1
|
Zhang T, Mi J, Qin X, Ouyang Z, Wang Y, Li Z, He S, Hu K, Wang R, Huang W. Rosmarinic Acid Alleviates Radiation-Induced Pulmonary Fibrosis by Downregulating the tRNA N7-Methylguanosine Modification-Regulated Fibroblast-to-Myofibroblast Transition Through the Exosome Pathway. J Inflamm Res 2024; 17:5567-5586. [PMID: 39188632 PMCID: PMC11346487 DOI: 10.2147/jir.s458794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 08/10/2024] [Indexed: 08/28/2024] Open
Abstract
Background Radiation-induced pulmonary fibrosis (RIPF) is a common complication after radiotherapy in thoracic cancer patients, and effective treatment methods are lacking. The purpose of this study was to investigate the protective effect of rosmarinic acid (RA) on RIPF in mice as well as the mechanism involved. Methods m7G-tRNA-seq and tRNA-seq analyses were conducted to identify m7G-modified tRNAs. Western blotting, immunohistochemistry, northwestern blotting, northern blotting, immunofluorescence, wound-healing assays and EdU experiments were performed to explore the molecular mechanism by which RA regulates fibroblast-to-myofibroblast transformation (FMT) by affecting the exosomes of lung epithelial cells. Ribo-seq and mRNA-seq analyses were used to explore the underlying target mRNAs. Seahorse assays and immunoprecipitation were carried out to elucidate the effects of RA on glycolysis and FMT processes via the regulation of 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 3 (PFKFB3) acetylation. Results We found that RA had an antifibrotic effect on the lung tissues of RIPF model mice and inhibited the progression of FMT through exosomes derived from lung epithelial cells. Mechanistically, RA reduced the transcription and translation efficiency of sphingosine kinase 1 in lung fibroblasts by decreasing N7-methylguanosine modification of tRNA, downregulating the expression of tRNAs in irradiated lung epithelial cell-derived exosomes, and inhibiting the interaction between sphingosine kinase 1 and the N-acetyltransferase 10 protein in fibroblasts. Furthermore, the acetylation and cytoplasmic translocation of PFKFB3 were reduced by exosomes derived from irradiated lung epithelial cells, which following RA intervention. This suppression of the FMT process, which is triggered by glycolysis, and ultimately decelerating the progression of RIPF. Conclusion These findings suggest that RA is a potential therapeutic agent for RIPF.
Collapse
Affiliation(s)
- Tingting Zhang
- Department of Radiation Oncology, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
- Guangxi Key Laboratory of Immunology and Metabolism for Liver Diseases, Nanning, Guangxi, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High-Frequency Tumors (Guangxi Medical University), Ministry of Education, Nanning, Guangxi, People’s Republic of China
| | - Jinglin Mi
- Department of Radiation Oncology, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
- Guangxi Key Laboratory of Immunology and Metabolism for Liver Diseases, Nanning, Guangxi, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High-Frequency Tumors (Guangxi Medical University), Ministry of Education, Nanning, Guangxi, People’s Republic of China
| | - Xinling Qin
- Department of Radiation Oncology, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
- Guangxi Key Laboratory of Immunology and Metabolism for Liver Diseases, Nanning, Guangxi, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High-Frequency Tumors (Guangxi Medical University), Ministry of Education, Nanning, Guangxi, People’s Republic of China
| | - Zhechen Ouyang
- Department of Radiation Oncology, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
- Guangxi Key Laboratory of Immunology and Metabolism for Liver Diseases, Nanning, Guangxi, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High-Frequency Tumors (Guangxi Medical University), Ministry of Education, Nanning, Guangxi, People’s Republic of China
| | - Yiru Wang
- Department of Radiation Oncology, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
- Guangxi Key Laboratory of Immunology and Metabolism for Liver Diseases, Nanning, Guangxi, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High-Frequency Tumors (Guangxi Medical University), Ministry of Education, Nanning, Guangxi, People’s Republic of China
| | - Zhixun Li
- Department of Radiation Oncology, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
