1
|
Aggeletopoulou I, Thomopoulos K, Mouzaki A, Triantos C. Vitamin D–VDR Novel Anti-Inflammatory Molecules—New Insights into Their Effects on Liver Diseases. Int J Mol Sci 2022; 23:ijms23158465. [PMID: 35955597 PMCID: PMC9369388 DOI: 10.3390/ijms23158465] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/26/2022] [Accepted: 07/28/2022] [Indexed: 02/05/2023] Open
Abstract
There is consistent evidence that vitamin D deficiency is strongly associated with liver dysfunction, disease severity, and poor prognosis in patients with liver disease. Vitamin D and its receptor (VDR) contribute to the regulation of innate and adaptive immune responses. The presence of genetic variants of vitamin D- and VDR-associated genes has been associated with liver disease progression. In our recent work, we summarized the progress in understanding the molecular mechanisms involved in vitamin D–VDR signaling and discussed the functional significance of VDR signaling in specific cell populations in liver disease. The current review focuses on the complex interaction between immune and liver cells in the maintenance of liver homeostasis and the development of liver injury, the interplay of vitamin D and VDR in the development and outcome of liver disease, the role of vitamin D- and VDR-associated genetic variants in modulating the occurrence and severity of liver disease, and the therapeutic value of vitamin D supplementation in various liver diseases. The association of the vitamin D–VDR complex with liver dysfunction shows great potential for clinical application and supports its use as a prognostic index and diagnostic tool.
Collapse
Affiliation(s)
- Ioanna Aggeletopoulou
- Division of Gastroenterology, Department of Internal Medicine, University Hospital of Patras, GR-26504 Patras, Greece; (I.A.); (C.T.)
- Division of Hematology, Department of Internal Medicine, Medical School, University of Patras, GR-26504 Patras, Greece;
| | - Konstantinos Thomopoulos
- Division of Gastroenterology, Department of Internal Medicine, University Hospital of Patras, GR-26504 Patras, Greece; (I.A.); (C.T.)
- Correspondence:
| | - Athanasia Mouzaki
- Division of Hematology, Department of Internal Medicine, Medical School, University of Patras, GR-26504 Patras, Greece;
| | - Christos Triantos
- Division of Gastroenterology, Department of Internal Medicine, University Hospital of Patras, GR-26504 Patras, Greece; (I.A.); (C.T.)
| |
Collapse
|
2
|
Liu Y, Hao H, Hou T. Concanavalin A-induced autoimmune hepatitis model in mice: Mechanisms and future outlook. Open Life Sci 2022; 17:91-101. [PMID: 35291566 PMCID: PMC8886606 DOI: 10.1515/biol-2022-0013] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/29/2021] [Accepted: 01/03/2022] [Indexed: 12/11/2022] Open
Abstract
Abstract
The concanavalin A (Con A)-induced liver injury mouse model is a typical animal model focusing on T cell-dependent hepatic damage in the field of autoimmune hepatitis (AIH). However, the underlying mechanism of hepatic dysfunction due to cell activation or signaling pathways triggered by Con A has not been fully clarified. Therefore, the controversy on this model remains in the academic community. In this article, we first summarized the merit and demerit of this contentious model from the perspectives of cell dysfunction, microcirculation disturbance, involved signaling pathways, as well as the properties of Con A. Then, we summed up the scientific implications of the model in elucidating the pathogenesis of AIH, and the shortcomings of this model were also summarized to elucidate the pathogenesis and application prospect of this classical liver injury mouse model in the study of AIH.
Collapse
Affiliation(s)
- Yang Liu
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
- Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
| | - Huiqin Hao
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
- Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
| | - Tiezheng Hou
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
- Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine , Jinzhong , 030619 , PR China
| |
Collapse
|
3
|
Endo-Umeda K, Nakashima H, Uno S, Toyoshima S, Umeda N, Komine-Aizawa S, Seki S, Makishima M. Liver X receptors regulate natural killer T cell population and antitumor activity in the liver of mice. Sci Rep 2021; 11:22595. [PMID: 34799646 PMCID: PMC8604965 DOI: 10.1038/s41598-021-02062-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 11/09/2021] [Indexed: 12/12/2022] Open
Abstract
The nuclear receptors liver X receptor α (LXRα) and LXRβ are lipid sensors that regulate lipid metabolism and immunity. Natural killer T (NKT) cells, a T cell subset expressing surface markers of both natural killer cells and T lymphocytes and involved in antitumor immunity, are another abundant immune cell type in the liver. The potential function of the metabolic regulators LXRα/β in hepatic NKT cells remains unknown. In this study, we examined the role of LXRα and LXRβ in NKT cells using mice deficient for LXRα and/or LXRβ, and found that hepatic invariant NKT (iNKT) cells are drastically decreased in LXRα/β-KO mice. Cytokine production stimulated by the iNKT cell activator α-galactosylceramide was impaired in LXRα/β-KO hepatic mononuclear cells and in LXRα/β-KO mice. iNKT cell-mediated antitumor effect was also disturbed in LXRα/β-KO mice. LXRα/β-KO mice transplanted with wild-type bone marrow showed decreased iNKT cells in the liver and spleen. The thymus of LXRα/β-KO mice showed a decreased population of iNKT cells. In conclusion, LXRα and LXRβ are essential for NKT cell-mediated immunity, such as cytokine production and hepatic antitumor activity, and are involved in NKT cell development in immune tissues, such as the thymus.
