1
|
Baeten P, Hamad I, Hoeks C, Hiltensperger M, Van Wijmeersch B, Popescu V, Aly L, Somers V, Korn T, Kleinewietfeld M, Hellings N, Broux B. Rapamycin rescues loss of function in blood-brain barrier-interacting Tregs. JCI Insight 2024; 9:e167457. [PMID: 38386413 PMCID: PMC11128200 DOI: 10.1172/jci.insight.167457] [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: 11/28/2022] [Accepted: 02/15/2024] [Indexed: 02/24/2024] Open
Abstract
In autoimmunity, FOXP3+ Tregs skew toward a proinflammatory, nonsuppressive phenotype and are, therefore, unable to control the exaggerated autoimmune response. This largely affects the success of autologous Treg therapy, which is currently under investigation for autoimmune diseases, including multiple sclerosis (MS). There is a need to ensure in vivo Treg stability before successful application of Treg therapy. Using genetic fate-mapping mice, we demonstrate that inflammatory, cytokine-expressing exFOXP3 T cells accumulate in the CNS during experimental autoimmune encephalomyelitis. In a human in vitro model, we discovered that interaction with inflamed blood-brain barrier endothelial cells (BBB-ECs) induces loss of function by Tregs. Transcriptome and cytokine analysis revealed that in vitro migrated Tregs have disrupted regenerative potential and a proinflammatory Th1/17 signature, and they upregulate the mTORC1 signaling pathway. In vitro treatment of migrated human Tregs with the clinically approved mTORC1 inhibitor rapamycin restored suppression. Finally, flow cytometric analysis indicated an enrichment of inflammatory, less-suppressive CD49d+ Tregs in the cerebrospinal fluid of people with MS. In summary, interaction with BBB-ECs is sufficient to affect Treg function, and transmigration triggers an additive proinflammatory phenotype switch. These insights help improve the efficacy of autologous Treg therapy of MS.
Collapse
Affiliation(s)
- Paulien Baeten
- Universitair MS Centrum, Campus Diepenbeek, Belgium
- Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Ibrahim Hamad
- Universitair MS Centrum, Campus Diepenbeek, Belgium
- VIB Laboratory of Translational Immunomodulation, Center for Inflammation Research (IRC), Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Cindy Hoeks
- Universitair MS Centrum, Campus Diepenbeek, Belgium
- Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Michael Hiltensperger
- Klinikum Rechts der Isar, Institute for Experimental Neuroimmunology, Technische Universität München, Munich, Germany
| | - Bart Van Wijmeersch
- Universitair MS Centrum, Campus Pelt, Belgium
- Noorderhart, Revalidatie & MS Centrum, Pelt, Belgium
| | - Veronica Popescu
- Universitair MS Centrum, Campus Pelt, Belgium
- Noorderhart, Revalidatie & MS Centrum, Pelt, Belgium
| | - Lilian Aly
- Klinikum Rechts der Isar, Institute for Experimental Neuroimmunology, Technische Universität München, Munich, Germany
| | - Veerle Somers
- Universitair MS Centrum, Campus Diepenbeek, Belgium
- Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Thomas Korn
- Klinikum Rechts der Isar, Institute for Experimental Neuroimmunology, Technische Universität München, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Markus Kleinewietfeld
- Universitair MS Centrum, Campus Diepenbeek, Belgium
- VIB Laboratory of Translational Immunomodulation, Center for Inflammation Research (IRC), Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Niels Hellings
- Universitair MS Centrum, Campus Diepenbeek, Belgium
- Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Bieke Broux
- Universitair MS Centrum, Campus Diepenbeek, Belgium
- Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| |
Collapse
|
2
|
Xu N, Han X, Zhang X, Wang J, Yuan J, Wang M, Wu H, Huang F, Shi H, Yang L, Wu X. Huangqi-Guizhi-Wuwu decoction regulates differentiation of CD4 + T cell and prevents against experimental autoimmune encephalomyelitis progression in mice. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 125:155239. [PMID: 38308917 DOI: 10.1016/j.phymed.2023.155239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/14/2023] [Accepted: 11/22/2023] [Indexed: 02/05/2024]
Abstract
BACKGROUND Multiple sclerosis (MS) is a demyelination disorder caused by an overactive immune response. Its pathological characteristics include CNS inflammation, white matter demyelination, glial cell proliferation, and so on. Huangqi-Guizhi-Wuwu Decoction (HGWD), which is recorded in the Synopsis of the Golden Chamber, is used clinically for the therapy of MS, but its mechanism is still elusive. PURPOSE This study was aimed to investigate the impact of HGWD on the classical animal model for MS, experimental autoimmune encephalomyelitis (EAE), and explore the underlying action mechanism. RESULTS HGWD ameliorated the pathogenesis of EAE mice, and improved their neurobehavior and pathological tissue damage. Network pharmacology predictions revealed the action mechanism of HGWD in EAE mice might be related to its effect on the immune system of mice. HGWD effectively suppressed the inflammatory infiltration in CNS, while also preventing the elevation of CD4+T cells of mice with EAE. HGWD could increase the ratio of Treg cells, up-regulate the secretion of IL-10 and Foxp3 mRNA expression, inhibit the ratio of Th1 and Th17 cells, down-regulate the IFN-γ and IL-17 protein expression, as well as the RORγT and T-bet gene expression in EAE mice. In addition, HGWD-containing serum modulated Th1/Th17/Treg cell differentiation in vitro. Moreover, HGWD inhibited the p-JAK1, p-JAK2, p-STAT1, p-STAT3 and p-STAT4 proteins and elevated the p-STAT5 protein in lymphoid tissues of EAE mice. CONCLUSION HGWD improved the progress of EAE by regulating the proportion of CD4+T cell subtype differentiation, which might be exerted through JAK/STAT signaling pathway, providing a pharmacological basis for the clinical treatment of MS.
Collapse
Affiliation(s)
- Nuo Xu
- Shanghai Key Laboratory of Compound Chinese Medicines, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, the MOE Innovation Centre for Basic Medicine Research on Qi-Blood TCM Theories, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Xinyan Han
- Shanghai Key Laboratory of Compound Chinese Medicines, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, the MOE Innovation Centre for Basic Medicine Research on Qi-Blood TCM Theories, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Xiaojuan Zhang
- Shanghai Key Laboratory of Compound Chinese Medicines, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, the MOE Innovation Centre for Basic Medicine Research on Qi-Blood TCM Theories, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Junhao Wang
- Shanghai Key Laboratory of Compound Chinese Medicines, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, the MOE Innovation Centre for Basic Medicine Research on Qi-Blood TCM Theories, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Jinfeng Yuan
- Shanghai Key Laboratory of Compound Chinese Medicines, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, the MOE Innovation Centre for Basic Medicine Research on Qi-Blood TCM Theories, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Mengxue Wang
- Shanghai Key Laboratory of Compound Chinese Medicines, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, the MOE Innovation Centre for Basic Medicine Research on Qi-Blood TCM Theories, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Hui Wu
- Shanghai Key Laboratory of Compound Chinese Medicines, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, the MOE Innovation Centre for Basic Medicine Research on Qi-Blood TCM Theories, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Fei Huang
- Shanghai Key Laboratory of Compound Chinese Medicines, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, the MOE Innovation Centre for Basic Medicine Research on Qi-Blood TCM Theories, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Hailian Shi
- Shanghai Key Laboratory of Compound Chinese Medicines, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, the MOE Innovation Centre for Basic Medicine Research on Qi-Blood TCM Theories, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Liu Yang
- Central Laboratory, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200021, China
| | - Xiaojun Wu
- Shanghai Key Laboratory of Compound Chinese Medicines, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, the MOE Innovation Centre for Basic Medicine Research on Qi-Blood TCM Theories, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| |
Collapse
|
3
|
Chen J, Zhuang L, Li Y, Wu K, Duan Y, Feng J, Sun D, Qu Z, Shi L. CD8 +iTregs mediate the protective effect of rapamycin against graft versus host disease in a humanized murine model. Transpl Immunol 2023; 77:101805. [PMID: 36841514 DOI: 10.1016/j.trim.2023.101805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 01/29/2023] [Accepted: 02/21/2023] [Indexed: 02/27/2023]
Abstract
CD8+Tregs are important immunoregulatory cells that participate in immunopathological processes in many diseases. Rapamycin (Rapa) is a macrolide immunosuppressant that inhibits the mammalian target of rapamycin (mTOR) and has been shown to improve CD4+-induced Tregs (iTregs) generation. This study aimed to evaluate the role of Rapa in the generation and function of CD8+iTregs. Human CD8 + CD25-CD45RA + T cells were divided into two groups, one with Rapa and the other without Rapa, and both groups were cultured under Treg-induced conditions. Rapa significantly improved Foxp3 expression and the suppressive function of CD8+iTregs in vitro. Further studies showed that Rapa suppressed inflammatory cytokine expression and enhanced anti-inflammatory cytokine expression. Under inflammatory conditions in vitro, Rapa-CD8 + iTregs sustained Foxp3 and anti-inflammatory cytokine expression. An in-depth study showed that Rapa regulated CpG demethylation in the Foxp3 region and STAT1 and STAT3 phosphorylation in CD8+iTregs. Finally, we compared the regulatory ability of Rapa and all-trans retinoic acid, another reagent that stimulates CD4+ iTreg generation in vitro, which showed that Rapa, but not all-trans retinoic acid, improved CD8+ iTreg induction and suppressed CD4+T cell expansion in vitro and protected against graft-versus-host disease in a humanized murine model in vivo. These results strongly suggest that CD8+iTregs initiated by Rapa may represent a new therapeutic strategy for inflammatory and autoimmune diseases.
Collapse
Affiliation(s)
- Jing Chen
- The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Lin Zhuang
- Department of General Surgery, Wujin Affiliated Hospital of Jiangsu University and The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu, China
| | - Yuanjiu Li
- The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Kejia Wu
- The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Yunfei Duan
- The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Jin Feng
- Department of Gastrointestinal Sugery, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soohow University, Changzhou, Jiangsu, China
| | - Donglin Sun
- The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China.
| | - Zhen Qu
- The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China.
| | - Longqing Shi
- The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China.
| |
Collapse
|
4
|
FDA-Approved Kinase Inhibitors in Preclinical and Clinical Trials for Neurological Disorders. Pharmaceuticals (Basel) 2022; 15:ph15121546. [PMID: 36558997 PMCID: PMC9784968 DOI: 10.3390/ph15121546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 12/09/2022] [Accepted: 12/09/2022] [Indexed: 12/14/2022] Open
Abstract
Cancers and neurological disorders are two major types of diseases. We previously developed a new concept termed "Aberrant Cell Cycle Diseases" (ACCD), revealing that these two diseases share a common mechanism of aberrant cell cycle re-entry. The aberrant cell cycle re-entry is manifested as kinase/oncogene activation and tumor suppressor inactivation, which are hallmarks of both tumor growth in cancers and neuronal death in neurological disorders. Therefore, some cancer therapies (e.g., kinase inhibition, tumor suppressor elevation) can be leveraged for neurological treatments. The United States Food and Drug Administration (US FDA) has so far approved 74 kinase inhibitors, with numerous other kinase inhibitors in clinical trials, mostly for the treatment of cancers. In contrast, there are dire unmet needs of FDA-approved drugs for neurological treatments, such as Alzheimer's disease (AD), intracerebral hemorrhage (ICH), ischemic stroke (IS), traumatic brain injury (TBI), and others. In this review, we list these 74 FDA-approved kinase-targeted drugs and identify those that have been reported in preclinical and/or clinical trials for neurological disorders, with a purpose of discussing the feasibility and applicability of leveraging these cancer drugs (FDA-approved kinase inhibitors) for neurological treatments.
Collapse
|
5
|
Burkard T, Herrero San Juan M, Dreis C, Kiprina A, Namgaladze D, Siebenbrodt K, Luger S, Foerch C, Pfeilschifter JM, Weigert A, Radeke HH. Differential expression of CD8 defines phenotypically distinct cytotoxic T cells in cancer and multiple sclerosis. Clin Transl Med 2022; 12:e1068. [PMID: 36504430 PMCID: PMC9742381 DOI: 10.1002/ctm2.1068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 09/13/2022] [Accepted: 09/19/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Cytotoxic T lymphocytes take on a leading role in many immune-related diseases. They function as key effector immune cells fighting cancer cells, but they are also considerably involved in autoimmune diseases. Common to both situations, CD8+ T cells need to adapt their metabolism and effector function to the harsh and nutrient-deprived conditions of the disease-associated microenvironment. METHODS We used an in vitro starvation as well as rapamycin treatment protocol mimicking nutrient deprivation to generate CD8Low versus CD8High T cells and performed FACS-Sorting followed by transcriptomic profiling of the cytotoxic T cell subsets. Prominent markers identified in the CD8Low versus the CD8High T cells were then used to investigate the presence of these cell subsets in immune-related human diseases. Employing cancer tissue microarrays and PhenOptics multispectral imaging as well as flow cytometry, we studied these CD8+ T cell subsets in cancer and relapsing-remitting multiple sclerosis patients. RESULTS Starvation induced a decreased expression of CD8, yielding a CD8Low T cell subpopulation with an altered transcriptomic signature and reduced effector function. CD8Low T cell showed enhanced ST2L and IL6ST (CD130) expression compared to CD8High T cells which expressed elevated KLRD1 (CD94) and granzyme B levels within the tumour microenvironment (TME). Spatial analysis revealed the presence of CD8High T cells in close proximity to tumour cells, while the CD8Low T cells resided at the tumour boundaries. Importantly, the number of tumour-infiltrating CD8Low T lymphocytes correlated with a poor prognosis as well as with enhanced cancer progression in human mammary carcinoma. We also found a reduced frequency of CD8Low T lymphocytes in a cohort of relapse (disease active) multiple sclerosis patients compared to healthy subjects during immune cell starvation in vitro. CONCLUSIONS In summary, our data show that functionally distinct cytotoxic T lymphocytes can be identified based on their expression of CD8. Indicating a more general role in CD8 T cell immunity, these cells may play opposing roles in the TME, and also in the pathophysiology of autoimmune diseases such as multiple sclerosis.
