1
|
Venken K, Decruy T, Sparwasser T, Elewaut D. Tregs protect against invariant NKT cell-mediated autoimmune colitis and hepatitis. Immunology 2024; 171:277-285. [PMID: 37984469 DOI: 10.1111/imm.13718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 11/07/2023] [Indexed: 11/22/2023] Open
Abstract
Immunomodulatory T cells play a pivotal role in protection against (auto)immune-mediated diseases that open perspectives for therapeutic modulation. However, how immune regulatory networks operate in vivo is less understood. To this end, we focused on FOXP3+CD4+CD25+ regulatory T cells (Tregs) and invariant natural killer T (iNKT) cells, two lymphocyte populations that independently regulate adaptive and innate immune responses. In vitro, a functional interplay between Tregs and iNKT cells has been described, but whether Tregs modulate the function and phenotype of iNKT cell subsets in vivo and whether this controls iNKT-mediated autoimmunity is unclear. Taking advantage of the conditional depletion of Tregs, we examined the in vivo interplay between iNKT and Treg cells in steady state and in preclinical models of liver and gut autoimmunity. Under non-inflamed conditions, Treg depletion enhanced glycolipid-mediated iNKT cell responses, with a general impact on Type 1, 2 and 17 iNKT subsets. Moreover, in vivo iNKT activation in the absence of Tregs suppressed the induction of iNKT anergy, consistent with a reduction in programmed cell death receptor 1 (PD-1) expression. Importantly, we unveiled a clear role for an in vivo Treg-iNKT crosstalk both in concanavalin A-induced acute hepatitis and oxazolone-induced colitis. Here, the absence of Tregs led to a markedly enhanced liver and gut pathology, which was not observed in iNKT-deficient mice. Taken together, these results provide evidence for a functional interplay between regulatory T cell subsets critical in controlling the onset of autoimmune disease.
Collapse
Affiliation(s)
- Koen Venken
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
| | - Tine Decruy
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
| | - Tim Sparwasser
- Department of Medical Microbiology and Hygiene, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Dirk Elewaut
- Molecular Immunology and Inflammation Unit, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Department of Internal Medicine and Pediatrics (Rheumatology unit), Ghent University, Ghent, Belgium
| |
Collapse
|
2
|
Katsnelson EN, Spengler A, Domenico J, Couts KL, Loh L, Gapin L, McCarter MD, Tobin RP. Dysfunctional states of unconventional T-cell subsets in cancer. J Leukoc Biol 2024; 115:36-46. [PMID: 37837379 PMCID: PMC10843843 DOI: 10.1093/jleuko/qiad129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/25/2023] [Accepted: 09/28/2023] [Indexed: 10/16/2023] Open
Abstract
Unconventional T cells represent a promising therapeutic agent to overcome the current limitations of immunotherapies due to their universal T-cell receptors, ability to respond directly to cytokine stimulation, and capacity to recruit and modulate conventional immune cells in the tumor microenvironment. Like conventional T cells, unconventional T cells can enter a dysfunctional state, and the functional differences associated with this state may provide insight into the discrepancies observed in their role in antitumor immunity in various cancers. The exhaustive signature of unconventional T cells differs from conventional αβ T cells, and understanding the differences in the mechanisms underlying exhaustive differentiation in these cell types may aid in the discovery of new treatments to improve sustained antitumor responses. Ongoing clinical trials investigating therapies that leverage unconventional T-cell populations have shown success in treating hematologic malignancies and reducing the immunosuppressive tumor environment. However, several hurdles remain to extend these promising results into solid tumors. Here we discuss the current knowledge on unconventional T-cell function/dysfunction and consider how the incorporation of therapies that modulate unconventional T-cell exhaustion may aid in overcoming the current limitations of immunotherapy. Additionally, we discuss how components of the tumor microenvironment alter the functions of unconventional T cells and how these changes can affect tumor infiltration by lymphocytes and alter conventional T-cell responses.
Collapse
Affiliation(s)
- Elizabeth N. Katsnelson
- Department of Surgery, Division of Surgical Oncology, University of Colorado Anschutz Medical Campus, 12800 E 19th Ave, Aurora, CO 80045, United States
| | - Andrea Spengler
- Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, 12800 E 19th Ave, Aurora, CO 80045, United States
| | - Joanne Domenico
- Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, 12800 E 19th Ave, Aurora, CO 80045, United States
| | - Kasey L. Couts
- Department of Medicine, Division of Medical Oncology, University of Colorado Anschutz Medical Campus, 12800 E 19th Ave, Aurora, CO 80045, United States
| | - Liyen Loh
- Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, 12800 E 19th Ave, Aurora, CO 80045, United States
| | - Laurent Gapin
- Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, 12800 E 19th Ave, Aurora, CO 80045, United States
| | - Martin D. McCarter
- Department of Surgery, Division of Surgical Oncology, University of Colorado Anschutz Medical Campus, 12800 E 19th Ave, Aurora, CO 80045, United States
| | - Richard P. Tobin
- Department of Surgery, Division of Surgical Oncology, University of Colorado Anschutz Medical Campus, 12800 E 19th Ave, Aurora, CO 80045, United States
| |
Collapse
|
3
|
Weng S, Huang L, Cai B, He L, Wen S, Li J, Zhong Z, Zhang H, Huang C, Yang Y, Jiang Q, Liu F. Astragaloside IV ameliorates experimental autoimmune myasthenia gravis by regulating CD4 + T cells and altering gut microbiota. Chin Med 2023; 18:97. [PMID: 37542273 PMCID: PMC10403896 DOI: 10.1186/s13020-023-00798-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 07/10/2023] [Indexed: 08/06/2023] Open
Abstract
BACKGROUND Myasthenia gravis (MG) is an antibody-mediated autoimmune disease and its pathogenesis is closely related to CD4 + T cells. In recent years, gut microbiota is considered to play an important role in the pathogenesis of MG. Astragaloside IV (AS-IV) is one of the main active components extracted from Astragalus membranaceus and has immunomodulatory effects. To study the immunomodulatory effect of AS-IV and the changes of gut microbiota on experimental autoimmune myasthenia gravis (EAMG) mice, we explore the possible mechanism of AS-IV in improving MG. METHODS In this study, network pharmacology was utilized to screen the crucial targets of AS-IV in the treatment of MG. Subsequently, a Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis was performed to identify potential pathways through which AS-IV acts against MG. Furthermore, experimental investigations were conducted to validate the underlying mechanism of AS-IV in MG treatment. Before modeling, 5 mice were randomly selected as the control group (CFA group), and the other 10 were induced to EAMG model. These mice were randomly divided into EAMG group and EAMG + AS-IV group, n = 5/group. In EAMG + AS-IV group, AS-IV was administered by gavage. CFA and EAMG groups were given the same volume of PBS. Body weight, grip strength and clinical symptoms were assessed and recorded weekly. At the last administration, the feces were collected for 16S RNA microbiota analysis. The levels of Treg, Th1 and Th17 cells in spleen and Th1 and Th17 cells in thymus were detected by flow cytometry. The levels of IFN-γ, IL-17 and TGF-β in serum were measured by ELISA. Furthermore, fecal microbial transplantation (FMT) experiments were performed for exploring the influence of changed intestinal flora on EAMG. After EAMG model was induced, the mice were treated with antibiotics daily for 4 weeks to germ-free. Then germ-free EAMG mice were randomly divided into two groups: FMT EAMG group, FMT AS-IV group, n = 3/group. Fecal extractions from EAMG and EAMG + AS-IV groups as gathered above were used to administered daily to the respective groups for 4 weeks. Body weight, grip strength and clinical symptoms were assessed and recorded weekly. The levels of Treg, Th1 and Th17 cells in spleen and Th1 and Th17 cells in thymus were detected at the last administration. The levels of IFN-γ, IL-17 and TGF-β in serum were measured by ELISA. RESULTS The network pharmacology and KEGG pathway analysis revealed that AS-IV regulates T cell pathways, including T cell receptor signaling pathway and Th17 cell differentiation, suggesting its potential in improving MG. Further experimental verification demonstrated that AS-IV administration improved muscle strength and body weight, reduced the level of Th1 and Th17 cells, enhanced the level of Treg cells, and resulted in alterations of the gut microbiota, including changes in beta diversity, the Firmicutes/Bacteroidetes (F/B) ratio, and the abundance of Clostridia in EAMG mice. We further conducted FMT tests and demonstrated that the EAMG Abx-treated mice which were transplanted the feces of mice treated with AS-IV significantly alleviated myasthenia symptoms, reduced Th1 and Th17 cells levels, and increased Treg cell levels. CONCLUSION This study speculated that AS-IV ameliorates EAMG by regulating CD4 + T cells and altering the structure and species of gut microbiota of EAMG.
Collapse
Affiliation(s)
- Senhui Weng
- Department of Spleen and Stomach Diseases, Guangdong Provincial Hospital of Chinese Medicine, No. 111 Dade Road, Yuexiu District, Guangzhou, 510120, China
- Guangzhou University of Chinese Medicine, No.12 Airport Road, Baiyun District, Guangzhou, 510422, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, No.12 Airport Road, Baiyun District, Guangzhou, 510422, China
| | - Linwen Huang
- Guangzhou University of Chinese Medicine, No.12 Airport Road, Baiyun District, Guangzhou, 510422, China
| | - Bingxing Cai
- Guangzhou University of Chinese Medicine, No.12 Airport Road, Baiyun District, Guangzhou, 510422, China
| | - Long He
- Guangzhou University of Chinese Medicine, No.12 Airport Road, Baiyun District, Guangzhou, 510422, China
- Department of Spleen and Stomach Diseases, First Affiliated Hospital of Guangzhou University of Chinese Medicine, No.16 Airport Road, Baiyun District, Guangzhou, 510422, China
| | - Shuting Wen
- Department of Spleen and Stomach Diseases, Guangdong Provincial Hospital of Chinese Medicine, No. 111 Dade Road, Yuexiu District, Guangzhou, 510120, China
- Guangzhou University of Chinese Medicine, No.12 Airport Road, Baiyun District, Guangzhou, 510422, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, No.12 Airport Road, Baiyun District, Guangzhou, 510422, China
| | - Jinghao Li
- Department of Traditional Chinese Medicine of the Sixth Affiliated Hospital, School of Medicine, South China University of Technology, Foshan, 528000, China
| | - Zhuotai Zhong
- Guangzhou University of Chinese Medicine, No.12 Airport Road, Baiyun District, Guangzhou, 510422, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, No.12 Airport Road, Baiyun District, Guangzhou, 510422, China
| | - Haiyan Zhang
- Department of Spleen and Stomach Diseases, Guangdong Provincial Hospital of Chinese Medicine, No. 111 Dade Road, Yuexiu District, Guangzhou, 510120, China
| | - Chongyang Huang
- Department of Spleen and Stomach Diseases, Guangdong Provincial Hospital of Chinese Medicine, No. 111 Dade Road, Yuexiu District, Guangzhou, 510120, China
| | - Yunying Yang
- Department of Spleen and Stomach Diseases, First Affiliated Hospital of Guangzhou University of Chinese Medicine, No.16 Airport Road, Baiyun District, Guangzhou, 510422, China
| | - Qilong Jiang
- Department of Spleen and Stomach Diseases, First Affiliated Hospital of Guangzhou University of Chinese Medicine, No.16 Airport Road, Baiyun District, Guangzhou, 510422, China.
| | - Fengbin Liu
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, No.12 Airport Road, Baiyun District, Guangzhou, 510422, China.
- Department of Spleen and Stomach Diseases, First Affiliated Hospital of Guangzhou University of Chinese Medicine, No.16 Airport Road, Baiyun District, Guangzhou, 510422, China.
- Baiyun Hospital of the First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 2, Helongqi Road, Renhe Town, Baiyun District, Guangzhou, 510000, China.
| |
Collapse
|
4
|
NKT and NKT-like Cells in Autoimmune Neuroinflammatory Diseases-Multiple Sclerosis, Myasthenia Gravis and Guillain-Barre Syndrome. Int J Mol Sci 2021; 22:ijms22179520. [PMID: 34502425 PMCID: PMC8431671 DOI: 10.3390/ijms22179520] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/27/2021] [Accepted: 08/27/2021] [Indexed: 12/14/2022] Open
Abstract
NKT cells comprise three subsets—type I (invariant, iNKT), type II, and NKT-like cells, of which iNKT cells are the most studied subset. They are capable of rapid cytokine production after the initial stimulus, thus they may be important for polarisation of Th cells. Due to this, they may be an important cell subset in autoimmune diseases. In the current review, we are summarising results of NKT-oriented studies in major neurological autoimmune diseases—multiple sclerosis, myasthenia gravis, and Guillain-Barre syndrome and their corresponding animal models.
