of MMPs such as members of the "tissue inhibitor of metalloproteinases" (TIMP) family as well as (ii) members of the "a disintegrin and metalloproteinase" (ADAM) family including ADAM10. Notably, platelet-associated metalloproteinase activity not only influences functions of platelets themselves: platelets can also induce expression and/or release of metalloproteinases e.g., in leukocytes or cancer cells, and ADAMs are emerging as important components by which platelets directly affect other cell types and function. This review outlines the function of metalloproteinases in platelet biology with a focus on ADAM10 and discusses the role of platelet-derived metalloproteinases in the interaction of platelets with components of the immune system and/or cancer cells.
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Affiliation(s)
- Stefanie Maurer
- Clinical Collaboration Unit Translational Immunology, German Cancer Consortium (DKTK), Department of Internal Medicine, University Hospital Tuebingen, Tuebingen, Germany.,DFG Cluster of Excellence 2180 'Image-guided and Functional Instructed Tumor Therapy' (IFIT), University of Tuebingen, Tubingen, Germany.,Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Hans-Georg Kopp
- Departments of Molecular Oncology and Thoracic Oncology, Robert-Bosch-Hospital Stuttgart, Stuttgart, Germany
| | - Helmut R Salih
- Clinical Collaboration Unit Translational Immunology, German Cancer Consortium (DKTK), Department of Internal Medicine, University Hospital Tuebingen, Tuebingen, Germany.,DFG Cluster of Excellence 2180 'Image-guided and Functional Instructed Tumor Therapy' (IFIT), University of Tuebingen, Tubingen, Germany
| | - Korbinian N Kropp
- Department of Hematology, Medical Oncology and Pneumology, University Medical Center of Mainz, Mainz, Germany
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13
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Barak AF, Lewinsky H, Perpinial M, Huber V, Radomir L, Kramer MP, Sever L, Wolf Y, Shapiro M, Herishanu Y, Jung S, Becker-Herman S, Shachar I. Bone marrow dendritic cells support the survival of chronic lymphocytic leukemia cells in a CD84 dependent manner. Oncogene 2019; 39:1997-2008. [PMID: 31772329 DOI: 10.1038/s41388-019-1121-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 11/11/2019] [Accepted: 11/13/2019] [Indexed: 11/09/2022]
Abstract
Chronic lymphocytic leukemia (CLL) is a malignancy of mature B lymphocytes. The microenvironment of the CLL cells is a vital element in the regulation of the survival of these malignant cells. CLL cell longevity is dependent on external signals, originating from cells in their microenvironment including secreted and surface-bound factors. Dendritic cells (DCs) play an important part in tumor microenvironment, but their role in the CLL bone marrow (BM) niche has not been studied. We show here that CLL cells induce accumulation of bone marrow dendritic cells (BMDCs). Depletion of this population attenuates disease expansion. Our results show that the support of the microenvironment is partly dependent on CD84, a cell surface molecule belonging to the Signaling Lymphocyte Activating Molecule (SLAM) family of immunoreceptors. Our results suggest a novel therapeutic strategy whereby eliminating BMDCs or blocking the CD84 expressed on these cells may reduce the tumor load.
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Affiliation(s)
- Avital F Barak
- Department of Immunology, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Hadas Lewinsky
- Department of Immunology, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Michal Perpinial
- Department of Immunology, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Victoria Huber
- Department of Immunology, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Lihi Radomir
- Department of Immunology, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Mattias P Kramer
- Department of Immunology, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Lital Sever
- Department of Immunology, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Yochai Wolf
- Department of Immunology, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Mika Shapiro
- Department of Hematology, Tel-Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Yair Herishanu
- Department of Hematology, Tel-Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Steffen Jung
- Department of Immunology, Weizmann Institute of Science, Rehovot, 76100, Israel
| | | | - Idit Shachar
- Department of Immunology, Weizmann Institute of Science, Rehovot, 76100, Israel.
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14
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Abstract
SLAMF9 belongs to the conserved lymphocytic activation molecule family (SLAMF). Unlike other SLAMs, which have been extensively studied, the role of SLAMF9 in the immune system remained mostly unexplored. By generating CRISPR/Cas9 SLAMF9 knockout mice, we analyzed the role of this receptor in plasmacytoid dendritic cells (pDCs), which preferentially express the SLAMF9 transcript and protein. These cells display a unique capacity to produce type I IFN and bridge between innate and adaptive immune response. Analysis of pDCs in SLAMF9-/- mice revealed an increase of immature pDCs in the bone marrow and enhanced accumulation of pDCs in the lymph nodes. In the periphery, SLAMF9 deficiency resulted in lower levels of the transcription factor SpiB, elevation of pDC survival, and attenuated IFN-α and TNF-α production. To define the role of SLAMF9 during inflammation, pDCs lacking SLAMF9 were followed during induced experimental autoimmune encephalomyelitis. SLAMF9-/- mice demonstrated attenuated disease and delayed onset, accompanied by a prominent increase of immature pDCs in the lymph node, with a reduced costimulatory potential and enhanced infiltration of pDCs into the central nervous system. These results suggest the crucial role of SLAMF9 in pDC differentiation, homeostasis, and function in the steady state and during experimental autoimmune encephalomyelitis.
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15
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BioTarget: A Computational Framework Identifying Cancer Type Specific Transcriptional Targets of Immune Response Pathways. Sci Rep 2019; 9:9029. [PMID: 31227749 PMCID: PMC6588588 DOI: 10.1038/s41598-019-45304-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 06/03/2019] [Indexed: 01/04/2023] Open
Abstract
Transcriptome data can provide information on signaling pathways active in cancers, but new computational tools are needed to more accurately quantify pathway activity and identify tissue-specific pathway features. We developed a computational method called “BioTarget” that incorporates ChIP-seq data into cellular pathway analysis. This tool relates the expression of transcription factor TF target genes (based on ChIP-seq data) with the status of upstream signaling components for an accurate quantification of pathway activity. This analysis also reveals TF targets expressed in specific contexts/tissues. We applied BioTarget to assess the activity of TBX21 and GATA3 pathways in cancers. TBX21 and GATA3 are TF regulators that control the differentiation of T cells into Th1 and Th2 helper cells that mediate cell-based and humoral immune responses, respectively. Since tumor immune responses can impact cancer progression, the significance of our pathway scores should be revealed by effective patient stratification. We found that low Th1/Th2 activity ratios were associated with a significantly poorer survival of stomach and breast cancer patients, whereas an unbalanced Th1/Th2 response was correlated with poorer survival of colon cancer patients. Lung adenocarcinoma and lung squamous cell carcinoma patients had the lowest survival rates when both Th1 and Th2 responses were high. Our method also identified context-specific target genes for TBX21 and GATA3. Applying the BioTarget tool to BCL6, a TF associated with germinal center lymphocytes, we observed that patients with an active BCL6 pathway had significantly improved survival for breast, colon, and stomach cancer. Our findings support the effectiveness of the BioTarget tool for transcriptome analysis and point to interesting associations between some immune-response pathways and cancer progression.
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16
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Lewinsky H, Barak AF, Huber V, Kramer MP, Radomir L, Sever L, Orr I, Mirkin V, Dezorella N, Shapiro M, Cohen Y, Shvidel L, Seiffert M, Herishanu Y, Becker-Herman S, Shachar I. CD84 regulates PD-1/PD-L1 expression and function in chronic lymphocytic leukemia. J Clin Invest 2018; 128:5465-5478. [PMID: 30277471 DOI: 10.1172/jci96610] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 09/26/2018] [Indexed: 12/21/2022] Open
Abstract
Chronic lymphocytic leukemia (CLL) is characterized by clonal proliferation and progressive accumulation of mature B lymphocytes in the peripheral blood, lymphoid tissues, and bone marrow. CLL is characterized by profound immune defects leading to severe infectious complications. T cells are numerically, phenotypically, and functionally highly abnormal in CLL, with only limited ability to exert antitumor immune responses. Exhaustion of T cells has also been suggested to play an important role in antitumor responses. CLL-mediated T cell exhaustion is achieved by the aberrant expression of several inhibitory molecules on CLL cells and their microenvironment, prominently the programmed cell death ligand 1/programmed cell death 1 (PD-L1/PD-1) receptors. Previously, we showed that CD84, a member of the SLAM family of receptors, bridges between CLL cells and their microenvironment. In the current study, we followed CD84 regulation of T cell function. We showed that cell-cell interaction mediated through human and mouse CD84 upregulates PD-L1 expression on CLL cells and in their microenvironment and PD-1 expression on T cells. This resulted in suppression of T cell responses and activity in vitro and in vivo. Thus, our results demonstrate a role for CD84 in the regulation of immune checkpoints by leukemia cells and identify CD84 blockade as a therapeutic strategy to reverse tumor-induced immune suppression.
