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Yang Z, Tian C, He Z, Zhu X, He J, Pan H, Li Y, Ruan G, Wu X, Pan X. Mesenchymal stem cells reverse thymus aging by reprogramming the DNA methylation of thymic epithelial cells. Regen Ther 2024; 27:126-169. [PMID: 38571892 PMCID: PMC10988135 DOI: 10.1016/j.reth.2024.03.008] [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: 12/01/2023] [Revised: 02/20/2024] [Accepted: 03/09/2024] [Indexed: 04/05/2024] Open
Abstract
Background A decrease in the number and activity of thymic epithelial cells (TECs) is an important factor in thymic degeneration. Mesenchymal stem cells (MSCs) treating thymic ageing is a promising strategy, but the DNA methylation modification mechanism in TECs remains unclear. Methods Aged rhesus monkeys were treated with MSCs to establish a thymic senescence model, and hematoxylin-eosin (HE) staining, immunofluorescence staining, and ELISA were performed to observe the structure and function of the thymus. TEC aging model and MSCs co-culture system were established to detect DNA methylation modification and transcriptomic changes, correlation analysis between transcription factor methylation and mRNA expression, and q-PCR, immunofluorescence staining, and Western blot were used to identified key genes. Results MSCs improved the structure and function of thymus in elderly macaque monkeys; reduced the expression levels of β-Gal, P16, and P21; and increased the activity of aging TECs. There were 501 genes with increased methylation in the promoter region in the treated group compared with the untreated group, among which 23 genes were involved in the negative regulation of cell growth, proliferation and apoptosis, while 591 genes had decreased methylation, among which 37 genes were associated with promoting cell growth and proliferation and inhibiting apoptosis. Furthermore, 66 genes showed a negative correlation between promoter methylation levels and gene transcription; specifically, PDE5A, DUOX2, LAMP1 and SVIL were downregulated with increased methylation, inhibiting growth and development, while POLR3G, PGF, CHTF18, KRT17, FOXJ1, NGF, DYRK3, LRP8, CDT1, PRELID1, F2R, KNTC1 and TRIM3 were upregulated with decreased methylation, promoting cell growth. Conclusion MSCs improve the structure and function of aged thymus, which involves the regulation of DNA methylation profiles and a decrease in the methylation level of the transcription factor NGF to specifically upregulate KRT17 and FOXJ1 to promote the proliferation of TECs.
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Affiliation(s)
- Zailing Yang
- The Basic Medical Laboratory of the 920th Hospital of Joint Logistics Support Force of PLA, The Transfer Medicine Key Laboratory of Cell Therapy Technology of Yunan Province, The Integrated Engineering Laboratory of Cell Biological Medicine of State and Regions, Kunming 650032, Yunnan Province, China
- The Second Peoples Hospital of Guiyang, Medical Laboratory, Guiyang 550023, Guizhou Province, China
| | - Chuan Tian
- The Basic Medical Laboratory of the 920th Hospital of Joint Logistics Support Force of PLA, The Transfer Medicine Key Laboratory of Cell Therapy Technology of Yunan Province, The Integrated Engineering Laboratory of Cell Biological Medicine of State and Regions, Kunming 650032, Yunnan Province, China
| | - Zhixu He
- Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China
| | - Xiangqing Zhu
- The Basic Medical Laboratory of the 920th Hospital of Joint Logistics Support Force of PLA, The Transfer Medicine Key Laboratory of Cell Therapy Technology of Yunan Province, The Integrated Engineering Laboratory of Cell Biological Medicine of State and Regions, Kunming 650032, Yunnan Province, China
| | - Jie He