Collapse
|
5
|
Zhao R, Luo S, Zhao C. The role of innate immunity in myasthenia gravis. Autoimmun Rev 2021; 20:102800. [PMID: 33722749 DOI: 10.1016/j.autrev.2021.102800] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 01/22/2021] [Indexed: 12/19/2022]
Abstract
Myasthenia gravis (MG) is a T cell-driven, B cell-mediated and autoantibody-dependent autoimmune disorder against neuromuscular junctions (NMJ). Accumulated evidence has emerged regarding the role of innate immunity in the pathogenesis of MG. In this review, we proposed two hypothesis underlying the pathological mechanism. In the context of gene predisposition, on the one hand, Toll-like receptors (TLRs) pathways were initiated by viral infection in the thymus with MG to generate chemokines and pro-inflammatory cytokines such as Type I interferon (IFN), which facilitate the thymus to function as a tertiary lymphoid organ (TLO). On the another hand, the antibodies against acetylcholine receptors (AChR) generated by thymus then activated the classical pathways on thymus and neuromuscular junction (NMJ). Futher, we also highlight the role of innate immune cells in the pathogenic response. Finally, we provide some future perspectives in developing new therapeutic approaches particularly targeting the innate immunity for MG.
Collapse
Affiliation(s)
- Rui Zhao
- Department of Neurology, Huashan hospital Fudan University, 200040 Shanghai, China
| | - Sushan Luo
- Department of Neurology, Huashan hospital Fudan University, 200040 Shanghai, China
| | - Chongbo Zhao
- Department of Neurology, Huashan hospital Fudan University, 200040 Shanghai, China.
| |
Collapse
|
6
|
Lee HW, Shin J, Wilson BS, Oh JW. Peripheral immune tolerance by prolactin-induced protein originated from human invariant natural killer T cells. Bioengineered 2021; 12:461-475. [PMID: 33509033 PMCID: PMC8806214 DOI: 10.1080/21655979.2021.1875664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
invariant natural killer T (iNKT) cells have been reported to regulate a diverse set of immunological responses. iNKT cell dysfunction in cytokine secretion is linked to the development of autoimmunity, an immune response against its own tissue. Interestingly, CD4+ iNKT cells preferentially secrete regulatory cytokines. Here we investigated what kind of secreting factors of it are involved in dendritic cell (DC) maturation to regulate immune responses. We found one of them, prolactin induced protein (PIP), from the supernatants of cultured CD4+ iNKT cells. It was validated using RT-quantitative real-time polymerase chain reaction (RT-qPCR) and western blot analysis. Subsequent analysis upon PIP treatment was performed using fluorescence-activated cell sorting (FACS) analysis. We identified PIP as one of strong candidates for inducing DC maturation, to similar level to lipopolysaccharide, an already known candidate molecule. Recombinant PIP recapitulated natural function, and induction of DC differentiation by both recombinant and purified PIP was blocked by anti-Toll-like receptor (TLR)2 antibody (Ab), but not by anti-TLR4/5 or anti-receptor Ab for advanced glycation end product Ab. Interestingly, PIP induced the differentiation of naïve T cells into CD4+ CD25+ Foxp3+ regulatory T cells and reduced the number of helper T (Th)1 and Th17 cells produced by Pam3CysSerLys4. Take in together, these results suggest that PIP is an important factor that mediates immunoregulation by iNKT cells through TLR2-mediated signaling.
Collapse
Affiliation(s)
- Hyeong-Woo Lee
- Department of Animal Science and Technology, Konkuk University , Seoul, Republic of Korea.,Speegenebio, Co., Ltd , Seongnam, Republic of Korea.,Department of Pathology, Immunology, and Laboratory Medicine, University of Florida , Gainesville, FL, USA
| | - Juhyun Shin
- Department of Stem Cell and Regenerative Biotechnology and Animal Resources Research Center, Konkuk University , Seoul, Republic of Korea
| | - Brian S Wilson
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida , Gainesville, FL, USA
| | - Jae-Wook Oh
- Department of Stem Cell and Regenerative Biotechnology and Animal Resources Research Center, Konkuk University , Seoul, Republic of Korea
| |
Collapse
|
7
|
Weng S, Fan Z, Qiu G, Liu F, Huang L, Li J, Jiang X, Song Z, Gao Y, Zhong Z, He L, Kang L, Wu Y, Chen B, Jiang Q. Therapeutic efficacy and immunoregulatory effect of Qiangji Jianli Capsule for patients with myasthenia gravis: Study protocol for a series of randomized, controlled N-of-1 trials. Medicine (Baltimore) 2020; 99:e23679. [PMID: 33371107 PMCID: PMC7748195 DOI: 10.1097/md.0000000000023679] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 11/13/2020] [Indexed: 02/06/2023] Open
Abstract
INTRODUCTION Myasthenia gravis (MG) is an autoimmune disease in which antibodies directly target components of the neuromuscular junction, causing neuromuscular conduction damage that leads to muscle weakness. The current pharmaceutical treatment for MG is still not ideal to address the problems of disease progression, high recurrence rate, and drug side effects. Clinical observations suggest that traditional Chinese medicine (TCM) can strengthen immunity and improve symptoms of MG patients, delay the progression of the disease, reduce or even prevent the need for immunosuppressive therapy when used in combination with acetylcholinesterase inhibitors or low-dose prednisone, as well as improve the quality of life of patients. The Qiangji Jianli Capsule (QJC) is a combination of medicinal herbs which is used in traditional Chinese medicine. Since MG is a rare disorder, randomized controlled trials comparing large cohorts are difficult to conduct. Therefore, we proposed to aggregate data from a small series of N-of-1 trials to assess the effect of the Chinese medical prescription QJC, which strengthens the spleen and nourishes Qi, as an add-on treatment for MG with spleen and stomach Qi deficiency syndrome. METHODS AND ANALYSIS Single-center, randomized, double-blind, multiple crossover N-of-1 studies will compare QJC versus placebo in 5 adult MG patients with spleen and stomach Qi deficiency syndrome. Patients will undergo 3 cycles of two 4-week intervention periods. According to the treatment schedule, patients will continue to be treated with pyridine bromide tablets, prednisone acetate, tablets and/or tacrolimus capsules throughout the entire trial. Each period consisting of 4-week oral add-on treatment with QJC will be compared with 4-week add-on treatment with a placebo. The primary endpoints are quantitative myasthenia gravis (QMG) test; measurement of the amount of Treg cells and cytokines such as interferon-γ (IFN-γ), interleukin-4 (IL-4), interleukin-17A (IL-17A), and transforming growth factor-β (TGF-β); and corticosteroid or immunosuppressive agent dosage. Secondary outcome measures: Clinical: Evaluation of the effect of TCM syndromes; MG-activities of daily living (MG-ADL) scales; adverse events. ETHICS AND DISSEMINATION This study was approved by The First Affiliated Hospital of Guangzhou University of Chinese Medicine (GZUCM), No. ZYYECK[2019]038. The results will be published in a peer-reviewed publication. Regulatory stakeholders will comment on the suitability of the trial for market authorization and reimbursement purposes. Trial registration: Chinese Clinical Trial Register, ID: ChiCTR2000033516. Registered on 3 June 2020, http://www.chictr.org.cn/showprojen.aspx?proj=54618.
Collapse
Affiliation(s)
- Senhui Weng
- Department of Spleen-Stomach, First Affiliated Hospital of Guangzhou University of Chinese Medicine
| | - Zhixin Fan
- Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Guoyu Qiu
- Department of Spleen-Stomach, First Affiliated Hospital of Guangzhou University of Chinese Medicine
| | - Fengbin Liu
- Department of Spleen-Stomach, First Affiliated Hospital of Guangzhou University of Chinese Medicine
| | - Linwen Huang
- Department of Spleen-Stomach, First Affiliated Hospital of Guangzhou University of Chinese Medicine
| | - Jinghao Li
- Department of Spleen-Stomach, First Affiliated Hospital of Guangzhou University of Chinese Medicine
| | - Xiaotao Jiang
- Department of Spleen-Stomach, First Affiliated Hospital of Guangzhou University of Chinese Medicine
| | - Zhixuan Song
- Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yuxia Gao
- Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhuotai Zhong
- Department of Spleen-Stomach, First Affiliated Hospital of Guangzhou University of Chinese Medicine
| | - Long He
- Department of Spleen-Stomach, First Affiliated Hospital of Guangzhou University of Chinese Medicine
| | - Liping Kang
- Department of Spleen-Stomach, First Affiliated Hospital of Guangzhou University of Chinese Medicine
| | - Yunlong Wu
- Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Benshu Chen
- Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Qilong Jiang
- Department of Spleen-Stomach, First Affiliated Hospital of Guangzhou University of Chinese Medicine
| |
Collapse
|
8
|
Feng X, Zhao C, Li L, Feng J, He W, Shi T, Li N, Jie Z, Su X. iNKT cells with high PLZF expression are recruited into the lung via CCL21-CCR7 signaling to facilitate the development of asthma tolerance in mice. Eur J Immunol 2020; 51:414-432. [PMID: 32712954 DOI: 10.1002/eji.202048798] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 06/29/2020] [Accepted: 07/23/2020] [Indexed: 01/10/2023]
Abstract
Establishment of immune tolerance is crucial to protect humans against asthma. Promyelocytic leukemia zinc finger (PLZF) is an emerging suppressor of inflammatory responses. CCL21-CCR7 signaling mediates tolerance development. However, whether PLZF and CCL21-CCR7 are required for the development of asthma tolerance is unknown. Here, we found that Zbtb16 (coding PLZF) and Ccl21 were upregulated in OVA-induced asthma tolerance (OT) lungs by RNA-seq. PLZF physically interacted with GATA3 and its expression was higher in GATA3+ Th2 cells and ILC2s in OT lungs. Zbtb16-knockdown in lymphocytes promoted the differentiation of CD3e+ CD4+ T cells, particularly those producing IL-4 and IL-5. Moreover, iNKT cells with high expression of PLZF were recruited into the lungs via draining lymph nodes during tolerance. Blockade of CCL21-CCR7 signaling in OT mice decreased the PLZF+ cell population, abolished CCR7-induced PLZF+ iNKT recruitment to the lungs, enhanced Th2responses and exacerbated lung pathology. In OT mice, respiratory syncytial virus (RSV) infection impeded PLZF+ cell and CCR7+ PLZF+ iNKT cellrecruitment to the lungs and increased airway resistance. Collectively, these results indicate that PLZF could interact with GATA3 and restrain differentiation of IL-4- and IL-5-producing T cells, iNKT cells with high PLZF expression are recruited to the lungs via CCL21-CCR7 signaling to facilitate the development of asthma tolerance.
Collapse
Affiliation(s)
- Xintong Feng
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China.,Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Caiqi Zhao
- Unit of Respiratory Infection and Immunity, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Ling Li
- Unit of Respiratory Infection and Immunity, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Jingjing Feng
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China.,Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Wei He
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China.,Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Tianyun Shi
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China.,Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Na Li
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China.,Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Zhijun Jie
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China.,Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Xiao Su
- Unit of Respiratory Infection and Immunity, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| |
Collapse
|
9
|
Zhang Y, Springfield R, Chen S, Li X, Feng X, Moshirian R, Yang R, Yuan W. α-GalCer and iNKT Cell-Based Cancer Immunotherapy: Realizing the Therapeutic Potentials. Front Immunol 2019; 10:1126. [PMID: 31244823 PMCID: PMC6562299 DOI: 10.3389/fimmu.2019.01126] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 05/03/2019] [Indexed: 01/15/2023] Open
Abstract
NKT cells are CD1d-restricted innate-like T cells expressing both T cell receptor and NK cell markers. The major group of NKT cells in both human and mice is the invariant NKT (iNKT) cells and the best-known function of iNKT cells is their potent anti-tumor function in mice. Since its discovery 25 years ago, the prototype ligand of iNKT cells, α-galactosylceramide (α-GalCer) has been used in over 30 anti-tumor clinical trials with mostly suboptimal outcomes. To realize its therapeutic potential, numerous preclinical models have been developed to optimize the scheme and strategies for α-GalCer-based cancer immunotherapies. Nevertheless, since there is no standard protocol for α-GalCer delivery, we reviewed the preclinical studies with a focus on B16 melanoma model in the goal of identifying the best treatment schemes for α-GalCer treatment. We then reviewed the current progress in developing more clinically relevant mouse models for these preclinical studies, most notably the generation of new mouse models with a humanized CD1d/iNKT cell system. With ever-emerging novel iNKT cell ligands, invention of novel α-GalCer delivery strategies and significantly improved preclinical models for optimizing these new strategies, one can be hopeful that the full potential of anti-tumor potential for α-GalCer will be realized in the not too distant future.