Collapse
Affiliation(s)
- Tobias Burkard
- Pharmazentrum Frankfurt/ZAFESInstitute of Pharmacology and ToxicologyHospital of the Goethe UniversityFrankfurt am MainGermany
| | - Martina Herrero San Juan
- Pharmazentrum Frankfurt/ZAFESInstitute of Pharmacology and ToxicologyHospital of the Goethe UniversityFrankfurt am MainGermany
| | - Caroline Dreis
- Pharmazentrum Frankfurt/ZAFESInstitute of Pharmacology and ToxicologyHospital of the Goethe UniversityFrankfurt am MainGermany
| | - Anastasiia Kiprina
- Faculty of MedicineInstitute of Biochemistry IGoethe‐University Frankfurt/MainFrankfurt am MainGermany
| | - Dmitry Namgaladze
- Faculty of MedicineInstitute of Biochemistry IGoethe‐University Frankfurt/MainFrankfurt am MainGermany
| | - Kai Siebenbrodt
- Department of NeurologyGoethe University Hospital FrankfurtFrankfurt am MainGermany
- Epilepsy Center Frankfurt Rhine‐MainDepartment of NeurologyUniversity Hospital Frankfurt, Frankfurt, Germany
| | - Sebastian Luger
- Department of NeurologyGoethe University Hospital FrankfurtFrankfurt am MainGermany
| | - Christian Foerch
- Department of NeurologyGoethe University Hospital FrankfurtFrankfurt am MainGermany
| | - Josef M. Pfeilschifter
- Pharmazentrum Frankfurt/ZAFESInstitute of Pharmacology and ToxicologyHospital of the Goethe UniversityFrankfurt am MainGermany
| | - Andreas Weigert
- Faculty of MedicineInstitute of Biochemistry IGoethe‐University Frankfurt/MainFrankfurt am MainGermany
- Frankfurt Cancer InstituteGoethe‐University FrankfurtFrankfurtGermany
- Cardio‐Pulmonary Institute (CPI)FrankfurtGermany
| | - Heinfried H. Radeke
- Pharmazentrum Frankfurt/ZAFESInstitute of Pharmacology and ToxicologyHospital of the Goethe UniversityFrankfurt am MainGermany
| |
Collapse
|
6
|
O'Shea AE, Valdera FA, Ensley D, Smolinsky TR, Cindass JL, Kemp Bohan PM, Hickerson AT, Carpenter EL, McCarthy PM, Adams AM, Vreeland TJ, Clifton GT, Peoples GE. Immunologic and dose dependent effects of rapamycin and its evolving role in chemoprevention. Clin Immunol 2022; 245:109095. [PMID: 35973640 DOI: 10.1016/j.clim.2022.109095] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 08/06/2022] [Indexed: 11/29/2022]
Abstract
Rapamycin inhibits the mechanistic (formally mammalian) target of rapamycin (mTOR), an evolutionarily conserved intracellular kinase that influences activation of growth signaling pathways and immune responses to malignancy. Rapamycin has been found to have both immunosuppressant and immunostimulatory effects throughout the innate and adaptive responses based on the inhibition of mTOR signaling. While the immunosuppressant properties of rapamycin and mTOR inhibition explain rapamycin's success in the prevention of transplant rejection, the immunostimulatory characteristics are likely partially responsible for rapamycin's anti-neoplastic effects. The immunologic response to rapamycin is at least partially dependent on the dose and administration schedule, with lower doses inducing immunostimulation and intermittent dosing promoting immune function while limiting metabolic and immunosuppressant toxicities. In addition to its FDA-approved application in advanced malignancies, rapamycin may be effective as a chemopreventive agent, suspending progression of low-grade cancers, preventing invasive conversion of in situ malignancy, or delaying malignant transformation of established pre-malignant conditions.
Collapse
Affiliation(s)
- Anne E O'Shea
- Department of Surgery, Brooke Army Medical Center, Ft. Sam Houston, TX, USA
| | - Franklin A Valdera
- Department of Surgery, Brooke Army Medical Center, Ft. Sam Houston, TX, USA.
| | - Daniel Ensley
- Department of Urology, Brooke Army Medical Center, Ft. Sam Houston, TX, USA
| | - Todd R Smolinsky
- Department of Surgery, Brooke Army Medical Center, Ft. Sam Houston, TX, USA
| | - Jessica L Cindass
- Department of Surgery, Brooke Army Medical Center, Ft. Sam Houston, TX, USA
| | | | | | | | - Patrick M McCarthy
- Department of Surgery, Brooke Army Medical Center, Ft. Sam Houston, TX, USA
| | - Alexandra M Adams
- Department of Surgery, Brooke Army Medical Center, Ft. Sam Houston, TX, USA
| | - Timothy J Vreeland
- Department of Surgery, Brooke Army Medical Center, Ft. Sam Houston, TX, USA; Department of Surgical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - Guy T Clifton
- Department of Surgery, Brooke Army Medical Center, Ft. Sam Houston, TX, USA; Department of Surgical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | | |
Collapse
|
7
|
The mTOR Signaling Pathway in Multiple Sclerosis; from Animal Models to Human Data. Int J Mol Sci 2022; 23:ijms23158077. [PMID: 35897651 PMCID: PMC9332053 DOI: 10.3390/ijms23158077] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/18/2022] [Accepted: 07/19/2022] [Indexed: 02/04/2023] Open
Abstract
This article recapitulates the evidence on the role of mammalian targets of rapamycin (mTOR) complex pathways in multiple sclerosis (MS). Key biological processes that intersect with mTOR signaling cascades include autophagy, inflammasome activation, innate (e.g., microglial) and adaptive (B and T cell) immune responses, and axonal and neuronal toxicity/degeneration. There is robust evidence that mTOR inhibitors, such as rapamycin, ameliorate the clinical course of the animal model of MS, experimental autoimmune encephalomyelitis (EAE). New, evolving data unravel mechanisms underlying the therapeutic effect on EAE, which include balance among T-effector and T-regulatory cells, and mTOR effects on myeloid cell function, polarization, and antigen presentation, with relevance to MS pathogenesis. Radiologic and preliminary clinical data from a phase 2 randomized, controlled trial of temsirolimus (a rapamycin analogue) in MS show moderate efficacy, with significant adverse effects. Large clinical trials of indirect mTOR inhibitors (metformin) in MS are lacking; however, a smaller prospective, non-randomized study shows some potentially promising radiological results in combination with ex vivo beneficial effects on immune cells that might warrant further investigation. Importantly, the study of mTOR pathway contributions to autoimmune inflammatory demyelination and multiple sclerosis illustrates the difficulties in the clinical application of animal model results. Nevertheless, it is not inconceivable that targeting metabolism in the future with cell-selective mTOR inhibitors (compared to the broad inhibitors tried to date) could be developed to improve efficacy and reduce side effects.
Collapse
|
8
|
Wu W, Chen L, Chen C, Yu L, Zheng J. miRNA-425-5p enhances diffuse large B cell lymphoma growth by targeting PTEN. Transl Cancer Res 2021; 10:4905-4913. [PMID: 35116342 PMCID: PMC8799000 DOI: 10.21037/tcr-21-2394] [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] [Received: 09/29/2021] [Accepted: 11/24/2021] [Indexed: 11/06/2022]
Abstract
BACKGROUND At present, cancer is one of the greatest threats to mankind, and is associated with the highest rates of morbidity and comorbidity. Recently, the advancements in molecular biology have led to an in-depth understanding of the underlying pathophysiology, which may further impact the lead time in the context of early discovery and effective therapy of cancer. Therefore, the present study proposes a better understanding of the role of micro(miR)-425-5p in diffuse large B-cell lymphoma (DLBC). METHODS qRT-PCR was carried out to detect the relevant proteins, miRNA and mRNA RNA gene expression in DLBC cells. The effect of miR-425-5p on DLBC growth was examined by CCK-8 and colony formation assays. The binding relationship between genes was verified by dual-luciferase reporter gene assay. RESULTS We demonstrated how the over-expression of miR-425-5p can lead to increased progression of DLBC by increasing the cellular proliferation rate and colony-forming ability. Additionally, we also found that the expression of miR-425-5p could be significantly inhibited on the basis of phosphatase and tensin homolog (PTEN) signaling pathways. CONCLUSIONS The present study concludes that miR-425-5p is responsible for the oncogenic progression and relapse of DLBC tumorigenesis via PTEN/PI3K signaling, which can thus be effectively used to achieve better therapeutic outcomes.
Collapse
Affiliation(s)
- Weihao Wu
- Department of Hematology, Longyan First Hospital Affiliated to Fujian Medical University, Longyan, China
| | - Longtian Chen
- Department of Hematology, Longyan First Hospital Affiliated to Fujian Medical University, Longyan, China
| | - Congjie Chen
- Department of Hematology, Longyan First Hospital Affiliated to Fujian Medical University, Longyan, China
| | - Lian Yu
- Department of Hematology, Longyan First Hospital Affiliated to Fujian Medical University, Longyan, China
| | - Junqiong Zheng
- Department of Oncology, Longyan First Hospital Affiliated to Fujian Medical University, Longyan, China
| |
Collapse
|
9
|
Tian Y, Ren F, Xu L, Zhang X. Distinct effects of different doses of kaempferol on D‑GalN/LPS‑induced ALF depend on the autophagy pathway. Mol Med Rep 2021; 24:682. [PMID: 34318900 PMCID: PMC8335584 DOI: 10.3892/mmr.2021.12321] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 06/24/2021] [Indexed: 01/16/2023] Open
Abstract
Kaempferol, a flavonoid compound, has various biological functions, such as anti-inflammatory and antitumor activities. Acute liver failure (ALF) is a lethal clinical syndrome that occurs due to severe damage of the liver function. In the present study, the mechanisms underlying the therapeutic effects of kaempferol in ALF were evaluated. An ALF mouse model was established using D-galactosamine (D-GalN; 700 mg/kg)/lipopolysaccharide (LPS; 10 µg/kg). A total of 2 h before the administration of D-GalN/LPS, mice were pretreated with different doses of kaempferol (2.5, 5, 10, 20 and 40 mg/kg), and 6 h after injection of D-GalN/LPS, mice were euthanized. The survival rate, liver function and levels of inflammatory cytokines were assessed. The results demonstrated that kaempferol pretreatment protected hepatocytes from ALF induced by D-GalN/LPS via regulation of the autophagy pathway, both in vivo and in vitro. Pretreatment with a high dose of kaempferol significantly decreased the survival rates and increased severe liver damage; however, pretreatment with a low dose of kaempferol had the opposite effect. Furthermore, pretreatment with a high dose of kaempferol enhanced the levels of proinflammatory cytokines [TNF-α, IL-6, IL-12p40, IL-1β, C-X-C motif chemokine ligand (CXCL)-2, CXCL-10] and markers of the MAPK signaling pathway [phosphorylated (p)-JNK, p-ERK, p-p38], whereas pretreatment with a low dose of kaempferol had the opposite effect. Pretreatment with a high dose of kaempferol decreased autophagy, whereas pretreatment with a low dose of kaempferol increased autophagy in vivo and in vitro. It was also shown that pretreatment with 3-methyadenine or autophagy related 7 small interfering RNA, to inhibit autophagy, partially abrogated the hepatoprotective effects of pretreatment with 5 mg/kg kaempferol in the ALF mouse model. These results demonstrate that the effects of different doses of kaempferol on D-GalN/LPS-induced ALF varies based on the dose, and that kaempferol exerted its effects via regulation of the autophagy pathway.
Collapse
Affiliation(s)
- Yuan Tian
- Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, P.R. China
| | - Feng Ren
- Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, P.R. China
| | - Ling Xu
- Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, P.R. China
| | - Xiangying Zhang
- Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, P.R. China
| |
Collapse
|
10
|
Kong BS, Min SH, Lee C, Cho YM. Mitochondrial-encoded MOTS-c prevents pancreatic islet destruction in autoimmune diabetes. Cell Rep 2021; 36:109447. [PMID: 34320351 PMCID: PMC10083145 DOI: 10.1016/j.celrep.2021.109447] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 05/08/2021] [Accepted: 07/02/2021] [Indexed: 02/07/2023] Open
Abstract
Mitochondria are principal metabolic organelles that are increasingly unveiled as immune regulators. However, it is currently not known whether mitochondrial-encoded peptides modulate T cells to induce changes in phenotype and function. In this study, we found that MOTS-c (mitochondrial open reading frame of the 12S rRNA type-c) prevented autoimmune β cell destruction by targeting T cells in non-obese diabetic (NOD) mice. MOTS-c ameliorated the development of hyperglycemia and reduced islet-infiltrating immune cells. Furthermore, adoptive transfer of T cells from MOTS-c-treated NOD mice significantly decreased the incidence of diabetes in NOD-severe combined immunodeficiency (SCID) mice. Metabolic and genomic analyses revealed that MOTS-c modulated T cell phenotype and function by regulating T cell receptor (TCR)/mTOR complex 1 (mTORC1) signaling. Type 1 diabetes (T1D) patients had a lower serum MOTS-c level than did healthy controls. Furthermore, MOTS-c reduced T cell activation by alleviating T cells from the glycolytic stress in T1D patients, suggesting therapeutic potential. Our findings indicate that MOTS-c regulates the T cell phenotype and suppresses autoimmune diabetes.
Collapse
Affiliation(s)
- Byung Soo Kong
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - Se Hee Min
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - Changhan Lee
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA.
| | - Young Min Cho
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea.
| |
Collapse
|
11
|
Nutma E, Marzin MC, Cillessen SA, Amor S. Autophagy in white matter disorders of the CNS: mechanisms and therapeutic opportunities. J Pathol 2020; 253:133-147. [PMID: 33135781 PMCID: PMC7839724 DOI: 10.1002/path.5576] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/21/2020] [Accepted: 10/26/2020] [Indexed: 12/17/2022]
Abstract
Autophagy is a constitutive process that degrades, recycles and clears damaged proteins or organelles, yet, despite activation of this pathway, abnormal proteins accumulate in neurons in neurodegenerative diseases and in oligodendrocytes in white matter disorders. Here, we discuss the role of autophagy in white matter disorders, including neurotropic infections, inflammatory diseases such as multiple sclerosis, and in hereditary metabolic disorders and acquired toxic‐metabolic disorders. Once triggered due to cell stress, autophagy can enhance cell survival or cell death that may contribute to oligodendrocyte damage and myelin loss in white matter diseases. For some disorders, the mechanisms leading to myelin loss are clear, whereas the aetiological agent and pathological mechanisms are unknown for other myelin disorders, although emerging studies indicate that a common mechanism underlying these disorders is dysregulation of autophagic pathways. In this review we discuss the alterations in the autophagic process in white matter disorders and the potential use of autophagy‐modulating agents as therapeutic approaches in these pathological conditions. © 2020 The Authors. The Journal of Pathology published by John Wiley & Sons, Ltd. on behalf of The Pathological Society of Great Britain and Ireland.
