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Chen T, Cao Q, Wang R, Zheng G, Azmi F, Lee VW, Wang YM, Li H, Yu D, Rogers NM, Alexander SI, Harris DCH, Wang Y. Attenuation of renal injury by depleting cDC1 and by repurposing Flt3 inhibitor in anti-GBM disease. Clin Immunol 2023; 250:109295. [PMID: 36933629 DOI: 10.1016/j.clim.2023.109295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 03/15/2023] [Indexed: 03/18/2023]
Abstract
Previous studies found cDC1s to be protective in early stage anti-GBM disease through Tregs, but pathogenic in late stage Adriamycin nephropathy through CD8+ T cells. Flt3 ligand is a growth factor essential for cDC1 development and Flt3 inhibitors are currently used for cancer treatment. We conducted this study to clarify the role and mechanisms of effects of cDC1s at different time points in anti-GBM disease. In addition, we aimed to utilize drug repurposing of Flt3 inhibitors to target cDC1s as a treatment of anti-GBM disease. We found that in human anti-GBM disease, the number of cDC1s increased significantly, proportionally more than cDC2s. The number of CD8+ T cells also increased significantly and their number correlated with cDC1 number. In XCR1-DTR mice, late (day 12-21) but not early (day 3-12) depletion of cDC1s attenuated kidney injury in mice with anti-GBM disease. cDC1s separated from kidneys of anti-GBM disease mice were found to have a pro-inflammatory phenotype (i.e. express high level of IL-6 and IL-12) in late but not early stage. In the late depletion model, the number of CD8+ T cells was also reduced, but not Tregs. CD8+ T cells separated from kidneys of anti-GBM disease mice expressed high levels of cytotoxic molecules (granzyme B and perforin) and inflammatory cytokines (TNF-α and IFN-γ), and their expression reduced significantly after cDC1 depletion with diphtheria toxin. These findings were reproduced using a Flt3 inhibitor in wild type mice. Therefore, cDC1s are pathogenic in anti-GBM disease through activation of CD8+ T cells. Flt3 inhibition successfully attenuated kidney injury through depletion of cDC1s. Repurposing Flt3 inhibitors has potential as a novel therapeutic strategy for anti-GBM disease.
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Affiliation(s)
- Titi Chen
- The University of Sydney, Camperdown, NSW 2006, Australia; The Westmead Institute for Medical Research, Hawkesbury Road, Westmead, NSW 2145, Australia; Department of Renal Medicine, Westmead Hospital, Hawkesbury Road, Westmead, NSW 2145, Australia.
| | - Qi Cao
- The University of Sydney, Camperdown, NSW 2006, Australia; The Westmead Institute for Medical Research, Hawkesbury Road, Westmead, NSW 2145, Australia
| | - Ruifeng Wang
- The University of Sydney, Camperdown, NSW 2006, Australia; The Westmead Institute for Medical Research, Hawkesbury Road, Westmead, NSW 2145, Australia; Department of Nephrology, The Second Hospital of Anhui Medical University, Anhui 230000, China
| | - Guoping Zheng
- The University of Sydney, Camperdown, NSW 2006, Australia; The Westmead Institute for Medical Research, Hawkesbury Road, Westmead, NSW 2145, Australia
| | - Farhana Azmi
- The University of Sydney, Camperdown, NSW 2006, Australia; The Westmead Institute for Medical Research, Hawkesbury Road, Westmead, NSW 2145, Australia
| | - Vincent W Lee
- The University of Sydney, Camperdown, NSW 2006, Australia; The Westmead Institute for Medical Research, Hawkesbury Road, Westmead, NSW 2145, Australia; Department of Renal Medicine, Westmead Hospital, Hawkesbury Road, Westmead, NSW 2145, Australia
| | - Yuan Ming Wang
- Centre for Kidney Research, Children's Hospital at Westmead, Sydney, NSW 2145, Australia
| | - Hongqi Li
- The University of Sydney, Camperdown, NSW 2006, Australia; The Westmead Institute for Medical Research, Hawkesbury Road, Westmead, NSW 2145, Australia; The Department of Gerontology, Anhui Provincial Hospital, the first affiliated Hospital of University of Science and Technology of China, Hefei 230001, China
| | - Di Yu
- Faculty of Medicine, The University of Queensland Diamantina Institute, St Lucia, QLD 4072, Australia
| | - Natasha M Rogers
- The University of Sydney, Camperdown, NSW 2006, Australia; The Westmead Institute for Medical Research, Hawkesbury Road, Westmead, NSW 2145, Australia; Department of Renal Medicine, Westmead Hospital, Hawkesbury Road, Westmead, NSW 2145, Australia
| | - Stephen I Alexander
- Centre for Kidney Research, Children's Hospital at Westmead, Sydney, NSW 2145, Australia
| | - David C H Harris
- The University of Sydney, Camperdown, NSW 2006, Australia; The Westmead Institute for Medical Research, Hawkesbury Road, Westmead, NSW 2145, Australia; Department of Renal Medicine, Westmead Hospital, Hawkesbury Road, Westmead, NSW 2145, Australia
| | - Yiping Wang
- The University of Sydney, Camperdown, NSW 2006, Australia; The Westmead Institute for Medical Research, Hawkesbury Road, Westmead, NSW 2145, Australia
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Degechisa ST, Dabi YT. Leptin Deficiency May Influence the Divergence of Cell-Mediated Immunity Between Lepromatous and Tuberculoid Leprosy Patients. J Inflamm Res 2022; 15:6719-6728. [PMID: 36536644 PMCID: PMC9758981 DOI: 10.2147/jir.s389845] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 11/29/2022] [Indexed: 04/28/2024] Open
Abstract
Leprosy is a disease caused by an intracellular bacillus bacterium called Mycobacterium leprae which lives and multiplies in the hosts' macrophages and Schwann cells. Depending on the degree of the host's cell-mediated immunity (CMI) response to the bacilli, the disease manifests itself in five clinical spectra ranging from polar tuberculoid (TT) to polar lepromatous leprosy (LL). A very high level of T helper 1 (Th1) driven bacilli-specific CMI is seen in the TT form, whereas this response is essentially nonexistent in the LL form. As a result, there is very low or absent bacillary load and localized nodular lesions in TT patients. On the contrary, LL patients presented with high bacillary load and generalized lesions due to low CMI response. The mechanism underlying this divergence of CMI response is not clearly elucidated yet. However, mounting evidence links it to an elevated number of Th1 and Th17 suppressing CD4+ CD25+ FOXP3+ T regulatory cells (Treg cells) which are abundantly found in LL than in TT patients. The predominance of these cells in LL patients is partly attributed to a deficiency of leptin, the cytokine-like peptide hormone, in these patients. Becausea normal level of leptin promotes the proliferation and preferential differentiation of effector T cells (Th1 and Th17) while inhibiting the growth and functional responsiveness of the Treg cells. In contrast, leptin deficiency or neutralization was reported to exert the opposite effect on Treg cells and effector T cells. Other smaller subsets of lymphocytes such as gamma delta (γδ) T cells and B regulatory cells are also modulated by leptin level in the pathogenesis of leprosy. Leptin may therefore regulate the divergence of CMI between TT and LL patients by regulating the homeostasis of effector T cells and Treg cells, and this review will examine the underlying mechanism for this.