Collapse
Affiliation(s)
- Yingting Zhang
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Ryan Springfield
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Siyang Chen
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Xin Li
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Xiaotian Feng
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Rosa Moshirian
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Rirong Yang
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Weiming Yuan
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| |
Collapse
|
10
|
Abstract
Natural killer T (NKT) cells are a unique subset of T lymphocytes with the expression of T cell receptor (TCR) and NK cell lineage receptors. These cells can rapidly release large quantities of cytokines and function as a bridge between innate and adaptive immunity. To date, multiple reports have investigated the role of NKT cells under various pathological conditions, such as cancer, autoimmune disease, and infection. Knowledge about NKT cells in neurological diseases is increasing, albeit limited. Here, we review evidence for the involvement of NKT cells in neurological diseases, and discuss immunotherapeutic potential and future study goals. As the development and function of NKT cells become increasingly well understood, the next few years should yield many new insights into NKT cell function, and mechanistic regulation in neurological disorders.
Collapse
Affiliation(s)
- Yu Cui
- Institute of Neuroregeneration and Neurorehabilitation, Qingdao University, Qingdao, China
| | - Qi Wan
- Institute of Neuroregeneration and Neurorehabilitation, Qingdao University, Qingdao, China
| |
Collapse
|
11
|
Chen Q, Guo X, Deng N, Liu L, Chen S, Wang A, Li R, Huang Y, Ding X, Yu H, Hu S, Nie H. α-Galactosylceramide treatment before allergen sensitization promotes iNKT cell-mediated induction of Treg cells, preventing Th2 cell responses in murine asthma. J Biol Chem 2019; 294:5438-5455. [PMID: 30745361 DOI: 10.1074/jbc.ra118.005418] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 01/18/2019] [Indexed: 12/31/2022] Open
Abstract
Asthma is a common inflammatory pulmonary disorder involving a diverse array of immune cells such as proinflammatory T helper 2 (Th2) cells. We recently reported that intraperitoneal injection of α-galactosylceramide (α-GalCer) can stimulate the lung invariant natural killer T (iNKT) cells and does not lead to airway inflammation in WT mice. Other studies indicate that iNKT cells play an important role in inducing regulatory T cells (Treg cells) and peripheral tolerance. Using iNKT cell- knockout mice, functional inactivation of Treg cells, and co-culture experiments in murine asthma models, we investigated the immunoregulatory effects of α-GalCer treatment before allergen sensitization on Th2 cell responses. We also studied whether α-GalCer's effects require lung Treg cells induced by activated iNKT cells. Our results disclosed that intraperitoneal administration of α-GalCer before allergen sensitization could promote the expansion and suppressive activity of lung CD4+FoxP3+ Treg cells. These effects were accompanied by down-regulated Th2 cell responses and decreased immunogenic maturation of lung dendritic cells in WT mice. However, these changes were absent in CD1d-/- mice immunized and challenged with ovalbumin or house dust mites, indicating that the effects of α-GalCer on Treg cells mainly require iNKT cells. Moreover, functional inactivation of Treg cells could reverse the inhibitory ability of this α-GalCer therapy on Th2 cell responses in a murine asthma model. Our findings indicate that intraperitoneal administration of α-GalCer before the development of asthma symptoms induces the generation of lung Treg cells via iNKT cells and may provide a potential therapeutic strategy to prevent allergic asthma.
Collapse
Affiliation(s)
- Qianhui Chen
- From the Department of Respiratory and Critical Medicine, Renmin Hospital of Wuhan University, Wuhan 430060 and
| | - Xuxue Guo
- From the Department of Respiratory and Critical Medicine, Renmin Hospital of Wuhan University, Wuhan 430060 and
| | - Nishan Deng
- From the Department of Respiratory and Critical Medicine, Renmin Hospital of Wuhan University, Wuhan 430060 and
| | - Linlin Liu
- From the Department of Respiratory and Critical Medicine, Renmin Hospital of Wuhan University, Wuhan 430060 and
| | - Shuo Chen
- From the Department of Respiratory and Critical Medicine, Renmin Hospital of Wuhan University, Wuhan 430060 and
| | - Ailing Wang
- the Nursing Department, Wuhan University School of Health Sciences, Wuhan 430060, China
| | - Ruiyun Li
- From the Department of Respiratory and Critical Medicine, Renmin Hospital of Wuhan University, Wuhan 430060 and
| | - Yi Huang
- From the Department of Respiratory and Critical Medicine, Renmin Hospital of Wuhan University, Wuhan 430060 and
| | - Xuhong Ding
- From the Department of Respiratory and Critical Medicine, Renmin Hospital of Wuhan University, Wuhan 430060 and
| | - Hongying Yu
- From the Department of Respiratory and Critical Medicine, Renmin Hospital of Wuhan University, Wuhan 430060 and
| | - Suping Hu
- From the Department of Respiratory and Critical Medicine, Renmin Hospital of Wuhan University, Wuhan 430060 and
| | - Hanxiang Nie
- From the Department of Respiratory and Critical Medicine, Renmin Hospital of Wuhan University, Wuhan 430060 and
| |
Collapse
|
12
|
Chen Q, Guo X, Deng N, Liu L, Chen S, Wang A, Li R, Huang Y, Ding X, Yu H, Hu S, Nie H. α-galactosylceramide generates lung regulatory T cells through the activated natural killer T cells in mice. J Cell Mol Med 2018; 23:1072-1085. [PMID: 30421497 PMCID: PMC6349240 DOI: 10.1111/jcmm.14008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 10/13/2018] [Accepted: 10/15/2018] [Indexed: 12/20/2022] Open
Abstract
Our previous study showed that intraperitoneal injection of α-galactosylceramide (α-GalCer) has the ability to activate lung iNKT cells, but α-GalCer-activated iNKT cells do not result in airway inflammation in wild-type (WT) mice. Many studies showed that iNKT cells had the capacity to induce Treg cells, which gave rise to peripheral tolerance. Therefore, we examined the influence of intraperitoneal administration of α-GalCer on the expansion and suppressive activity of lung Treg cells using iNKT cell-knockout mice and co-culture experiments in vitro. We also compared airway inflammation and airway hyperresponsiveness (AHR) after α-GalCer administration in specific anti-CD25 mAb-treated mice. Our data showed that intraperitoneal injection of α-GalCer could promote the expansion of lung Treg cells in WT mice, but not in iNKT cell-knockout mice. However, α-GalCer administration could not boost suppressive activity of Treg cells in WT mice and iNKT cell-knockout mice. Interestingly, functional inactivation of Treg cells could induce airway inflammation and AHR in WT mice treated with α-GalCer. Furthermore, α-GalCer administration could enhance iNKT cells to secrete IL-2, and neutralization of IL-2 reduced the expansion of Treg cells in vivo and in vitro. Thus, intraperitoneal administration of α-GalCer can induce the generation of lung Treg cells in mice through the release of IL-2 by the activated iNKT cells.
Collapse
Affiliation(s)
- Qianhui Chen
- Department of Respiratory Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xuxue Guo
- Department of Respiratory Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Nishan Deng
- Department of Respiratory Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Linlin Liu
- Department of Respiratory Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Shuo Chen
- Department of Respiratory Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Ailing Wang
- Nursing Department, Wuhan University School of Health Sciences, Wuhan, China
| | - Ruiyun Li
- Department of Respiratory Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yi Huang
- Department of Respiratory Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xuhong Ding
- Department of Respiratory Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Hongying Yu
- Department of Respiratory Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Suping Hu
- Department of Respiratory Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Hanxiang Nie
- Department of Respiratory Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| |
Collapse
|
13
|
Terabe M, Berzofsky JA. Tissue-Specific Roles of NKT Cells in Tumor Immunity. Front Immunol 2018; 9:1838. [PMID: 30158927 PMCID: PMC6104122 DOI: 10.3389/fimmu.2018.01838] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 07/25/2018] [Indexed: 01/07/2023] Open
Abstract
NKT cells are an unusual population of T cells recognizing lipids presented by CD1d, a non-classical class-I-like molecule, rather than peptides presented by conventional MHC molecules. Type I NKT cells use a semi-invariant T cell receptor and almost all recognize a common prototype lipid, α-galactosylceramide (α-GalCer). Type II NKT cells are any lipid-specific CD1d-restricted T cells that use other receptors and generally don't recognize α-GalCer. They play important regulatory roles in immunity, including tumor immunity. In contrast to type I NKT cells that most have found to promote antitumor immunity, type II NKT cells suppress tumor immunity and the two subsets cross-regulate each other, forming an immunoregulatory axis. They also can promote other regulatory cells including regulatory T cells (Tregs) and myeloid-derived suppressor cells (MDSCs), and can induce MDSCs to secrete TGF-β, one of the most immunosuppressive cytokines known. In some tumors, both Tregs and type II NKT cells can suppress immunosurveillance, and the balance between these is determined by a type I NKT cell. We have also seen that regulation of tumor immunity can depend on the tissue microenvironment, so the same tumor in the same animal in different tissues may be regulated by different cells, such as type II NKT cells in the lung vs Tregs in the skin. Also, the effector T cells that protect those sites when Tregs are removed do not always act between tissues even in the same animal. Thus, metastases may require different immunotherapy from primary tumors. Newly improved sulfatide-CD1d tetramers are starting to allow better characterization of the elusive type II NKT cells to better understand their function and control it to overcome immunosuppression.
Collapse
Affiliation(s)
- Masaki Terabe
- Vaccine Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Jay A Berzofsky
- Vaccine Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| |
Collapse
|
14
|
Van Kaer L, Wu L. Therapeutic Potential of Invariant Natural Killer T Cells in Autoimmunity. Front Immunol 2018; 9:519. [PMID: 29593743 PMCID: PMC5859017 DOI: 10.3389/fimmu.2018.00519] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 02/28/2018] [Indexed: 11/13/2022] Open
Abstract
Tolerance against self-antigens is regulated by a variety of cell types with immunoregulatory properties, such as CD1d-restricted invariant natural killer T (iNKT) cells. In many experimental models of autoimmunity, iNKT cells promote self-tolerance and protect against autoimmunity. These findings are supported by studies with patients suffering from autoimmune diseases. Based on these studies, the therapeutic potential of iNKT cells in autoimmunity has been explored. Many of these studies have been performed with the potent iNKT cell agonist KRN7000 or its structural variants. These findings have generated promising results in several autoimmune diseases, although mechanisms by which iNKT cells modulate autoimmunity remain incompletely understood. Here, we will review these preclinical studies and discuss the prospects for translating their findings to patients suffering from autoimmune diseases.