- The Basic Medical Laboratory of the 920th Hospital of Joint Logistics Support Force of PLA, The Transfer Medicine Key Laboratory of Cell Therapy Technology of Yunan Province, The Integrated Engineering Laboratory of Cell Biological Medicine of State and Regions, Kunming 650032, Yunnan Province, China
| | - Hang Pan
- The Basic Medical Laboratory of the 920th Hospital of Joint Logistics Support Force of PLA, The Transfer Medicine Key Laboratory of Cell Therapy Technology of Yunan Province, The Integrated Engineering Laboratory of Cell Biological Medicine of State and Regions, Kunming 650032, Yunnan Province, China
| | - Ye Li
- The Basic Medical Laboratory of the 920th Hospital of Joint Logistics Support Force of PLA, The Transfer Medicine Key Laboratory of Cell Therapy Technology of Yunan Province, The Integrated Engineering Laboratory of Cell Biological Medicine of State and Regions, Kunming 650032, Yunnan Province, China
| | - Guangping Ruan
- The Basic Medical Laboratory of the 920th Hospital of Joint Logistics Support Force of PLA, The Transfer Medicine Key Laboratory of Cell Therapy Technology of Yunan Province, The Integrated Engineering Laboratory of Cell Biological Medicine of State and Regions, Kunming 650032, Yunnan Province, China
| | - XiJun Wu
- The Second Peoples Hospital of Guiyang, Medical Laboratory, Guiyang 550023, Guizhou Province, China
| | - Xinghua Pan
- The Basic Medical Laboratory of the 920th Hospital of Joint Logistics Support Force of PLA, The Transfer Medicine Key Laboratory of Cell Therapy Technology of Yunan Province, The Integrated Engineering Laboratory of Cell Biological Medicine of State and Regions, Kunming 650032, Yunnan Province, China
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Lee DY, Song WH, Lim YS, Lee C, Rajbongshi L, Hwang SY, Kim BS, Lee D, Song YJ, Kim HG, Yoon S. Fish Collagen Peptides Enhance Thymopoietic Gene Expression, Cell Proliferation, Thymocyte Adherence, and Cytoprotection in Thymic Epithelial Cells via Activation of the Nuclear Factor-κB Pathway, Leading to Thymus Regeneration after Cyclophosphamide-Induced Injury. Mar Drugs 2023; 21:531. [PMID: 37888466 PMCID: PMC10608061 DOI: 10.3390/md21100531] [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: 09/19/2023] [Revised: 10/06/2023] [Accepted: 10/09/2023] [Indexed: 10/28/2023] Open
Abstract
Prolonged thymic involution results in decreased thymopoiesis and thymic output, leading to peripheral T-cell deficiency. Since the thymic-dependent pathway is the only means of generating fully mature T cells, the identification of strategies to enhance thymic regeneration is crucial in developing therapeutic interventions to revert immune suppression in immunocompromised patients. The present study clearly shows that fish collagen peptides (FCPs) stimulate activities of thymic epithelial cells (TECs), including cell proliferation, thymocyte adhesion, and the gene expression of thymopoietic factors such as FGF-7, IGF-1, BMP-4, VEGF-A, IL-7, IL-21, RANKL, LTβ, IL-22R, RANK, LTβR, SDF-1, CCL21, CCL25, CXCL5, Dll1, Dll4, Wnt4, CD40, CD80, CD86, ICAM-1, VCAM-1, FoxN1, leptin, cathepsin L, CK5, and CK8 through the NF-κB signal transduction pathway. Furthermore, our study also revealed the cytoprotective effects of FCPs on TECs against cyclophosphamide-induced cellular injury through the NF-κB signaling pathway. Importantly, FCPs exhibited a significant capability to facilitate thymic regeneration in mice after cyclophosphamide-induced damage via the NF-κB pathway. Taken together, this study sheds light on the role of FCPs in TEC function, thymopoiesis, and thymic regeneration, providing greater insight into the development of novel therapeutic strategies for effective thymus repopulation for numerous clinical conditions in which immune reconstitution is required.