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Affiliation(s)
| | | | | | | | | | | | - Irit Orr
- Life Sciences Core Facilities, Department of Biochemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Vita Mirkin
- Hematology Institute, Kaplan Medical Center, Rehovot, Israel
| | - Nili Dezorella
- Department of Hematology, Tel-Aviv Sourasky Medical Center and Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Mika Shapiro
- Department of Hematology, Tel-Aviv Sourasky Medical Center and Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Yosef Cohen
- Sanz Medical Center, Laniado Medical Center, Netanya, Israel
| | - Lev Shvidel
- Hematology Institute, Kaplan Medical Center, Rehovot, Israel
| | - Martina Seiffert
- Molecular Genetics, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Yair Herishanu
- Hematology Institute, Kaplan Medical Center, Rehovot, Israel
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17
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Cuenca M, Sintes J, Lányi Á, Engel P. CD84 cell surface signaling molecule: An emerging biomarker and target for cancer and autoimmune disorders. Clin Immunol 2018; 204:43-49. [PMID: 30522694 DOI: 10.1016/j.clim.2018.10.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 10/24/2018] [Accepted: 10/24/2018] [Indexed: 02/07/2023]
Abstract
CD84 (SLAMF5) is a member of the SLAM family of cell-surface immunoreceptors. Broadly expressed on most immune cell subsets, CD84 functions as a homophilic adhesion molecule, whose signaling can activate or inhibit leukocyte function depending on the cell type and its stage of activation or differentiation. CD84-mediated signaling regulates diverse immunological processes, including T cell cytokine secretion, natural killer cell cytotoxicity, monocyte activation, autophagy, cognate T:B interactions, and B cell tolerance at the germinal center checkpoint. Recently, alterations in CD84 have been related to autoimmune and lymphoproliferative disorders. Specific allelic variations in CD84 are associated with autoimmune diseases such as systemic lupus erythematosus and rheumatoid arthritis. In chronic lymphocytic leukemia, CD84 mediates intrinsic and stroma-induced survival of malignant cells. In this review, we describe our current understanding of the structure and function of CD84 and its potential role as a therapeutic target and biomarker in inflammatory autoimmune disorders and cancer.
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Affiliation(s)
- Marta Cuenca
- Immunology Unit, Department of Biomedical Sciences, Faculty of Medicine, University of Barcelona, Barcelona, Spain.
| | - Jordi Sintes
- Immunology Unit, Department of Biomedical Sciences, Faculty of Medicine, University of Barcelona, Barcelona, Spain
| | - Árpád Lányi
- Department of Immunology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Pablo Engel
- Immunology Unit, Department of Biomedical Sciences, Faculty of Medicine, University of Barcelona, Barcelona, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
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18
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Yigit B, Wang N, Herzog RW, Terhorst C. SLAMF6 in health and disease: Implications for therapeutic targeting. Clin Immunol 2018; 204:3-13. [PMID: 30366106 DOI: 10.1016/j.clim.2018.10.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 10/22/2018] [Accepted: 10/22/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Burcu Yigit
- Division of Immunology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Ninghai Wang
- Division of Immunology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Roland W Herzog
- Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Cox Terhorst
- Division of Immunology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
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19
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Abstract
CD4+ T follicular helper (TFH) cells support germinal center (GC) reactions promoting humoral immunity. Dendritic cell (DC) diversification into genetically distinct subsets allows for specialization in promoting responses against several types of pathogens. Whether any classical DC (cDC) subset is required for humoral immunity is unknown, however. We tested several genetic models that selectively ablate distinct DC subsets in mice for their impact on splenic GC reactions. We identified a requirement for Notch2-dependent cDC2s, but not Batf3-dependent cDC1s or Klf4-dependent cDC2s, in promoting TFH and GC B cell formation in response to sheep red blood cells and inactivated Listeria monocytogenes This effect was mediated independent of Il2ra and several Notch2-dependent genes expressed in cDC2s, including Stat4 and Havcr2 Notch2 signaling during cDC2 development also substantially reduced the efficiency of cDC2s for presentation of MHC class II-restricted antigens, limiting the strength of CD4 T cell activation. Together, these results demonstrate a nonredundant role for the Notch2-dependent cDC2 subset in supporting humoral immune responses.
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20
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Dragovich MA, Mor A. The SLAM family receptors: Potential therapeutic targets for inflammatory and autoimmune diseases. Autoimmun Rev 2018; 17:674-682. [PMID: 29729453 DOI: 10.1016/j.autrev.2018.01.018] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 01/18/2018] [Indexed: 12/20/2022]
Abstract
The signaling lymphocytic activation molecule (SLAM) family is comprised of nine distinct receptors (SLAMF1 through SLAMF9) that are expressed on hematopoietic cells. All of these receptors, with the exception of SLAMF4, are homotypic by nature as downstream signaling occurs when hematopoietic cells that express the same SLAM receptor interact. The SLAM family receptor function is largely controlled via SLAM associated protein (SAP) family adaptors. The SAP family adaptors consist of SAP, Ewing sarcoma associated transcript (EAT)-2, and EAT-2-related transducer (ERT). These adaptors associate with the cytoplasmic domain of the SLAM family receptors through phosphorylated tyrosines. Defects in SLAM family members and SAP adaptors have been implicated in causing immune deficiencies. This is exemplified in patients with X-linked lymphoproliferative (XLP) disease, where SAP undergoes a loss of function mutation. Furthermore, evidence has been accumulating that SLAM family members are potential targets for inflammatory and autoimmune diseases. This review will discuss the structure and function of the SLAM family receptors and SAP family adaptors, their role in immune regulation, and potential approaches to target this family of receptors therapeutically.
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Affiliation(s)
- Matthew A Dragovich
- Department of Medicine, Division of Rheumatology, NYU School of Medicine, New York, NY 10016, USA; Perlmutter Cancer Center, NYU School of Medicine, New York, NY 10016, USA
| | - Adam Mor
- Department of Medicine, Division of Rheumatology, NYU School of Medicine, New York, NY 10016, USA; Perlmutter Cancer Center, NYU School of Medicine, New York, NY 10016, USA.
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21
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A Prominent Role of the Human Cytomegalovirus UL8 Glycoprotein in Restraining Proinflammatory Cytokine Production by Myeloid Cells at Late Times during Infection. J Virol 2018; 92:JVI.02229-17. [PMID: 29467314 DOI: 10.1128/jvi.02229-17] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 02/14/2018] [Indexed: 01/21/2023] Open
Abstract
Human cytomegalovirus (HCMV) persistence in infected individuals relies on a plethora of mechanisms to efficiently reduce host immune responses. To that end, HCMV uses a variety of gene products, some of which have not been identified yet. Here we characterized the UL8 gene, which consists of two exons, sharing the first with the HCMV RL11 family member UL7 UL8 is a transmembrane protein with an N-terminal immunoglobulin (Ig)-like domain in common with UL7 but with an extended stalk and a distinctive cytoplasmic tail. The UL8 open reading frame gives rise to a heavily glycosylated protein predominantly expressed on the cell surface, from where it can be partially endocytosed and subsequently degraded. Infections with UL8-tagged viruses indicated that UL8 was synthesized with late-phase kinetics. By virtue of its highly conserved Ig-like domain, this viral protein interacted with a surface molecule present on activated neutrophils. Notably, when ectopically expressed in THP-1 myeloid cells, UL8 was able to significantly reduce the production of a variety of proinflammatory cytokines. Mutations in UL8 indicated that this functional effect was mediated by the cell surface expression of its Ig-like domain. To investigate the impact of the viral protein in the infection context, we engineered HCMVs lacking the UL8 gene and demonstrated that UL8 decreases the release of a large number of proinflammatory factors at late times after infection of THP-1 cells. Our data indicate that UL8 may exert an immunosuppressive role key for HCMV survival in the host.IMPORTANCE HCMV is a major pathogen that causes life-threatening diseases and disabilities in infected newborns and immunocompromised individuals. Containing one of the largest genomes among all reported human viruses, HCMV encodes an impressive repertoire of gene products. However, the functions of a large proportion of them still remain unknown, a fact that complicates the design of new therapeutic approaches to prevent or treat HCMV-associated diseases. In this report, we have conducted an extensive study of UL8, one of the previously uncharacterized HCMV open reading frames. We found that the UL8 protein is expressed at late times postinfection and utilized by HCMV to reduce the production of proinflammatory factors by infected myeloid cells. Thus, the work presented here points to a key role of UL8 as a novel HCMV immune modulator capable of restraining host antiviral defenses.