Collapse
Affiliation(s)
- Luc Van Kaer
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Lan Wu
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, United States
| |
Collapse
|
15
|
Yu Y, Cao F, Ran Q, Sun X. Regulatory T cells exhibit neuroprotective effect in a mouse model of traumatic brain injury. Mol Med Rep 2016; 14:5556-5566. [PMID: 27878274 PMCID: PMC5355672 DOI: 10.3892/mmr.2016.5954] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 11/14/2016] [Indexed: 12/15/2022] Open
Abstract
Traumatic brain injury (TBI) is a major health and socioeconomic problem as it is associated with high rates of mortality and morbidity worldwide. Regulatory T cells (Tregs) have been reported to reduce inflammatory response in several diseases, including myasthenia gravis, viral myocarditis and cerebral infarction. The present study investigated the role of Tregs in mediating neuro‑protective effects in a mouse model of TBI. Initially, Treg levels were determined, and compared between the controlled cortical impact (CCI) model for moderate TBI and the sham group, by using flow cytometry and ELISA. Afterwards, the number of Tregs was upregulated (by injection) and downregulated (by depletion), respectively, to elucidate the effect of Tregs in the presence of an inflammatory reaction and a deficient neurological function and consequently, in the prognosis of TBI in the mouse. The expression of pro‑inflammatory cytokines [tumor necrosis factor (TNF)‑α, interleukin (IL)‑1β, IL‑6)] and anti‑inflammatory cytokines [IL‑10, transforming growth factor (TGF)‑β] in blood and brain tissues was also measured in the five groups: Μice receiving a saline injection, mice experiencing Treg depletion, small‑dose (SD Tregs, 1.25x105), and mice receiving different doses of Tregs: Moderate‑dose (MD Tregs, 2.5x105) and large‑dose (LD Tregs, 5x105), using ELISA and PCR. Co‑cultures of Tregs and microglia were performed to evaluate the expression of pro‑inflammatory cytokines and observe the interaction between the two types of cells. The regulation patterns in JNK‑NF‑κB pathway by Tregs were also evaluated by western blot analysis. Treg levels were significantly reduced in TBI mouse group on the 3rd day after TBI (P<0.05). In the mouse model of TBI, the expression of pro‑inflammatory cytokines (TNF‑α, IL‑1β, IL‑6) was enhanced, while the expression of anti‑inflammatory cytokines (IL‑10, TGF‑β) was reduced (P<0.05). Tregs exhibited a suppressive effect on inflammatory reactions. In the MD group, the activation of microglia cells was markedly inhibited, compared to the activation in SD and LD groups. The expression of ERK1/2, JNK1/2/3 and NK‑κB was significantly downregulated in the MD group. The results indicated that Tregs exhibited significant neuro‑protective effects, suppressing pro‑inflammatory responses and promoting tissue repair after TBI injury in the mouse, specifically by deactivating the JNK‑NF‑κB pathway. The results of the study show that Tregs potentially participates in neuro‑therapeutic approaches for TBI.
Collapse
Affiliation(s)
- Yunhu Yu
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Fang Cao
- Department of Cerebrovascular Disease, The First Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou 563000, P.R. China
| | - Qishan Ran
- Department of Neurosurgery, The Third Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou 563000, P.R. China
| | - Xiaochuan Sun
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| |
Collapse
|
16
|
Lee HW, Jie HB, Bollyky PL, Sarracino D, Kim TS, Wilson BS. Role of dendritic cell maturation factors produced by human invariant NKT cells in immune tolerance. J Leukoc Biol 2016; 101:989-1003. [PMID: 27837018 DOI: 10.1189/jlb.1a0416-164rrr] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Revised: 10/04/2016] [Accepted: 10/27/2016] [Indexed: 01/12/2023] Open
Abstract
In this study, we used the culture supernatant of iNKT cells to identify human myeloid DC maturation factors produced by human CD4+ iNKT cells. S100A8 had a strong maturation effect. Notably, the recombinant S100A8 protein displayed properties of DC maturation functioning, and the induction of DC differentiation by both the purified and the recombinant protein were blocked by anti-S100A8 and anti-TLR-4 mAbs. DC differentiation induced by anti-major histocompatibility complex class II/CD1d Ab, S100A8, or both was qualitatively indistinguishable from that induced by the coculture of DCs and iNKT cells or via culture supplementation with supernatants from activated CD4+ iNKT cells. S100A8 also induced CD4+/CD25+/Foxp3+ Treg cells from naïve T cells. S100A8 may contribute to DC differentiation by elevating transcription factors or activating transcription factor-2, heat shock factor-1, or both, in mature DCs. S100A8 is a novel candidate iNKT cell-dependent DC maturation factor.
Collapse
Affiliation(s)
- Hyeong-Woo Lee
- Departments of Tropical Medicine and Parasitology, Inha University School of Medicine, Incheon, Republic of Korea.,Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, Florida
| | - Hyun Bae Jie
- OncoMed Pharmaceuticals, Inc., Redwood City, California
| | - Paul L Bollyky
- Division of Infectious Diseases, Stanford University Medical Center, Stanford, California; and
| | - David Sarracino
- Thermo Fisher Scientific Biomarkers Research Initiatives in Mass Spectrometry (BRIMS) Center, Cambridge, Massachusetts
| | - Tong-Soo Kim
- Departments of Tropical Medicine and Parasitology, Inha University School of Medicine, Incheon, Republic of Korea;
| | - Brian S Wilson
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, Florida;
| |
Collapse
|
17
|
Wang S, Li H, Zhang M, Yue LT, Wang CC, Zhang P, Liu Y, Duan RS. Curcumin ameliorates experimental autoimmune myasthenia gravis by diverse immune cells. Neurosci Lett 2016; 626:25-34. [PMID: 27181511 DOI: 10.1016/j.neulet.2016.05.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 05/05/2016] [Accepted: 05/11/2016] [Indexed: 01/31/2023]
Abstract
Curcumin is a traditional Asian medicine with diverse immunomodulatory properties used therapeutically in the treatment of many autoimmune diseases. However, the effects of curcumin on myasthenia gravis (MG) remain undefined. Here we investigated the effects and potential mechanisms of curcumin in experimental autoimmune myasthenia gravis (EAMG). Our results demonstrated that curcumin ameliorated the clinical scores of EAMG, suppressed the expression of T cell co-stimulatory molecules (CD80 and CD86) and MHC class II, down-regulated the levels of pro-inflammatory cytokines (IL-17, IFN-γ and TNF-α) and up-regulated the levels of the anti-inflammatory cytokine IL-10, shifted the balance from Th1/Th17 toward Th2/Treg, and increased the numbers of NKR-P1(+) cells (natural killer cell receptor protein 1 positive cells, including NK and NKT cells). Moreover, the administration of curcumin promoted the differentiation of B cells into a subset of B10 cells, increased the anti-R97-166 peptide IgG1 levels and decreased the relative affinity indexes of anti-R97-116 peptide IgG. In summary, curcumin effectively ameliorate EAMG, indicating that curcumin may be a potential candidate therapeutic agent for MG.
Collapse
Affiliation(s)
- Shan Wang
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, PR China
| | - Heng Li
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, PR China
| | - Min Zhang
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, PR China
| | - Long-Tao Yue
- Central Laboratory, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, PR China
| | - Cong-Cong Wang
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, PR China
| | - Peng Zhang
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, PR China
| | - Ying Liu
- Electromyography Department, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, PR China
| | - Rui-Sheng Duan
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, PR China.
| |
Collapse
|
18
|
Preclinical models of acute and chronic graft-versus-host disease: how predictive are they for a successful clinical translation? Blood 2016; 127:3117-26. [PMID: 26994149 DOI: 10.1182/blood-2016-02-699082] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 03/15/2016] [Indexed: 02/07/2023] Open
Abstract
Despite major advances in recent years, graft-versus-host disease (GVHD) remains a major life-threatening complication of allogeneic hematopoietic cell transplantation (allo-HCT). To improve our therapeutic armory against GVHD, preclinical evidence is most frequently generated in mouse and large animal models of GVHD. However, because every model has shortcomings, it is important to understand how predictive the different models are and why certain findings in these models could not be translated into the clinic. Weaknesses of the animal GVHD models include the irradiation only-based conditioning regimen, the homogenous donor/recipient genetics in mice, canine or non-human primates (NHP), anatomic site of T cells used for transfer in mice, the homogenous microbial environment in mice housed under specific pathogen-free conditions, and the lack of pharmacologic GVHD prevention in control groups. Despite these major differences toward clinical allo-HCT, findings generated in animal models of GVHD have led to the current gold standards for GVHD prophylaxis and therapy. The homogenous nature of the preclinical models allows for reproducibility, which is key for the characterization of the role of a new cytokine, chemokine, transcription factor, microRNA, kinase, or immune cell population in the context of GVHD. Therefore, when carefully balancing reasons to apply small and large animal models, it becomes evident that they are valuable tools to generate preclinical hypotheses, which then have to be rigorously evaluated in the clinical setting. In this study, we discuss several clinical approaches that were motivated by preclinical evidence, novel NHP models and their advantages, and highlight the recent advances in understanding the pathophysiology of GVHD.
Collapse
|
19
|
Huang S, Wang W, Chi L. Feasibility of up-regulating CD4(+)CD25(+) Tregs by IFN-γ in myasthenia gravis patients. BMC Neurol 2015; 15:163. [PMID: 26347149 PMCID: PMC4562356 DOI: 10.1186/s12883-015-0419-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Accepted: 09/01/2015] [Indexed: 03/06/2023] Open
Abstract
Background In myasthenia gravis (MG) patients, the dysfunction of CD4+CD25+ regulatory T cells (CD4+CD25+ Tregs) may be one of the important pathogenesis of MG. Currently, the role of IFN-γ in autoimmune diseases is still controversial and needs further exploration. In this study, whether IFN-γ can induce CD4+CD25− T cells into CD4+CD25+ Tregs in MG in vitro was investigated systematically. Methods Flow cytometry was used to analyze the number of CD4+CD25+ Tregs in MG patients and healthy controls (HCs). CD4+CD25− T cells were separated from the peripheral blood mononuclear cells of MG patients and HCs, and the CD4+CD25+ Tregs were separated from HCs by Magnetic cell sorting (MACS). IFN-γ with different concentrations was used to stimulate CD4+CD25− T cells. The percentages of the induced CD4+CD25+ T cells were detected by flow cytometry. The FoxP3 expression of the induced CD4+CD25+ T cells in MG patients was detected by real-time PCR at mRNA level. The induced CD4+CD25+ T cells were co-cultured with autologous CD4+CD25− T cells to estimate the suppressive ability of the induced CD4+CD25+ T cells to CD4+CD25− T cells. Results It shows the percentages of CD4+CD25+ T cells among CD4+ T cells have no significant difference in MG patients compared with those in HCs. There is also merely no difference in the percentages of CD4+CD25+ T cells between thymectomized and non-thymectomized MG patients. CD4+CD25− T cells can be induced to CD4+CD25+ T cells after applying IFN-γ in MG patients and HCs. The proportion and FoxP3 expression of the induced CD4+CD25+ T cells are the highest at the level of 40 ng/ml IFN-γ, and the suppressive function of the CD4+CD25+ T cells induced by 40 ng/ml IFN-γ is the strongest in MG patients. Conclusions This subject will further reveal the role of IFN-γ in the pathogenesis of MG from a new perspective. It will also provide the scientific basis for the clinical targeted therapy of MG.
Collapse
Affiliation(s)
- Shuo Huang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150080, P.R. China.
| | - Weizhi Wang
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, P.R. China.
| | - Lijun Chi
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150080, P.R. China.
| |
Collapse
|
20
|
Van Kaer L, Wu L, Parekh VV. Natural killer T cells in multiple sclerosis and its animal model, experimental autoimmune encephalomyelitis. Immunology 2015; 146:1-10. [PMID: 26032048 DOI: 10.1111/imm.12485] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 05/18/2015] [Accepted: 05/27/2015] [Indexed: 12/30/2022] Open
Abstract
Multiple sclerosis (MS) is a chronic inflammatory disease that causes demyelination of neurons in the central nervous system. Traditional therapies for MS have involved anti-inflammatory and immunosuppressive drugs with significant side effects that often only provide short-term relief. A more desirable outcome of immunotherapy would be to protect against disease before its clinical manifestation or to halt disease after its initiation. One attractive approach to accomplish this goal would be to restore tolerance by targeting immunoregulatory cell networks. Although much of the work in this area has focused on CD4(+) Foxp3(+) regulatory T cells, other studies have investigated natural killer T (NKT) cells, a subset of T cells that recognizes glycolipid antigens in the context of the CD1d glycoprotein. Studies with human MS patients have revealed alterations in the numbers and functions of NKT cells, which have been partially supported by studies with the experimental autoimmune encephalomyelitis model of MS. Additional studies have shown that activation of NKT cells with synthetic lipid antigens can, at least under certain experimental conditions, protect mice against the development of MS-like disease. Although mechanisms of this protection remain to be fully investigated, current evidence suggests that it involves interactions with other immunoregulatory cell types such as regulatory T cells and immunosuppressive myeloid cells. These studies have provided a strong foundation for the rational design of NKT-cell-based immunotherapies for MS that induce tolerance while sparing overall immune function. Nevertheless, additional pre-clinical and clinical studies will be required to bring this goal to fruition.
