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Chyuan IT, Liao HJ, Tan TH, Chuang HC, Chu YC, Pan MH, Wu CS, Chu CL, Sheu BC, Hsu PN. Association of TRAIL receptor with phosphatase SHP-1 enables repressing T cell receptor signaling and T cell activation through inactivating Lck. J Biomed Sci 2024; 31:33. [PMID: 38532423 DOI: 10.1186/s12929-024-01023-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Accepted: 03/19/2024] [Indexed: 03/28/2024] Open
Abstract
BACKGROUND T cell receptor (TCR) signaling and T cell activation are tightly regulated by gatekeepers to maintain immune tolerance and avoid autoimmunity. The TRAIL receptor (TRAIL-R) is a TNF-family death receptor that transduces apoptotic signals to induce cell death. Recent studies have indicated that TRAIL-R regulates T cell-mediated immune responses by directly inhibiting T cell activation without inducing apoptosis; however, the distinct signaling pathway that regulates T cell activation remains unclear. In this study, we screened for intracellular TRAIL-R-binding proteins within T cells to explore the novel signaling pathway transduced by TRAIL-R that directly inhibits T cell activation. METHODS Whole-transcriptome RNA sequencing was used to identify gene expression signatures associated with TRAIL-R signaling during T cell activation. High-throughput screening with mass spectrometry was used to identify the novel TRAIL-R binding proteins within T cells. Co-immunoprecipitation, lipid raft isolation, and confocal microscopic analyses were conducted to verify the association between TRAIL-R and the identified binding proteins within T cells. RESULTS TRAIL engagement downregulated gene signatures in TCR signaling pathways and profoundly suppressed phosphorylation of TCR proximal tyrosine kinases without inducing cell death. The tyrosine phosphatase SHP-1 was identified as the major TRAIL-R binding protein within T cells, using high throughput mass spectrometry-based proteomics analysis. Furthermore, Lck was co-immunoprecipitated with the TRAIL-R/SHP-1 complex in the activated T cells. TRAIL engagement profoundly inhibited phosphorylation of Lck (Y394) and suppressed the recruitment of Lck into lipid rafts in the activated T cells, leading to the interruption of proximal TCR signaling and subsequent T cell activation. CONCLUSIONS TRAIL-R associates with phosphatase SHP-1 and transduces a unique and distinct immune gatekeeper signal to repress TCR signaling and T cell activation via inactivating Lck. Thus, our results define TRAIL-R as a new class of immune checkpoint receptors for restraining T cell activation, and TRAIL-R/SHP-1 axis can serve as a potential therapeutic target for immune-mediated diseases.
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Affiliation(s)
- I-Tsu Chyuan
- School of Medicine, National Tsing Hua University, Hsinchu, 30013, Taiwan
- Department of Medical Research, Cathay General Hospital, Taipei, 10630, Taiwan
- Department of Internal Medicine, Cathay General Hospital, Taipei, 10630, Taiwan
| | - Hsiu-Jung Liao
- Department of Medical Research, Far Eastern Memorial Hospital, New Taipei City, Taipei, 22000, Taiwan
- Institute of Biopharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei, 112304, Taiwan
| | - Tse-Hua Tan
- Immunology Research Center, National Health Research Institutes, Zhunan, 35053, Taiwan
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Huai-Chia Chuang
- Immunology Research Center, National Health Research Institutes, Zhunan, 35053, Taiwan
| | - Yu-Chuan Chu
- Department of Medical Research, Cathay General Hospital, Taipei, 10630, Taiwan
| | - Meng-Hsun Pan
- Department of Medical Research, Cathay General Hospital, Taipei, 10630, Taiwan
| | - Chien-Sheng Wu
- Department of Internal Medicine, Far Eastern Memorial Hospital, New Taipei City, Taipei, 22000, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, 10051, Taiwan
| | - Bor-Ching Sheu
- Department of Obstetrics and Gynecology, College of Medicine, National Taiwan University Hospital, National Taiwan University, Taipei, 10002, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, 10051, Taiwan
| | - Ping-Ning Hsu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, 10051, Taiwan.
- Department of Internal Medicine and Graduate Institute of Immunology, College of Medicine, National Taiwan University, 1 Jen-Ai Rd., Sec. 1, Taipei, 10051, Taiwan.
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, 10002, Taiwan.
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Hsiao PY, Huang RY, Huang LW, Chu CL, Dyke TV, Mau LP, Cheng CD, Sung CE, Weng PW, Wu YC, Shieh YS, Cheng WC. MyD88 exacerbates inflammation-induced bone loss by modulating dynamic equilibrium between Th17/Treg cells and subgingival microbiota dysbiosis. J Periodontol 2024. [PMID: 38523602 DOI: 10.1002/jper.23-0561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 02/16/2024] [Accepted: 02/23/2024] [Indexed: 03/26/2024]
Abstract
BACKGROUND This study aimed to investigate the contribution of myeloid differentiation primary-response gene 88 (MyD88) on the differentiation of T helper type 17 (Th17) and regulatory T (Treg) cells and the emerging subgingival microbiota dysbiosis in Porphyromonas gingivalis-induced experimental periodontitis. METHODS Alveolar bone loss, infiltrated inflammatory cells, immunostained cells for tartrate-resistant acid phosphatase (TRAP), the receptor activator of nuclear factor-kB ligand (RANKL), and osteoprotegerin (OPG) were quantified by microcomputerized tomography and histological staining between age- and sex-matched homozygous littermates (wild-type [WT, Myd88+/+] and Myd88-/- on C57BL/6 background). The frequencies of Th17 and Treg cells in cervical lymph nodes (CLNs) and spleen were determined by flow cytometry. Cytokine expression in gingival tissues, CLNs, and spleens were studied by quantitative polymerase chain reaction (qPCR). Analysis of the composition of the subgingival microbiome and functional annotation of prokaryotic taxa (FAPROTAX) analysis were performed. RESULTS P. gingivalis-infected Myd88-/- mice showed alleviated bone loss, TRAP+ osteoclasts, and RANKL/OPG ratio compared to WT mice. A significantly higher percentage of Foxp3+CD4+ T cells in infected Myd88-/- CLNs and a higher frequency of RORγt+CD4+ T cells in infected WT mice was noted. Increased IL-10 and IL-17a expressions in gingival tissue at D14-D28 then declined in WT mice, whereas an opposite pattern was observed in Myd88-/- mice. The Myd88-/- mice exhibited characteristic increases in gram-positive species and species having probiotic properties, while gram-negative, anaerobic species were noted in WT mice. FAPROTAX analysis revealed increased aerobic chemoheterotrophy in Myd88-/- mice, whereas anaerobic chemoheterotrophy was noted in WT mice after P. gingivalis infection. CONCLUSIONS MyD88 plays an important role in inflammation-induced bone loss by modulating the dynamic equilibrium between Th17/Treg cells and dysbiosis in P. gingivalis-induced experimental periodontitis.
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Affiliation(s)
- Po-Yan Hsiao
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Ren-Yeong Huang
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
- Department of Periodontology, School of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
- Graduate Institute of Dental Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Lin-Wei Huang
- Graduate Institute of Microbiology and Immunology, National Defense Medical Center, Taipei, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Thomas Van Dyke
- Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts, USA
- Department of Applied Oral Sciences, The Forsyth Institute, Cambridge, Massachusetts, USA
| | - Lian-Ping Mau
- Department of Periodontics, Chi Mei Medical Center, Tainan, Taiwan
| | - Chia-Dan Cheng
- Department of Periodontology, School of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
- Graduate Institute of Dental Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Cheng-En Sung
- Department of Periodontology, School of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
- Graduate Institute of Dental Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Pei-Wei Weng
- Department of Orthopaedics, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Department of Orthopaedics, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yu-Chiao Wu
- Graduate Institute of Dental Sciences, National Defense Medical Center, Taipei, Taiwan
- Department of Operative Dentistry and Endodontics, School of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
| | - Yi-Shing Shieh
- Graduate Institute of Dental Sciences, National Defense Medical Center, Taipei, Taiwan
- Department of Operative Dentistry and Endodontics, School of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
| | - Wan-Chien Cheng
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
- Department of Periodontology, School of Dentistry, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
- Graduate Institute of Dental Sciences, National Defense Medical Center, Taipei, Taiwan
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Li JP, Chu CL, Chao WR, Yeh CS, Lee YJ, Chen DC, Yang SF, Chao YH. Ling Zhi-8, a fungal immunomodulatory protein in Ganoderma lucidum, alleviates CPT-11-induced intestinal injury via restoring claudin-1 expression. Aging (Albany NY) 2023; 15:3621-3634. [PMID: 37155145 PMCID: PMC10449289 DOI: 10.18632/aging.204695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 04/18/2023] [Indexed: 05/10/2023]
Abstract
CPT-11 (Irinotecan) remains an important chemotherapeutic agent against various solid tumors nowadays. Potential adverse effects, especially gastrointestinal toxicities, are the main limiting factor for its clinical utility. Ling Zhi-8 (LZ-8), a fungal immunomodulatory protein in Ganoderma lucidum mycelia, has potential for drug development due to its multiple bioactivities and functions. This study aimed to explore the influence of LZ-8 on CPT-11-treated IEC-6 cells in vitro and on mice with CPT-11-induced intestinal injury in vivo. The mechanism through which LZ-8 exerted its protective effects was also investigated. In the in vitro study, the viability and claudin-1 expression of IEC-6 cells decreased gradually with increasing concentrations of CPT-11, but LZ-8 treatment had no obvious influence on their viability, morphology, and claudin-1 expression. Pretreatment of LZ-8 significantly improved CPT-11-decreased cell viability and claudin-1 expression in IEC-6 cells. In mice with CPT-11-induced intestinal injury, LZ-8 treatment could ameliorate symptoms and mitigate intestinal damage. Meanwhile, LZ-8 restored claudin-1 expression in the intestinal membranes in CPT-11-treated mice. Collectively, our results demonstrated the protective effects of LZ-8 against CPT-11 damage in both IEC-6 cells and mice. LZ-8 can restore claudin-1 expression in intestinal cells following CPT-11 treatment, suggesting the role of claudin-1 in the scenario.
