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Wang R, Shi Y, Lv Y, Xie C, Hu Y. The novel insights of epithelial-derived exosomes in various fibrotic diseases. Biomed Pharmacother 2024; 174:116591. [PMID: 38631144 DOI: 10.1016/j.biopha.2024.116591] [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: 01/14/2024] [Revised: 04/07/2024] [Accepted: 04/10/2024] [Indexed: 04/19/2024] Open
Abstract
The characteristics of fibrosis include the abnormal accumulation of extracellular matrix proteins and abnormal tissue repair caused by injury, infection, and inflammation, leading to a significant increase in organ failure and mortality. Effective and precise treatments are urgently needed to halt and reverse the progression of fibrotic diseases. Exosomes are tiny vesicles derived from endosomes, spanning from 40 to 160 nanometers in diameter, which are expelled into the extracellular matrix environment by various cell types. They play a crucial role in facilitating cell-to-cell communication by transporting a variety of cargoes, including proteins, RNA, and DNA. Epithelial cells serve as the primary barrier against diverse external stimuli that precipitate fibrotic diseases. Numerous research suggests that exosomes from epithelial cells have a significant impact on several fibrotic diseases. An in-depth comprehension of the cellular and molecular mechanisms of epithelial cell-derived exosomes in fibrosis holds promise for advancing the exploration of novel diagnostic biomarkers and clinical drug targets. In this review, we expand upon the pathogenic mechanisms of epithelium-derived exosomes and highlight their role in the fibrotic process by inducing inflammation and activating fibroblasts. In addition, we are particularly interested in the bioactive molecules carried by epithelial-derived exosomes and their potential value in the diagnosis and treatment of fibrosis and delineate the clinical utility of exosomes as an emerging therapeutic modality, highlighting their potential application in addressing various medical conditions.
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Affiliation(s)
- Rifu Wang
- Hunan Key Laboratory of Oral Health Research, Hunan 3D Printing Engineering Research Center of Oral Care, Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Hunan Clinical Research Center of Oral Major Diseases and Oral Health, Xiangya Stomatological Hospital, Xiangya School of Stomatology, Central South University, Changsha, Hunan, China
| | - Yuxin Shi
- Hunan Key Laboratory of Oral Health Research, Hunan 3D Printing Engineering Research Center of Oral Care, Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Hunan Clinical Research Center of Oral Major Diseases and Oral Health, Xiangya Stomatological Hospital, Xiangya School of Stomatology, Central South University, Changsha, Hunan, China
| | - Yonglin Lv
- Hunan Key Laboratory of Oral Health Research, Hunan 3D Printing Engineering Research Center of Oral Care, Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Hunan Clinical Research Center of Oral Major Diseases and Oral Health, Xiangya Stomatological Hospital, Xiangya School of Stomatology, Central South University, Changsha, Hunan, China
| | - Changqing Xie
- Hunan Key Laboratory of Oral Health Research, Hunan 3D Printing Engineering Research Center of Oral Care, Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Hunan Clinical Research Center of Oral Major Diseases and Oral Health, Xiangya Stomatological Hospital, Xiangya School of Stomatology, Central South University, Changsha, Hunan, China; NHC Key Laboratory of Carcinogenesis, Cancer Research Institute, School of Basic Medicine, Central South University, Changsha, Hunan, China.
| | - Yanjia Hu
- Hunan Key Laboratory of Oral Health Research, Hunan 3D Printing Engineering Research Center of Oral Care, Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Hunan Clinical Research Center of Oral Major Diseases and Oral Health, Xiangya Stomatological Hospital, Xiangya School of Stomatology, Central South University, Changsha, Hunan, China.
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2
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Xu L, Dai Q, Zhang Y, Lin N, Ji L, Song X. Prospects for the Application of Transplantation With Human Amniotic Membrane Epithelial Stem Cells in Systemic Lupus Erythematosus. Cell Transplant 2024; 33:9636897241236586. [PMID: 38469823 PMCID: PMC10935745 DOI: 10.1177/09636897241236586] [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: 11/20/2023] [Revised: 02/13/2024] [Accepted: 02/14/2024] [Indexed: 03/13/2024] Open
Abstract
Systemic lupus erythematosus (SLE) is a multi-organ and systemic autoimmune disease characterized by an imbalance of humoral and cellular immunity. The efficacy and side effects of traditional glucocorticoid and immunosuppressant therapy remain controversial. Recent studies have revealed abnormalities in mesenchymal stem cells (MSCs) in SLE, leading to the application of bone marrow-derived MSCs (BM-MSCs) transplantation technique for SLE treatment. However, autologous transplantation using BM-MSCs from SLE patients has shown suboptimal efficacy due to their dysfunction, while allogeneic mesenchymal stem cell transplantation (MSCT) still faces challenges, such as donor degeneration, genetic instability, and immune rejection. Therefore, exploring new sources of stem cells is crucial for overcoming these limitations in clinical applications. Human amniotic epithelial stem cells (hAESCs), derived from the eighth-day blastocyst, possess strong characteristics including good differentiation potential, immune tolerance with low antigen-presenting ability, and unique immune properties. Hence, hAESCs hold great promise for the treatment of not only SLE but also other autoimmune diseases.