Collapse
Affiliation(s)
- Luc Van Kaer
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Lan Wu
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Vrajesh V Parekh
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, USA
| |
Collapse
|
21
|
Yao X, Kong Q, Xie X, Wang J, Li N, Liu Y, Sun B, Li Y, Wang G, Li W, Qu S, Zhao H, Wang D, Liu X, Zhang Y, Mu L, Li H. Neutralization of interleukin-9 ameliorates symptoms of experimental autoimmune myasthenia gravis in rats by decreasing effector T cells and altering humoral responses. Immunology 2014; 143:396-405. [PMID: 24850614 DOI: 10.1111/imm.12322] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Revised: 05/01/2014] [Accepted: 05/08/2014] [Indexed: 12/21/2022] Open
Abstract
Interleukin-9 (IL-9) was initially thought to be a type 2 T helper (Th2)-associated cytokine involved in the regulation of autoimmune responses by affecting multiple cell types. However, it was recently shown that IL-9-producing CD4+ T cells represent a discrete subset of Th cells, designated Th9 cells. Although Th9 cells have been shown to be important in many diseases, their roles in myasthenia gravis (MG) are unclear. The aim of this study was to determine whether IL-9 and Th9 cells promote the progression of experimental autoimmune myasthenia gravis (EAMG). The results showed that the percentage of Th9 cells changed during the progression of EAMG, accompanied by an up-regulation of IL-9. Blocking IL-9 activity with antibodies against IL-9 inhibited EAMG-associated pathology in rats and reduced serum anti-acetylcholine receptor IgG levels. Neutralization of IL-9 altered the Th subset distribution in EAMG, reducing the number of Th1 cells and increasing the number of regulatory T cells. Administration of an anti-IL-9 antibody may represent an effective therapeutic strategy for MG-associated pathologies or other T-cell- or B-cell-mediated autoimmune diseases.
Collapse
Affiliation(s)
- Xiuhua Yao
- Department of Neurobiology, Provincial Key Laboratory of Neurobiology, Harbin Medical University, Heilongjiang, China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Kumar V, Delovitch TL. Different subsets of natural killer T cells may vary in their roles in health and disease. Immunology 2014; 142:321-36. [PMID: 24428389 DOI: 10.1111/imm.12247] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Revised: 01/08/2014] [Accepted: 01/08/2014] [Indexed: 12/31/2022] Open
Abstract
Natural killer T cells (NKT) can regulate innate and adaptive immune responses. Type I and type II NKT cell subsets recognize different lipid antigens presented by CD1d, an MHC class-I-like molecule. Most type I NKT cells express a semi-invariant T-cell receptor (TCR), but a major subset of type II NKT cells reactive to a self antigen sulphatide use an oligoclonal TCR. Whereas TCR-α dominates CD1d-lipid recognition by type I NKT cells, TCR-α and TCR-β contribute equally to CD1d-lipid recognition by type II NKT cells. These variable modes of NKT cell recognition of lipid-CD1d complexes activate a host of cytokine-dependent responses that can either exacerbate or protect from disease. Recent studies of chronic inflammatory and autoimmune diseases have led to a hypothesis that: (i) although type I NKT cells can promote pathogenic and regulatory responses, they are more frequently pathogenic, and (ii) type II NKT cells are predominantly inhibitory and protective from such responses and diseases. This review focuses on a further test of this hypothesis by the use of recently developed techniques, intravital imaging and mass cytometry, to analyse the molecular and cellular dynamics of type I and type II NKT cell antigen-presenting cell motility, interaction, activation and immunoregulation that promote immune responses leading to health versus disease outcomes.
Collapse
Affiliation(s)
- Vipin Kumar
- Laboratory of Autoimmunity, Torrey Pines Institute for Molecular Studies, San Diego, CA, USA
| | | |
Collapse
|
23
|
Fuchs S, Aricha R, Reuveni D, Souroujon MC. Experimental Autoimmune Myasthenia Gravis (EAMG): from immunochemical characterization to therapeutic approaches. J Autoimmun 2014; 54:51-9. [PMID: 24970384 DOI: 10.1016/j.jaut.2014.06.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Accepted: 06/04/2014] [Indexed: 12/22/2022]
Abstract
Myasthenia Gravis (MG) is an organ-specific autoimmune disease. In high percentage of patients there are autoantibodies to the nicotinic acetylcholine receptor (AChR) that attack AChR on muscle cells at the neuromuscular junction, resulting in muscle weakness. Experimental Autoimmune Myasthenia Gravis (EAMG) is an experimental model disease for MG. EAMG is induced in several animal species by immunization with acetylcholine receptor (AChR), usually isolated from the electric organ of electric fish, which is a rich source for this antigen. Our lab has been involved for several decades in research of AChR and of EAMG. The availability of an experimental autoimmune disease that mimics in many aspects the human disease, provides an excellent model system for elucidating the immunological nature and origin of MG, for studying various existing treatment modalities and for attempting the development of novel treatment approaches. In this review in honor of Michael Sela and Ruth Arnon, we report first on our early pioneering contributions to research on EAMG. These include the induction of EAMG in several animal species, early attempts for antigen-specific treatment for EAMG, elicitation and characterization of monoclonal antibodies and anti-idiotypic antibodies, measuring humoral and cellular AChR-specific immune responses in MG patient and more. In the second part of the review we discuss more recent studies from our lab towards developing and testing novel treatment approaches for myasthenia. These include antigen-dependent treatments aimed at specifically abrogating the humoral and cellular anti-AChR responses, as well as immunomodulatory approaches that could be used either alone, or in conjunction with antigen-specific treatments, or alternatively, serve as steroid-sparing agents.
Collapse
Affiliation(s)
- Sara Fuchs
- Department of Immunology, The Weizmann Institute of Science, Rehovot 76100, Israel.
| | - Revital Aricha
- Department of Immunology, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Debby Reuveni
- Department of Immunology, The Weizmann Institute of Science, Rehovot 76100, Israel; Department of Natural Sciences, The Open University of Israel, Raanana, Israel
| | - Miriam C Souroujon
- Department of Immunology, The Weizmann Institute of Science, Rehovot 76100, Israel; Department of Natural Sciences, The Open University of Israel, Raanana, Israel
| |
Collapse
|
24
|
Van Kaer L. Role of invariant natural killer T cells in immune regulation and as potential therapeutic targets in autoimmune disease. Expert Rev Clin Immunol 2014; 2:745-57. [DOI: 10.1586/1744666x.2.5.745] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
25
|
Terabe M, Berzofsky JA. The immunoregulatory role of type I and type II NKT cells in cancer and other diseases. Cancer Immunol Immunother 2014; 63:199-213. [PMID: 24384834 DOI: 10.1007/s00262-013-1509-4] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Accepted: 12/08/2013] [Indexed: 12/26/2022]
Abstract
NKT cells are CD1d-restricted T cells that recognize lipid antigens. They also have been shown to play critical roles in the regulation of immune responses. In the immune responses against tumors, two subsets of NKT cells, type I and type II, play opposing roles and cross-regulate each other. As members of both the innate and adaptive immune systems, which form a network of multiple components, they also interact with other immune components. Here, we discuss the function of NKT cells in tumor immunity and their interaction with other regulatory cells, especially CD4(+)CD25(+)Foxp3(+) regulatory T cells.
Collapse
Affiliation(s)
- Masaki Terabe
- Vaccine Branch, Center for Cancer Research, National Cancer Institute, NIH, Building 41-Room D702, 41 Medlars Drive, Bethesda, MD, 20892, USA,
| | | |
Collapse
|
26
|
Venken K, Decruy T, Aspeslagh S, Van Calenbergh S, Lambrecht BN, Elewaut D. Bacterial CD1d-restricted glycolipids induce IL-10 production by human regulatory T cells upon cross-talk with invariant NKT cells. THE JOURNAL OF IMMUNOLOGY 2013; 191:2174-83. [PMID: 23898038 DOI: 10.4049/jimmunol.1300562] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Invariant NKT (iNKT) cells and CD4(+)CD25(+)FOXP3(+) regulatory T cells (Tregs) are important immune regulatory T cells with Ag reactivity to glycolipids and peptides, respectively. However, the functional interplay between these cells in humans is poorly understood. We show that Tregs suppress iNKT cell proliferation induced by CD1d-restricted glycolipids, including bacterial-derived diacylglycerols, as well as by innate-like activation. Inhibition was related to the potency of iNKT agonists, making diacylglycerol iNKT responses very prone to suppression. Cytokine production by iNKT cells was differentially modulated by Tregs because IL-4 production was reduced more profoundly compared with IFN-γ. A compelling observation was the significant production of IL-10 by Tregs after cell contact with iNKT cells, in particular in the presence of bacterial diacylglycerols. These iNKT-primed Tregs showed increased FOXP3 expression and superior suppressive function. Suppression of iNKT cell responses, but not conventional T cell responses, was IL-10 dependent, suggesting that there is a clear difference in mechanism between the Treg-mediated inhibition of these cell types. Our data highlight a physiologically relevant interaction between human iNKT and Tregs upon pathogen-derived glycolipid recognition that has a significant impact on the design of iNKT cell-based therapeutics.
Collapse
Affiliation(s)
- Koen Venken
- Laboratory for Molecular Immunology and Inflammation, Department of Rheumatology, Faculty of Medicine and Health Sciences, Ghent University, 9000 Ghent, Belgium
| | | | | | | | | | | |
Collapse
|
27
|
Vaishnav RA, Liu R, Chapman J, Roberts AM, Ye H, Rebolledo-Mendez JD, Tabira T, Fitzpatrick AH, Achiron A, Running MP, Friedland RP. Aquaporin 4 molecular mimicry and implications for neuromyelitis optica. J Neuroimmunol 2013; 260:92-8. [PMID: 23664693 PMCID: PMC3682654 DOI: 10.1016/j.jneuroim.2013.04.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Revised: 04/10/2013] [Accepted: 04/11/2013] [Indexed: 12/31/2022]
Abstract
Neuromyelitis optica (NMO) is associated with antibodies to aquaporin 4 (AQP4). We hypothesized that antibodies to AQP4 can be triggered by exposure to environmental proteins. We compared human AQP4 to plant and bacterial proteins to investigate the occurrence of significantly similar structures and sequences. High similarity to a known epitope for NMO-IgG, AQP4(207-232), was observed for corn ZmTIP4-1. NMO and non-NMO sera were assessed for reactivity to AQP4(207-232) and the corn peptide. NMO patient serum showed reactivity to both peptides as well as to plant tissue. These findings warrant further investigation into the role of the environment in NMO etiology.
Collapse
Affiliation(s)
- Radhika A. Vaishnav
- Department of Neurology, University of Louisville, KY, USA
- Department of Physiology and Biophysics, University of Louisville, KY, USA
| | - Ruolan Liu
- Department of Neurology, University of Louisville, KY, USA
| | - Joab Chapman
- Department of Neurology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Israel
| | - Andrew M. Roberts
- Department of Physiology and Biophysics, University of Louisville, KY, USA
| | - Hong Ye
- Department of Pharmacology, University of Louisville, KY, USA
| | | | - Takeshi Tabira
- Department of Diagnosis, Prevention, and Treatment of Dementia, Graduate School of Juntendo University, Tokyo, Japan
| | | | - Anat Achiron
- Department of Neurology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Israel
| | | | - Robert P. Friedland
- Department of Neurology, University of Louisville, KY, USA
- Department of Biochemistry, University of Louisville, KY, USA
| |
Collapse
|
28
|
Liu R, Vaishnav RA, Roberts AM, Friedland RP. Humans have antibodies against a plant virus: evidence from tobacco mosaic virus. PLoS One 2013; 8:e60621. [PMID: 23573274 PMCID: PMC3615994 DOI: 10.1371/journal.pone.0060621] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Accepted: 02/28/2013] [Indexed: 01/25/2023] Open
Abstract
Tobacco mosaic virus (TMV), a widespread plant pathogen, is found in tobacco (including cigarettes and smokeless tobacco) as well as in many other plants. Plant viruses do not replicate or cause infection in humans or other mammals. This study was done to determine whether exposure to tobacco products induces an immune response to TMV in humans. Using a sandwich ELISA assay, we detected serum anti-TMV antibodies (IgG, IgG1, IgG3, IgG4, IgA, and IgM) in all subjects enrolled in the study (20 healthy smokers, 20 smokeless-tobacco users, and 20 non-smokers). Smokers had a higher level of serum anti-TMV IgG antibodies than non-smokers, while the serum level of anti-TMV IgA from smokeless tobacco users was lower than smokers and non-smokers. Using bioinformatics, we also found that the human protein TOMM40L (an outer mitochondrial membrane 40 homolog--like translocase) contains a strong homology of six contiguous amino acids to the TMV coat protein, and TOMM40L peptide exhibited cross-reactivity with anti-TMV antibodies. People who smoke cigarettes or other tobacco products experience a lower risk of developing Parkinson's disease, but the mechanism by which this occurs is unclear. Our results showing molecular mimicry between TMV and human TOMM40L raise the question as to whether TMV has a potential role in smokers against Parkinson's disease development. The potential mechanisms of molecular mimicry between plant viruses and human disease should be further explored.