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Affiliation(s)
- Do Young Lee
- Department of Anatomy and Convergence Medical Sciences, Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
- Immune Reconstitution Research Center of Medical Research Institute, Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
| | - Won Hoon Song
- Immune Reconstitution Research Center of Medical Research Institute, Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
- Department of Urology, Pusan National University Yangsan Hospital and Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
| | - Ye Seon Lim
- Department of Anatomy and Convergence Medical Sciences, Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
- Immune Reconstitution Research Center of Medical Research Institute, Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
| | - Changyong Lee
- Department of Anatomy and Convergence Medical Sciences, Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
- Immune Reconstitution Research Center of Medical Research Institute, Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
| | - Lata Rajbongshi
- Department of Anatomy and Convergence Medical Sciences, Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
- Immune Reconstitution Research Center of Medical Research Institute, Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
| | - Seon Yeong Hwang
- Department of Anatomy and Convergence Medical Sciences, Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
- Immune Reconstitution Research Center of Medical Research Institute, Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
| | - Byoung Soo Kim
- School of Biomedical Convergence Engineering, Pusan National University, Yangsan 626-870, Republic of Korea
| | - Dongjun Lee
- Department of Convergence Medicine, Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
| | - Yong Jung Song
- Immune Reconstitution Research Center of Medical Research Institute, Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
- Department of Obstetrics and Gynecology, Pusan National University Yangsan Hospital and Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
| | - Hwi-Gon Kim
- Immune Reconstitution Research Center of Medical Research Institute, Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
- Department of Obstetrics and Gynecology, Pusan National University Yangsan Hospital and Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
| | - Sik Yoon
- Department of Anatomy and Convergence Medical Sciences, Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
- Immune Reconstitution Research Center of Medical Research Institute, Pusan National University College of Medicine, Yangsan 626-870, Republic of Korea
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Wei C, Guo D, Li Y, Zhang K, Liang G, Li Y, Ma Y, Liu J, Li Y. Profiling analysis of 17β-estradiol-regulated lncRNAs in mouse thymic epithelial cells. Physiol Genomics 2018; 50:553-562. [DOI: 10.1152/physiolgenomics.00098.2017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Thymus is the primary organ for T cell differentiation and maturation. Many studies have demonstrated that estrogen plays a crucial role in thymic epithelial cell (TEC) proliferation during thymic involution. LncRNAs are involved in various biological processes; however, estrogen-mediated lncRNA expression in TECs has not been yet reported. To address this question, the mouse medullary thymic epithelial cell line 1 (MTEC1) was treated with 17β-estradiol (E2). By using CCK8 assay and flow cytometry, we found that E2 was able to inhibit viability and proliferation of MTEC1 cells. The expression profiles of lncRNAs in MTEC1 cells with or without E2 treatment were then measured by RNA-Seq, and a total of 962 lncRNAs and 2,469 mRNAs were shown to be differentially expressed. The reliability of RNA-Seq was confirmed by quantitative RT-PCR. Correlation analysis was conducted to investigate the potential function of lncRNAs. According to gene ontology (GO) analysis, differentially expressed lncRNAs were mainly related to cell proliferation, cell cycle and cell apoptosis. KEGG pathway analysis indicated that these lncRNAs were associated with several pathways, namely immunological activity, metabolism and cytokine-cytokine receptor interaction. In conclusion, our study provided a novel direction for studying the relationship between lncRNAs and E2 in the thymus.
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Affiliation(s)
- Chaonan Wei
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Dongguang Guo
- School of Life Science and Technology, Xinxiang University, Xinxiang, China
| | - Ying Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Kaizhao Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Guan Liang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Ying Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Yongjiang Ma
