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Song Y, Jin Q, Zhou B, Deng C, Zhou W, Li W, Yi L, Ding M, Chen Y, Gao T, Zhang L, Xie M. A novel FK506-loading mesoporous silica nanoparticle homing to lymph nodes for transplant rejection treatment. Int J Pharm 2024; 656:124074. [PMID: 38565406 DOI: 10.1016/j.ijpharm.2024.124074] [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: 10/10/2023] [Revised: 03/04/2024] [Accepted: 03/30/2024] [Indexed: 04/04/2024]
Abstract
Tacrolimus (FK506) is an effective therapeutic for transplant rejection in clinical practice, primarily inhibiting rejection by suppressing the activation and proliferation of allogeneic T cells in the lymph nodes (LNs). However, conventional administration methods face challenges in directly delivering free FK506 to the LNs. In this study, we introduce a novel LN-targeted delivery system based on mesoporous silica nanoparticles (MSNs-FK506-MECA79). These particles were designed to selectively target high endothelial venules in LNs; this was achieved through surface modification with MECA79 antibodies. Their mean size and zeta potential were 201.18 ± 5.98 nm and - 16.12 ± 0.36 mV, respectively. Our findings showed that MSNs-FK506-MECA79 could accumulate in LNs and increase the local concentration of FK506 from 28.02 ± 7.71 ng/g to 123.81 ± 76.76 ng/g compared with the free FK506 treatment group. Subsequently, the therapeutic efficacy of MSNs-FK506-MECA79 was evaluated in a skin transplantation model. The treatment with MSNs-FK506-MECA79 could lead to a decrease in the infiltration of T cells in the grafts, a reduction in the grade of rejection, and a significant prolongation of survival. Consequently, this study presents a promising strategy for the active LN-targeted delivery of FK506 and improving the immunotherapeutic effects on transplant rejection.
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Affiliation(s)
- Yishu Song
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China; Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518000, China
| | - Qiaofeng Jin
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China; Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518000, China
| | - Binqian Zhou
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China; Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518000, China
| | - Cheng Deng
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China; Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518000, China
| | - Wuqi Zhou
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China; Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518000, China
| | - Wenqu Li
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China; Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518000, China
| | - Luyang Yi
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China; Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518000, China
| | - Mengdan Ding
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China; Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518000, China
| | - Yihan Chen
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China; Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518000, China
| | - Tang Gao
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China; Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518000, China
| | - Li Zhang
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China; Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518000, China.
| | - Mingxing Xie
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China; Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518000, China.
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2
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Lan X, Luo M, Li M, Mu L, Li G, Chen G, He Z, Xiao J. Swim bladder-derived biomaterials: structures, compositions, properties, modifications, and biomedical applications. J Nanobiotechnology 2024; 22:186. [PMID: 38632585 PMCID: PMC11022367 DOI: 10.1186/s12951-024-02449-w] [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: 08/10/2023] [Accepted: 04/01/2024] [Indexed: 04/19/2024] Open
Abstract
Animal-derived biomaterials have been extensively employed in clinical practice owing to their compositional and structural similarities with those of human tissues and organs, exhibiting good mechanical properties and biocompatibility, and extensive sources. However, there is an associated risk of infection with pathogenic microorganisms after the implantation of tissues from pigs, cattle, and other mammals in humans. Therefore, researchers have begun to explore the development of non-mammalian regenerative biomaterials. Among these is the swim bladder, a fish-derived biomaterial that is rapidly used in various fields of biomedicine because of its high collagen, elastin, and polysaccharide content. However, relevant reviews on the biomedical applications of swim bladders as effective biomaterials are lacking. Therefore, based on our previous research and in-depth understanding of this field, this review describes the structures and compositions, properties, and modifications of the swim bladder, with their direct (including soft tissue repair, dural repair, cardiovascular repair, and edible and pharmaceutical fish maw) and indirect applications (including extracted collagen peptides with smaller molecular weights, and collagen or gelatin with higher molecular weights used for hydrogels, and biological adhesives or glues) in the field of biomedicine in recent years. This review provides insights into the use of swim bladders as source of biomaterial; hence, it can aid biomedicine scholars by providing directions for advancements in this field.
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Affiliation(s)
- Xiaorong Lan
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital, Southwest Medical University, Luzhou, 646000, China
- Metabolic Vascular Diseases Key Laboratory of Sichuan Province, Southwest Medical University, Luzhou, 646000, China
- Basic Medicine Research Innovation Center for Cardiometabolic Diseases, Ministry of Education, Southwest Medical University, Luzhou, 646000, China
- Institute of Stomatology, Southwest Medical University, Luzhou, 646000, China
| | - Mingdong Luo
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital, Southwest Medical University, Luzhou, 646000, China
- Institute of Stomatology, Southwest Medical University, Luzhou, 646000, China
| | - Meiling Li
- Southwest Hospital of Army Military Medical University, Chongqing, 400038, China
| | - Linpeng Mu
- Institute for Advanced Study, Research Center of Composites & Surface and Interface Engineering, Chengdu University, Chengdu, 610106, China
| | - Guangwen Li
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital, Southwest Medical University, Luzhou, 646000, China
- Institute of Stomatology, Southwest Medical University, Luzhou, 646000, China
| | - Gong Chen
- Department of Cardiology, The Affiliated Hospital, Southwest Medical University, Luzhou, 646000, China.
| | - Zhoukun He
- Institute for Advanced Study, Research Center of Composites & Surface and Interface Engineering, Chengdu University, Chengdu, 610106, China.
| | - Jingang Xiao
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital, Southwest Medical University, Luzhou, 646000, China.
- Institute of Stomatology, Southwest Medical University, Luzhou, 646000, China.
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3
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Zhao W, Li M, Song S, Zhi Y, Huan C, Lv G. The role of natural killer T cells in liver transplantation. Front Cell Dev Biol 2024; 11:1274361. [PMID: 38250325 PMCID: PMC10796773 DOI: 10.3389/fcell.2023.1274361] [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: 08/08/2023] [Accepted: 12/15/2023] [Indexed: 01/23/2024] Open
Abstract
Natural killer T cells (NKTs) are innate-like lymphocytes that are abundant in the liver and participate in liver immunity. NKT cells express both NK cell and T cell markers, modulate innate and adaptive immune responses. Type I and Type II NKT cells are classified according to the TCR usage, while they recognize lipid antigen in a non-classical major histocompatibility (MHC) molecule CD1d-restricted manner. Once activated, NKT cells can quickly produce cytokines and chemokines to negatively or positively regulate the immune responses, depending on the different NKT subsets. In liver transplantation (LTx), the immune reactions in a series of processes determine the recipients' long-term survival, including ischemia-reperfusion injury, alloresponse, and post-transplant infection. This review provides insight into the research on NKT cells subpopulations in LTx immunity during different processes, and discusses the shortcomings of the current research on NKT cells. Additionally, the CD56-expressing T cells are recognized as a NK-like T cell population, they were also discussed during these processes.
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Affiliation(s)
- Wenchao Zhao
- Department of Hepatobiliary and Pancreatic Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Mingqian Li
- Department of Hepatobiliary and Pancreatic Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Shifei Song
- Department of Hepatobiliary and Pancreatic Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Yao Zhi
- Department of Hepatobiliary and Pancreatic Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Chen Huan
- Center of Infectious Diseases and Pathogen Biology, Institute of Virology and AIDS Research, Key Laboratory of Organ Regeneration and Transplantation of The Ministry of Education, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Guoyue Lv
- Department of Hepatobiliary and Pancreatic Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin, China
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Bommakanti K, Seist R, Kukutla P, Cetinbas M, Batts S, Sadreyev RI, Stemmer-Rachamimov A, Brenner GJ, Stankovic KM. Comparative Transcriptomic Analysis of Archival Human Vestibular Schwannoma Tissue from Patients with and without Tinnitus. J Clin Med 2023; 12:jcm12072642. [PMID: 37048724 PMCID: PMC10095534 DOI: 10.3390/jcm12072642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/22/2023] [Accepted: 03/25/2023] [Indexed: 04/05/2023] Open
Abstract
Vestibular schwannoma (VS) is an intracranial tumor that commonly presents with tinnitus and hearing loss. To uncover the molecular mechanisms underlying VS-associated tinnitus, we applied next-generation sequencing (Illumina HiSeq) to formalin-fixed paraffin-embedded archival VS samples from nine patients with tinnitus (VS-Tin) and seven patients without tinnitus (VS-NoTin). Bioinformatic analysis was used to detect differentially expressed genes (DEG; i.e., ≥two-fold change [FC]) while correcting for multiple comparisons. Using RNA-seq analysis, VS-Tin had significantly lower expression of GFAP (logFC = −3.04), APLNR (logFC = −2.95), PREX2 (logFC = −1.44), and PLVAP (logFC = −1.04; all p < 0.01) vs. VS-NoTin. These trends were validated by using real-time RT-qPCR. At the protein level, immunohistochemistry revealed a trend for less PREX2 and apelin expression and greater expression of NLRP3 inflammasome and CD68-positive macrophages in VS-Tin than in VS-NoTin, suggesting the activation of inflammatory processes in VS-Tin. Functional enrichment analysis revealed that the top three protein categories—glycoproteins, signal peptides, and secreted proteins—were significantly enriched in VS-Tin in comparison with VS-NoTin. In a gene set enrichment analysis, the top pathway was allograft rejection, an inflammatory pathway that includes the MMP9, CXCL9, IL16, PF4, ITK, and ACVR2A genes. Future studies are needed to examine the importance of these candidates and of inflammation in VS-associated tinnitus.
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Affiliation(s)
- Krishna Bommakanti
- Department of Otolaryngology–Head and Neck Surgery, Massachusetts Eye and Ear and Harvard Medical School, Boston, MA 02114, USA
- Department of Head and Neck Surgery, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Richard Seist
- Department of Otolaryngology–Head and Neck Surgery, Massachusetts Eye and Ear and Harvard Medical School, Boston, MA 02114, USA
- Department of Otolaryngology–Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
- Department of Otorhinolaryngology–Head and Neck Surgery, Paracelsus Medical University, 5020 Salzburg, Austria
| | - Phanidhar Kukutla
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Murat Cetinbas
- Department of Molecular Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Shelley Batts
- Department of Otolaryngology–Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Ruslan I. Sadreyev
- Department of Molecular Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Anat Stemmer-Rachamimov
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Gary J. Brenner
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Konstantina M. Stankovic
- Department of Otolaryngology–Head and Neck Surgery, Massachusetts Eye and Ear and Harvard Medical School, Boston, MA 02114, USA
- Department of Otolaryngology–Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA
- Wu Tsai Neuroscience Institute, Stanford University, Stanford, CA 94305, USA
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5
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Ellison M, Mangiola M, Marrari M, Bentlejewski C, Sadowski J, Zern D, Kramer CSM, Heidt S, Niemann M, Xu Q, Dipchand AI, Mahle WT, Rossano JW, Canter CE, Singh TP, Zuckerman WA, Hsu DT, Feingold B, Webber SA, Zeevi A. Immunologic risk stratification of pediatric heart transplant patients by combining HLA-EMMA and PIRCHE-II. Front Immunol 2023; 14:1110292. [PMID: 36999035 PMCID: PMC10043167 DOI: 10.3389/fimmu.2023.1110292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 02/28/2023] [Indexed: 03/16/2023] Open
Abstract
Human leukocyte antigen (HLA) molecular mismatch is a powerful biomarker of rejection. Few studies have explored its use in assessing rejection risk in heart transplant recipients. We tested the hypothesis that a combination of HLA Epitope Mismatch Algorithm (HLA-EMMA) and Predicted Indirectly Recognizable HLA Epitopes (PIRCHE-II) algorithms can improve risk stratification of pediatric heart transplant recipients. Class I and II HLA genotyping were performed by next-generation sequencing on 274 recipient/donor pairs enrolled in the Clinical Trials in Organ Transplantation in Children (CTOTC). Using high-resolution genotypes, we performed HLA molecular mismatch analysis with HLA-EMMA and PIRCHE-II, and correlated these findings with clinical outcomes. Patients without pre-formed donor specific antibody (DSA) (n=100) were used for correlations with post-transplant DSA and antibody mediated rejection (ABMR). Risk cut-offs were determined for DSA and ABMR using both algorithms. HLA-EMMA cut-offs alone predict the risk of DSA and ABMR; however, if used in combination with PIRCHE-II, the population could be further stratified into low-, intermediate-, and high-risk groups. The combination of HLA-EMMA and PIRCHE-II enables more granular immunological risk stratification. Intermediate-risk cases, like low-risk cases, are at a lower risk of DSA and ABMR. This new way of risk evaluation may facilitate individualized immunosuppression and surveillance.
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Affiliation(s)
- M. Ellison
- University of Pittsburgh Medical Center, Histocompatibility Laboratory, Pittsburgh, PA, United States
- *Correspondence: M. Ellison,
| | - M. Mangiola
- Transplant Institute, NYU Langone Health, New York University, New York, NY, United States
| | - M. Marrari
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - C. Bentlejewski
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - J. Sadowski
- University of Pittsburgh Medical Center, Histocompatibility Laboratory, Pittsburgh, PA, United States
| | - D. Zern
- University of Pittsburgh Medical Center, Histocompatibility Laboratory, Pittsburgh, PA, United States
| | | | - S. Heidt
- Department of Immunology, Leiden University Medical Center (LUMC), Leiden, Netherlands
| | - M. Niemann
- Research and Development, PIRCHE AG, Berlin, Germany
| | - Q. Xu
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - A. I. Dipchand
- Labatt Heart Centre, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - W. T. Mahle
- Children’s Healthcare of Atlanta, Emory University, Atlanta, GA, United States
| | - J. W. Rossano
- Division of Cardiology, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - C. E. Canter
- Division of Cardiology, Department of Pediatrics, School of Medicine, University of Washington, Seattle, WA, United States
| | - T. P. Singh
- Department of Cardiology, Boston Children’s Hospital, Harvard Medical School, Boston, MA, United States
| | - W. A. Zuckerman
- Columbia University, Irving Medical Center, New York, NY, United States
| | - D. T. Hsu
- Division of Pediatric Cardiology, Children’s Hospital at Montefiore, Albert Einstein College of Medicine, Bronx, New York, NY, United States
| | - B. Feingold
- Department of Pediatrics, Children’s Hospital of Pittsburgh, Pittsburgh, PA, United States
| | - S. A. Webber
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, United States
| | - A. Zeevi
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
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6
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Immunopathological insights into villitis of unknown etiology on the basis of transplant immunology. Placenta 2023; 131:49-57. [PMID: 36473393 DOI: 10.1016/j.placenta.2022.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 11/15/2022] [Indexed: 11/27/2022]
Abstract
Villitis of unknown etiology (VUE) is an inflammatory disease characterized by the infiltration of maternal CD8 +T cells into the placental villi. Although the pathogenesis of VUE is still debated, dysregulation of the immune system appears to be an important factor in the development of the disease. Interaction of maternal T cells with the fetal antigens seems to be the trigger for the VUE onset. In this context, graft vs host disease (GVHD) and allographic rejection seem to share similarities in the VUE immunopathological mechanism, especially those related to immunoregulation. In this review, we compared the immunological characteristics of VUE with allograft rejection, and GVHD favoring a better knowledge of VUE pathogenesis that may contribute to VUE therapeutics strategies in the future.
