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Sun T, Li S, Li X, Lei Y, Wang B, Liu X, Yu S, Li N. Apigenin intervenes in liver fibrosis by regulating PKM2-HIF-1α mediated oxidative stress. Biochem Biophys Res Commun 2024; 721:150130. [PMID: 38761750 DOI: 10.1016/j.bbrc.2024.150130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 05/08/2024] [Accepted: 05/14/2024] [Indexed: 05/20/2024]
Abstract
Apigenin (API) is a natural flavonoid compound with antioxidant, anti fibrotic, anti-inflammatory and other effects, but there is limited research on the effect of API on liver fibrosis. This study aims to explore the effect and potential mechanism of API on liver fibrosis induced by CCl4 in mice. The results indicate that API reduces oxidative stress levels, inhibits hepatic stellate cell (HSC) activation, and exerts anti liver fibrosis effects by regulating the PKM2-HIF-1α pathway. We observed that API alleviated liver tissue pathological damage and collagen deposition in CCl4 induced mouse liver fibrosis model, promoting the recovery of liver function in mice with liver fibrosis. In addition, the API inhibits the transition of Pyruvate kinase isozyme type M2 (PKM2) from dimer to tetramer formation by regulating the EGFR-MEK1/2-ERK1/2 pathway, thereby preventing dimer from entering the nucleus and blocking PKM2-HIF-1α access. This change leads to a decrease in malondialdehyde (MDA) and Catalase (CAT) levels and an increase in glutathione (GSH), superoxide dismutase (SOD), glutathione peroxidase (GSH-PX) levels, as well as total antioxidant capacity (T-AOC) in the liver of liver fibrosis mice. At the same time, API downregulated the expression of α-smooth muscle actin (α-SMA), Vimentin and Desmin in the liver tissue of mice with liver fibrosis, inhibited the activation of HSC, and reduced collagen deposition. These results indicate that API can inhibit HSC activation and alleviate CCl4 induced liver fibrosis by inhibiting the PKM2-HIF-1α pathway and reducing oxidative stress, laying an important foundation for the development and clinical application of API as a novel drug for treating liver fibrosis.
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Affiliation(s)
- Tao Sun
- Department of Internal Medicine, Henan Medical College, Zhengzhou, China
| | - Saifei Li
- Henan University of Chinese Medicine, School of Pharmacy, Zhengzhou, China
| | - Xiaoying Li
- Department of Pathology, Henan Medical College, Zhengzhou, China
| | - Yanfei Lei
- Department of Internal Medicine, Henan Medical College, Zhengzhou, China
| | - Baoying Wang
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou, China
| | - Xianghua Liu
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou, China
| | - Shanfa Yu
- School of Public Health, Henan Medical College, Zhengzhou, China
| | - Ningning Li
- Department of Pathology, Henan Medical College, Zhengzhou, China.
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Miguel V, Alcalde-Estévez E, Sirera B, Rodríguez-Pascual F, Lamas S. Metabolism and bioenergetics in the pathophysiology of organ fibrosis. Free Radic Biol Med 2024; 222:85-105. [PMID: 38838921 DOI: 10.1016/j.freeradbiomed.2024.06.001] [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: 04/07/2024] [Revised: 05/15/2024] [Accepted: 06/02/2024] [Indexed: 06/07/2024]
Abstract
Fibrosis is the tissue scarring characterized by excess deposition of extracellular matrix (ECM) proteins, mainly collagens. A fibrotic response can take place in any tissue of the body and is the result of an imbalanced reaction to inflammation and wound healing. Metabolism has emerged as a major driver of fibrotic diseases. While glycolytic shifts appear to be a key metabolic switch in activated stromal ECM-producing cells, several other cell types such as immune cells, whose functions are intricately connected to their metabolic characteristics, form a complex network of pro-fibrotic cellular crosstalk. This review purports to clarify shared and particular cellular responses and mechanisms across organs and etiologies. We discuss the impact of the cell-type specific metabolic reprogramming in fibrotic diseases in both experimental and human pathology settings, providing a rationale for new therapeutic interventions based on metabolism-targeted antifibrotic agents.
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Affiliation(s)
- Verónica Miguel
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain.
| | - Elena Alcalde-Estévez
- Program of Physiological and Pathological Processes, Centro de Biología Molecular "Severo Ochoa" (CBMSO) (CSIC-UAM), Madrid, Spain; Department of Systems Biology, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, Alcalá de Henares, Spain
| | - Belén Sirera
- Program of Physiological and Pathological Processes, Centro de Biología Molecular "Severo Ochoa" (CBMSO) (CSIC-UAM), Madrid, Spain
| | - Fernando Rodríguez-Pascual
- Program of Physiological and Pathological Processes, Centro de Biología Molecular "Severo Ochoa" (CBMSO) (CSIC-UAM), Madrid, Spain
| | - Santiago Lamas
- Program of Physiological and Pathological Processes, Centro de Biología Molecular "Severo Ochoa" (CBMSO) (CSIC-UAM), Madrid, Spain.