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Affiliation(s)
- Sisay Teka Degechisa
- Medical Biochemistry Department, College of Health Sciences, Addis Ababa University, Addis Abeba, Ethiopia
- Medical Laboratory Science Department, College of Medicine and Health Sciences, Arba Minch University, Arba Minch, Ethiopia
| | - Yosef Tsegaye Dabi
- Medical Biochemistry Department, College of Health Sciences, Addis Ababa University, Addis Abeba, Ethiopia
- Medical Laboratory Science Department, Wollega University, Nekemte, Ethiopia
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3
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van Geffen C, Deißler A, Quante M, Renz H, Hartl D, Kolahian S. Regulatory Immune Cells in Idiopathic Pulmonary Fibrosis: Friends or Foes? Front Immunol 2021; 12:663203. [PMID: 33995390 PMCID: PMC8120991 DOI: 10.3389/fimmu.2021.663203] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/22/2021] [Indexed: 12/20/2022] Open
Abstract
The immune system is receiving increasing attention for interstitial lung diseases, as knowledge on its role in fibrosis development and response to therapies is expanding. Uncontrolled immune responses and unbalanced injury-inflammation-repair processes drive the initiation and progression of idiopathic pulmonary fibrosis. The regulatory immune system plays important roles in controlling pathogenic immune responses, regulating inflammation and modulating the transition of inflammation to fibrosis. This review aims to summarize and critically discuss the current knowledge on the potential role of regulatory immune cells, including mesenchymal stromal/stem cells, regulatory T cells, regulatory B cells, macrophages, dendritic cells and myeloid-derived suppressor cells in idiopathic pulmonary fibrosis. Furthermore, we review the emerging role of regulatory immune cells in anti-fibrotic therapy and lung transplantation. A comprehensive understanding of immune regulation could pave the way towards new therapeutic or preventive approaches in idiopathic pulmonary fibrosis.
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Affiliation(s)
- Chiel van Geffen
- Department of Experimental and Clinical Pharmacology and Pharmacogenomics, University Hospital Tübingen, Tübingen, Germany
| | - Astrid Deißler
- Department of Experimental and Clinical Pharmacology and Pharmacogenomics, University Hospital Tübingen, Tübingen, Germany.,Department of General, Visceral and Transplant Surgery, University Hospital Tübingen, Tübingen, Germany
| | - Markus Quante
- Department of General, Visceral and Transplant Surgery, University Hospital Tübingen, Tübingen, Germany
| | - Harald Renz
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University of Marburg, Marburg, Germany.,Universities of Giessen and Marburg Lung Center, German Center for Lung Research (DZL), Marburg, Germany
| | - Dominik Hartl
- Department of Pediatrics I, Eberhard Karls University of Tübingen, Tübingen, Germany.,Dominik Hartl, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Saeed Kolahian
- Department of Experimental and Clinical Pharmacology and Pharmacogenomics, University Hospital Tübingen, Tübingen, Germany.,Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University of Marburg, Marburg, Germany.,Universities of Giessen and Marburg Lung Center, German Center for Lung Research (DZL), Marburg, Germany
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4
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Wang R, Chen T, Wang C, Zhang Z, Wang XM, Li Q, Lee VWS, Wang YM, Zheng G, Alexander SI, Wang Y, Harris DCH, Cao Q. Flt3 inhibition alleviates chronic kidney disease by suppressing CD103+ dendritic cell-mediated T cell activation. Nephrol Dial Transplant 2020; 34:1853-1863. [PMID: 30590794 DOI: 10.1093/ndt/gfy385] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Accepted: 11/16/2018] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Chronic kidney disease (CKD) is a global public health problem, which lacks effective treatment. Previously, we have shown that CD103+ dendritic cells (DCs) are pathogenic in adriamycin nephropathy (AN), a model of human focal segmental glomerulosclerosis (FSGS). Fms-like tyrosine kinase 3 (Flt3) is a receptor that is expressed with high specificity on tissue resident CD103+ DCs. METHODS To test the effect on CD103+ DCs and kidney injury of inhibition of Flt3, we used a selective Flt3 inhibitor (AC220) to treat mice with AN. RESULTS Human CD141+ DCs, homologous to murine CD103+ DCs, were significantly increased in patients with FSGS. The number of kidney CD103+ DCs, but not CD103- DCs or plasmacytoid DCs, was significantly decreased in AN mice after AC220 administration. Treatment with AC220 significantly improved kidney function and reduced kidney injury and fibrosis in AN mice. AC220-treated AN mice had decreased levels of inflammatory cytokines and chemokines, tumor necrosis factor-α, interleukin (IL)-1β, IL-6, CCL2 and CCL5 and reduced kidney infiltration of CD4 T cells and CD8 T cells. The protective effect of AC220 was associated with its suppression of CD103+ DCs-mediated CD8 T cell proliferation and activation in AN mice. CONCLUSION Flt3 inhibitor AC220 effectively reduced kidney injury in AN mice, suggesting that this inhibitor might be a useful pharmaceutical agent to treat CKD.