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Lagumdzic E, Pernold C, Viano M, Olgiati S, Schmitt MW, Mair KH, Saalmüller A. Transcriptome Profiling of Porcine Naïve, Intermediate and Terminally Differentiated CD8 + T Cells. Front Immunol 2022; 13:849922. [PMID: 35265090 PMCID: PMC8900158 DOI: 10.3389/fimmu.2022.849922] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 02/02/2022] [Indexed: 12/12/2022] Open
Abstract
The pig has the potential to become a leading research model for human diseases, pharmacological and transplantation studies. Since there are many similarities between humans and pigs, especially concerning anatomy, physiology and metabolism, there is necessity for a better understanding of the porcine immune system. In adaptive immunity, cytotoxic T lymphocytes (CTLs) are essential for host defense. However, most data on CTLs come from studies in mice, non-human primates and humans, while detailed information about porcine CD8+ CTLs is still sparse. Aim of this study was to analyze transcriptomes of three subsets of porcine CD8β+ T-cell subsets by using next-generation sequencing technology. Specifically, we described transcriptional profiles of subsets defined by their CD11a/CD27 expression pattern, postulated as naïve (CD8β+CD27+CD11alow), intermediate differentiated (CD8β+CD27dimCD11a+), and terminally differentiated cells (CD8β+CD27-CD11ahigh). Cells were analyzed in ex vivo condition as well as upon in vitro stimulation with concanavalin A (ConA) and PMA/ionomycin. Our analyses show that the highest number of differentially expressed genes was identified between naïve and terminally differentiated CD8+ T-cell subsets, underlining their difference in gene expression signature and respective differentiation stages. Moreover, genes related to early (IL7-R, CCR7, SELL, TCF7, LEF1, BACH2, SATB1, ZEB1 and BCL2) and late (KLRG1, TBX21, PRDM1, CX3CR1, ZEB2, ZNF683, BATF, EZH2 and ID2) stages of CD8+ T-cell differentiation were highly expressed in the naïve and terminally differentiated CD8+ T-cell subsets, respectively. Intermediate differentiated CD8+ T-cell subsets shared a more comparable gene expression profile associated with later stages of T-cell differentiation. Genes associated with cytolytic activity (GNLY, PRF1, GZMB, FASL, IFNG and TNF) were highly expressed in terminally and intermediate differentiated CD8+ T-cell subsets, while naïve CD8+ T cells lacked expression even after in vitro stimulation. Overall, PMA/ionomycin stimulation induced much stronger upregulation of genes compared to stimulation with ConA. Taken together, we provided comprehensive results showing transcriptional profiles of three differentiation stages of porcine CD8+ T-cell subsets. In addition, our study provides a powerful toolbox for the identification of candidate markers to characterize porcine immune cell subsets in more detail.
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Affiliation(s)
- Emil Lagumdzic
- Department of Pathobiology, Institute of Immunology, University of Veterinary Medicine, Vienna, Austria
| | - Clara Pernold
- Department of Pathobiology, Institute of Immunology, University of Veterinary Medicine, Vienna, Austria
| | - Marta Viano
- Istituto di Ricerche Biomediche "A. Marxer" RBM S.p.A., Torino, Italy
| | - Simone Olgiati
- Istituto di Ricerche Biomediche "A. Marxer" RBM S.p.A., Torino, Italy
| | - Michael W Schmitt
- Merck Healthcare KGaA, Chemical & Preclinical Safety, Darmstadt, Germany
| | - Kerstin H Mair
- Department of Pathobiology, Institute of Immunology, University of Veterinary Medicine, Vienna, Austria.,Christian Doppler Laboratory for Optimized Prediction of Vaccination Success in Pigs, Department of Pathobiology, Institute of Immunology, University of Veterinary Medicine, Vienna, Austria
| | - Armin Saalmüller
- Department of Pathobiology, Institute of Immunology, University of Veterinary Medicine, Vienna, Austria
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8
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Bunting MD, Vyas M, Requesens M, Langenbucher A, Schiferle EB, Manguso RT, Lawrence MS, Demehri S. Extracellular matrix proteins regulate NK cell function in peripheral tissues. SCIENCE ADVANCES 2022; 8:eabk3327. [PMID: 35294229 PMCID: PMC8926340 DOI: 10.1126/sciadv.abk3327] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Natural killer (NK) cells reject major histocompatibility complex class I (MHC-I)-deficient bone marrow through direct cytotoxicity but not solid organ transplants devoid of MHC-I. Here, we demonstrate an immediate switch in NK cell function upon exit from the circulation, characterized by a shift from direct cytotoxicity to chemokine/cytokine production. In the skin transplant paradigm, combining an NK cell-specific activating ligand, m157, with missing self MHC-I resulted in complete graft rejection, which was dependent on NK cells as potential helpers and T cells as effectors. Extracellular matrix proteins, collagen I, collagen III, and elastin, blocked NK cell cytotoxicity and promoted their chemokine/cytokine production. NK cell cytotoxicity against MHC-I-deficient melanoma in the skin was markedly increased by blocking tumor collagen deposition. MHC-I down-regulation occurred in solid human cancers but not leukemias, which could be directly targeted by circulating cytotoxic NK cells. Our findings uncover a fundamental mechanism that restricts direct NK cell cytotoxicity in peripheral tissues.
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Affiliation(s)
- Mark D. Bunting
- Center for Cancer Immunology and Cutaneous Biology Research Center, Department of Dermatology and Center for Cancer Research, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Maulik Vyas
- Center for Cancer Immunology and Cutaneous Biology Research Center, Department of Dermatology and Center for Cancer Research, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Marta Requesens
- Center for Cancer Immunology and Cutaneous Biology Research Center, Department of Dermatology and Center for Cancer Research, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Adam Langenbucher
- Center for Cancer Research, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Erik B. Schiferle
- Center for Cancer Immunology and Cutaneous Biology Research Center, Department of Dermatology and Center for Cancer Research, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Robert T. Manguso
- Center for Cancer Research, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
- Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA
| | - Michael S. Lawrence
- Center for Cancer Research, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
- Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Shadmehr Demehri
- Center for Cancer Immunology and Cutaneous Biology Research Center, Department of Dermatology and Center for Cancer Research, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
- Corresponding author.
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9
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IRF4 ablation in B cells abrogates allogeneic B cell responses and prevents chronic transplant rejection. J Heart Lung Transplant 2021; 40:1122-1132. [PMID: 34253454 DOI: 10.1016/j.healun.2021.06.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 05/20/2021] [Accepted: 06/08/2021] [Indexed: 11/24/2022] Open
Abstract
BACKGOUND B cells contribute to chronic transplant rejection by producing donor-specific antibodies and promoting T cell response, but how these processes are regulated at the transcriptional level remains unclear. Herein, we investigate the role of transcription factor interferon regulatory factor 4 (IRF4) in controlling B cell response during chronic transplant rejection. METHODS We generated the Irf4gfp reporter mice to determine IRF4 expression in B cell lineage. We then used mice with B cell-specific IRF4 deletion to define the role of IRF4 in B cell response after NP-KLH immunization or allogeneic heart transplantation. In particular, graft survival and histology, as well as B and T cell responses, were evaluated after transplantation. RESULTS IRF4 is dynamically expressed at different stages of B cell development and is absent in germinal center (GC) B cells. However, IRF4 ablation in the B cell lineage primarily eliminates GC B cells in both naïve and NP-KLH immunized mice. In the transplantation setting, IRF4 functions intrinsically in B cells and governs allogeneic B cell responses at multiple levels, including GC B cell generation, plasma cell differentiation, donor-specific antibody production, and support of T cell response. B cell-specific IRF4 deletion combined with transient CTLA4-Ig treatment abrogates acute and chronic cardiac allograft rejection in naïve recipient mice but not in donor skin-sensitized recipients. CONCLUSIONS B cells require IRF4 to mediate chronic transplant rejection. IRF4 ablation in B cells abrogates allogeneic B cell responses and may also inhibit the ability of B cells to prime allogenic T cells. Targeting IRF4 in B cells represents a potential therapeutic strategy for eliminating chronic transplant rejection.
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Amubieya O, Ramsey A, DerHovanessian A, Fishbein GA, Lynch JP, Belperio JA, Weigt SS. Chronic Lung Allograft Dysfunction: Evolving Concepts and Therapies. Semin Respir Crit Care Med 2021; 42:392-410. [PMID: 34030202 DOI: 10.1055/s-0041-1729175] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The primary factor that limits long-term survival after lung transplantation is chronic lung allograft dysfunction (CLAD). CLAD also impairs quality of life and increases the costs of medical care. Our understanding of CLAD continues to evolve. Consensus definitions of CLAD and the major CLAD phenotypes were recently updated and clarified, but it remains to be seen whether the current definitions will lead to advances in management or impact care. Understanding the potential differences in pathogenesis for each CLAD phenotype may lead to novel therapeutic strategies, including precision medicine. Recognition of CLAD risk factors may lead to earlier interventions to mitigate risk, or to avoid risk factors all together, to prevent the development of CLAD. Unfortunately, currently available therapies for CLAD are usually not effective. However, novel therapeutics aimed at both prevention and treatment are currently under investigation. We provide an overview of the updates to CLAD-related terminology, clinical phenotypes and their diagnosis, natural history, pathogenesis, and potential strategies to treat and prevent CLAD.
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Affiliation(s)
- Olawale Amubieya
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Allison Ramsey
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Ariss DerHovanessian
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Gregory A Fishbein
- Department of Pathology, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Joseph P Lynch
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - John A Belperio
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - S Samuel Weigt
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
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11
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In silico data mining of large-scale databases for the virtual screening of human interleukin-2 inhibitors. ACTA PHARMACEUTICA (ZAGREB, CROATIA) 2021; 71:33-56. [PMID: 32697741 DOI: 10.2478/acph-2021-0002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/08/2020] [Indexed: 01/19/2023]
Abstract
Interleukin-2 (IL-2) is involved in the activation and differentiation of T-helper cells. Uncontrolled activated T cells play a key role in the pathophysiology by stimulating inflammation and autoimmune diseases like arthritis, psoriasis and Crohn's disease. T cells activation can be suppressed either by preventing IL-2 production or blocking the IL-2 interaction with its receptor. Hence, IL-2 is now emerging as a target for novel therapeutic approaches in several autoimmune disorders. This study was carried out to set up an effective virtual screening (VS) pipeline for IL-2. Four docking/scoring approaches (FRED, MOE, GOLD and Surflex-Dock) were compared in the re-docking process to test their performance in producing correct binding modes of IL-2 inhibitors. Surflex-Dock and FRED were the best in predicting the native pose in its top-ranking position. Shapegauss and CGO scoring functions identified the known inhibitors of IL-2 in top 1, 5 and 10 % of library and differentiated binders from non-binders efficiently with average AUC of > 0.9 and > 0.7, resp. The applied docking protocol served as a basis for the VS of a large database that will lead to the identification of more active compounds against IL-2.
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12
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Chen X, Huang Y, Wang D, Dong N, Du X. PJ34, a PARP1 inhibitor, attenuates acute allograft rejection after murine heart transplantation via regulating the CD4 + T lymphocyte response. Transpl Int 2021; 34:561-571. [PMID: 33368686 DOI: 10.1111/tri.13809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 10/16/2020] [Accepted: 12/21/2020] [Indexed: 02/06/2023]
Abstract
Acute allografts rejection is the most important factor causing allograft disability for many patients undergoing organ transplantation. PJ34, which is a specific inhibitor of poly(ADP-ribose) polymerase 1, is involved in immune regulation, may be effective in preventing acute cardiac rejection. We performed the models of abdominal heterotopic heart transplantation. PJ34 was injected intraperitoneally daily (20 mg/kg/day) starting the day after surgery. The severity of rejection was determined by histology. The mRNA expression levels of cytokines and transcription factors in the grafts were measured by quantitative polymerase chain reaction (qPCR). The proportion and number of T-cell subpopulations in the spleens were analyzed by flow cytometry. In vitro, the effect of PJ34 on allogeneic responses was investigated. We found treatment with PJ34 prolonged allograft survival compared with normal saline treatment. Compared with the control group, PJ34 treatment reduced the proportion of CD4+ IFN-γ+ and CD4+ IL-17A+ cells and increased the percent of CD4+ IL-4+ and CD4+ Foxp3+ cells in the spleens. In vitro, PJ34 treatment significantly inhibited the mRNA levels of IFN-γ and IL-17A and promoted the mRNA levels of TGF-β and FOXP-3 in activated CD4+ T cells. Modulating the CD4+ T lymphocyte response with PJ34 could attenuate acute allografts rejection after murine heart transplantation. These findings indicate that PARP1 may be a promising therapeutic target to attenuate acute cardiac allograft rejection.