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Yang C, Hu G, Li Z, Wang Q, Wang X, Yuan C, Wang Z, Hong W, Lu W, Cao L, Chen J, Wang Y, Yu S, Zhou Y, Yi Z, Fang Y. Differential gene expression in patients with subsyndromal symptomatic depression and major depressive disorder. PLoS One 2017; 12:e0172692. [PMID: 28333931 PMCID: PMC5363801 DOI: 10.1371/journal.pone.0172692] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Accepted: 02/08/2017] [Indexed: 12/03/2022] Open
Abstract
Background Subsyndromal symptomatic depression (SSD) is a subtype of subthreshold depressive and can lead to significant psychosocial functional impairment. Although the pathogenesis of major depressive disorder (MDD) and SSD still remains poorly understood, a set of studies have found that many same genetic factors play important roles in the etiology of these two disorders. Nowadays, the differential gene expression between MDD and SSD is still unknown. In our previous study, we compared the expression profile and made the classification with the leukocytes by using whole-genome cRNA microarrays among drug-free first-episode subjects with SSD, MDD and matched healthy controls (8 subjects in each group), and finally determined 48 gene expression signatures. Based on these findings, we further clarify whether these genes mRNA was different expressed in peripheral blood in patients with SSD, MDD and healthy controls (60 subjects respectively) Method With the help of the quantitative real-time reverse transcription-polymerase chain reaction (RT-qPCR), we gained gene relative expression levels among the three groups. Results We found that there are three of the forty eight co-regulated genes had differential expression in peripheral blood among the three groups, which are CD84, STRN, CTNS gene (F = 3.528, p = 0.034; F = 3.382, p = 0.039; F = 3.801, p = 0.026, respectively) while there were no significant differences for other genes. Conclusion CD84, STRN, CTNS gene may have significant value for performing diagnostic functions and classifying SSD, MDD and healthy controls.
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Affiliation(s)
- Chengqing Yang
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guoqin Hu
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zezhi Li
- Department of Neurology, Shanghai Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qingzhong Wang
- Department of Genetics, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xuemei Wang
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chengmei Yuan
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zuowei Wang
- Department of Psychiatry, Hongkou district mental health center, Shanghai, China
| | - Wu Hong
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weihong Lu
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lan Cao
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun Chen
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yong Wang
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shunying Yu
- Department of Genetics, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yimin Zhou
- Neurobiology Section, University of California, San Diego, CA, United States of America
| | - Zhenghui Yi
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- * E-mail: (YRF); (ZHY)
| | - Yiru Fang
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- * E-mail: (YRF); (ZHY)
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Yap EH, Fiser A. ProtLID, a Residue-Based Pharmacophore Approach to Identify Cognate Protein Ligands in the Immunoglobulin Superfamily. Structure 2016; 24:2217-2226. [PMID: 27889206 PMCID: PMC5444293 DOI: 10.1016/j.str.2016.10.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 07/26/2016] [Accepted: 10/25/2016] [Indexed: 10/20/2022]
Abstract
Members of the extracellular immunoglobulin superfamily (IgSF) play a key role in immune regulation through the control of the co-stimulatory pathway, and have emerged as potent drug targets in cancers, infectious diseases, and autoimmunity. Despite the difficult experimental access to this class of proteins, single structures of ectodomains of IgSF proteins are solved with regularity. However, the most biologically critical challenge for this class of proteins is the identification of their cognate ligands that communicate intercellular signals. We describe a conceptually novel method, protein-ligand interface design (ProtLID), to identify cognate ligands from a subproteome for a given target receptor protein. ProtLID designs an optimal protein interface for a given receptor by running extensive molecular dynamics simulations of single-residue probes. The type and location of residue preferences establish a residue-based pharmacophore, which is subsequently used to find potential matches among candidate ligands within a subproteome.
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Affiliation(s)
- Eng-Hui Yap
- Department of Systems and Computational Biology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA; Department of Biochemistry, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Andras Fiser
- Department of Systems and Computational Biology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA; Department of Biochemistry, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA.
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Kumar N, Barua S, Thachamvally R, Tripathi BN. Systems Perspective of Morbillivirus Replication. J Mol Microbiol Biotechnol 2016; 26:389-400. [DOI: 10.1159/000448842] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 08/02/2016] [Indexed: 11/19/2022] Open
Abstract
Systems biology refers to system-wide changes in biological components such as RNA/DNA (genomics), protein (proteomics) and lipids (lipidomics). In this review, we provide comprehensive information about morbillivirus replication. Besides discussing the role of individual viral/host proteins in virus replication, we also discuss how systems-level analyses could improve our understanding of morbillivirus replication, host-pathogen interaction, immune response and disease resistance. Finally, we discuss how viroinformatics is likely to provide important insights for understanding genome-genome, genome-protein and protein-protein interactions.
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25
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CD84 mediates CLL-microenvironment interactions. Oncogene 2016; 36:628-638. [PMID: 27452524 DOI: 10.1038/onc.2016.238] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 05/04/2016] [Accepted: 06/01/2016] [Indexed: 12/21/2022]
Abstract
Chronic lymphocytic leukemia (CLL) is a malignant disease of small mature lymphocytes. Signals from the CLL microenvironment promote progression of the disease and induce drug resistance. This phenomenon is largely dependent on direct contact between the malignant B cells and stromal cells. CD84 belongs to the signaling lymphocyte activation molecule family of immunoreceptors, which self-associates, forming an orthogonal homophilic dimer. We therefore hypothesized that CD84 may bridge between CLL cells and their microenvironment, promoting cell survival. Our in vitro results show that CD84 expressed on CLL cells interact with CD84 expressed on cells in their microenvironment, inducing cell survival in both sides. Blocking CD84 in vitro and in vivo disrupt the interaction of CLL cells with their microenvironment, resulting in induced cell death. Thus, our findings suggest novel therapeutic strategies based on the blockade of this CD84-dependent survival pathway.
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26
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van Driel BJ, Liao G, Engel P, Terhorst C. Responses to Microbial Challenges by SLAMF Receptors. Front Immunol 2016; 7:4. [PMID: 26834746 PMCID: PMC4718992 DOI: 10.3389/fimmu.2016.00004] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 01/06/2016] [Indexed: 12/24/2022] Open
Abstract
The SLAMF family (SLAMF) of cell surface glycoproteins is comprised of nine glycoproteins and while SLAMF1, 3, 5, 6, 7, 8, and 9 are self-ligand receptors, SLAMF2 and SLAMF4 interact with each other. Their interactions induce signal transduction networks in trans, thereby shaping immune cell-cell communications. Collectively, these receptors modulate a wide range of functions, such as myeloid cell and lymphocyte development, and T and B cell responses to microbes and parasites. In addition, several SLAMF receptors serve as microbial sensors, which either positively or negatively modulate the function of macrophages, dendritic cells, neutrophils, and NK cells in response to microbial challenges. The SLAMF receptor-microbe interactions contribute both to intracellular microbicidal activity as well as to migration of phagocytes to the site of inflammation. In this review, we describe the current knowledge on how the SLAMF receptors and their specific adapters SLAM-associated protein and EAT-2 regulate innate and adaptive immune responses to microbes.
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Affiliation(s)
- Boaz Job van Driel
- Division of Immunology, Beth Israel Deaconess Medical Center, Harvard Medical School , Boston, MA , USA
| | - Gongxian Liao
- Division of Immunology, Beth Israel Deaconess Medical Center, Harvard Medical School , Boston, MA , USA
| | - Pablo Engel
- Immunology Unit, Department of Cell Biology, Immunology and Neurosciences, Medical School, University of Barcelona , Barcelona , Spain
| | - Cox Terhorst
- Division of Immunology, Beth Israel Deaconess Medical Center, Harvard Medical School , Boston, MA , USA
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27
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McArdel SL, Terhorst C, Sharpe AH. Roles of CD48 in regulating immunity and tolerance. Clin Immunol 2016; 164:10-20. [PMID: 26794910 DOI: 10.1016/j.clim.2016.01.008] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Revised: 01/14/2016] [Accepted: 01/16/2016] [Indexed: 12/15/2022]
Abstract
CD48, a member of the signaling lymphocyte activation molecule family, participates in adhesion and activation of immune cells. Although constitutively expressed on most hematopoietic cells, CD48 is upregulated on subsets of activated cells. CD48 can have activating roles on T cells, antigen presenting cells and granulocytes, by binding to CD2 or bacterial FimH, and through cell intrinsic effects. Interactions between CD48 and its high affinity ligand CD244 are more complex, with both stimulatory and inhibitory outcomes. CD244:CD48 interactions regulate target cell lysis by NK cells and CTLs, which are important for viral clearance and regulation of effector/memory T cell generation and survival. Here we review roles of CD48 in infection, tolerance, autoimmunity, and allergy, as well as the tools used to investigate this receptor. We discuss stimulatory and regulatory roles for CD48, its potential as a therapeutic target in human disease, and current challenges to investigation of this immunoregulatory receptor.