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Affiliation(s)
- Ruifeng Wang
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, NSW, Australia
- Department of Nephrology, The Second Hospital of Anhui Medical University, Hefei, China
| | - Titi Chen
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, NSW, Australia
| | - Chengshi Wang
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, NSW, Australia
| | - Zhiqiang Zhang
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, NSW, Australia
| | - Xin Maggie Wang
- Flow Cytometry Facility, Westmead Institute for Medical Research, The University of Sydney, Sydney, NSW, Australia
| | - Qing Li
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, NSW, Australia
| | - Vincent W S Lee
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, NSW, Australia
| | - Yuan Min Wang
- Centre for Kidney Research, Children's Hospital at Westmead, Sydney, NSW, Australia
| | - Guoping Zheng
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, NSW, Australia
| | - Stephen I Alexander
- Centre for Kidney Research, Children's Hospital at Westmead, Sydney, NSW, Australia
| | - Yiping Wang
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, NSW, Australia
| | - David C H Harris
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, NSW, Australia
| | - Qi Cao
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, NSW, Australia
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5
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Cao Q, Wang Y, Wang C, Wang XM, Lee VWS, Zheng G, Zhao Y, Alexander SI, Harris DCH. Therapeutic potential of regulatory macrophages generated from peritoneal dialysate in adriamycin nephropathy. Am J Physiol Renal Physiol 2018; 314:F561-F571. [PMID: 29357438 DOI: 10.1152/ajprenal.00538.2017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Cell therapy using macrophages requires large amounts of cells, which are difficult to collect from patients. Patients undergoing peritoneal dialysis (PD) discard huge numbers of peritoneal macrophages in dialysate daily. Macrophages can be modulated to become regulatory macrophages, which have shown great promise as a therapeutic strategy in experimental kidney disease and human kidney transplantation. This study aimed to examine the potential of using peritoneal macrophages (PMs) from peritoneal dialysate to treat kidney disease. Monocytes/macrophages accounted for >40% of total peritoneal leukocytes in both patients and mice undergoing PD. PMs from patients and mice undergoing PD were more mature than peripheral monocytes/macrophages, as shown by low expression of C-C motif chemokine receptor 2 (CCR2) and morphological changes during in vitro culture. PMs from patients and mice undergoing PD displayed normal macrophage function and could be modulated into a regulatory (M2) phenotype. In vivo, adoptive transfer of peritoneal M2 macrophages derived from PD mice effectively protected against kidney injury in mice with adriamycin nephropathy (AN). Importantly, the transfused peritoneal M2 macrophages maintained their M2 phenotype in kidney of AN mice. In conclusion, PMs derived from patients and mice undergoing PD exhibited conventional macrophage features. Peritoneal M2 macrophages derived from PD mice are able to reduce kidney injury in AN, suggesting that peritoneal macrophages from patients undergoing PD may have the potential for clinical therapeutic application.
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Affiliation(s)
- Qi Cao
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
| | - Yiping Wang
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
| | - Changqi Wang
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
| | - Xin M. Wang
- Flow Cytometry Facility, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
| | - Vincent W. S. Lee
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
| | - Guoping Zheng
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
| | - Ye Zhao
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
| | - Stephen I. Alexander
- Centre for Kidney Research, Children’s Hospital at Westmead, Sydney, New South Wales, Australia
| | - David C. H. Harris
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
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6
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Yuan B, He J, Kisoh K, Hayashi H, Tanaka S, Si N, Zhao HY, Hirano T, Bian B, Takagi N. Effects of active bufadienolide compounds on human cancer cells and CD4+CD25+Foxp3+ regulatory T cells in mitogen-activated human peripheral blood mononuclear cells. Oncol Rep 2016; 36:1377-84. [PMID: 27431260 DOI: 10.3892/or.2016.4946] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 03/30/2016] [Indexed: 11/06/2022] Open
Abstract
The growth inhibitory effects of bufadienolide compounds were investigated in two intractable cancer cells, a human glioblastoma cell line U-87 and a pancreatic cancer cell line SW1990. Among four bufadienolide compounds, a dose-dependent cytotoxicity was observed in these cancer cells after treatment with gamabufotalin and arenobufagin. The IC50 values of the two compounds were 3-5 times higher in normal peripheral blood mononuclear cells (PBMCs) than these values for both cancer cell lines. However, similar phenomena were not observed for two other bufadienolide compounds, telocinobufagin and bufalin. These results thus suggest that gamabufotalin and arenobufagin possess selective cytotoxic activity against tumor cells rather than normal cells. Moreover, a clear dose-dependent lactate dehydrogenase (LDH) release, a well-known hallmark of necrosis, was observed in both cancer cells treated with gamabufotalin, suggesting that gamabufotalin-mediated cell death is predominantly associated with a necrosis-like phenotype. Of most importance, treatment with as little as 8 ng/ml of gamabufotalin, even an almost non-toxic concentration to PBMCs, efficiently downregulated the percentages of CD4+CD25+Foxp3+ regulator T (Treg) cells in mitogen-activated PBMCs. Given that Treg cells play a critical role in tumor immunotolerance by suppressing antitumor immunity, these results suggest that gamabufotalin may serve as a promising candidate, as an adjuvant therapeutic agent by manipulating Treg cells to enhance the efficacy of conventional anticancer drugs and lessen their side-effects. These findings provide insights into the clinical application of gamabufotalin for cancer patients with glioblastoma/pancreatic cancer based on its cytocidal effect against tumor cells as well as its depletion of Treg cells.
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Affiliation(s)
- Bo Yuan
- Department of Applied Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
| | - Jing He
- Department of Applied Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
| | - Keishi Kisoh
- Department of Applied Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
| | - Hideki Hayashi
- Department of Applied Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
| | - Sachiko Tanaka
- Department of Clinical Pharmacology, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
| | - Nan Si
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, P.R. China
| | - Hai-Yu Zhao
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, P.R. China
| | - Toshihiko Hirano
- Department of Clinical Pharmacology, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
| | - Baolin Bian
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, P.R. China
| | - Norio Takagi
- Department of Applied Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
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7
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Cao Q, Lu J, Li Q, Wang C, Wang XM, Lee VWS, Wang C, Nguyen H, Zheng G, Zhao Y, Alexander SI, Wang Y, Harris DCH. CD103+ Dendritic Cells Elicit CD8+ T Cell Responses to Accelerate Kidney Injury in Adriamycin Nephropathy. J Am Soc Nephrol 2015; 27:1344-60. [PMID: 26376858 DOI: 10.1681/asn.2015030229] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Accepted: 07/31/2015] [Indexed: 12/22/2022] Open
Abstract
CD103(+) dendritic cells (DCs) in nonlymphoid organs exhibit two main functions: maintaining tolerance by induction of regulatory T cells and protecting against tissue infection through cross-presentation of foreign antigens to CD8(+) T cells. However, the role of CD103(+) DCs in kidney disease is unknown. In this study, we show that CD103(+) DCs are one of four subpopulations of renal mononuclear phagocytes in normal kidneys. CD103(+) DCs expressed DC-specific surface markers, transcription factors, and growth factor receptors and were found in the kidney cortex but not in the medulla. The number of kidney CD103(+) DCs was significantly higher in mice with adriamycin nephropathy (AN) than in normal mice, and depletion of CD103(+) DCs attenuated kidney injury in AN mice. In vitro, kidney CD103(+) DCs preferentially primed CD8(+) T cells and did not directly induce tubular epithelial cell apoptosis. Adoptive transfer of CD8(+) T cells significantly exacerbated kidney injury in AN SCID mice, whereas depletion of CD103(+) DCs in these mice impaired activation and proliferation of transfused CD8(+) T cells and prevented the exacerbation of kidney injury associated with this transfusion. In conclusion, kidney CD103(+) DCs display a pathogenic role in murine CKD via activation of CD8(+) T cells.