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Affiliation(s)
- Xing Chen
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yajun Huang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dashuai Wang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Nianguo Dong
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xinling Du
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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13
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Legaz I, Bernardo MV, Alfaro R, Martínez-Banaclocha H, Galián JA, Jimenez-Coll V, Boix F, Mrowiec A, Salmeron D, Botella C, Parrado A, Moya-Quiles MR, Minguela A, Llorente S, de la Peña-Moral J, Muro M. PCR Array Technology in Biopsy Samples Identifies Up-Regulated mTOR Pathway Genes as Potential Rejection Biomarkers After Kidney Transplantation. Front Med (Lausanne) 2021; 8:547849. [PMID: 33681239 PMCID: PMC7927668 DOI: 10.3389/fmed.2021.547849] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 01/27/2021] [Indexed: 12/12/2022] Open
Abstract
Background: Antibody-mediated rejection (AMR) is the major cause of kidney transplant rejection. The donor-specific human leukocyte antigen (HLA) antibody (DSA) response to a renal allograft is not fully understood yet. mTOR complex has been described in the accommodation or rejection of transplants and integrates responses from a wide variety of signals. The aim of this study was to analyze the expression of the mTOR pathway genes in a large cohort of kidney transplant patients to determine its possible influence on the transplant outcome. Methods: A total of 269 kidney transplant patients monitored for DSA were studied. The patients were divided into two groups, one with recipients that had transplant rejection (+DSA/+AMR) and a second group of recipients without rejection (+DSA/-AMR and -DSA/-AMR, controls). Total RNA was extracted from kidney biopsies and reverse transcribed to cDNA. Human mTOR-PCR array technology was used to determine the expression of 84 mTOR pathway genes. STRING and REVIGO software were used to simulate gene to gene interaction and to assign a molecular function. Results: The studied groups showed a different expression of the mTOR pathway related genes. Recipients that had transplant rejection showed an over-expressed transcript (≥5-fold) of AKT1S1, DDIT4, EIF4E, HRAS, IGF1, INS, IRS1, PIK3CD, PIK3CG, PRKAG3, PRKCB (>12-fold), PRKCG, RPS6KA2, TELO2, ULK1, and VEGFC, compared with patients that did not have rejection. AKT1S1 transcripts were more expressed in +DSA/-AMR biopsies compared with +DSA/+AMR. The main molecular functions of up-regulated gene products were phosphotransferase activity, insulin-like grown factor receptor and ribonucleoside phosphate binding. The group of patients with transplant rejection also showed an under-expressed transcript (≥5-fold) of VEGFA (>15-fold), RPS6, and RHOA compared with the group without rejection. The molecular function of down-regulated gene products such as protein kinase activity and carbohydrate derivative binding proteins was also analyzed. Conclusions: We have found a higher number of over-expressed mTOR pathway genes than under-expressed ones in biopsies from rejected kidney transplants (+DSA/+AMR) with respect to controls. In addition to this, the molecular function of both types of transcripts (over/under expressed) is different. Therefore, further studies are needed to determine if variations in gene expression profiles can act as predictors of graft loss, and a better understanding of the mechanisms of action of the involved proteins would be necessary.
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Affiliation(s)
- Isabel Legaz
- Department of Legal and Forensic Medicine, Faculty of Medicine, Biomedical Research Institute (IMIB), University of Murcia, Murcia, Spain
| | - María Victoria Bernardo
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Rafael Alfaro
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Helios Martínez-Banaclocha
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Jose Antonio Galián
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Victor Jimenez-Coll
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Francisco Boix
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Anna Mrowiec
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Diego Salmeron
- Departamento de Ciencias Sociosanitarias, Universidad de Murcia, Murcia, Spain
- Centro de Investigación Biomédica en Red (CIBER) Epidemiología y Salud Pública (CIBERESP), Murcia, Spain
- Instituto Murciano de Investigacion Biomédica-Arrixaca, Murcia, Spain
| | - Carmen Botella
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Antonio Parrado
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - María Rosa Moya-Quiles
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Alfredo Minguela
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Santiago Llorente
- Department of Nephrology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Jesús de la Peña-Moral
- Department of Pathology Services, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Manuel Muro
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
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14
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Boix F, Legaz I, Minhas A, Alfaro R, Jiménez–Coll V, Mrowiec A, Martínez–Banaclocha H, Galián JA, Botella C, Moya–Quiles MR, Sanchez–Bueno F, Robles R, de la Peña–Moral J, Ramirez P, Pons JA, Minguela A, Muro M. Identification of peripheral CD154 + T cells and HLA-DRB1 as biomarkers of acute cellular rejection in adult liver transplant recipients. Clin Exp Immunol 2021; 203:315-328. [PMID: 33025622 PMCID: PMC7806417 DOI: 10.1111/cei.13533] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 09/29/2020] [Accepted: 09/29/2020] [Indexed: 12/16/2022] Open
Abstract
Decreasing graft rejection and increasing graft and patient survival are great challenges facing liver transplantation (LT). Different T cell subsets participate in the acute cellular rejection (ACR) of the allograft. Cell-mediated immunity markers of the recipient could help to understand the mechanisms underlying acute rejection. This study aimed to analyse different surface antigens on T cells in a cohort of adult liver patients undergoing LT to determine the influence on ACR using multi-parametric flow cytometry functional assay. Thirty patients were monitored at baseline and during 1 year post-transplant. Two groups were established, with (ACR) and without (NACR) acute cellular rejection. Leukocyte, total lymphocyte, percentages of CD4+ CD154+ and CD8+ CD154+ T cells, human leukocyte antigen (HLA) mismatch between recipient-donor and their relation with ACR as well as the acute rejection frequencies were analysed. T cells were stimulated with concanavalin A (Con-A) and surface antigens were analysed by fluorescence activated cell sorter (FACS) analysis. A high percentage of CD4+ CD154+ T cells (P = 0·001) and a low percentage of CD8+ CD154+ T cells (P = 0·002) at baseline were statistically significant in ACR. A receiver operating characteristic analysis determined the cut-off values capable to stratify patients at high risk of ACR with high sensitivity and specificity for CD4+ CD154+ (P = 0·001) and CD8+ CD154+ T cells (P = 0·002). In logistic regression analysis, CD4+ CD154+ , CD8+ CD154+ and HLA mismatch were confirmed as independent risk factors to ACR. Post-transplant percentages of both T cell subsets were significantly higher in ACR, despite variations compared to pretransplant. These findings support the selection of candidates for LT based on the pretransplant percentages of CD4+ CD154+ and CD8+ CD154+ T cells in parallel with other transplant factors.
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Affiliation(s)
- F. Boix
- Haematology ServiceUniversity Hospital of SalamancaResearch Biomedical Institute of Salamanca (IBSAL)SalamancaSpain
| | - I. Legaz
- Department of Legal and Forensic MedicineFaculty of MedicineBiomedical Research Institute of Murcia (IMIB)Regional Campus of International Excellence ‘Campus Mare Nostrum’University of MurciaMurciaSpain
| | - A. Minhas
- Clinical Transplantation LaboratoryBarts Health NHS TrustLondonUK
| | - R. Alfaro
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - V. Jiménez–Coll
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - A. Mrowiec
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - H. Martínez–Banaclocha
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - J. A. Galián
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - C. Botella
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - M. R. Moya–Quiles
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - F. Sanchez–Bueno
- SurgeryUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - R. Robles
- SurgeryUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - J. de la Peña–Moral
- PathologyUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - P. Ramirez
- SurgeryUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - J. A. Pons
- Digestive Medicine ServicesUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - A. Minguela
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - M. Muro
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
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15
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Peyster EG, Wang C, Ishola F, Remeniuk B, Hoyt C, Feldman MD, Margulies KB. In Situ Immune Profiling of Heart Transplant Biopsies Improves Diagnostic Accuracy and Rejection Risk Stratification. JACC Basic Transl Sci 2020; 5:328-340. [PMID: 32368693 PMCID: PMC7188920 DOI: 10.1016/j.jacbts.2020.01.015] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 01/24/2020] [Accepted: 01/24/2020] [Indexed: 12/15/2022]
Abstract
Recognizing that guideline-directed histologic grading of endomyocardial biopsy tissue samples for rejection surveillance has limited diagnostic accuracy, quantitative, in situ characterization was performed of several important immune cell types in a retrospective cohort of clinical endomyocardial tissue samples. Differences between cases were identified and were grouped by histologic grade versus clinical rejection trajectory, with significantly increased programmed death ligand 1+, forkhead box P3+, and cluster of differentiation 68+ cells suppressed in clinically evident rejections, especially cases with marked clinical-histologic discordance. Programmed death ligand 1+, forkhead box P3+, and cluster of differentiation 68+ cell proportions are also significantly higher in "never-rejection" when compared with "future-rejection." These findings suggest that in situ immune modulators regulate the severity of cardiac allograft rejection.
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Affiliation(s)
- Eliot G Peyster
- Cardiovascular Research Institute, University of Pennsylvania, Philadelphia, Pennsylvania
| | | | | | | | | | - Michael D Feldman
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Kenneth B Margulies
- Cardiovascular Research Institute, University of Pennsylvania, Philadelphia, Pennsylvania
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16
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Naamani O, Riff R, Chaimovitz C, Mazar J, Douvdevani A. Pharmacological preconditioning with adenosine A 1 receptor agonist induces immunosuppression and improves graft survival in novel allogeneic transplantation models. Sci Rep 2020; 10:4464. [PMID: 32161272 PMCID: PMC7066190 DOI: 10.1038/s41598-020-60224-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 02/10/2020] [Indexed: 12/19/2022] Open
Abstract
Adenosine is widely known as a potent modulator of innate and acquired immunity. It is released during transplants, and acts on four subtype receptors. In previous studies, we demonstrated that pharmacological preconditioning (PPC), pre-administration of the selective A1 receptor (A1R) agonist led to A1R desensitization, is followed by upregulation of the adenosine A2A receptor. This immunosuppressive effect resulted in lymphopenia, and it reduced T-cell reactivity. The aim of the current study was to challenge the immunosuppressive effects of A1R-PPC in models of allogeneic grafts. PPC mice were treated by intraperitoneal injection using specific adenosine A1R agonist 24 h and 12 h before starting any procedure. We challenged our method in novel allogeneic muscle and skin grafts models. Mice and grafts were assessed by complete blood counts, MLR from PPC splenocytes, and pathological evaluation. We found a significant reduction in WBC and lymphocyte counts in PPC-treated mice. Two-way MLR with splenocytes from PPC grafted mice showed decreased proliferation and anergy. Histology of PPC allogeneic grafts revealed profoundly less infiltration and even less muscle necrosis compared to vehicle treated allografts. Similar results observed in PPC skin transplantation. To conclude, PPC moderated graft rejection in separate allogeneic challenges, and reduced lymphocytes infiltration and ischemic damage.
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Affiliation(s)
- Oshri Naamani
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev and Soroka University Medical Center, Beer-Sheva, Israel.
- Department of Science, Hemdat Hadarom, College of Education, Netivot, Israel.
| | - Reut Riff
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev and Soroka University Medical Center, Beer-Sheva, Israel
| | - Cidio Chaimovitz
- Department of Nephrology, Faculty of Health Sciences, Ben-Gurion University of the Negev and Soroka University Medical Center, Beer-Sheva, Israel
| | - Julia Mazar
- Laboratory of Hematology, Faculty of Health Sciences, Ben-Gurion University of the Negev and Soroka University Medical Center, Beer-Sheva, Israel
| | - Amos Douvdevani
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev and Soroka University Medical Center, Beer-Sheva, Israel
- Department of Nephrology, Faculty of Health Sciences, Ben-Gurion University of the Negev and Soroka University Medical Center, Beer-Sheva, Israel
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17
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Han ES, Na GH, Choi HJ, You YK, Kim DG. Effectiveness of Perioperative Immunologic Markers Monitoring for Predicting Early Acute Cellular Rejection After Living Donor Liver Transplantation. Transplant Proc 2019; 51:2648-2654. [PMID: 31477418 DOI: 10.1016/j.transproceed.2019.03.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 02/20/2019] [Accepted: 03/04/2019] [Indexed: 11/25/2022]
Abstract
BACKGROUND The objective of this study was to determine whether perioperative immunologic markers monitoring could predict early acute cellular rejection (ACR) after living donor liver transplantation (LDLT). MATERIALS AND METHODS From September 2010 to June 2013, a total of 172 patients underwent LDLT at our transplant center. Of them, 26 patients were excluded because of infection. We retrospectively reviewed the remaining 146 patients. CD4 lymphocyte activity, T cell subsets test, and serum cytokine panel were checked on the day before transplantation and at 20 days after transplantation. These patients were divided into 3 groups: 1. normal liver function test (LFT) group; 2. increased LFT without rejection group; and 3. early ACR group. We excluded the increased LFT without rejection group in order to rule out multiple factors influencing immunologic factors. RESULTS CD4 lymphocyte activity (P = .004) was significantly increased while CD4+/CD25+/FOXP3+ cells (P < .001) and interleukin (IL)-17 (P = .002) levels were significantly decreased during the perioperative period. Pretransplant IL-6 (P = .014) and IL-17 (P = .029) levels in the early ACR group were significantly lower than those in the normal LFT group. The proportion of patients with increased IL-6 during perioperative period in the early ACR group was higher than that in the normal LFT group, although the difference was not statistically significant (P = .065). CONCLUSION Our results suggest that IL-6 and IL-17 levels are associated with early ACR in LDLT patients. However, whether monitoring perioperative immunologic markers could predict early ACR remains unclear. Further prospective studies are needed to reach a definite conclusion.
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Affiliation(s)
- E S Han
- Department of Surgery, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Buchoen, Korea
| | - G H Na
- Department of Surgery, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Buchoen, Korea.
| | - H J Choi
- Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Y K You
- Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - D G Kim
- Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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18
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Zhang J, Zhang H, Wang Z, Yang H, Chen H, Cheng H, Zhou J, Zheng M, Tan R, Gu M. BTLA suppress acute rejection via regulating TCR downstream signals and cytokines production in kidney transplantation and prolonged allografts survival. Sci Rep 2019; 9:12154. [PMID: 31434927 PMCID: PMC6704067 DOI: 10.1038/s41598-019-48520-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 08/01/2019] [Indexed: 12/23/2022] Open
Abstract
Acute rejection is a major risk for renal transplant failure. During this adverse process, activated T cells are considered the main effectors. Recently, B and T lymphocyte attenuator (BTLA), a member of the CD28 family receptor, was reported to be a novel inhibitory regulator of T cell activation in heart and pancreatic allograft rejection. Due to the similarity of acute rejection pathways among different organs, we hypothesized that BTLA might play a role in acute rejection of kidney transplant. In renal transplant patients, we observed that BTLA expression was significantly decreased in peripheral CD3+ T lymphocytes of biopsy-proven acute rejection (BPAR) recipients compared with control patients with stable transplanted kidney functions. Remarkably, overexpression of BTLA in the rat model was found to significantly inhibit the process of acute rejection, regulate the postoperative immune status, and prolong allograft survival. BTLA overexpression significantly suppressed IL-2 and IFN-γ production and increased IL-4 and IL-10 production both in vivo and in vitro. Moreover, vital factors in T-cell signaling pathways, including mitogen-associated protein kinases (MAPK), nuclear factor-kappa B (NF-κB) and nuclear factor of activated T cells (NFAT), were also significantly repressed by BTLA overexpression. Therefore, BTLA can suppress acute rejection and regulate allogeneic responses of kidney transplant by regulating TCR downstream signals and inflammatory cytokines production to improve allografts outcomes.