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Jilong Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Yugu Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
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Ravichandran KA, Karrunanithi S, Hima L, Pratap UP, Priyanka HP, ThyagaRajan S. Estrogen differentially regulates the expression of tyrosine hydroxylase and nerve growth factor through free radical generation in the thymus and mesenteric lymph nodes of middle-aged ovariectomized female Sprague-Dawley rats. ACTA ACUST UNITED AC 2017. [DOI: 10.1111/cen3.12415] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Kishore A. Ravichandran
- Integrative Medicine Laboratory; Department of Biotechnology; School of Bioengineering; SRM University; Chennai Tamil Nadu India
| | - Sunil Karrunanithi
- Integrative Medicine Laboratory; Department of Biotechnology; School of Bioengineering; SRM University; Chennai Tamil Nadu India
| | - Lalgi Hima
- Integrative Medicine Laboratory; Department of Biotechnology; School of Bioengineering; SRM University; Chennai Tamil Nadu India
| | - Uday P. Pratap
- Integrative Medicine Laboratory; Department of Biotechnology; School of Bioengineering; SRM University; Chennai Tamil Nadu India
| | - Hannah P. Priyanka
- Integrative Medicine Laboratory; Department of Biotechnology; School of Bioengineering; SRM University; Chennai Tamil Nadu India
| | - Srinivasan ThyagaRajan
- Integrative Medicine Laboratory; Department of Biotechnology; School of Bioengineering; SRM University; Chennai Tamil Nadu India
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NGF and Its Receptors in the Regulation of Inflammatory Response. Int J Mol Sci 2017; 18:ijms18051028. [PMID: 28492466 PMCID: PMC5454940 DOI: 10.3390/ijms18051028] [Citation(s) in RCA: 178] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 03/31/2017] [Accepted: 05/03/2017] [Indexed: 12/28/2022] Open
Abstract
There is growing interest in the complex relationship between the nervous and immune systems and how its alteration can affect homeostasis and result in the development of inflammatory diseases. A key mediator in cross-talk between the two systems is nerve growth factor (NGF), which can influence both neuronal cell function and immune cell activity. The up-regulation of NGF described in inflamed tissues of many diseases can regulate innervation and neuronal activity of peripheral neurons, inducing the release of immune-active neuropeptides and neurotransmitters, but can also directly influence innate and adaptive immune responses. Expression of the NGF receptors tropomyosin receptor kinase A (TrkA) and p75 neurotrophin receptor (p75NTR) is dynamically regulated in immune cells, suggesting a varying requirement for NGF depending on their state of differentiation and functional activity. NGF has a variety of effects that can be either pro-inflammatory or anti-inflammatory. This apparent contradiction can be explained by considering NGF as part of an endogenous mechanism that, while activating immune responses, also activates pathways necessary to dampen the inflammatory response and limit tissue damage. Decreases in TrkA expression, such as that recently demonstrated in immune cells of arthritis patients, might prevent the activation by NGF of regulatory feed-back mechanisms, thus contributing to the development and maintenance of chronic inflammation.
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NGF in Early Embryogenesis, Differentiation, and Pathology in the Nervous and Immune Systems. Curr Top Behav Neurosci 2015; 29:125-152. [PMID: 26695167 DOI: 10.1007/7854_2015_420] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The physiology of NGF is extremely complex, and although the study of this neurotrophin began more than 60 years ago, it is far from being concluded. NGF, its precursor molecule pro-NGF, and their different receptor systems (i.e., TrkA, p75NTR, and sortilin) have key roles in the development and adult physiology of both the nervous and immune systems. Although the NGF receptor system and the pathways activated are similar for all types of cells sensitive to NGF, the effects exerted during embryonic differentiation and in committed mature cells are strikingly different and sometimes opposite. Bearing in mind the pleiotropic effects of NGF, alterations in its expression and synthesis, as well as variations in the types of receptor available and in their respective levels of expression, may have profound effects and play multiple roles in the development and progression of several diseases. In recent years, the use of NGF or of inhibitors of its receptors has been prospected as a therapeutic tool in a variety of neurological diseases and injuries. In this review, we outline the different roles played by the NGF system in various moments of nervous and immune system differentiation and physiology, from embryonic development to aging. The data collected over the past decades indicate that NGF activities are highly integrated among systems and are necessary for the maintenance of homeostasis. Further, more integrated and multidisciplinary studies should take into consideration these multiple and interactive aspects of NGF physiology in order to design new therapeutic strategies based on the manipulation of NGF and its intracellular pathways.