Collapse
Affiliation(s)
- Erik Nutma
- Department of Pathology, Amsterdam UMC, Location VUmc, Amsterdam, The Netherlands
| | - Manuel C Marzin
- Department of Pathology, Amsterdam UMC, Location VUmc, Amsterdam, The Netherlands
| | - Saskia Agm Cillessen
- Department of Pathology, Amsterdam UMC, Location VUmc, Amsterdam, The Netherlands
| | - Sandra Amor
- Department of Pathology, Amsterdam UMC, Location VUmc, Amsterdam, The Netherlands.,Department of Neuroscience and Trauma, Blizard Institute, Barts and the London School of Medicine & Dentistry, Queen Mary University of London, London, UK
| |
Collapse
|
12
|
Impact of Exercise on Immunometabolism in Multiple Sclerosis. J Clin Med 2020; 9:jcm9093038. [PMID: 32967206 PMCID: PMC7564219 DOI: 10.3390/jcm9093038] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 09/15/2020] [Accepted: 09/18/2020] [Indexed: 02/06/2023] Open
Abstract
Multiple Sclerosis (MS) is a chronic, autoimmune condition characterized by demyelinating lesions and axonal degradation. Even though the cause of MS is heterogeneous, it is known that peripheral immune invasion in the central nervous system (CNS) drives pathology at least in the most common form of MS, relapse-remitting MS (RRMS). The more progressive forms’ mechanisms of action remain more elusive yet an innate immune dysfunction combined with neurodegeneration are likely drivers. Recently, increasing studies have focused on the influence of metabolism in regulating immune cell function. In this regard, exercise has long been known to regulate metabolism, and has emerged as a promising therapy for management of autoimmune disorders. Hence, in this review, we inspect the role of key immunometabolic pathways specifically dysregulated in MS and highlight potential therapeutic benefits of exercise in modulating those pathways to harness an anti-inflammatory state. Finally, we touch upon current challenges and future directions for the field of exercise and immunometabolism in MS.
Collapse
|
13
|
Wetzel LA, Hurtado M, MacDowell Kaswan ZA, McCusker RH, Steelman AJ. Deletion of indoleamine 2,3 dioxygenase (Ido)1 but not Ido2 exacerbates disease symptoms of MOG 35-55-induced experimental autoimmune encephalomyelitis. Brain Behav Immun Health 2020; 7:100116. [PMID: 34589873 PMCID: PMC8474387 DOI: 10.1016/j.bbih.2020.100116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 07/23/2020] [Indexed: 12/02/2022] Open
Abstract
Multiple sclerosis (MS) is an autoimmune disease of the central nervous system (CNS) with pathological features of inflammation, demyelination, and neurodegeneration. Several lines of evidence suggest that the enzymes indoleamine 2,3-dioxygenase (Ido)1 and/or Ido2 influences susceptibility to autoimmune diseases. Deletion of Ido1 exacerbates experimental autoimmune encephalomyelitis (EAE) an animal model of MS. However, no data exist on the role of Ido2 in the pathogenesis of EAE. We investigated whether deletion of Ido2 affected the pathogenesis of EAE. Temporal expression of interferon gamma (Ifng), Ido1 variants, Ido2 variants, as well as genes encoding enzymes of the kynurenine pathway in the spleen and spinal cord of C57BL/6 mice with or without EAE were determined by RT-qPCR. Moreover, EAE was induced in C57BL/6, two Ido1 knockout strains (Ido1KO and Ido1TK) and one Ido2 knockout mouse strain (Ido2-/-) and disease monitored by clinical scores and weight change. Performance on the rotarod was performed on days 0, 5, 10 and 15 post induction. The extent of demyelination in the spinal cord was determined after staining with Oil red O. The development of EAE altered gene expression in both the spleen and spinal cord. Deletion of Ido1 exacerbated the clinical symptoms of EAE. In stark contrast, EAE in Ido2-/- mice did not differ clinically or histologically from control mice. These results confirm a protective role for Ido1, on the pathogenesis of MOG35-55-induced EAE in C57BL/6J mice.
Collapse
Affiliation(s)
- Lisa A. Wetzel
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Myrna Hurtado
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Zoe A. MacDowell Kaswan
- Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Robert H. McCusker
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Pathology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Andrew J. Steelman
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Division of Nutritional Sciences, Urbana-Champaign, Urbana, IL, 61801, USA
- Carl R. Woese Institute for Genomic Biology at Urbana-Champaign, Urbana, IL, 61801, USA
| |
Collapse
|
14
|
Kang J, Feng D, Yang F, Tian X, Han W, Jia H. Comparison of rapamycin and methylprednisolone for treating inflammatory muscle disease in a murine model of experimental autoimmune myositis. Exp Ther Med 2020; 20:219-226. [PMID: 32536994 PMCID: PMC7291653 DOI: 10.3892/etm.2020.8716] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 12/09/2019] [Indexed: 01/03/2023] Open
Abstract
Idiopathic inflammatory myopathies (IIMs) are a group of autoimmune inflammatory muscle diseases. Rapamycin has been shown to ameliorate inflammation and improve muscle function in a mouse model of experimental autoimmune myositis (EAM). In the present study, the therapeutic effect of rapamycin was compared with methylprednisolone (MP) on EAM. Mice were injected with myosin for 10 days to induce EAM and were subsequently treated with rapamycin (1.5 mg/kg), MP (40 mg/kg) or placebo (DMSO) for 14 days. The rapamycin-treated group exhibited significantly decreased severe inflammation and improved muscle strength compared with the MP-treated group. The plasma transforming growth factor-β (TGF-β) concentration in the rapamycin-treated group was significantly higher compared with the placebo group. However, both treatment groups exhibited significantly lower plasma interleukin-10 levels compared with the placebo group. Moreover, splenic regulatory T cell frequency in both the rapamycin- and MP-treated animals was significantly lower than that in the animals of the placebo group. Rapamycin showed better immune suppressive effects than MP in this model of EAM, and these effects were likely to be mediated by the TGF-β signaling pathway.
Collapse
Affiliation(s)
- Juan Kang
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xincheng, Xi'an, Shaanxi 710032, P.R. China
| | - Dongyun Feng
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xincheng, Xi'an, Shaanxi 710032, P.R. China
| | - Feng Yang
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xincheng, Xi'an, Shaanxi 710032, P.R. China
| | - Xiaojia Tian
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xincheng, Xi'an, Shaanxi 710032, P.R. China
| | - Wenjuan Han
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xincheng, Xi'an, Shaanxi 710032, P.R. China
| | - Hongge Jia
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xincheng, Xi'an, Shaanxi 710032, P.R. China.,Department of Neurology, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangdong 518034, P.R. China
| |
Collapse
|
15
|
Han J, Tang Y, Zhong M, Wu W. Antitumor effects and mechanisms of 1,25(OH)2D3 in the Pfeiffer diffuse large B lymphoma cell line. Mol Med Rep 2019; 20:5064-5074. [PMID: 31638226 PMCID: PMC6854594 DOI: 10.3892/mmr.2019.10756] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 08/06/2019] [Indexed: 12/12/2022] Open
Abstract
Diffuse large B cell lymphoma (DLBCL) represents the most common subtype of non-Hodgkin lymphoma in China. 1,25-Dihydroxyvitamin D3 [1,25(OH)2D3] has been shown to possess significant antitumor potential and is degraded by 25-hydroxyvitamin D-24-hydroxylase (CYP24A1). In the present study, the role of CYP24A1 and autophagy, and their underlying mechanisms in the anticancer effects of 1,25(OH)2D3 in DLBCL cells, were investigated. It was found that the levels of CYP24A1 in DLBCL lymph node tissues were higher than in hyperplasia lymphadenitis tissue. Moreover, the expression of CYP24A1 was positively associated with the Ann Arbor stage and the International Prognostic Index in patients with DLBCL, and negatively associated with the clinical response to treatment. Patients >60 years of age were found to have a higher level of CYP24A1. 1,25(OH)2D3 inhibited the proliferation of the Pfeiffer DLBCL cell line and increased the G1 phase population of Pfeiffer cells. Rapamycin (RAPA) in combination with 1,25(OH)2D3 increased the G1 phase distribution of Pfeiffer cells. Furthermore, RAPA blocked the increase of CYP24A1 and vitamin D receptor (VDR) expression induced by 1,25(OH)2D3. 1,25(OH)2D3 induced the formation of autophagosomes, increased the expression of autophagy related protein light chain (LC)3II/LC3I and reduced the expression of the ubiquitin binding protein P62. In addition, 1,25(OH)2D3 decreased the phosphorylation of AKT and mammalian target of RAPA (mTOR), and downstream targets eukaryotic translation imitation factor 4E-binding protein 1 and ribosomal protein S6 kinase β-1 in Pfeiffer cells. The results from the present study suggested that CYP24A1 may be a novel prognostic indicator for DLBCL. 1,25(OH)2D3 inhibited proliferation and induced autophagy of Pfeiffer cells. In addition, 1,25(OH)2D3 increased the G1 phase population of Pfeiffer cells. These effects may be mediated by inhibition of the AKT/mTOR/PI3K signaling pathway. RAPA increased the cell cycle arrest induced by 1,25(OH)2D3 by blocking the upregulated expression of CYP24A1 and VDR.
Collapse
Affiliation(s)
- Jing Han
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Yonghong Tang
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Meizuo Zhong
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Wenlin Wu
- Department of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong 510000, P.R. China
| |
Collapse
|
16
|
Zhao J, Wu J, Xu B, Yuan Z, Leng Y, Min J, Lan X, Luo J. Kaempferol promotes bone formation in part via the mTOR signaling pathway. Mol Med Rep 2019; 20:5197-5207. [PMID: 31638215 PMCID: PMC6854588 DOI: 10.3892/mmr.2019.10747] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 07/09/2019] [Indexed: 12/27/2022] Open
Abstract
Previous research indicates that kaempferol (Kae) promotes osteogenesis, but its underlying mechanism of action remains unclear. The present study hypothesized that the osteogenic effects of Kae were mediated through mammalian target of rapamycin (mTOR). To validate this hypothesis, bone marrow mesenchymal stem cells (BMSCs) from ovariectomized (OVX) rats were differentiated into osteoblasts. The bone mineral density and bone microarchitecture of the OVX rats was measured in vivo, while osteogenesis was evaluated in vitro via Alizarin Red S staining and alkaline phosphatase activity measurements in cultured BMSCs. The levels of phosphorylated eukaryotic translation initiation factor 4E‑binding protein 1 (p‑4E/BP1) and phosphorylated ribosomal protein S6 kinase B1 (p‑S6K), and the expression of Runt‑related transcription factor 2 and Osterix, were concurrently quantified by western blot analysis. The data suggested that Kae prevented OVX‑induced osteoporosis in rats by promoting osteoblastogenesis. Furthermore, treatment with Kae in rat BMSCs enhanced mineralization, elevated ALP activity, increased the expression levels of Runx‑2 and Osterix and increased the levels of p‑S6K and decreased the levels of p‑4E/BP1 and, consistent with its ability to promote osteoblast differentiation. In contrast, treatment with rapamycin, an mTOR inhibitor, produced the opposite phenotype. Taken together, these data suggested that the protective effects of Kae in BMSCs and in the OVX rat model resulted from the induction of osteogenesis via mTOR signaling, or at least partially via the regulation of downstream effectors of the mTOR pathway.
Collapse
Affiliation(s)
- Jing Zhao
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330000, P.R. China
| | - Jue Wu
- Laboratory of Translational Medicine, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Binwu Xu
- Department of Orthopedics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330000, P.R. China
| | - Zhen Yuan
- Regeneration and Rehabilitation Engineering Research Institute on Bone and Nerve of Jiangxi, Nanchang, Jiangxi 330000, P.R. China
| | - Yu Leng
- Department of Emergency, The First People's Hospital of Jiujiang City, Jiujiang, Jiangxi 332000, P.R. China
| | - Jun Min
- Department of Rehabilitation, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China
| | - Xiaoyong Lan
- Department of Orthopedics, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China
| | - Jun Luo
- Regeneration and Rehabilitation Engineering Research Institute on Bone and Nerve of Jiangxi, Nanchang, Jiangxi 330000, P.R. China
| |
Collapse
|
17
|
Lombardo SD, Mazzon E, Basile MS, Campo G, Corsico F, Presti M, Bramanti P, Mangano K, Petralia MC, Nicoletti F, Fagone P. Modulation of Tetraspanin 32 (TSPAN32) Expression in T Cell-Mediated Immune Responses and in Multiple Sclerosis. Int J Mol Sci 2019; 20:ijms20184323. [PMID: 31487788 PMCID: PMC6770290 DOI: 10.3390/ijms20184323] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 08/30/2019] [Indexed: 01/25/2023] Open
Abstract
Tetraspanins are a conserved family of proteins involved in a number of biological processes including, cell–cell interactions, fertility, cancer metastasis and immune responses. It has previously been shown that TSPAN32 knockout mice have normal hemopoiesis and B-cell responses, but hyperproliferative T cells. Here, we show that TSPAN32 is expressed at higher levels in the lymphoid lineage as compared to myeloid cells. In vitro activation of T helper cells via anti-CD3/CD28 is associated with a significant downregulation of TSPAN32. Interestingly, engagement of CD3 is sufficient to modulate TSPAN32 expression, and its effect is potentiated by costimulation with anti-CD28, but not anti-CTLA4, -ICOS nor -PD1. Accordingly, we measured the transcriptomic levels of TSPAN32 in polarized T cells under Th1 and Th2 conditions and TSPAN32 resulted significantly reduced as compared with unstimulated cells. On the other hand, in Treg cells, TSPAN32 underwent minor changes upon activation. The in vitro data were finally translated into the context of multiple sclerosis (MS). Encephalitogenic T cells from Myelin Oligodendrocyte Glycoprotein (MOG)-Induced Experimental Autoimmune Encephalomyelitis (EAE) mice showed significantly lower levels of TSPAN32 and increased levels of CD9, CD53, CD82 and CD151. Similarly, in vitro-activated circulating CD4 T cells from MS patients showed lower levels of TSPAN32 as compared with cells from healthy donors. Overall, these data suggest an immunoregulatory role for TSPAN32 in T helper immune response and may represent a target of future immunoregulatory therapies for T cell-mediated autoimmune diseases.
