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Lan H, Qiu W, Wu J, Hu Z, Zhang X, Zhu L. Formononetin reverses Treg/Th17 imbalance in immune-mediated bone marrow failure mice by regulating the PI3K/Akt signaling pathway. Chin Med 2024; 19:55. [PMID: 38528555 DOI: 10.1186/s13020-024-00919-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 03/11/2024] [Indexed: 03/27/2024] Open
Abstract
BACKGROUND Severe aplastic anemia (SAA) is a syndrome of bone marrow failure which is life-threatening. Recent studies have demonstrated that CD4 + T cell subsets, including T regulatory (Treg) and T helper 17 (Th17) cells, play a pivotal role in the pathogenesis of SAA. Formononetin (FMN) is a natural compound extracted from the traditional Chinese medicine Huangqi, which has the ability to regulate the imbalance of Treg/Th17 cells in some inflammatory diseases. Nevertheless, the therapeutic effect of FMN in SAA has yet to be definitively established. Therefore, the objective of this research was to investigate the effect of FMN on SAA and elucidate its underlying mechanism. METHODS In vivo experiments, the mice were divided into the following five groups: control, model, low-dose FMN, high-dose FMN, and positive control cyclosporine A group. The immune-mediated bone marrow failure (BMF) mouse model was established by the total body X-ray radiation and lymphocyte infusion. After 10 days of continuous administration of FMN, the numbers of Treg/Th17 cells in the bone marrow and spleen were assessed by flow cytometry. The protein expressions of PI3K/Akt pathway in the bone marrow and spleen was assessed by immunohistochemistry and western blotting. In vitro, the impact of FMN on the differentiation of naive CD4 + T cells into Treg cells was investigated by flow cytometry and ELISA. RESULTS In comparison with the control group, the model group showed a reduction in bone marrow nucleated cells, a significant decrease in peripheral blood cells, and an altered CD8 + /CD4 + T cell ratio. These findings indicate the successful establishment of a mouse model of immune-mediated BMF. After FMN treatment, there were the increased levels of red blood cells and hemoglobin. In addition, FMN mitigated the bone marrow destruction and restored the CD8 + /CD4 + T cell ratio. Furthermore, in comparison with the control group, the model group showed the decreased levels of Treg cells and the increased levels of Th17 cells. After FMN treatment, there was a significantly increased number of Treg cells and a decreased number of Th17 cells. Additionally, FMN remarkably down-regulated the expression levels of PI3K and Akt proteins in immune-mediated BMF mice. CONCLUSIONS FMN alleviates immune-mediated BMF by modulating the balance of Treg/Th17 cells through the PI3K/Akt signaling pathway.
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Affiliation(s)
- Huixuan Lan
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
- Traditional Chinese Pharmacological Laboratory, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Wei Qiu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
- Traditional Chinese Pharmacological Laboratory, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Jie Wu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
- Department of Hematology, Hospital of Integrative Chinese and Western Medicine, Southern Medical University, Guangzhou, 510000, China
| | - Zhijing Hu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
- Department of Hematology, Hospital of Integrative Chinese and Western Medicine, Southern Medical University, Guangzhou, 510000, China
| | - Xiaomin Zhang
- International Cancer Center, Shenzhen University Health Science Center, Shenzhen, 518060, China.
- Department of Hematology and Oncology, Shenzhen University General Hospital, Shenzhen, 518060, China.
| | - Lingling Zhu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China.
- Department of Traditional Chinese Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
- Hospital of Integrative Chinese and Western Medicine, Southern Medical University, Guangzhou, 510000, China.
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Serio B, Giudice V, Selleri C. All Roads Lead to Interferon-γ: From Known to Untraveled Pathways in Acquired Aplastic Anemia. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:2170. [PMID: 38138273 PMCID: PMC10744863 DOI: 10.3390/medicina59122170] [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: 11/16/2023] [Revised: 12/08/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023]
Abstract
Bone marrow failure (BMF) syndromes are a heterogeneous group of benign hematological conditions with common clinical features including reduced bone marrow cellularity and peripheral blood cytopenias. Acquired aplastic anemia (AA) is caused by T helper(Th)1-mediated immune responses and cytotoxic CD8+ T cell-mediated autologous immune attacks against hematopoietic stem and progenitor cells (HSPCs). Interferon-γ (IFNγ), tumor necrosis factor-α, and Fas-ligand are historically linked to AA pathogenesis because they drive Th1 and cytotoxic T cell-mediated responses and can directly induce HSPC apoptosis and differentiation block. The use of omics technologies has amplified the amount of data at the single-cell level, and knowledge on AA, and new scenarios, have been opened on "old" point of view. In this review, we summarize the current state-of-art of the pathogenic role of IFNγ in AA from initial findings to novel evidence, such as the involvement of the HIF-1α pathway, and how this knowledge can be translated in clinical practice.