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Jung WS, Han SM, Kim SM, Kim ME, Lee JS, Seo KW, Youn HY, Lee HW. Stimulatory effect of HGF-overexpressing adipose tissue-derived mesenchymal stem cells on thymus regeneration in a rat thymus involution model. Cell Biol Int 2014; 38:1106-17. [DOI: 10.1002/cbin.10306] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Accepted: 04/14/2014] [Indexed: 01/07/2023]
Affiliation(s)
- Woo-Sung Jung
- Department of Veterinary Internal Medicine, College of Veterinary Medicine; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 151-742 Republic of Korea
| | - Sei-Myoung Han
- Department of Veterinary Internal Medicine, College of Veterinary Medicine; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 151-742 Republic of Korea
| | - Sung-Min Kim
- Division of Magnetic Resonance Research; Korea Basic Science Institute; Ochang Chungbuk Republic of Korea
| | - Mi-Eun Kim
- Department of Biology, College of Natural Sciences; Chosun University; Gwangju Republic of Korea
| | - Jun-Sik Lee
- Department of Biology, College of Natural Sciences; Chosun University; Gwangju Republic of Korea
| | - Kyoung-Won Seo
- Department of Veterinary Internal Medicine, College of Veterinary Medicine; Chungnam National University; 99 Daehakro Yuseoung gu Daejon 305-764 Republic of Korea
| | - Hwa-Young Youn
- Department of Veterinary Internal Medicine, College of Veterinary Medicine; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 151-742 Republic of Korea
- Research Institute for Veterinary Science, College of Veterinary Medicine; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 151-742 Republic of Korea
| | - Hee-Woo Lee
- Research Institute for Veterinary Science, College of Veterinary Medicine; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 151-742 Republic of Korea
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Chang RS, Wang SD, Wang YC, Lin LJ, Kao ST, Wang JY. Xiao-Qing-Long-Tang shows preventive effect of asthma in an allergic asthma mouse model through neurotrophin regulation. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 13:220. [PMID: 24010817 PMCID: PMC3847146 DOI: 10.1186/1472-6882-13-220] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Accepted: 09/06/2013] [Indexed: 12/13/2022]
Abstract
BACKGROUND This study investigates the effect of Xiao-Qing-Long-Tang (XQLT) on neurotrophin in an established mouse model of Dermatophagoides pteronyssinus (Der p)-induced acute allergic asthma and in a LA4 cell line model of lung adenoma. The effects of XQLT on the regulation of nerve growth factor (NGF) and brain-derived neurotrophic factor (BDNF), airway hyper-responsiveness (AHR) and immunoglobulin E were measured. METHODS LA4 cells were stimulated with 100 μg/ml Der p 24 h and the supernatant was collected for ELISA analysis. Der p-stimulated LA4 cells with either XQLT pre-treatment or XQLT co-treatment were used to evaluate the XQLT effect on neurotrophin.Balb/c mice were sensitized on days 0 and 7 with a base-tail injection of 50 μg Dermatophagoides pteronyssinus (Der p) that was emulsified in 50 μl incomplete Freund's adjuvant (IFA). On day 14, mice received an intra-tracheal challenge of 50 μl Der p (2 mg/ml). XQLT (1g/Kg) was administered orally to mice either on days 2, 4, 6, 8, 10 and 12 as a preventive strategy or on day 15 as a therapeutic strategy. RESULTS XQLT inhibited expression of those NGF, BDNF and thymus-and activation-regulated cytokine (TARC) in LA4 cells that were subjected to a Der p allergen. Both preventive and therapeutic treatments with XQLT in mice reduced AHR. Preventive treatment with XQLT markedly decreased NGF in broncho-alveolar lavage fluids (BALF) and BDNF in serum, whereas therapeutic treatment reduced only serum BDNF level. The reduced NGF levels corresponded to a decrease in AHR by XQLT treatment. Reduced BALF NGF and TARC and serum BDNF levels may have been responsible for decreased eosinophil infiltration into lung tissue. Immunohistochemistry showed that p75NTR and TrkA levels were reduced in the lungs of mice under both XQLT treatment protocols, and this reduction may have been correlated with the prevention of the asthmatic reaction by XQLT. CONCLUSION XQLT alleviated allergic inflammation including AHR, IgE elevation and eosinophil infiltration in Der p stimulated mice by regulating neurotrophin and reducing TARC. These results revealed the potential pharmacological targets on which the XQLT decotion exerts preventive and therapeutic effects in an allergic asthma mouse model.