Collapse
Affiliation(s)
- Salvo Danilo Lombardo
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy
| | - Emanuela Mazzon
- IRCCS Centro Neurolesi Bonino Pulejo, C.da Casazza, 98124 Messina, Italy
| | - Maria Sofia Basile
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy
| | - Giorgia Campo
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy
| | - Federica Corsico
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy
| | - Mario Presti
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy
| | - Placido Bramanti
- IRCCS Centro Neurolesi Bonino Pulejo, C.da Casazza, 98124 Messina, Italy
| | - Katia Mangano
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy
| | | | - Ferdinando Nicoletti
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy.
| | - Paolo Fagone
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy
| |
Collapse
|
18
|
The role of miRNAs in the invasion and metastasis of cervical cancer. Biosci Rep 2019; 39:BSR20181377. [PMID: 30833362 PMCID: PMC6418402 DOI: 10.1042/bsr20181377] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 02/18/2019] [Accepted: 03/01/2019] [Indexed: 12/13/2022] Open
Abstract
Cervical cancer (CC) with early metastasis of the primary tumor results in poor prognosis and poor therapeutic outcomes. MicroRNAs (miRNAs) are small, noncoding RNA molecules that play a substantial role in regulating gene expression post-transcriptionally and influence the development and progression of tumors. Numerous studies have discovered that miRNAs play significant roles in the invasion and metastasis of CC by affecting specific pathways, including Notch, Wnt/β-catenin, and phosphoinositide-3 kinase (PI3K)-Akt pathways. miRNAs also effectively modulate the process of epithelial–mesenchymal transition. Many studies provide new insights into the role of miRNAs and the pathogenesis of metastatic CC. In this review, we will offer an overview and update of our present understanding of the potential roles of miRNAs in metastatic CC.
Collapse
|
19
|
Han T, Wu N, Wang Y, Shen W, Zou J. miR‑16‑2‑3p inhibits cell proliferation and migration and induces apoptosis by targeting PDPK1 in maxillary primordium mesenchymal cells. Int J Mol Med 2019; 43:1441-1451. [PMID: 30664182 PMCID: PMC6365086 DOI: 10.3892/ijmm.2019.4070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 01/16/2019] [Indexed: 12/19/2022] Open
Abstract
MicroRNAs (miRNAs) post-transcriptionally regulate gene expression by targeting the 3′ untranslated region (UTR) of target genes, and serve diverse roles in cell proliferation, differentiation and apoptosis. However, the association between miR-16-2-3p and 3-phosphoinositide-dependent protein kinase-1 (PDPK1) in nonsyndromic cleft lip (NSCL) remains unclear. In the present study, a luciferase activity assay indicated that miR-16-2-3p negatively regulated PDPK1 in maxillary primordium mesenchymal cells (MPMCs). In addition, it was confirmed that the expression levels of miR-16-2-3p was markedly increased in cleft lip tissues compared with those in adjacent normal lip tissues. A negative correlation between miR-16-2-3p and PDPK1 in cleft lip tissues was observed. Furthermore, miR-16-2-3p inhibited cell proliferation and migration, and induced apoptosis of MPMCs via repressing PDPK1. Finally, miR-16-2-3p exerted its suppressive role in MPMCs by inhibiting the PDPK1/protein kinase B signaling pathway. These results indicate that miR-16-2-3p may inhibit cell proliferation and migration, and promote apoptosis in MPMCs through repression of PDPK1 and may be a potential target for future clinical prevention and treatment of NSCL.
Collapse
Affiliation(s)
- Tao Han
- Department of Burns and Plastic Surgery, Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu 210008, P.R. China
| | - Ni Wu
- Department of Burns and Plastic Surgery, Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu 210008, P.R. China
| | - Youjing Wang
- Department of Burns and Plastic Surgery, Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu 210008, P.R. China
| | - Weimin Shen
- Department of Burns and Plastic Surgery, Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu 210008, P.R. China
| | - Jijun Zou
- Department of Burns and Plastic Surgery, Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu 210008, P.R. China
| |
Collapse
|
20
|
Mesenchymal stem cell-based therapy for autoimmune diseases: emerging roles of extracellular vesicles. Mol Biol Rep 2019; 46:1533-1549. [PMID: 30623280 DOI: 10.1007/s11033-019-04588-y] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 01/03/2019] [Indexed: 02/07/2023]
Abstract
In autoimmune disease body's own immune system knows healthy cells as undesired and foreign cells. Over 80 types of autoimmune diseases have been recognized. Currently, at clinical practice, treatment strategies for autoimmune disorders are based on relieving symptoms and preventing difficulties. In other words, there is no effective and useful therapy up to now. It has been well-known that mesenchymal stem cells (MSCs) possess immunomodulatory effects. This strongly suggests that MSCs might be as a novel modality for treatment of autoimmune diseases. Supporting this notion a few preclinical and clinical studies indicate that MSCs ameliorate autoimmune disorders. Interestingly, it has been found that the beneficial effects of MSCs in autoimmune disorders are not relying only on direct cell-to-cell communication but on their capability to produce a broad range of paracrine factors including growth factors, cytokines and extracellular vehicles (EVs). EVs are multi-signal messengers that play a serious role in intercellular signaling through carrying cargo such as mRNA, miRNA, and proteins. Numerous studies have shown that MSC-derived EVs are able to mimic the effects of the cell of origin on immune cells. In this review, we discuss the current studies dealing with MSC-based therapies in autoimmune diseases and provide a vision and highlight in order to introduce MSC-derived EVs as an alternative and emerging modality for autoimmune disorders.
Collapse
|
21
|
Shi Y, Lin H, Cao J, Cui C. Botulinum toxin type A induces protective autophagy in human dermal microvascular endothelial cells exposed to an in vitro model of ischemia/reperfusion injury. Exp Ther Med 2018; 16:4379-4386. [PMID: 30542387 PMCID: PMC6257827 DOI: 10.3892/etm.2018.6741] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 06/29/2018] [Indexed: 11/10/2022] Open
Abstract
Botulinum toxin type A (BTXA) has been reported to increase the survival of ischemic skin flaps; however, the exact mechanism underlying this effect remains unclear and needs to be further established. The present study aimed to elucidate whether autophagy caused by BTXA functions as a protection mechanism and to identify the mechanisms of its regulation by BTXA in human dermal microvascular endothelial cells (HDMECs) subjected to hypoxia/reoxygenation (H/R)-induced injury. HDMECs were harvested from the upper eyelid tissues of female blepharoplasty patients. HDMECs were exposed to BTXA treatment for 12 h and then subjected to hypoxia for 8 h, followed by reoxygenation for 24 h. Chloroquine diphosphate salt (CQ) was used as an autophagy inhibitor. H/R led to extreme injury to the HDMECs as indicated by the rise in the apoptosis rate, which was significantly attenuated by BTXA pretreatment. The outcomes demonstrated that H/R caused autophagy, as evidenced by a higher type II/type I ratio of light chain 3 (LC3), increased expression of Beclin-1 and increased autophagosome formation. BTXA enhanced autophagy and attenuated apoptosis in a dose-dependent manner, whereas CQ attenuated the BTXA antiapoptotic effects and inhibited the formation of autophagolysosomes, which caused clustering of the LC3-II in cells. In conclusion, autophagy promoted by BTXA serves as a potential protective effect on ischemia/reperfusion injury.
Collapse
Affiliation(s)
- Yanyu Shi
- Department of Plastic and Reconstructive Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, P.R. China
| | - Huang Lin
- Department of Plastic and Reconstructive Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, P.R. China
| | - Jiankun Cao
- Department of Plastic and Reconstructive Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, P.R. China
| | - Chao Cui
- Department of Plastic and Reconstructive Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, P.R. China
| |
Collapse
|
22
|
Sugimoto N, Katakura M, Matsuzaki K, Sumiyoshi E, Yachie A, Shido O. Chronic administration of theobromine inhibits mTOR signal in rats. Basic Clin Pharmacol Toxicol 2018; 124:575-581. [PMID: 30451374 DOI: 10.1111/bcpt.13175] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 11/12/2018] [Indexed: 12/23/2022]
Abstract
Theobromine is a caffeine derivative and the primary methylxanthine in Theobroma cacao. We have shown previously that theobromine inhibits the Akt-mammalian target of rapamycin (mTOR) signal in vitro. In this study, we investigated whether orally administered theobromine could inhibit mTOR activity in rats. mTOR is phosphorylated by Akt. Thus, the level of phosphorylated mTOR was used as an index of mTOR activity. Male Wistar rats were divided into two groups. The control group (CN) was fed a normal diet, while the theobromine group (TB) was fed a diet supplemented with 0.05% theobromine for 40 days. We measured body-weights and tissue weights, food and water intake, blood count, concentrations of theobromine in the plasma, liver and brain, and the levels of phosphorylated mTOR in the liver and brain. Orally administered theobromine did not affect the body-weights and tissue weights, food and water intake, and blood count as determined by comparison with levels in rats that were fed standard chow. Theobromine was detected in the plasma, liver and brain obtained from TB rats, but was not detected in tissues obtained from CN rats. The phosphorylated mTOR levels in the liver and brain were significantly lower in TB rats than in CN rats. The results suggest that oral theobromine inhibits mTOR signalling in vivo.
Collapse
Affiliation(s)
- Naotoshi Sugimoto
- Department of Physiology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan.,Department of Environmental Physiology, School of Medicine, Shimane University, Izumo, Japan.,Department of Pediatrics, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Masanori Katakura
- Department of Environmental Physiology, School of Medicine, Shimane University, Izumo, Japan.,Department of Nutritional Physiology, Faculty of Pharmaceutical Sciences, Josai University, Sakado, Japan
| | - Kentaro Matsuzaki
- Department of Environmental Physiology, School of Medicine, Shimane University, Izumo, Japan
| | - Eri Sumiyoshi
- Department of Environmental Physiology, School of Medicine, Shimane University, Izumo, Japan
| | - Akihiro Yachie
- Department of Pediatrics, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Osamu Shido
- Department of Environmental Physiology, School of Medicine, Shimane University, Izumo, Japan
| |
Collapse
|
23
|
Bendorius M, Po C, Muller S, Jeltsch-David H. From Systemic Inflammation to Neuroinflammation: The Case of Neurolupus. Int J Mol Sci 2018; 19:E3588. [PMID: 30428632 PMCID: PMC6274746 DOI: 10.3390/ijms19113588] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 11/06/2018] [Accepted: 11/09/2018] [Indexed: 12/17/2022] Open
Abstract
It took decades to arrive at the general consensus dismissing the notion that the immune system is independent of the central nervous system. In the case of uncontrolled systemic inflammation, the relationship between the two systems is thrown off balance and results in cognitive and emotional impairment. It is specifically true for autoimmune pathologies where the central nervous system is affected as a result of systemic inflammation. Along with boosting circulating cytokine levels, systemic inflammation can lead to aberrant brain-resident immune cell activation, leakage of the blood⁻brain barrier, and the production of circulating antibodies that cross-react with brain antigens. One of the most disabling autoimmune pathologies known to have an effect on the central nervous system secondary to the systemic disease is systemic lupus erythematosus. Its neuropsychiatric expression has been extensively studied in lupus-like disease murine models that develop an autoimmunity-associated behavioral syndrome. These models are very useful for studying how the peripheral immune system and systemic inflammation can influence brain functions. In this review, we summarize the experimental data reported on murine models developing autoimmune diseases and systemic inflammation, and we explore the underlying mechanisms explaining how systemic inflammation can result in behavioral deficits, with a special focus on in vivo neuroimaging techniques.
Collapse
Affiliation(s)
- Mykolas Bendorius
- UMR 7242 Biotechnologie et Signalisation Cellulaire, École Supérieure de Biotechnologie de Strasbourg (ESBS), Laboratoire d'Excellence Médalis, Université de Strasbourg/CNRS, 67412 Illkirch, France.
| | - Chrystelle Po
- ICube UMR 7357, Université de Strasbourg/CNRS, Fédération de Médecine Translationnelle de Strasbourg, 67000 Strasbourg, France.
| | - Sylviane Muller
- UMR 7242 Biotechnologie et Signalisation Cellulaire, École Supérieure de Biotechnologie de Strasbourg (ESBS), Laboratoire d'Excellence Médalis, Université de Strasbourg/CNRS, 67412 Illkirch, France.
- University of Strasbourg Institute for Advanced Study (USIAS), 67000 Strasbourg, France.
| | - Hélène Jeltsch-David
- UMR 7242 Biotechnologie et Signalisation Cellulaire, École Supérieure de Biotechnologie de Strasbourg (ESBS), Laboratoire d'Excellence Médalis, Université de Strasbourg/CNRS, 67412 Illkirch, France.
| |
Collapse
|
24
|
Rapamycin and fingolimod modulate Treg/Th17 cells in experimental autoimmune encephalomyelitis by regulating the Akt-mTOR and MAPK/ERK pathways. J Neuroimmunol 2018; 324:26-34. [DOI: 10.1016/j.jneuroim.2018.08.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 08/24/2018] [Accepted: 08/24/2018] [Indexed: 12/31/2022]
|
25
|
Hu S, Xu Y, Meng L, Huang L, Sun H. Curcumin inhibits proliferation and promotes apoptosis of breast cancer cells. Exp Ther Med 2018; 16:1266-1272. [PMID: 30116377 PMCID: PMC6090267 DOI: 10.3892/etm.2018.6345] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 03/29/2018] [Indexed: 12/15/2022] Open
Abstract
Curcumin is a natural compound that appears to be promising for clinical application, as it has been shown in in vitro and in vivo studies to exert antitumor effects by modulating multiple signaling cellular pathways. In the present study, the antitumor effects of curcumin and its mechanism of action were investigated in cultured breast cancer cells. The MTT assay was used to determine the effect of curcumin on breast cancer cell proliferation, flow cytometry was used to detect alterations of the cell cycle, and western blot analysis was used to determine the expression of signaling molecules involved in the cell cycle, proliferation and apoptosis. The results revealed that curcumin significantly inhibited the proliferation of various breast cancer cell lines, such as T47D, MCF7, MDA-MB-231 and MDA-MB-468, with an IC50 at the micromolar level, indicating the potent antitumor activity of curcumin. In-depth study of its mechanism of action revealed that curcumin induced cell cycle arrest at the G2/M phase and decreased the expression of the CDC25 and CDC2 proteins, while increasing the expression of P21. In addition, curcumin inhibited the phosphorylation of protein kinase B (Akt)/mammalian target of rapamycin (mTOR), decreased B-cell lymphoma 2 (BCL2) and promoted BCL-2-associated X protein (BAX) and cleavage of caspase 3, subsequently inducing apoptosis of breast cancer cells. In conclusion, curcumin inhibited the proliferation of breast cancer cells and induced G2/M phase cell cycle arrest and apoptosis, which may be associated with the decrease of CDC25 and CDC2 and increase of P21 protein levels, as well as inhibition of the phosphorylation of Akt/mTOR and induction of the mitochondrial apoptotic pathway. The findings of the present study may provide a basis for the further study of curcumin in the treatment of breast cancer.