- Guangxi Key Laboratory of Immunology and Metabolism for Liver Diseases, Nanning, Guangxi, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High-Frequency Tumors (Guangxi Medical University), Ministry of Education, Nanning, Guangxi, People’s Republic of China
| | - Siyi He
- Department of Radiation Oncology, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
- Guangxi Key Laboratory of Immunology and Metabolism for Liver Diseases, Nanning, Guangxi, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High-Frequency Tumors (Guangxi Medical University), Ministry of Education, Nanning, Guangxi, People’s Republic of China
| | - Kai Hu
- Department of Radiation Oncology, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
- Guangxi Key Laboratory of Immunology and Metabolism for Liver Diseases, Nanning, Guangxi, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High-Frequency Tumors (Guangxi Medical University), Ministry of Education, Nanning, Guangxi, People’s Republic of China
| | - Rensheng Wang
- Department of Radiation Oncology, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
- Guangxi Key Laboratory of Immunology and Metabolism for Liver Diseases, Nanning, Guangxi, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High-Frequency Tumors (Guangxi Medical University), Ministry of Education, Nanning, Guangxi, People’s Republic of China
| | - Weimei Huang
- Department of Radiation Oncology, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
- Guangxi Key Laboratory of Immunology and Metabolism for Liver Diseases, Nanning, Guangxi, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High-Frequency Tumors (Guangxi Medical University), Ministry of Education, Nanning, Guangxi, People’s Republic of China
| |
Collapse
|
2
|
Chen P, Liu H, Xin H, Cheng B, Sun C, Liu Y, Liu T, Wen Z, Cheng Y. Inhibiting the Cytosolic Phospholipase A2-Arachidonic Acid Pathway With Arachidonyl Trifluoromethyl Ketone Attenuates Radiation-Induced Lung Fibrosis. Int J Radiat Oncol Biol Phys 2023; 115:476-489. [PMID: 35450754 DOI: 10.1016/j.ijrobp.2022.03.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 03/01/2022] [Accepted: 03/02/2022] [Indexed: 01/11/2023]
Abstract
PURPOSE Radiation-induced lung fibrosis (RILF) is a serious late complication of thoracic radiation therapy. Inflammation is crucial in fibroblast activation and RILF, and arachidonic acid (AA) is an important inflammatory mediator released by cytosolic phospholipase A2 (cPLA2) and reduced by arachidonyl trifluoromethyl ketone (ATK)-targeting of cPLA2. Here, we aimed to investigate the roles of the cPLA2/AA pathway in RILF and assess the potential of targeting cPLA2 to prevent RILF. METHODS AND MATERIALS A computed tomography scan was used to obtain the mean lung density, and hematoxylin-eosin, Masson's trichrome, and Sirius Red staining were used to assess the histopathologic conditions in mouse models. AA levels in mouse serum and cell supernatants were tested by enzyme-linked immunosorbent assay. Fibroblast phenotype alterations were examined by a Cell Counting Kit-8, manual cell counting, and a Transwell system. The protein levels were evaluated via Western blotting, immunofluorescence, and immunohistochemistry. RESULTS AA protected fibroblasts against radiation-induced growth inhibition and promoted fibroblast activation, which was characterized by enhanced α-smooth muscle actin expression and migration capacity. Radiation could activate fibroblasts by upregulating cPLA2 expression and AA production, which could be reversed by ATK. Moreover, inhibiting cPLA2 with ATK significantly attenuated collagen deposition and radiation-induced pulmonary fibrosis in mouse models. We further identified extracellular-signal regulated protein kinase (ERK) as the downstream target of the radiation-AA regulatory axis. Radiation-induced AA increased phosphorylated-ERK levels, promoting cyclinD1, cyclin-dependent kinase 6, and α-smooth muscle actin expression and contributing to fibroblast activation. Inhibiting P-ERK impaired radiation- and AA-induced fibroblast activation. The related molecular mechanisms were verified using specimens from animal models. CONCLUSIONS Our findings uncover the role of the cPLA2/AA-ERK regulatory axis in response to radiation in pulmonary fibroblast activation and recognize cPLA2 as the key regulatory molecule during RILF for the first time. Targeting cPLA2 may be a promising protective strategy against RILF.