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Affiliation(s)
- Ren-Shiu Chang
- Graduate Institute of Chinese Medicine, China Medical University, No. 91 Hsueh-Shih Road, Taichung, 40402, Taiwan
- Department of Chinese Medicine, Tainan Sin-Lau Hospital, No. 57, Sec. 1, Dongmen Rd, Tainan 70142, Taiwan
| | - Shulhn-Der Wang
- School of Post-Baccalaureate Chinese Medicine, College of Chinese Medicine, China Medical University, No. 91 Hsueh-Shih Road, Taichung 40402, Taiwan
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, No. 91 Hsueh-Shih Road, Taichung 40402, Taiwan
| | - Yu-Chin Wang
- Department of Pediatrics, College of Medicine, National Cheng Kung University, No. 138, Sheng-Li Road, Tainan 70428, Taiwan
| | - Li-Jen Lin
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, No. 91 Hsueh-Shih Road, Taichung 40402, Taiwan
| | - Shung-Te Kao
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, No. 91 Hsueh-Shih Road, Taichung 40402, Taiwan
- Department of Chinese Medicine, China Medical University Hospital, No. 2 Yude Road, Taichung, 40447, Taiwan
| | - Jiu-Yao Wang
- Department of Pediatrics, College of Medicine, National Cheng Kung University, No. 138, Sheng-Li Road, Tainan 70428, Taiwan
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Lee D, Lee KH, Park H, Kim SH, Jin T, Cho S, Chung JH, Lim S, Park S. The effect of soluble RAGE on inhibition of angiotensin II-mediated atherosclerosis in apolipoprotein E deficient mice. PLoS One 2013; 8:e69669. [PMID: 23936343 PMCID: PMC3731311 DOI: 10.1371/journal.pone.0069669] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Accepted: 06/11/2013] [Indexed: 01/11/2023] Open
Abstract
Background The cross talk between RAGE and angiotensin II (AngII) activation may be important in the development of atherosclerosis. Soluble RAGE (sRAGE), a truncated soluble form of the receptor, acts as a decoy and prevents the inflammatory response mediated by RAGE activation. In this study, we sought to determine the effect of sRAGE in inhibiting AngII-induced atherosclerosis in apolipoprotein E knockout mice (Apo E KO). Methods and Results 9 week old Apo E KO mice were infused subcutaneously with AngII (1 µg/min/kg) and saline for 4 weeks using osmotic mini-pumps. The mice were divided into 4 groups 1. saline infusion and saline injection; 2. saline infusion and sRAGE injection; 3. AngII infusion and saline injection; 4. AngII infusion and sRAGE injection. Saline or 0.5 µg, 1 µg, to 2 µg/day/mouse of sRAGE were injected intraperitoneally daily for 28 days. We showed that atherosclerotic plaque areas in the AngII-infused Apo E KO mice and markers of inflammation such as RAGE, ICAM-1, VCAM-1, and MCP-1 were increased in aorta compared to that of the Apo E KO mice. However, the treatment of 0.5 µg, 1 µg, and 2 µg of sRAGE in AngII group resulted in the dose-dependent decrease in atherosclerotic plaque area. We also demonstrated that sRAGE decreased RAGE expression level as well as inflammatory cytokines and cell adhesion molecules in AngII or HMGB1 treated-rat aorta vascular smooth muscle cells. Conclusion The results demonstrated that partical blockade of RAGE activation by sRAGE prevent AngII -induced atherosclerosis. Therefore these results suggested that first, RAGE activation may be important in mediating AngII-induced atherogenesis, and second, AngII activation is a major pathway in the development of atherosclerosis. Taken together, results from this study may provide the basis for future anti- atherosclerotic drug development mediated through RAGE activation.
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Affiliation(s)
- Dajeong Lee
- Graduate Program in Science for Aging and Yonsei Research Institute of Aging Science, Yonsei University, Seoul, Republic of Korea
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kyung Hye Lee
- Medical Science Research Institute, Kyung Hee University Medical Center, Seoul, Republic of Korea
| | - Hyelim Park
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
- Brain Korea 21 Project for Medical Science, Yonsei University, Seoul, Republic of Korea
| | - Soo Hyuk Kim
- Graduate Program in Science for Aging and Yonsei Research Institute of Aging Science, Yonsei University, Seoul, Republic of Korea
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Taewon Jin
- Graduate Program in Science for Aging and Yonsei Research Institute of Aging Science, Yonsei University, Seoul, Republic of Korea
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Soyoung Cho
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
- Severance Integrative Research Institute for Cerebral and Cardiovascular Diseases, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Ji Hyung Chung
- Graduate Program in Science for Aging and Yonsei Research Institute of Aging Science, Yonsei University, Seoul, Republic of Korea
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Soyeon Lim
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
- Severance Integrative Research Institute for Cerebral and Cardiovascular Diseases, Yonsei University College of Medicine, Seoul, Republic of Korea
- * E-mail: (SP); (SL)
| | - Sungha Park
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