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Affiliation(s)
- Qi Cao
- Centre for Transplant and Renal Research and
| | - Junyu Lu
- Emergency Department, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, China; and
| | - Qing Li
- Centre for Transplant and Renal Research and
| | | | - Xin Maggie Wang
- Flow Cytometry Facility, Westmead Millennium Institute, University of Sydney, Sydney, New South Wales, Australia
| | | | | | - Hanh Nguyen
- Centre for Transplant and Renal Research and
| | | | - Ye Zhao
- Centre for Transplant and Renal Research and
| | - Stephen I Alexander
- Centre for Kidney Research, Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Yiping Wang
- Centre for Transplant and Renal Research and
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8
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Zheng D, Li C, Wang S, Cang Y, Song Y, Liu X, Li X, Mohan C, Wu T, Hu D, Peng A. PSTK is a novel gene associated with early lung injury in Paraquat Poisoning. Life Sci 2015; 123:9-17. [PMID: 25592138 DOI: 10.1016/j.lfs.2014.12.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2014] [Revised: 11/21/2014] [Accepted: 12/16/2014] [Indexed: 10/24/2022]
Abstract
AIMS Paraquat Poisoning (PQ) can cause illness and death, and its main causes of mortality are acute respiratory failure and lung fibrosis. Early recognition of this condition and early treatment are vital. Thus, it is of importance to target the key genes controlling pathogenesis in the early stage of PQ. MAIN METHODS C57BL/6 mice were used for Paraquat intragastric administration as a model of PQ. Following a gene chip-based screening, the change of gene expression in the lung was further validated by bioinformatic analyses, co-expression network construction and real-time RT-PCR, Western blot and immunofluorescence assays. KEY FINDINGS 2287 genes with differential expression were identified at the very early stage of PQ. From these, 76 genes that were linked to mitochondrion function were further pursued. Among these genes, PSTK was a phosphorylase kinase which serves a protective role in oxidative stress lung damage. PSTK was the central gene in a 30-gene network that is important for mitochondrial complex I assembly, mitochondrial apoptosis and mitochondrial fatty acid beta-oxidation, suggesting that they could conceivably be related to the pathogenesis of PQ induced lung damage. Lastly, we confirmed that PSTK was lowered in rodent lungs following PQ. SIGNIFICANCE PSTK emerges as a central gene in a network of mitochondrial function genes in PQ exposed mice. The functional role of PSTK in PQ induced lung injury warrants further examination.
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Affiliation(s)
- Dong Zheng
- Department of Nephrology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Changbin Li
- Department of Nephrology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Shu Wang
- Department of Nephrology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Yanqing Cang
- Department of Nephrology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Yaxiang Song
- Department of Nephrology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Xinying Liu
- Department of Nephrology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Xinhua Li
- Department of Nephrology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Chandra Mohan
- Department of Nephrology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Tianfu Wu
- Department of Nephrology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Dayong Hu
- Department of Nephrology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China.
| | - Ai Peng
- Department of Nephrology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China.
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9
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Huang Q, Niu Z, Tan J, Yang J, Liu Y, Ma H, Lee VWS, Sun S, Song X, Guo M, Wang Y, Cao Q. IL-25 Elicits Innate Lymphoid Cells and Multipotent Progenitor Type 2 Cells That Reduce Renal Ischemic/Reperfusion Injury. J Am Soc Nephrol 2015; 26:2199-211. [PMID: 25556172 DOI: 10.1681/asn.2014050479] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Accepted: 11/16/2014] [Indexed: 12/21/2022] Open
Abstract
IL-25 is an important immune regulator that can promote Th2 immune response-dependent immunity, inflammation, and tissue repair in asthma, intestinal infection, and autoimmune diseases. In this study, we examined the effects of IL-25 in renal ischemic/reperfusion injury (IRI). Treating IRI mice with IL-25 significantly improved renal function and reduced renal injury. Furthermore, IL-25 treatment increased the levels of IL-4, IL-5, and IL-13 in serum and kidney and promoted induction of alternatively activated (M2) macrophages in kidney. Notably, IL-25 treatment also increased the frequency of type 2 innate lymphoid cells (ILC2s) and multipotent progenitor type 2 (MPP(type2)) cells in kidney. IL-25-responsive ILC2 and MPP(type2) cells produced greater amounts of Th2 cytokines that associated with the induction of M2 macrophages and suppression of classically activated (M1) macrophages in vitro. Finally, adoptive transfer of ILC2s or MPP(type2) cells not only reduced renal functional and histologic injury in IRI mice but also induced M2 macrophages in kidney. In conclusion, our data identify a mechanism whereby IL-25-elicited ILC2 and MPP(type2) cells regulate macrophage phenotype in kidney and prevent renal IRI.