Collapse
Affiliation(s)
- Ruolan Liu
- Department of Neurology, University of Louisville School of Medicine, Louisville, Kentucky, United States of America
| | - Radhika A. Vaishnav
- Department of Neurology, University of Louisville School of Medicine, Louisville, Kentucky, United States of America
| | - Andrew M. Roberts
- Department of Physiology and Biophysics, University of Louisville School of Medicine, Louisville, Kentucky, United States of America
| | - Robert P. Friedland
- Department of Neurology, University of Louisville School of Medicine, Louisville, Kentucky, United States of America
| |
Collapse
|
29
|
Jakubíková M, Piťha J, Latta J, Ehler E, Schutzner J. Myasthenia gravis, Castleman disease, pemphigus, and anti-phospholipid syndrome. Muscle Nerve 2013; 47:447-51. [PMID: 23386221 DOI: 10.1002/mus.23657] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2012] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Myasthenia gravis is an autoimmune disease marked by neuromuscular transmission failure at the neuromuscular junction. Castleman disease is a rare lymphoproliferative disease characterized by non-cancerous angiofolicular hyperplasia of lymphatic tissue. METHODS AND RESULTS We describe a young man with rapid, successive manifestations of myasthenia gravis, a solitary form of Castleman disease, pemphigus vulgaris, and anti-phospholipid syndrome, which resulted in 2 ischemic cerebrovascular events that caused a severe central neurological deficit. DISCUSSION We were unable to find a similar case in the literature, but we hypothesize that the temporal concidence of these clinical entities may be related to a common immunological pathway, such as B-cell activation. Therefore, we treated the patient with an immunosuppressant and anticoagulant treatment, as well as rituximab, a monoclonal antibody therapy against CD20+.
Collapse
Affiliation(s)
- Michala Jakubíková
- Department of Neurology and Center of Clinical Neuroscience, Charles University Prague, First Faculty of Medicine and General University Hospital, Prague Kateřinská 30, 128 01 Praha 2, Czech Republic.
| | | | | | | | | |
Collapse
|
30
|
Wu W, Shi S, Ljunggren HG, Cava AL, Van Kaer L, Shi FD, Liu R. NK cells inhibit T-bet-deficient, autoreactive Th17 cells. Scand J Immunol 2013; 76:559-66. [PMID: 22928727 DOI: 10.1111/j.1365-3083.2012.02773.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The differentiation and maintenance of Th17 cells require a unique cytokine milieu and activation of lineage-specific transcription factors. This process appears to be antagonized by the transcription factor T-bet, which controls the differentiation of Th1 cells. Considering that T-bet-deficient (T-bet(-/-) ) mice are largely devoid of natural killer (NK) cells due to a defect in the terminal maturation of these cells, and because NK cells can influence the differentiation of T helper cells, we investigated whether the absence of NK cells in T-bet-deficient mice contributes to the augmentation of autoreactive Th17 cell responses. We show that the loss of T-bet renders the transcription factors Rorc and STAT3 highly responsive to activation by stimuli provided by NK cells. Furthermore, reconstitution of T-bet(-/-) mice with wild-type NK cells inhibited the development of autoreactive Th17 cells through NK cell-derived production of IFN-γ. These results identify NK cells as critical regulators in the development of autoreactive Th17 cells and Th17-mediated pathology.
Collapse
Affiliation(s)
- W Wu
- Department of Neurology and Tianjin Neurologic Institute, Tianjin Medical University General Hospital, Tianjin, China
| | | | | | | | | | | | | |
Collapse
|
31
|
Parekh VV, Wu L, Olivares-Villagómez D, Wilson KT, Van Kaer L. Activated invariant NKT cells control central nervous system autoimmunity in a mechanism that involves myeloid-derived suppressor cells. THE JOURNAL OF IMMUNOLOGY 2013; 190:1948-60. [PMID: 23345328 DOI: 10.4049/jimmunol.1201718] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Invariant NKT (iNKT) cells are a subset of T lymphocytes that recognize glycolipid Ags presented by the MHC class I-related protein CD1d. Activation of iNKT cells with glycolipid Ags, such as the marine sponge-derived reagent α-galactosylceramide (α-GalCer), results in the rapid production of a variety of cytokines and activation of many other immune cell types. These immunomodulatory properties of iNKT cells have been exploited for the development of immunotherapies against a variety of autoimmune and inflammatory diseases, but mechanisms by which activated iNKT cells confer disease protection have remained incompletely understood. In this study, we demonstrate that glycolipid-activated iNKT cells cooperate with myeloid-derived suppressor cells (MDSCs) in protecting mice against the development of experimental autoimmune encephalomyelitis (EAE) in mice, an animal model for multiple sclerosis. We show that α-GalCer induced the expansion and immunosuppressive activities of MDSCs in the spleen of mice induced for development of EAE. Disease protection in these animals also correlated with recruitment of MDSCs to the CNS. Depletion of MDSCs abrogated the protective effects of α-GalCer against EAE and, conversely, adoptive transfer of MDSCs from α-GalCer-treated mice ameliorated passive EAE induced in recipient animals. The cytokines GM-CSF, IL-4, and IFN-γ, produced by activated iNKT cells, and inducible NO synthase, arginase-1, and IL-10 produced by MDSCs, contributed to these effects. Our findings have revealed cooperative immunosuppressive interactions between iNKT cells and MDSCs that might be exploited for the development of improved immunotherapies for multiple sclerosis and other autoimmune and inflammatory diseases.
Collapse
Affiliation(s)
- Vrajesh V Parekh
- Department of Pathology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | | | | | | | | |
Collapse
|
32
|
Okiyama N, Sugihara T, Oida T, Ohata J, Yokozeki H, Miyasaka N, Kohsaka H. T lymphocytes and muscle condition act like seeds and soil in a murine polymyositis model. ACTA ACUST UNITED AC 2013; 64:3741-9. [PMID: 22806443 DOI: 10.1002/art.34629] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE It has been reported that polymyositis (PM) is driven by CD8+ cytotoxic T lymphocytes. The C protein-induced myositis (CIM) model we have established is similar to PM in pathology except that it undergoes spontaneous remission. We undertook the present study to delineate the roles of innate and acquired immunity in myositis. METHODS C57BL/6 mice were immunized with recombinant C protein fragments together with Freund's complete adjuvant (CFA) and Toll-like receptor (TLR) ligands at hind leg footpads and tail bases. CIM mediated by adoptive transfer of T cells to naive mice was treated with cytokine antagonists. RESULTS Second immunization with C protein fragments revealed no induction of tolerance. Injection of CFA and TLR ligands at the hind leg footpads reinduced myositis in the same legs. Interestingly, initial myositis was observed only in the CFA-treated forelegs. Transfer of C protein fragment-specific T cells from mice with CIM induced myositis in CFA- and TLR ligand-treated legs of recipient mice. CFA treatment resulted in the recruitment of macrophages producing inflammatory cytokines. Induction of myositis was inhibited by blocking interleukin-1 receptor or tumor necrosis factor α. CONCLUSION Myositis development requires activation of autoaggressive T cells and conditioning of muscle tissue. CIM regression is due to attenuation of local CFA-induced immune activation. These results are in accordance with a "seed and soil" model of disease development and might offer clues to decipher clinical aspects of PM.
Collapse
|
33
|
Viale R, Ware R, Maricic I, Chaturvedi V, Kumar V. NKT Cell Subsets Can Exert Opposing Effects in Autoimmunity, Tumor Surveillance and Inflammation. ACTA ACUST UNITED AC 2012; 8:287-296. [PMID: 25288922 DOI: 10.2174/157339512804806224] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The innate-like natural killer T (NKT) cells are essential regulators of immunity. These cells comprise at least two distinct subsets and recognize different lipid antigens presented by the MHC class I like molecules CD1d. The CD1d-dependent recognition pathway of NKT cells is highly conserved from mouse to humans. While most type I NKT cells can recognize αGalCer and express a semi-invariant T cell receptor (TCR), a major population of type II NKT cells reactive to sulfatide utilizes an oligoclonal TCR. Furthermore TCR recognition features of NKT subsets are also distinctive with almost parallel as opposed to perpendicular footprints on the CD1d molecules for the type I and type II NKT cells respectively. Here we present a view based upon the recent studies in different clinical and experimental settings that while type I NKT cells are more often pathogenic, they may also be regulatory. On the other hand, sulfatide-reactive type II NKT cells mostly play an inhibitory role in the control of autoimmune and inflammatory diseases. Since the activity and cytokine secretion profiles of NKT cell subsets can be modulated differently by lipid ligands or their analogs, novel immunotherapeutic strategies are being developed for their differential activation for potential intervention in inflammatory diseases.
Collapse
Affiliation(s)
- Rachael Viale
- Laboratory of Autoimmunity, Torrey Pines Institute for Molecular Studies, San Diego, CA 92121, USA
| | - Randle Ware
- Laboratory of Autoimmunity, Torrey Pines Institute for Molecular Studies, San Diego, CA 92121, USA
| | - Igor Maricic
- Laboratory of Autoimmunity, Torrey Pines Institute for Molecular Studies, San Diego, CA 92121, USA
| | - Varun Chaturvedi
- Laboratory of Autoimmunity, Torrey Pines Institute for Molecular Studies, San Diego, CA 92121, USA
| | - Vipin Kumar
- Laboratory of Autoimmunity, Torrey Pines Institute for Molecular Studies, San Diego, CA 92121, USA
| |
Collapse
|
34
|
Rosalia RA, Štěpánek I, Polláková V, Šímová J, Bieblová J, Indrová M, Moravcová S, Přibylová H, Bontkes HJ, Bubeník J, Sparwasser T, Reiniš M. Administration of anti-CD25 mAb leads to impaired α-galactosylceramide-mediated induction of IFN-γ production in a murine model. Immunobiology 2012. [PMID: 23182710 DOI: 10.1016/j.imbio.2012.10.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
CD4(+)CD25(+)Foxp3(+) T regulatory cells (Tregs) and CD1d-restricted invariant natural killer T (iNKT) cells are two cell types that are known to regulate immune reactions. Depletion or inactivation of Tregs using specific anti-CD25 antibodies in combination with immunostimulation is an attractive modality especially in anti-tumour immunotherapy. However, CD25 is not expressed exclusively on Tregs but also on subpopulations of activated lymphocytes. Therefore, the modulatory effects of the specific anti-CD25 antibodies can also be partially attributed to their interactions with the effector cells. Here, the effector functions of iNKT cells were analysed in combination with anti-CD25 mAb PC61. Upon PC61 administration, α-galactosylceramide (α-GalCer)-mediated activation of iNKT cells resulted in decreased IFN-γ but not IL-4 production. In order to determine whether mutual interactions between Tregs and iNKT cells take place, we compared IFNγ production after α-GalCer administration in anti-CD25-treated and "depletion of regulatory T cell" (DEREG) mice. Since no profound effects on IFNγ induction were observed in DEREG mice, deficient in FoxP3(+) Tregs, our results indicate that the anti-CD25 antibody acts directly on CD25(+) effector cells. In vivo experiments demonstrated that although both α-GalCer and PC61 administration inhibited TC-1 tumour growth in mice, no additive/synergic effects were observed when these substances were used in combination therapy.