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Zhang Y, Xing M, Meng F, Zhu L, Huang Q, Ma T, Fang H, Gu X, Huang S, Wu X, Lv G, Guo J, Wu L, Liu X, Chen Z. The mechanical mechanism of angiotensin II induced activation of hepatic stellate cells promoting portal hypertension. Eur J Cell Biol 2024; 103:151427. [PMID: 38820882 DOI: 10.1016/j.ejcb.2024.151427] [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: 01/20/2024] [Revised: 05/21/2024] [Accepted: 05/22/2024] [Indexed: 06/02/2024] Open
Abstract
In the development of chronic liver disease, the hepatic stellate cell (HSC) plays a pivotal role in increasing intrahepatic vascular resistance (IHVR) and inducing portal hypertension (PH) in cirrhosis. Our research demonstrated that HSC contraction, prompted by angiotensin II (Ang II), significantly contributed to the elevation of type I collagen (COL1A1) expression. This increase was intimately associated with enhanced cell tension and YAP nuclear translocation, mediated through α-smooth muscle actin (α-SMA) expression, microfilaments (MF) polymerization, and stress fibers (SF) assembly. Further investigation revealed that the Rho/ROCK signaling pathway regulated MF polymerization and SF assembly by facilitating the phosphorylation of cofilin and MLC, while Ca2+ chiefly governed SF assembly via MLC. Inhibiting α-SMA-MF-SF assembly changed Ang II-induced cell contraction, YAP nuclear translocation, and COL1A1 expression, findings corroborated in cirrhotic mice models. Overall, our study offers insights into mitigating IHVR and PH through cell mechanics, heralding potential breakthroughs.
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Affiliation(s)
- Yiheng Zhang
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Mulan Xing
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Fansheng Meng
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Ling Zhu
- State Key Laboratory Cultivation Base For TCM Quality and Efficacy, School of Medicine and Life Science, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Qingchuan Huang
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Tianle Ma
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Huihua Fang
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210004, China
| | - Xujing Gu
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Suzhou Huang
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Xinyu Wu
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Gaohong Lv
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Jun Guo
- State Key Laboratory Cultivation Base For TCM Quality and Efficacy, School of Medicine and Life Science, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Li Wu
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; Engineering Center of State Ministry of Education for Standardization of Chinese Medicine Processing, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China.
| | - Xin Liu
- Department of Pharmacy, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou 215002, China.
| | - Zhipeng Chen
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; Engineering Center of State Ministry of Education for Standardization of Chinese Medicine Processing, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China.
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Kim JW, Kim YJ. The evidence-based multifaceted roles of hepatic stellate cells in liver diseases: A concise review. Life Sci 2024; 344:122547. [PMID: 38460810 DOI: 10.1016/j.lfs.2024.122547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 02/21/2024] [Accepted: 03/04/2024] [Indexed: 03/11/2024]
Abstract
Hepatic stellate cells (HSCs) play central roles in liver disease pathogenesis, spanning steatosis to cirrhosis and hepatocellular carcinoma. These cells, located in the liver's sinusoidal space of Disse, transition from a quiescent, vitamin A-rich state to an activated, myofibroblast-like phenotype in response to liver injury. This activation results from a complex interplay of cytokines, growth factors, and oxidative stress, leading to excessive collagen deposition and liver fibrosis, a hallmark of chronic liver diseases. Recently, HSCs have gained recognition for their dynamic, multifaceted roles in liver health and disease. Attention has shifted toward their involvement in various liver conditions, including acute liver injury, alcoholic and non-alcoholic fatty liver disease, and liver regeneration. This review aims to explore diverse functions of HSCs in these acute or chronic liver pathologies, with a focus on their roles beyond fibrogenesis. HSCs exhibit a wide range of actions, including lipid storage, immunomodulation, and interactions with other hepatic and extrahepatic cells, making them pivotal in the hepatic microenvironment. Understanding HSC involvement in the progression of liver diseases can offer novel insights into pathogenic mechanisms and guide targeted therapeutic strategies for various liver conditions.
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Affiliation(s)
- Jong-Won Kim
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Yu Ji Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Medical School, Jeonbuk National University, Research Institute of Clinical Medicine of Jeonbuk National University - Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea.