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Affiliation(s)
- Liping Xu
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, China
- Department of Rheumatology and Immunology, Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine affiliated to Zhejiang Chinese Medicine University, Wenzhou, Zhejiang, China
| | - Qiaoding Dai
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, China
| | - Yan Zhang
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, China
| | - Na Lin
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, China
| | - Lina Ji
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, China
| | - Xinwei Song
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, China
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3
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Biniazan F, Rajaei F, Darabi S, Babajani A, Mashayekhi M, Vousooghi N, Abdollahifar MA, Salimi M, Niknejad H. Effects of Placenta-Derived Human Amniotic Epithelial Cells on the Wound Healing Process and TGF-β Induced Scar Formation in Murine Ischemic-Reperfusion Injury Model. Stem Cell Rev Rep 2022; 18:2045-2058. [PMID: 35303271 DOI: 10.1007/s12015-022-10355-7] [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] [Accepted: 02/08/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND Pressure ulcers (PUs), a result of ischemic reperfusion (IR) injuries, are prevalent skin problems which show refractoriness against standard therapeutic approaches. Besides, scar formation is a critical complication of ulcers that affects functionality and the skin's cosmetic aspect. The current study aimed to investigate the effects of placenta-derived human amniotic epithelial cells (hAECs), as important agents of regenerative medicine and stem cell therapy, on accelerating the healing of IR ulcers in mice. We also evaluated the effects of these cells on reducing the TGFβ-induced scar formation. METHODS Male Balb/c mice at the age of 6-8 weeks were subjected to three IR cycles. Afterward, the mice were divided into three experimental groups (n = 6 per group), including the control group, vehicle group, and hAECs treatment group. Mice of the treatment group received 100 μL of fresh hAECs 1 × 106 cell/ml suspension in PBS. Afterward, mice were assessed by histological, stereological, molecular, and western blotting techniques at 3, 7, 14, and 21 days after wounding. RESULTS The histological and stereological results showed the most diminutive scar formation and better healing in the hAECs treated group compared to control group. Furthermore, our results demonstrated that the expression level of Col1A1 on days 3, 14, and 21 in the hAECs treated group was significantly lower than control. Additionally, injection of hAECs significantly reduced the expression level of Col3A1 on days 3, 7, and 21 while increased Col3A1 on the day 14. Otherwise, in the hAECs treated group, the expression levels of VEGFA on days 7 and 14 were higher, which showed that hAECs could promote angiogenesis and wound healing. Also, cell therapy significantly lowered the protein levels of TGF-β1 on day 14, while the protein level of TGF-β3 on day 14 was significantly higher. This data could demonstrate the role of hAECs in scar reduction in IR wounds. CONCLUSION These results suggest that hAECs can promote re-epithelialization and wound closure in an animal model of PU. They also reduced scar formation during wound healing by reducing the expression of TGF-β1/ TGF-β3 ratio.
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Affiliation(s)
- Felor Biniazan
- Cellular and Molecular Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Farzad Rajaei
- Cellular and Molecular Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran.
| | - Shahram Darabi
- Cellular and Molecular Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Amirhesam Babajani
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahboubeh Mashayekhi
- Department of Internal Medicine, Shahid Modarres Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nasim Vousooghi
- Department of Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad-Amin Abdollahifar
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Salimi
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hassan Niknejad
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Fathi I, Miki T. Human Amniotic Epithelial Cells Secretome: Components, Bioactivity, and Challenges. Front Med (Lausanne) 2022; 8:763141. [PMID: 35083233 PMCID: PMC8784524 DOI: 10.3389/fmed.2021.763141] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 11/29/2021] [Indexed: 11/13/2022] Open
Abstract
Human amniotic epithelial cells (hAECs) derived from placental tissue have received significant attention as a promising tool in regenerative medicine. Several studies demonstrated their anti-inflammatory, anti-fibrotic, and tissue repair potentials. These effects were further shown to be retained in the conditioned medium of hAECs, suggesting their paracrine nature. The concept of utilizing the hAEC-secretome has thus evolved as a therapeutic cell-free option. In this article, we review the different components and constituents of hAEC-secretome and their influence as demonstrated through experimental studies in the current literature. Studies examining the effects of conditioned medium, exosomes, and micro-RNA (miRNA) derived from hAECs are included in this review. The challenges facing the application of this cell-free approach will also be discussed based on the current evidence.