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Affiliation(s)
- Qingsong Huang
- Research Center for Immunology, Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
| | - Zhiguo Niu
- Research Center for Immunology, Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
| | - Jing Tan
- Department of Nephrology, Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Jun Yang
- Department of Nephrology, First Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; and
| | - Yun Liu
- Department of Nephrology, First Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; and
| | - Haijun Ma
- Department of Nephrology, First Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; and
| | - Vincent W S Lee
- Centre for Transplant and Renal Research, Westmead Millennium Institute, University of Sydney, Sydney, New South Wales, Australia
| | - Shuming Sun
- Research Center for Immunology, Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
| | - Xiangfeng Song
- Research Center for Immunology, Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
| | - Minghao Guo
- Department of Nephrology, First Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; and
| | - Yiping Wang
- Centre for Transplant and Renal Research, Westmead Millennium Institute, University of Sydney, Sydney, New South Wales, Australia
| | - Qi Cao
- Research Center for Immunology, Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang, China; Centre for Transplant and Renal Research, Westmead Millennium Institute, University of Sydney, Sydney, New South Wales, Australia
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10
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Cao Q, Wang Y, Wang XM, Lu J, Lee VWS, Ye Q, Nguyen H, Zheng G, Zhao Y, Alexander SI, Harris DCH. Renal F4/80+ CD11c+ mononuclear phagocytes display phenotypic and functional characteristics of macrophages in health and in adriamycin nephropathy. J Am Soc Nephrol 2014; 26:349-63. [PMID: 25012165 DOI: 10.1681/asn.2013121336] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Conventional markers of macrophages (Mфs) and dendritic cells (DCs) lack specificity and often overlap, leading to confusion and controversy regarding the precise function of these cells in kidney and other diseases. This study aimed to identify the phenotype and function of renal mononuclear phagocytes (rMPs) expressing key markers of both Mфs and DCs. F4/80(+)CD11c(+) cells accounted for 45% of total rMPs in normal kidneys and in those from mice with Adriamycin nephropathy (AN). Despite expression of the DC marker CD11c, these double-positive rMPs displayed the features of Mфs, including Mф-like morphology, high expression of CD68, CD204, and CD206, and high phagocytic ability but low antigen-presenting ability. F4/80(+)CD11c(+) cells were found in the cortex but not in the medulla of the kidney. In AN, F4/80(+)CD11c(+) cells displayed an M1 Mф phenotype with high expression of inflammatory mediators and costimulatory factors. Adoptive transfer of F4/80(+)CD11c(+) cells separated from diseased kidney aggravated renal injury in AN mice. Furthermore, adoptive transfer of common progenitors revealed that kidney F4/80(+)CD11c(+) cells were derived predominantly from monocytes, but not from pre-DCs. In conclusion, renal F4/80(+)CD11c(+) cells are a major subset of rMPs and display Mф-like phenotypic and functional characteristics in health and in AN.
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Affiliation(s)
- Qi Cao
- Centre for Transplant and Renal Research and
| | - Yiping Wang
- Centre for Transplant and Renal Research and
| | - Xin Maggie Wang
- Flow Cytometry Facility, Westmead Millennium Institute, University of Sydney, Sydney, New South Wales, Australia; and
| | - Junyu Lu
- Centre for Transplant and Renal Research and
| | | | - Qianling Ye
- Centre for Transplant and Renal Research and
| | - Hanh Nguyen
- Centre for Transplant and Renal Research and
| | | | - Ye Zhao
- Centre for Transplant and Renal Research and
| | - Stephen I Alexander
- Centre for Kidney Research, Children's Hospital at Westmead, Sydney, New South Wales, Australia
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11
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Failed renoprotection by alternatively activated bone marrow macrophages is due to a proliferation-dependent phenotype switch in vivo. Kidney Int 2013; 85:794-806. [PMID: 24048378 DOI: 10.1038/ki.2013.341] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 06/18/2013] [Accepted: 07/03/2013] [Indexed: 11/08/2022]
Abstract
Alternatively activated macrophages (M2) regulate immune responses and ex vivo polarized splenic M2 are able to ameliorate renal injury including models of renal disease, such as adriamycin nephropathy. Whether M2 derived from other organs have similar protective efficacy is unknown. Here, we report adoptively transferred bone marrow M2 macrophages did not improve renal function or reduce renal injury in adriamycin nephropathy, whereas splenic M2 macrophages were protective. Bone marrow and splenic M2 macrophages showed similar regulatory phenotypes and suppressive functions in vitro. Within the inflamed kidney, suppressive phenotypes in bone marrow but not in splenic M2 macrophages, were dramatically reduced. Loss of the suppressive phenotype in bone marrow M2 was related to strong proliferation of bone marrow M2. Bone marrow M2 proliferation in vivo correlated with M-CSF expression by tubular cells in the inflamed kidney. Inhibition of M-CSF in vitro limited bone marrow M2 proliferation and prevented switch of phenotype. Proliferating cells derived from transfused bone marrow M2 were inflammatory rather than regulatory in their phenotype and function. Thus bone marrow in contrast to splenic M2 macrophages do not protect against renal structural and functional injury in murine adriamycin nephropathy. The failed renoprotection of bone marrow M2 is due to the switch of transfused M2 macrophages from a regulatory to an inflammatory phenotype.
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12
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Systemically administered gp100 encoding DNA vaccine for melanoma using water-in-oil-in-water multiple emulsion delivery systems. Int J Pharm 2013; 453:400-7. [DOI: 10.1016/j.ijpharm.2013.05.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2012] [Revised: 04/19/2013] [Accepted: 05/14/2013] [Indexed: 12/15/2022]
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13
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Liu Y, Xiong L, Chang Y, Tang J, Ang W, Yang T, Pi W, Yang X, Ye W, Luo Y, Wang Z. Phosphoinositide 3-kinase δ/γ inhibition does not prevent concanavalin A-induced hepatitis. Mol Med Rep 2013; 8:1305-10. [PMID: 23969545 DOI: 10.3892/mmr.2013.1649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Accepted: 07/12/2013] [Indexed: 02/05/2023] Open
Abstract
An increasing number of studies have suggested that phosphoinositide 3-kinase-γ (PI3Kγ) and PI3Kδ are involved in the pathogenesis of autoimmune and inflammatory diseases, such as asthma and atherosclerosis. However, the underlying mechanism of acute hepatitis remains unknown. The present study aimed to determine the effect of PI3Kδ/γ inhibition on hepatic injury in a murine model of hepatitis induced by concanavalin A (ConA). It was demonstrated that the pharmacological inhibition of PI3Kδ/γ by TG100-115 did not prevent liver damage following ConA challenge. Furthermore, the PI3Kδ/γ inhibition resulted in elevated transaminase activity in the serum, aggravated hepatic lesions characterized by hepatic necrosis, increased inflammatory cell infiltration and apoptosis of hepatocytes. Survival tests demonstrated that TG100-115 significantly increased the death rate of mice following ConA challenge. In addition, TG100-115 increased the serum levels of the proinflammatory cytokine IL-2 following ConA injection. These results may oppose the development of PI3Kδ/γ inhibitors as therapeutic agents, particularly for the treatment of human hepatitis.
