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Ellison S, Liao A, Gleitz HF, Parker H, Booth L, Robinson J, Wood S, Taylor J, Holley R, Bigger BW. Sustained long-term disease correction in a murine model of MPSII following stem cell gene therapy. Mol Ther Methods Clin Dev 2023; 31:101127. [PMID: 37920237 PMCID: PMC10618237 DOI: 10.1016/j.omtm.2023.101127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 10/04/2023] [Indexed: 11/04/2023]
Abstract
Mucopolysaccharidosis type II (MPSII) is a pediatric lysosomal storage disease caused by deficiencies in the IDS (iduronate-2-sulfatase) gene resulting in accumulation of glycosaminoglycans, multisystem disease, and profound neurodegeneration in severe forms. Although enzyme replacement therapy is available for somatic forms of disease, the inability of native IDS to pass the blood-brain barrier renders it ineffective for the brain. We previously demonstrated the short-term efficacy of a brain-targeted hematopoietic stem cell gene therapy approach to treat MPSII mice using lentiviral IDS fused to the blood-brain-barrier-crossing peptide ApoEII (IDS.ApoEII) in comparison with a lentivirus expressing native IDS and an unmanipulated bone marrow transplant. Here we evaluated the longevity of disease correction for 12-16 months following treatment. We observed sustained IDS enzyme activity in organs of long-term IDS.ApoEII-treated MPSII mice, similar to those analyzed 6 months post-treatment, with continued clearance of storage material in the brain and peripheral organs, maintained correction of astrogliosis, microgliosis, and correction of altered cytokines and chemokines. IDS.ApoEII also significantly reduced retinal atrophy, characteristic of MPSII. Overall, IDS.ApoEII resulted in systemic prevention of the MPSII phenotype, with no observed toxicity following treatment. This provides evidence of the sustained efficacy and safety of this treatment ahead of a recently opened clinical trial.
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Affiliation(s)
- Stuart Ellison
- Stem Cell & Neurotherapies Group, University of Manchester, Manchester M13 9PT, UK
| | - Aiyin Liao
- Stem Cell & Neurotherapies Group, University of Manchester, Manchester M13 9PT, UK
| | - Hélène F.E. Gleitz
- Stem Cell & Neurotherapies Group, University of Manchester, Manchester M13 9PT, UK
| | - Helen Parker
- Stem Cell & Neurotherapies Group, University of Manchester, Manchester M13 9PT, UK
| | - Laura Booth
- Stem Cell & Neurotherapies Group, University of Manchester, Manchester M13 9PT, UK
| | - John Robinson
- Stem Cell & Neurotherapies Group, University of Manchester, Manchester M13 9PT, UK
| | - Shaun Wood
- Stem Cell & Neurotherapies Group, University of Manchester, Manchester M13 9PT, UK
| | - Jessica Taylor
- Stem Cell & Neurotherapies Group, University of Manchester, Manchester M13 9PT, UK
| | - Rebecca Holley
- Stem Cell & Neurotherapies Group, University of Manchester, Manchester M13 9PT, UK
| | - Brian W. Bigger
- Stem Cell & Neurotherapies Group, University of Manchester, Manchester M13 9PT, UK
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Li S, Zhou X, Chen R, Zhang Q, Sun Y, Chen H. Effect of natural polysaccharides on alcoholic liver disease: A review. Int J Biol Macromol 2023; 251:126317. [PMID: 37595705 DOI: 10.1016/j.ijbiomac.2023.126317] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 08/08/2023] [Accepted: 08/11/2023] [Indexed: 08/20/2023]
Abstract
In this study, we systematically collected relevant literature in the past five years on the intervention of natural polysaccharides in alcoholic liver disease (ALD) and reviewed the pharmacological activities and potential mechanisms of action. Natural polysaccharides are effective in preventing liver tissue degeneration, inhibiting the alcohol-induced expression of inflammatory factors, inactivation of antioxidant enzymes, and abnormal hepatic lipid deposition. Natural polysaccharides regulate the expression of proteins, such as tight junction proteins, production of small molecule metabolites, and balance of intestinal flora in the intestinal tract to alleviate ALD. Natural polysaccharides also exert therapeutic effects by modulating inflammatory, oxidative, lipid metabolism, and other pathways in the liver. Natural polysaccharides also inhibit alcohol-induced intestinal abnormalities by regulating intestinal flora and feeding back into the liver via the gut-liver axis. However, existing research on natural polysaccharides has many shortcomings: for example, most of the natural polysaccharides for testing are total polysaccharides or crude polysaccharides, progress in research on in vivo metabolic processes and mechanisms is slow, and the degree of industrialisation is insufficient. Finally, we discuss the difficulties in studying natural polysaccharides and future directions to provide a theoretical basis for their development and application.