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Xiang W, Yin G, Liu H, Wei J, Yu X, Xie Y, Zhang L, XueTang, Jiang W, Lu N. Arctium lappa L. polysaccharides enhanced the therapeutic effects of nasal ectomesenchymal stem cells against liver fibrosis by inhibiting the Wnt/β-catenin pathway. Int J Biol Macromol 2024; 261:129670. [PMID: 38280697 DOI: 10.1016/j.ijbiomac.2024.129670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/14/2024] [Accepted: 01/20/2024] [Indexed: 01/29/2024]
Abstract
The oxidative microenvironment in fibrotic livers often diminishes the effectiveness of mesenchymal stem cells (MSCs)-based therapy. Recent research suggests that pharmacological pre-treatment could enhance the therapeutic performance of MSCs. In this study, we assessed the impact of Arctium lappa L. polysaccharides (ALP) on the biological properties of nasal ectomesenchymal stem cells (EMSCs) and investigated the augmenting effect of ALP pretreatment on EMSCs (ALP-EMSCs) for the treatment of liver fibrosis. ALP treatment demonstrated multiple biological impacts on EMSC functions regarding liver fibrosis: firstly, it maintained the stemness of the cells while boosting the EMSCs' paracrine effects; secondly, it increased the expression of anti-inflammatory and antioxidant factors; thirdly, it inhibited the activation of hepatic stellate cells (HSCs) and liver collagen build-up by modulating the Wnt/β-catenin signaling pathways. Collectively, these effects helped to halt the progression of liver fibrosis. Therefore, the use of ALP-EMSCs presents an innovative and promising approach for treating hepatic fibrosis in clinical scenarios.
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Affiliation(s)
- Wen Xiang
- School of Medicine, Nankai University, Tianjin, China; Department of Liver Transplantation, Tianjin First Central Hospital, Tianjin, China; Tianjin Key Laboratory of Molecular and Treatment of Liver Cancer, Tianjin First Center Hospital, Tianjin, China
| | - Guoliang Yin
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Haoming Liu
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Jiayi Wei
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Xinghui Yu
- School of Medicine, Nankai University, Tianjin, China; Department of Liver Transplantation, Tianjin First Central Hospital, Tianjin, China; Tianjin Key Laboratory of Molecular and Treatment of Liver Cancer, Tianjin First Center Hospital, Tianjin, China
| | - Yan Xie
- Department of Liver Transplantation, Tianjin First Central Hospital, Tianjin, China; Tianjin Key Laboratory of Molecular and Treatment of Liver Cancer, Tianjin First Center Hospital, Tianjin, China
| | - Li Zhang
- Department of Liver Transplantation, Tianjin First Central Hospital, Tianjin, China; Tianjin Key Laboratory of Molecular and Treatment of Liver Cancer, Tianjin First Center Hospital, Tianjin, China
| | - XueTang
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Wentao Jiang
- School of Medicine, Nankai University, Tianjin, China; Department of Liver Transplantation, Tianjin First Central Hospital, Tianjin, China; Tianjin Key Laboratory of Molecular and Treatment of Liver Cancer, Tianjin First Center Hospital, Tianjin, China.
| | - Naiyan Lu
- School of Food Science and Technology, Jiangnan University, Wuxi, China.
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Yuan M, Yao L, Chen P, Wang Z, Liu P, Xiong Z, Hu X, Li L, Jiang Y. Human umbilical cord mesenchymal stem cells inhibit liver fibrosis via the microRNA-148a-5p/SLIT3 axis. Int Immunopharmacol 2023; 125:111134. [PMID: 37918086 DOI: 10.1016/j.intimp.2023.111134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 10/08/2023] [Accepted: 10/23/2023] [Indexed: 11/04/2023]
Abstract
BACKGROUND Human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) have garnered considerable attention as prospective modalities of treatment for liver fibrosis (LF). The inhibition of hepatic stellate cell (HSC) activation underlies the anti-fibrotic effects of hUC-MSCs. However, the precise mechanism by which hUC-MSCs impede HSC activation remains unclarified. We aimed to elucidate the intrinsic mechanisms underlying the therapeutic effects of hUC-MSCs in LF patients. METHODS Mice with liver cirrhosis induced by carbon tetrachloride (CCl4) were used as experimental models and administered hUC-MSCs via tail-vein injection. The alterations in inflammation and fibrosis were evaluated through histopathological examinations. RNA sequencing (RNA-seq) and bioinformatics analysis were then conducted to investigate the therapeutic mechanism of hUC-MSCs. Finally, an in-vitro experiment involving the co-cultivation of hUC-MSCs or hUC-MSC-derived exosomes (MSC-Exos) with LX2 cells was performed to validate the potential mechanism underlying the hepatoprotective effects of hUC-MSCs in LF patients. RESULTS hUC-MSC therapy significantly improved liver function and alleviated LF in CCl4-induced mice. High-throughput RNA-Seq analysis identified 1142 differentially expressed genes that were potentially involved in mediating the therapeutic effects of hUC-MSCs. These genes play an important role in regulating the extracellular matrix. miRNA expression data (GSE151098) indicated that the miR-148a-5p level was downregulated in LF samples, but restored following hUC-MSC treatment. miR-148a-5p was delivered to LX2 cells by hUC-MSCs via the exosome pathway, and the upregulated expression of miR-148a-5p significantly suppressed the expression of the activated phenotype of LX2 cells. SLIT3 was identified within the pool of potential target genes regulated by miR-148a-5p. Furthermore, hUC-MSC administration upregulated the expression of miR-148a-5p, which played a crucial role in suppressing the expression of SLIT3, thereby palliating fibrosis. CONCLUSIONS hUC-MSCs inhibit the activation of HSCs through the miR-148a-5p/SLIT3 pathway and are thus capable of alleviating LF.