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Affiliation(s)
- Jiayi Zhang
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Hengcheng Zhang
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Zijie Wang
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Haiwei Yang
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Hao Chen
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Hong Cheng
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Jiajun Zhou
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Ming Zheng
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Ruoyun Tan
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Min Gu
- Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China.
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Okimoto A, Yamamoto R, Hirose J, Shimatani K, Koshika T, Maeda M, Hattori K, Morokata T. ASP1126, a Novel Sphingosine-1-Phosphate-Selective Agonist With a Favorable Safety Profile, Prolongs Allograft Survival in Rats and Nonhuman Primates in Combination With Tacrolimus With a Broad Safety Margin for Bradycardia. Transplant Proc 2019; 51:2081-2098. [PMID: 31399186 DOI: 10.1016/j.transproceed.2019.05.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 05/07/2019] [Indexed: 11/28/2022]
Abstract
Sphingosine-1-phosphate (S1P) is a biologically active sphingolipid that acts through the members of a family of 5 G protein-coupled receptors (S1P1 to S1P5). Among these, S1P1 is a major regulator of lymphocyte trafficking. Fingolimod, whose active metabolite, fingolimod phosphate, acts as a nonselective S1P-receptor agonist, exerts its immunomodulatory effect, at least in part, by regulating lymphocyte trafficking via downregulation of S1P1 expression on lymphocytes. Here, we describe the pharmacologic profile of a novel S1P1 agonist, ASP1126. ASP1126 preferentially activated S1P1 compared to S1P3 in rat and human guanosine-5'-(γ-thio)-triphosphate (GTPγS) assays. Oral single administration of ASP1126 decreased the number of peripheral lymphocytes and repeated dosing showed a cumulative effect on lymphopenia in both rats and monkeys. ASP1126 prolonged allograft survival in a rat heterotopic heart transplantation model in combination with a subtherapeutic dose of tacrolimus that was independent of drug-drug interactions. In addition, in nonhuman primate (NHP) renal transplantation, pretreatment with ASP1126 reduced not only the number of naive T cells and central memory T cells but also effector memory T cells in the peripheral blood, all of which could contribute to acute graft rejection and prolonged allograft survival in combination with tacrolimus. Further, we confirmed that ASP1126 has a broad ranging safety margin with respect to its effect on lung weight in rats and bradycardia in NHPs, which were the adverse events found in clinical studies of fingolimod. ASP1126 with improved safety profile has the potential to be an adjunct therapy in combination with tacrolimus in clinical transplantation.
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Affiliation(s)
- Akira Okimoto
- Drug Discovery Research, Astellas Pharma Inc, Ibaraki, Japan.
| | - Rie Yamamoto
- Drug Discovery Research, Astellas Pharma Inc, Ibaraki, Japan
| | - Jun Hirose
- Drug Discovery Research, Astellas Pharma Inc, Ibaraki, Japan
| | | | | | - Masashi Maeda
- Drug Discovery Research, Astellas Pharma Inc, Ibaraki, Japan
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20
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Longoni A, Knežević L, Schepers K, Weinans H, Rosenberg AJWP, Gawlitta D. The impact of immune response on endochondral bone regeneration. NPJ Regen Med 2018; 3:22. [PMID: 30510772 PMCID: PMC6265275 DOI: 10.1038/s41536-018-0060-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 10/26/2018] [Indexed: 12/29/2022] Open
Abstract
Tissue engineered cartilage substitutes, which induce the process of endochondral ossification, represent a regenerative strategy for bone defect healing. Such constructs typically consist of multipotent mesenchymal stromal cells (MSCs) forming a cartilage template in vitro, which can be implanted to stimulate bone formation in vivo. The use of MSCs of allogeneic origin could potentially improve the clinical utility of the tissue engineered cartilage constructs in three ways. First, ready-to-use construct availability can speed up the treatment process. Second, MSCs derived and expanded from a single donor could be applied to treat several patients and thus the costs of the medical interventions would decrease. Finally, it would allow more control over the quality of the MSC chondrogenic differentiation. However, even though the envisaged clinical use of allogeneic cell sources for bone regeneration is advantageous, their immunogenicity poses a significant obstacle to their clinical application. The aim of this review is to increase the awareness of the role played by immune cells during endochondral ossification, and in particular during regenerative strategies when the immune response is altered by the presence of implanted biomaterials and/or cells. More specifically, we focus on how this balance between immune response and bone regeneration is affected by the implantation of a cartilaginous tissue engineered construct of allogeneic origin.
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Affiliation(s)
- A Longoni
- 1Department of Oral and Maxillofacial Surgery & Special Dental Care, University Medical Center Utrecht, Utrecht University, Utrecht, G05.222, PO Box 85500, 3508 GA The Netherlands.,Regenerative Medicine Center Utrecht, 3584 CT Utrecht, The Netherlands
| | - L Knežević
- 1Department of Oral and Maxillofacial Surgery & Special Dental Care, University Medical Center Utrecht, Utrecht University, Utrecht, G05.222, PO Box 85500, 3508 GA The Netherlands.,3Faculty of Health Sciences, University of Bristol, Biomedical Sciences Building, Bristol, BS8 1TD UK
| | - K Schepers
- 4Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, 2300RC Leiden, The Netherlands
| | - H Weinans
- 5Department of Orthopaedics, University Medical Center Utrecht, Utrecht University, 3508 GA Utrecht, The Netherlands.,6Department of Rheumatology, University Medical Center Utrecht, Utrecht University, 3584CX Utrecht, The Netherlands.,7Department of Biomechanical Engineering, Delft University of Technology, 2628CD Delft, The Netherlands
| | - A J W P Rosenberg
- 1Department of Oral and Maxillofacial Surgery & Special Dental Care, University Medical Center Utrecht, Utrecht University, Utrecht, G05.222, PO Box 85500, 3508 GA The Netherlands
| | - D Gawlitta
- 1Department of Oral and Maxillofacial Surgery & Special Dental Care, University Medical Center Utrecht, Utrecht University, Utrecht, G05.222, PO Box 85500, 3508 GA The Netherlands.,Regenerative Medicine Center Utrecht, 3584 CT Utrecht, The Netherlands
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21
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Rodriguez-Barbosa JI, Ferreras MC, Buhler L, Jones ND, Schneider P, Perez-Simon JA, Del Rio ML. Therapeutic implications of NK cell regulation of allogeneic CD8 T cell-mediated immune responses stimulated through the direct pathway of antigen presentation in transplantation. MAbs 2018; 10:1030-1044. [PMID: 30036156 PMCID: PMC6204794 DOI: 10.1080/19420862.2018.1502127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Natural killer (NK) cells are a population of innate type I lymphoid cells essential for early anti-viral responses and are known to modulate the course of humoral and cellular-mediated T cell responses. We assessed the role of NK cells in allogeneic CD8 T cell-mediated responses in an immunocompetent mouse model across an MHC class I histocompatibility barrier to determine its impact in therapeutic clinical interventions with polyclonal or monoclonal antibodies (mAbs) targeting lymphoid cells in transplantation. The administration of an NK cell depleting antibody to either CD8 T cell replete or CD8 T cell-depleted naïve C57BL/6 immunocompetent mice accelerated graft rejection. This accelerated rejection response was associated with an in vivo increased cytotoxic activity of CD8 T cells against bm1 allogeneic hematopoietic cells and bm1 skin allografts. These findings show that NK cells were implicated in the control host anti-donor cytotoxic responses, likely by competing for common cell growth factors in both CD8 T cell replete and CD8 T cell-depleted mice, the latter reconstituting in response to lymphopenia. Our data calls for precaution in solid organ transplantation under tolerogenic protocols involving extensive depletion of lymphocytes. These pharmacological biologics with depleting properties over NK cells may accelerate graft rejection and promote aggressive CD8 T cell cytotoxic alloresponses refractory to current immunosuppression.
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Affiliation(s)
- J I Rodriguez-Barbosa
- a Transplantation Immunobiology Section , University of León , Leon , Spain.,h Acción Estratégica en Salud , Consorcio CIBER-ONC, Seville, Spain
| | - M C Ferreras
- b Department of Animal Health, Mountain Livestock Institute (CSIC), School of Veterinary Sciences , University of Leon , Leon , Spain
| | - L Buhler
- c Visceral and Transplantation Surgery, Department of Surgery , University Hospitals of Geneva and Faculty of Medicine , Geneva , Switzerland
| | - N D Jones
- d MRC Centre of Immune Regulation, School of Immunity and Infection, Medical School , University of Birmingham , Birmingham , United Kingdom
| | - P Schneider
- e Department of Biochemistry , University of Lausanne , Epalinges , Switzerland
| | - J A Perez-Simon
- f Department of Hematology , University Hospital Virgen del Rocio/Institute of Biomedicine (IBIS/CSIC) , Sevilla , Spain.,h Acción Estratégica en Salud , Consorcio CIBER-ONC, Seville, Spain
| | - M L Del Rio
- a Transplantation Immunobiology Section , University of León , Leon , Spain.,g Leon Regional Transplantation Coordination Center , Leon University Hospital , Leon , Spain.,h Acción Estratégica en Salud , Consorcio CIBER-ONC, Seville, Spain
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22
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T-bet or IFNγ Neutralization for Blocking Islet Allograft Rejection? Transplantation 2018; 102:1409-1410. [PMID: 29781951 DOI: 10.1097/tp.0000000000002262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Alelign T, Ahmed MM, Bobosha K, Tadesse Y, Howe R, Petros B. Kidney Transplantation: The Challenge of Human Leukocyte Antigen and Its Therapeutic Strategies. J Immunol Res 2018; 2018:5986740. [PMID: 29693023 PMCID: PMC5859822 DOI: 10.1155/2018/5986740] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 11/30/2017] [Accepted: 12/03/2017] [Indexed: 12/16/2022] Open
Abstract
Kidney transplantation remains the treatment of choice for end-stage renal failure. When the immune system of the recipient recognizes the transplanted kidney as a foreign object, graft rejection occurs. As part of the host immune defense mechanism, human leukocyte antigen (HLA) is a major challenge for graft rejection in transplantation therapy. The impact of HLA mismatches between the donor and the potential recipient prolongs the time for renal transplantation therapy, tethered to dialysis, latter reduces graft survival, and increases mortality. The formation of pretransplant alloantibodies against HLA class I and II molecules can be sensitized through exposures to blood transfusions, prior transplants, and pregnancy. These preformed HLA antibodies are associated with rejection in kidney transplantation. On the other hand, the development of de novo antibodies may increase the risk for acute and chronic rejections. Allograft rejection results from a complex interplay involving both the innate and the adaptive immune systems. Thus, further insights into the mechanisms of tissue rejection and the risk of HLA sensitization is crucial in developing new therapies that may blunt the immune system against transplanted organs. Therefore, the purpose of this review is to highlight facts about HLA and its sensitization, various mechanisms of allograft rejection, the current immunosuppressive approaches, and the directions for future therapy.
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Affiliation(s)
- Tilahun Alelign
- College of Natural Sciences, Department of Microbial, Cellular and Molecular Biology, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
- Department of Biology, Debre Berhan University, P.O. Box 445, Debre Berhan, Ethiopia
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Momina M. Ahmed
- St. Paul's Hospital Millennium Medical College and Addis Ababa University, Addis Ababa, Ethiopia
| | - Kidist Bobosha
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Yewondwossen Tadesse
- School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Rawleigh Howe
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Beyene Petros
- College of Natural Sciences, Department of Microbial, Cellular and Molecular Biology, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
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24
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Zhan Y, Han Y, Sun H, Liang T, Zhang C, Song J, Hou G. Down-regulating cyclin-dependent kinase 9 of alloreactive CD4+ T cells prolongs allograft survival. Oncotarget 2018; 7:24983-94. [PMID: 27102157 PMCID: PMC5041884 DOI: 10.18632/oncotarget.8804] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 04/06/2016] [Indexed: 01/27/2023] Open
Abstract
CDK9 (Cyclin-dependent kinase 9)/Cyclin T1/RNA polymerase II pathway has been demonstrated to promote the development of several inflammatory diseases, such as arthritis or atherosclerosis, however, its roles in allotransplantation rejection have not been addressed. Here, we found that CDK9/Cyclin T1 were apparently up-regulated in the allogeneic group, which was positively correlated with allograft damage. CDK9 was inhibited obviously in naive splenic CD4+ T cells treated 6 h with 3 μM PHA767491 (a CDK9 inhibitor), and adoptive transfer of these CD4+ T cells into allografted SCID mice resulted in prolonged survival compared with the group without PHA767491 pretreated. Decelerated rejection was correlated with enhanced IL-4 and IL-10 production and with decreased IFN-γ production by alloreactive T cells. More interestingly, we found that CDK942, not CDK955, was high expressed in allorejection group, which could be prominently dampened with PHA767491 treatment. The expression of CDK942 was consistent with its downstream molecule RNA polymerase II. Altogether, our findings revealed the crucial role of CDK9/Cyclin T1/Pol II pathway in promoting allorejection at multiple levels and may provide a new approach for transplantation tolerance induction through targeting CDK9.