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Affiliation(s)
- Ju-Pi Li
- Department of Pediatrics, Chung Shan Medical University Hospital, Taichung, Taiwan
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Wan-Ru Chao
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Pathology, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Cheng-Siang Yeh
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Yi-Ju Lee
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Pathology, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Dz-Chi Chen
- Yeastern Biotech Co., Ltd., New Taipei City, Taiwan
| | - Shun-Fa Yang
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Yu-Hua Chao
- Department of Pediatrics, Chung Shan Medical University Hospital, Taichung, Taiwan
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Clinical Pathology, Chung Shan Medical University Hospital, Taichung, Taiwan
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Shen YC, Yeh CP, Jin L, Chang NW, Hsu CL, Ou DL, Chu CL, Cheng AL. Effects of prophylactic high and low doses of corticosteroid on the efficacy of immune checkpoint blockade in murine hepatocellular carcinoma models. J Clin Oncol 2022. [DOI: 10.1200/jco.2022.40.16_suppl.e14596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e14596 Background: Immune-related adverse events (irAEs) are major hurdle to immune checkpoint blockade (ICB). Corticosteroid (CS) is effective in controlling the majority of irAEs. Although recent studies suggested CS use does not jeopardize the anti-tumor efficacy of ICB, prophylactic use of CS remains prohibited with the concerns of attenuating efficacy of ICB. This study aimed to investigate the effects of CS premedication on the efficacy of ICB in murine hepatocellular carcinoma models. Methods: Anti-mCTLA-4 (9D9C, BMS) and anti-mPD-1 antibodies (4H2, ONO) were intraperitoneally (ip) administered to tumor-bearing mice (subcutaneous Hepa 1-6 model and orthotopic BNL 1MEA.7R.1 model) with or without dexamethasone (DEXA) premedication (10 and 200 μg, equivalent to minimal anti-inflammatory dosage and pulse therapy in human, respectively). Efficacy of ICB was evaluated as tumor shrinkage. Tumor-infiltrating lymphocytes (TILs) were isolated for single cell RNA-sequencing and effector function analysis through flow cytometry. Results: In the subcutaneous model, all tumors treated with ICB alone (N=7) or ICB plus DEXA 10 μg (N=5) completely regressed, but 1 out of 7 tumors treated with ICB plus DEXA 200 μg escaped. However, the tumor growth was not significantly different between groups ( P-value >0.05, multiple Mann-Whitney test). In the orthotopic model (N=5/group), the mean (± standard error) tumor weights on day 21 after tumor implantation for isotype control, ICB, ICB plus DEXA 10 μg and ICB plus DEXA 200 μg were 2.45 (± 0.54), 0.73 (± 0.18), 0.98 (± 0.65), and 0.69 (± 0.17) grams, respectively ( P-value >0.05, comparing ICB plus DEXA 10 or 200 μg with ICB). At transcriptomic level, premedication with either dosage of DEXA significantly reduced the percentage of effector memory cells and increased the percentage of exhausted effector cells in the CD8 TIL population, which appeared to counterbalance the effects of ICB. However, at protein level, premedication of DEXA 10 or 200 μg did not reduce the interferon-γ or granzyme B production of CD8 TILs in both models (Table). Conclusions: CS premedication did not attenuate the efficacy of ICB. Our study provides the scientific basis to evaluate the potential of prophylactic CS in preventing ICB-induced irAEs in clinical studies.[Table: see text]
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Affiliation(s)
- Ying-Chun Shen
- Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan
| | - Ching-Ping Yeh
- Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan
| | - Lu Jin
- Department of Medical Oncology, National Taiwan University Cancer Center, Taipei, Taiwan
| | - Nai-Wen Chang
- Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan
| | - Chia-Lang Hsu
- Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan
| | - Da-Liang Ou
- Graduate Institute of Oncology, School of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology, School of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ann-Lii Cheng
- National Taiwan University Cancer Center, Taipei, Taiwan
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Liao HJ, Chu CL, Wang SC, Lee HY, Wu CS. Increased HIF-1α expression in T cells and associated with enhanced Th17 pathway in systemic lupus erythematosus. J Formos Med Assoc 2022; 121:2446-2456. [DOI: 10.1016/j.jfma.2022.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 04/29/2022] [Accepted: 05/04/2022] [Indexed: 01/05/2023] Open
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Chyuan IT, Chu CL, Hsu CL, Pan MH, Liao HJ, Wu CS, Hsu PN. T Cell-Specific Deletion of TRAIL Receptor Reveals Its Critical Role for Regulating Pathologic T Cell Activation and Disease Induction in Experimental Autoimmune Encephalomyelitis. J Immunol 2022; 208:1534-1544. [PMID: 35264458 DOI: 10.4049/jimmunol.2100788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 12/27/2021] [Indexed: 06/14/2023]
Abstract
Recent evidence from several autoimmune animal models has demonstrated that TRAIL suppresses the activation of T cells and inhibits autoimmune inflammation via an apoptosis-independent pathway. However, it remains unclear whether the immunosuppressive effects of TRAIL are dependent on its direct effects on T cells or on other immune cells to regulate T cells for the induction of disease. Therefore, we generated mice with T cell-specific TRAIL receptor (TRAIL-R) conditional knockout to investigate the impact of TRAIL on autoimmune inflammation and disease induction in experimental autoimmune encephalomyelitis (EAE). T cell-specific TRAIL-R knockout mice were found to completely reverse the TRAIL-mediated suppression of inflammation and disease induction, indicating that TRAIL-R on T cells is essential for TRAIL-mediated suppression of inflammation and disease induction in EAE. Moreover, the immune suppression effects were not due to the induction of cell apoptosis, but to the direct inhibition of T cell activation. In addition, RNA sequencing and transcriptome analysis revealed that TRAIL-R signaling significantly downregulated the genes involved in TCR signaling pathways, T cell differentiation, and proinflammatory cytokines. These results indicate that TRAIL-R on T cells is critical for pathologic T cell activation and induction of inflammation in EAE, suggesting that TRAIL-R serves as a novel immune checkpoint receptor in T cell-mediated autoimmune diseases.
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Affiliation(s)
- I-Tsu Chyuan
- Department of Internal Medicine, Cathay General Hospital, Taipei, Taiwan
- Department of Medical Research, Cathay General Hospital, Taipei, Taiwan
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
- School of Medicine, National Tsing Hua University, Hsinchu, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chia-Lang Hsu
- Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan
| | - Meng-Hsun Pan
- Department of Internal Medicine, Cathay General Hospital, Taipei, Taiwan
- Department of Medical Research, Cathay General Hospital, Taipei, Taiwan
| | - Hsiu-Jung Liao
- Department of Orthopedic Surgery, Far Eastern Memorial Hospital, New Taipei City, Taiwan
| | - Chien-Sheng Wu
- Department of Internal Medicine, Far Eastern Memorial Hospital, New Taipei City, Taiwan
| | - Ping-Ning Hsu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan;
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan; and
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
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Chen YH, Shin JY, Wei HM, Lin CC, Yu LCH, Liao WT, Chen DC, Chu CL. Prevention of dextran sulfate sodium-induced mouse colitis by the fungal protein Ling Zhi-8 via promoting the barrier function of intestinal epithelial cells. Food Funct 2021; 12:1639-1650. [PMID: 33481975 DOI: 10.1039/d0fo02604b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The fungal immunomodulatory protein Ling Zhi-8 (LZ-8) isolated from Ganoderma lucidum (GL) regulates immune cells and inhibits tumor growth; however, the role of LZ-8 in protecting intestinal epithelial cells (IECs) is unknown. In this study, we aim to investigate the functional effect of LZ-8 on IECs. LZ-8 effectively rescued the pro-inflammatory cytokine-induced loss of tight junctions (TJs) by enhancing transepithelial electrical resistance (TEER), reducing permeability, and maintaining the distribution of TJ proteins, in Caco-2 cells. Mechanistically, LZ-8 blocked the upregulation of myosin light chain kinase (MLCK) and NF-kB activation by TLR2-mediated suppression of cytokine signaling (SOCS)-1 expression. Furthermore, LZ-8 pre-treatment reduced the pathological scores of dextran sulfate sodium (DSS)-induced colitis in mice. These results indicated that LZ-8 protected the barrier function of IECs against inflammation. Thus, LZ-8 may potentially be a novel candidate for treating inflammatory bowel disease (IBD).
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Affiliation(s)
- Yu-Huan Chen
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan.
| | - Jenn-Yeu Shin
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan.
| | - Hsiu-Mei Wei
- Division of Pediatric Infectious Diseases, Children's Hospital, China Medical University, Taichung, Taiwan
| | - Chi-Chien Lin
- Institute of Biomedical Sciences, National Chung Hsin University, Taichung, Taiwan
| | - Linda C H Yu
- Graduate Institute of Physiology, College of Medicine and Hospital, National Taiwan University, Taipei, Taiwan
| | - Wei-Ting Liao
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan.
| | - Dz-Chi Chen
- Yeastern Biotech Co. Ltd, New Taipei City, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan.
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Chyuan IT, Chu CL, Hsu PN. Targeting the Tumor Microenvironment for Improving Therapeutic Effectiveness in Cancer Immunotherapy: Focusing on Immune Checkpoint Inhibitors and Combination Therapies. Cancers (Basel) 2021; 13:cancers13061188. [PMID: 33801815 PMCID: PMC7998672 DOI: 10.3390/cancers13061188] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 03/05/2021] [Accepted: 03/05/2021] [Indexed: 12/15/2022] Open
Abstract
Immune checkpoints play critical roles in the regulation of T-cell effector function, and the effectiveness of their inhibitors in cancer therapy has been established. Immune checkpoint inhibitors (ICIs) constitute a paradigm shift in cancer therapy in general and cancer immunotherapy in particular. Immunotherapy has been indicated to reinvigorate antitumor T-cell activity and dynamically modulate anticancer immune responses. However, despite the promising results in the use of immunotherapy in some cancers, numerous patients do not respond to ICIs without the existence of a clear predictive biomarker. Overall, immunotherapy involves a certain degree of uncertainty and complexity. Research on the exploration of cellular and molecular factors within the tumor microenvironment (TME) aims to identify possible mechanisms of immunotherapy resistance, as well as to develop novel combination strategies involving the specific targeting of the TME for cancer immunotherapy. The combination of this approach with other types of treatment, including immune checkpoint blockade therapy involving multiple agents, most of the responses and effects in cancer therapy could be significantly enhanced, but the appropriate combinations have yet to be established. Moreover, the in-depth exploration of complexity within the TME allows for the exploration of pathways of immune dysfunction. It may also aid in the identification of new therapeutic targets. This paper reviews recent advances in the improvement of therapeutic efficacy on the immune context of the TME and highlights its contribution to cancer immunotherapy.
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Affiliation(s)
- I-Tsu Chyuan
- Department of Internal Medicine, Cathay General Hospital, Taipei 10630, Taiwan;
- Department of Medical Research, Cathay General Hospital, Taipei 10630, Taiwan
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City 24205, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei 100233, Taiwan;
| | - Ping-Ning Hsu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei 100233, Taiwan;
- Department of Internal Medicine, National Taiwan University Hospital, Taipei 100225, Taiwan
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei 100233, Taiwan
- Correspondence: ; Tel.: +886-2-23123456 (ext. 88635); Fax: +886-2-23217921
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Hsu WH, Hua KF, Tuan LH, Tsai YL, Chu LJ, Lee YC, Wong WT, Lee SL, Lai JH, Chu CL, Ho LJ, Chiu HW, Hsu YJ, Chen CH, Ka SM, Chen A. Compound K inhibits priming and mitochondria-associated activating signals of NLRP3 inflammasome in renal tubulointerstitial lesions. Nephrol Dial Transplant 2020; 35:74-85. [PMID: 31065699 DOI: 10.1093/ndt/gfz073] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 03/08/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Renal tubulointerstitial lesions (TILs), a key pathological hallmark for chronic kidney disease to progress to end-stage renal disease, feature renal tubular atrophy, interstitial mononuclear leukocyte infiltration and fibrosis in the kidney. Our study tested the renoprotective and therapeutic effects of compound K (CK), as described in our US patent (US7932057B2), on renal TILs using a mouse unilateral ureteral obstruction (UUO) model. METHODS Renal pathology was performed and renal draining lymph nodes were subjected to flow cytometry analysis. Mechanism-based experiments included the analysis of mitochondrial dysfunction, a model of tubular epithelial cells (TECs) under mechanically induced constant pressure (MICP) and tandem mass tags (TMT)-based proteomics analysis. RESULTS Administration of CK ameliorated renal TILs by reducing urine levels of proinflammatory cytokines, and preventing mononuclear leukocyte infiltration and fibrosis in the kidney. The beneficial effects clearly correlated with its inhibition of: (i) NF-κB-associated priming and the mitochondria-associated activating signals of the NLRP3 inflammasome; (ii) STAT3 signalling, which in part prevents NLRP3 inflammasome activation; and (iii) the TGF-β-dependent Smad2/Smad3 fibrotic pathway, in renal tissues, renal TECs under MICP and/or activated macrophages, the latter as a major inflammatory player contributing to renal TILs. Meanwhile, TMT-based proteomics analysis revealed downregulated renal NLRP3 inflammasome activation-associated signalling pathways in CK-treated UUO mice. CONCLUSIONS The present study, for the first time, presents the potent renoprotective and therapeutic effects of CK on renal TILs by targeting the NLRP3 inflammasome and STAT3 signalling.