Collapse
Affiliation(s)
- Pengxiang Chen
- Department of Radiation Oncology; Laboratory of Basic Medical Sciences
| | - Hui Liu
- Department of Clinical Laboratory, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China
| | | | - Bo Cheng
- Shandong Cancer Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China
| | - Changhua Sun
- Shandong Institute for Food and Drug Control, Jinan, People's Republic of China
| | | | | | | | | |
Collapse
|
3
|
Lu L, Ma J, Liu Y, Shao Y, Xiong X, Duan W, Gao E, Yang Q, Chen S, Yang J, Ren J, Zheng Q, Liu J. FSTL1-USP10-Notch1 Signaling Axis Protects Against Cardiac Dysfunction Through Inhibition of Myocardial Fibrosis in Diabetic Mice. Front Cell Dev Biol 2021; 9:757068. [PMID: 34957094 PMCID: PMC8695978 DOI: 10.3389/fcell.2021.757068] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 11/17/2021] [Indexed: 12/11/2022] Open
Abstract
The incidence of type 2 diabetes mellitus (T2DM) has been increasing globally, and T2DM patients are at an increased risk of major cardiac events such as myocardial infarction (MI). Nevertheless, the molecular mechanisms underlying MI injury in T2DM remain elusive. Ubiquitin-specific protease 10 (USP10) functions as a NICD1 (Notch1 receptor) deubiquitinase that fine-tunes the essential myocardial fibrosis regulator Notch signaling. Follistatin-like protein 1 (FSTL1) is a cardiokine with proven benefits in multiple pathological processes including cardiac fibrosis and insulin resistance. This study was designed to examine the roles of FSTL1/USP10/Notch1 signaling in MI-induced cardiac dysfunction in T2DM. High-fat-diet-treated, 8-week-old C57BL/6J mice and db/db T2DM mice were used. Intracardiac delivery of AAV9-FSTL1 was performed in T2DM mice following MI surgery with or without intraperitoneal injection of crenigacestat (LY3039478) and spautin-1. Our results demonstrated that FSTL1 improved cardiac function following MI under T2DM by reducing serum lactate dehydrogenase (LDH) and myocardial apoptosis as well as cardiac fibrosis. Further in vivo studies revealed that the protective role of FSTL1 against MI injury in T2DM was mediated by the activation of USP10/Notch1. FSTL1 protected cardiac fibroblasts (CFs) against DM-MI-induced cardiofibroblasts injury by suppressing the levels of fibrosis markers, and reducing LDH and MDA concentrations in a USP10/Notch1-dependent manner. In conclusion, FSTL1 treatment ameliorated cardiac dysfunction in MI with co-existent T2DM, possibly through inhibition of myocardial fibrosis and apoptosis by upregulating USP10/Notch1 signaling. This finding suggests the clinical relevance and therapeutic potential of FSTL1 in T2DM-associated MI and other cardiovascular diseases.