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Affiliation(s)
- Shannon L McArdel
- Department of Microbiology and Immunobiology, Evergrande Center for Immunologic Diseases, Harvard Medical School, Boston, MA, USA
| | - Cox Terhorst
- Division of Immunology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Arlene H Sharpe
- Department of Microbiology and Immunobiology, Evergrande Center for Immunologic Diseases, Harvard Medical School, Boston, MA, USA.
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28
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Zhu Y, Zou L, Liu YC. T follicular helper cells, T follicular regulatory cells and autoimmunity. Int Immunol 2015; 28:173-9. [PMID: 26714592 DOI: 10.1093/intimm/dxv079] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Accepted: 12/11/2015] [Indexed: 12/24/2022] Open
Abstract
CD4(+)T follicular helper (Tfh) cells are recognized as a distinct T-cell subset, which provides help for germinal center (GC) formation, B-cell development and affinity maturation, and immunoglobulin class switching, as an indispensable part of adaptive immunity. Tfh cell differentiation depends on various factors including cell-surface molecule interactions, extracellular cytokines and multiple transcription factors, with B-cell lymphoma 6 (Bcl-6) being the master regulator. T follicular regulatory (Tfr) cells are also located in the GC and share phenotypic characteristics with Tfh cells and regulatory T cells, but function as negative regulators of GC responses. Dysregulation of either Tfh or Tfr cells is linked to the pathogenesis of autoimmune diseases such as systemic lupus erythematosus. This review covers the basic Tfh and Tfr biology including their differentiation and function, and their close relationship with autoimmune diseases.
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Affiliation(s)
- Yangyang Zhu
- Institute for Immunology, Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing 100084, China
| | - Le Zou
- Institute for Immunology, Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing 100084, China
| | - Yun-Cai Liu
- Institute for Immunology, Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing 100084, China Division of Cell Biology, La Jolla Institute for Allergy and Immunology, 9420 Athena Circle Dr., La Jolla, CA 92130, USA
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29
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Hua J, Davis SP, Hill JA, Yamagata T. Diverse Gene Expression in Human Regulatory T Cell Subsets Uncovers Connection between Regulatory T Cell Genes and Suppressive Function. THE JOURNAL OF IMMUNOLOGY 2015; 195:3642-53. [PMID: 26371251 DOI: 10.4049/jimmunol.1500349] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 08/16/2015] [Indexed: 12/19/2022]
Abstract
Regulatory T (Treg) cells have a critical role in the control of immunity, and their diverse subpopulations may allow adaptation to different types of immune responses. In this study, we analyzed human Treg cell subpopulations in the peripheral blood by performing genome-wide expression profiling of 40 Treg cell subsets from healthy donors. We found that the human peripheral blood Treg cell population is comprised of five major genomic subgroups, represented by 16 tractable subsets with a particular cell surface phenotype. These subsets possess a range of suppressive function and cytokine secretion and can exert a genomic footprint on target effector T (Teff) cells. Correlation analysis of variability in gene expression in the subsets identified several cell surface molecules associated with Treg suppressive function, and pharmacological interrogation revealed a set of genes having causative effect. The five genomic subgroups of Treg cells imposed a preserved pattern of gene expression on Teff cells, with a varying degree of genes being suppressed or induced. Notably, there was a cluster of genes induced by Treg cells that bolstered an autoinhibitory effect in Teff cells, and this induction appears to be governed by a different set of genes than ones involved in counteracting Teff activation. Our work shows an example of exploiting the diversity within human Treg cell subpopulations to dissect Treg cell biology.
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Affiliation(s)
- Jing Hua
- Tempero Discovery Performance Unit, Immuno-Inflammation Therapy Area, GlaxoSmithKline Research and Development, Cambridge, MA 02139
| | - Scott P Davis
- Tempero Discovery Performance Unit, Immuno-Inflammation Therapy Area, GlaxoSmithKline Research and Development, Cambridge, MA 02139
| | - Jonathan A Hill
- Tempero Discovery Performance Unit, Immuno-Inflammation Therapy Area, GlaxoSmithKline Research and Development, Cambridge, MA 02139
| | - Tetsuya Yamagata
- Tempero Discovery Performance Unit, Immuno-Inflammation Therapy Area, GlaxoSmithKline Research and Development, Cambridge, MA 02139
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30
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Capdevila-Nortes X, Jeworutzki E, Elorza-Vidal X, Barrallo-Gimeno A, Pusch M, Estévez R. Structural determinants of interaction, trafficking and function in the ClC-2/MLC1 subunit GlialCAM involved in leukodystrophy. J Physiol 2015; 593:4165-80. [PMID: 26033718 DOI: 10.1113/jp270467] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 05/22/2015] [Indexed: 02/03/2023] Open
Abstract
KEY POINTS The extracellular domain of GlialCAM is necessary for its targeting to cell junctions, as well as for interactions with itself and MLC1 and ClC-2. The C-terminus of GlialCAM is not necessary for interaction but is required for targeting to cell junctions. The first three residues of the transmembrane segment of GlialCAM are required for GlialCAM-mediated ClC-2 activation. ABSTRACT Mutations in the genes encoding the astrocytic protein MLC1, the cell adhesion molecule GlialCAM or the Cl(-) channel ClC-2 underlie human leukodystrophies. GlialCAM binds to itself, to MLC1 and to ClC-2, and directs these proteins to cell-cell contacts. In addition, GlialCAM dramatically activates ClC-2 mediated currents. In the present study, we used mutagenesis studies combined with functional and biochemical analyses to determine which parts of GlialCAM are required to perform these cellular functions. We found that the extracellular domain of GlialCAM is necessary for cell junction targeting and for mediating interactions with itself or with MLC1 and ClC-2. The C-terminus is also necessary for proper targeting to cell-cell junctions but is not required for the biochemical interaction. Finally, we identified the first three amino acids of the transmembrane segment of GlialCAM as being essential for the activation of ClC-2 currents but not for targeting or biochemical interaction. Our results provide new mechanistic insights concerning the regulation of the cell biology and function of MLC1 and ClC-2 by GlialCAM.
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Affiliation(s)
- Xavier Capdevila-Nortes
- Sección de Fisiología, Departamento de Ciencias Fisiológicas II, Universidad de Barcelona, Barcelona, Spain
| | - Elena Jeworutzki
- Istituto di Biofisica, CNR, Genoa, Italy.,Present address IfGH-Myocellular Electrophysiology, Department of Cardiovascular Medicine, University Hospital of Münster, Münster, Germany
| | - Xabier Elorza-Vidal
- Sección de Fisiología, Departamento de Ciencias Fisiológicas II, Universidad de Barcelona, Barcelona, Spain.,U-750, Centro de investigación en red de enfermedades raras (CIBERER), ISCIII, Barcelona, Spain
| | - Alejandro Barrallo-Gimeno
- Sección de Fisiología, Departamento de Ciencias Fisiológicas II, Universidad de Barcelona, Barcelona, Spain
| | | | - Raúl Estévez
- Sección de Fisiología, Departamento de Ciencias Fisiológicas II, Universidad de Barcelona, Barcelona, Spain.,U-750, Centro de investigación en red de enfermedades raras (CIBERER), ISCIII, Barcelona, Spain
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31
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Chu C, Wang Y, Zhang X, Ni X, Cao J, Xu W, Dong Z, Yuan P, Wei W, Ma Y, Zhang L, Wu L, Qi H. SAP-regulated T Cell-APC adhesion and ligation-dependent and -independent Ly108-CD3ζ interactions. THE JOURNAL OF IMMUNOLOGY 2014; 193:3860-71. [PMID: 25217164 DOI: 10.4049/jimmunol.1401660] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The germinal center response requires cooperation between Ag-specific T and B lymphocytes, which takes the form of long-lasting cell-cell conjugation in vivo. Signaling lymphocytic activation molecule (SLAM)-associated protein (SAP) is required for stable cognate T-B cell conjugation, whereas SLAM family transmembrane (TM) receptor Ly108 may negatively regulate this process. We show that, other than phosphotyrosine-binding, SAP does not harbor motifs that recruit additional signaling intermediates to stabilize T-B adhesion. Ly108 dampens T cell adhesion to not only Ag-presenting B cells, but also dendritic cells by inhibiting CD3ζ phosphorylation through two levels of regulated Ly108-CD3ζ interactions. Constitutively associated with Src homology 2 domain-containing tyrosine phosphatase-1 even in SAP-competent cells, Ly108 is codistributed with the CD3 complex within a length scale of 100-200 nm on quiescent cells and can reduce CD3ζ phosphorylation in the absence of overt TCR stimulation or Ly108 ligation. When Ly108 is engaged in trans during cell-cell interactions, Ly108-CD3ζ interactions are promoted in a manner that uniquely depends on Ly108 TM domain, leading to more efficient CD3ζ dephosphorylation. Whereas replacement of the Ly108 TM domain still allows the constitutive, colocalization-dependent inhibition of CD3ζ phosphorylation, it abrogates the ligation-dependent Ly108-CD3ζ interactions and CD3ζ dephosphorylation, and it abolishes the suppression on Ag-triggered T-B adhesion. These results offer new insights into how SAP and Ly108 antagonistically modulate the strength of proximal TCR signaling and thereby control cognate T cell-APC interactions.