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Affiliation(s)
- Wan-Han Hsu
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Kuo-Feng Hua
- Department of Biotechnology and Animal Science, National Ilan University, Ilan, Taiwan
| | - Li-Heng Tuan
- Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Yu-Ling Tsai
- Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Lichieh Julie Chu
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Yu-Chieh Lee
- Department of Biotechnology and Animal Science, National Ilan University, Ilan, Taiwan
| | - Wei-Ting Wong
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Sheau-Long Lee
- Department of Chemistry, R.O.C. Military Academy, Kaohsiung, Taiwan
| | - Jenn-Haung Lai
- Department of Internal Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ling-Jun Ho
- Institute of Cellular and System Medicine, National Health Research Institute, Miaoli, Taiwan
| | - Hsiao-Wen Chiu
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Yu-Juei Hsu
- Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Cheng-Hsu Chen
- Division of Nephrology, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan.,Department of Life Science, Tunghai University, Taichung, Taiwan.,School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan
| | - Shuk-Man Ka
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan.,Graduate Institute of Aerospace and Undersea Medicine, Department of Medicine, National Defense Medical Center, Taipei, Taiwan
| | - Ann Chen
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan.,Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
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10
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Chu CL, Lee YP, Pang CY, Lin HR, Chen CS, You RI. Tyrosine kinase inhibitors modulate dendritic cell activity via confining c-Kit signaling and tryptophan metabolism. Int Immunopharmacol 2020; 82:106357. [PMID: 32151959 DOI: 10.1016/j.intimp.2020.106357] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 02/25/2020] [Accepted: 02/25/2020] [Indexed: 12/11/2022]
Abstract
Dendritic cell (DC)-based vaccine has been established in tumor immunotherapy. Importantly, the efficiency of anti-tumor T-cells in draining lymph nodes is dependent on the status of DCs surrounding in tumors. It has been shown that Indoleamine 2,3-dioxygenase (IDO) plays a key role to induce tolerogenic DCs in tumor microenvironment, and tyrosine kinase inhibitors (TKIs) can suppress the function of IDO in DCs. However, the stimulatory effect of TKI-modified DCs on T cells remains unclear. In this report, we found that one type of TKI-dasatinib can modify DCs to increasing the activation of allogenic T cells. These TKI-modified DCs delayed the onset of B16 melanoma progression in mice. In mechanistic studies, TKIs did not increase the maturation but reduce the expression and phosphorylation levels of IDO and IDO mediated tryptophan metabolism in DCs. In addition, the suppressive effect of TKIs on tryptophan metabolism may be caused by blocking c-Kit pathway in DCs. Furthermore, the increased phosphorylation of general control nonderepressible (GCN2) and decreased expression of aryl hydrocarbon receptor (AhR)/aryl hydrocarbon receptor nuclear translocator (ARNT) were observed in the T cells activated by TKI-modified DCs, suggesting the enhancement of effector function of T cells. These results indicate that TKI could be used to modulate DC immunogenic activity and may potentially be applied in DC-based cancer immunotherapy.
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Affiliation(s)
- Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yi-Pang Lee
- Department of Health Administration, Tzu Chi University of Science and Technology, Hualien, Taiwan; Division of Oral Pathology, Department of Dentistry, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
| | - Cheng-Yoong Pang
- Institute of Medical Sciences, Tzu Chi University, Hualien, Taiwan; Department of Medical Research, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
| | - Huei-Ru Lin
- Department of Laboratory Medicine and Biotechnology, College of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Chang-Shan Chen
- Institutes of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Ren-In You
- Department of Laboratory Medicine and Biotechnology, College of Medicine, Tzu Chi University, Hualien, Taiwan.
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11
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Wu CY, Hua KF, Chu CL, Yang SR, Arbiser JL, Yang SS, Lin YC, Liu FC, Yang SM, Ka SM, Chen A. Tris DBA Ameliorates Accelerated and Severe Lupus Nephritis in Mice by Activating Regulatory T Cells and Autophagy and Inhibiting the NLRP3 Inflammasome. J Immunol 2020; 204:1448-1461. [PMID: 32060137 DOI: 10.4049/jimmunol.1801610] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 01/10/2020] [Indexed: 12/20/2022]
Abstract
Tris (dibenzylideneacetone) dipalladium (Tris DBA), a small-molecule palladium complex, has been shown to inhibit cell growth and proliferation in pancreatic cancer, lymphocytic leukemia, and multiple myeloma. In the current study, we examined the therapeutic effects of Tris DBA on glomerular cell proliferation, renal inflammation, and immune cells. Treatment of accelerated and severe lupus nephritis (ASLN) mice with Tris DBA resulted in improved renal function, albuminuria, and pathology, including measurements of glomerular cell proliferation, cellular crescents, neutrophils, fibrinoid necrosis, and tubulointerstitial inflammation in the kidneys as well as scoring for glomerulonephritis activity. The treated ASLN mice also showed significantly decreased glomerular IgG, IgM, and C3 deposits. Furthermore, the compound was able to 1) inhibit bone marrow-derived dendritic cell-mediated T cell functions and reduce serum anti-dsDNA autoantibody levels; 2) differentially regulate autophagy and both the priming and activation signals of the NLRP3 inflammasome; and 3) suppress the phosphorylation of JNK, ERK, and p38 MAPK signaling pathways. Tris DBA improved ASLN in mice through immunoregulation by blunting the MAPK (ERK, JNK)-mediated priming signal of the NLRP3 inflammasome and by regulating the autophagy/NLRP3 inflammasome axis. These results suggest that the pure compound may be a drug candidate for treating the accelerated and deteriorated type of lupus nephritis.
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Affiliation(s)
- Chung-Yao Wu
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan 114
| | - Kuo-Feng Hua
- Department of Biotechnology and Animal Science, National Ilan University, Yilan, Taiwan 260
| | - Ching-Liang Chu
- Graduate Institute of Immunology, National Taiwan University College of Medicine, Taipei, Taiwan 106;
| | - Shin-Ruen Yang
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan 114
| | - Jack L Arbiser
- Department of Dermatology, Emory School of Medicine, Atlanta, GA 30322.,Winship Cancer Institute, Emory School of Medicine, Atlanta, GA 30322.,Atlanta Veterans Administration Medical Center, Decatur, GA 30033
| | - Sung-Sen Yang
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan 114;
| | - Yu-Chuan Lin
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan 114
| | - Feng-Cheng Liu
- Division of Rheumatology/Immunology and Allergy, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan 114
| | - Shun-Min Yang
- Institute of Physics, Academia Sinica, Taipei, Taiwan 114
| | - Shuk-Man Ka
- Graduate Institute of Aerospace and Undersea Medicine, Academy of Medicine, National Defense Medical Center, Taipei, Taiwan 114; and
| | - Ann Chen
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan 114; .,Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan 114
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12
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You RI, Lee YP, Su TY, Lin CC, Chen CS, Chu CL. A Benzenoid 4,7-Dimethoxy-5-Methyl-L, 3-Benzodioxole from Antrodia cinnamomea Attenuates Dendritic Cell-Mediated Th2 Allergic Responses. Am J Chin Med 2019; 47:1271-1287. [PMID: 31488035 DOI: 10.1142/s0192415x19500654] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Dendritic cells (DCs) play a critical role in initiating immune responses; however, DCs also induce Th2-related allergic sensitivities. Thus, DCs become a target for therapeutic design in allergic diseases. In this study, we aim to investigate the anti-allergic effect of pure compounds from a medicinal mushroom Antrodia cinnamomea (Ac) on DC-induced allergic responses. We identified a benzenoid compound 4,7-dimethoxy-5-methyl-l,3-benzodioxole (DMB) which may modulate Th2 polarization in bone marrow-derived DCs (BMDCs) and in a murine food allergy model. DMB effectively reduced the Th2 adjuvant cholera toxin (CT)-induced BMDC maturation and cytokine production. In studying the mechanism, DMB blocked the molecular processes involved in Th2 induction, including cAMP activation, IL-33 production, and IRF4/Tim4 upregulation, in CT-activated BMDCs. Furthermore, DMB treatment attenuated the symptoms, clinical scores, and Th2 responses of CT-induced ovalbumin (OVA)-specific food allergy in mice at sensitization stage. These results indicated that DMB could suppress DC function for Th2 polarization and mitigate allergic responses. Thus, DMB may have potential to be a novel agent for preventing or treating food allergy.
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Affiliation(s)
- Ren-In You
- Department of Laboratory Medicine and Biotechnology, Tzu Chi University, Hualien, Taiwan
| | - Yi-Pang Lee
- Department of Health Administration, Tzu Chi University of Science and Technology, Hualien, Taiwan.,Division of Oral Pathology, Department of Dentistry, Tzu Chi General Hospital, Hualien, Taiwan
| | - Ting-Yi Su
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chi-Chien Lin
- Institute of Biomedical Sciences, National Chung Hsin University, Taichung, Taiwan
| | - Chang-Shan Chen
- Department of Laboratory Medicine and Biotechnology, Tzu Chi University, Hualien, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
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13
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Lin TJ, Wu CY, Tsai PY, Hsu WH, Hua KF, Chu CL, Lee YC, Chen A, Lee SL, Lin YJ, Hsieh CY, Yang SR, Liu FC, Ka SM. Accelerated and Severe Lupus Nephritis Benefits From M1, an Active Metabolite of Ginsenoside, by Regulating NLRP3 Inflammasome and T Cell Functions in Mice. Front Immunol 2019; 10:1951. [PMID: 31475012 PMCID: PMC6702666 DOI: 10.3389/fimmu.2019.01951] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 08/01/2019] [Indexed: 12/11/2022] Open
Abstract
Chinese herbal medicines used in combination have long-term been shown to be mild remedies with “integrated effects.” However, our study provides the first demonstration that M1, an active metabolite of ginsenoside, exerted its dramatic therapeutic effects on accelerated and severe lupus nephritis (ASLN) mice, featuring acute renal function impairment, heavy proteinuria, high serum levels of anti-dsDNA, and high-grade, diffuse proliferative renal lesions. In the present study, NZB/WF1 mice were given injections of lipopolysaccharide to induce the ASLN model. M1 (30 mg/kg) was then administered to the mice by gavage daily, and the mice were sacrificed on week 3 and week 5 after the induction of disease. To identify the potential mechanism of action for the pure compound, levels of NLRP3 inflammasome activation in bone marrow-derived dendritic cells (BMDCs), podocytes and macrophages, and antigen-specific T cell activation in BMDCs were determined in addition to mechanistic experiments in vivo. Treatment with M1 dramatically improved renal function, albuminuria and renal lesions and reduced serum levels of anti-dsDNA in the ASLN mice. These beneficial effects with M1 treatment involved the following cellular and molecular mechanistic events: [1] inhibition of NLRP3 inflammasome associated with autophagy induction, [2] modulation of T help cell activation, and [3] induction of regulatory T cell differentiation. M1 improved the ASLN mice by blunting NLRP3 inflammasome activation and differentially regulating T cell functions, and the results support M1 as a new therapeutic candidate for LN patients with a status of abrupt transformation of lower-grade (mesangial) to higher-grade (diffuse proliferative) nephritis.
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Affiliation(s)
- Tsai-Jung Lin
- Department of Pathology, National Defense Medical Center, Tri-Service General Hospital, Taipei, Taiwan
| | - Chung-Yao Wu
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Pei-Yi Tsai
- Department of Pathology, National Defense Medical Center, Tri-Service General Hospital, Taipei, Taiwan
| | - Wan-Han Hsu
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Kuo-Feng Hua
- Department of Biotechnology and Animal Science, National Ilan University, Ilan, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yu-Chieh Lee
- Department of Biotechnology and Animal Science, National Ilan University, Ilan, Taiwan
| | - Ann Chen
- Department of Pathology, National Defense Medical Center, Tri-Service General Hospital, Taipei, Taiwan
| | - Sheau-Long Lee
- Department of Chemistry, R.O.C. Military Academy, Kaohsiung, Taiwan
| | - Yi-Jin Lin
- Department of Pathology, National Defense Medical Center, Tri-Service General Hospital, Taipei, Taiwan
| | - Chih-Yu Hsieh
- Department of Internal Medicine, En Chu Kong Hospital, New Taipei City, Taiwan.,Renal Care Joint Foundation, New Taipei City, Taiwan
| | - Shin-Ruen Yang
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Feng-Cheng Liu
- Division of Rheumatology/Immunology and Allergy, Department of Internal Medicine, National Defense Medical Center, Tri-Service General Hospital, Taipei, Taiwan
| | - Shuk-Man Ka
- Graduate Institute of Aerospace and Undersea Medicine, Department of Medicine, National Defense Medical Center, Taipei, Taiwan
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14
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Li WS, Chu CL, Chen MH, Lu YS, Lai JS, You BJ, Lin CC. Lepista sordida Water Extract Enhances the Maturation of Mouse Dendritic Cells in Vitro and in Vivo. Iran J Immunol 2018; 15:256-268. [PMID: 30593740 DOI: 10.22034/iji.2018.39395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Lepista sordida (LS) extract has been shown to possess anti-oxidant, anti-aging, and anti-tumor activities. However, the immunostimulatory effect of LS extract has not been elucidated. OBJECTIVE To characterize the impact of a water extract of LS (WE-LS) on the maturation and function of mouse dendritic cell (DC) in vitro and in vivo. METHODS Mouse bone marrow-derived DCs (BMDCs) were generated. Next, DC maturation was determined by flow cytometry, and cytokine production was measured by ELISA after WE-LS treatment. In addition, DC-induced OVA-specific T cell activation was assayed by [3H]-thymidine incorporation assay. Furthermore, the in vivo effects of WE-LS on DC maturation and Th1 responses in the spleens of mice were assessed by flow cytometry. RESULTS WE-LS treatment up-regulated co-stimulatory (CD40 and CD80) and MHC class II molecules, increased the production of tumor necrosis factor-alpha (TNF-α), IL-6 and IL-12, and enhanced both the proliferation and IFN-γ secretion of allogenic T cells in BMDCs, partially mediated by the TLR2 and TLR4 signaling pathways. Moreover, the in vivo administration of WE-LS to mice enhanced the up-regulation of CD40, CD80 and MHC class II molecules in spleen DCs. WE-LS also increased the generation of T helper type 1 (Th1) cells in vivo. CONCLUSION These results suggest that WE-LS might have the potential to promote immunity against infection and cancer or to serve as an adjuvant in vaccines and immunotherapies.