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Affiliation(s)
- Siyu Li
- Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China; Guizhou Engineering Laboratory for Quality Control&Evaluation Technology of Medicine, Guizhou Normal University, Guiyang 550001, China
| | - Xin Zhou
- Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China; Guizhou Engineering Laboratory for Quality Control&Evaluation Technology of Medicine, Guizhou Normal University, Guiyang 550001, China
| | - Ruhai Chen
- Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China; Guizhou Engineering Laboratory for Quality Control&Evaluation Technology of Medicine, Guizhou Normal University, Guiyang 550001, China
| | - Qiurong Zhang
- Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China; Guizhou Engineering Laboratory for Quality Control&Evaluation Technology of Medicine, Guizhou Normal University, Guiyang 550001, China
| | - Yu Sun
- Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China; Guizhou Engineering Laboratory for Quality Control&Evaluation Technology of Medicine, Guizhou Normal University, Guiyang 550001, China
| | - Huaguo Chen
- Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China; Guizhou Engineering Laboratory for Quality Control&Evaluation Technology of Medicine, Guizhou Normal University, Guiyang 550001, China.
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Ma H, Zhang Q, Liang W, Han A, Xie N, Xiang H, Wang X. Short-Term Exposure to PM 2.5 and O 3 Impairs Liver Function in HIV/AIDS Patients: Evidence from a Repeated Measurements Study. TOXICS 2023; 11:729. [PMID: 37755740 PMCID: PMC10537338 DOI: 10.3390/toxics11090729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/11/2023] [Accepted: 08/23/2023] [Indexed: 09/28/2023]
Abstract
Studies investigating the relationship between ambient air pollutants and liver function are scarce. Our objective was to examine the associations of acute exposure to PM2.5 and O3 with levels of hepatic enzymes in people living with HIV/AIDS (PWHA). Our study involved 163 PWHA, who were evaluated for serum hepatic enzymes up to four times within a year. We extracted daily average concentrations of PM2.5, PM2.5 components, and O3 for each participant, based on their residential address, using the Tracking of Air Pollution in China database. Linear mixed-effect models were utilized to assess the associations of acute exposure to PM2.5 and O3 with hepatic enzymes. Weighted quantile sum regression models were employed to identify the major constituents of PM2.5 that affect hepatic enzymes. The percent change of aspartate aminotransferase (AST) concentration was positively correlated with a 10 µg/m3 increase in PM2.5, ranging from 1.92 (95% CI: 3.13 to 4.38) to 6.09 (95% CI: 9.25 to 12.38), with the largest effect observed at lag06. Additionally, acute O3 exposure was related to increased levels of alanine aminotransferase (ALT), AST, and alkaline phosphatase (ALP) concentrations. Co-exposure to high levels of PM2.5 and O3 had an antagonistic effect on the elevation of AST. Further analysis revealed that SO42- and BC were major contributors to elevated AST concentration due to PM2.5 constituents. A stronger association was found between O3 exposure and ALT concentration in female PWHA. Our study found that short-term exposure to PM2.5 and O3 was associated with increased levels of hepatic enzymes, indicating that PM2.5 and O3 exposure may contribute to hepatocellular injury in PWHA. Our study also found that PWHA may be more vulnerable to air pollution than the general population. These findings highlight the relationship between air pollutants and liver function in PWHA, providing a scientific basis for the implementation of measures to protect susceptible populations from the adverse effects of air pollution. A reduction in the burning of fossil fuels and reduced exposure to air pollutants may be effective hazard reduction approaches.