Collapse
Affiliation(s)
- Shan Hu
- Department of Breast and Thyroid Surgery, Shaoxing People's Hospital, Shaoxing Hospital of Zhejiang University, Shaoxing, Zhejiang 312000, P.R. China
| | - Yingchun Xu
- Department of Breast and Thyroid Surgery, Shaoxing People's Hospital, Shaoxing Hospital of Zhejiang University, Shaoxing, Zhejiang 312000, P.R. China
| | - Liwei Meng
- Department of Breast and Thyroid Surgery, Shaoxing People's Hospital, Shaoxing Hospital of Zhejiang University, Shaoxing, Zhejiang 312000, P.R. China
| | - Liming Huang
- Department of Breast and Thyroid Surgery, Shaoxing People's Hospital, Shaoxing Hospital of Zhejiang University, Shaoxing, Zhejiang 312000, P.R. China
| | - He Sun
- Clinical Laboratory Center, Shaoxing People's Hospital, Shaoxing Hospital of Zhejiang University, Shaoxing, Zhejiang 312000, P.R. China
| |
Collapse
|
26
|
Fagone P, Mazzon E, Chikovani T, Saraceno A, Mammana S, Colletti G, Mangano K, Bramanti P, Nicoletti F. Decitabine induces regulatory T cells, inhibits the production of IFN-gamma and IL-17 and exerts preventive and therapeutic efficacy in rodent experimental autoimmune neuritis. J Neuroimmunol 2018; 321:41-48. [PMID: 29957387 DOI: 10.1016/j.jneuroim.2018.05.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 05/24/2018] [Accepted: 05/26/2018] [Indexed: 02/01/2023]
Abstract
Guillain-Barré syndrome (GBS) is an immune-mediated acute disorder of the peripheral nervous system. Despite treatment, there is an associated mortality and severe disability in 9 to 17% of the cases. Decitabine (DAC) is a hypomethylating drug used in myelodisplastic syndrome, that has been shown to exert immunomodulatory effects. We have evaluated the effects of DAC in two rodent models of GBS, the Experimental Allergic Neuritis (EAN). Both prophylactic and therapeutic treatment with DAC ameliorated the clinical course of EAN, increasing the numbers of thymic regulatory T cells and reducing the production of proinflammmatory cytokines. Our data suggest the possible use of decitabine for the treatment of GBS.
Collapse
Affiliation(s)
- Paolo Fagone
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Emanuela Mazzon
- IRCCS Centro Neurolesi Bonino Pulejo, Stada Statale 113, C.da Casazza, 98124 Messina, Italy
| | - Tinatin Chikovani
- Department of Immunology, Tbilisi State Medical University, 0186 Tbilisi, Georgia
| | - Andrea Saraceno
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Santa Mammana
- IRCCS Centro Neurolesi Bonino Pulejo, Stada Statale 113, C.da Casazza, 98124 Messina, Italy
| | - Giuseppe Colletti
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Katia Mangano
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Placido Bramanti
- IRCCS Centro Neurolesi Bonino Pulejo, Stada Statale 113, C.da Casazza, 98124 Messina, Italy
| | - Ferdinando Nicoletti
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy.
| |
Collapse
|
27
|
He K, Duan G, Li Y. Dehydroeffusol inhibits viability and epithelial-mesenchymal transition through the Hedgehog and Akt/mTOR signaling pathways in neuroblastoma cells. Eur J Pharmacol 2018; 829:93-101. [PMID: 29665365 DOI: 10.1016/j.ejphar.2018.04.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Revised: 04/09/2018] [Accepted: 04/13/2018] [Indexed: 01/06/2023]
Abstract
Neuroblastoma (NB) is the most predominant extracranial solid tumor of infancy in the world. However, current chemotherapy has limited efficacy for more advanced stages of NB due to acquired chemoresistance or acute toxicity in NB patients. Therefore, effective novel anti-NB drugs are desperately needed. The present study aimed to investigate the effects of dehydroeffusol (DHE), a phenanthrene isolated from J. effuses, on NB cells and its underlying mechanism. The results showed that DHE treatment effectively inhibited NB cell viability in a dose-dependent manner. Moreover, DHE treatment suppressed the epithelial-mesenchymal transition (EMT) process in NB cells by promoting the expression of E-cadherin (E-cad) and restraining the expressions of N-cadherin (N-cad) and vimentin. Also, the invasive capacity and expression of MMP-2 and MMP-9 in NB cells were inhibited by DHE. Furthermore, DHE suppressed the hedgehog (Hh) and the protein kinase B (Akt)/mammalian target of rapamycin (mTOR) signaling pathways in NB cells. In conclusion, DHE effectively inhibited the viability and EMT through inactivating the Hh and the Akt/mTOR signaling pathways in NB cells, providing a novel evidence that DHE may be a potential anti-NB drug candidate.
Collapse
Affiliation(s)
- Kang He
- Department of Neurosurgery, Huaihe Hospital of Henan University, Kaifeng, PR China.
| | - Guoqing Duan
- Department of Neurosurgery, Huaihe Hospital of Henan University, Kaifeng, PR China
| | - Yanyang Li
- Department of Pediatrics, Huaihe Hospital of Henan University, Kaifeng, PR China
| |
Collapse
|
28
|
Preclinical evaluation of the PI3K/Akt/mTOR pathway in animal models of multiple sclerosis. Oncotarget 2018; 9:8263-8277. [PMID: 29492193 PMCID: PMC5823598 DOI: 10.18632/oncotarget.23862] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 11/13/2017] [Indexed: 12/14/2022] Open
Abstract
The PI3K/AKT/mTOR pathway is an intracellular signalling pathway that regulates cell activation. proliferation, metabolism and apoptosis. Increasing body of data suggests that alterations in the PI3K/AKT/mTOR pathway may result in an enhanced susceptibility to autoimmunity. Multiple Sclerosis (MS) is one of the most common chronic inflammatory diseases of the central nervous system leading to demyelination and neurodegeneration. In the current study, we have firstly evaluated in silico the involvement of the mTOR network on the generation and progression of MS and on oligodendrocyte function, making use of currently available whole-genome transcriptomic data. Then, the data generated in silico were subjected to an ex-vivo evaluation. To this aim, the involvement of mTOR was validated on a well-known animal model of MS and in vitro on Th17 cells. Our data indicate that there is a significant involvement of the mTOR network in the etiopathogenesis of MS and that Rapamycin treatment may represent a useful therapeutic approach in this clinical setting. On the other hand, our data showed that a significant involvement of the mTOR network could be observed only in the early phases of oligodendrocyte maturation, but not in the maturation process of adult oligodendrocytes and in the process of remyelination following demyelinating injury. Overall, our study suggests that targeting the PI3K/mTOR pathway, although it may not be a useful therapeutic approach to promote remyelination in MS patients, it can be exploited to exert immunomodulation, preventing/delaying relapses, and to treat MS patients in order to slow down the progression of disability.
Collapse
|
29
|
Liu Y, Sun L, Chen W, Chuai J, Shang Y, Zhang D, Fu B, Tian H, Jiang S. Combined treatment with simvastatin and rapamycin attenuates cardiac allograft rejection through the regulation of T helper 17 and regulatory T cells. Exp Ther Med 2017; 15:1941-1949. [PMID: 29434788 PMCID: PMC5776515 DOI: 10.3892/etm.2017.5635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 07/07/2017] [Indexed: 12/11/2022] Open
Abstract
Allograft rejection is an important issue post cardiac transplantation. In order to investigate the effect of combined treatment with simvastatin and rapamycin on allograft rejection, a cardiac transplantation rat model was employed in the present study. The survival time of rats following cardiac transplantation was recorded, while histopathological alterations were assessed by hematoxylin and eosin staining. The levels of transcription factors were measured by reverse transcription-quantitative polymerase chain reaction. In addition, the levels of CD4+ interleukin (IL)-17+ cells and CD4+ forkhead box P3 (FOXP3)+ cells in the allografts and CD4+ T cells and CD8+ T cells in the spleens were detected by flow cytometry. The results of the current study demonstrated that, following treatment with simvastatin and rapamycin, the survival time of model rats was prolonged, and the histopathological damage was attenuated. Treatment with simvastatin and rapamycin also led to decreased retinoic acid receptor-related orphan receptor γt (RORγt) level, increased FOXP3 level, reduced levels of CD4+IL-17+, CD4+ T and CD8+ T cells, and increased level of CD4+FOXP3+ cells. In conclusion, the current study observed that simvastatin and rapamycin performed a synergistic effect to reduce cardiac transplantation rejection. Thus, combined therapy of simvastatin and rapamycin may be a promising adjuvant therapy to reduce rejection post cardiac transplantation.
Collapse
Affiliation(s)
- Yingjie Liu
- Department of Cardiovascular Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Lu Sun
- Department of Cardiovascular Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Wei Chen
- Department of Cardiovascular Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Junbo Chuai
- Department of Cardiovascular Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Yu Shang
- Department of Respiratory Medicine, Harbin First Hospital, Harbin, Heilongjiang 150010, P.R. China
| | - Dongyang Zhang
- Department of Cardiovascular Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Bicheng Fu
- Department of Cardiovascular Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Hai Tian
- Department of Cardiovascular Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Shulin Jiang
- Department of Cardiovascular Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| |
Collapse
|
30
|
Feng X, Lin Z, Sun W, Hollinger MK, Desierto MJ, Keyvanfar K, Malide D, Muranski P, Chen J, Young NS. Rapamycin is highly effective in murine models of immune-mediated bone marrow failure. Haematologica 2017; 102:1691-1703. [PMID: 28729300 PMCID: PMC5622853 DOI: 10.3324/haematol.2017.163675] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 07/12/2017] [Indexed: 12/14/2022] Open
Abstract
Acquired aplastic anemia, the prototypical bone marrow failure disease, is characterized by pancytopenia and marrow hypoplasia. Most aplastic anemia patients respond to immunosuppressive therapy, usually with anti-thymocyte globulin and cyclosporine, but some relapse on cyclosporine withdrawal or require long-term administration of cyclosporine to maintain blood counts. In this study, we tested efficacy of rapamycin as a new or alternative treatment in mouse models of immune-mediated bone marrow failure. Rapamycin ameliorated pancytopenia, improved bone marrow cellularity, and extended animal survival in a manner comparable to the standard dose of cyclosporine. Rapamycin effectively reduced Th1 inflammatory cytokines interferon-γ and tumor necrosis factor-α, increased the Th2 cytokine interleukin-10, stimulated expansion of functional regulatory T cells, eliminated effector CD8+ T cells (notably T cells specific to target cells bearing minor histocompatibility antigen H60), and preserved hematopoietic stem and progenitor cells. Rapamycin, but not cyclosporine, reduced the proportion of memory and effector T cells and maintained a pool of naïve T cells. Cyclosporine increased cytoplasmic nuclear factor of activated T-cells-1 following T-cell receptor stimulation, whereas rapamycin suppressed phosphorylation of two key signaling molecules in the mammalian target of rapamycin pathway, S6 kinase and protein kinase B. In summary, rapamycin was an effective therapy in mouse models of immune-mediated bone marrow failure, acting through different mechanisms to cyclosporine. Its specific expansion of regulatory T cells and elimination of clonogenic CD8+ effectors support its potential clinical utility in the treatment of aplastic anemia.
Collapse
Affiliation(s)
- Xingmin Feng
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Zenghua Lin
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA.,Department of Hematology, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Wanling Sun
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA.,Department of Hematology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Maile K Hollinger
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Marie J Desierto
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Keyvan Keyvanfar
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Daniela Malide
- Light Microscopy Core Facility, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Pawel Muranski
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Jichun Chen
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Neal S Young
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| |
Collapse
|
31
|
Rapamycin Ameliorates Experimental Autoimmune Encephalomyelitis by Suppressing the mTOR-STAT3 Pathway. Neurochem Res 2017; 42:2831-2840. [DOI: 10.1007/s11064-017-2296-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 09/15/2016] [Indexed: 10/19/2022]
|
32
|
Feng X, Hou H, Zou Y, Guo L. Defective autophagy is associated with neuronal injury in a mouse model of multiple sclerosis. Bosn J Basic Med Sci 2017; 17:95-103. [PMID: 28086065 DOI: 10.17305/bjbms.2017.1696] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 01/09/2017] [Accepted: 11/15/2016] [Indexed: 01/08/2023] Open
Abstract
Neurodegeneration, along with inflammatory demyelination, is an important component of multiple sclerosis (MS) pathogenesis. Autophagy is known to play a pivotal role in neuronal homeostasis and is implicated in several neurodegenerative disorders. However, whether autophagy is involved in the mechanisms of neuronal damage during MS remains to be investigated. Experimental autoimmune encephalomyelitis (EAE), an in vivo model of MS, was induced in female C57BL/6 mice by immunization with myelin oligodendrocyte glycoprotein p35-55. After that, autophagic flux in the spinal cord of mice was evaluated by detection of LC3-II and Beclin1 protein expressions. EAE mice were then administered with rapamycin and 3-methyladenine (3-MA) for 10 days. Afterward, the changes in LC3-II, Beclin1, and p62 expression, number of infiltrated inflammatory cells, demyelinated lesion area, and neuronal damage, as well as clinical scores, were assessed. Further, apoptotic cell rate and apoptosis-related protein expressions were monitored. We observed an impaired autophagic flux and increased neuronal damage in the spinal cords of EAE mice. We also found that rapamycin, an autophagy inducer, mitigated EAE-induced autophagy decrease, inflammation, demyelination and neuronal injury, as well as the abnormal clinical score. In addition, rapamycin suppressed cell apoptosis, and decreased Bax/Bcl-2 ratio and cleaved caspase-3 expression. Conversely, the effect of autophagy inhibitor 3-MA on EAE mice resulted in completely opposite results. These results indicated that autophagy deficiency, at least in part, contributed to EAE-induced neuronal injury and that pharmacological modulation of autophagy might be a therapeutic strategy for MS.