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Affiliation(s)
- Yang Zhan
- Laboratory of Experimental Teratology, Ministry of Education and Institute of Experimental Nuclear Medicine, School of Medicine, Shandong University, Jinan, Shandong, China
| | - Yeming Han
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Department of Cardiology, Qilu Hospital, Shandong University, Jinan, Shandong, China
| | - Hukui Sun
- Laboratory of Experimental Teratology, Ministry of Education and Institute of Experimental Nuclear Medicine, School of Medicine, Shandong University, Jinan, Shandong, China
| | - Ting Liang
- Laboratory of Experimental Teratology, Ministry of Education and Institute of Experimental Nuclear Medicine, School of Medicine, Shandong University, Jinan, Shandong, China
| | - Chao Zhang
- Laboratory of Experimental Teratology, Ministry of Education and Institute of Experimental Nuclear Medicine, School of Medicine, Shandong University, Jinan, Shandong, China
| | - Jing Song
- Laboratory of Experimental Teratology, Ministry of Education and Institute of Experimental Nuclear Medicine, School of Medicine, Shandong University, Jinan, Shandong, China
| | - Guihua Hou
- Laboratory of Experimental Teratology, Ministry of Education and Institute of Experimental Nuclear Medicine, School of Medicine, Shandong University, Jinan, Shandong, China
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Abstract
PURPOSE OF REVIEW Hyperlipidemia is a comorbidity affecting a significant number of transplant patients despite treatment with cholesterol lowering drugs. Recently, it has been shown that hyperlipidemia can significantly alter T-cell responses to cardiac allografts in mice, and graft rejection is accelerated in dyslipidemic mice. Here, we review recent advances in our understanding of hyperlipidemia in graft rejection. RECENT FINDINGS Hyperlipidemic mice have significant increases in serum levels of proinflammatory cytokines, and neutralization of interleukin 17 (IL-17) slows graft rejection, suggesting that IL-17 production by Th17 cells was necessary but not sufficient for rejection. Hyperlipidemia also causes an increase in alloreactive T-cell responses prior to antigen exposure. Analysis of peripheral tolerance mechanisms indicated that this was at least in part due to alterations in FoxP3 T cells that led to reduced Treg function and the expansion of FoxP3 CD4 T cells expressing low levels of CD25. Functionally, alterations in Treg function prevented the ability to induce operational tolerance to fully allogeneic heart transplants through costimulatory-molecule blockade, a strategy that requires Tregs. SUMMARY These findings highlight the importance of considering the contribution of inflammatory comorbidities to cardiac allograft rejection, and point to the potential importance of managing hyperlipidemia in the transplant population.
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26
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Abstract
Mechanisms of rejection, new pharmacologic approaches, and genomic medicine are major foci for current research in transplantation. It is hoped that these new agents and personalized immunosuppression will provide for less toxic regimens that are effective in preventing both acute and chronic allograft rejection. Until new agents are available, practitioners must use various combinations of currently approved agents to find the best regimens for improved long-term outcomes.
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Affiliation(s)
- Curtis D Holt
- Clinical Research Program, UCLA Department of Surgery, Dumont-UCLA Transplant Center, David Geffen School of Medicine at UCLA, 650 CE Young Drive South, Room 77-123CHS, Los Angeles, CA 90095-7054, USA.
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27
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Uehara M, McGrath MM, Ohori S, Solhjou Z, Banouni N, Routray S, Evans C, DiNitto JP, Elkhal A, Turka LA, Strom TB, Tullius SG, Winkler DG, Azzi J, Abdi R. Regulation of T cell alloimmunity by PI3Kγ and PI3Kδ. Nat Commun 2017; 8:951. [PMID: 29038423 PMCID: PMC5643371 DOI: 10.1038/s41467-017-00982-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 08/10/2017] [Indexed: 01/04/2023] Open
Abstract
Phosphatidylinositol-3-kinases (PI3K) γ and δ are preferentially enriched in leukocytes, and defects in these signaling pathways have been shown to impair T cell activation. The effects of PI3Kγ and PI3Kδ on alloimmunity remain underexplored. Here, we show that both PI3Kγ−/− and PI3KδD910A/D910A mice receiving heart allografts have suppression of alloreactive T effector cells and delayed acute rejection. However, PI3Kδ mutation also dampens regulatory T cells (Treg). After treatment with low dose CTLA4-Ig, PI3Kγ−/−, but not PI3ΚδD910A/D910A, recipients exhibit indefinite prolongation of heart allograft survival. PI3KδD910A/D910A Tregs have increased apoptosis and impaired survival. Selective inhibition of PI3Kγ and PI3Kδ (using PI3Kδ and dual PI3Kγδ chemical inhibitors) shows that PI3Kγ inhibition compensates for the negative effect of PI3Kδ inhibition on long-term allograft survival. These data serve as a basis for future PI3K-based immune therapies for transplantation. Phosphatidylinositol-3-kinases (PI3K) γ and δ are key regulators of T cell signaling. Here the author show, using mouse heart allograft transplantation models, that PI3Kγ or PI3Kδ deficiency prolongs graft survival, but selective inhibition of PI3Kγ or PI3Kδ reveals alternative transplant survival outcomes post CTLA4-Ig treatment.
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Affiliation(s)
- Mayuko Uehara
- Transplantation Research Center, Renal Division, Brigham and Women's Hospital and Harvard Medical School, 221 Longwood Avenue, Boston, MA, 02115, USA
| | - Martina M McGrath
- Transplantation Research Center, Renal Division, Brigham and Women's Hospital and Harvard Medical School, 221 Longwood Avenue, Boston, MA, 02115, USA
| | - Shunsuke Ohori
- Transplantation Research Center, Renal Division, Brigham and Women's Hospital and Harvard Medical School, 221 Longwood Avenue, Boston, MA, 02115, USA
| | - Zhabiz Solhjou
- Transplantation Research Center, Renal Division, Brigham and Women's Hospital and Harvard Medical School, 221 Longwood Avenue, Boston, MA, 02115, USA
| | - Naima Banouni
- Transplantation Research Center, Renal Division, Brigham and Women's Hospital and Harvard Medical School, 221 Longwood Avenue, Boston, MA, 02115, USA
| | - Sujit Routray
- Transplantation Research Center, Renal Division, Brigham and Women's Hospital and Harvard Medical School, 221 Longwood Avenue, Boston, MA, 02115, USA
| | - Catherine Evans
- Infinity Pharmaceuticals, Inc 784 Memorial Drive, Cambridge, MA, 02139, USA
| | - Jonathan P DiNitto
- Infinity Pharmaceuticals, Inc 784 Memorial Drive, Cambridge, MA, 02139, USA
| | - Abdallah Elkhal
- Division of Transplant Surgery and Transplant Surgery Research Laboratory, Brigham and Women's Hospital and Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Laurence A Turka
- Center for Transplantation Sciences, Massachusetts General Hospital/Harvard Medical School, Massachusetts Massachusetts General Hospital-East Charlestown Navy Yard Building 149, 13th Street, Charlestown, MA, 02129-2020, USA
| | - Terry B Strom
- The Transplant Institute, Beth Israel Deaconess Medical Center/Harvard Medical School, 330 Brookline Avenue, E/CLS Room 607, Boston, MA, 02215, USA
| | - Stefan G Tullius
- Division of Transplant Surgery and Transplant Surgery Research Laboratory, Brigham and Women's Hospital and Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - David G Winkler
- Infinity Pharmaceuticals, Inc 784 Memorial Drive, Cambridge, MA, 02139, USA
| | - Jamil Azzi
- Transplantation Research Center, Renal Division, Brigham and Women's Hospital and Harvard Medical School, 221 Longwood Avenue, Boston, MA, 02115, USA
| | - Reza Abdi
- Transplantation Research Center, Renal Division, Brigham and Women's Hospital and Harvard Medical School, 221 Longwood Avenue, Boston, MA, 02115, USA.
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Reddy KE, Jeong JY, Lee Y, Lee HJ, Kim MS, Kim DW, Jung HJ, Choe C, Oh YK, Lee SD. Deoxynivalenol- and zearalenone-contaminated feeds alter gene expression profiles in the livers of piglets. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2017; 31:595-606. [PMID: 28823120 PMCID: PMC5838333 DOI: 10.5713/ajas.17.0466] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 07/11/2017] [Accepted: 08/11/2017] [Indexed: 02/04/2023]
Abstract
Objective The Fusarium mycotoxins of deoxynivalenol (DON) and zerolenone (ZEN) cause health hazards for both humans and farm animals. Therefore, the main intention of this study was to reveal DON and ZEN effects on the mRNA expression of pro-inflammatory cytokines and other immune related genes in the liver of piglets. Methods In the present study, 15 six-week-old piglets were randomly assigned to the following three different dietary treatments for 4 weeks: control diet, diet containing 8 mg DON/kg feed, and diet containing 0.8 mg ZEN/kg feed. After 4 weeks, liver samples were collected and sequenced using RNA-Seq to investigate the effects of the mycotoxins on genes and gene networks associated with the immune systems of the piglets. Results Our analysis identified a total of 249 differentially expressed genes (DEGs), which included 99 upregulated and 150 downregulated genes in both the DON and ZEN dietary treatment groups. After biological pathway analysis, the DEGs were determined to be significantly enriched in gene ontology terms associated with many biological pathways, including immune response and cellular and metabolic processes. Consistent with inflammatory stimulation due to the mycotoxin-contaminated diet, the following Kyoto encyclopedia of genes and genomes pathways, which were related to disease and immune responses, were found to be enriched in the DEGs: allograft rejection pathway, cell adhesion molecules, graft-versus-host disease, autoimmune thyroid disease (AITD), type I diabetes mellitus, human T-cell leukemia lymphoma virus infection, and viral carcinogenesis. Genome-wide expression analysis revealed that DON and ZEN treatments downregulated the expression of the majority of the DEGs that were associated with inflammatory cytokines (interleukin 10 receptor, beta, chemokine [C-X-C motif] ligand 9), proliferation (insulin-like growth factor 1, major facilitator superfamily domain containing 2A, insulin-like growth factor binding protein 2, lipase G, and salt inducible kinase 1), and other immune response networks (paired immunoglobulin-like type 2 receptor beta, Src-like-adaptor-1 [SLA1], SLA3, SLA5, SLA7, claudin 4, nicotinamide N-methyltransferase, thyrotropin-releasing hormone degrading enzyme, ubiquitin D, histone H2B type 1, and serum amyloid A). Conclusion In summary, our results demonstrated that high concentrations DON and ZEN disrupt immune-related processes in the liver.
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Affiliation(s)
- Kondreddy Eswar Reddy
- Animal Nutritional & Physiology Team, National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Jin Young Jeong
- Animal Nutritional & Physiology Team, National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Yookyung Lee
- Animal Nutritional & Physiology Team, National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Hyun-Jeong Lee
- Animal Nutritional & Physiology Team, National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Min Seok Kim
- Animal Nutritional & Physiology Team, National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Dong-Wook Kim
- Animal Nutritional & Physiology Team, National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Hyun Jung Jung
- Animal Nutritional & Physiology Team, National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Changyong Choe
- Animal Disease & Biosecurity Team, National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Young Kyoon Oh
- Animal Nutritional & Physiology Team, National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Sung Dae Lee
- Animal Nutritional & Physiology Team, National Institute of Animal Science, RDA, Wanju 55365, Korea
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29
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Kang N, Toyofuku WM, Yang X, Scott MD. Inhibition of allogeneic cytotoxic T cell (CD8 +) proliferation via polymer-induced Treg (CD4 +) cells. Acta Biomater 2017; 57:146-155. [PMID: 28442414 DOI: 10.1016/j.actbio.2017.04.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 04/13/2017] [Accepted: 04/21/2017] [Indexed: 01/16/2023]
Abstract
T cell-mediated immune rejection remains a barrier to successful transplantation. Polymer-based bioengineering of cells may provide an effective means of preventing allorecognition and the proliferation of cytotoxic (CD8+) T lymphocytes (CTL). Using MHC-disparate murine splenocytes modified with succinimidyl valerate activated methoxypoly(ethylene glycol) [SVA-mPEG] polymers, the effects of leukocyte immunocamouflage on CD8+ and CD4+ alloproliferation and T regulatory (Treg) cell induction were assessed in a mixed lymphocyte reaction (MLR) model. Polymer-grafting effectively camouflaged multiple leukocyte markers (MHC class I and II, TCR and CD3) essential for effective allorecognition. Consequent to the polymer-induced immunocamouflage of the cell membrane, both CD8+ and CD4+ T cell alloproliferation were significantly inhibited in a polymer dose-dependent manner. The loss of alloproliferation correlated with the induction of Treg cells (CD4+CD25+Foxp3+). The Tregs, surprisingly, arose primarily via differentiation of naive, non-proliferating, CD4+ cells. Of biologic importance, the polymer-induced Treg were functional and exhibited potent immunosuppressive activity on allogeneic CTL proliferation. These results suggest that immunocamouflage-mediated attenuation of alloantigen-TCR recognition can prevent the tissue destructive allogeneic CD8+ T cell response, both directly and indirectly, through the generation/differentiation of functional Tregs. Immunocamouflage induced tolerance could be clinically valuable in attenuating T cell-mediated transplant rejection and in the treatment of autoimmune diseases. STATEMENT OF SIGNIFICANCE While our previous studies have demonstrated that polymer-grafting to MHC disparate leukocytes inhibits CD4+ cell proliferation, the effects of PEGylation on the alloproliferation of CD8+ cytotoxic T cells (CTL) was not examined. As shown here, PEGylation of allogeneic leukocytes prevents the generation of the CTL response responsible for acute rejection. The loss of CTL proliferation is consequent to the polymer-based attenuation of allorecognition and the induction of T regulatory cells (Tregs). Interestingly, the Tregs are primarily generated via the differentiation of non-proliferating naive T cells. Importantly, the Tregs are functional and effectively induce a tolerogenic environment when transferred to an alloresponsive environment. The use of polymer-modified leukocytes provides a unique approach to effectively maximize the biologic production of functional Tregs both in vitro and in vivo. By using this approach it may be possible to attenuate unwanted alloresponses (e.g., graft rejection) or to treat autoimmune diseases.