Collapse
Affiliation(s)
- Linhe Lu
- Department of Cardiovascular Surgery, Xijing Hospital, The Air Force Medical University, Xi’an, China
| | - Jipeng Ma
- Department of Cardiovascular Surgery, Xijing Hospital, The Air Force Medical University, Xi’an, China
| | - Yang Liu
- Department of Cardiovascular Surgery, Xijing Hospital, The Air Force Medical University, Xi’an, China
| | - Yalan Shao
- Department of Cardiovascular Surgery, Xijing Hospital, The Air Force Medical University, Xi’an, China
| | - Xiang Xiong
- Department of Cardiovascular Surgery, Xijing Hospital, The Air Force Medical University, Xi’an, China
| | - Weixun Duan
- Department of Cardiovascular Surgery, Xijing Hospital, The Air Force Medical University, Xi’an, China
| | - Erhe Gao
- Center for Translational Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Qianli Yang
- Department of Ultrasound, Xijing Hospital, The Air Force Medical University, Xi’an, China
| | - Shasha Chen
- Department of Ultrasound, Xijing Hospital, The Air Force Medical University, Xi’an, China
| | - Jian Yang
- Department of Cardiovascular Surgery, Xijing Hospital, The Air Force Medical University, Xi’an, China
| | - Jun Ren
- Department of Cardiology and Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai, China
- Department of Clinical Medicine and Pathology, University of Washington, Seattle, WA, United States
- *Correspondence: Jun Ren, ; Qijun Zheng, ; Jincheng Liu,
| | - Qijun Zheng
- Department of Cardiovascular Surgery, Shenzhen People’s Hospital, The Second Clinical Medical College, Jinan University, Shenzhen, China
- *Correspondence: Jun Ren, ; Qijun Zheng, ; Jincheng Liu,
| | - Jincheng Liu
- Department of Cardiovascular Surgery, Xijing Hospital, The Air Force Medical University, Xi’an, China
- *Correspondence: Jun Ren, ; Qijun Zheng, ; Jincheng Liu,
| |
Collapse
|
4
|
Follistatin-Like-1 (FSTL1) Is a Fibroblast-Derived Growth Factor That Contributes to Progression of Chronic Kidney Disease. Int J Mol Sci 2021; 22:ijms22179513. [PMID: 34502419 PMCID: PMC8431028 DOI: 10.3390/ijms22179513] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 12/20/2022] Open
Abstract
Our understanding of the mechanisms responsible for the progression of chronic kidney disease (CKD) is incomplete. Microarray analysis of kidneys at 4 and 7 weeks of age in Col4a3-/- mice, a model of progressive nephropathy characterized by proteinuria, interstitial fibrosis, and inflammation, revealed that Follistatin-like-1 (Fstl1) was one of only four genes significantly overexpressed at 4 weeks of age. mRNA levels for the Fstl1 receptors, Tlr4 and Dip2a, increased in both Col4a-/- mice and mice subjected to unilateral ureteral obstruction (UUO). RNAscope® (Advanced Cell Diagnostics, Newark CA, USA) localized Fstl1 to interstitial cells, and in silico analysis of single cell transcriptomic data from human kidneys showed Fstl1 confined to interstitial fibroblasts/myofibroblasts. In vitro, FSTL1 activated AP1 and NFκB, increased collagen I (COL1A1) and interleukin-6 (IL6) expression, and induced apoptosis in cultured kidney cells. FSTL1 expression in the NEPTUNE cohort of humans with focal segmental glomerulosclerosis (FSGS), membranous nephropathy (MN), and IgA nephropathy (IgAN) was positively associated with age, eGFR, and proteinuria by multiple linear regression, as well as with interstitial fibrosis and tubular atrophy. Clinical disease progression, defined as dialysis or a 40 percent reduction in eGFR, was greater in patients with high baseline FSTL1 mRNA levels. FSTL1 is a fibroblast-derived cytokine linked to the progression of experimental and clinical CKD.
Collapse
|
5
|
Myofibroblasts: Function, Formation, and Scope of Molecular Therapies for Skin Fibrosis. Biomolecules 2021; 11:biom11081095. [PMID: 34439762 PMCID: PMC8391320 DOI: 10.3390/biom11081095] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 07/16/2021] [Accepted: 07/20/2021] [Indexed: 12/11/2022] Open
Abstract
Myofibroblasts are contractile, α-smooth muscle actin-positive cells with multiple roles in pathophysiological processes. Myofibroblasts mediate wound contractions, but their persistent presence in tissues is central to driving fibrosis, making them attractive cell targets for the development of therapeutic treatments. However, due to shared cellular markers with several other phenotypes, the specific targeting of myofibroblasts has long presented a scientific and clinical challenge. In recent years, myofibroblasts have drawn much attention among scientific research communities from multiple disciplines and specialisations. As further research uncovers the characterisations of myofibroblast formation, function, and regulation, the realisation of novel interventional routes for myofibroblasts within pathologies has emerged. The research community is approaching the means to finally target these cells, to prevent fibrosis, accelerate scarless wound healing, and attenuate associated disease-processes in clinical settings. This comprehensive review article describes the myofibroblast cell phenotype, their origins, and their diverse physiological and pathological functionality. Special attention has been given to mechanisms and molecular pathways governing myofibroblast differentiation, and updates in molecular interventions.