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Affiliation(s)
- Hongfei Ma
- Wuhan Center for Disease Control and Prevention, 288# Machang Road, Wuhan 430024, China
| | - Qian Zhang
- Qingshan District Center for Disease Control and Prevention, 4# Yangang Road, Wuhan 430070, China
| | - Wei Liang
- Department of Global Health, School of Public Health, Wuhan University, 115# Donghu Road, Wuhan 430071, China
| | - Aojing Han
- Department of Global Health, School of Public Health, Wuhan University, 115# Donghu Road, Wuhan 430071, China
| | - Nianhua Xie
- Wuhan Center for Disease Control and Prevention, 288# Machang Road, Wuhan 430024, China
| | - Hao Xiang
- Department of Global Health, School of Public Health, Wuhan University, 115# Donghu Road, Wuhan 430071, China
| | - Xia Wang
- Wuhan Center for Disease Control and Prevention, 288# Machang Road, Wuhan 430024, China
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Jin X, Li Z, Zhang Y, Zhu Y, Su L, Song J, Hao J, Wang D. Protection of Inonotus hispidus (Bull.) P. Karst. against Chronic Alcohol-Induced Liver Injury in Mice via Its Relieving Inflammation Response. Nutrients 2023; 15:3530. [PMID: 37630721 PMCID: PMC10458315 DOI: 10.3390/nu15163530] [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: 07/13/2023] [Revised: 08/09/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
Alcoholic liver disease (ALD) can be induced by excessive alcohol consumption, and has a worldwide age-standardized incidence rate (ASIR) of approximately 5.243%. Inonotus hispidus (Bull.) P. Karst. (IH) is a mushroom with pharmacological effects. In ALD mice, the hepatoprotective effects of IH were investigated. IH strongly ameliorated alcohol-induced pathological changes in the liver, including liver structures and its function-related indices. Intestinal microbiota and serum metabolomics analysis showed that IH altered the associated anti-inflammatory microbiota and metabolites. According to results obtained from Western blot, immunohistochemistry (IHC), and enzyme-linked immunosorbent assay (ELISA), IH downregulated the levels of pro-inflammation factors interleukin (IL)-1β, IL-6 and tumor necrosis factor-α (TNF-α), enhanced the expressions of peroxisome proliferator-activated receptor alpha (PPARα) and 15-hydroxprostaglandin dehydrogenase (15-PGDH), and inhibited the phosphorylated activation of Janus kinase (JAK) 1 and signal transducer and activator of transcription (STAT) 3, confirming the hepatoprotection of IH against alcohol damage via anti-inflammation. This study provides the experimental evidence for the hepatoprotective effects of IH in chronic ALD.
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Affiliation(s)
- Xinghui Jin
- School of Life Sciences, Jilin University, Changchun 130012, China; (X.J.); (Z.L.); (Y.Z.); (Y.Z.)
| | - Zhige Li
- School of Life Sciences, Jilin University, Changchun 130012, China; (X.J.); (Z.L.); (Y.Z.); (Y.Z.)
| | - Yongfeng Zhang
- School of Life Sciences, Jilin University, Changchun 130012, China; (X.J.); (Z.L.); (Y.Z.); (Y.Z.)
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun 130118, China;
| | - Yanfeng Zhu
- School of Life Sciences, Jilin University, Changchun 130012, China; (X.J.); (Z.L.); (Y.Z.); (Y.Z.)
| | - Ling Su
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun 130118, China;
| | - Jiyu Song
- Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun 130021, China;
| | - Jie Hao
- School of Life Sciences, Jilin University, Changchun 130012, China; (X.J.); (Z.L.); (Y.Z.); (Y.Z.)
| | - Di Wang
- School of Life Sciences, Jilin University, Changchun 130012, China; (X.J.); (Z.L.); (Y.Z.); (Y.Z.)
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun 130118, China;
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Pajulas A, Zhang J, Kaplan MH. The World according to IL-9. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:7-14. [PMID: 37339404 PMCID: PMC10287031 DOI: 10.4049/jimmunol.2300094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 02/24/2023] [Indexed: 06/22/2023]
Abstract
Among the cytokines regulating immune cells, IL-9 has gained considerable attention for its ability to act on multiple cell types as a regulator of beneficial and pathologic immune responses. Yet, it is still not clearly defined how IL-9 impacts immune responses. IL-9 demonstrates a remarkable degree of tissue-specific functionality and has cellular sources that vary by tissue site and the context of the inflammatory milieu. Here, we provide perspective to summarize the biological activities of IL-9 and highlight cell type-specific roles in the immune pathogenesis of diseases. This perspective will be important in defining the diseases where targeting IL-9 as a therapeutic strategy would be beneficial and where it has the potential to complicate clinical outcomes.