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Affiliation(s)
- Wei-Sung Li
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, College of Chinese Medicine, China Medical University, Taichung, Taiwan
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15
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Lin CC, Wu JJ, Pan YG, Chao YH, Lin FC, Lee YR, Chu CL. Gold lotion from citrus peel extract ameliorates imiquimod-induced psoriasis-like dermatitis in murine. J Sci Food Agric 2018; 98:5509-5517. [PMID: 29691866 DOI: 10.1002/jsfa.9097] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 04/16/2018] [Accepted: 04/18/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Gold lotion (GL), a natural mixed product made from the peels of six citrus fruits, has recently been identified as possessing anti-oxidative, anti-inflammatory, and immunomodulatory effects. GL has been used to protect skin against UV-induced damage, but its activity against psoriasis, a chronic autoimmune skin disease caused by dysregulation between immune cells and keratinocytes, is not known. We therefore evaluated the effect of GL on imiquimod (IMQ)-induced psoriasis-like inflammation in mice. RESULTS GL treatment significantly attenuated IMQ-induced psoriasis-like symptoms in mice. The inflammatory cytokines upregulated by IMQ in skin lesions were also inhibited by feeding GL. In addition, GL treatment reduced the infiltration of CD4+ T cells/neutrophils in skin lesions and the percentage of IL-17-/IL-22-producing T cells in lymph nodes. Furthermore, GL impaired IMQ-induced type I interferon production by plasmacytoid dendritic cells (pDCs) in vitro. CONCLUSION Our results indicate GL can act to suppress the initiation of psoriasis and strongly suggest that GL may have potential to be applied to the treatment of psoriasis. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Chi-Chien Lin
- Institute of Biomedical Sciences, National Chung-Hsing University, Taichung, Taiwan
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Jung-Ju Wu
- Department of Chinese Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Yi-Gen Pan
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ya-Hsuan Chao
- Institute of Biomedical Sciences, National Chung-Hsing University, Taichung, Taiwan
| | - Fang-Chu Lin
- Department of Chinese Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Ying-Ray Lee
- Translational Medicine Research Center, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
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16
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Chung IC, Yuan SN, OuYang CN, Lin HC, Huang KY, Chen YJ, Chung AK, Chu CL, Ojcius DM, Chang YS, Chen LC. Src-family kinase-Cbl axis negatively regulates NLRP3 inflammasome activation. Cell Death Dis 2018; 9:1109. [PMID: 30382081 PMCID: PMC6208430 DOI: 10.1038/s41419-018-1163-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 10/18/2018] [Indexed: 12/13/2022]
Abstract
Activation of the NLRP3 inflammasome is crucial for immune defense, but improper and excessive activation causes inflammatory diseases. We previously reported that Pyk2 is essential for NLRP3 inflammasome activation. Here we show that the Src-family kinases (SFKs)-Cbl axis plays a pivotal role in suppressing NLRP3 inflammasome activation in response to stimulation by nigericin or ATP, as assessed using gene knockout and gene knockdown cells, dominant active/negative mutants, and pharmacological inhibition. We reveal that the phosphorylation of Cbl is regulated by SFKs, and that phosphorylation of Cbl at Tyr371 suppresses NLRP3 inflammasome activation. Mechanistically, Cbl decreases the level of phosphorylated Pyk2 (p-Pyk2) through ubiquitination-mediated proteasomal degradation and reduces mitochondrial ROS (mtROS) production by contributing to the maintenance of mitochondrial size. The lower levels of p-Pyk2 and mtROS dampen NLRP3 inflammasome activation. In vivo, inhibition of Cbl with an analgesic drug, hydrocotarnine, increases inflammasome-mediated IL-18 secretion in the colon, and protects mice from dextran sulphate sodium-induced colitis. Together, our novel findings provide new insights into the role of the SFK-Cbl axis in suppressing NLRP3 inflammasome activation and identify a novel clinical utility of hydrocortanine for disease treatment.
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Affiliation(s)
- I-Che Chung
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, 333, Taiwan
| | - Sheng-Ning Yuan
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, 333, Taiwan
| | - Chun-Nan OuYang
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, 333, Taiwan
| | - Hsin-Chung Lin
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, 114, Taiwan.,Division of Clinical Pathology, Department of Pathology, Tri-Service General Hospital, Taipei, 114, Taiwan
| | - Kuo-Yang Huang
- Graduate Institute of Pathology and Parasitology, National Defense Medical Center, Taipei, 114, Taiwan
| | - Yu-Jen Chen
- Department of Medical Research, Mackay Memorial Hospital, New Taipei City, 251, Taiwan.,Department of Radiation Oncology, Mackay Memorial Hospital, New Taipei City, 251, Taiwan
| | - An-Ko Chung
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, 100, Taiwan
| | - David M Ojcius
- Department of Biomedical Sciences, University of the Pacific Arthur A. Dugoni School of Dentistry, San Francisco, CA, 94103, USA.,Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, 333, Taiwan.,Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Linkou, 333, Taiwan
| | - Yu-Sun Chang
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, 333, Taiwan.,Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan.,Department of Otolaryngology-Head & Neck Surgery, Chang Gung Memorial Hospital, Linkou, 333, Taiwan
| | - Lih-Chyang Chen
- Department of Medicine, Mackay Medical College, New Taipei City, 252, Taiwan.
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17
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Pan YG, Yu YL, Lin CC, Lanier LL, Chu CL. FcεRI γ-Chain Negatively Modulates Dectin-1 Responses in Dendritic Cells. Front Immunol 2017; 8:1424. [PMID: 29163499 PMCID: PMC5663849 DOI: 10.3389/fimmu.2017.01424] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 10/13/2017] [Indexed: 12/15/2022] Open
Abstract
The inhibitory effect of immunoreceptor tyrosine-based activation motif (ITAM)-containing adapters DAP12 and FcεRI γ-chain (FcRγ) has been found in many immune functions. Herein, we have further explored the role of these adapters in C-type lectin receptors response. We identified that FcRγ, but not DAP12, could negatively regulate the Dectin-1 responses in dendritic cells (DCs). Loss of FcRγ or both DAP12 and FcRγ enhanced the maturation and cytokine production in DCs upon Dectin-1 activation compared to normal cells, whereas DCs lacking only DAP12 showed little changes. In addition, increments of T cell activation and T helper 17 polarization induced by FcRγ-deficient DCs were observed both in vitro and in vivo. Examining the Dectin-1 signaling, we revealed that the activations of several signaling molecules were augmented in FcRγ-deficient DCs stimulated with Dectin-1 ligands. Furthermore, we demonstrated that the association of phosphatases SHP-1 and PTEN with FcRγ may contribute to the negative regulation of FcRγ in Dectin-1 activation in DCs. These results extend the inhibitory effect of ITAM-containing adapters to Dectin-1 response in immune functions, even though Dectin-1 contains an ITAM-like intracellular domain. According to the role of Dectin-1 in responding to microbes and tumor cells, our finding may have applications in the development of vaccine and cancer therapy.
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Affiliation(s)
- Yi-Gen Pan
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yen-Ling Yu
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli County, Taiwan
| | - Chi-Chien Lin
- Institute of Biomedical Sciences, National Chung Hsin University, Taichung, Taiwan
| | - Lewis L Lanier
- Department of Microbiology and Immunology, University of California San Francisco, San Francisco, CA, United States.,The Parker Institute for Cancer Immunotherapy, University of California San Francisco, San Francisco, CA, United States
| | - Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
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18
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You RI, Chu CL. SHP-1 (PTPN6) keeps the inflammation at bay: limiting IL-1α-mediated neutrophilic dermatoses by preventing Syk kinase activation. Cell Mol Immunol 2017; 14:cmi201759. [PMID: 28690326 PMCID: PMC5675957 DOI: 10.1038/cmi.2017.59] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 06/06/2017] [Indexed: 12/12/2022] Open
Affiliation(s)
- Ren-In You
- Department of Laboratory Medicine and Biotechnology, Tzu Chi University, Hualian, Taiwan, China
| | - Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan, China
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19
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Chang HC, Huang DY, Wu MS, Chu CL, Tzeng SJ, Lin WW. Spleen tyrosine kinase mediates the actions of EPO and GM-CSF and coordinates with TGF-β in erythropoiesis. Biochimica et Biophysica Acta (BBA) - Molecular Cell Research 2017; 1864:687-696. [DOI: 10.1016/j.bbamcr.2017.01.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 01/20/2017] [Accepted: 01/23/2017] [Indexed: 12/12/2022]
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20
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Chi HH, Hua KF, Lin YC, Chu CL, Hsieh CY, Hsu YJ, Ka SM, Tsai YL, Liu FC, Chen A. IL-36 Signaling Facilitates Activation of the NLRP3 Inflammasome and IL-23/IL-17 Axis in Renal Inflammation and Fibrosis. J Am Soc Nephrol 2017; 28:2022-2037. [PMID: 28179433 DOI: 10.1681/asn.2016080840] [Citation(s) in RCA: 108] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 01/04/2017] [Indexed: 12/19/2022] Open
Abstract
IL-36 cytokines are proinflammatory and have an important role in innate and adaptive immunity, but the role of IL-36 signaling in renal tubulointerstitial lesions (TILs), a major prognostic feature of renal inflammation and fibrosis, remains undetermined. In this study, increased IL-36α expression detected in renal biopsy specimens and urine samples from patients with renal TILs correlated with renal function impairment. We confirmed the increased expression of IL-36α in the renal tubular epithelial cells of a mouse model of unilateral ureteral obstruction (UUO) and related cell models using mechanically induced pressure, oxidative stress, or high mobility group box 1. In contrast, the kidneys of IL-36 receptor (IL-36R) knockout mice exhibit attenuated TILs after UUO. Compared with UUO-treated wild-type mice, UUO-treated IL-36 knockout mice exhibited markedly reduced NLRP3 inflammasome activation and macrophage/T cell infiltration in the kidney and T cell activation in the renal draining lymph nodes. In vitro, recombinant IL-36α facilitated NLRP3 inflammasome activation in renal tubular epithelial cells, macrophages, and dendritic cells and enhanced dendritic cell-induced T cell proliferation and Th17 differentiation. Furthermore, deficiency of IL-23, which was diminished in IL-36R knockout UUO mice, also reduced renal TIL formation in UUO mice. In wild-type mice, administration of an IL-36R antagonist after UUO reproduced the results obtained in UUO-treated IL-36R knockout mice. We propose that IL-36 signaling contributes to the pathogenesis of renal TILs through the activation of the NLRP3 inflammasome and IL-23/IL-17 axis.
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Affiliation(s)
| | - Kuo-Feng Hua
- Department of Biotechnology and Animal Science, National Ilan University, Ilan, Taiwan; and
| | | | - Ching-Liang Chu
- Graduate Institute of Immunology, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chih-Yu Hsieh
- Department of Biotechnology and Animal Science, National Ilan University, Ilan, Taiwan; and
| | - Yu-Juei Hsu
- Division of Nephrology, Department of Medicine
| | - Shuk-Man Ka
- Graduate Institutes of Life Sciences and .,Aerospace and Undersea Medicine, National Defense Medical Center, Taipei, Taiwan
| | | | - Feng-Cheng Liu
- Division of Rheumatology/Immunology and Allergy, Department of Medicine, and
| | - Ann Chen
- Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan;
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21
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Chung IC, OuYang CN, Yuan SN, Li HP, Chen JT, Shieh HR, Chen YJ, Ojcius DM, Chu CL, Yu JS, Chang YS, Chen LC. Pyk2 activates the NLRP3 inflammasome by directly phosphorylating ASC and contributes to inflammasome-dependent peritonitis. Sci Rep 2016; 6:36214. [PMID: 27796369 PMCID: PMC5087076 DOI: 10.1038/srep36214] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 10/12/2016] [Indexed: 01/18/2023] Open
Abstract
The inflammasome adaptor protein, ASC, contributes to both innate immune responses and inflammatory diseases via self-oligomerization, which leads to the activation of the protease, caspase-1. Here, we report that the cytosolic tyrosine kinases, FAK and Pyk2, are differentially involved in NLRP3 and AIM2 inflammasome activation. The inhibition of FAK and Pyk2 with RNA interference or chemical inhibitors dramatically abolished ASC oligomerization, caspase-1 activation, and IL-1β secretion in response to NLRP3 or AIM2 stimulation. Pyk2 is phosphorylated by the kinase Syk and relocalizes to the ASC specks upon NLRP3 inflammasome activation. Pyk2, but not FAK, could directly phosphorylate ASC at Tyr146, and only the phosphorylated ASC could participate in speck formation and trigger IL-1β secretion. Moreover, the clinical-trial-tested Pyk2/FAK dual inhibitor PF-562271 reduced monosodium urate-mediated peritonitis, a disease model used for studying the consequences of NLRP3 activation. Our results suggest that although Pyk2 and FAK are involved in inflammasome activation, only Pyk2 directly phosphorylates ASC and brings ASC into an oligomerization-competent state by allowing Tyr146 phosphorylation to participate ASC speck formation and subsequent NLRP3 inflammation.