Collapse
Affiliation(s)
- Xuedan Feng
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
| | | | | | | |
Collapse
|
33
|
Pai C, Walsh CM, Fruman DA. Context-Specific Function of S6K2 in Th Cell Differentiation. THE JOURNAL OF IMMUNOLOGY 2016; 197:3049-3058. [PMID: 27613697 DOI: 10.4049/jimmunol.1600167] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 08/11/2016] [Indexed: 12/29/2022]
Abstract
The mammalian target of rapamycin (mTOR) is essential for Th cell proliferation and effector differentiation, making the mTOR signaling network an attractive immunomodulatory target for autoimmune-related diseases. Although direct targeting of mTOR complex-1 (mTORC1) with rapamycin can provide clinical benefit, targeting downstream enzymes has the potential to offer more selective immunosuppression. In this study, we evaluated p70 ribosomal protein S6 Kinase 2 (S6K2), a downstream effector of mTORC1, for its role in T cell function and autoimmunity. S6K2 is a direct substrate of mTORC1, with a potential role in Th17 differentiation suggested by biochemical studies. Using a genetic approach with S6K2 knockout mice, we found that S6K2 loss reduces Th17 skewing and increases regulatory T cell differentiation in vitro when cultured in RPMI 1640 media. However, S6K2 was dispensable for Th17 differentiation in IMDM. In an in vivo experimental autoimmune encephalomyelitis model in which rapamycin suppresses disease, S6K2 knockout mice did not exhibit differences in clinical score or Th17 differentiation. These results suggest that S6K2 is dispensable for Th17-driven autoimmunity and highlight how distinct experimental conditions can produce significantly different results in T cell differentiation.
Collapse
Affiliation(s)
- Christine Pai
- Department of Molecular Biology and Biochemistry, Institute for Immunology, University of California, Irvine, Irvine, CA 92697
| | - Craig M Walsh
- Department of Molecular Biology and Biochemistry, Institute for Immunology, University of California, Irvine, Irvine, CA 92697
| | - David A Fruman
- Department of Molecular Biology and Biochemistry, Institute for Immunology, University of California, Irvine, Irvine, CA 92697
| |
Collapse
|
34
|
Azim HA, Kassem L, Treilleux I, Wang Q, El Enein MA, Anis SE, Bachelot T. Analysis of PI3K/mTOR Pathway Biomarkers and Their Prognostic Value in Women with Hormone Receptor-Positive, HER2-Negative Early Breast Cancer. Transl Oncol 2016; 9:114-123. [PMID: 27084427 PMCID: PMC4833894 DOI: 10.1016/j.tranon.2016.01.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 12/28/2015] [Accepted: 01/04/2016] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND: The PI3K/AKT/mTOR pathway alterations have been shown to play significant roles in the development, progression, and metastatic spread of breast cancer. Furthermore, they have been implicated in the process of drug resistance, especially endocrinal therapies. In this study, we aimed to define the correlation between the PI3K mutations and the expression of the phosphorylated forms of different downstream molecules in women with estrogen receptor (ER)–positive, human epidermal growth factor receptor 2–negative (luminal) early breast cancer treated at Cairo university hospitals. METHODS: Next-generation sequencing was used to detect mutations in the PIK3CA hotspots (in exons 9 and 20). Immunohistochemistry was performed on tissue microarray blocks prepared from samples of 35 Egyptian luminal breast cancer patients in the pathology department of Centre Léon Bérard (CLB). The intensity and the percentage of stained tumor cells were integrated to define high versus low biomarker expression. The cytoplasmic and nuclear stainings were graded separately. Patients were followed for a median of 4.7 years (2.1 to 6.9 years). Correlation was done between PI3K mutations and the immunohistochemistry expression of pAKT, LKB1, p4EBP1, and pS6 ribosomal protein (pS6RP) with the clinicopathologic features and disease free survival (DFS) of the patients. RESULTS: Median age at diagnosis was 51.3 years (range, 25 to 82 years). Tumors were larger than 20 mm in 79.2% of the cases, whereas 57.9% had axillary lymph node deposits. Only 12.3% of the patients had SBR grade I tumors, 50.8% had grade II, and 36.8% had grade III. ERs were negative in 6 patients (17%) after pathology review. Thirty-two cases were assessable for LKB1 and pAKT, 33 for p4EBP1 and pS6RP, and 24 for PI3K mutations. Nuclear LKB1, cytoplasmic LKB1, nuclear pAKT, cytoplasmic pAKT, nuclear p4EBP1, and cytoplasmic pS6RP expression was high in 65.6%, 62.5%, 62.5%, 68.8%, 42.4%, and 57.6%, respectively. PIK3CA mutations were found in 7 patients (29.2%). PI3K mutations were correlated with nuclear localization of pAKT (i.e., decreased cytoplasmic pAKT, P = .04; and increased nuclear pAKT, P = .10). There was a tendency toward an inverse correlation between PI3K mutations and the expression of pS6RP (P = .10) and p4EBP1 (P = .19). Nuclear LKB1 expression was a marker of good prognosis. It was associated with smaller tumors (P = .05), more ER (P = .08) and progesteron receptor (PgR) positivity (P = .002). In the Kaplan Meier (KM) model, patients with high nuclear LKB1 had longer DFS (hazard ratio = 0.36; 95% confidence interval, 0.15-1.10; P = .08). Nuclear pAKT high expression also carried a tendency toward longer DFS (hazard ratio = 0.51; 95% confidence interval, 0.11-1.16; P = .13). The expression of p4EBP1, pS6RP, and the PI3K mutational status did not show any prognostic significance in our cohort. CONCLUSION: Among the studied biomarkers, only nuclear expression of LKB1 and pAKT tended to predict better survival in breast cancer patients. PI3K mutation was correlated with the expression of nuclear pAKT but not pS6RP or p4EBP1.
Collapse
Affiliation(s)
- Hamdy A Azim
- Department of Clinical Oncology, Cairo University Hospital, Cairo, Egypt.
| | - Loay Kassem
- Department of Clinical Oncology, Cairo University Hospital, Cairo, Egypt.
| | | | - Qing Wang
- Genomic Platform-Translational Research Laboratory, Centre Léon Bérard, Lyon, France
| | - Mona Abu El Enein
- Department of Clinical Oncology, Cairo University Hospital, Cairo, Egypt
| | - Shady E Anis
- Department of Pathology, Cairo University Hospital, Cairo, Egypt
| | - Thomas Bachelot
- Department of Medical Oncology, Centre Léon Bérard, Lyon, France
| |
Collapse
|
35
|
Togha M, Jahanshahi M, Alizadeh L, Jahromi SR, Vakilzadeh G, Alipour B, Gorji A, Ghaemi A. Rapamycin Augments Immunomodulatory Properties of Bone Marrow-Derived Mesenchymal Stem Cells in Experimental Autoimmune Encephalomyelitis. Mol Neurobiol 2016; 54:2445-2457. [PMID: 26971291 DOI: 10.1007/s12035-016-9840-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 03/04/2016] [Indexed: 12/29/2022]
Abstract
The immunomodulatory and anti-inflammatory properties of bone marrow-derived mesenchymal stem cells (BM-MSCs) have been considered as an appropriate candidate for treatment of autoimmune diseases. Previous studies have revealed that treatment with BM-MSCs may modulate immune responses and alleviate the symptoms in experimental autoimmune encephalomyelitis (EAE) mice, an animal model of multiple sclerosis. Therefore, the present study was designed to examine immunomodulatory effects of BM-MSCs in the treatment of myelin oligodendrocyte glycoprotein (MOG) 35-55-induced EAE in C57BL/6 mice. MSCs were obtained from the bone marrow of C57BL mice, cultured with DMEM/F12, and characterized with flow cytometry for the presence of cell surface markers for BM-MSCs. Following three passages, BM-MSCs were injected intraperitoneally into EAE mice alone or in combination with rapamycin. Immunological and histopathological effects of BM-MSCs and addition of rapamycin to BM-MSCs were evaluated. The results demonstrated that adding rapamycin to BM-MSCs transplantation in EAE mice significantly reduced inflammation infiltration and demyelination, enhanced the immunomodulatory functions, and inhibited progress of neurological impairments compared to BM-MSC transplantation and control groups. The immunological effects of rapamycin and BM-MSC treatments were associated with the inhibition of the Ag-specific lymphocyte proliferation, CD8+ cytolytic activity, and the Th1-type cytokine (gamma-interferon (IFN-γ)) and the increase of Th-2 cytokine (interleukin-4 (IL-4) and IL-10) production. Addition of rapamycin to BM-MSCs was able to ameliorate neurological deficits and provide neuroprotective effects in EAE. This suggests the potential of rapamycin and BM-MSC combined therapy to play neuroprotective roles in the treatment of neuroinflammatory disorders.
Collapse
Affiliation(s)
- Mansoureh Togha
- Iranian Center of Neurological Research, Neuroscience Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehrdad Jahanshahi
- Neuroscience Research Center, Department of Anatomy, Faculty of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | | | - Soodeh Razeghi Jahromi
- Shefa Neuroscience Research Center, Tehran, Iran.,Multiple Sclerosis Research Center-Neuroscience Institute, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Gelareh Vakilzadeh
- School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Bahram Alipour
- Iranian Blood Transfusion Organization Research Center, Tehran, Iran
| | - Ali Gorji
- Shefa Neuroscience Research Center, Tehran, Iran.,Epilepsy Research Center, Klinik und Poliklinik für Neurochirurgie, Department of Neurology, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Amir Ghaemi
- Infectious Diseases Research Center, Department of Microbiology, Golestan University of Medical Sciences, P.O. Box 49175-1141, Gorgan, Iran. .,Department of Virology, Institute Pasteur of Iran, Tehran, Iran.
| |
Collapse
|
36
|
Yuan LF, Li GD, Ren XJ, Nian H, Li XR, Zhang XM. Rapamycin ameliorates experimental autoimmune uveoretinitis by inhibiting Th1/Th2/Th17 cells and upregulating CD4+CD25+ Foxp3 regulatory T cells. Int J Ophthalmol 2015; 8:659-64. [PMID: 26309858 PMCID: PMC4539633 DOI: 10.3980/j.issn.2222-3959.2015.04.03] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 01/15/2015] [Indexed: 12/12/2022] Open
Abstract
AIM To determine the effects of rapamycin on experimental autoimmune uveoretinitis (EAU) and investigate of role of rapamycin on T cell subsets in the disease. METHODS EAU was induced in rats using peptides 1169 to 1191 of the interphotoreceptor binding protein (IRBP). Rapamycin (0.2 mg/kg/d) was administrated by intraperitoneal injection for a consecutive 7d after immunization. Th1/Th2/Th17 cytokines, TGF-β1, and IL-6 produced by lymphocyteswere measured by ELISA, while Th17 cells and CD4+CD25+ regulatory T cells (Tregs) from rat spleen were detected by flow cytometry. RESULTS Intraperitoneal treatment immediately after immunization dramatically ameliorated the clinical course of EAU. Clinical responses were associated with reduced retinal inflammatory cell infiltration and tissue destruction. Rapamycin induced suppression of Th1/Th2/Th17 cytokines, including IFN-γ, IL-2, IL-17, IL-4, and IL-10 release from T lymphocytes of EAU rats, in vitro. Rapamycin also significantly increased TGF-β1 production but had no effect on IL-6 productionof T lymphocytes from EAU rats in vitro. Furthermore, rapamycin decreased the ratio of Th17 cells/CD4+T cells and upregulated Tregs in EAU, as detected by flow cytometry. CONCLUSION Rapamycin effectively interferes with T cell mediated autoimmune uveitis by inhibiting antigen-specific T cell functions and enhancing Tregs in EAU. Rapamycin is a promising new alternative as an adjunct corticosteroid-sparing agent for treating uveitis.
Collapse
Affiliation(s)
- Li-Fei Yuan
- Tianjin Medical University Eye Hospital & Eye Institute, Tianjin 300384, China
- Hebei Eye Hospital, Xingtai 054001, Hebei Province, China
| | - Guang-Da Li
- Tianjin Medical University Eye Hospital & Eye Institute, Tianjin 300384, China
- Linyi People's Hospital, Linyi 276000, Shandong Province, China
| | - Xin-Jun Ren
- Tianjin Medical University Eye Hospital & Eye Institute, Tianjin 300384, China
| | - Hong Nian
- Tianjin Medical University Eye Hospital & Eye Institute, Tianjin 300384, China
| | - Xiao-Rong Li
- Tianjin Medical University Eye Hospital & Eye Institute, Tianjin 300384, China
| | - Xiao-Min Zhang
- Tianjin Medical University Eye Hospital & Eye Institute, Tianjin 300384, China
| |
Collapse
|
37
|
Popovic M, Stanojevic Z, Tosic J, Isakovic A, Paunovic V, Petricevic S, Martinovic T, Ciric D, Kravic-Stevovic T, Soskic V, Kostic-Rajacic S, Shakib K, Bumbasirevic V, Trajkovic V. Neuroprotective arylpiperazine dopaminergic/serotonergic ligands suppress experimental autoimmune encephalomyelitis in rats. J Neurochem 2015; 135:125-38. [PMID: 26083644 DOI: 10.1111/jnc.13198] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 05/26/2015] [Accepted: 06/01/2015] [Indexed: 12/17/2022]
Abstract
Arylpiperazine-based dopaminergic/serotonergic ligands exert neuroprotective activity. We examined the effect of arylpiperazine D2 /5-HT1A ligands, N-{4-[2-(4-phenyl-piperazin-1-yl)-ethyl}-phenyl]-picolinamide (6a) and N-{3-[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-picolinamide (6b), in experimental autoimmune encephalomyelitis (EAE), a model of neuroinflammation. Both compounds (10 mg/kg i.p.) reduced EAE clinical signs in spinal cord homogenate-immunized Dark Agouti rats. Compound 6b was more efficient in delaying the disease onset and reducing the maximal clinical score, which correlated with its higher affinity for D2 and 5-HT1A receptors. The protection was retained if treatment was limited to the effector (from day 8 onwards), but not the induction phase (day 0-7) of EAE. Compound 6b reduced CNS immune infiltration and expression of mRNA encoding the proinflammatory cytokines tumor necrosis factor, IL-6, IL-1, and GM-CSF, TH 1 cytokine IFN-γ, TH 17 cytokine IL-17, as well as the signature transcription factors of TH 1 (T-bet) and TH 17 (RORγt) cells. Arylpiperazine treatment reduced apoptosis and increased the activation of anti-apoptotic mediators Akt and p70S6 kinase in the CNS of EAE animals. The in vitro treatment with 6b protected oligodendrocyte cell line OLN-93 and neuronal cell line PC12 from mitogen-activated normal T cells or myelin basic protein-activated encephalitogenic T cells. In conclusion, arylpiperazine dopaminergic/serotonergic ligands suppress EAE through a direct neuroprotective action and decrease in CNS inflammation. Arylpiperazine dopaminergic/serotonergic ligands reduce neurological symptoms of acute autoimmune encephalomyelitis in rats without affecting the activation of autoreactive immune response, through mechanisms involving a decrease in CNS immune infiltration, as well as direct protection of CNS from immune-mediated damage. These data indicate potential usefulness of arylpiperazine-based compounds in the treatment of neuroinflammatory disorders such as multiple sclerosis.