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Affiliation(s)
- Coco Chu
- Tsinghua-Peking Center for Life Sciences, Laboratory of Dynamic Immunobiology, School of Medicine, Tsinghua University, Beijing 100084, People's Republic of China
| | - Yifeng Wang
- Tsinghua-Peking Center for Life Sciences, Laboratory of Dynamic Immunobiology, School of Medicine, Tsinghua University, Beijing 100084, People's Republic of China
| | - Xu Zhang
- Tsinghua-Peking Center for Life Sciences, Laboratory of Dynamic Immunobiology, School of Medicine, Tsinghua University, Beijing 100084, People's Republic of China
| | - Xinya Ni
- Tsinghua-Peking Center for Life Sciences, Laboratory of Dynamic Immunobiology, School of Medicine, Tsinghua University, Beijing 100084, People's Republic of China
| | - Junxia Cao
- Tsinghua-Peking Center for Life Sciences, Laboratory of Dynamic Immunobiology, School of Medicine, Tsinghua University, Beijing 100084, People's Republic of China
| | - Wan Xu
- Tsinghua-Peking Center for Life Sciences, Laboratory of Dynamic Immunobiology, School of Medicine, Tsinghua University, Beijing 100084, People's Republic of China
| | - Zhongjun Dong
- Laboratory of Tumor Immunology, School of Medicine, Tsinghua University, Beijing 100084, People's Republic of China
| | - Pengfei Yuan
- State Key Laboratory of Protein and Plant Gene Research, College of Life Sciences, Peking University, Beijing 100871, People's Republic of China; and
| | - Wensheng Wei
- State Key Laboratory of Protein and Plant Gene Research, College of Life Sciences, Peking University, Beijing 100871, People's Republic of China; and
| | - Yuanwu Ma
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medical Center, Peking Union Medical College, Beijing 100021, People's Republic of China
| | - Lianfeng Zhang
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medical Center, Peking Union Medical College, Beijing 100021, People's Republic of China
| | - Longyan Wu
- Tsinghua-Peking Center for Life Sciences, Laboratory of Dynamic Immunobiology, School of Medicine, Tsinghua University, Beijing 100084, People's Republic of China
| | - Hai Qi
- Tsinghua-Peking Center for Life Sciences, Laboratory of Dynamic Immunobiology, School of Medicine, Tsinghua University, Beijing 100084, People's Republic of China;
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Reindel R, Bischof J, Kim KYA, Orenstein JM, Soares MB, Baker SC, Shulman ST, Perlman EJ, Lingen MW, Pink AJ, Trevenen C, Rowley AH. CD84 is markedly up-regulated in Kawasaki disease arteriopathy. Clin Exp Immunol 2014; 177:203-11. [PMID: 24635044 DOI: 10.1111/cei.12327] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2014] [Indexed: 11/28/2022] Open
Abstract
The major goals of Kawasaki disease (KD) therapy are to reduce inflammation and prevent thrombosis in the coronary arteries (CA), but some children do not respond to currently available non-specific therapies. New treatments have been difficult to develop because the molecular pathogenesis is unknown. In order to identify dysregulated gene expression in KD CA, we performed high-throughput RNA sequencing on KD and control CA, validated potentially dysregulated genes by real-time reverse transcription-polymerase chain reaction (RT-PCR) and localized protein expression by immunohistochemistry. Signalling lymphocyte activation molecule CD84 was up-regulated 16-fold (P < 0·01) in acute KD CA (within 2 months of onset) and 32-fold (P < 0·01) in chronic CA (5 months to years after onset). CD84 was localized to inflammatory cells in KD tissues. Genes associated with cellular proliferation, motility and survival were also up-regulated in KD CA, and immune activation molecules MX2 and SP140 were up-regulated in chronic KD. CD84, which facilitates immune responses and stabilizes platelet aggregates, is markedly up-regulated in KD CA in patients with acute and chronic arterial disease. We provide the first molecular evidence of dysregulated inflammatory responses persisting for months to years in CA significantly damaged by KD.
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Affiliation(s)
- R Reindel
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, USA
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Almo SC, Guha C. Considerations for combined immune checkpoint modulation and radiation treatment. Radiat Res 2014; 182:230-8. [PMID: 25003312 DOI: 10.1667/rr13667.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Recent advances indicate that new therapeutic strategies for the treatment of malignancies will be realized from combined radiation treatment and immune checkpoint modulation. Numerous biophysical properties must be considered for effective biologic development, including affinity, selectivity, oligomeric state and valency. High-resolution structural characterization contributes to our understanding of these properties and can lead to the realization of proteins with unique in vitro activities and novel in vivo therapeutic functions. In this article we focus on the importance of these factors for new potential biologics and consider these in the context of combination therapies with physical modalities, including radiation therapy. In particular, we examine the consequences of altered avidities and subset-specific ligand density on the rational modification of biological function in the immunoglobulin and tumor necrosis factor superfamilies and for new optimized combination therapies.
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Affiliation(s)
- Steven C Almo
- a Department of Biochemistry, Albert Einstein College of Medicine, Bronx, New York 10461
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Orentas RJ, Nordlund J, He J, Sindiri S, Mackall C, Fry TJ, Khan J. Bioinformatic description of immunotherapy targets for pediatric T-cell leukemia and the impact of normal gene sets used for comparison. Front Oncol 2014; 4:134. [PMID: 24959420 PMCID: PMC4050364 DOI: 10.3389/fonc.2014.00134] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2014] [Accepted: 05/21/2014] [Indexed: 11/13/2022] Open
Abstract
Pediatric lymphoid leukemia has the highest cure rate of all pediatric malignancies, yet due to its prevalence, still accounts for the majority of childhood cancer deaths and requires long-term highly toxic therapy. The ability to target B-cell ALL with immunoglobulin-like binders, whether anti-CD22 antibody or anti-CD19 CAR-Ts, has impacted treatment options for some patients. The development of new ways to target B-cell antigens continues at rapid pace. T-cell ALL accounts for up to 20% of childhood leukemia but has yet to see a set of high-value immunotherapeutic targets identified. To find new targets for T-ALL immunotherapy, we employed a bioinformatic comparison to broad normal tissue arrays, hematopoietic stem cells (HSC), and mature lymphocytes, then filtered the results for transcripts encoding plasma membrane proteins. T-ALL bears a core T-cell signature and transcripts encoding TCR/CD3 components and canonical markers of T-cell development predominate, especially when comparison was made to normal tissue or HSC. However, when comparison to mature lymphocytes was also undertaken, we identified two antigens that may drive, or be associated with leukemogenesis; TALLA-1 and hedgehog interacting protein. In addition, TCR subfamilies, CD1, activation and adhesion markers, membrane-organizing molecules, and receptors linked to metabolism and inflammation were also identified. Of these, only CD52, CD37, and CD98 are currently being targeted clinically. This work provides a set of targets to be considered for future development of immunotherapies for T-ALL.
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Affiliation(s)
- Rimas J Orentas
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda, MD , USA
| | - Jessica Nordlund
- Molecular Medicine, Department of Medical Sciences and Science for Life Laboratory, Uppsala University , Uppsala , Sweden
| | - Jianbin He
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda, MD , USA
| | - Sivasish Sindiri
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda, MD , USA
| | - Crystal Mackall
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda, MD , USA
| | - Terry J Fry
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda, MD , USA
| | - Javed Khan
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda, MD , USA
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35
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Detre C, Yigit B, Keszei M, Castro W, Magelky EM, Terhorst C. SAP modulates B cell functions in a genetic background-dependent manner. Immunol Lett 2013; 153:15-21. [PMID: 23806511 DOI: 10.1016/j.imlet.2013.06.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 06/13/2013] [Indexed: 10/26/2022]
Abstract
Mutations affecting the SLAM-associated protein (SAP) are responsible for the X-linked lympho-proliferative syndrome (XLP), a severe primary immunodeficiency syndrome with disease manifestations that include fatal mononucleosis, B cell lymphoma and dysgammaglobulinemia. It is well accepted that insufficient help by SAP-/- CD4+ T cells, in particular during the germinal center reaction, is a component of dysgammaglobulinemia in XLP patients and SAP-/- animals. It is however not well understood whether in XLP patients and SAP-/- mice B cell functions are affected, even though B cells themselves do not express SAP. Here we report that B cell intrinsic responses to haptenated protein antigens are impaired in SAP-/- mice and in Rag-/- mice into which B cells derived from SAP-/- mice together with wt CD4+ T cells had been transferred. This impaired B cells functions are in part depending on the genetic background of the SAP-/- mouse, which affects B cell homeostasis. Surprisingly, stimulation with an agonistic anti-CD40 causes strong in vivo and in vitro B cell responses in SAP-/- mice. Taken together, the data demonstrate that genetic factors play an important role in the SAP-related B cell functions. The finding that anti-CD40 can in part restore impaired B cell responses in SAP-/- mice, suggests potentially novel therapeutic interventions in subsets of XLP patients.