Collapse
MESH Headings
- Animals
- Antibodies, Monoclonal/administration & dosage
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/pharmacology
- Antigens, CD1d/immunology
- Antigens, CD1d/metabolism
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Cell Line, Tumor
- Enzyme-Linked Immunosorbent Assay
- Flow Cytometry
- Forkhead Transcription Factors/immunology
- Forkhead Transcription Factors/metabolism
- Galactosylceramides/administration & dosage
- Galactosylceramides/immunology
- Galactosylceramides/pharmacology
- Gene Expression/drug effects
- Gene Expression/immunology
- Heparin-binding EGF-like Growth Factor
- Intercellular Signaling Peptides and Proteins/genetics
- Intercellular Signaling Peptides and Proteins/immunology
- Intercellular Signaling Peptides and Proteins/metabolism
- Interferon-gamma/genetics
- Interferon-gamma/immunology
- Interferon-gamma/metabolism
- Interleukin-2 Receptor alpha Subunit/immunology
- Interleukin-2 Receptor alpha Subunit/metabolism
- Interleukin-4/genetics
- Interleukin-4/immunology
- Interleukin-4/metabolism
- Kaplan-Meier Estimate
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Transgenic
- Natural Killer T-Cells/drug effects
- Natural Killer T-Cells/immunology
- Natural Killer T-Cells/metabolism
- Neoplasms, Experimental/drug therapy
- Neoplasms, Experimental/immunology
- Neoplasms, Experimental/pathology
- Reverse Transcriptase Polymerase Chain Reaction
- T-Lymphocytes, Regulatory/drug effects
- T-Lymphocytes, Regulatory/immunology
- T-Lymphocytes, Regulatory/metabolism
- Tumor Burden/drug effects
- Tumor Burden/immunology
Collapse
Affiliation(s)
- Rodney A Rosalia
- Department of Tumour Immunology of the Institute of Molecular Genetics, v. v. i., Academy of Sciences of the Czech Republic, Prague 4, Czech Republic
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Landouré G, Knight MA, Stanescu H, Taye AA, Shi Y, Diallo O, Johnson JO, Hernandez D, Traynor BJ, Biesecker LG, Elkahloun A, Rinaldi C, Vincent A, Willcox N, Kleta R, Fischbeck KH, Burnett BG. A candidate gene for autoimmune myasthenia gravis. Neurology 2012; 79:342-7. [PMID: 22744667 DOI: 10.1212/wnl.0b013e318260cbd0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
OBJECTIVE We sought to identify a causative mutation in a previously reported kindred with parental consanguinity and 5 of 10 siblings with adult-onset autoimmune myasthenia gravis. METHODS We performed genome-wide homozygosity mapping, and sequenced all known genes in the one region of extended homozygosity. Quantitative and allele-specific reverse transcriptase PCR (RT-PCR) were performed on a candidate gene to determine the RNA expression level in affected siblings and controls and the relative abundance of the wild-type and mutant alleles in a heterozygote. RESULTS A region of shared homozygosity at chromosome 13q13.3-13q14.11 was found in 4 affected siblings and 1 unaffected sibling. A homozygous single nucleotide variant was found in the 3'-untranslated region of the ecto-NADH oxidase 1 gene (ENOX1). No other variants likely to be pathogenic were found in genes in this region or elsewhere. The ENOX1 sequence variant was not found in 764 controls. Quantitative RT-PCR showed that expression of ENOX1 decreased to about 20% of normal levels in lymphoblastoid cells from individuals homozygous for the variant and to about 50% in 2 unaffected heterozygotes. Allele-specific RT-PCR showed a 55%-60% reduction in the level of the variant transcript in heterozygous cells due to reduced mRNA stability. CONCLUSION These results indicate that this sequence variant in ENOX1 may contribute to the familial autoimmune myasthenia in these patients.
Collapse
Affiliation(s)
- Guida Landouré
- Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Early posttransplantation donor-derived invariant natural killer T-cell recovery predicts the occurrence of acute graft-versus-host disease and overall survival. Blood 2012; 120:2144-54. [PMID: 22730537 DOI: 10.1182/blood-2012-01-404673] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Invariant natural killer T (iNKT) cells can experimentally dissociate GVL from graft-versus-host-disease (GVHD). Their role in human conventional allogeneic hematopoietic stem cell transplantation (HSCT) is unknown. Here, we analyzed the post-HSCT recovery of iNKT cells in 71 adult allografted patients. Results were compared with conventional T- and NK-cell recovery and correlated to the occurrence of GVHD, relapse, and survival. We observed that posttransplantation iNKT cells, likely of donor origin, recovered independently of T and NK cells in the first 90 days after HSCT and reached greater levels in recipient younger than 45 years (P = .003) and after a reduced-intensity conditioning regimen (P = .03). Low posttransplantation iNKT/T ratios (ie, < 10(-3)) were an independent factor associated with the occurrence of acute GVHD (aGVHD; P = .001). Inversely, reaching iNKT/T ratios > 10(-3) before day 90 was associated with reduced nonrelapse mortality (P = .009) without increased risk of relapse and appeared as an independent predictive factor of an improved overall survival (P = .028). Furthermore, an iNKT/T ratio on day 15 > 0.58 × 10(-3) was associated with a 94% risk reduction of aGVHD. These findings provide a proof of concept that early postallogeneic HSCT iNKT cell recovery can predict the occurrence of aGVHD and an improved overall survival.
Collapse
|
37
|
Jadidi-Niaragh F, Jeddi-Tehrani M, Ansaripour B, Razavi SM, Sharifian RA, Shokri F. Reduced frequency of NKT-like cells in patients with progressive chronic lymphocytic leukemia. Med Oncol 2012; 29:3561-9. [PMID: 22669567 DOI: 10.1007/s12032-012-0262-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2012] [Accepted: 05/21/2012] [Indexed: 01/08/2023]
Abstract
Natural killer T (NKT) cells are a subset of innate immune cells displaying a limited repertoire of antigen specificities and CD1d restriction. Little is known about contribution of NKT cells in cancer initiation and progression. In this study, the frequencies of NKT-like cells, B cells expressing CD1d molecule and CD4(+) regulatory (Treg) cells were analyzed in 40 patients with chronic lymphocytic leukemia (CLL) and 15 healthy subjects by flow cytometry. Our results showed that the frequency of CD3(+)CD56(+) NKT-like cells is significantly decreased in progressive (4.9 ± 0.8 % of total CD3(+) T cells) compared with indolent (8.1 ± 1.2 %, p = 0.036) patients and healthy subjects (10.6 ± 1.7 %, p = 0.003). However, no association was found between NKT-like cell frequency and immunoglobulin heavy chain variable region gene (IGHV) mutation or CD38 and ZAP70 expression. On the other hand, expression of CD1d molecule was significantly higher in leukemic B cells of patients with CLL (75 ± 1.5 % of total CD19(+) B cells) compared to B cells from healthy subjects (59.6 ± 2.2 %, p < 0.001), with no significant difference between progressive and indolent patients. Interestingly, the frequency of Treg cells was inversely correlated with that of NKT-like cells in patients with CLL (r = -0.4, p = 0.002). Our results suggest a protective role for NKT-like cells in patients with CLL, which seems to be downregulated presumably by Treg cells.
Collapse
Affiliation(s)
- Farhad Jadidi-Niaragh
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, 14155, Iran
| | | | | | | | | | | |
Collapse
|
38
|
Interactions between NKT cells and Tregs are required for tolerance to combined bone marrow and organ transplants. Blood 2011; 119:1581-9. [PMID: 22174155 DOI: 10.1182/blood-2011-08-371948] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
We used a model of combined bone marrow and heart transplantation, in which tolerance and stable chimerism is induced after conditioning with fractionated irradiation of the lymphoid tissues and anti-T-cell antibodies. Graft acceptance and chimerism required host CD4(+)CD25(+) Treg production of IL-10 that was in-turn enhanced by host invariant natural killer (NK) T-cell production of IL-4. Up-regulation of PD-1 on host Tregs, CD4(+)CD25(-) conventional T (Tcon) cells, and CD8(+) T cells was also enhanced by NKT cell production of IL-4. Up-regulated PD-1 expression on Tregs was linked to IL-10 secretion, on CD8(+) T cells was linked to Tim-3 expression, and on CD4(+) Tcon cells was associated with reduced IFNγ secretion. Changes in the expression of PD-1 were induced by the conditioning regimen, and declined after bone marrow transplantation. In conclusion, NKT cells in this model promoted changes in expression of negative costimulatory receptors and anti-inflammatory cytokines by Tregs and other T-cell subsets in an IL-4-dependent manner that resulted in tolerance to the bone marrow and organ grafts.
Collapse
|
39
|
Schneiders FL, de Bruin RCG, Santegoets SJAM, Bonneville M, Scotet E, Scheper RJ, Verheul HMW, de Gruijl TD, van der Vliet HJ. Activated iNKT cells promote Vγ9Vδ2-T cell anti-tumor effector functions through the production of TNF-α. Clin Immunol 2011; 142:194-200. [PMID: 22122798 DOI: 10.1016/j.clim.2011.10.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 10/19/2011] [Accepted: 10/22/2011] [Indexed: 10/15/2022]
Abstract
Vγ9Vδ2-T cells constitute a proinflammatory lymphocyte subpopulation with established antitumor activity. Phosphoantigens activate Vγ9Vδ2-T cells in vivo and in vitro. We studied whether the antitumor activity of Vγ9Vδ2-T cells can be potentiated by invariant NKT cells (iNKT), an important immunoregulatory T cell subset. When activated by the glycolipid α-galactosylceramide (α-GalCer), iNKT produce large amounts of cytokines involved in antitumor immune responses. Monocyte-derived dendritic cells were loaded with both phosphoantigens (using aminobisphosphonates) and α-GalCer during maturation and subsequently co-cultured with Vγ9Vδ2-T and iNKT cells. Aminobisphosphonates dose-dependently enhanced Vγ9Vδ2-T cell activation, and this was potentiated by α-GalCer-induced iNKT co-activation. iNKT co-activation also enhanced the IFN-γ production and cytolytic potential of Vγ9Vδ2-T cells against tumor cells. Using transwell experiments and neutralizing antibodies cross-talk between iNKT and Vγ9Vδ2-T cells was found to be mediated by TNF-α. Our data provide a rationale for combining both activating ligands to improve Vγ9Vδ2-T cell based approaches in cancer-immunotherapy.
Collapse
Affiliation(s)
- Famke L Schneiders
- Department of Medical Oncology, VU University Medical Center, De Boelelaan 1117, 1081 HV Amsterdam, The Netherlands.
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Zakka LR, Fradkov E, Keskin DB, Tabansky I, Stern JNH, Ahmed AR. The role of natural killer cells in autoimmune blistering diseases. Autoimmunity 2011; 45:44-54. [PMID: 21923616 DOI: 10.3109/08916934.2011.606446] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The major focus of this paper is to describe and evaluate current information on the role of natural killer cells (NK cells) in the pathogenesis of blistering diseases. Until now, only pemphigus vulgaris (PV) has been studied. One co-culture study demonstrated that CD4+ T cells from the peripheral blood or perilesional skin of patients with active disease proliferate and secrete cytokines in the presence of major histocompatibility class II-expressing NK cells loaded with antigenic desmoglein self-peptides. Another study showed that NK cells can contribute to a T helper type 2-biased immune response through impaired interleukins (IL)-12 signaling and upregulation of IL, IL-10 and IL-5. Although significant data on other blistering diseases are unavailable at present, some studies implicate NK cells in disease progression. For instance, information on the role of NK cells in psoriasis and their production of tumor necrosis factor-α (TNF-α) will be provided since several TNF-α-inhibitors are used in its treatment. Studies on alopecia areata are also included in this paper because NK cells seem to play a key role in its pathogenesis. This review highlights the potential importance of NK cells and NKT cells as members of the large repertoire of cells and soluble mediators that play a critical role in pathogenesis of blistering diseases and other autoimmune diseases involving the skin. Therefore, the authors advocate a greater focus and interest on the study of the interaction of NK cells and the skin.
Collapse
Affiliation(s)
- L R Zakka
- Center for Blistering Diseases, Boston, MA 02120, USA
| | | | | | | | | | | |
Collapse
|
41
|
Hwang I, Ahn G, Park E, Ha D, Song JY, Jee Y. An acidic polysaccharide of Panax ginseng ameliorates experimental autoimmune encephalomyelitis and induces regulatory T cells. Immunol Lett 2011; 138:169-78. [DOI: 10.1016/j.imlet.2011.04.005] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2010] [Revised: 04/10/2011] [Accepted: 04/10/2011] [Indexed: 10/18/2022]
|
42
|
Engelmann P, Farkas K, Kis J, Richman G, Zhang Z, Liew CW, Borowiec M, Niewczas MA, Jalahej H, Orbán T. Characterization of human invariant natural killer T cells expressing FoxP3. Int Immunol 2011; 23:473-84. [PMID: 21708895 DOI: 10.1093/intimm/dxr040] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Recently described forkhead box protein 3 (FoxP3) transcription factor is a key molecule in CD4+ CD25hi+ T-cell characterization. Invariant NK T (iNKT) cells are also characterized as regulatory cells modulating the immune response by rapidly producing T(h)1 and T(h)2 cytokines. We aimed to analyze cellular markers important in regulatory features of human iNKT cells and to study their role in functional assays. iNKT cells were single cell sorted from peripheral mononuclear cells of healthy individuals after immunostaining of invariant TCR α-chain. We found FoxP3 expression in human iNKT clones. Randomly selected iNKT cell clones (CD4+, double negative, CD8+) expressed FoxP3 mRNA and protein at different levels upon stimulation as supported by various approaches. FoxP3 mRNA and protein expression was detected in unstimulated iNKT cells as well. Furthermore, different stimulations changed the FoxP3 expression in iNKT cells over time and the most dramatic changes were observed upon anti-CD3 stimulation. Both the supernatant of iNKT cells and iNKT cells themselves exerted similar stimulation effects on PBMC proliferation in functional assays and these stimulations showed a negative correlation with FoxP3 expression. Our data indicate that the FoxP3 expression in iNKT cells may be a key transcriptional factor in controlling the regulatory function of the iNKT cells.