Collapse
Affiliation(s)
- Marjan Popovic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Zeljka Stanojevic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Jelena Tosic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Aleksandra Isakovic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Verica Paunovic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Belgrade, Serbia
| | | | - Tamara Martinovic
- Institute of Histology and Embryology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Darko Ciric
- Institute of Histology and Embryology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Tamara Kravic-Stevovic
- Institute of Histology and Embryology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | | | | | - Kaveh Shakib
- Division of Surgery & Interventional Science, University College London (UCL), London, UK
| | - Vladimir Bumbasirevic
- Institute of Histology and Embryology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Vladimir Trajkovic
- Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Belgrade, Serbia
| |
Collapse
|
38
|
Betts BC, Sagatys EM, Veerapathran A, Lloyd MC, Beato F, Lawrence HR, Yue B, Kim J, Sebti SM, Anasetti C, Pidala J. CD4+ T cell STAT3 phosphorylation precedes acute GVHD, and subsequent Th17 tissue invasion correlates with GVHD severity and therapeutic response. J Leukoc Biol 2015; 97:807-19. [PMID: 25663681 DOI: 10.1189/jlb.5a1114-532rr] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Th17 cells contribute to severe GVHD in murine bone marrow transplantation. Targeted deletion of the RORγt transcription factor or blockade of the JAK2-STAT3 axis suppresses IL-17 production and alloreactivity by Th17 cells. Here, we show that pSTAT3 Y705 is increased significantly in CD4(+) T cells among human recipients of allogeneic HCT before the onset of Grade II-IV acute GVHD. Examination of target-organ tissues at the time of GVHD diagnosis indicates that the amount of RORγt + Th17 cells is significantly higher in severe GVHD. Greater accumulation of tissue-resident Th17 cells also correlates with the use of MTX- compared with Rapa-based GVHD prophylaxis, as well as a poor therapeutic response to glucocorticoids. RORγt is optimally suppressed by concurrent neutralization of TORC1 with Rapa and inhibition of STAT3 activation with S3I-201, supporting that mTOR- and STAT3-dependent pathways converge upon RORγt gene expression. Rapa-resistant T cell proliferation can be totally inhibited by STAT3 blockade during initial allosensitization. We conclude that STAT3 signaling and resultant Th17 tissue accumulation are closely associated with acute GVHD onset, severity, and treatment outcome. Future studies are needed to validate the association of STAT3 activity in acute GVHD. Novel GVHD prevention strategies that incorporate dual STAT3 and mTOR inhibition merit investigation.
Collapse
Affiliation(s)
- Brian C Betts
- Departments of *Blood and Marrow Transplantation, Immunology, Hematopathology and Laboratory Medicine, Drug Discovery, and Biostatistics, Analytic Microscopy Core, H. Lee Moffitt Cancer Center, Tampa, Florida, USA
| | - Elizabeth M Sagatys
- Departments of *Blood and Marrow Transplantation, Immunology, Hematopathology and Laboratory Medicine, Drug Discovery, and Biostatistics, Analytic Microscopy Core, H. Lee Moffitt Cancer Center, Tampa, Florida, USA
| | - Anandharaman Veerapathran
- Departments of *Blood and Marrow Transplantation, Immunology, Hematopathology and Laboratory Medicine, Drug Discovery, and Biostatistics, Analytic Microscopy Core, H. Lee Moffitt Cancer Center, Tampa, Florida, USA
| | - Mark C Lloyd
- Departments of *Blood and Marrow Transplantation, Immunology, Hematopathology and Laboratory Medicine, Drug Discovery, and Biostatistics, Analytic Microscopy Core, H. Lee Moffitt Cancer Center, Tampa, Florida, USA
| | - Francisca Beato
- Departments of *Blood and Marrow Transplantation, Immunology, Hematopathology and Laboratory Medicine, Drug Discovery, and Biostatistics, Analytic Microscopy Core, H. Lee Moffitt Cancer Center, Tampa, Florida, USA
| | - Harshani R Lawrence
- Departments of *Blood and Marrow Transplantation, Immunology, Hematopathology and Laboratory Medicine, Drug Discovery, and Biostatistics, Analytic Microscopy Core, H. Lee Moffitt Cancer Center, Tampa, Florida, USA
| | - Binglin Yue
- Departments of *Blood and Marrow Transplantation, Immunology, Hematopathology and Laboratory Medicine, Drug Discovery, and Biostatistics, Analytic Microscopy Core, H. Lee Moffitt Cancer Center, Tampa, Florida, USA
| | - Jongphil Kim
- Departments of *Blood and Marrow Transplantation, Immunology, Hematopathology and Laboratory Medicine, Drug Discovery, and Biostatistics, Analytic Microscopy Core, H. Lee Moffitt Cancer Center, Tampa, Florida, USA
| | - Said M Sebti
- Departments of *Blood and Marrow Transplantation, Immunology, Hematopathology and Laboratory Medicine, Drug Discovery, and Biostatistics, Analytic Microscopy Core, H. Lee Moffitt Cancer Center, Tampa, Florida, USA
| | - Claudio Anasetti
- Departments of *Blood and Marrow Transplantation, Immunology, Hematopathology and Laboratory Medicine, Drug Discovery, and Biostatistics, Analytic Microscopy Core, H. Lee Moffitt Cancer Center, Tampa, Florida, USA
| | - Joseph Pidala
- Departments of *Blood and Marrow Transplantation, Immunology, Hematopathology and Laboratory Medicine, Drug Discovery, and Biostatistics, Analytic Microscopy Core, H. Lee Moffitt Cancer Center, Tampa, Florida, USA
| |
Collapse
|
39
|
Abstract
The mammalian target of rapamycin (mTOR), a phosphoinositide-3-kinase-related protein kinase, acts as a rheostat capable of integrating a variety of environmental cues in the form of nutrients, energy, and growth factors to modulate organismal processes and homeostasis. Recently, there is a growing appreciation of mTOR in adaptive immunity for its crucial roles in keeping a proper balance between T cell quiescence and activation. Under steady-state circumstances, mTOR is subtly inhibited by multiple mechanisms to maintain normal T cell homeostasis. Antigen recognition by naïve T cells leads to mTOR activation, which subsequently promotes the differentiation of these cells into distinct effector T cell subsets. This review focuses primarily on the recent literature with respect to the regulatory effects and mechanisms of mTOR signaling in dictating T cell fate, and discusses the therapeutic implications of mTOR modulation in T-cell-mediated autoimmunity.
Collapse
Affiliation(s)
- Yu Liu
- 1School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology, Jinan, P. R. China
| | | | | |
Collapse
|
40
|
Yan S, Ding Y, Tian Y, Lu Z, Wang Y, Zhang Q, Ye Y, Zhou L, Xie H, Chen H, Zheng M, Zheng S. MHC-mismatched mice liver transplantation promotes tumor growth in liver graft. Cancer Lett 2014; 351:162-71. [PMID: 24880081 DOI: 10.1016/j.canlet.2014.05.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2014] [Revised: 04/19/2014] [Accepted: 05/11/2014] [Indexed: 12/18/2022]
Abstract
Liver transplantation is a final therapeutic option for treatment of hepatic malignancies, but local recurrence remains high after surgery. However, the underlying mechanisms of local tumor recurrence are still unknown. We speculated that immunological status of transplanted liver may contribute to the progress of tumor development. CT-26 tumor cells are injected into graft after allogeneic or syngeneic liver transplantation. The growth pattern of tumor and the co-relationship of regulatory T cell and effector T cells in liver graft were observed and investigated at 3d, 6d, 9d and 15d post-transplantation. The Hepatic Replacement Area of tumor in allogeneic grafts was significantly larger than that in syngeneic grafts. The activation of tumor growth in allografts was due to the dysfunction of effector T cells mediated by regulatory T cells in liver graft. Using nude mice model, we further confirmed that regulatory T cells from allograft significantly weaken the function of effector T cells in vivo. Our data has showed that MHC-mismatched mice liver transplantation can promote tumor growth in liver graft. For the first time, we demonstrated that susceptibility to tumor development in liver graft is due to the down-regulation of effector T cells' function mediated by the regulatory T cells.
Collapse
Affiliation(s)
- Sheng Yan
- Division of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Organ Transplantation Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China
| | - Yuan Ding
- Division of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Organ Transplantation Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China
| | - Yang Tian
- Division of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Organ Transplantation Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China
| | - Zhongjie Lu
- Division of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Organ Transplantation Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China
| | - Yan Wang
- Division of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Organ Transplantation Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China
| | - Qiyi Zhang
- Division of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Organ Transplantation Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China
| | - Yufu Ye
- Division of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Organ Transplantation Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China
| | - Lin Zhou
- Division of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Organ Transplantation Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China
| | - Haiyang Xie
- Division of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Organ Transplantation Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China
| | - Hui Chen
- Division of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Organ Transplantation Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China
| | - Minghao Zheng
- Division of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Organ Transplantation Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Centre for Orthopaedic Research, School of Surgery, University of Western Australia, Western Australia 6009, Australia.
| | - Shusen Zheng
- Division of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China; Key Laboratory of Organ Transplantation Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, PR China.
| |
Collapse
|
41
|
Cusick MF, Libbey JE, Trede NS, Fujinami RS. Targeting insulin-like growth factor 1 leads to amelioration of inflammatory demyelinating disease. PLoS One 2014; 9:e94486. [PMID: 24718491 PMCID: PMC3981810 DOI: 10.1371/journal.pone.0094486] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 03/15/2014] [Indexed: 11/18/2022] Open
Abstract
In patients with multiple sclerosis (MS) and in mice with experimental autoimmune encephalomyelitis (EAE), proliferating autoreactive T cells play an important role in the pathogenesis of the disease. Due to the importance of these myelin-specific T cells, these cells have been therapeutic targets in a variety of treatments. Previously we found that Lenaldekar (LDK), a novel small molecule, could inhibit exacerbations in a preclinical model of MS when given at the start of an EAE exacerbation. In those studies, we found that LDK could inhibit human T cell recall responses and murine myelin responses in vitro. In these new studies, we found that LDK could inhibit myelin specific T cell responses through the insulin-like growth factor-1 receptor (IGF-1R) pathway. Alteration of this pathway led to marked reduction in T cell proliferation and expansion. Blocking this pathway could account for the observed decreases in clinical signs and inflammatory demyelinating disease, which was accompanied by axonal preservation. Our data indicate that IGF-1R could be a potential target for new therapies for the treatment of autoimmune diseases where autoreactive T cell expansion is a requisite for disease.
Collapse
Affiliation(s)
- Matthew F. Cusick
- Department of Pathology, University of Utah, Salt Lake City, Utah, United States of America
| | - Jane E. Libbey
- Department of Pathology, University of Utah, Salt Lake City, Utah, United States of America
| | - Nikolaus S. Trede
- Department of Oncological Sciences and Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, United States of America
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, United States of America
| | - Robert S. Fujinami
- Department of Pathology, University of Utah, Salt Lake City, Utah, United States of America
- * E-mail:
| |
Collapse
|
42
|
Rapamycin regulates iTreg function through CD39 and Runx1 pathways. J Immunol Res 2014; 2014:989434. [PMID: 24741640 PMCID: PMC3988749 DOI: 10.1155/2014/989434] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Revised: 02/25/2014] [Accepted: 03/05/2014] [Indexed: 11/24/2022] Open
Abstract
It has been shown that rapamycin is able to significantly increase the expression of FoxP3 and suppress activity in induced Treg (iTreg) cells in vivo and in vitro. CD39 is a newly determined Treg marker that relates to cell suppression. Runx1, a regulator of FoxP3, controls the expression of adenosine deaminase (ADA) gene, which is found recently in the downstream of CD39 pathway in trophoblast cells. Whether rapamycin would influence CD39 pathway and regulate the expression of Runx1 remains to be
determined. The addition of rapamycin to human CD4+ naïve cells in the presence of IL-2, TGF-β promotes the expression of FoxP3. In this paper, we found that CD39 positively correlated with the FoxP3 expression in iTreg cells. Rapamycin induced iTreg cells showed a stronger CD39/Runx1 expression with the enhanced suppressive function. These data suggested that CD39 expression was involved in iTreg generation and the enhanced suppressive ability of rapamycin induced Treg was partly due to Runx1 pathway. We conclude that rapamycin favors CD39/Runx1 expression in human iTreg and provides a novel insight into the mechanisms of iTreg generation enhanced by rapamycin.
Collapse
|
43
|
Lee PH, Puppi M, Schluns KS, Yu-Lee LY, Dong C, Lacorazza HD. The transcription factor E74-like factor 4 suppresses differentiation of proliferating CD4+ T cells to the Th17 lineage. THE JOURNAL OF IMMUNOLOGY 2013; 192:178-88. [PMID: 24259505 DOI: 10.4049/jimmunol.1301372] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The differentiation of CD4(+) T cells into different Th lineages is driven by cytokine milieu in the priming site and the underlying transcriptional circuitry. Even though many positive regulators have been identified, it is not clear how this process is inhibited at transcriptional level. In this study, we report that the E-twenty six (ETS) transcription factor E74-like factor 4 (ELF4) suppresses the differentiation of Th17 cells both in vitro and in vivo. Culture of naive Elf4(-/-) CD4(+) T cells in the presence of IL-6 and TGF-β (or IL-6, IL-23, and IL-1β) resulted in increased numbers of IL-17A-positive cells compared with wild-type controls. In contrast, the differentiation to Th1, Th2, or regulatory T cells was largely unaffected by loss of ELF4. The increased expression of genes involved in Th17 differentiation observed in Elf4(-/-) CD4(+) T cells suggested that ELF4 controls their programming into the Th17 lineage rather than only IL-17A gene expression. Despite normal proliferation of naive CD4(+) T cells, loss of ELF4 lowered the requirement of IL-6 and TGF-β signaling for IL-17A induction in each cell division. ELF4 did not inhibit Th17 differentiation by promoting IL-2 production as proposed for another ETS transcription factor, ETS1. Elf4(-/-) mice showed increased numbers of Th17 cells in the lamina propria at steady state, in lymph nodes after immunization, and, most importantly, in the CNS following experimental autoimmune encephalomyelitis induction, contributing to the increased disease severity. Collectively, our findings suggest that ELF4 restrains Th17 differentiation in dividing CD4(+) T cells by regulating commitment to the Th17 differentiation program.