Collapse
|
6
|
FSTL1 aggravates cigarette smoke-induced airway inflammation and airway remodeling by regulating autophagy. BMC Pulm Med 2021; 21:45. [PMID: 33509151 PMCID: PMC7841997 DOI: 10.1186/s12890-021-01409-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 01/13/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Cigarette smoke (CS) is a major risk factor for Chronic Obstructive Pulmonary Disease (COPD). Follistatin-like protein 1 (FSTL1), a critical factor during embryogenesis particularly in respiratory lung development, is a novel mediator related to inflammation and tissue remodeling. We tried to investigate the role of FSTL1 in CS-induced autophagy dysregulation, airway inflammation and remodeling. METHODS Serum and lung specimens were obtained from COPD patients and controls. Adult female wild-type (WT) mice, FSTL1± mice and FSTL1flox/+ mice were exposed to room air or chronic CS. Additionally, 3-methyladenine (3-MA), an inhibitor of autophagy, was applied in CS-exposed WT mice. The lung tissues and serum from patients and murine models were tested for FSTL1 and autophagy-associated protein expression by ELISA, western blotting and immunohistochemical. Autophagosome were observed using electron microscope technology. LTB4, IL-8 and TNF-α in bronchoalveolar lavage fluid of mice were examined using ELISA. Airway remodeling and lung function were also assessed. RESULTS Both FSTL1 and autophagy biomarkers increased in COPD patients and CS-exposed WT mice. Autophagy activation was upregulated in CS-exposed mice accompanied by airway remodeling and airway inflammation. FSTL1± mice showed a lower level of CS-induced autophagy compared with the control mice. FSTL1± mice can also resist CS-induced inflammatory response, airway remodeling and impaired lung function. CS-exposed WT mice with 3-MA pretreatment have a similar manifestation with CS-exposed FSTL1± mice. CONCLUSIONS FSTL1 promotes CS-induced COPD by modulating autophagy, therefore targeting FSTL1 and autophagy may shed light on treating cigarette smoke-induced COPD.
Collapse
|
7
|
Fu H, Xue Y, Su F, Ding K, Wang Y, Yu H, Zhu J, Li Q, Ge C, Zheng X. Plasma Proteins as Biomarkers of Mortality After Total Body Irradiation in Mice. Dose Response 2020; 18:1559325820920141. [PMID: 32341685 PMCID: PMC7171989 DOI: 10.1177/1559325820920141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/28/2020] [Accepted: 03/28/2020] [Indexed: 11/21/2022] Open
Abstract
During large-scale acute radiation exposure, rapidly distinguishing exposed individuals from nonexposed individuals is necessary. Identifying those exposed to high and potentially lethal radiation doses, and in need of immediate treatment, is especially important. To address this and find plasma biomarkers to assess ionizing radiation-induced mortality in the early stages, mice were administered a whole-body lethal dose of γ radiation, and radiation-induced damage was evaluated. Multiple blood biomarkers were screened using an antibody array, followed by validation using enzyme-linked immunoassay. The results revealed that irradiation (IR)-induced mortality in mice and caused body weight and blood platelet losses in deceased mice compared to surviving mice. The levels of certain proteins differed after IR between these 2 groups. Specific proteins in preirradiated mice were also found to potentiate radiosensitivity. Plasma levels of interleukin (IL)-22, urokinase, resistin, and IL-6 were associated with radiation-induced mortality in irradiated mice and may be useful as potential mortality predictors. Our results suggest that estimating the levels of certain plasma proteins is a promising alternative to conventional cytogenetic biodosimetry to accurately identify individuals exposed to high radiation doses and those at risk of death due to exposure. This strategy would facilitate the rapid triage of individuals requiring immediate and intensive medical treatment.