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Affiliation(s)
- Ning Kang
- Canadian Blood Services, Life Sciences Centre, University of British Columbia, 2350 Health Science Mall, Vancouver, BC V6T 1Z3, Canada; University of British Columbia Centre for Blood Research, Life Sciences Centre, University of British Columbia, 2350 Health Science Mall, Vancouver, BC V6T 1Z3, Canada.
| | - Wendy M Toyofuku
- Canadian Blood Services, Life Sciences Centre, University of British Columbia, 2350 Health Science Mall, Vancouver, BC V6T 1Z3, Canada; University of British Columbia Centre for Blood Research, Life Sciences Centre, University of British Columbia, 2350 Health Science Mall, Vancouver, BC V6T 1Z3, Canada.
| | - Xining Yang
- University of British Columbia Centre for Blood Research, Life Sciences Centre, University of British Columbia, 2350 Health Science Mall, Vancouver, BC V6T 1Z3, Canada; Department of Pathology and Laboratory Medicine, Life Sciences Centre, University of British Columbia, 2350 Health Science Mall, Vancouver, BC V6T 1Z3, Canada.
| | - Mark D Scott
- Canadian Blood Services, Life Sciences Centre, University of British Columbia, 2350 Health Science Mall, Vancouver, BC V6T 1Z3, Canada; University of British Columbia Centre for Blood Research, Life Sciences Centre, University of British Columbia, 2350 Health Science Mall, Vancouver, BC V6T 1Z3, Canada; Department of Pathology and Laboratory Medicine, Life Sciences Centre, University of British Columbia, 2350 Health Science Mall, Vancouver, BC V6T 1Z3, Canada.
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Abstract
The kidney can be negatively affected by a range of innate and adaptive immune responses, resulting in alterations in the functions of the kidney and, in some cases, progression to renal failure. In many of these responses, infiltration of blood-borne leukocytes into the kidney is central to the response. In addition, a large population of mononuclear phagocytes resident in the kidney can modulate these responses. A great deal of research has investigated both the mechanisms of leukocyte recruitment to the kidney and the actions of immune cells resident within the kidney. Because of the dynamic nature of the processes whereby leukocytes enter sites of inflammation, in vivo imaging has been one of the key approaches used for understanding leukocyte recruitment as it occurs throughout the body, and this is also true for kidney. However, imaging this organ and its complicated microvasculature during different forms of renal pathology presents a unique set of challenges. In this review, we examine the approaches used for intravital imaging of the kidney and summarize the insights gained from these studies regarding the mechanisms of leukocyte entry into the kidney during inflammation and the actions of immune cells within this organ.
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Romero R, Chaemsaithong P, Chaiyasit N, Docheva N, Dong Z, Kim CJ, Kim YM, Kim JS, Qureshi F, Jacques SM, Yoon BH, Chaiworapongsa T, Yeo L, Hassan SS, Erez O, Korzeniewski SJ. CXCL10 and IL-6: Markers of two different forms of intra-amniotic inflammation in preterm labor. Am J Reprod Immunol 2017; 78. [PMID: 28544362 PMCID: PMC5488235 DOI: 10.1111/aji.12685] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 03/20/2017] [Indexed: 12/24/2022] Open
Abstract
Problem To determine whether amniotic fluid (AF) CXCL10 concentration is associated with histologic chronic chorioamnionitis in patients with preterm labor (PTL) and preterm prelabor rupture of the membranes (PROM). Method of Study This study included 168 women who had an episode of PTL or preterm PROM. AF interleukin (IL)‐6 and CXCL10 concentrations were determined by immunoassay. Results (i) Increased AF CXCL10 concentration was associated with chronic (OR: 4.8; 95% CI: 1.7‐14), but not acute chorioamnionitis; (ii) increased AF IL‐6 concentration was associated with acute (OR: 4.2; 95% CI: 1.3‐13.7) but not chronic chorioamnionitis; and (iii) an increase in AF CXCL10 concentration was associated with placental lesions consistent with maternal anti‐fetal rejection (OR: 3.7; 95% CI: 1.3‐10.4). (iv) All patients with elevated AF CXCL10 and IL‐6 delivered preterm. Conclusion Increased AF CXCL10 concentration is associated with chronic chorioamnionitis or maternal anti‐fetal rejection, whereas increased AF IL‐6 concentration is associated with acute histologic chorioamnionitis.
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Affiliation(s)
- Roberto Romero
- Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD and Detroit, MI, USA.,Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI, USA.,Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI, USA.,Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, USA
| | - Piya Chaemsaithong
- Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD and Detroit, MI, USA.,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Noppadol Chaiyasit
- Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD and Detroit, MI, USA.,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Nikolina Docheva
- Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD and Detroit, MI, USA.,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Zhong Dong
- Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD and Detroit, MI, USA.,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Chong Jai Kim
- Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD and Detroit, MI, USA.,Department of Pathology, University of Ulsan College of Medicine, Seoul, Korea
| | - Yeon Mee Kim
- Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD and Detroit, MI, USA.,Department of Pathology, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea
| | - Jung-Sun Kim
- Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD and Detroit, MI, USA.,Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Faisal Qureshi
- Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD and Detroit, MI, USA.,Department of Pathology, Hutzel Women's Hospital, Wayne State University School of Medicine, Detroit, MI, USA
| | - Suzanne M Jacques
- Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD and Detroit, MI, USA.,Department of Pathology, Hutzel Women's Hospital, Wayne State University School of Medicine, Detroit, MI, USA
| | - Bo Hyun Yoon
- Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD and Detroit, MI, USA.,Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Tinnakorn Chaiworapongsa
- Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD and Detroit, MI, USA.,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Lami Yeo
- Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD and Detroit, MI, USA.,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Sonia S Hassan
- Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD and Detroit, MI, USA.,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Offer Erez
- Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD and Detroit, MI, USA.,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Steven J Korzeniewski
- Perinatology Research Branch, Program for Perinatal Research and Obstetrics, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD and Detroit, MI, USA.,Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI, USA.,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, USA
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Del Rio ML, Bravo Moral AM, Fernandez-Renedo C, Buhler L, Perez-Simon JA, Chaloin O, Alvarez Nogal R, Fernandez-Caso M, Rodriguez-Barbosa JI. Modulation of cytotoxic responses by targeting CD160 prolongs skin graft survival across major histocompatibility class I barrier. Transl Res 2017; 181:83-95.e3. [PMID: 27702550 DOI: 10.1016/j.trsl.2016.09.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Revised: 08/23/2016] [Accepted: 09/08/2016] [Indexed: 11/26/2022]
Abstract
CD160 is a glycosylphosphatidylinositol-anchored protein of the immunoglobulin superfamily. It exhibits a pattern of expression coincident in humans and mice that is mainly restricted to cytotoxic cells and to all intestinal intraepithelial T lymphocytes. B- and T-lymphocyte attenuator (BTLA) and CD160 interact with cysteine-rich domain 1 of the extracellular region of Herpesvirus entry mediator (HVEM). CD160 engagement by HVEM can deliver inhibitory signals to a small subset of human CD4 T cells and attenuate its proliferation and cytokine secretion, but can also costimulate natural killer cells or intraepithelial lymphocytes. In turn, CD160 and BTLA can also function as agonist ligands being capable of costimulating T cells through membrane HVEM. Based on the restricted pattern of CD160 expression in cytotoxic cells, we postulated that CD160 may represent a suitable target for immune intervention in the setting of transplantation to modulate allogeneic cytotoxic responses. We demonstrated that in vivo administration of anti-CD160 antibody in combination with anti-CD40 L antibody to limit CD4 T-cell help modulated cytotoxic responses in a major histocompatibility complex class I mismatched model of allogeneic skin graft transplantation (bm1 donor to C57BL/6 recipient) and significantly prolonged graft survival. The implementation of this strategy in transplantation may reinforce current immunosuppression protocols and contribute to a better control of CD8 T-cell responses.
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Affiliation(s)
- Maria-Luisa Del Rio
- Transplantation Immunobiology Section, University of Leon and Castilla and Leon Regional Transplantation Coordination, Leon University Hospital, Leon, Spain.
| | - Ana Maria Bravo Moral
- Department of Veterinary Clinical Sciences, University of Santiago de Compostela, Veterinary Faculty, Lugo, Spain
| | - Carlos Fernandez-Renedo
- Transplantation Immunobiology Section, University of Leon and Castilla and Leon Regional Transplantation Coordination, Leon University Hospital, Leon, Spain
| | - Leo Buhler
- Visceral and Transplantation Surgery, Department of Surgery, University Hospitals of Geneva and Faculty of Medicine, Geneva, Switzerland
| | - Jose-Antonio Perez-Simon
- Department of Hematology, University Hospital Virgen del Rocio/Institute of Biomedicine (IBIS/CSIC), Sevilla, Spain
| | - Olivier Chaloin
- CNRS UPR 3572, IBMC, Immunopathologie et Chimie Thérapeutique, Strasbourg, France
| | - Rafael Alvarez Nogal
- Department of Molecular and Cell Biology, School of Biological Sciences, University of Leon, Leon, Spain
| | - Maximino Fernandez-Caso
- Department of Medicine, Surgery and Veterinary Anatomy, School of Veterinary Medicine, University of Leon, Leon, Spain
| | - Jose-Ignacio Rodriguez-Barbosa
- Transplantation Immunobiology Section, University of Leon and Castilla and Leon Regional Transplantation Coordination, Leon University Hospital, Leon, Spain.
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Transcriptome Profiling of IL-17A Preactivated Mesenchymal Stem Cells: A Comparative Study to Unmodified and IFN- γ Modified Mesenchymal Stem Cells. Stem Cells Int 2017; 2017:1025820. [PMID: 28293262 PMCID: PMC5331321 DOI: 10.1155/2017/1025820] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 12/20/2016] [Indexed: 12/20/2022] Open
Abstract
Human mesenchymal stem cells pretreatment with IL-17A (MSC-17) potently enhances T cell immunosuppression but not their immunogenicity, in addition to avidly promoting the induction of suppressive regulatory T cells. The aim of this study was to identify potential mechanisms by which human MSC-17 mediate their superior immunomodulatory function. Untreated-MSC (UT-MSC), IFN-γ treated MSC (MSC-γ), and MSC-17 were assessed for their gene expression profile by microarray. Significantly regulated genes were identified for their biological functions (Database for Annotation, Visualisation and Integrated Discovery, DAVID). Microarray analyses identified 1278 differentially regulated genes between MSC-γ and UT-MSC and 67 genes between MSC-17 and UT-MSC. MSC-γ were enriched for genes involved in immune response, antigen processing and presentation, humoral response, and complement activation, consistent with increased MSC-γ immunogenicity. MSC-17 genes were associated with chemotaxis response, which may be involved in T cell recruitment for MSC-17 immunosuppression. MMP1, MMP13, and CXCL6 were highly and specifically expressed in MSC-17, which was further validated by real-time PCR. Thus, MMPs and chemokines may play a key role in mediating MSC-17 superior immunomodulatory function. MSC-17 represent a potential cellular therapy to suppress immunological T cell responses mediated by expression of an array of immunoregulatory molecules.
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Xu Y, Zhang G, Chang Y, Qiu YX, Wang C. The Preparation of Acellular Dermal Matrices by Freeze-Thawing and Ultrasonication Process and the Evaluation of Its Antigenicity. Cell Biochem Biophys 2017; 73:27-33. [PMID: 25649614 DOI: 10.1007/s12013-015-0569-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Antigenicity is the biggest obstacle of xenogeneic acellular dermal matrices (ADM) as dermal scaffold in treatment of large-area skin defect. We prepared ADM by repeated freezing and thawing and ultrasonic process, and then injected the ADM homogenate and degradation product into porcine skin to evaluate the effectiveness of the decellularized method and the antigenicity of porcine ADM. In this work, chinese miniature pigs (n = 10) were sensitized by subcutaneous injection with human ADM degradation products on days 0, 7, and 14. After 21 days, their abdominal skin was divided into five regions for intradermal injection of porcine ADM homogenate (PADM), PADM degradation products, human ADM homogenate (HADM), HADM degradation products, and physiological saline (negative control). Positive controls (n = 2) were processed with fresh human skin homogenate by the same method. The skin manifestations in related areas were observed at 24 and 48 h and then the skin was subjected to histopathological and immunohistochemical analysis. The results showed that skin erythema and hydroderma were not observed in all groups but in positive control group. The histopathological and immunohistochemical results confirmed that no inflammatory cell infiltration, irregular extracellular matrix, IL-2, and IFN-γ expression were observed in all four test groups. Our results suggest that the combination with repeated freeze-thawing and ultrasonication can be an effective method to prepare ADM, which has great potential in clinical application.
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Affiliation(s)
- Yazhen Xu
- Department of Burns and Plastic Surgery, Peking University Fourth School of Clinical Medicine, Beijing, 100035, People's Republic of China
| | - Guoan Zhang
- Department of Burns and Plastic Surgery, Peking University Fourth School of Clinical Medicine, Beijing, 100035, People's Republic of China.
| | - Yang Chang
- Department of Burns and Plastic Surgery, Peking University Fourth School of Clinical Medicine, Beijing, 100035, People's Republic of China
| | - Yu-Xuan Qiu
- Department of Burns and Plastic Surgery, Peking University Fourth School of Clinical Medicine, Beijing, 100035, People's Republic of China
| | - Cheng Wang
- Beijing Jishuitan Hospital, Beijing, 100035, People's Republic of China
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Shibasaki Y, Hatanaka C, Matsuura Y, Miyazawa R, Yabu T, Moritomo T, Nakanishi T. Effects of IFNγ administration on allograft rejection in ginbuna crucian carp. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2016; 62:108-115. [PMID: 27156851 DOI: 10.1016/j.dci.2016.04.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 04/29/2016] [Accepted: 04/29/2016] [Indexed: 06/05/2023]
Abstract
In vertebrates, the rejection of allografts is primarily accomplished by cell-mediated immunity. We recently identified four IFNγ isoforms with antiviral activity in ginbuna crucian carp, Carassius auratus langsdorfii. However, involvement of the IFNγ isoforms in cell-mediated immunity, especially in T cell function remains unknown. Here we investigate expression of the IFNγ isoforms and effects of administration of recombinant IFNγ (rgIFNγ) isoforms in ginbuna scale allograft rejection. All four IFNγ isoforms showed significantly higher expression with the progression of graft rejection. Administration of rgIFNγrel 1 but not rgIFNγrel 2, rgIFNγ1 nor rgIFNγ2 enhanced allograft rejection. The number of CD4(+) and CD8α(+) cells increased in early stages of rejection, while sIgM(+) cells were higher than controls at day 0 and 5 in the rgIFNγrel 1 administrated group. Expression of IFNγ1 and IFNγ2 mRNA was significantly up-regulated by rgIFNγrel 1 administration, while that of IFNγrel 1 and IFNγrel 2 was not. These results suggest different contributions of the four IFNγ isoforms toward the immune responses comprising allograft rejection.