- Division of Cardiology, Yonsei University College of Medicine, Seoul, Republic of Korea
- Brain Korea 21 Project for Medical Science, Yonsei University, Seoul, Republic of Korea
- * E-mail: (SP); (SL)
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Yoon TD, Lee HW, Kim YS, Choi HJ, Moon JO, Yoon S. Identification and analysis of expressed genes using a cDNA library from rat thymus during regeneration following cyclophosphamide-induced T cell depletion. Int J Mol Med 2013; 31:731-9. [PMID: 23314113 DOI: 10.3892/ijmm.2013.1238] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Accepted: 12/12/2012] [Indexed: 11/05/2022] Open
Abstract
Understanding the mechanisms of thymus regeneration is necessary for designing strategies to enhance host immunity when immune function is suppressed due to T cell depletion. In this study, expressed sequence tag (EST) analysis was performed following generation of a regenerating thymus cDNA library to identify genes expressed in thymus regeneration. A total of 1,000 ESTs were analyzed, of which 770 (77%) matched to known genes, 178 matched to unknown genes (17.8%) and 52 (5.2%) did not match any known sequences. The ESTs matched to known genes were grouped into eight functional categories: gene/protein synthesis (28%), metabolism (24%), cell signaling and communication (17%), cell structure and motility (6%), cell/organism defense and homeostasis (6%), cell division (3%), cell death/apoptosis (2%), and unclassified genes (14%). Based on the data of RT-PCR analysis, the expression of TLP, E2IG2, pincher, Paip2, TGF-β1, 4-1BB and laminin α3 genes was increased during thymus regeneration. These results provide extensive molecular information, for the first time, on thymus regeneration indicating that the regenerating thymus cDNA library may be a useful source for identifying various genes expressed during thymus regeneration.
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Affiliation(s)
- Tae-Deuk Yoon
- Department of Anatomy, Pusan National University, School of Medicine, Yangsan, Gyeongsangnam-do 626-870, Republic of Korea
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Regulatory role of mouse epidermal growth factor-like protein 8 in thymic epithelial cells. Biochem Biophys Res Commun 2012; 425:250-5. [DOI: 10.1016/j.bbrc.2012.07.076] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Accepted: 07/16/2012] [Indexed: 01/27/2023]
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Expression and function of interleukin-7 in secondary and tertiary lymphoid organs. Semin Immunol 2012; 24:175-89. [PMID: 22444422 DOI: 10.1016/j.smim.2012.02.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Revised: 01/06/2012] [Accepted: 02/15/2012] [Indexed: 12/23/2022]
Abstract
Interleukin-7 (IL-7) is known since many years as stromal-cell derived cytokine that plays a key role for the adaptive immune system. It promotes lymphocyte development in the bone marrow and thymus as well as naive and memory T cell homeostasis in the periphery. More recently, IL-7 reporter mice and other approaches have led to the further characterization of the various stromal cell sources of IL-7 in secondary lymphoid organs (SLO) and other tissues. We will review these advances along with a discussion of the regulation of IL-7 and its receptor, and compare the biological effects IL-7 has on adaptive as well as innate immune cells in SLO. Finally, we will review the role of IL-7 in development of SLO and tertiary lymphoid tissues that frequently are associated with sites of chronic inflammation.
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Cimpean AM, Ceauşu R, Encică S, Gaje PN, Ribatti D, Raica M. Platelet-derived growth factor and platelet-derived growth factor receptor-α expression in the normal human thymus and thymoma. Int J Exp Pathol 2011; 92:340-4. [PMID: 21645144 DOI: 10.1111/j.1365-2613.2011.00777.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Platelet-derived growth factor (PDGF) and its receptors (PDGFRs) are strongly involved in the normal development of several organs, tumour angiogenesis and malignant progression and metastasis. Few studies concerning their expression, distribution and role in normal and pathological human thymus are available in the literature. The aim of this study has been to analyse the immunohistochemical expression of PDGF and PDGFR-α in prenatal and postnatal normal human thymus and thymomal biopsy specimens. The results demonstrated immunoreactivity to both PDGF and PDGFR-α in all specimens, but the intensity, distribution and number of positive cells were different in normal thymus and thymomas, and also among different tumour types. PDGF and PDGFR-α were weakly expressed in foetal and postnatal humans with a different distribution between cortex and medulla in both blood vessels and epithelial cells, whereas they were overexpressed in thymoma, especially in type B2 and B3, in the tumour epithelial cells. Overall, these data suggest that PDGF and PDGFR-α may be involved in the pathophysiology of the human thymus.
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Affiliation(s)
- Anca Maria Cimpean
- Department of Histology, Victor Babeş University of Medicine and Pharmacy, Timişoara, Romania
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