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Affiliation(s)
- Yuanyuan Liu
- State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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14
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Multi-Compartmental Vaccine Delivery System for Enhanced Immune Response to gp100 Peptide Antigen in Melanoma Immunotherapy. Pharm Res 2012; 29:3393-403. [DOI: 10.1007/s11095-012-0834-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Accepted: 07/09/2012] [Indexed: 12/28/2022]
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15
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Lipopolysaccharide-pretreated plasmacytoid dendritic cells ameliorate experimental chronic kidney disease. Kidney Int 2012; 81:892-902. [PMID: 22318423 PMCID: PMC3325597 DOI: 10.1038/ki.2011.471] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Plasmacytoid dendritic cells play important roles in inducing immune tolerance, preventing allograft rejection, and regulating immune responses in both autoimmune disease and graft-versus-host disease. In order to evaluate a possible protective effect of plasmacytoid dendritic cells against renal inflammation and injury, we purified these cells from mouse spleens and adoptively transferred lipopolysaccharide (LPS)-treated cells, modified ex vivo, into mice with adriamycin nephropathy. These LPS-treated cells localized to the kidney cortex and the lymph nodes draining the kidney, and protected the kidney from injury during adriamycin nephropathy. Glomerulosclerosis, tubular atrophy, interstitial expansion, proteinuria, and creatinine clearance were significantly reduced in mice with adriamycin nephropathy subsequently treated with LPS-activated plasmacytoid dendritic cells as compared to the kidney injury in mice given naive plasmacytoid dendritic cells. In addition, LPS-pretreated cells, but not naive plasmacytoid dendritic cells, convert CD4+CD25− T cells into Foxp3+ regulatory T cells and suppress the proinflammatory cytokine production of endogenous renal macrophages. This may explain their ability to protect against renal injury in adriamycin nephropathy.
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Wang L, Lin J, Zhou Z, Huo R, Shen B, Sun Y, Li N. Up-regulation of Th17 cells may underlie inhibition of Treg development caused by immunization with activated syngeneic T cells. PLoS One 2011; 6:e27289. [PMID: 22087281 PMCID: PMC3210778 DOI: 10.1371/journal.pone.0027289] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2011] [Accepted: 10/13/2011] [Indexed: 01/21/2023] Open
Abstract
Background Our previous work showed that mice immunized with attenuated activated syngeneic T cells (aTCV) led to damping Treg function which resulted in enhancing anti-tumor immunity. It is well known that DC plays a very important role in controlling Th cell differentiation; whether DC involves Treg attenuation in immunized mice remained unknown. In this study, we provided evidence that increased mature DC (mDC) after immunization with aTCV skewed Th17 differentiation, which resulted in inhibition of Treg differentiation through IL-6 signaling pathway. Principal Findings In the present study, we found that the frequency of mDCs increased dramatically in the immunized mice accompanied by lower Treg cells compared to the controls. Moreover, both DCs and serum derived from the immunized mice suppressed Treg differentiation in vitro, respectively. mDCs generated from bone marrow precursor cells in vitro strongly inhibited Treg development and simultaneously drove Th17 differentiation with elevated IL-6 production. However, PD-L1, a potent Treg inducer did not show effect on Treg down-regulation. Assay with transwell systems showed that cell-cell contact was necessary for IL-6 production to a threshold to activate Th17 transcriptional factor RORγt and to inhibit Treg counterpart Foxp3. Conclusions Our results implicate up-regulated Th17 development might be one of mechanisms of enhancing anti-tumor immunity induced by immunization with aTCV, which provide a novel insight in numerous mechanisms responsible for anti-tumor immunity.
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Affiliation(s)
- Li Wang
- Shanghai Institute of Immunology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
- Department of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Jinpiao Lin
- Shanghai Institute of Immunology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Zhou Zhou
- Shanghai Institute of Immunology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Rongfen Huo
- Shanghai Institute of Immunology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Baihua Shen
- Shanghai Institute of Immunology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Yue Sun
- Shanghai Institute of Immunology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Ningli Li
- Shanghai Institute of Immunology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
- * E-mail:
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17
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Cao Q, Wang C, Zheng D, Wang Y, Lee VWS, Wang YM, Zheng G, Tan TK, Yu D, Alexander SI, Harris DCH, Wang Y. IL-25 induces M2 macrophages and reduces renal injury in proteinuric kidney disease. J Am Soc Nephrol 2011; 22:1229-39. [PMID: 21719780 DOI: 10.1681/asn.2010070693] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
The kidney contains receptors for the cytokine IL-25, but the effects of IL-25 in CKD are unknown. Here, we induced adriamycin nephropathy in both BALB/c mice and severe combined immunodeficient (SCID) mice, and we injected IL-25 for 7 consecutive days starting at day 5 after adriamycin administration. BALB/c mice treated with IL-25 had less glomerulosclerosis, tubular atrophy, interstitial expansion, and proteinuria than control mice at day 28. IL-25 increased the levels of IL-4 and IL-13 in serum, kidney, renal draining lymph nodes, and CD4+ lymphocytes. IL-25 also directly suppressed effector macrophages in vitro and in vivo and induced alternatively activated (M2) macrophages in vivo. However, in SCID mice and in BALB/c mice treated with IL-4/13-neutralizing antibody, IL-25 failed to protect against renal injury and did not induce M2. In conclusion, IL-25 protects against renal injury in adriamycin nephropathy in mice by, at least in part, inducing Th2 immune responses.
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Affiliation(s)
- Qi Cao
- Centre for Transplant and Renal Research, Westmead Millennium Institute, The University of Sydney, Sydney, NSW, Australia
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18
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Zheng D, Wang Y, Cao Q, Lee VWS, Zheng G, Sun Y, Tan TK, Wang Y, Alexander SI, Harris DCH. Transfused macrophages ameliorate pancreatic and renal injury in murine diabetes mellitus. Nephron Clin Pract 2011; 118:e87-99. [PMID: 21311199 DOI: 10.1159/000321034] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Alternatively activated macrophages (M2 macrophages) are able to reduce renal injury in murine adriamycin nephropathy. However, the effect of M2 macrophages in other renal diseases such as diabetic nephropathy remains unknown. METHODS Macrophages were separated from splenocytes and polarized with IL-4 and IL-13 into a protective phenotype. Mice underwent adoptive transfer with M2 macrophages, and then diabetes was induced by tail vein injection with streptozotocin (STZ). Blood glucose levels were monitored daily. Mice were sacrificed at week 10 after STZ. Renal function and histopathological injury were assessed quantitatively. RESULTS Transfused M2 macrophages accumulated progressively in kidneys for up to 10 weeks after STZ. Kidneys from diabetic mice transfused with M2 macrophages had less tubular atrophy, glomerular hypertrophy and interstitial expansion than did control diabetic mice. M2 macrophages suppressed the development of interstitial fibrosis. In addition, the degree of pancreatic islet injury, as assessed by insulin staining, haemoglobin A1c and blood glucose was reduced after transfusion of M2 macrophages. In vivo, activation of kidney endogenous macrophage cytokine expression was inhibited by M2 macrophages. CONCLUSION Our findings show that M2 macrophages can protect against islet and renal injury in streptozotocin-induced diabetes, providing a potential therapeutic strategy for diabetes and diabetic nephropathy.