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Affiliation(s)
- Cynthia Detre
- Division of Immunology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
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36
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Binsky-Ehrenreich I, Marom A, Sobotta MC, Shvidel L, Berrebi A, Hazan-Halevy I, Kay S, Aloshin A, Sagi I, Goldenberg DM, Leng L, Bucala R, Herishanu Y, Haran M, Shachar I. CD84 is a survival receptor for CLL cells. Oncogene 2013; 33:1006-16. [PMID: 23435417 DOI: 10.1038/onc.2013.31] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 01/02/2013] [Accepted: 01/02/2013] [Indexed: 12/29/2022]
Abstract
Chronic lymphocytic leukemia (CLL) is characterized by the accumulation of CD5+ B lymphocytes in peripheral blood, lymphoid organs and bone marrow. The main feature of the disease is accumulation of the malignant cells due to decreased apoptosis. CD84 belongs to the signaling lymphocyte activating molecule family of immunoreceptors, and has an unknown function in CLL cells. Here, we show that the expression of CD84 is significantly elevated from the early stages of the disease, and is regulated by macrophage migration inhibitory factor and its receptor, CD74. Activation of cell surface CD84 initiates a signaling cascade that enhances CLL cell survival. Both downmodulation of CD84 expression and its immune-mediated blockade induce cell death in vitro and in vivo. In addition, analysis of samples derived from an on-going clinical trial, in which human subjects were treated with humanized anti-CD74 (milatuzumab), shows a decrease in CD84 messenger RNA and protein levels in milatuzumab-treated cells. This downregulation was correlated with reduction of Bcl-2 and Mcl-1 expression. Thus, our data show that overexpression of CD84 in CLL is an important survival mechanism that appears to be an early event in the pathogenesis of the disease. These findings suggest novel therapeutic strategies based on the blockade of this CD84-dependent survival pathway.
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Affiliation(s)
| | - A Marom
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - M C Sobotta
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - L Shvidel
- Hematology Institute, Kaplan Medical Center, Rehovot, Israel
| | - A Berrebi
- Hematology Institute, Kaplan Medical Center, Rehovot, Israel
| | - I Hazan-Halevy
- Department of Hematology, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel
| | - S Kay
- Department of Hematology, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel
| | - A Aloshin
- Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - I Sagi
- Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - D M Goldenberg
- Garden State Cancer Center, Center for Molecular Medicine and Immunology, Morris Plains, NJ, USA
| | - L Leng
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - R Bucala
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Y Herishanu
- Department of Hematology, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel
| | - M Haran
- Hematology Institute, Kaplan Medical Center, Rehovot, Israel
| | - I Shachar
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
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37
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Kageyama R, Cannons JL, Zhao F, Yusuf I, Lao C, Locci M, Schwartzberg PL, Crotty S. The receptor Ly108 functions as a SAP adaptor-dependent on-off switch for T cell help to B cells and NKT cell development. Immunity 2012; 36:986-1002. [PMID: 22683125 DOI: 10.1016/j.immuni.2012.05.016] [Citation(s) in RCA: 124] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Revised: 04/17/2012] [Accepted: 05/08/2012] [Indexed: 01/01/2023]
Abstract
Humans and mice deficient in the adaptor protein SAP (Sh2d1a) have a major defect in humoral immunity, resulting from a lack of T cell help for B cells. The role of SAP in this process is incompletely understood. We found that deletion of receptor Ly108 (Slamf6) in CD4(+) T cells reversed the Sh2d1a(-/-) phenotype, eliminating the SAP requirement for germinal centers. This potent negative signaling by Ly108 required immunotyrosine switch motifs (ITSMs) and SHP-1 recruitment, resulting in high amounts of SHP-1 at the T cell:B cell synapse, limiting T cell:B cell adhesion. Ly108-negative signaling was important not only in CD4(+) T cells; we found that NKT cell differentiation was substantially restored in Slamf6(-/-)Sh2d1a(-/-) mice. The ability of SAP to regulate both positive and negative signals in T cells can explain the severity of SAP deficiency and highlights the importance of SAP and SHP-1 competition for Ly108 ITSM binding as a rheostat for the magnitude of T cell help to B cells.
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Affiliation(s)
- Robin Kageyama
- Division of Vaccine Discovery, La Jolla Institute for Allergy & Immunology, La Jolla, CA 92037, USA
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38
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Dutta M, Schwartzberg PL. Characterization of Ly108 in the thymus: evidence for distinct properties of a novel form of Ly108. THE JOURNAL OF IMMUNOLOGY 2012; 188:3031-41. [PMID: 22393150 DOI: 10.4049/jimmunol.1103226] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Ly108 (CD352) is a member of the signaling lymphocyte activation molecule (SLAM) family of receptors that signals through SLAM-associated protein (SAP), an SH2 domain protein that can function by the recruitment of Src family kinases or by competition with phosphatases. Ly108 is expressed on a variety of hematopoietic cells, with especially high levels on developing thymocytes. We find that Ly108 is constitutively tyrosine phosphorylated in murine thymi in a SAP- and Fyn kinase-dependent manner. Phosphorylation of Ly108 is rapidly lost after thymocyte disaggregation, suggesting dynamic contact-mediated regulation of Ly108. Similar to recent reports, we find at least three isoforms of Ly108 mRNA and protein in the thymus, which are differentially expressed in the thymi of C57BL/6 and 129S6 mice that express the lupus-resistant and lupus-prone haplotypes of Ly108, respectively. Notably, the recently described novel isoform Ly108-H1 is not expressed in mice having the lupus-prone haplotype of Ly108, but is expressed in C57BL/6 mice. We further provide evidence for differential phosphorylation of these isoforms; the novel Ly108-H1does not undergo tyrosine phosphorylation, suggesting that it functions as a decoy isoform that contributes to the reduced overall phosphorylation of Ly108 seen in C57BL/6 mice. Our study suggests that Ly108 is dynamically regulated in the thymus, shedding light on Ly108 isoform expression and phosphorylation.
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Affiliation(s)
- Mala Dutta
- Institute of Biomedical Sciences, The George Washington University, Washington, DC 20052, USA
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39
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Álvarez-Errico D, Oliver-Vila I, Aínsua-Enrich E, Gilfillan AM, Picado C, Sayós J, Martín M. CD84 negatively regulates IgE high-affinity receptor signaling in human mast cells. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2011; 187:5577-86. [PMID: 22068234 PMCID: PMC3233232 DOI: 10.4049/jimmunol.1101626] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
CD84 is a self-binding receptor from the CD150 (or signaling lymphocyte activation molecule [SLAM]) family that is broadly expressed in hematopoietic cells. It has been described that the adaptors SLAM-associated protein (SAP) and EWS-FLI1-activated transcript 2 (EAT-2) are critical for CD150 family members' signaling and function. We observed that human mast cells express CD84 but lack SAP or EAT-2, that CD84 is tyrosine phosphorylated upon FcεRI engagement, and that the release of granule contents is reduced when FcεRI is coengaged with CD84 in LAD2 and human CD34(+)-derived mast cells. In addition, we observed that the release of IL-8 and GM-CSF was also reduced in FcεRI/CD84-costimulated cells as compared with FcεRI/Ig control. To understand how CD84 downregulates FcεRI-mediated function, we analyzed signaling pathways affected by CD84 in human mast cells. Our results showed that CD84 dampens FcεRI-mediated calcium mobilization after its co-cross-linking with the receptor. Furthermore, FcεRI-mediated Syk-linker for activation of T cells-phospholipase C-γ1 axis activity is downregulated after CD84 stimulation, compared with FcεRI/Ig control. The inhibitory kinase Fes phosphorylates mainly the inhibitory motif for CD84. Moreover, Fes, which has been described to become phosphorylated after substrate binding, also gets phosphorylated when coexpressed with CD84. Consistently, Fes was observed to be more phosphorylated after CD84 and FcεRI co-cross-linking. The phosphorylation of the protein phosphatase Src homology region 2 domain-containing phosphatase-1 also increases after CD84 and FcεRI coengagement. Taken together, our results show that CD84 is highly expressed in mast cells and that it contributes to the regulation of FcεRI signaling in SAP- and EAT-2-independent and Fes- and Src homology region 2 domain-containing phosphatase-1-dependent mechanisms.