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Affiliation(s)
- I-Che Chung
- Molecular Medicine Research Center, Chang Gung University, 333 Taoyuan, Taiwan
| | - Chun-Nan OuYang
- Molecular Medicine Research Center, Chang Gung University, 333 Taoyuan, Taiwan
| | - Sheng-Ning Yuan
- Molecular Medicine Research Center, Chang Gung University, 333 Taoyuan, Taiwan
| | - Hsin-Pai Li
- Department of Microbiology and Immunology, Chang Gung University, 333 Taoyuan, Taiwan.,Graduate Institute of Biomedical Sciences, Chang Gung University, 333 Taoyuan, Taiwan.,Division of Hematology-Oncology, Chang Gung Memorial Hospital at Lin-Kuo, 333 Taoyuan, Taiwan
| | - Jeng-Ting Chen
- Molecular Medicine Research Center, Chang Gung University, 333 Taoyuan, Taiwan
| | - Hui-Ru Shieh
- Department of Medical Research Mackay Memorial Hospital, 251 New Taipei City, Taiwan
| | - Yu-Jen Chen
- Department of Medical Research Mackay Memorial Hospital, 251 New Taipei City, Taiwan.,Department of Radiation Oncology, Mackay Memorial Hospital, 251 New Taipei City, Taiwan
| | - David M Ojcius
- Department of Biomedical Sciences, University of the Pacific Arthur A. Dugoni School of Dentistry, San Francisco, CA 94103, USA
| | - Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, 100 Taipei, Taiwan
| | - Jau-Song Yu
- Graduate Institute of Biomedical Sciences, Chang Gung University, 333 Taoyuan, Taiwan.,Proteomics Core Laboratory, Chang Gung University, 333 Taoyuan, Taiwan.,Liver Research Center, Chang Gung Memorial Hospital at Lin-Kou, 333 Taoyuan, Taiwan
| | - Yu-Sun Chang
- Molecular Medicine Research Center, Chang Gung University, 333 Taoyuan, Taiwan.,Graduate Institute of Biomedical Sciences, Chang Gung University, 333 Taoyuan, Taiwan.,Department of Otolaryngology, Chang Gung Memorial Hospital at Lin-Kuo, 333 Taoyuan, Taiwan
| | - Lih-Chyang Chen
- Department of Medicine, Mackay Medical College, 252 New Taipei City, Taiwan
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22
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Lin CC, Pan IH, Li YR, Pan YG, Lin MK, Lu YH, Wu HC, Chu CL. The adjuvant effects of high-molecule-weight polysaccharides purified from Antrodia cinnamomea on dendritic cell function and DNA vaccines. PLoS One 2015; 10:e0116191. [PMID: 25723174 PMCID: PMC4344241 DOI: 10.1371/journal.pone.0116191] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 12/08/2014] [Indexed: 01/19/2023] Open
Abstract
The biological activity of the edible basidiomycete Antrodia cinnamomea (AC) has been studied extensively. Many effects, such as anti-cancer, anti-inflammatory, and antioxidant activities, have been reported from either crude extracts or compounds isolated from AC. However, research addressing the function of AC in enhancing immunity is rare. The aim of the present study is to investigate the active components and the mechanism involved in the immunostimulatory effect of AC. We found that polysaccharides (PS) in the water extract of AC played a major role in dendritic cell (DC) activation, which is a critical leukocyte in initiating immune responses. We further size purified and identified that the high-molecular weight PS fraction (greater than 100 kDa) exhibited the activating effect. The AC high-molecular weight PSs (AC hmwPSs) promoted pro-inflammatory cytokine production by DCs and the maturation of DCs. In addition, DC-induced antigen-specific T cell activation and Th1 differentiation were increased by AC hmwPSs. In studying the molecular mechanism, we confirmed the activation of the MAPK and NF-κB pathways in DCs after AC hmwPSs treatment. Furthermore, we demonstrated that TLR2 and TLR4 are required for the stimulatory activity of AC hmwPSs on DCs. In a mouse tumor model, we demonstrated that AC hmwPSs enhanced the anti-tumor efficacy of the HER-2/neu DNA vaccine by facilitating specific Th1 responses. Thus, we conclude that hmwPSs are the major components of AC that stimulate DCs via the TLR2/TLR4 and NF-κB/MAPK signaling pathways. The AC hmwPSs have potential to be applied as adjuvants.
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Affiliation(s)
- Chi-Chen Lin
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan
- Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, Taiwan
- Department of Medical Research and Education, Taichung Veterans General Hospital, Taichung, Taiwan
| | - I-Hong Pan
- Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan
| | - Yi-Rong Li
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Yi-Gen Pan
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ming-Kuem Lin
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, China Medical University, Taichung, Taiwan
| | - Yi-Huang Lu
- Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan
| | - Hsin-Chieh Wu
- Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
- * E-mail:
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23
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Li X, Chu CL, Liu L, Liu XK, Bai J, Guo C, Xue F, Lin PH, Chu PK. Biodegradable poly-lactic acid based-composite reinforced unidirectionally with high-strength magnesium alloy wires. Biomaterials 2015; 49:135-44. [PMID: 25725562 DOI: 10.1016/j.biomaterials.2015.01.060] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 12/22/2014] [Accepted: 01/20/2015] [Indexed: 02/02/2023]
Abstract
Biodegradable poly-lactic acid (PLA)--based composites reinforced unidirectionally with high-strength magnesium alloy wires (MAWs) are fabricated by a heat-compressing process and the mechanical properties and degradation behavior are studied experimentally and theoretically. The composites possess improved strengthening and toughening properties. The bending strength and impact strength of the composites with 40 vol% MAWs are 190 MPa and 150 kJ/m(2), respectively, although PLA has a low viscosity and an average molecular weight of 60,000 g/mol. The mechanical properties of the composites can be further improved by internal structure modification and interface strengthening and a numerical model incorporating the equivalent section method (ESM) is proposed for the bending strength. Micro arc oxidization (MAO) of the MAWs is an effective interfacial strengthening method. The composites exhibit high strength retention during degradation and the PLA in the composite shows a smaller degradation rate than pure PLA. The novel biodegradable composites have large potential in bone fracture fixation under load-bearing conditions.
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Affiliation(s)
- X Li
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, China
| | - C L Chu
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, China.
| | - L Liu
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, China
| | - X K Liu
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, China
| | - J Bai
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, China.
| | - C Guo
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, China
| | - F Xue
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, China
| | - P H Lin
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, China
| | - Paul K Chu
- Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
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24
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Chang YL, Chen TH, Wu YH, Chen GA, Weng TH, Tseng PH, Hsieh SL, Fu SL, Lin CH, Chen CJ, Chu CL, Chio IIC, Mak TW, Chen NJ. A novel TLR2-triggered signalling crosstalk synergistically intensifies TNF-mediated IL-6 induction. J Cell Mol Med 2014; 18:1344-57. [PMID: 24758719 PMCID: PMC4124019 DOI: 10.1111/jcmm.12294] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Accepted: 03/10/2014] [Indexed: 12/18/2022] Open
Abstract
Toll-like receptors (TLR) recognize pathogens and trigger the production of vigorous pro-inflammatory cytokines [such as tumour necrosis factor (TNF)] that induce systemic damages associated with sepsis and chronic inflammation. Cooperation between signals of TLR and TNF receptor has been demonstrated through the participation of TNF receptor 1 (TNFR) adaptors in endotoxin tolerance. Here, we identify a TLR2-mediated synergy, through a MyD88-independent crosstalk, which enhances subsequent TNF-mediated nuclear factor-kappa B activation and interleukin-6 induction. Membrane-associated adaptor MAL conduces the link between TNF receptor-associated factor 6 (TRAF6) and TNFR-associated death domain, leading to a distinctive K63-ubiquitinylated TRAF6 recruitment into TNFR complex. In summary, our results reveal a novel route of TLR signal that synergistically amplifies TNF-mediated responses, indicating an innovative target for inflammation manipulation.
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Affiliation(s)
- Yu-Ling Chang
- Institute of Microbiology and Immunology, School of Life Sciences, National Yang-Ming UniversityTaipei, Taiwan
| | - Tzu-Hui Chen
- Institute of Microbiology and Immunology, School of Life Sciences, National Yang-Ming UniversityTaipei, Taiwan
| | - Yi-Hsiu Wu
- Institute of Microbiology and Immunology, School of Life Sciences, National Yang-Ming UniversityTaipei, Taiwan
| | - Guann-An Chen
- Institute of Microbiology and Immunology, School of Life Sciences, National Yang-Ming UniversityTaipei, Taiwan
| | - Tzu-Huei Weng
- Institute of Microbiology and Immunology, School of Life Sciences, National Yang-Ming UniversityTaipei, Taiwan
| | - Ping-Hui Tseng
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, National Yang-Ming UniversityTaipei, Taiwan
- Inflammation and Immunity Research Center, National Yang-Ming UniversityTaipei, Taiwan
| | - Shie-Liang Hsieh
- Institute of Microbiology and Immunology, School of Life Sciences, National Yang-Ming UniversityTaipei, Taiwan
- Inflammation and Immunity Research Center, National Yang-Ming UniversityTaipei, Taiwan
- Institute of Clinical Medicine, School of Medicine, National Yang-Ming UniversityTaipei, Taiwan
- Genomics Research Center, Academia SinicaTaipei, Taiwan
- Institute for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University and Immunology Center, Taipei Veterans General HospitalTaipei, Taiwan
| | - Shu-Ling Fu
- Institute of Traditional Medicine, School of Medicine, National Yang-Ming UniversityTaipei, Taiwan
| | - Chi-Hung Lin
- Institute of Microbiology and Immunology, School of Life Sciences, National Yang-Ming UniversityTaipei, Taiwan
| | - Chun-Jen Chen
- Department of Biochemical Science and Technology, College of Life Science, National Taiwan UniversityTaipei, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan UniversityTaipei, Taiwan
| | - Iok In Christine Chio
- The Campbell Family Institute for Breast Cancer Research, Ontario Cancer Institute, University Health Network and Department of Medical Biophysics, University of TorontoToronto, ON, Canada
| | - Tak Wah Mak
- The Campbell Family Institute for Breast Cancer Research, Ontario Cancer Institute, University Health Network and Department of Medical Biophysics, University of TorontoToronto, ON, Canada
| | - Nien-Jung Chen
- Institute of Microbiology and Immunology, School of Life Sciences, National Yang-Ming UniversityTaipei, Taiwan
- Inflammation and Immunity Research Center, National Yang-Ming UniversityTaipei, Taiwan
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25
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Li S, Lin YC, Ho CT, Lin PY, Suzawa M, Wang HC, Chu CL, Chen DY, Lin CC. Formulated extract from multiple citrus peels impairs dendritic cell functions and attenuates allergic contact hypersensitivity. Int Immunopharmacol 2014; 20:12-23. [DOI: 10.1016/j.intimp.2014.02.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 02/05/2014] [Accepted: 02/07/2014] [Indexed: 12/21/2022]
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26
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Lin CC, Chu CL, Ng CS, Lin CY, Chen DY, Pan IH, Huang KJ. Immunomodulation of phloretin by impairing dendritic cell activation and function. Food Funct 2014; 5:997-1006. [DOI: 10.1039/c3fo60548e] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Chien CT, Liu CY, Wu ZW, Chen PJ, Chu CL, Lin SY. Co-caged gold nanoclusters and methyl motifs lead to detoxification of dendrimers and allow cytosolic access for siRNA transfection. J Mater Chem B 2014; 2:6730-6737. [DOI: 10.1039/c4tb01153h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A simple co-caging strategy for siRNA transfection is reported that focuses on overcoming the two limitations of dendrimers – inherent toxicity and inefficient cytosolic access.