Collapse
Affiliation(s)
- Péter Engelmann
- Section for Immunology and Immunogenetics, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02115, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Van Kaer L, Parekh VV, Wu L. Invariant NK T cells: potential for immunotherapeutic targeting with glycolipid antigens. Immunotherapy 2011; 3:59-75. [PMID: 21174558 DOI: 10.2217/imt.10.85] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Invariant NK T (iNKT) cells are a subset of T lymphocytes that recognize glycolipid antigens bound with the antigen-presenting molecule CD1d. iNKT cells have potent immunoregulatory activities that can promote or suppress immune responses during different pathological conditions. These immunoregulatory properties can be harnessed for therapeutic purposes with cognate glycolipid antigens, such as the marine sponge-derived glycosphingolipid α-galactosylceramide. Preclinical studies have shown substantial promise for iNKT cell-based treatments of infections, cancer and autoimmune and inflammatory diseases. Translation of these preclinical studies to the clinic, while faced with some obstacles, has already had some initial success. In this article, we review the immunodulatory activities of iNKT cells and the potential for developing iNKT cell-based prophylactic and curative therapies of human disease.
Collapse
Affiliation(s)
- Luc Van Kaer
- Department of Microbiology & Immunology, Vanderbilt University School of Medicine, Medical Center North, Room A-5301, 1161 21st Avenue South, Nashville, TN 37232-32363, USA.
| | | | | |
Collapse
|
44
|
Buschard K, Hansen AK, Jensen K, Lindenbergh-Kortleve DJ, de Ruiter LF, Krohn TC, Hufeldt MR, Vogensen FK, Aasted B, Osterbye T, Roep BO, de Haar C, Nieuwenhuis EE. Alcohol facilitates CD1d loading, subsequent activation of NKT cells, and reduces the incidence of diabetes in NOD mice. PLoS One 2011; 6:e17931. [PMID: 21483778 PMCID: PMC3069977 DOI: 10.1371/journal.pone.0017931] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Accepted: 02/20/2011] [Indexed: 01/13/2023] Open
Abstract
Background Ethanol (‘alcohol’) is a partly hydrophobic detergent that may affect the accessibility of glycolipids thereby influencing immunological effects of these molecules. Methods The study included cellular in vitro tests using α-galactosylceramide (αGalCer), and in vivo NOD mice experiments detecting diabetes incidence and performing behavioural and bacterial analyses. Results Alcohol in concentrations from 0.6% to 2.5% increased IL-2 production from NKT cells stimulated with αGalCer by 60% (p<0.05). CD1d expressed on HeLa cells contained significantly increasing amounts of αGalCer with increasing concentrations of alcohol, suggesting that alcohol facilitated the passive loading of αGalCer to CD1d. NOD mice were found to tolerate 5% ethanol in their drinking water without signs of impairment in liver function. Giving this treatment, the diabetes incidence declined significantly. Higher numbers of CD3+CD49b+ NKT cells were found in spleen and liver of the alcohol treated compared to the control mice (p<0.05), whereas the amount of CD4+Foxp3+ regulator T cells did not differ. Increased concentrations of IFN-γ were detected in 24-hour blood samples of alcohol treated mice. Behavioural studies showed no change in attitude of the ethanol-consuming mice, and bacterial composition of caecum samples was not affected by alcohol, disqualifying these as protective mechanisms. Conclusion Alcohol facilitates the uptake of glycolipids and the stimulation of NKT cells, which are known to counteract Type 1 diabetes development. We propose that this is the acting mechanism by which treatment with alcohol reduces the incidence of diabetes in NOD mice. This is corroborated by epidemiology showing beneficial effect of alcohol to reduce the severity of atherosclerosis and related diseases.
Collapse
|
45
|
Hao J, Campagnolo D, Liu R, Piao W, Shi S, Hu B, Xiang R, Zhou Q, Vollmer T, Van Kaer L, La Cava A, Shi FD. Interleukin-2/interleukin-2 antibody therapy induces target organ natural killer cells that inhibit central nervous system inflammation. Ann Neurol 2011; 69:721-34. [PMID: 21425186 DOI: 10.1002/ana.22339] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2010] [Revised: 10/26/2010] [Accepted: 11/12/2010] [Indexed: 11/09/2022]
Abstract
OBJECTIVE The role of natural killer (NK) cells in regulating multiple sclerosis (MS) is not well understood. Additional studies with NK cells might provide insight into the mechanism of action of MS therapies such as daclizumab, an antibody against the interleukin (IL)-2R α-chain, which induces expansion of CD56(bright) NK cells. METHODS In a relapsing-remitting form of the experimental autoimmune encephalomyelitis (EAE) model of MS induced in SJL mice, we expanded NK cells with IL-2 coupled with an anti-IL-2 monoclonal antibody (mAb) and evaluated the effects of these NK cells on EAE. Further, we investigated the effect of the human version of IL-2/IL-2 mAb on NK cells from MS patients and its effect on central nervous system (CNS) inflammation and pathology in a human-mouse chimera model and assessed the underlying mechanisms. RESULTS IL-2/IL-2 mAb dramatically expands NK cells both in the peripheral lymphoid organs and in the CNS, and attenuates CNS inflammation and neurological deficits. Disease protection is conferred by CNS-resident NK cells. Importantly, the human version of IL-2/IL-2 mAb restored the defective CD56(+) NK cells from MS patients in a human-mouse chimera model. Both the CD56(bright) and CD56(dim) subpopulations were required to attenuate disease in this model. INTERPRETATION These findings unveil the immunotherapeutic potential of NK cells, which can act as critical suppressor cells in target organs of autoimmunity. These results also have implications to better understand the mechanism of action of daclizumab in MS.
Collapse
Affiliation(s)
- Junwei Hao
- Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Pal J, Rozsa C, Komoly S, Illes Z. Clinical and biological heterogeneity of autoimmune myasthenia gravis. J Neuroimmunol 2011; 231:43-54. [DOI: 10.1016/j.jneuroim.2010.10.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
47
|
Wu L, Van Kaer L. Natural killer T cells in health and disease. Front Biosci (Schol Ed) 2011; 3:236-51. [PMID: 21196373 DOI: 10.2741/s148] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Natural killer T (NKT) cells are a subset of T lymphocytes that share surface markers and functional characteristics with both conventional T lymphocytes and natural killer cells. Most NKT cells express a semi-invariant T cell receptor that reacts with glycolipid antigens presented by the major histocompatibility complex class I-related protein CD1d on the surface of antigen-presenting cells. NKT cells become activated during a variety of infections and inflammatory conditions, rapidly producing large amounts of immunomodulatory cytokines. NKT cells can influence the activation state and functional properties of multiple other cell types in the immune system and, thus, modulate immune responses against infectious agents, autoantigens, tumors, tissue grafts and allergens. One attractive aspect of NKT cells is that their immunomodulatory activities can be readily harnessed with cognate glycolipid antigens, such as the marine sponge-derived glycosphingolipid alpha-galactosylceramide. These properties of NKT cells are being exploited for therapeutic intervention to prevent or treat cancer, infections, and autoimmune and inflammatory diseases.
Collapse
Affiliation(s)
- Lan Wu
- Department of Microbiology and Immunology, Room A-5301, Medical Center North, 1161 21st Avenue South, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-2363, USA
| | | |
Collapse
|
48
|
Novak J, Lehuen A. Mechanism of regulation of autoimmunity by iNKT cells. Cytokine 2010; 53:263-70. [PMID: 21185200 DOI: 10.1016/j.cyto.2010.11.001] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2010] [Revised: 10/06/2010] [Accepted: 11/04/2010] [Indexed: 02/07/2023]
Abstract
iNKT cells, CD1d dependent natural killer T cells are a unique population of T cells. The capacity of iNKT cells to produce regulatory cytokines first provided an indication of their regulatory potential. Later on, in experimental models as well as in patients afflicted with an auto-immune disease, such as Type 1 diabetes mellitus, multiple sclerosis, and systemic lupus erythematosus along with others, a deficit in iNKT cell number was observed, suggesting the role these cells may possibly have in the prevention of auto-immune diseases. More importantly, experimental strategies which focused on increasing the volume or stimulation of iNKT cells in laboratory animals, demonstrated an improved level of protection against the development of auto-immune diseases. This article reviews the mechanism of protection against autoimmunity by iNKT cells, discusses the obstacles against and indications for the potential use of iNKT cell manipulation in the treatment of human auto-immune diseases.
Collapse
Affiliation(s)
- Jan Novak
- 3rd Faculty of Medicine, Charles University in Prague, Centre of Research for Diabetes, Endocrinological Diseases and Clinical Nutrition, Czech Republic.
| | | |
Collapse
|
49
|
Adoptive transfer of DNT cells induces long-term cardiac allograft survival and augments recipient CD4(+)Foxp3(+) Treg cell accumulation. Transpl Immunol 2010; 24:119-26. [PMID: 21073952 DOI: 10.1016/j.trim.2010.11.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2010] [Revised: 11/03/2010] [Accepted: 11/04/2010] [Indexed: 01/26/2023]
Abstract
Regulatory T (Treg) cells play an important role in the regulation of immune responses but whether Treg will induce tolerance in transplant recipients in the clinic remains unknown. Our previous studies have shown that TCRαβ(+)CD3(+)CD4⁻CD8⁻NK1.1⁻ (double negative, DN) T cells suppress T cell responses and prolong allograft survival in a single locus MHC-mismatched mouse model. In this study, we investigated the role of DNT cells in a more robust, fully MHC-mismatched BALB/c to C57BL/6 transplantation model, which may be more clinically relevant. Adoptive transfer of DNT cells in combination with short-term rapamycin treatment (days 1-9) induced long-term heart allograft survival (101±31 vs. 39±13 days rapamycin alone, p<0.01). Furthermore adoptive transfer DNT cells augmented CD4+Foxp3+ Treg cells accumulation in transplant recipients while depletion of CD4(+) Treg cells by anti-CD25 inhibited the effect of DNT cells on long-term graft survival (48±12 days vs. 101±31 days, p<0.001). In conclusion, DNT cells combined with short-term immunosuppression can prolong allograft survival, which may be through the accumulation of CD4(+)Foxp3(+) Treg cells in the recipient. Our result suggests that allograft tolerance may require the co-existence of different type Treg cell phenotypes which are affected by current immunosuppression.
Collapse
|
50
|
Kohrt HE, Pillai AB, Lowsky R, Strober S. NKT cells, Treg, and their interactions in bone marrow transplantation. Eur J Immunol 2010; 40:1862-9. [PMID: 20583031 DOI: 10.1002/eji.201040394] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Bone marrow transplantation (BMT) is a potentially curative treatment for patients with leukemia and lymphoma. Tumor eradication is promoted by the anti-tumor activity of donor T cells contained in the transplant; however, donor T cells also mediate the serious side effect of graft-versus-host disease (GVHD). Separation of GVHD from graft anti-tumor activity is an important goal of research in improving transplant outcome. One approach is to take advantage of the immunomodulatory activity of regulatory NKT cells and CD4(+)CD25(+) Treg of host and/or donor origin. Both host and donor NKT cells and donor Treg are able to prevent GVHD in murine models. In this review, we summarize the mechanisms of NKT cell- and Treg-mediated protection against GVHD in mice while maintaining graft anti-tumor activity. In addition, we also examine the interactions between NKT cells and Treg in the context of BMT, and integrate the data from murine experimental models with the observations made in humans.
Collapse
Affiliation(s)
- Holbrook E Kohrt
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | | | | | | |
Collapse
|