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Affiliation(s)
- Yasuhiro Shibasaki
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-0880, Japan
| | - Chihiro Hatanaka
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-0880, Japan
| | - Yuta Matsuura
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-0880, Japan
| | - Ryuichiro Miyazawa
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-0880, Japan
| | - Takeshi Yabu
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-0880, Japan
| | - Tadaaki Moritomo
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-0880, Japan
| | - Teruyuki Nakanishi
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-0880, Japan.
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Park MJ, Lee SH, Lee SH, Kim EK, Lee EJ, Moon YM, La Cho M. GRIM19 ameliorates acute graft-versus-host disease (GVHD) by modulating Th17 and Treg cell balance through down-regulation of STAT3 and NF-AT activation. J Transl Med 2016; 14:206. [PMID: 27391226 PMCID: PMC4938933 DOI: 10.1186/s12967-016-0963-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 06/28/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND T helper (Th) 17 cells are a subset of T helper cells that express interleukin (IL)-17 and initiate the inflammatory response in autoimmune diseases. Regulatory T cells (Tregs) are a subpopulation of T cells that produce forkhead box P3 (FOXP3) and inhibit the immune response. Graft versus host disease (GVHD) is a complication of allogeneic tissue transplantation, and Th17 cells and their proinflammatory activity play a central role in the pathogenesis of GVHD. Gene associated with retinoid-interferon-induced mortality (GRIM) 19, originally identified as a nuclear protein, is expressed ubiquitously in various human tissues and regulate signal transducer and activator of transcription (STAT)3 activity. METHODS Splenoytes and bone marrow cells were transplanted into mice with GVHD. The alloresponse of T cells and GVHD clinical score was measured. Realtime-polymerase chain reaction (realtime-PCR) was used to examine mRNA level. Flow cytometry and enzyme linked immunosorbent assay (ELISA) was used to evaluate protein expression. RESULTS A GRIM19 transgenic cell transplant inhibited Th17 cell differentiation, alloreactive T cell responses, and STAT3 expression in mice with GVHD. On the other hand, the differentiation of Tregs and STAT5 production were enhanced by GRIM19. Overall, the severity of GVHD was decreased in mice that had received GRIM19 transgenic bone marrow and spleen transplants. Transplantation from GRIM19-overexpressing cells downregulated the expression of nuclear factor of activated T cells (NFATc1) but promoted the expression of regulator of calcineurin (RCAN)3 while downregulating NFAT-dependent cytokine gene expression. This complex mechanism underlies the therapeutic effect of GRIM19. CONCLUSIONS We observed that GRIM19 can reduce Th17 cell differentiation and alloreactive T cell responses in vitro and in vivo. Additionally, GRIM19 suppressed the severity of GVHD by modulating STAT3 activity and controlling Th17 and Treg cell differentiation. These results suggest that GRIM19 attenuates acute GVHD through the inhibition of the excessive inflammatory response mediated by T cell activation.
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Affiliation(s)
- Min-Jung Park
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, South Korea
| | - Seung Hoon Lee
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, South Korea
| | - Sung-Hee Lee
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, South Korea
| | - Eun-Kyung Kim
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, South Korea
| | - Eun Jung Lee
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, South Korea
| | - Young-Mee Moon
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, South Korea
| | - Mi- La Cho
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, South Korea. .,Divison of Rheumatology, Department of Internal Medicine, The Catholic University of Korea, Seoul, 137-040, South Korea. .,Conversant Research Consortium in Immunologic Disease, College of Medicine, The Catholic University of Korea, Korea 505 Banpo-Dong, Seocho-Ku, Seoul, 137-040, Korea.
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Chen QR, Wang LF, Xia SS, Zhang YM, Xu JN, Li H, Ding YZ. Role of interleukin-17A in early graft rejection after orthotopic lung transplantation in mice. J Thorac Dis 2016; 8:1069-79. [PMID: 27293822 DOI: 10.21037/jtd.2015.12.08] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND The cellular and molecular mechanisms underlying lung allograft rejection remain poorly understood. We investigated the potential role of interleukin (IL)-17A in lung transplant rejection in a mouse model, because previous studies in clinical and rodent models have implicated IL-17A in both acute and chronic rejection. METHODS To generate an orthotopic lung transplantation model, lungs from C57BL/6 or BALB/c mice were transplanted into C57BL/6 mice (isograft and allograft models, respectively). The effects of anti-IL-17A treatment in allograft recipients were investigated. The histological features and rejection status of isografts and allografts were assessed at 3, 7, and 28 days after transplantation, and differences in graft infiltrating cells and mRNA expression of relevant cytokines were quantified at 3 and 7 days after transplantation. RESULTS As expected, isografts showed no obvious signs of rejection, whereas allografts exhibited minimal-to-mild rejection (grade A1-A2) by day 3 and moderate-to-severe rejection (grade A3-A4) by day 7, without evidence of obliterative bronchiolitis (OB). However, by 28 days, evidence of OB was observed in 67% (2/3) of allografts and severe rejection (grade A4) was observed in all. IL-17 mRNA expression in allografts was increased with rejection, and interferon (IFN)-γ and IL-6 mRNA expression levels followed a similar pattern. In contrast, IL-22 expression in allografts was only slightly increased. Antibody (Ab) neutralization of IL-17A diminished the signs of acute rejection at 7 days after transplantation in allografts, and this early protection was accompanied by a decrease in cellular stress according to histological evaluation, suggesting the involvement of IL-17A in the development of early post-transplantation lesions. CONCLUSIONS Our data indicate that IL-17A is important in the pathophysiology of allograft rejection, and neutralization of IL-17A is a potential therapeutic strategy to preventing lung transplant rejection.
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Affiliation(s)
- Qi-Rui Chen
- 1 Department of Thoracic Surgery, Beijing Chao-yang Hospital, Capital Medical University, Beijing 100020, China ; 2 Department of Immunology, Capital Medical University, Beijing 100069, China
| | - Li-Feng Wang
- 1 Department of Thoracic Surgery, Beijing Chao-yang Hospital, Capital Medical University, Beijing 100020, China ; 2 Department of Immunology, Capital Medical University, Beijing 100069, China
| | - Si-Si Xia
- 1 Department of Thoracic Surgery, Beijing Chao-yang Hospital, Capital Medical University, Beijing 100020, China ; 2 Department of Immunology, Capital Medical University, Beijing 100069, China
| | - Ya-Mei Zhang
- 1 Department of Thoracic Surgery, Beijing Chao-yang Hospital, Capital Medical University, Beijing 100020, China ; 2 Department of Immunology, Capital Medical University, Beijing 100069, China
| | - Jiang-Nan Xu
- 1 Department of Thoracic Surgery, Beijing Chao-yang Hospital, Capital Medical University, Beijing 100020, China ; 2 Department of Immunology, Capital Medical University, Beijing 100069, China
| | - Hui Li
- 1 Department of Thoracic Surgery, Beijing Chao-yang Hospital, Capital Medical University, Beijing 100020, China ; 2 Department of Immunology, Capital Medical University, Beijing 100069, China
| | - Yao-Zhong Ding
- 1 Department of Thoracic Surgery, Beijing Chao-yang Hospital, Capital Medical University, Beijing 100020, China ; 2 Department of Immunology, Capital Medical University, Beijing 100069, China
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Lee SH, Park MJ, Lee SH, Cho ML. Coenzyme Q10 Exerts Anti-Inflammatory Activity and Induces Treg in Graft Versus Host Disease. J Med Food 2016; 19:238-44. [PMID: 26872287 DOI: 10.1089/jmf.2015.3535] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The objective of this study was to determine whether coenzyme Q10 (CoQ10) can reduce the severity of graft versus host disease (GVHD) by inducing regulatory T cells (Tregs). CoQ10 or vehicle was orally administrated once a day for 22 days to mice with GVHD. We measured the alloresponse of the T cells and the GVHD clinical scores. Real-time polymerase chain reaction was used to examine messenger RNA (mRNA) level. Flow cytometry and enzyme-linked immunosorbent assay were used to evaluate protein expression. CoQ10 reduced the T-cell alloresponse and the expression of interferon (IFN)-γ and interleukin (IL)-17. The severity of GVHD and gene expressions of IL-6 and tumor necrosis factor (TNF)-α decreased with CoQ10 treatment. Furthermore, CoQ10 promoted weight gain and survival in GVHD mice. Flow cytometry revealed that CoQ10 dose dependently induced Treg differentiation, but FK506, an immunosuppressive drug, decreased Treg differentiation dose dependently. In conclusion, CoQ10 downregulates the alloreactivity of T cells and reduces GVHD severity, enhancing the differentiation of Tregs.
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Affiliation(s)
- Seung Hoon Lee
- 1 The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea , Seoul, South Korea
| | - Min-Jung Park
- 1 The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea , Seoul, South Korea .,2 Impact Biotech , Seoul, South Korea
| | - Sung-hee Lee
- 1 The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea , Seoul, South Korea
| | - Mi-La Cho
- 1 The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea , Seoul, South Korea .,3 Divison of Rheumatology, Department of Internal Medicine, The Catholic University of Korea , Seoul, South Korea
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Dolgikh MS. [Role of innate immunity in tolerance induction]. BIOMEDIT︠S︡INSKAI︠A︡ KHIMII︠A︡ 2015; 61:560-78. [PMID: 26539864 DOI: 10.18097/pbmc20156105560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This review considers the role of innate immunity in mechanisms of transplant tolerance and rejection, analyse the role of innate immunity cells (dendritic cells-DC, NK, must and other cells) in these processes, and the pathes of creation of tolerogenic DC for transplant rejection therapy and tolerance.
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Affiliation(s)
- M S Dolgikh
- Shumakov Institute of Transplantology and Artificial organs
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40
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Deng G, Deng R, Yao J, Liao B, Chen Y, Wu Z, Hu H, Zhou X, Ma Y. Trichinella spiralis infection changes immune response in mice performed abdominal heterotopic cardiac transplantation and prolongs cardiac allograft survival time. Parasitol Res 2015; 115:407-14. [DOI: 10.1007/s00436-015-4762-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 09/28/2015] [Indexed: 10/22/2022]
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Chronic inflammation of the placenta: definition, classification, pathogenesis, and clinical significance. Am J Obstet Gynecol 2015; 213:S53-69. [PMID: 26428503 DOI: 10.1016/j.ajog.2015.08.041] [Citation(s) in RCA: 317] [Impact Index Per Article: 35.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Revised: 08/12/2015] [Accepted: 08/16/2015] [Indexed: 02/06/2023]
Abstract
Chronic inflammatory lesions of the placenta are characterized by the infiltration of the organ by lymphocytes, plasma cells, and/or macrophages and may result from infections (viral, bacterial, parasitic) or be of immune origin (maternal anti-fetal rejection). The 3 major lesions are villitis (when the inflammatory process affects the villous tree), chronic chorioamnionitis (which affects the chorioamniotic membranes), and chronic deciduitis (which involves the decidua basalis). Maternal cellular infiltration is a common feature of the lesions. Villitis of unknown etiology (VUE) is a destructive villous inflammatory lesion that is characterized by the infiltration of maternal T cells (CD8+ cytotoxic T cells) into chorionic villi. Migration of maternal T cells into the villi is driven by the production of T-cell chemokines in the affected villi. Activation of macrophages in the villi has been implicated in the destruction of the villous architecture. VUE has been reported in association with preterm and term fetal growth restriction, preeclampsia, fetal death, and preterm labor. Infants whose placentas have VUE are at risk for death and abnormal neurodevelopmental outcome at the age of 2 years. Chronic chorioamnionitis is the most common lesion in late spontaneous preterm birth and is characterized by the infiltration of maternal CD8+ T cells into the chorioamniotic membranes. These cytotoxic T cells can induce trophoblast apoptosis and damage the fetal membranes. The lesion frequently is accompanied by VUE. Chronic deciduitis consists of the presence of lymphocytes or plasma cells in the basal plate of the placenta. This lesion is more common in pregnancies that result from egg donation and has been reported in a subset of patients with premature labor. Chronic placental inflammatory lesions can be due to maternal anti-fetal rejection, a process associated with the development of a novel form of fetal systemic inflammatory response. The syndrome is characterized by an elevation of the fetal plasma T-cell chemokine. The evidence that maternal anti-fetal rejection underlies the pathogenesis of many chronic inflammatory lesions of the placenta is reviewed. This article includes figures and histologic examples of all chronic inflammatory lesions of the placenta.
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CD8 T-cell recognition of acquired alloantigen promotes acute allograft rejection. Proc Natl Acad Sci U S A 2015; 112:12788-93. [PMID: 26420874 DOI: 10.1073/pnas.1513533112] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Adaptive CD8 T-cell immunity is the principal arm of the cellular alloimmune response, but its development requires help. This can be provided by CD4 T cells that recognize alloantigen "indirectly," as self-restricted allopeptide, but this process remains unexplained, because the target epitopes for CD4 and CD8 T-cell recognition are "unlinked" on different cells (recipient and donor antigen presenting cells (APCs), respectively). Here, we test the hypothesis that the presentation of intact and processed MHC class I alloantigen by recipient dendritic cells (DCs) (the "semidirect" pathway) allows linked help to be delivered by indirect-pathway CD4 T cells for generating destructive cytotoxic CD8 T-cell alloresponses. We show that CD8 T-cell-mediated rejection of murine heart allografts that lack hematopoietic APCs requires host secondary lymphoid tissue (SLT). SLT is necessary because within it, recipient dendritic cells can acquire MHC from graft parenchymal cells and simultaneously present it as intact protein to alloreactive CD8 T cells and as processed peptide alloantigen for recognition by indirect-pathway CD4 T cells. This enables delivery of essential help for generating cytotoxic CD8 T-cell responses that cause rapid allograft rejection. In demonstrating the functional relevance of the semidirect pathway to transplant rejection, our findings provide a solution to a long-standing conundrum as to why SLT is required for CD8 T-cell allorecognition of graft parenchymal cells and suggest a mechanism by which indirect-pathway CD4 T cells provide help for generating effector cytotoxic CD8 T-cell alloresponses at late time points after transplantation.