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Affiliation(s)
- Dong Zheng
- Centre for Transplant and Renal Research, University of Sydney, Westmead Millennium Institute, Sydney, NSW 2145, Australia.
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19
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The imbalance of Th17/Treg in patients with uterine cervical cancer. Clin Chim Acta 2011; 412:894-900. [PMID: 21255562 DOI: 10.1016/j.cca.2011.01.015] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2010] [Revised: 01/07/2011] [Accepted: 01/12/2011] [Indexed: 02/04/2023]
Abstract
BACKGROUND Th17/Treg was reported to play critical roles in immunoregulation, and its imbalance may lead to autoimmune diseases and allergic reactions. Information on Th17/Treg in cancer bearing hosts is still limited. METHODS We examined the expression of IL-17, Foxp3 and IL-10 in uterine cervical cancer (UCC) patients, cervical intraepithelial neoplasia (CIN) patients and healthy controls by flow cytometry and enzyme-linked immunosorbent assay. Interleukin (IL)-17-producing CD4+ cells as Th17 and CD4+CD25+Foxp3+ cells as Treg were expressed as a percentage of the total CD4+ cells. RESULTS Compared with controls, patients with UCC or CIN had a higher proportion of Th17 cells. UCC patients also revealed a significant increase in Treg number and IL-17 and IL-10 concentrations in plasma, while CIN patients did not. Notably, in UCC patients, the increased Th17 prevalence was associated with clinical stage, lymph node metastases and vasoinvasion, while the increased Treg frequency was associated with tumor differentiation. Remarkably, an attractive imbalance of Th17/Treg was observed in UUC and CIN patients. Furthermore, in UCC patients with lymph node metastases or vasoinvasion, the ratio of Th17/Treg was significantly higher than that in negative patients respectively. CONCLUSIONS Our results indicated a possible role of Th17 in UCC patients correlated to Treg cells, and the imbalance of Th17/Treg may be involved in the development and progression of UCC.
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20
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Curcumin reverses T cell-mediated adaptive immune dysfunctions in tumor-bearing hosts. Cell Mol Immunol 2010; 7:306-15. [PMID: 20305684 DOI: 10.1038/cmi.2010.11] [Citation(s) in RCA: 139] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Immune dysfunction is well documented during tumor progression and likely contributes to tumor immune evasion. CD8(+) cytotoxic T lymphocytes (CTLs) are involved in antigen-specific tumor destruction and CD4(+) T cells are essential for helping this CD8(+) T cell-dependent tumor eradication. Tumors often target and inhibit T-cell function to escape from immune surveillance. This dysfunction includes loss of effector and memory T cells, bias towards type 2 cytokines and expansion of T regulatory (Treg) cells. Curcumin has previously been shown to have antitumor activity and some research has addressed the immunoprotective potential of this plant-derived polyphenol in tumor-bearing hosts. Here we examined the role of curcumin in the prevention of tumor-induced dysfunction of T cell-based immune responses. We observed severe loss of both effector and memory T-cell populations, downregulation of type 1 and upregulation of type 2 immune responses and decreased proliferation of effector T cells in the presence of tumors. Curcumin, in turn, prevented this loss of T cells, expanded central memory T cell (T(CM))/effector memory T cell (T(EM)) populations, reversed the type 2 immune bias and attenuated the tumor-induced inhibition of T-cell proliferation in tumor-bearing hosts. Further investigation revealed that tumor burden upregulated Treg cell populations and stimulated the production of the immunosuppressive cytokines transforming growth factor (TGF)-beta and IL-10 in these cells. Curcumin, however, inhibited the suppressive activity of Treg cells by downregulating the production of TGF-beta and IL-10 in these cells. More importantly, curcumin treatment enhanced the ability of effector T cells to kill cancer cells. Overall, our observations suggest that the unique properties of curcumin may be exploited for successful attenuation of tumor-induced suppression of cell-mediated immune responses.
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21
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Cao Q, Wang Y, Zheng D, Sun Y, Wang Y, Lee VWS, Zheng G, Tan TK, Ince J, Alexander SI, Harris DCH. IL-10/TGF-beta-modified macrophages induce regulatory T cells and protect against adriamycin nephrosis. J Am Soc Nephrol 2010; 21:933-42. [PMID: 20299353 DOI: 10.1681/asn.2009060592] [Citation(s) in RCA: 206] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
IL-10/TGF-beta-modified macrophages, a subset of activated macrophages, produce anti-inflammatory cytokines, suggesting that they may protect against inflammation-mediated injury. Here, macrophages modified ex vivo by IL-10/TGF-beta (IL-10/TGF-beta Mu2) significantly attenuated renal inflammation, structural injury, and functional decline in murine adriamycin nephrosis (AN). These cells deactivated effector macrophages and inhibited CD4+ T cell proliferation. IL-10/TGF-beta Mu2 expressed high levels of the regulatory co-stimulatory molecule B7-H4, induced regulatory T cells from CD4+CD25- T cells in vitro, and increased the number of regulatory T cells in lymph nodes draining the kidneys in AN. The phenotype of IL-10/TGF-beta Mu2 did not switch to that of effector macrophages in the inflamed kidney, and these cells did not promote fibrosis. Taken together, these data demonstrate that IL-10/TGF-beta-modified macrophages effectively protect against renal injury in AN and may become part of a therapeutic strategy for chronic inflammatory disease.
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Affiliation(s)
- Qi Cao
- Centre for Transplantation and Renal Research, University of Sydney, Westmead Millennium Institute, and Centre for Kidney Research, Children's Hospital at Westmead, Level 2 Block D, Darcy Road, Westmead, New South Wales, Australia
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22
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Nizar S, Meyer B, Galustian C, Kumar D, Dalgleish A. T regulatory cells, the evolution of targeted immunotherapy. Biochim Biophys Acta Rev Cancer 2010; 1806:7-17. [PMID: 20188145 DOI: 10.1016/j.bbcan.2010.02.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2009] [Revised: 02/15/2010] [Accepted: 02/17/2010] [Indexed: 01/09/2023]
Abstract
T regulatory cells are able to suppress anti-tumour immunity in pre-clinical models and in patients. This review highlights the important discoveries in Treg immunology critical to the evolution of targeted immunotherapy. We also describe the therapeutic applications that are currently being assessed and their future potential.