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Affiliation(s)
- Mengqin Yuan
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Lichao Yao
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Ping Chen
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Zheng Wang
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Pingji Liu
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Zhiyu Xiong
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Xue Hu
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Lanjuan Li
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310053, China.
| | - Yingan Jiang
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, China.
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Xie Y, Yao J, Yan M, Lin Y, Wei J, Wang H, Mao Y, Liu P, Li X. Pretreatment of UC-MSCs with IFN-α2 improves treatment of liver fibrosis by recruiting neutrophils. J Transl Med 2023; 21:832. [PMID: 37980535 PMCID: PMC10656886 DOI: 10.1186/s12967-023-04732-0] [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: 06/13/2023] [Accepted: 11/13/2023] [Indexed: 11/20/2023] Open
Abstract
BACKGROUND The use of umbilical cord mesenchymal stem cells (UC-MSCs) is a burgeoning method for the treatment of liver cirrhosis. However, the secretory phenotype and regulatory ability of UC-MSCs are easily affected by their microenvironment. Ensuring a specific microenvironment to enhance the UC-MSCs phenotype is a potential strategy for improving their therapeutic efficacy. The aim of this study was to explore therapeutic UC-MSCs phenotypes for improving liver fibrosis. METHODS RNA-sequencing was used to analyze the response pattern of UC-MSCs after exposure to the serum of cirrhotic patients with HBV. Using immunohistochemistry, quantitative polymerase chain reaction, and immunofluorescence techniques, we evaluated the therapeutic effect of UC-MSCs pretreated with interferon alpha 2 (IFN-α2) (pre-MSCs) in an animal model of cirrhosis. Immunoblotting, ELISA, and other techniques were used to analyze the signaling pathways underlying the IFN-induced changes in UC-MSCs. RESULTS UC-MSCs exposed to the serum of patients with hepatitis B-induced cirrhosis showed an enhanced response to type I IFN. The activated type I IFN signal induced the highest secretion of colony-stimulating factor 3 (CSF-3), interleukin (IL)-8, and chemokine (C-C motif) ligand 20 (CCL20) by the UC-MSCs. Pre-MSCs showed a higher therapeutic efficacy than untreated UC-MSCs in an animal model of liver fibrosis. Immunohistochemical analysis revealed that pre-MSCs could recruit neutrophils resulting in an increase in the secretion of matrix metalloprotease 8 that alleviated fibrosis. When neutrophils in animals were depleted, the therapeutic effect of pre-MSCs on fibrosis was inhibited. IFN-α2 altered the secretory phenotype of UC-MSCs by activating phosphorylated signal transducer and activator of transcription 1 and 2 (p-STAT1 and p-STAT2). CONCLUSIONS Pre-MSCs exhibited enhanced secretion of CSF-3, IL-8, and CCL20 and recruited neutrophils to alleviate fibrosis. This new strategy can improve cell therapy for liver cirrhosis.
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Affiliation(s)
- Ye Xie
- The First Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Jia Yao
- Key Laboratory of Biotherapy and Regenerative Medicine of Gansu Province, Lanzhou, China
| | - Mengchao Yan
- The First Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Yan Lin
- The First Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Jiayun Wei
- The First Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Haiping Wang
- Key Laboratory of Biotherapy and Regenerative Medicine of Gansu Province, Lanzhou, China
| | - Yongcui Mao
- The First Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Pinyan Liu
- The First Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Xun Li
- The First Clinical Medical College, Lanzhou University, Lanzhou, China.
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou, China.
- Key Laboratory of Biotherapy and Regenerative Medicine of Gansu Province, Lanzhou, China.
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