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Affiliation(s)
- Damiana Álvarez-Errico
- Biochemistry Unit, Faculty of Medicine. University of Barcelona, Casanova 143 Barcelona, 08036, Spain
- Laboratory of Clinic and Experimental Immunoallergy, IDIBAPS, Barcelona, Spain
| | - Irene Oliver-Vila
- Biochemistry Unit, Faculty of Medicine. University of Barcelona, Casanova 143 Barcelona, 08036, Spain
- Networking Research Center on Respiratory Diseases (CIBERES)
| | - Erola Aínsua-Enrich
- Biochemistry Unit, Faculty of Medicine. University of Barcelona, Casanova 143 Barcelona, 08036, Spain
- Laboratory of Clinic and Experimental Immunoallergy, IDIBAPS, Barcelona, Spain
| | - Alasdair M. Gilfillan
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - César Picado
- Laboratory of Clinic and Experimental Immunoallergy, IDIBAPS, Barcelona, Spain
- Networking Research Center on Respiratory Diseases (CIBERES)
| | - Joan Sayós
- Immunobiology Group, CIBBIM-Nanomedicine Program, Hospital Universitari Vall d’Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Instituto de Salud Carlos III, Barcelona, Spain
| | - Margarita Martín
- Biochemistry Unit, Faculty of Medicine. University of Barcelona, Casanova 143 Barcelona, 08036, Spain
- Laboratory of Clinic and Experimental Immunoallergy, IDIBAPS, Barcelona, Spain
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40
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Engel P, Pérez-Carmona N, Albà MM, Robertson K, Ghazal P, Angulo A. Human cytomegalovirus UL7, a homologue of the SLAM-family receptor CD229, impairs cytokine production. Immunol Cell Biol 2011; 89:753-66. [PMID: 21670740 DOI: 10.1038/icb.2011.55] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Human cytomegalovirus (HCMV), the β-herpesvirus prototype, has evolved a wide spectrum of mechanisms to counteract host immunity. Among them, HCMV uses cellular captured genes encoding molecules capable of interfering with the original host function or of fulfilling new immunomodulatory tasks. Here, we report on UL7, a novel HCMV heavily glycosylated transmembrane protein, containing an Ig-like domain that exhibits remarkable amino acid similarity to CD229, a cell-surface molecule of the signalling lymphocyte-activation molecule (SLAM) family involved in leukocyte activation. The UL7 Ig-like domain, which is well-preserved in all HCMV strains, structurally resembles the SLAM-family N-terminal Ig-variable domain responsible for the homophilic and heterophilic interactions that trigger signalling. UL7 is transcribed with early-late kinetics during the lytic infectious cycle. Using a mAb generated against the viral protein, we show that it is constitutively shed, through its mucine-like stalk, from the cell-surface. Production of soluble UL7 is enhanced by PMA and reduced by a broad-spectrum metalloproteinase inhibitor. Although UL7 does not hold the ability to interact with CD229 or other SLAM-family members, it shares with them the capacity to mediate adhesion to leukocytes, specifically to monocyte-derived DCs. Furthermore, we demonstrate that UL7 expression attenuates the production of proinflammatory cytokines TNF, IL-8 and IL-6 in DCs and myeloid cell lines. Thus, the ability of UL7 to interfere with cellular proinflammatory responses may contribute to viral persistence. These results enhance our understanding of those HCMV-encoded molecules involved in sustaining the balance between HCMV and the host immune system.
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Affiliation(s)
- Pablo Engel
- Department of Cell Biology, Immunology, and Neurosciences, Medical School, University of Barcelona, Barcelona, Spain
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41
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Abstract
The signaling lymphocyte activation molecule (SLAM)-associated protein, SAP, was first identified as the protein affected in most cases of X-linked lymphoproliferative (XLP) syndrome, a rare genetic disorder characterized by abnormal responses to Epstein-Barr virus infection, lymphoproliferative syndromes, and dysgammaglobulinemia. SAP consists almost entirely of a single SH2 protein domain that interacts with the cytoplasmic tail of SLAM and related receptors, including 2B4, Ly108, CD84, Ly9, and potentially CRACC. SLAM family members are now recognized as important immunomodulatory receptors with roles in cytotoxicity, humoral immunity, autoimmunity, cell survival, lymphocyte development, and cell adhesion. In this review, we cover recent findings on the roles of SLAM family receptors and the SAP family of adaptors, with a focus on their regulation of the pathways involved in the pathogenesis of XLP and other immune disorders.
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Affiliation(s)
- Jennifer L Cannons
- National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland 20892, USA.
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42
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Abstract
T cell help to B cells is a fundamental aspect of adaptive immunity and the generation of immunological memory. Follicular helper CD4 T (T(FH)) cells are the specialized providers of B cell help. T(FH) cells depend on expression of the master regulator transcription factor Bcl6. Distinguishing features of T(FH) cells are the expression of CXCR5, PD-1, SAP (SH2D1A), IL-21, and ICOS, among other molecules, and the absence of Blimp-1 (prdm1). T(FH) cells are important for the formation of germinal centers. Once germinal centers are formed, T(FH) cells are needed to maintain them and to regulate germinal center B cell differentiation into plasma cells and memory B cells. This review covers T(FH) differentiation, T(FH) functions, and human T(FH) cells, discussing recent progress and areas of uncertainty or disagreement in the literature, and it debates the developmental relationship between T(FH) cells and other CD4 T cell subsets (Th1, Th2, Th17, iTreg).
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Affiliation(s)
- Shane Crotty
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, California 92037, USA.
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43
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Veillette A. SLAM-family receptors: immune regulators with or without SAP-family adaptors. Cold Spring Harb Perspect Biol 2010; 2:a002469. [PMID: 20300214 DOI: 10.1101/cshperspect.a002469] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The signaling lymphocytic activation molecule (SLAM) family of receptors and the SLAM-associated protein (SAP) family of intracellular adaptors are expressed in immune cells. By way of their cytoplasmic domain, SLAM-related receptors physically associate with SAP-related adaptors. Evidence is accumulating that the SLAM and SAP families play crucial roles in multiple immune cell types. Moreover, the prototype of the SAP family, that is SAP, is mutated in a human immunodeficiency, X-linked lymphoproliferative (XLP) disease. In the presence of SAP-family adaptors, the SLAM family usually mediates stimulatory signals that promote immune cell activation or differentiation. In the absence of SAP-family adaptors, though, the SLAM family undergoes a "switch-of-function," thereby mediating inhibitory signals that suppress immune cell functions. The molecular basis and significance of this mechanism are discussed herein.
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Affiliation(s)
- André Veillette
- Laboratory of Molecular Oncology, Clinical Research Institute of Montréal, Montréal, Québec, Canada.
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44
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Sintes J, Romero X, de Salort J, Terhorst C, Engel P. Mouse CD84 is a pan-leukocyte cell-surface molecule that modulates LPS-induced cytokine secretion by macrophages. J Leukoc Biol 2010; 88:687-97. [PMID: 20628063 DOI: 10.1189/jlb.1109756] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
CD84 is 1 of the 9 SLAM family cell-surface receptors involved in leukocyte activation. The CD84 ectodomain is highly glycosylated, and its cytoplasmic tail contains 2 copies of an ITSM, which can be phosphorylated. Here, we report that although mouse CD84 was present on all BM HSCs, its expression declined in developing thymic and BM lymphocytes. However, CD84 expression levels did increase significantly during the later maturation stages and were expressed abundantly on mature B and T cells. Among lymphocyte subsets, the highest expression was found on innate-like lymphocytes; specifically, on NKT and marginal zone B cells. Splenic CD4+ T(FH) cells exhibited higher levels of CD84 compared with the other CD4+ T cell subsets. CD84 was expressed abundantly on monocytes, macrophages, granulocytes, and DCs. Moreover, as the function of CD84 in myeloid cells remains unknown, we focused on the role this receptor plays in mouse macrophage activation. Transfection of CD84 in RAW-264.7 macrophages led to an increase in MAPK phosphorylation and NF-κB activation upon LPS stimulation. Concomitantly, the presence of CD84 increased the LPS-induced secretion of TNF-α and MCP-1 but lowered IL-10 and IL-6 production significantly. This modulatory effect was mediated by Y(300) within the second ITSM of CD84. Additionally, CD84 knock-down decreased TNF-α and IL-6 production in LPS-activated BMDMs. Taken together, these results show that mouse CD84 is a pan-leukocyte receptor, able to modulate signaling pathways downstream of TLR4, and regulates macrophage cell-fate decisions and effector functions.