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Affiliation(s)
- Chih-Te Chien
- Institute of Biomedical Engineering and Nanomedicine
- National Health Research Institutes
- Miaoli County, Taiwan
| | - Chia-Yeh Liu
- Institute of Biomedical Engineering and Nanomedicine
- National Health Research Institutes
- Miaoli County, Taiwan
| | - Zong-Wei Wu
- Institute of Biomedical Engineering and Nanomedicine
- National Health Research Institutes
- Miaoli County, Taiwan
| | - Pin-Jyun Chen
- Institute of Biomedical Engineering and Nanomedicine
- National Health Research Institutes
- Miaoli County, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology
- College of Medicine
- National Taiwan University
- Taipei, Taiwan
| | - Shu-Yi Lin
- Institute of Biomedical Engineering and Nanomedicine
- National Health Research Institutes
- Miaoli County, Taiwan
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Chen MH, Li WS, Lue YS, Chu CL, Pan IH, Ko CH, Chen DY, Lin CH, Lin SH, Chang CP, Lin CC. Clitocybe nuda Activates Dendritic Cells and Acts as a DNA Vaccine Adjuvant. Evid Based Complement Alternat Med 2013; 2013:761454. [PMID: 24058377 PMCID: PMC3766593 DOI: 10.1155/2013/761454] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 05/25/2013] [Accepted: 06/01/2013] [Indexed: 12/11/2022]
Abstract
This work represents the first evaluation of the effects of water extract of C. nuda (WE-CN), an edible mushroom, on murine bone marrow-derived dendritic cells (BMDCs) and the potential pathway through which the effects are mediated. Our experimental results show that WE-CN could induce phenotypic maturation of DCs, as shown by the increased expression of MHC and costimulatory molecules. In addition, it also induced the proinflammatory cytokines expression on DCs and enhanced both the proliferation and IFN- γ secretion of allogenic T cells. Therefore, since WE-CN did not induce maturation of DCs generated from mice with mutated TLR-4 or TLR-2, suggesting that TLR4 and TLR2 might function as membrane receptors for WE-CN. Moreover, the mechanism of action of WE-CN may be mediated by increased phosphorylation of ERK, p38, and JNK mitogen-activated protein kinase (MAPK) and increased NF- κ B p65 activity, which are important signaling molecules downstream of TLR-4 and TLR-2. Finally, coimmunization of mice with WE-CN and a HER-2/neu DNA vaccine induced a HER-2/neu-specific Th1 response that resulted in significant inhibition of HER-2/neu overexpressing mouse bladder tumor (MBT-2) growth. These data suggest that WE-CN induces DC maturation through TLR-4 and/or TLR-2 and that WE-CN can be used as an adjuvant in cancer vaccine immunotherapy.
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Affiliation(s)
- Mei-Hsing Chen
- Plant Pathology Division, Taiwan Agricultural Research Institute (TARI), Council of Agriculture (COA), Executive Yuan, Wufeng 413, Taiwan
| | - Wei-Sung Li
- Plant Pathology Division, Taiwan Agricultural Research Institute (TARI), Council of Agriculture (COA), Executive Yuan, Wufeng 413, Taiwan
| | - Yun-Sheng Lue
- Plant Pathology Division, Taiwan Agricultural Research Institute (TARI), Council of Agriculture (COA), Executive Yuan, Wufeng 413, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology, National Taiwan University, Taipei 112, Taiwan
| | - I-Hong Pan
- Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu 300, Taiwan
| | - Ching-Huai Ko
- Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu 300, Taiwan
| | - Der-Yuan Chen
- Institute of Biomedical Science, National Chung-Hsing University, Taichung 402, Taiwan
- Faculty of Medicine, National Yang-Ming University, Taipei 112, Taiwan
- Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, Taichung 407, Taiwan
| | - Ching-Hsiung Lin
- Division of Chest Medicine, Department of Internal Medicine, Changhua Christian Hospital, Changhua 500, Taiwan
| | - Sheng-Hao Lin
- Institute of Biomedical Science, National Chung-Hsing University, Taichung 402, Taiwan
- Division of Chest Medicine, Department of Internal Medicine, Changhua Christian Hospital, Changhua 500, Taiwan
| | - Chih-Peng Chang
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Chi-Chen Lin
- Institute of Biomedical Science, National Chung-Hsing University, Taichung 402, Taiwan
- Department of Medical Research and Education, Taichung Veterans General Hospital, Taichung 407, Taiwan
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Lin YC, Huang DY, Chu CL, Lin YL, Lin WW. The tyrosine kinase Syk differentially regulates Toll-like receptor signaling downstream of the adaptor molecules TRAF6 and TRAF3. Sci Signal 2013; 6:ra71. [PMID: 23962979 DOI: 10.1126/scisignal.2003973] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Toll-like receptors (TLRs) are a major family of pattern recognition receptors, and they play a crucial role in innate immune responses. Activation of TLR4 signaling at the plasma membrane by its ligand lipopolysaccharide (LPS) stimulates a proinflammatory pathway dependent on the E3 ubiquitin ligase TRAF6 (tumor necrosis factor receptor-associated factor 6) and the kinase TAK1 (transforming growth factor β-activated kinase 1), whereas TLR4 signaling at endosomes stimulates the production of type I interferons (IFNs) through a pathway that depends on TRAF3 and the kinase TBK1 (TANK-binding kinase-1). We found that the nonreceptor tyrosine kinase Syk partially mediated the endocytosis of TLR4, but it also played a dual role in TLR4-mediated signaling. LPS-dependent stimulation of TLR4 in Syk-deficient macrophages led to enhanced activation of TAK1 and increased production of proinflammatory cytokines compared to that in wild-type macrophages. In contrast, Syk-deficient macrophages exhibited decreased TLR4-dependent activation of TBK1 signaling and production of type I IFNs. We found that Syk was present in both TRAF6- and TRAF3-containing signaling complexes; however, the LPS-dependent, lysine 63-linked ubiquitination of TRAF6 and TRAF3 was oppositely regulated by Syk. We identified the domains of Syk that interacted with TRAF3, TRAF6, TAK1, and TBK1, factors activated by multiple TLRs, which suggests that Syk may act as a common regulator of various TLR responses. Together, our results demonstrate the opposing regulatory roles of Syk in TLR-mediated TRAF6 and TRAF3 signaling pathways, which suggests that Syk may fine-tune the innate immune response to lessen inflammation.
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Affiliation(s)
- Ying-Cing Lin
- Department of Pharmacology, College of Medicine, National Taiwan University, Taipei 10051, Taiwan
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31
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Lin CY, Lu MC, Su JH, Chu CL, Shiuan D, Weng CF, Sung PJ, Huang KJ. Immunomodulatory effect of marine cembrane-type diterpenoids on dendritic cells. Mar Drugs 2013; 11:1336-50. [PMID: 23609581 PMCID: PMC3705408 DOI: 10.3390/md11041336] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 03/22/2013] [Accepted: 03/27/2013] [Indexed: 01/20/2023] Open
Abstract
Dendritic cells (DCs) are antigen presenting cells, which can present antigens to T-cells and play an important role in linking innate and adaptive immunity. DC maturation can be induced by many stimuli, including pro-inflammatory cytokines and bacterial products, such as lipopolysaccharides (LPS). Here, we examined the immunomodulatory effects of marine cembrane compounds, (9E,13E)-5-acetoxy-6-hydroxy-9,13-dimethyl-3-methylene-3,3a,4,5,6,7,8,11,12,14a-decahydro-2H-cyclotrideca[b]furan-2-one (1), (9E,13E)-5-acetoxy-6-acetyl-9,13-dimethyl-3-methylene-3,3a,4,5,6,7,8,11,12,14a-decahydro-2H-cyclotrideca[b]furan-2-one (2), lobocrassin B (3), (−)14-deoxycrassin (4), cembranolide B (5) and 13-acetoxysarcocrassolide (6) isolated from a soft coral, Lobophytum crassum, on mouse bone marrow-derived dendritic cells (BMDCs). The results revealed that cembrane-type diterpenoids, especially lobocrassin B, effectively inhibited LPS-induced BMDC activation by inhibiting the production of TNF-α. Pre-treatment of BMDCs with Lobocrassin B for 1 h is essential to prohibit the following activation induced by various toll-like receptor (TLR) agonists, such as LPS, zymosan, lipoteichoic acid (LTA) and Pam2CSK4. Inhibition of NF-κB nuclear translocation by lobocrassin B, which is a key transcription factor for cytokine production in TLR signaling, was evident as assayed by high-content image analysis. Lobocrassin B attenuated DC maturation and endocytosis as the expression levels of MHC class II and the co-stimulatory molecules were downregulated, which may affect the function of DCs to initiate the T-cell responses. Thus, lobocrassin B may have the potential in treatment of immune dysregulated diseases in the future.
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Affiliation(s)
- Ching-Yen Lin
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan; E-Mails: (C.-Y.L.); (D.S.); (C.-F.W.)
| | - Mei-Chin Lu
- Graduate Institute of Marine Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan; E-Mails: (M.-C.L.); (J.-H.S.); (P.-J.S.)
| | - Jui-Hsin Su
- Graduate Institute of Marine Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan; E-Mails: (M.-C.L.); (J.-H.S.); (P.-J.S.)
| | - Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei 100, Taiwan; E-Mail:
| | - David Shiuan
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan; E-Mails: (C.-Y.L.); (D.S.); (C.-F.W.)
| | - Ching-Feng Weng
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan; E-Mails: (C.-Y.L.); (D.S.); (C.-F.W.)
- Graduate Institute of Marine Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan; E-Mails: (M.-C.L.); (J.-H.S.); (P.-J.S.)
| | - Ping-Jyun Sung
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan; E-Mails: (C.-Y.L.); (D.S.); (C.-F.W.)
- Graduate Institute of Marine Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan; E-Mails: (M.-C.L.); (J.-H.S.); (P.-J.S.)
| | - Kao-Jean Huang
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan; E-Mails: (C.-Y.L.); (D.S.); (C.-F.W.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +886-3-863-3675; Fax: +886-3-863-3630
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32
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Fu RH, Wang YC, Liu SP, Chu CL, Tsai RT, Ho YC, Chang WL, Chiu SC, Harn HJ, Shyu WC, Lin SZ. Acetylcorynoline impairs the maturation of mouse bone marrow-derived dendritic cells via suppression of IκB kinase and mitogen-activated protein kinase activities. PLoS One 2013; 8:e58398. [PMID: 23472193 PMCID: PMC3589392 DOI: 10.1371/journal.pone.0058398] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Accepted: 02/04/2013] [Indexed: 12/21/2022] Open
Abstract
Background Dendritic cells (DCs) are major modulators in the immune system. One active field of research is the manipulation of DCs as pharmacological targets to screen novel biological modifiers for the treatment of inflammatory and autoimmune disorders. Acetylcorynoline is the major alkaloid component derived from Corydalis bungeana herbs. We assessed the capability of acetylcorynoline to regulate lipopolysaccharide (LPS)-stimulated activation of mouse bone marrow-derived DCs. Methodology/Principal Findings Our experimental data showed that treatment with up to 20 µM acetylcorynoline does not cause cytotoxicity in cells. Acetylcorynoline significantly inhibited the secretion of tumor necrosis factor-α, interleukin-6, and interleukin-12p70 by LPS-stimulated DCs. The expression of LPS-induced major histocompatibility complex class II, CD40, and CD86 on DCs was also decreased by acetylcorynoline, and the endocytic capacity of LPS-stimulated DCs was restored by acetylcorynoline. In addition, LPS-stimulated DC-elicited allogeneic T-cell proliferation was blocked by acetylcorynoline, and the migratory ability of LPS-stimulated DCs was reduced by acetylcorynoline. Moreover, acetylcorynoline significantly inhibits LPS-induced activation of IκB kinase and mitogen-activated protein kinase. Importantly, administration of acetylcorynoline significantly attenuates 2,4-dinitro-1-fluorobenzene-induced delayed-type hypersensitivity. Conclusions/Significance Acetylcorynoline may be one of the potent immunosuppressive agents through the blockage of DC maturation and function.