Collapse
Affiliation(s)
- Hanjiang Fu
- Department of Experimental Hematology and Biochemistry, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, China
| | - Yong Xue
- College of Life Science and Technology, Office of Academic Affairs, Dalian University, Dalian, Liaoning, China
| | - Fei Su
- Department of Experimental Hematology and Biochemistry, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, China
| | - Kexin Ding
- Anhui Medical University, Hefei, Anhui, China
| | - Yuan Wang
- Department of Experimental Hematology and Biochemistry, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, China
| | - Haiyue Yu
- College of Life Science and Technology, Office of Academic Affairs, Dalian University, Dalian, Liaoning, China
| | - Jie Zhu
- Department of Experimental Hematology and Biochemistry, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, China
| | - Qing Li
- College of Life Science and Technology, Office of Academic Affairs, Dalian University, Dalian, Liaoning, China
| | - Changhui Ge
- Department of Experimental Hematology and Biochemistry, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, China.,Anhui Medical University, Hefei, Anhui, China
| | - Xiaofei Zheng
- Department of Experimental Hematology and Biochemistry, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, China.,Anhui Medical University, Hefei, Anhui, China
| |
Collapse
|
8
|
Xu C, Jiang T, Ni S, Chen C, Li C, Zhuang C, Zhao G, Jiang S, Wang L, Zhu R, van Wijnen AJ, Wang Y. FSTL1 promotes nitric oxide-induced chondrocyte apoptosis via activating the SAPK/JNK/caspase3 signaling pathway. Gene 2020; 732:144339. [PMID: 31927008 DOI: 10.1016/j.gene.2020.144339] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 12/22/2019] [Accepted: 01/06/2020] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Previous studies have shown that follistatin-like protein 1 (FSTL1) is elevated in the synovial fluid of osteoarthritis and is associated with disease activity. The experiment was performed to stuy the effect and mechanism of FSTL1 on chondrocyte apoptosis in osteoarthritis. DESIGN After the isolation of human normal and osteoarthritis (OA) chondrocytes, the expression of FSTL1 was detected by Q-PCR and western blot analyses. Chondrocytes were pre-transfected with FSTL1 overexpression plasmids then treated with SNP, and chondrocyte viability and apoptosis levels were detected by MTS and flow cytometry, respectively. Cartilage matrix gene expression was measured by Q-PCR and signal pathway-related proteins were assessed by western blot. RESULTS The expression of FSTL1 in OA chondrocytes was markedly up-regulated compared with normal human chondrocytes (P < 0.05). The apoptosis rate of chondrocytes in the FSTL1 overexpression groups was highly elevated in the comparison with the negative control groups (P < 0.05). Additionally, FSTL1 potentiated protein abundances of MMP1, MMP3, MMP-9, and Bax as well as reduced Coll2a1 and Aggrecan and Bcl-2 expression. Furthermore, western blot results showed that the SAPK/JNK/Caspase3 signal pathway was significantly activated and the Ac-DEVD-FMK impaired FSTL1 induced chondrocyte apoptosis. CONCLUSION FSTL1 promoted SNP-induced chondrocytes apoptosis by activating the SAPK/JNK/Caspase3 signal pathway.