Collapse
Affiliation(s)
- Ping-Hsien Lee
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX 77030
| | | | | | | | | | | |
Collapse
|
44
|
Beneficial role of rapamycin in experimental autoimmune myositis. PLoS One 2013; 8:e74450. [PMID: 24265670 PMCID: PMC3827074 DOI: 10.1371/journal.pone.0074450] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Accepted: 08/06/2013] [Indexed: 12/23/2022] Open
Abstract
INTRODUCTION We developed an experimental autoimmune myositis (EAM) mouse model of polymyositis where we outlined the role of regulatory T (Treg) cells. Rapamycin, this immunosuppressant drug used to prevent rejection in organ transplantation, is known to spare Treg. Our aim was to test the efficacy of rapamycin in vivo in this EAM model and to investigate the effects of the drug on different immune cell sub-populations. METHODS EAM is induced by 3 injections of myosin emulsified in CFA. Mice received rapamycin during 25 days starting one day before myosin immunization (preventive treatment), or during 10 days following the last myosin immunization (curative treatment). RESULTS Under preventive or curative treatment, an increase of muscle strength was observed with a parallel decrease of muscle inflammation, both being well correlated (R(2) = -0.645, p<0.0001). Rapamycin induced a general decrease in muscle of CD4 and CD8 T cells in lymphoid tissues, but spared B cells. Among T cells, the frequency of Treg was increased in rapamycin treated mice in draining lymph nodes (16.9 ± 2.2% vs. 9.3 ± 1.4%, p<0.001), which were mostly activated regulatory T cells (CD62L(low)CD44(high): 58.1 ± 5.78% vs. 33.1 ± 7%, treated vs. untreated, p<0.001). In rapamycin treated mice, inhibition of proliferation (Ki-67(+)) is more important in effector T cells compared to Tregs cells (p<0.05). Furthermore, during preventive treatment, rapamycin increased the levels of KLF2 transcript in CD44(low) CD62L(high) naive T cell and in CD62L(low) CD44(high) activated T cell. CONCLUSIONS Rapamycin showed efficacy both as curative and preventive treatment in our murine model of experimental myositis, in which it induced an increase of muscle strength with a parallel decrease in muscle inflammation. Rapamycin administration was also associated with a decrease in the frequency of effector T cells, an increase in Tregs, and, when administered as preventive treatment, an upregulation of KFL2 in naive and activated T cells.
Collapse
|
45
|
Ringheim GE, Lee L, Laws-Ricker L, Delohery T, Liu L, Zhang D, Colletti N, Soos TJ, Schroeder K, Fanelli B, Tian N, Arendt CW, Iglesias-Bregna D, Petty M, Ji Z, Qian G, Gaur R, Weinstock D, Cavallo J, Telsinskas J, McMonagle-Strucko K. Teriflunomide attenuates immunopathological changes in the dark agouti rat model of experimental autoimmune encephalomyelitis. Front Neurol 2013; 4:169. [PMID: 24198809 PMCID: PMC3812666 DOI: 10.3389/fneur.2013.00169] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 10/16/2013] [Indexed: 01/13/2023] Open
Abstract
Teriflunomide is an oral disease-modifying therapy recently approved in several locations for relapsing-remitting multiple sclerosis. To gain insight into the effects of teriflunomide, immunocyte population changes were measured during progression of experimental autoimmune encephalomyelitis in Dark Agouti rats. Treatment with teriflunomide attenuated levels of spinal cord-infiltrating T cells, natural killer cells, macrophages, and neutrophils. Teriflunomide also mitigated the disease-induced changes in immune cell populations in the blood and spleen suggesting an inhibitory effect on pathogenic immune responses.
Collapse
Affiliation(s)
- Garth E Ringheim
- Inflammation and Immunology Translational Development, Celgene Corporation , Summit, NJ , USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Li X, Li TT, Zhang XH, Hou LF, Yang XQ, Zhu FH, Tang W, Zuo JP. Artemisinin analogue SM934 ameliorates murine experimental autoimmune encephalomyelitis through enhancing the expansion and functions of regulatory T cell. PLoS One 2013; 8:e74108. [PMID: 24009768 PMCID: PMC3756992 DOI: 10.1371/journal.pone.0074108] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 08/01/2013] [Indexed: 11/19/2022] Open
Abstract
Background Artemisinin analogue SM934 was previously reported to possess immunosuppressive properties. The aim of this study was to determine the effects and the underlying mechanisms of SM934 in murine experimental autoimmune encephalomyelitis (EAE). Methods Female C57BL/6 mice immunized with MOG35–55 were treated with or without SM934, then the clinical scores and other relevant parameters were assessed. Th1, Th17 and regulatory T (Treg) cell profiles were determined through ELISA, qRT-PCR, flow cytometry and BrdU incorporation assay. The effects of SM934 on Th1, Th17 and Treg cells differentiation were explored through intracellular staining and flow cytometry examination. Results In vivo, administration of SM934 significantly inhibited the development of EAE and suppressed the elevation of serum IL-17. Ex vivo, upon antigen-recall stimulation, IL-2, IFN-γ, IL-17 and IL-6 production were decreased, whereas IL-10 and TGF-β production were increased from the splenocytes isolated from SM934-treated mice. Consistently, both flow cytometry and qRT-PCR results showed that SM934 treatment significantly increased the Treg, while strongly suppressed the Th17 and Th1, responses in the peripheral. Furthermore, in the spinal lesion, SM934 treatment dramatically decreased the infiltration of CD4+ T cells, within which the Treg cells percentage was enlarged, whereas the Th17, but not Th1 percentage, was significantly decreased comparing with the vehicle-treated groups. Finally, both BrdU incorporation and in vitro Treg differentiation assays revealed that SM934 treatment could directly promote the expansion of Treg cells in vivo and in vitro. Conclusion Taken together, this study demonstrated that SM934 treatment could ameliorate the murine EAE disease, which might be mediated by inducing Treg differentiation and expansion.
Collapse
Affiliation(s)
- Xin Li
- Laboratory of Immunopharmacology, State Key Laboratory of Drug Research Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People’s Republic of China
| | - Tian-Tian Li
- Laboratory of Immunopharmacology, State Key Laboratory of Drug Research Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People’s Republic of China
| | - Xiao-Hui Zhang
- Laboratory of Immunology and Virology, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Li-Fei Hou
- Laboratory of Immunopharmacology, State Key Laboratory of Drug Research Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People’s Republic of China
| | - Xiao-Qian Yang
- Laboratory of Immunopharmacology, State Key Laboratory of Drug Research Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People’s Republic of China
| | - Feng-Hua Zhu
- Laboratory of Immunopharmacology, State Key Laboratory of Drug Research Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People’s Republic of China
| | - Wei Tang
- Laboratory of Immunopharmacology, State Key Laboratory of Drug Research Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People’s Republic of China
- * E-mail: (JPZ); (WT)
| | - Jian-Ping Zuo
- Laboratory of Immunology and Virology, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
- * E-mail: (JPZ); (WT)
| |
Collapse
|
47
|
Keijzer C, van der Zee R, van Eden W, Broere F. Treg inducing adjuvants for therapeutic vaccination against chronic inflammatory diseases. Front Immunol 2013; 4:245. [PMID: 23970886 PMCID: PMC3747555 DOI: 10.3389/fimmu.2013.00245] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2013] [Accepted: 08/06/2013] [Indexed: 01/21/2023] Open
Abstract
Many existing therapies in autoimmune diseases are based on systemic suppression of inflammation and the observed side effects of these therapies illustrate the pressing need for more specific interventions. Regulatory T-cells (Treg) are pivotal controllers of (auto-aggressive) immune responses and inflammation, and decreased Treg numbers and/or functioning have been associated with autoimmune disease. Therefore, Treg became frequently studied targets for more specific immunotherapy. Especially antigen-specific targeting of Treg would enable local and tailor made interventions, while obviating the negative side effect of general immuno-suppression. Self-antigens that participate in inflammation, irrespective of the etiology of the different autoimmune diseases, are held to be candidate antigens for antigen-specific interventions. Rather than tolerance induction to disease inciting self-antigens, which are frequently unknown, general self-antigens expressed at sites of inflammation would allow targeting of disease independent, but inflammatory-site specific, regulatory mechanisms. Preferably, such self-antigens should be abundantly expressed and up-regulated at the inflammatory-site. In this perspective heat shock proteins (Hsp) have several characteristics that make them highly attractive targets for antigen-specific Treg inducing therapy. The development of an antigen-specific Treg inducing vaccine is a major novel goal in the field of immunotherapy in autoimmune diseases. However, progress is hampered not only by the lack of effective antigens, but also by the fact that other factors such as dose, route, and the presence or absence of an adjuvant, turned out to be critical unknowns, with respect to the effective induction of Treg. In addition, the use of a Treg inducing adjuvant might be required to achieve an effective regulatory response, in the case of ongoing inflammation. Future goals in clinical trials will be the optimization of natural Treg expansion (or the induction of adaptive Treg) without loss of their suppressive function or the concomitant induction of non-regulatory T-cells. Here, we will discuss the potential use of protein/peptide-based vaccines combined with Treg inducing adjuvants for the development of therapeutic vaccines against chronic inflammatory conditions.
Collapse
Affiliation(s)
- Chantal Keijzer
- Immunology, Infectious Diseases and Immunology, Faculty Veterinary Medicine, University Utrecht , Utrecht , Netherlands
| | | | | | | |
Collapse
|
48
|
Procaccini C, Matarese G. Regulatory T cells, mTOR kinase, and metabolic activity. Cell Mol Life Sci 2012; 69:3975-87. [PMID: 22760498 PMCID: PMC11114691 DOI: 10.1007/s00018-012-1058-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Revised: 06/09/2012] [Accepted: 06/12/2012] [Indexed: 02/08/2023]
Abstract
The field that links immunity and metabolism is rapidly expanding. Apparently, non-immunological disorders such as obesity and type 2 diabetes have been linked to immune dysregulation, suggesting that metabolic alterations can be induced by or be a consequence of an altered self-immune tolerance. In this context, a key role is played by signaling systems acting as metabolic "sensors" linking energy/nutritional status to regulatory T (Treg) cell functions. We propose that a dynamic/oscillatory activity of intracellular metabolism, through mTOR modulation, might represent a shift in understanding the molecular mechanisms governing Treg cell tolerance. In particular, the decision between Treg cell proliferation and hyporesponsiveness arises from their ability to probe the extracellular milieu and, modulating the metabolic intracellular signaling, to determine different qualitative and quantitative functional outcomes.
Collapse
Affiliation(s)
- Claudio Procaccini
- Dipartimento di Medicina, Facoltà di Medicina, Università di Salerno, Baronissi Campus, 84081 Baronissi, Salerno Italy
- Laboratorio di Immunologia, Istituto di Endocrinologia e Oncologia Sperimentale, Consiglio Nazionale delle Ricerche (IEOS-CNR), 80131 Naples, Italy
- c/o Dipartimento di Biologia e Patologia Cellulare e Molecolare, Università di Napoli ‘‘Federico II”, 80131 Naples, Italy
| | - Giuseppe Matarese
- Dipartimento di Medicina, Facoltà di Medicina, Università di Salerno, Baronissi Campus, 84081 Baronissi, Salerno Italy
- Laboratorio di Immunologia, Istituto di Endocrinologia e Oncologia Sperimentale, Consiglio Nazionale delle Ricerche (IEOS-CNR), 80131 Naples, Italy
- c/o Dipartimento di Biologia e Patologia Cellulare e Molecolare, Università di Napoli ‘‘Federico II”, 80131 Naples, Italy
| |
Collapse
|
49
|
Dello Russo C, Lisi L, Feinstein DL, Navarra P. mTOR kinase, a key player in the regulation of glial functions: relevance for the therapy of multiple sclerosis. Glia 2012; 61:301-11. [PMID: 23044764 DOI: 10.1002/glia.22433] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Revised: 09/06/2012] [Accepted: 09/11/2012] [Indexed: 12/26/2022]
Abstract
The mammalian target of rapamycin (mTOR) is a serine/threonine protein kinase with a central role in the regulation of cell growth and proliferation, and several intracellular processes, such as mRNA transcription and translation, autophagy and cytoskeletal organization. The relevance of this pathway in the regulation of the immune system is well characterized. mTOR is essential for the proper activation and proliferation of effector T cells, restricts the development of regulatory T cells, and downregulates innate immune responses. Recently, a direct role of mTOR in the modulation of glial functions has also been recognized. Data from our group and others support the notion that mTOR is involved in microglial proinflammatory activation. The kinase regulates several intracellular processes in astrocytes, among which the rate of mRNA degradation of the inducible form of NO synthase. Therefore, the inhibition of mTOR kinase activity in glial cells results in anti-inflammatory actions, suggesting possible beneficial effects of mTOR inhibitors (like rapamycin) in the treatment of inflammatory-based pathologies of the central nervous system. In contrast, mTOR plays an important role in the regulation of oligodendrocyte development and myelination process as well as several neuronal functions, which may limit this therapeutic approach. Nevertheless, as reviewed here, there is robust evidence that rapamycin ameliorates the clinical course of both the relapsing-remitting and the chronic experimental autoimmune encephalomyelitis (EAE), and significantly reduces the hyperalgesia observed before clinical development of EAE. These findings may have important clinical implications for the therapy of multiple sclerosis.
Collapse
Affiliation(s)
- Cinzia Dello Russo
- Institute of Pharmacology, Catholic University Medical School, Rome, Italy.
| | | | | | | |
Collapse
|
50
|
Li Z, Chen L, Niu X, Liu J, Ping M, Li R, Xie X, Guo L. Immunomodulatory synergy by combining atorvastatin and rapamycin in the treatment of experimental autoimmune encephalomyelitis (EAE). J Neuroimmunol 2012; 250:9-17. [DOI: 10.1016/j.jneuroim.2012.05.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 05/05/2012] [Accepted: 05/08/2012] [Indexed: 01/28/2023]
|