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Affiliation(s)
- Ru-Huei Fu
- Graduate Institute of Immunology, China Medical University, Taichung, Taiwan
- Center for Neuropsychiatry, China Medical University Hospital, Taichung, Taiwan
- * E-mail: (RHF); (SRL)
| | - Yu-Chi Wang
- Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan
| | - Shih-Ping Liu
- Center for Neuropsychiatry, China Medical University Hospital, Taichung, Taiwan
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | - Ching-Liang Chu
- Graduate Institute of Immunology, National Taiwan University, Taipei, Taiwan
| | - Rong-Tzong Tsai
- Institute of Biochemistry and Biotechnology, Chung Shan Medical University, Taichung, Taiwan
| | - Yu-Chen Ho
- Graduate Institute of Immunology, China Medical University, Taichung, Taiwan
| | - Wen-Lin Chang
- Graduate Institute of Immunology, China Medical University, Taichung, Taiwan
| | - Shao-Chih Chiu
- Graduate Institute of Immunology, China Medical University, Taichung, Taiwan
- Center for Neuropsychiatry, China Medical University Hospital, Taichung, Taiwan
| | - Horng-Jyh Harn
- Center for Neuropsychiatry, China Medical University Hospital, Taichung, Taiwan
| | - Woei-Cherng Shyu
- Graduate Institute of Immunology, China Medical University, Taichung, Taiwan
- Center for Neuropsychiatry, China Medical University Hospital, Taichung, Taiwan
| | - Shinn-Zong Lin
- Graduate Institute of Immunology, China Medical University, Taichung, Taiwan
- Center for Neuropsychiatry, China Medical University Hospital, Taichung, Taiwan
- China Medical University Beigang Hospital, Yunlin, Taiwan
- * E-mail: (RHF); (SRL)
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Fu RH, Liu SP, Chu CL, Lin YH, Ho YC, Chiu SC, Lin WY, Shyu WC, Lin SZ. Myricetin attenuates lipopolysaccharide-stimulated activation of mouse bone marrow-derived dendritic cells through suppression of IKK/NF-κB and MAPK signalling pathways. J Sci Food Agric 2013; 93:76-84. [PMID: 22689051 DOI: 10.1002/jsfa.5733] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2012] [Revised: 03/30/2012] [Accepted: 04/16/2012] [Indexed: 06/01/2023]
Abstract
BACKGROUND Myricetin is a naturally occurring flavonoid that is found in many fruits, vegetables, teas and medicinal herbs. It has been demonstrated to have anti-inflammatory properties, but, to date, no studies have described the immunomodulatory effects of myricetin on the functions of dendritic cells (DCs). The aim of this study was to evaluate the potential for myricetin to modulate lipopolysaccharide (LPS)-stimulated activation of mouse bone marrow-derived DCs. RESULTS Our experimental data showed that treatment with myricetin up to 10 µg mL(-1) does not cause cytotoxicity in cells. Myricetin significantly decreased the secretion of tumour necrosis factor-α, interleukin-6 and interleukin-12p70 by LPS-stimulated DCs. The expression of LPS-induced major histocompatibility class II, CD40 and CD86 on DCs was also inhibited by myricetin, and the endocytic and migratory capacity of LPS-stimulated DCs was blocked by myricentin. In addition, LPS-stimulated DC-elicited allogeneic T-cell proliferation was reduced by myricetin. Moreover, our results confirmed that myricetin attenuates the responses of LPS-stimulated activation of DCs via suppression of IκB kinase/nuclear factor-κB and mitogen-activated protein kinase-dependent pathways. CONCLUSION Myricetin has novel immunopharmacological activity, and modulation of DCs by myricetin may be an attractive strategy for the treatment of inflammatory and autoimmune disorders, and for transplantation.
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Affiliation(s)
- Ru-Huei Fu
- Graduate Institute of Immunology, China Medical University, Taichung, Taiwan; Center for Neuropsychiatry, China Medical University Hospital, Taichung, Taiwan
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Leung TK, Lin JM, Chu CL, Wu YS, Chao YJ. Efficacy of gradual pressure-decline compressing stockings in Asian patients with lower leg varicose veins: analysis by general measurements and magnetic resonance image. INT ANGIOL 2012; 31:534-543. [PMID: 23222931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
AIM Most applications of gradual pressure-decline compressing stockings (GPDCS) are used in the United States and Western European countries, with over a decade of clinical experiments. Up to know, there is no standard establishment of gradual pressure-decline compressing stockings for Asian patients with venous insufficiency and varicose vein formations. METHODS We collected data on volunteer candidates of varicose vein for general measurements and assessments and magnetic resonance imaging (MRI) by non-contrast enhanced MRV techniques, and for post processing data analysis. RESULTS Clinical use of GPCDS provide a mild to moderate improvement in the varicose vein conditions of patients with deep venous insufficiency by improving their deep vein circulation, by general measurements; recording major symptoms and complaint; comfort and stretching/flexibility to the candidates after using GPDCS; and area changes/flow velocity changes/available hemoglobin changes in deep veins monitored by MRI. CONCLUSION The benefits and data collected in these results may help in developing compression stockings standards in Taiwanese and Asian countries, and to establishing criterias for product sizes, compression levels, and related parameters.
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Affiliation(s)
- T K Leung
- Department of Diagnostic Radiology, Taipei Medical University Hospital, Taiwan.
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Wang CL, Lu CY, Pi CC, Zhuang YJ, Chu CL, Liu WH, Chen CJ. Extracellular polysaccharides produced by Ganoderma formosanum stimulate macrophage activation via multiple pattern-recognition receptors. Altern Ther Health Med 2012; 12:119. [PMID: 22883599 PMCID: PMC3495220 DOI: 10.1186/1472-6882-12-119] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Accepted: 08/05/2012] [Indexed: 12/03/2022]
Abstract
Background The fungus of Ganoderma is a traditional medicine in Asia with a variety of pharmacological functions including anti-cancer activities. We have purified an extracellular heteropolysaccharide fraction, PS-F2, from the submerged mycelia culture of G. formosanum and shown that PS-F2 exhibits immunostimulatory activities. In this study, we investigated the molecular mechanisms of immunostimulation by PS-F2. Results PS-F2-stimulated TNF-α production in macrophages was significantly reduced in the presence of blocking antibodies for Dectin-1 and complement receptor 3 (CR3), laminarin, or piceatannol (a spleen tyrosine kinase inhibitor), suggesting that PS-F2 recognition by macrophages is mediated by Dectin-1 and CR3 receptors. In addition, the stimulatory effect of PS-F2 was attenuated in the bone marrow-derived macrophages from C3H/HeJ mice which lack functional Toll-like receptor 4 (TLR4). PS-F2 stimulation triggered the phosphorylation of mitogen-activated protein kinases JNK, p38, and ERK, as well as the nuclear translocation of NF-κB, which all played essential roles in activating TNF-α expression. Conclusions Our results indicate that the extracellular polysaccharides produced by G. formosanum stimulate macrophages via the engagement of multiple pattern-recognition receptors including Dectin-1, CR3 and TLR4, resulting in the activation of Syk, JNK, p38, ERK, and NK-κB and the production of TNF-α.
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Chu CL, Yu YL, Kung YC, Liao PY, Liu KJ, Tseng YT, Lin YC, Hsieh SSY, Chong PCS, Yang CY. The immunomodulatory activity of meningococcal lipoprotein Ag473 depends on the conformation made up of the lipid and protein moieties. PLoS One 2012; 7:e40873. [PMID: 22844415 PMCID: PMC3402496 DOI: 10.1371/journal.pone.0040873] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Accepted: 06/18/2012] [Indexed: 11/29/2022] Open
Abstract
We have previously demonstrated that the meningococcal antigen Ag473 in the presence of Freund’s adjuvant can elicit protective immune responses in mouse challenge model. In this study, we evaluated the structural requirement for the immunological activity and the possible signaling pathway of recombinant Ag473 antigen produced in E. coli. We found that lipidated Ag473 (L-Ag473) possesses an intrinsic adjuvant activity that could be attributed to its ability to activate dendritic cells and promote their maturation. In addition, we found that L-Ag473 can activate human monocytes and promote maturation of human monocyte-derived dendritic cells. These results provide an indirect support that L-Ag473 may also be immunogenic in human. Interestingly, the observed activity is dependent on the overall conformation of L-Ag473 because heating and proteinase K treatment can diminish and abolish the activity. Furthermore, our data suggest a species-differential TLR recognition of L-Ag473. Overall, these data suggest a new paradigm for the ligand-TLR interaction in addition to demonstrating the self-adjuvanting activity of the vaccine candidate L-Ag473.
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Affiliation(s)
- Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yen-Ling Yu
- Vaccine Research and Development Center, National Health Research Institutes, Miaoli, Taiwan
| | - Yueh-Chen Kung
- Vaccine Research and Development Center, National Health Research Institutes, Miaoli, Taiwan
| | - Pei-Yu Liao
- Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan
| | - Ko-Jiunn Liu
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan
- School of Medical Laboratory Science and Biotechnology, Taipei Medical University, Taipei, Taiwan
| | - Yen-Tzu Tseng
- Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan
| | - Yuan-Chuen Lin
- Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan
| | - Steve Shih-Yang Hsieh
- Vaccine Research and Development Center, National Health Research Institutes, Miaoli, Taiwan
| | - Pele Choi-Sing Chong
- Vaccine Research and Development Center, National Health Research Institutes, Miaoli, Taiwan
| | - Chiou-Ying Yang
- Vaccine Research and Development Center, National Health Research Institutes, Miaoli, Taiwan
- Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan
- * E-mail:
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Tsai JP, Lee MH, Hsu SC, Chen MY, Liu SJ, Chang JT, Liao CT, Cheng AJ, Chong P, Chu CL, Shen CR, Chen HW. CD4+ T cells disarm or delete cytotoxic T lymphocytes under IL-17-polarizing conditions. J Immunol 2012; 189:1671-9. [PMID: 22798680 DOI: 10.4049/jimmunol.1103447] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Previous studies have shown that TGF-β acts cooperatively with IL-6 to elicit a high frequency of IL-17-secreting CD4(+) T cells (termed Th17) and an elevated CD8(+)IL-17(+) T cell population (termed Tc17). These CD8(+) cells fail to behave like most cytotoxic T lymphocytes that express IFN-γ and granzyme B, but they exhibit a noncytotoxic phenotype. Although a significant increase in the number of these Tc17 cells was found in tumors, their role and interaction with other cell types remain unclear. In this study, we demonstrate that the presence of CD4(+)CD25(-) T cells, but not the CD4(+)CD25(+) (regulatory T [Treg]) cell population, significantly reduced the elicitation of Tc17 cells, possibly as a result of the induction of apoptotic signals. Importantly, these signals may be derived from soluble mediators, and the addition of anti-IL-2 restored the reduction of Tc17 cells in the presence of CD4(+)CD25(-) T cells. Finally, the elicited Tc17 and Treg cells exhibited a close association in patients with head and neck cancer, indicating that the surrounding Treg cells might maintain the survival of the Tc17 cells. Taken together, these results reveal an intriguing mechanism in which Tc17 cells are controlled by a finely tuned collaboration between the different types of CD4(+) T cells in distinct tumor microenvironments.
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Affiliation(s)
- Jy-Ping Tsai
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Miaoli 350, Taiwan
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Hu T, Chu CL, Wu SL, Xin YC, Lu J, Chu PK. Surface hardening of NiTi shape memory alloy induced by the nanostructured layer after surface mechanical attrition treatment. J Nanosci Nanotechnol 2011; 11:10954-10957. [PMID: 22409033 DOI: 10.1166/jnn.2011.4062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
To conduct grain refinement induced by plastic deformation, NiTi shape memory alloy is processed by surface mechanical attrition treatment. The process leads to surface nanocrystallization and consequently surface hardening. The cross sectional microhardness of the treated NiTi is measured and compared to those of annealed NiTi specimens with residual stress relaxation and recrystallization. Our results show that surface nanocrystallization induced by surface mechanical attrition treatment is an effective method to enhance the surface hardness and anti-wear properties of NiTi shape memory alloy for the biomedical application.
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Affiliation(s)
- T Hu
- Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
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Chu CL, Ji HL, Guo C, Sheng XB, Dong YS, Lin PH, Hu T, Chu PK. Surface nanomechanical behavior of ZrN and ZrCN films deposited on NiTi shape memory alloy by magnetron sputtering. J Nanosci Nanotechnol 2011; 11:11176-11180. [PMID: 22409080 DOI: 10.1166/jnn.2011.4051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Surface nanomechanical behavior under nanoindentation of ZrN and ZrCN film on NiTi substrate was studied. The surface hardness and modulus of the films increase initially with larger nanoindentation depths and then reach their maximum values. Afterwards, they diminish gradually and finally reaching plateau values which are the composite modulus and composite hardness derived from the ZrN/ZrCN film and NiTi substrate. They are higher than those of electropolished NiTi SMA due to the properties of ZrN and ZrCN. In comparison, the surface nanomechanical properties of electropolished NiTi exhibit a different change with depths.