Collapse
Affiliation(s)
- Kaori Endo-Umeda
- Division of Biochemistry, Department of Biomedical Sciences, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Hiroyuki Nakashima
- Department of Immunology and Microbiology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Shigeyuki Uno
- Division of Biochemistry, Department of Biomedical Sciences, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Shota Toyoshima
- Allergy and Immunology Research Project Team, Research Institute of Medical Science, Center for Institutional Research and Medical Education, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan.,Department of Biochemistry and Molecular Biology, Nippon Medical School, Bunkyo-ku, Tokyo, Japan
| | - Naoki Umeda
- Division of Biochemistry, Department of Biomedical Sciences, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Shihoko Komine-Aizawa
- Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Shuhji Seki
- Department of Immunology and Microbiology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Makoto Makishima
- Division of Biochemistry, Department of Biomedical Sciences, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan.
| |
Collapse
|
4
|
The Role and Mechanism of Oxidative Stress and Nuclear Receptors in the Development of NAFLD. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6889533. [PMID: 34745420 PMCID: PMC8566046 DOI: 10.1155/2021/6889533] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 10/11/2021] [Indexed: 12/12/2022]
Abstract
The overproduction of reactive oxygen species (ROS) and consequent oxidative stress contribute to the pathogenesis of acute and chronic liver diseases. It is now acknowledged that nonalcoholic fatty liver disease (NAFLD) is characterized as a redox-centered disease due to the role of ROS in hepatic metabolism. However, the underlying mechanisms accounting for these alternations are not completely understood. Several nuclear receptors (NRs) are dysregulated in NAFLD, and have a direct influence on the expression of a set of genes relating to the progress of hepatic lipid homeostasis and ROS generation. Meanwhile, the NRs act as redox sensors in response to metabolic stress. Therefore, targeting NRs may represent a promising strategy for improving oxidation damage and treating NAFLD. This review summarizes the link between impaired lipid metabolism and oxidative stress and highlights some NRs involved in regulating oxidant/antioxidant turnover in the context of NAFLD, shedding light on potential therapies based on NR-mediated modulation of ROS generation and lipid accumulation.
Collapse
|
5
|
Ishikiriyama T, Nakashima H, Endo-Umeda K, Nakashima M, Ito S, Kinoshita M, Ikarashi M, Makishima M, Seki S. Contrasting functional responses of resident Kupffer cells and recruited liver macrophages to irradiation and liver X receptor stimulation. PLoS One 2021; 16:e0254886. [PMID: 34297734 PMCID: PMC8301620 DOI: 10.1371/journal.pone.0254886] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 07/06/2021] [Indexed: 02/06/2023] Open
Abstract
In the murine liver, there are two major macrophage populations, namely resident Kupffer cells (resKCs) with phagocytic activity and recruited macrophages (recMφs) with cytokine-producing capacity. This study was performed to clarify the functional differences between these two populations, focusing on their susceptibility to radiation and response to stimulation via liver X receptors (LXRs), which are implicated in cholesterol metabolism and immune regulation. Liver mononuclear cells (MNCs) were obtained from C57BL/6 (WT) mice with or without 2 Gy irradiation, and the phagocytic activity against Escherichia coli (E. coli) as well as TNF-α production were compared between the two macrophage populations. To assess LXR functions, phagocytosis, TNF-α production, and endocytosis of acetylated low-density lipoprotein (LDL) were compared after synthetic LXR ligand stimulation. Furthermore, LXRα/β knockout (KO) mice and LXRα KO mice were compared with WT mice. Irradiation decreased intracellular TNF-α production by recMφs but did not affect the phagocytic activity of resKCs. In vitro LXR stimulation enhanced E. coli phagocytosis by resKCs but decreased E. coli-stimulated TNF-α production by recMφs. Phagocytic activity and acetylated LDL endocytosis were decreased in both LXRα/β KO mice and LXRα KO mice, with serum TNF-α levels after E. coli injection in the former being higher than those in WT mice. In conclusion, resKCs and recMφs exhibited different functional features in response to radiation and LXR stimulation, highlighting their distinct roles liver immunity and lipid metabolism.
Collapse
Affiliation(s)
- Takuya Ishikiriyama
- Department of Immunology and Microbiology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Hiroyuki Nakashima
- Department of Immunology and Microbiology, National Defense Medical College, Tokorozawa, Saitama, Japan
- * E-mail:
| | - Kaori Endo-Umeda
- Division of Biochemistry, Department of Biomedical Sciences, Nihon University School of Medicine, Itabashi, Tokyo, Japan
| | - Masahiro Nakashima
- Department of Immunology and Microbiology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Seigo Ito
- Department of Nephrology and Endocrinology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Manabu Kinoshita
- Department of Immunology and Microbiology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Masami Ikarashi
- Department of Immunology and Microbiology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Makoto Makishima
- Division of Biochemistry, Department of Biomedical Sciences, Nihon University School of Medicine, Itabashi, Tokyo, Japan
| | - Shuhji Seki
- Department of Immunology and Microbiology, National Defense Medical College, Tokorozawa, Saitama, Japan
| |
Collapse
|
6
|
The role of invariant natural killer T cells in experimental xenobiotic-induced cholestatic hepatotoxicity. Biomed Pharmacother 2020; 122:109579. [DOI: 10.1016/j.biopha.2019.109579] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 10/10/2019] [Accepted: 10/23/2019] [Indexed: 12/21/2022] Open
|
7
|
Scott MJ. The upside-downside nature of Vitamin D signaling in liver. J Leukoc Biol 2019; 106:783-785. [PMID: 31379001 DOI: 10.1002/jlb.3ce0519-157r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 06/20/2019] [Accepted: 07/07/2019] [Indexed: 11/05/2022] Open
Abstract
Discussion of the potential contradictory effects of vitamin D receptor signaling in a mouse model of autoimmune hepatitis.
Collapse
Affiliation(s)
- Melanie J Scott
- Department of Surgery, University of Pittsburgh, Pennsylvania, USA
| |
Collapse
|