Collapse
Affiliation(s)
- Chao Xu
- Nanjing Medical University, 101Longmian Avenue, Jiangning District, Nanjing 210039, China
| | - Tao Jiang
- Department of Orthopaedics, Changzhou Traditional Chinese Medical Hospital, Affiliated to Nanjing University of Traditional Chinese Medicine, 25 Heping North Road, Changzhou 213003, China
| | - Su Ni
- Medical Research Center, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, 29 Xinglong Alley, Changzhou 213003, China
| | - Chaoqun Chen
- Department of Orthopaedics, Changzhou Traditional Chinese Medical Hospital, Affiliated to Nanjing University of Traditional Chinese Medicine, 25 Heping North Road, Changzhou 213003, China
| | - Chenkai Li
- Medical Research Center, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, 29 Xinglong Alley, Changzhou 213003, China
| | - Chao Zhuang
- Department of Orthopedics, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, 29 Xinglong Alley, Changzhou 213003, China
| | - Gongyin Zhao
- Department of Orthopedics, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, 29 Xinglong Alley, Changzhou 213003, China
| | - Shijie Jiang
- Department of Orthopedics, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, 29 Xinglong Alley, Changzhou 213003, China
| | - Liangliang Wang
- Department of Orthopedics, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, 29 Xinglong Alley, Changzhou 213003, China
| | - Ruixia Zhu
- Department of Orthopedics, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, 29 Xinglong Alley, Changzhou 213003, China
| | - Andre J van Wijnen
- Department of Orthopedic Surgery and Biochemistry & Molecular Biology, Mayo Clinic, Rochester, MN, USA.
| | - Yuji Wang
- Department of Orthopedics, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, 29 Xinglong Alley, Changzhou 213003, China; Department of Orthopedics, The Third Affiliated Hospital of Gansu University of Chinese Medicine, 222 Silong Road, Baiyin 730900, China; Department of Orthopedic Surgery and Biochemistry & Molecular Biology, Mayo Clinic, Rochester, MN, USA.
| |
Collapse
|
9
|
Gong L, Wu X, Li X, Ni X, Gu W, Wang X, Ji H, Hu L, Zhu L. S1PR3 deficiency alleviates radiation-induced pulmonary fibrosis through the regulation of epithelial-mesenchymal transition by targeting miR-495-3p. J Cell Physiol 2019; 235:2310-2324. [PMID: 31489649 DOI: 10.1002/jcp.29138] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Accepted: 08/23/2019] [Indexed: 12/22/2022]
Abstract
Radiation-induced pulmonary fibrosis (RIPF) is a life-threatening complication of thoracic radiotherapy, which contributes to continued deterioration in pulmonary function. Sphingosine-1 phosphate receptor 3 (S1PR3) has been identified as a crucial molecule in fibrosis. Accumulating evidence indicated that the inhibition of the S1PRs ameliorates fibrogenesis. Thus, this study aims to explore whether S1PR3 participates in RIPF and elucidates the molecular mechanisms underlying S1PR3-modulated epithelial-mesenchymal transition (EMT) in transforming growth factor-β1-induced pulmonary epithelia. A recombinant adeno-associated viral-mediated S1PR3 (AAV-S1PR3) gene therapy analyzed the effect of S1PR3 gene deficiency on the altered histology structure and molecular mechanisms in the lung of mice with whole-lung irradiation. Compared with the AAV-negative control mice, AAV-mediated S1PR3 knockdown in the lung of mice attenuated pulmonary fibrosis induced by the radiation, as indicated by the alleviation of collagen accumulation, lessened histopathological alterations, and the suppression of inflammatory cells infiltration. S1PR3 deficiency reversed the RIPF concomitantly with abrogated EMT-related protein (α-smooth muscle actin). Consistently, S1PR3-deficient pulmonary epithelia inhibited the EMT process changes and fibrosis formation. Furthermore, S1PR3 was designated as one of the target genes for microRNA-495-3p (miR-495-3p). The inhibition of miR-495-3p promoted the expression of S1PR3 in pulmonary epithelia, whereas the overexpression of miR-495-3p inhibited the S1PR3/SMAD2/3 pathway and suppressed the EMT process. Collectively, miR-495-3p might be a negative regulator of the EMT process in fibrosis formation by inhibiting the targeted S1PR3 gene. These results established a link between the S1PR3 gene, the EMT process, and the fibrosis, suggesting the pharmacological blockage of S1PR3 as a potential therapeutic strategy for RIPF.
Collapse
Affiliation(s)
- Linjing Gong
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xu Wu
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xinyi Li
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xiaoying Ni
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wenyu Gu
- Department of Urology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xinyuan Wang
- Department of Orthopaedics, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Haiying Ji
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Lijuan Hu
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Lei Zhu
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| |
Collapse
|