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Affiliation(s)
- C L Chu
- School of Materials Science and Engineering and Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University Nanjing 211189, China
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Abstract
DNA vaccines have a wide range of applications, with several potential advantages compared to other vaccine technologies for diseases. No DNA vaccine has yet been licensed in humans; however, a lot of effort has been made to enhance their potential as human vaccines and therapeutics. Finding an effective adjuvant is a strategy to improve the efficacy of DNA vaccines. We recently identified a fungal immunomodulatory protein Ling Zhi-8 (LZ-8) with stimulatory activity on dendritic cells (DCs) that significantly increases the efficacy of a cancer DNA vaccine in a preclinical tumor model, suggesting that LZ-8 may be a good candidate adjuvant for vaccine development. Here we discuss the possibility for applying LZ-8 to a cancer DNA vaccine for humans.
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Affiliation(s)
- Ching-Liang Chu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan.
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Lin MK, Yu YL, Chen KC, Chang WT, Lee MS, Yang MJ, Cheng HC, Liu CH, Chen DC, Chu CL. Kaempferol from Semen cuscutae attenuates the immune function of dendritic cells. Immunobiology 2011; 216:1103-9. [DOI: 10.1016/j.imbio.2011.05.002] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2011] [Revised: 04/12/2011] [Accepted: 05/01/2011] [Indexed: 12/14/2022]
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Römkens PFAM, Brus DJ, Guo HY, Chu CL, Chiang CM, Koopmans GF. Impact of model uncertainty on soil quality standards for cadmium in rice paddy fields. Sci Total Environ 2011; 409:3098-3105. [PMID: 21632090 DOI: 10.1016/j.scitotenv.2011.04.045] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 04/26/2011] [Accepted: 04/26/2011] [Indexed: 05/30/2023]
Abstract
At present, soil quality standards used for agriculture do not consider the influence of pH and CEC on the uptake of pollutants by crops. A database with 750 selected paired samples of cadmium (Cd) in soil and paddy rice was used to calibrate soil to plant transfer models using the soil metal content, pH, and CEC or soil Cd and Zn extracted by 0.01 M CaCl₂ as explanatory variables. The models were validated against a set of 2300 data points not used in the calibration. These models were then used inversely to derive soil quality standards for Japonica and Indica rice cultivars based on the food quality standards for rice. To account for model uncertainty, strict soil quality standards were derived considering a maximum probability that rice exceeds the food quality standard equal to 10 or 5%. Model derived soil standards based on Aqua Regia ranged from less than 0.3 mg kg⁻¹ for Indica at pH 4.5 to more than 6 mg kg⁻¹ for Japonica-type cultivars in clay soils at pH 7. Based on the CaCl₂ extract, standards ranged from 0.03 mg kg⁻¹ Cd for Indica cultivars to 0.1 mg kg⁻¹ Cd for Japonica cultivars. For both Japonica and Indica-type cultivars, the soil quality standards must be reduced by a factor of 2 to 3 to obtain the strict standards. The strong impact of pH and CEC on soil quality standards implies that it is essential to correct for soil type when deriving national or local standards. Validation on the remaining 2300 samples indicated that both types of models were able to accurately predict (> 92%) whether rice grown on a specific soil will meet the food quality standard used in Taiwan.
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Affiliation(s)
- P F A M Römkens
- Soil Science Center, Alterra, Wageningen, UR. P.O. Box 47, 6700AA Wageningen, The Netherlands.
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Lin CC, Yu YL, Shih CC, Liu KJ, Ou KL, Hong LZ, Chen JDC, Chu CL. A novel adjuvant Ling Zhi-8 enhances the efficacy of DNA cancer vaccine by activating dendritic cells. Cancer Immunol Immunother 2011; 60:1019-27. [PMID: 21499904 PMCID: PMC11029078 DOI: 10.1007/s00262-011-1016-4] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2011] [Accepted: 04/04/2011] [Indexed: 02/01/2023]
Abstract
DNA vaccine has been suggested to use in cancer therapy, but the efficacy remains to be improved. The immunostimulatory effect of a fungal immunomodulatory protein Ling Zhi-8 (LZ-8) isolated from Ganoderma lucidum has been reported. In this study, we tested the adjuvanticity of LZ-8 for HER-2/neu DNA vaccine against p185(neu) expressing tumor MBT-2 in mice. We found that recombinant LZ-8 stimulated mouse bone marrow-derived dendritic cells (DCs) via TLR4 and its stimulatory effect was not due to any microbe contaminant. In addition, LZ-8 enhanced the ability of DCs to induce antigen-specific T cell activation in vitro and in a subunit vaccine model in vivo. Surprisingly, LZ-8 cotreatment strongly improved the therapeutic effect of DNA vaccine against MBT-2 tumor in mice. This increase in antitumor activity was attributed to the enhancement of vaccine-induced Th1 and CTL responses. Consistent with the results from DCs, the promoting effect of LZ-8 on DNA vaccine was diminished when the MBT-2 tumor cells were grown in TLR4 mutant mice. Thus, we concluded that LZ-8 may be a promising adjuvant to enhance the efficacy of DNA vaccine by activating DCs via TLR4.
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MESH Headings
- Adjuvants, Immunologic
- Animals
- Blotting, Western
- Cancer Vaccines/therapeutic use
- Dendritic Cells/immunology
- Disease Models, Animal
- Fungal Proteins/genetics
- Fungal Proteins/immunology
- Lymphocyte Activation
- Mice
- Mice, Inbred C3H
- Mice, Inbred C57BL
- RNA, Messenger/genetics
- Receptor, ErbB-2/genetics
- Receptor, ErbB-2/immunology
- Reverse Transcriptase Polymerase Chain Reaction
- T-Lymphocytes, Cytotoxic/immunology
- Transduction, Genetic
- Urinary Bladder Neoplasms/genetics
- Urinary Bladder Neoplasms/immunology
- Urinary Bladder Neoplasms/therapy
- Vaccines, DNA/therapeutic use
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Affiliation(s)
- Chi-Chen Lin
- Institute of Biomedical Sciences, National Chung Hsin University, Taichung, Taiwan.
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Fu RH, Hran HJ, Chu CL, Huang CM, Liu SP, Wang YC, Lin YH, Shyu WC, Lin SZ. Lipopolysaccharide-stimulated activation of murine DC2.4 cells is attenuated by n-butylidenephthalide through suppression of the NF-κB pathway. Biotechnol Lett 2011; 33:903-10. [DOI: 10.1007/s10529-011-0528-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Accepted: 12/23/2010] [Indexed: 12/16/2022]
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Scapini P, Hu Y, Chu CL, Migone TS, Defranco AL, Cassatella MA, Lowell CA. Myeloid cells, BAFF, and IFN-gamma establish an inflammatory loop that exacerbates autoimmunity in Lyn-deficient mice. ACTA ACUST UNITED AC 2010; 207:1757-73. [PMID: 20624892 PMCID: PMC2916124 DOI: 10.1084/jem.20100086] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Autoimmunity is traditionally attributed to altered lymphoid cell selection and/or tolerance, whereas the contribution of innate immune cells is less well understood. Autoimmunity is also associated with increased levels of B cell–activating factor of the TNF family (BAFF; also known as B lymphocyte stimulator), a cytokine that promotes survival of self-reactive B cell clones. We describe an important role for myeloid cells in autoimmune disease progression. Using Lyn-deficient mice, we show that overproduction of BAFF by hyperactive myeloid cells contributes to inflammation and autoimmunity in part by acting directly on T cells to induce the release of IFN-γ. Genetic deletion of IFN-γ or reduction of BAFF activity, achieved by either reducing myeloid cell hyperproduction or by treating with an anti-BAFF monoclonal antibody, reduced disease development in lyn−/− mice. The increased production of IFN-γ in lyn−/− mice feeds back on the myeloid cells to further stimulate BAFF release. Expression of BAFF receptor on T cells was required for their full activation and IFN-γ release. Overall, our data suggest that the reciprocal production of BAFF and IFN-γ establishes an inflammatory loop between myeloid cells and T cells that exacerbates autoimmunity in this model. Our findings uncover an important pathological role of BAFF in autoimmune disorders.
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Affiliation(s)
- Patrizia Scapini
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
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Huang RY, Yu YL, Cheng WC, OuYang CN, Fu E, Chu CL. Immunosuppressive Effect of Quercetin on Dendritic Cell Activation and Function. J I 2010; 184:6815-21. [DOI: 10.4049/jimmunol.0903991] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Abstract
The adapter proteins DAP12 and FcRgamma associate with a wide spectrum of receptors in a variety of innate immune cells to mediate intracellular signaling pathways when their cognate receptor is engaged. These adapter proteins are coupled to their receptors through charged residues within the transmembrane regions of the adapter and receptor. DAP12 and FcRgamma contain specific protein domains (referred to as immunoreceptor tyrosine-based activation motifs) that serve as the substrates and docking sites for kinases, allowing amplification of intracellular signaling reactions. Recent research has broadened the repertoire of receptors that utilize these adapters for signaling to include not only novel immunoglobulin superfamily members but also cytokine receptors, integrins, and other adhesion molecules. There is abundant evidence that these multifunctional signaling adapters also mediate inhibitory activity, downmodulating signaling from Toll-like receptors and other heterologous receptors. In this review, we discuss the newly described receptors that utilize DAP12 and/or FcRgamma adapters to modulate innate immune responses.
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Affiliation(s)
- Jessica A. Hamerman
- Immunology Program, Benaroya Research Institute at Virginia Mason, Seattle, WA
- Department of Immunology, University of Washington, Box 357650, Seattle, WA
| | - Minjian Ni
- Immunology Program, Benaroya Research Institute at Virginia Mason, Seattle, WA
| | - Justin R. Killebrew
- Immunology Program, Benaroya Research Institute at Virginia Mason, Seattle, WA
- Department of Immunology, University of Washington, Box 357650, Seattle, WA
| | - Ching-Liang Chu
- Immunology Research Center, National Health Research Institutes, Taiwan
| | - Clifford A Lowell
- Department of Laboratory Medicine, University of California, San Francisco, CA
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Lin MK, Lee MS, Chang WT, Yang MC, Chu CL. Study the immunomodulatory activity of Semen cuscutae and identify the active components. J Biosci Bioeng 2009. [DOI: 10.1016/j.jbiosc.2009.08.492] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Yu YL, Chen IH, Shen KY, Huang RY, Wang WR, Chou CJ, Chang TT, Chu CL. A triterpenoid methyl antcinate K isolated from Antrodia cinnamomea promotes dendritic cell activation and Th2 differentiation. Eur J Immunol 2009; 39:2482-91. [DOI: 10.1002/eji.200839039] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Römkens PFAM, Guo HY, Chu CL, Liu TS, Chiang CF, Koopmans GF. Prediction of Cadmium uptake by brown rice and derivation of soil-plant transfer models to improve soil protection guidelines. Environ Pollut 2009; 157:2435-44. [PMID: 19345457 DOI: 10.1016/j.envpol.2009.03.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2008] [Revised: 03/03/2009] [Accepted: 03/07/2009] [Indexed: 05/11/2023]
Abstract
Cadmium (Cd) levels in paddy fields across Taiwan have increased due to emission from industry. To ensure the production of rice that meets food quality standards, predictive models or suitable soil tests are needed to evaluate the quality of soils to be used for rice cropping. Levels of Cd in soil and rice grains were measured in 19 paddy fields across the western plains in Taiwan. Cadmium levels in soil range from less than 0.1 mg kg(-1) to 30 mg kg(-1). Measured Cd levels in brown rice were predicted very well (R(2) > 0.8) based on Cd and Zinc in a 0.01 M CaCl(2) extract or a soil-plant transfer model using the reactive soil Cd content, pH, and cation exchange capacity. In contrast to current soil quality standards used in Taiwan, such models are effective in identifying soils where Cd in rice will exceed food quality standards.
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Affiliation(s)
- P F A M Römkens
- Soil Science Center, Alterra - Wageningen University and Research Centre (WUR), PO Box 47, 6700 AA Wageningen, The Netherlands.
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