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Affiliation(s)
- Abigail Pajulas
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Jilu Zhang
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Mark H. Kaplan
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
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Meng H, Jiang L, Jia P, Niu R, Bu F, Zhu Y, Pan X, Li J, Liu J, Zhang Y, Huang C, Lv X, Li J. Inhibition of circular RNA ASPH reduces the proliferation and promotes the apoptosis of hepatic stellate cells in hepatic fibrosis. Biochem Pharmacol 2023; 210:115451. [PMID: 36758707 DOI: 10.1016/j.bcp.2023.115451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/09/2023]
Abstract
Circular RNAs (circRNAs) are a newly identified form of non-coding RNA that play a crucial role in various pathological processes. However, the expression profile and function of circRNAs in hepatic fibrosis (HF) remain largely unknown. In this study, we showed that a novel circRNA ASPH (circASPH) mediates HF by targeting the miR-139-5p/Notch1 axis. We investigated the expression profile of circRNAs in hepatocyte exosomes of mice with HF using circRNA-sequencing and found significant upregulation of circASPH. Loss- and gain-of-function analysis of circASPH was performed to assess its role in HF. Furthermore, we performed luciferase reporter assay, RNA pull-down, and fluorescence in situ hybridization analyses and confirmed that circASPH directly binds to miR-139-5p. We also found that circASPH was upregulated in liver fibrogenesis. Downregulation of circASPH expression inhibited hepatic stellate cell (HSC) activation and proliferation, induced apoptosis, and attenuated mouse liver fibrogenic injury. Mechanistically, circASPH directly targeted miR-139-5p to regulate the expression of Notch1 in HF. Thus, downregulation of circASPH may suppress the activation of HSCs and HF through the circASPH/miR-139-5p/Notch1 axis. Our findings indicated that circASPH may be a potential biomarker for HF diagnosis and therapy.
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Affiliation(s)
- Hongwu Meng
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Lingfeng Jiang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Pengcheng Jia
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Ruowen Niu
- The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - Fangtian Bu
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Yan Zhu
- The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - Xueyin Pan
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Juanjuan Li
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Jinyu Liu
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Yilong Zhang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Cheng Huang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China.
| | - Xiongwen Lv
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China.
| | - Jun Li
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China.
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Xiong W, Qian Z, Mao X, Li J. T lymphocyte-mediated pyroptosis: A new regulatory mechanism in non-viral liver disease. Clin Res Hepatol Gastroenterol 2023; 47:102070. [PMID: 36539180 DOI: 10.1016/j.clinre.2022.102070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022]
Abstract
T lymphocyte-mediated pyroptosis plays an important role in the development of non-viral liver diseases. Pyroptosis as a programmed cell death process, has been a hot topic of research on disease pathogenesis in recent years. As one of the most common immune cells in the body, T cells are the major players in adaptive immunity. An increasing number of studies have shown that T lymphocyte-mediated pyroptosis functions in non-viral liver diseases to regulate immune function, alter the immune microenvironment, and thus influence disease progression. These findings will guide us and provide new ideas for the development of subsequent therapeutic agents for non-viral liver diseases.
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Affiliation(s)
- Wanyuan Xiong
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu Province, China 730000
| | - Zibing Qian
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu Province, China 730000
| | - Xiaorong Mao
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu Province, China 730000; Department of Infectious Disease, The First Hospital of Lanzhou University, Lanzhou, Gansu Province, China 730000.
| | - Junfeng Li
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu Province, China 730000; Institute of Infectious Diseases, The First Hospital of Lanzhou University, Lanzhou, Gansu Province, China 730000.
