Abstract
Multiple sclerosis (MS) is an inflammatory demyelinating disease of the central nervous system (CNS) mediated by immune cells, in which auto-reactive CD4+ T cells have been implicated as a major driver in the pathogenesis of the disease. In this study, we aimed to investigate whether the artemisinin derivative TPN10475 could alleviate experimental autoimmune encephalomyelitis (EAE), a commonly used animal model of MS and its possible mechanisms. TPN10475 effectively resisted the reduction of TGF-β signal transduction induced by TCR stimulation, suppressed the activation and function of effector CD4+ T cells in vitro, and restricted the differentiation of pathogenic Th1 and Th17 cells. It was also found to negatively regulate the inflammatory response in EAE by reducing the peripheral activation drive of auto-reactive helper T lymphocytes, inhibiting the migration of inflammatory cells into the CNS to attenuate EAE. The above results suggested that the upregulation of TGF-β signal transduction may provide new ideas for the study of MS pathogenesis and have positive implications for the development of drugs for the treatment of autoimmune diseases.
Graphical Abstract
TPN10475 promotes TGF-β signaling under TCR stimulation, restricts the proliferation and activation of effector CD4+ T cells, inhibits the differentiation of pathogenic Th1 and Th17 cells, negatively regulates the inflammatory response and suppresses the migration of inflammatory cells to the CNS, thereby alleviating EAE. The figure was created with Biorender.com (Agreement number: ME25MXMB52).
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Data Availability
The material and data used to support the findings of the current study are available from the corresponding author on reasonable request.
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This project was supported by grants from the National Natural Science Foundation of China (32070768, 32270754).
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Chun Wang performed the experiments and wrote the manuscript. Xiangrui Jiang and Changsheng Du conceived the study and designed the experiment. Jie Lv, Wei Zhuang, and Ling Xie helped with data collection. Guangyu Liu, Kaidireya Saimaier, and Sanxing Han assisted in the analysis of the data. Changjie Shi, Qiuhong Hua, and Ru Zhang provided software and resources. Changsheng Du extensively and critically reviewed the manuscript. All authors participated in the study and supported the publication of the final version.
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All experiments were conducted by Ethical Principles in Animal Experimentation and were approved by the Animal Research Ethics Committee of Tongji University (Ethics number: TJAB03320103).
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Wang, C., Jiang, X., Lv, J. et al. TPN10475 Constrains Effector T Lymphocytes Activation and Attenuates Experimental Autoimmune Encephalomyelitis Pathogenesis by Facilitating TGF-β Signal Transduction. J Neuroimmune Pharmacol 19, 6 (2024). https://doi.org/10.1007/s11481-024-10109-x
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DOI: https://doi.org/10.1007/s11481-024-10109-x