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Affiliation(s)
- Bianca Serio
- Department of Medicine, Surgery, and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (B.S.); (C.S.)
| | - Valentina Giudice
- Department of Medicine, Surgery, and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (B.S.); (C.S.)
- Hematology and Transplant Center, University Hospital “San Giovanni di Dio e Ruggi d’Aragona”, 84131 Salerno, Italy
| | - Carmine Selleri
- Department of Medicine, Surgery, and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (B.S.); (C.S.)
- Hematology and Transplant Center, University Hospital “San Giovanni di Dio e Ruggi d’Aragona”, 84131 Salerno, Italy
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Wang J, Zhou R, Zhong L, Chen Y, Wu X, Huang L, Tian Y, Mo W, Wang S, Liu Y. High-dimensional immune profiling using mass cytometry reveals IL-17A-producing γδ T cells as biomarkers in patients with T-cell-activated idiopathic severe aplastic anemia. Int Immunopharmacol 2023; 125:111163. [PMID: 37976596 DOI: 10.1016/j.intimp.2023.111163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/19/2023] [Accepted: 10/31/2023] [Indexed: 11/19/2023]
Abstract
Severe aplastic anemia (SAA) is a bone marrow failure syndrome characterized by activated T cells. Features of T-cell activation in the pathophysiology of SAA remain unknown. To understand T cell activation states, we investigated the atlas of peripheral immune cells and the secreted cytokine network with single cell mass cytometry analysis. We found decreased γδ T-cell frequencies in all patients with SAA, together with a significantly increased proportion of interleukin (IL)-17A-producing cell subsets. Cytokine network analysis of immune cells showed significant positive relationship between IL and 17A production from immune cells and disease severity of severe aplastic anemia. On separating SAA into two distinct subgroups based on T-cell activation stage, the proportion of γδ T cells tended to decrease in the T-cell-activated SAA group compared with non-T-cell-activated group. And the proportion of IL-17A-producing γδ T cells (γδT17) within γδ T cells was newly found to be significantly higher in the T-cell-activated SAA group, implying that IL-17A production by γδ T cells was associated with T-cell activation. Overall, our study revealed a role of γδT17 cells in mediating autoreactive T-cell activation in SAA and provided a novel diagnostic indicator for monitoring autoreactive T-cell activation status during the progression of aplastic anemia in the clinic.
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Affiliation(s)
- Jianwei Wang
- Department of Hematology, Guangzhou First People's Hospital, the Second Affiliated Hospital of South China University of Technology, Guangzhou, Guangdong 510180, China; Center for Medical Research on Innovation and Translation, Guangzhou First People's Hospital, the Second Affiliated Hospital of South China University of Technology, Guangzhou, Guangdong 510005, China
| | - Ruiqing Zhou
- Department of Hematology, Guangzhou First People's Hospital, the Second Affiliated Hospital of South China University of Technology, Guangzhou, Guangdong 510180, China
| | - Limei Zhong
- Department of Laboratory Medicine, Guangdong Second Provincial General Hospital, Guangzhou, Guangdong 510317, China
| | - Yinchun Chen
- Department of Hematology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Xiaojun Wu
- Department of Hematology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Liping Huang
- Department of Obstetrics and Gynecology, Southern Medical University Nanfang Hospital, Guangzhou, Guangdong 510515, China
| | - Yan Tian
- Department of Anesthesiology, Jiangxi Provincial Children's Hospital, Nanchang, Jiangxi 330000, China
| | - Wenjian Mo
- Department of Hematology, Guangzhou First People's Hospital, the Second Affiliated Hospital of South China University of Technology, Guangzhou, Guangdong 510180, China
| | - Shunqing Wang
- Department of Hematology, Guangzhou First People's Hospital, the Second Affiliated Hospital of South China University of Technology, Guangzhou, Guangdong 510180, China
| | - Yufeng Liu
- Department of Hematology, Guangzhou First People's Hospital, the Second Affiliated Hospital of South China University of Technology, Guangzhou, Guangdong 510180, China; Center for Medical Research on Innovation and Translation, Guangzhou First People's Hospital, the Second Affiliated Hospital of South China University of Technology, Guangzhou, Guangdong 510005, China.