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Myc-mediated circular RNA circMcph1/miR-370-3p/Irak2 axis is a progressive regulator in hepatic fibrosis. Life Sci 2022; 312:121182. [PMID: 36435226 DOI: 10.1016/j.lfs.2022.121182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/30/2022] [Accepted: 11/08/2022] [Indexed: 11/27/2022]
Abstract
AIMS Treating hepatic fibrosis (HF) is a major challenge worldwide. However, the biological functions and regulatory mechanisms of circular RNAs (circRNAs) remain unclear in HF. The present study aimed to elucidate the novel role of circMcph1 in HF. MAIN METHODS HF mouse model was established by injecting CCl4 intraperitoneally and validated using hematoxylin and eosin staining, immunohistochemistry, and serological tests in vivo. RAW264.7 cells were treated with lipopolysaccharide (LPS) and interferon-γ (IFN-γ) in vitro inflammatory damage model. Gel electrophoresis, DNA sequencing, RNase R and actinomycin D treatment, random 6 primers and oligo dT primers assay, nuclear and cytoplasmic fractionation assay, and fluorescence in situ hybridization were performed to identify the characteristics of circMcph1. Functional assays such as ELISA, flow cytometry, and adeno-associated virus administration in vivo and liposome delivery gene therapy in vitro were used to determine the functional effects of circMcph1/miR-370-3p/interleukin-1 receptor-associated kinase 2 (Irak2) axis. Mechanistic assays such as luciferase reporter analysis, and chromatin immunoprecipitation revealed the molecular mechanism of the Myc/circMcph1/miR-370-3p/Irak2 axis in HF. KEY FINDINGS CircMcph1 expression was upregulated in liver tissues and primary Kupffer cells of CCl4-induced HF mice, as well as in LPS and IFN-γ-treated RAW264.7 cells. Knockdown of circMcph1 ameliorated liver fibrogenesis and inflammatory damage in HF mice and reduced the inflammatory response in LPS and IFN-γ-treated RAW264.7 cells. Mechanically, circMcph1 mediated by Myc regulated the expression of Irak2 by sponging miR-370-3p in HF. SIGNIFICANCE The study findings suggested that the Myc/circMcph1/miR-370-3p/Irak2 axis might be a novel identifier and therapeutic target for HF.
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Serum-derived extracellular vesicles promote the growth and metastasis of non-small cell lung cancer by delivering the m6A methylation regulator HNRNPC through the regulation of DLGAP5. J Cancer Res Clin Oncol 2022:10.1007/s00432-022-04375-6. [PMID: 36175801 DOI: 10.1007/s00432-022-04375-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 09/19/2022] [Indexed: 10/14/2022]
Abstract
PURPOSE Serum-derived extracellular vesicles (EVs) have been reported to play an important role in non-small cell lung cancer (NSCLC). The current study sought to explore the effect of serum-EVs delivering m6A methylation regulator heterogeneous nuclear ribonucleoprotein C (HNRNPC) on the development of NSCLC through the regulation of discs large-associated protein 5 (DLGAP5). METHODS NSCLC-related RNA-Seq and clinical data were first obtained from the TCGA database to screen differentially expressed m6A-related regulators, which were intersected with the differential genes in NSCLC-related microarray GSE43458 obtained from the GEO database for survival analysis and clinical correlation analysis. Correlation between HNRNPC and DLGAP5 expression was evaluated. Serum-EVs were isolated and identified, and the uptake of EVs by A549 cells was visualized using fluorescence microscopy. In vivo xenograft tumor models and tumor metastasis models were constructed in nude mice to observe growth and metastasis of NSCLC cells. RESULTS HNRNPC was associated with poor prognosis and metastasis of NSCLC, and further implicated in the regulation of DNA replication and cell cycle-related pathways. HNRNPC might promote the growth and metastasis of NSCLC by identifying m6A modification of DLGAP5 mRNA. Serum-EVs delivered HNRNPC to NSCLC cells in vitro. In vivo experimentation further confirmed that serum-EVs could deliver HNRNPC to promote the growth and metastasis of NSCLC cells in nude mice. CONCLUSIONS Our findings highlight that serum-EVs can deliver HNRNPC to NSCLC cells, wherein HNRNPC recognizes the m6A modification of DLGAP5 mRNA, thus ultimately promoting NSCLC growth and metastasis.
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