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Affiliation(s)
- S Nizar
- Department of Cellular and Molecular Medicine, St George's University of London, UK
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23
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Brahmachari S, Pahan K. Suppression of regulatory T cells by IL-12p40 homodimer via nitric oxide. THE JOURNAL OF IMMUNOLOGY 2009; 183:2045-58. [PMID: 19587012 DOI: 10.4049/jimmunol.0800276] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Regulatory T cells (Tregs) play a pivotal role in the maintenance of homeostasis between immune response and immune tolerance. The transcription factor Foxp3 and the surface protein CD25 are the two key molecules characterizing Tregs. In autoimmune and various other chronic inflammatory diseases, the expression of Foxp3 is severely down-regulated. However, the molecular mechanism underlying the down-regulation of Foxp3 is not understood yet. Because the IL-12p40 homodimer (p40(2)) is markedly up-regulated in response to various inflammatory stimuli, the present study was undertaken to explore the role of p40(2) in the regulation of Foxp3 in naive mouse splenocytes. IL-12p40(2) dose-dependently inhibited the expression of Foxp3 and CD25, but not CD4. Interestingly, this inhibition was absent in splenocytes of IL-12Rbeta1(-/-), but not IL-12Rbeta2(-/-), mice. Moreover, suppression of Foxp3 in wild-type and IL-12Rbeta2(-/-) splenocytes was accompanied by production of NO. Consistently, l-N(6)-(1-iminoethyl)-lysine hydrochloride, an inhibitor of inducible NO synthase (iNOS), and PTIO, a scavenger of NO, restored the expression of Foxp3 and CD25 in p40(2)-stimulated splenocytes, and p40(2) was unable to down-regulate Foxp3 and CD25 in splenocytes from iNOS(-/-) mice. Furthermore, NO, but not p40(2), was able to inhibit Foxp3 in purified CD4(+)CD25(+) T cells in the absence of iNOS-expressing cells. Hence, our results clearly demonstrate that p40(2) induces NO production via IL-12Rbeta1 and that NO subsequently suppresses Tregs in naive mouse splenocytes. This study, therefore, delineates an unprecedented biological function of p40(2) in the regulation of Foxp3 via IL-12Rbeta1-mediated NO production.
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Affiliation(s)
- Saurav Brahmachari
- Department of Neurological Sciences, Rush University Medical Center, Chicago, IL 60612, USA
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24
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Li W, Li B, Fan W, Geng L, Li X, Li L, Huang Z, Li S. CTLA4Ig gene transfer alleviates abortion in mice by expanding CD4+CD25+ regulatory T cells and inducing indoleamine 2,3-dioxygenase. J Reprod Immunol 2009; 80:1-11. [PMID: 19362742 DOI: 10.1016/j.jri.2008.11.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2008] [Revised: 11/10/2008] [Accepted: 11/17/2008] [Indexed: 02/05/2023]
Abstract
Successful pregnancy requires a state of immunological tolerance since normally the maternal immune system does not reject the semi-allogeneic conceptus. Cytotoxic T lymphocyte-associated antigen-4 (CTLA-4), a ligand for B7, delivers negative signals to antigen presenting cells (APCs) to compete with CD28 for binding to B7 molecules and down-regulate proinflammatory responses, thus inhibiting T cell activation. Using CBA/J x DBA/2 matings as an abortion-prone model, we observed that adenovirus-mediated CTLA4Ig (Ad-CTLA4Ig) gene transfer improves pregnancy outcome. Ad-CTLA4Ig therapy skewed the ability of serum cytokine production toward a Th2 bias. Flow cytometry revealed that Ad-CTLA4Ig administration expanded peripheral CD4(+)CD25(+) regulatory T cell populations in CBA/J x DBA/2 matings. Furthermore, Ad-CTLA4Ig administration induced indoleamine 2,3-dioxygenase (IDO) and Foxp3 mRNA expression at the materno-fetal interface. Our results demonstrate that adenovirus-mediated CTLA4Ig gene transfer improves pregnancy outcome in a murine model of abortion by expanding the CD4(+)CD25(+) regulatory T cell population and inducing IDO mRNA expression.
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Affiliation(s)
- Weihong Li
- Department of Obstetrics and Gynecology, Center of Reproductive Medicine, The Second West China Hospital, Sichuan University, Sichuan Province 610041, China
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25
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Zhang Y, Wang L, Li D, Li N. Taming regulatory T cells by autologous T cell immunization: a potential new strategy for cancer immune therapy. Int Immunopharmacol 2009; 9:593-5. [PMID: 19539563 DOI: 10.1016/j.intimp.2009.01.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2009] [Accepted: 01/22/2009] [Indexed: 10/21/2022]
Abstract
Regulatory T cells (Tregs) play important roles in the maintenance of immune homeostasis, and is also involved in tumor immune tolerance. Dampening or elimination of Treg functions has been shown to lead to enhanced immune responses against tumors, and thus inhibition of tumor growth. Recently, we have developed a new immunization scheme, referred to as irradiated mitogen-activated autologous T cell vaccination (ATCV), and shown that such immunization could significantly enhance anti-tumor immunity in vivo. Mechanistically, the enhanced anti-tumor response appears to be due to reduced Treg functions and inhibition of activation-induced cell death (AICD) in effector T cells. Thus, ATCV may constitute a novel strategy in cancer immune therapy.
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Affiliation(s)
- Yan Zhang
- Shanghai Institute of Immunology, Institute of Medical Science, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
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26
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Ron-Harel N, Segev Y, Lewitus GM, Cardon M, Ziv Y, Netanely D, Jacob-Hirsch J, Amariglio N, Rechavi G, Domany E, Schwartz M. Age-dependent spatial memory loss can be partially restored by immune activation. Rejuvenation Res 2009; 11:903-13. [PMID: 18803478 DOI: 10.1089/rej.2008.0755] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Aging is often associated with a decline in hippocampus-dependent spatial memory. Here, we show that functional cell-mediated immunity is required for the maintenance of hippocampus-dependent spatial memory. Sudden imposition of immune compromise in young mice caused spatial memory impairment, whereas immune reconstitution reversed memory deficit in immune-deficient mice. Analysis of hippocampal gene expression suggested that immune-dependent spatial memory performance was associated with the expression of insulin-like growth factor (Igf1) and of genes encoding proteins related to presynaptic activity (Syt10, Cplx2). We further showed that memory loss in aged mice could be attributed to age-related attenuation of the immune response and could be reversed by immune system activation. Homeostatic-driven proliferation of lymphocytes, which expands the existing T cell repertoire, restored spatial memory deficits in aged mice. Thus, our results identify a novel function of the immune system in the maintenance of spatial memory and suggest an original approach for arresting or reversing age-associated memory loss.
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Affiliation(s)
- N Ron-Harel
- Department of Neurobiology, The Weizmann Institute of Science, Rehovot, Israel
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