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Yuan J, Bagley J, Iacomini J. Hyperlipidemia Promotes Anti-Donor Th17 Responses That Accelerate Allograft Rejection. Am J Transplant 2015; 15:2336-45. [PMID: 26079335 PMCID: PMC5125017 DOI: 10.1111/ajt.13350] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 02/13/2015] [Accepted: 02/19/2015] [Indexed: 01/25/2023]
Abstract
Hyperlipidemia occurs in 95% of organ transplant recipients, however its effect on organ allograft rejection has not been investigated. We found that induction of hyperlipidemia in mice caused a significant acceleration of rejection of cardiac allografts. Accelerated rejection was associated with an aggressive T cell infiltrate that mediated significant tissue damage as well as increased serum levels of the proinflammatory cytokines IL-2, IL-6, and IL-17. Hyperlipidemic mice had an increased number of Th17 cells in their periphery and rejecting allografts from hyperlipidemic mice contained significant numbers of IL-17 producing T cells that were not detectable in transplants harvested from controls. Neutralization or genetic ablation of IL-17 prolonged survival of cardiac allografts transplanted into hyperlipidemic recipients, suggesting that IL-17 production promotes accelerated rejection. Analysis of alloreactive T cell frequencies directly ex vivo in naïve mice revealed that the frequency of donor reactive IL-17 producing cells in hyperlipidemic was increased prior to antigen exposure, suggesting that hyperlipidemia was sufficient to alter T cell alloreactivity and promote anti-donor Th17 responses on first exposure to antigen. Together, our data suggest that hyperlipidemia alters rejection by altering the types of T cell subsets that respond to donor antigen by promoting Th17 biased anti-donor reactivity.
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Bagley J, Yuan J, Chandrakar A, Iacomini J. Hyperlipidemia Alters Regulatory T Cell Function and Promotes Resistance to Tolerance Induction Through Costimulatory Molecule Blockade. Am J Transplant 2015; 15:2324-35. [PMID: 26079467 PMCID: PMC5125018 DOI: 10.1111/ajt.13351] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 03/13/2015] [Accepted: 03/31/2015] [Indexed: 01/25/2023]
Abstract
Recent work from our laboratory has shown that hyperlipidemia promotes accelerated rejection of vascularized cardiac allografts in mice by inducing anti-donor Th17 reactivity and production of IL-17. Here, we show that hyperlipidemia also affects FoxP3(+) regulatory T cells (Tregs). Hyperlipidemia promotes the development of Tregs that express low levels of CD25. Hyperlipidemia also promotes a decrease in central Tregs and an increase in effector Tregs that appears to account for the increase in the frequency of CD25(low) Tregs. Alterations in Treg subsets also appear to lead to alterations in Treg function. The ability of FoxP3(+) , CD25(high) , CD4(+) Tregs from hyperlipidemic mice to inhibit proliferation of effector T cells stimulated with anti-CD3 and CD28 was reduced when compared with Tregs from control mice. Regulatory T cells isolated from hyperlipidemic recipients exhibit increased activation of Akt, and a reduction in Bim levels that permits the expansion of FoxP3(+) CD25(low) CD4(+) T cells. Hyperlipidemic mice were also resistant to tolerance induction using costimulatory molecule blockade consisting of anti-CD154 and CTLA4Ig, a strategy that requires Tregs. Together, our data suggest that hyperlipidemia profoundly affects Treg subsets and function as well as the ability to induce tolerance.
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Affiliation(s)
- J. Bagley
- Department of Developmental, Molecular and Chemical Biology, Sackler School of Biomedical Sciences Programs in Immunology and Genetics, Tufts University School of Medicine, Boston, MA
| | - J. Yuan
- Department of Developmental, Molecular and Chemical Biology, Sackler School of Biomedical Sciences Programs in Immunology and Genetics, Tufts University School of Medicine, Boston, MA
| | - A. Chandrakar
- Schuster Family Transplantation Research Center Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - J. Iacomini
- Department of Developmental, Molecular and Chemical Biology, Sackler School of Biomedical Sciences Programs in Immunology and Genetics, Tufts University School of Medicine, Boston, MA,Corresponding author: John Iacomini,
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Shibasaki Y, Matsuura Y, Toda H, Imabayashi N, Nishino T, Uzumaki K, Hatanaka C, Yabu T, Moritomo T, Nakanishi T. Kinetics of lymphocyte subpopulations in allogeneic grafted scales of ginbuna crucian carp. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2015; 52:75-80. [PMID: 25917429 DOI: 10.1016/j.dci.2015.04.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 04/19/2015] [Accepted: 04/20/2015] [Indexed: 06/04/2023]
Abstract
In mammals the rejection of allografts is primarily accomplished by cell-mediated immunity including T cells. Recently, considerable studies reveal the existence of helper and cytotoxic T cell subsets in fish. Here we investigate the kinetics of CD4(+) and CD8α(+) T cells along with sIgM(+) cells and phagocytic cells in an allogeneic scale graft model using ginbuna crucian carp for understanding the mechanisms of cell-mediated immune response. The results showed that CD4(+) T cells first infiltrated into allogeneic scales followed by CD8α(+) and sIgM(+) cells, and finally phagocytic cells appeared in the graft. Furthermore, most of the CD8α(+) T cells appeared on the border of the allografted scales at the time of rejection. These results suggest that T cells play crucial roles and work together with other cell types for completion of allograft rejection.
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Affiliation(s)
- Yasuhiro Shibasaki
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-8510, Japan
| | - Yuta Matsuura
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-8510, Japan
| | - Hideaki Toda
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-8510, Japan
| | - Nozomi Imabayashi
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-8510, Japan
| | - Tatsuyuki Nishino
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-8510, Japan
| | - Kosuke Uzumaki
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-8510, Japan
| | - Chihiro Hatanaka
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-8510, Japan
| | - Takeshi Yabu
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-8510, Japan
| | - Tadaaki Moritomo
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-8510, Japan
| | - Teruyuki Nakanishi
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa 252-8510, Japan.
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Time-dependent specificity of immunopathologic (C4d-CD68) and histologic criteria of antibody-mediated rejection for donor-specific antibodies and allograft dysfunction in heart transplantation. Transplantation 2015; 99:586-93. [PMID: 24983305 DOI: 10.1097/tp.0000000000000246] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND In heart transplantation, antibody-mediated rejection (AMR) is diagnosed and graded on the basis of immunopathologic (C4d-CD68) and histopathologic criteria found on endomyocardial biopsies (EMB). Because some pathologic AMR (pAMR) grades may be associated with clinical AMR, and because humoral responses may be affected by the intensity of immunosuppression during the first posttransplantation year, we investigated the incidence and positive predictive values (PPV) of C4d-CD68 and pAMR grades for clinical AMR as a function of time. METHODS All 564 EMB from 40 adult heart recipients were graded for pAMR during the first posttransplantation year. Clinical AMR was diagnosed by simultaneous occurrence of pAMR on EMB, donor specific antibodies and allograft dysfunction. RESULTS One patient demonstrated clinical AMR at postoperative day 7 and one at 6 months (1-year incidence 5%). C4d-CD68 was found on 4,7% EMB with a "decrescendo" pattern over time (7% during the first 4 months vs. 1.2% during the last 8 months; P < 0.05). Histopathologic criteria of AMR occurred on 10.3% EMB with no particular time pattern. Only the infrequent (1.4%) pAMR2 grade (simultaneous histopathologic and immunopathologic markers) was predictive for clinical AMR, particularly after the initial postoperative period (first 4 months and last 8 months PPV = 33%-100%; P < 0.05). CONCLUSION In the first posttransplantation year, AMR immunopathologic and histopathologic markers were relatively frequent, but only their simultaneous occurrence (pAMR2) was predictive of clinical AMR. Furthermore, posttransplantation time may modulate the occurrence of C4d-CD68 on EMB and thus the incidence of pAMR2 and its relevance to the diagnosis of clinical AMR.
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Halim SA, Zaheer-ul-Haq. Structure based 3D-QSAR studies of Interleukin-2 inhibitors: Comparing the quality and predictivity of 3D-QSAR models obtained from different alignment methods and charge calculations. Chem Biol Interact 2015; 238:9-24. [PMID: 26051521 DOI: 10.1016/j.cbi.2015.05.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 05/12/2015] [Accepted: 05/29/2015] [Indexed: 12/11/2022]
Abstract
Interleukin-2 is an essential cytokine in an innate immune response, and is a promising drug target for several immunological disorders. In the present study, structure-based 3D-QSAR modeling was carried out via Comparative Molecular Field Analysis (CoMFA) and Comparative Molecular Similarity Index Analysis (CoMSIA) methods. Six different partial charge calculation methods were used in combination with two different alignment methods to scrutinize their effects on the predictive power of 3D-QSAR models. The best CoMFA and CoMSIA models were obtained with the AM1 charges when used with co-conformer based substructure alignment (CCBSA) method. The obtained models posses excellent correlation coefficient value and also exhibited good predictive power (for CoMFA: q(2)=0.619; r(2)=0.890; r(2)Pred=0.765 and for CoMSIA: q(2)=0.607; r(2)=0.884; r(2)Pred=0.655). The developed models were further validated by using a set of another sixteen compounds as external test set 2 and both models showed strong predictive power with r(2)Pred=>0.8. The contour maps obtained from these models better interpret the structure activity relationship; hence the developed models would help to design and optimize more potent IL-2 inhibitors. The results might have implications for rational design of specific anti-inflammatory compounds with improved affinity and selectivity.
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Affiliation(s)
- Sobia Ahsan Halim
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; National Centre of Excellence in Molecular Biology, University of the Punjab, Lahore 53700, Pakistan.
| | - Zaheer-ul-Haq
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
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Wang L, Wei B, Hu G, Wang L, Bi M, Sun Z, Jin Y. Screening of differentially expressed genes associated with human glioblastoma and functional analysis using a DNA microarray. Mol Med Rep 2015; 12:1991-6. [PMID: 25901754 DOI: 10.3892/mmr.2015.3659] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 03/10/2015] [Indexed: 11/06/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most malignant type of human glioma, and has a poor prognosis. Screening differentially expressed genes (DEGs) in brain tumor samples and normal brain samples is of importance for identifying GBM and to design specific-targeting drugs. The transcriptional profile of GSE30563, containing three genechips of brain tumor samples and three genechips of normal brain samples, was downloaded from Gene Expression Omnibus to identify the DEGs. The differences in the expression of the DEGs in the two different samples were compared through hierarchical biclustering. The co-expression coefficient of the DEGs was calculated using the information from COXPRESdb, the network of the DEGs was constructed and functional enrichment and pathway analysis were performed. Finally, the transcription factors of important DEGs were predicted. A total of 1,006 DEGs, including 368 upregulated and 638 downregulated DEGs, were identified. A close correlation was demonstrated between six important genes, associated with immune response, HLA-DQB1, HLA-DRB1, HLA-DPA1, HLA-B, HLA-DMA and HLA-DRA, and the immune response. Allograft rejection was selected as the most significant pathway. A total of 17 transcription factors, including nuclear factor (NF)-κB and NF-κB1, and their binding sites containing these six DEGs, were also identified. The DEGs, including major histocompatibility complex (MHC) class II, DQβ1, MHC class II, DRβ1, MHC class IB, MHC class II, DMα, MHC class II, DPα1, MHC class II, DRα, may provide novel targets for the diagnosis and treatment of GBM. The transcription factors of these six genes and their binding sites may also provide evidence and direction for identifying target-specific drugs.
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Affiliation(s)
- Lina Wang
- Department of Ophthalmology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Bo Wei
- Department of Neurosurgery, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Guozhang Hu
- Department of Emergency Medicine, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Le Wang
- Department of Ophthalmology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Miaomiao Bi
- Department of Ophthalmology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Zhigang Sun
- Department of Neurosurgery, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Ying Jin
- Department of Neurology, Institute of Jilin Oilfield General Hospital, Changchun, Jilin 131200, P.R. China
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Millán O, Rafael-Valdivia L, San Segundo D, Boix F, Castro-Panete M, López-Hoyos M, Muro M, Valero-Hervás D, Rimola A, Navasa M, Muñoz P, Miras M, Andrés A, Guirado L, Pascual J, Brunet M. Should IFN-γ, IL-17 and IL-2 be considered predictive biomarkers of acute rejection in liver and kidney transplant? Results of a multicentric study. Clin Immunol 2014; 154:141-54. [DOI: 10.1016/j.clim.2014.07.007] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 07/16/2014] [Accepted: 07/23/2014] [Indexed: 02/06/2023]
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50
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Vokaer B, Charbonnier LM, Lemaître PH, Spilleboudt C, Le Moine A. IL-17A and IL-2-expanded regulatory T cells cooperate to inhibit Th1-mediated rejection of MHC II disparate skin grafts. PLoS One 2013; 8:e76040. [PMID: 24146810 PMCID: PMC3795694 DOI: 10.1371/journal.pone.0076040] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 08/23/2013] [Indexed: 11/26/2022] Open
Abstract
Several evidences suggest that regulatory T cells (Treg) promote Th17 differentiation. Based on this hypothesis, we tested the effect of IL-17A neutralization in a model of skin transplantation in which long-term graft survival depends on a strong in vivo Treg expansion induced by transient exogenous IL-2 administration. As expected, IL-2 supplementation prevented rejection of MHC class II disparate skin allografts but, surprisingly, not in IL-17A-deficient recipients. We attested that IL-17A was not required for IL-2-mediated Treg expansion, intragraft recruitment or suppressive capacities. Instead, IL-17A prevented allograft rejection by inhibiting Th1 alloreactivity independently of Tregs. Indeed, T-bet expression of naive alloreactive CD4+ T cells and the subsequent Th1 immune response was significantly enhanced in IL-17A deficient mice. Our results illustrate for the first time a protective role of IL-17A in CD4+-mediated allograft rejection process.
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Affiliation(s)
- Benoît Vokaer
- Institute for Medical Immunology, Université Libre de Bruxelles, Gosselies, Belgium
- * E-mail: (BV); (ALM)
| | | | - Philippe H. Lemaître
- Institute for Medical Immunology, Université Libre de Bruxelles, Gosselies, Belgium
| | - Chloé Spilleboudt
- Institute for Medical Immunology, Université Libre de Bruxelles, Gosselies, Belgium
| | - Alain Le Moine
- Institute for Medical Immunology, Université Libre de Bruxelles, Gosselies, Belgium
- * E-mail: (BV); (ALM)
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