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Enriquez J, McDaniel Mims B, Stroever S, dos Santos AP, Jones-Hall Y, Furr KL, Grisham MB. Influence of Housing Temperature and Genetic Diversity on Allogeneic T Cell-Induced Tissue Damage in Mice. PATHOPHYSIOLOGY 2023; 30:522-547. [PMID: 37987308 PMCID: PMC10661280 DOI: 10.3390/pathophysiology30040039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 11/12/2023] [Accepted: 11/18/2023] [Indexed: 11/22/2023] Open
Abstract
The objective of this study was to determine how housing temperature and genetic diversity affect the onset and severity of allogeneic T cell-induced tissue damage in mice subjected to reduced intensity conditioning (RIC). We found that adoptive transfer of allogeneic CD4+ T cells from inbred donors into sub-lethally irradiated inbred recipients (I→I) housed at standard housing temperatures (ST; 22-24 °C) induced extensive BM and spleen damage in the absence of injury to any other tissue. Although engraftment of T cells in RIC-treated mice housed at their thermo-neutral temperature (TNT; 30-32 °C) also developed similar BM and spleen damage, their survival was markedly and significantly increased when compared to their ST counterparts. In contrast, the adoptive transfer of allogeneic T cells into RIC-treated outbred CD1 recipients failed to induce disease in any tissue at ST or TNT. The lack of tissue damage was not due to defects in donor T cell trafficking to BM or spleen but was associated with the presence of large numbers of B cells and myeloid cells within these tissues that are known to contain immunosuppressive regulatory B cells and myeloid-derived suppressor cells. These data demonstrate, for the first time, that housing temperature affects the survival of RIC-treated I→I mice and that RIC-conditioned outbred mice are resistant to allogeneic T cell-induced BM and spleen damage.
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Affiliation(s)
- Josue Enriquez
- Department of Microbiology and Immunology, University of Gothenburg, 40530 Gothenburg, Sweden
| | - Brianyell McDaniel Mims
- Department of Oral Health Sciences, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Stephanie Stroever
- Department of Medical Education, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
| | - Andrea Pires dos Santos
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN 47907, USA
| | - Yava Jones-Hall
- Department of Veterinary Pathobiology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Kathryn L. Furr
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
| | - Matthew B. Grisham
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
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Manley AL, Chen J, Fitzgerald W, Feng X, Young NS. Immunosuppressive Activity of Exosomes from Granulocytic Myeloid-Derived Suppressor Cells in a Murine Model of Immune Bone Marrow Failure. Int J Mol Sci 2023; 24:14661. [PMID: 37834110 PMCID: PMC10572857 DOI: 10.3390/ijms241914661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/21/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023] Open
Abstract
We previously reported that granulocytic myeloid-derived suppressor cells (G-MDSCs) suppressed T-cell activation and attenuated bone marrow failure (BMF) in a minor histocompatibility (minor-H) antigen mismatched murine aplastic anemia (AA) model. In the current study, we tested the hypothesis that exosomes, a subset of extracellular vesicles, are responsible at least partially for G-MDSCs' therapeutic efficacy. Indeed, exosomes isolated from GMDSCs (G-MDSC-exos) suppressed CD4+ and CD8+ T-cell proliferation in vitro and mildly attenuated immune BMF in the minor-H mismatched AA model. G-MDSC-exos treatment significantly increased red blood cells, hemoglobin, and total bone marrow (BM) cells, and moderately reduced BM CD8+ T cells. G-MDSC-exos' effects were associated with upregulations in an array of lymphocyte-suppression-related miRNAs such as hsa-miR-142-5p, miR-19a-3p, and miR-19b-3p in both BM CD4+ and CD8+ T cells. We concluded that G-MDSC-exos attenuate immune BMF via modulating the delivery of immunosuppressive miRNAs into activated T lymphocytes.
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Affiliation(s)
- Ash Lee Manley
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (A.L.M.); (J.C.); (N.S.Y.)
| | - Jichun Chen
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (A.L.M.); (J.C.); (N.S.Y.)
| | - Wendy Fitzgerald
- Intracellular Interactions, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA;
| | - Xingmin Feng
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (A.L.M.); (J.C.); (N.S.Y.)
| | - Neal S. Young
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (A.L.M.); (J.C.); (N.S.Y.)
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