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Affiliation(s)
- Jordi Sintes
- Immunology Unit, Department of Cell Biology, Immunology and Neurosciences, Medical School, University of Barcelona, Institute of Biomedical Research August Pi Sunyer (IDIBAPS), Spain
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45
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Yusuf I, Kageyama R, Monticelli L, Johnston RJ, Ditoro D, Hansen K, Barnett B, Crotty S. Germinal center T follicular helper cell IL-4 production is dependent on signaling lymphocytic activation molecule receptor (CD150). THE JOURNAL OF IMMUNOLOGY 2010; 185:190-202. [PMID: 20525889 DOI: 10.4049/jimmunol.0903505] [Citation(s) in RCA: 328] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
CD4 T cell help is critical for the generation and maintenance of germinal centers (GCs), and T follicular helper (T(FH)) cells are the CD4 T cell subset required for this process. Signaling lymphocytic activation molecule (SLAM)-associated protein (SAP [SH2D1A]) expression in CD4 T cells is essential for GC development. However, SAP-deficient mice have only a moderate defect in T(FH) differentiation, as defined by common T(FH) surface markers. CXCR5(+) T(FH) cells are found within the GC, as well as along the boundary regions of T/B cell zones. In this study, we show that GC-associated T follicular helper (GC T(FH)) cells can be identified by their coexpression of CXCR5 and the GL7 epitope, allowing for phenotypic and functional analysis of T(FH) and GC T(FH) populations. GC T(FH) cells are a functionally discrete subset of further polarized T(FH) cells, with enhanced B cell help capacity and a specialized ability to produce IL-4 in a T(H)2-independent manner. Strikingly, SAP-deficient mice have an absence of the GC T(FH) cell subset and SAP(-) T(FH) cells are defective in IL-4 and IL-21 production. We further demonstrate that SLAM (Slamf1, CD150), a surface receptor that uses SAP signaling, is specifically required for IL-4 production by GC T(FH) cells. GC T(FH) cells require IL-4 and -21 production for optimal help to B cells. These data illustrate complexities of SAP-dependent SLAM family receptor signaling, revealing a prominent role for SLAM receptor ligation in IL-4 production by GC CD4 T cells but not in T(FH) cell and GC T(FH) cell differentiation.
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Affiliation(s)
- Isharat Yusuf
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, School of Medicine, La Jolla, CA 92037, USA
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46
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Cannons JL, Qi H, Lu KT, Dutta M, Gomez-Rodriguez J, Cheng J, Wakeland EK, Germain RN, Schwartzberg PL. Optimal germinal center responses require a multistage T cell:B cell adhesion process involving integrins, SLAM-associated protein, and CD84. Immunity 2010; 32:253-65. [PMID: 20153220 DOI: 10.1016/j.immuni.2010.01.010] [Citation(s) in RCA: 303] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2009] [Revised: 10/31/2009] [Accepted: 01/22/2010] [Indexed: 12/20/2022]
Abstract
CD4(+) T cells deficient in signaling lymphocyte activation molecule (SLAM)-associated protein (SAP) exhibit a selective impairment in adhesion to antigen-presenting B cells but not dendritic cells (DCs), resulting in defective germinal center formation. However, the nature of this selective adhesion defect remained unclear. We found that whereas T cell:DC interactions were primarily integrin dependent, T cell:B cell interactions had both an early integrin-dependent phase and a sustained phase that also required SAP. We further found that the SLAM family member CD84 was required for prolonged T cell:B cell contact, optimal T follicular helper function, and germinal center formation in vivo. Moreover, both CD84 and another SLAM member, Ly108, mediated T cell adhesion and participated in stable T cell:B cell interactions in vitro. Our results reveal insight into the dynamic regulation of T cell:B cell interactions and identify SLAM family members as critical components of sustained T cell:B cell adhesion required for productive humoral immunity.
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Affiliation(s)
- Jennifer L Cannons
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
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47
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Detre C, Keszei M, Romero X, Tsokos GC, Terhorst C. SLAM family receptors and the SLAM-associated protein (SAP) modulate T cell functions. Semin Immunopathol 2010; 32:157-71. [PMID: 20146065 DOI: 10.1007/s00281-009-0193-0] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2009] [Accepted: 12/30/2009] [Indexed: 01/05/2023]
Abstract
One or more of the signaling lymphocytic activation molecule (SLAM) family (SLAMF) of cell surface receptors, which consists of nine transmembrane proteins, i.e., SLAMF1-9, are expressed on most hematopoietic cells. While most SLAMF receptors serve as self-ligands, SLAMF2 and SLAMF4 use each other as counter structures. Six of the receptors carry one or more copies of a unique intracellular tyrosine-based switch motif, which has high affinity for the single SH2-domain signaling molecules SLAM-associated protein and EAT-2. Whereas SLAMF receptors are costimulatory molecules on the surface of CD4+, CD8+, and natural killer (NK) T cells, they also involved in early phases of lineage commitment during hematopoiesis. SLAMF receptors regulate T lymphocyte development and function and modulate lytic activity, cytokine production, and major histocompatibility complex-independent cell inhibition of NK cells. Furthermore, they modulate B cell activation and memory generation, neutrophil, dendritic cell, macrophage and eosinophil function, and platelet aggregation. In this review, we will discuss the role of SLAM receptors and their adapters in T cell function, and we will examine the role of these receptors and their adapters in X-linked lymphoproliferative disease and their contribution to disease susceptibility in systemic lupus erythematosus.
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Affiliation(s)
- Cynthia Detre
- BIDMC Division of Immunology, Harvard Center for Life Sciences, Rm. CLS 938, 3 Blackfan Circle, Boston, MA 02115, USA.
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48
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Santiago C, Celma ML, Stehle T, Casasnovas JM. Structure of the measles virus hemagglutinin bound to the CD46 receptor. Nat Struct Mol Biol 2009; 17:124-9. [DOI: 10.1038/nsmb.1726] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2009] [Accepted: 09/29/2009] [Indexed: 12/25/2022]
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Imipramine treatment and resiliency exhibit similar chromatin regulation in the mouse nucleus accumbens in depression models. J Neurosci 2009; 29:7820-32. [PMID: 19535594 DOI: 10.1523/jneurosci.0932-09.2009] [Citation(s) in RCA: 194] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Although it is a widely studied psychiatric syndrome, major depressive disorder remains a poorly understood illness, especially with regard to the disconnect between treatment initiation and the delayed onset of clinical improvement. We have recently validated chronic social defeat stress in mice as a model in which a depression-like phenotype is reversed by chronic, but not acute, antidepressant administration. Here, we use chromatin immunoprecipitation (ChIP)-chip assays--ChIP followed by genome wide promoter array analyses--to study the effects of chronic defeat stress on chromatin regulation in the mouse nucleus accumbens (NAc), a key brain reward region implicated in depression. Our results demonstrate that chronic defeat stress causes widespread and long-lasting changes in gene regulation, including alterations in repressive histone methylation and in phospho-CREB (cAMP response element-binding protein) binding, in the NAc. We then show similarities and differences in this regulation to that observed in another mouse model of depression, prolonged adult social isolation. In the social defeat model, we observed further that many of the stress-induced changes in gene expression are reversed by chronic imipramine treatment, and that resilient mice-those resistant to the deleterious effects of defeat stress-show patterns of chromatin regulation in the NAc that overlap dramatically with those seen with imipramine treatment. These findings provide new insight into the molecular basis of depression-like symptoms and the mechanisms by which antidepressants exert their delayed clinical efficacy. They also raise the novel idea that certain individuals resistant to stress may naturally mount antidepressant-like adaptations in response to chronic stress.
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Chattopadhyay K, Lazar-Molnar E, Yan Q, Rubinstein R, Zhan C, Vigdorovich V, Ramagopal UA, Bonanno J, Nathenson SG, Almo SC. Sequence, structure, function, immunity: structural genomics of costimulation. Immunol Rev 2009; 229:356-86. [PMID: 19426233 DOI: 10.1111/j.1600-065x.2009.00778.x] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
SUMMARY Costimulatory receptors and ligands trigger the signaling pathways that are responsible for modulating the strength, course, and duration of an immune response. High-resolution structures have provided invaluable mechanistic insights by defining the chemical and physical features underlying costimulatory receptor:ligand specificity, affinity, oligomeric state, and valency. Furthermore, these structures revealed general architectural features that are important for the integration of these interactions and their associated signaling pathways into overall cellular physiology. Recent technological advances in structural biology promise unprecedented opportunities for furthering our understanding of the structural features and mechanisms that govern costimulation. In this review, we highlight unique insights that have been revealed by structures of costimulatory molecules from the immunoglobulin and tumor necrosis factor superfamilies and describe a vision for future structural and mechanistic analysis of costimulation. This vision includes simple strategies for the selection of candidate molecules for structure determination and highlights the critical role of structure in the design of mutant costimulatory molecules for the generation of in vivo structure-function correlations in a mammalian model system. This integrated 'atoms-to-animals' paradigm provides a comprehensive approach for defining atomic and molecular mechanisms.
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Affiliation(s)
- Kausik Chattopadhyay
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA
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