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Affiliation(s)
- Ibrahim Fathi
- Department of Physiology, Nihon University School of Medicine, Tokyo, Japan
| | - Toshio Miki
- Department of Physiology, Nihon University School of Medicine, Tokyo, Japan
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5
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Goonetilleke M, Kuk N, Correia J, Hodge A, Moore G, Gantier MP, Yeoh G, Sievert W, Lim R. Addressing the liver progenitor cell response and hepatic oxidative stress in experimental non-alcoholic fatty liver disease/non-alcoholic steatohepatitis using amniotic epithelial cells. Stem Cell Res Ther 2021; 12:429. [PMID: 34321089 PMCID: PMC8317377 DOI: 10.1186/s13287-021-02476-6] [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: 10/26/2020] [Accepted: 06/26/2021] [Indexed: 12/29/2022] Open
Abstract
Background Non-alcoholic fatty liver disease is the most common liver disease globally and in its inflammatory form, non-alcoholic steatohepatitis (NASH), can progress to cirrhosis and hepatocellular carcinoma (HCC). Currently, patient education and lifestyle changes are the major tools to prevent the continued progression of NASH. Emerging therapies in NASH target known pathological processes involved in the progression of the disease including inflammation, fibrosis, oxidative stress and hepatocyte apoptosis. Human amniotic epithelial cells (hAECs) were previously shown to be beneficial in experimental models of chronic liver injury, reducing hepatic inflammation and fibrosis. Previous studies have shown that liver progenitor cells (LPCs) response plays a significant role in the development of fibrosis and HCC in mouse models of fatty liver disease. In this study, we examined the effect hAECs have on the LPC response and hepatic oxidative stress in an experimental model of NASH. Methods Experimental NASH was induced in C57BL/6 J male mice using a high-fat, high fructose diet for 42 weeks. Mice received either a single intraperitoneal injection of 2 × 106 hAECs at week 34 or an additional hAEC dose at week 38. Changes to the LPC response and oxidative stress regulators were measured. Results hAEC administration significantly reduced the expansion of LPCs and their mitogens, IL-6, IFNγ and TWEAK. hAEC administration also reduced neutrophil infiltration and myeloperoxidase production with a concurrent increase in heme oxygenase-1 production. These observations were accompanied by a significant increase in total levels of anti-fibrotic IFNβ in mice treated with a single dose of hAECs, which appeared to be independent of c-GAS-STING activation. Conclusions Expansion of liver progenitor cells, hepatic inflammation and oxidative stress associated with experimental NASH were attenuated by hAEC administration. Given that repeated doses did not significantly increase efficacy, future studies assessing the impact of dose escalation and/or timing of dose may provide insights into clinical translation. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-021-02476-6.
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Affiliation(s)
- Mihiri Goonetilleke
- Centre for Inflammatory Disease, School of Clinical Sciences, Monash University, Melbourne, Victoria, Australia.,The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Victoria, Australia
| | - Nathan Kuk
- Centre for Inflammatory Disease, School of Clinical Sciences, Monash University, Melbourne, Victoria, Australia.,Gastroenterology and Hepatology Unit, Monash Health, Melbourne, Victoria, Australia
| | - Jeanne Correia
- Centre for Inflammatory Disease, School of Clinical Sciences, Monash University, Melbourne, Victoria, Australia.,The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Victoria, Australia.,Gastroenterology and Hepatology Unit, Monash Health, Melbourne, Victoria, Australia
| | - Alex Hodge
- Centre for Inflammatory Disease, School of Clinical Sciences, Monash University, Melbourne, Victoria, Australia.,Gastroenterology and Hepatology Unit, Monash Health, Melbourne, Victoria, Australia
| | - Gregory Moore
- Centre for Inflammatory Disease, School of Clinical Sciences, Monash University, Melbourne, Victoria, Australia.,Gastroenterology and Hepatology Unit, Monash Health, Melbourne, Victoria, Australia
| | - Michael P Gantier
- Department of Molecular and Translational Science, Monash University, Clayton, Victoria, Australia.,Centre for Innate Immunity and Infectious Disease, Hudson Institute of Medical Research, Melbourne, Victoria, Australia
| | - George Yeoh
- Centre for Medical Research, Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia, Australia.,School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, Australia.,Centre for Cell Therapy and Regenerative Medicine, School of Biomedical Sciences, The University of Western Australia, Crawley, Western Australia, Australia
| | - William Sievert
- Centre for Inflammatory Disease, School of Clinical Sciences, Monash University, Melbourne, Victoria, Australia.,Gastroenterology and Hepatology Unit, Monash Health, Melbourne, Victoria, Australia
| | - Rebecca Lim
- The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Victoria, Australia. .,Department of Obstetrics and Gynaecology, Monash University, Melbourne, Victoria, Australia.
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6
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Hodge A, Andrewartha N, Lourensz D, Strauss R, Correia J, Goonetilleke M, Yeoh G, Lim R, Sievert W. Human Amnion Epithelial Cells Produce Soluble Factors that Enhance Liver Repair by Reducing Fibrosis While Maintaining Regeneration in a Model of Chronic Liver Injury. Cell Transplant 2021; 29:963689720950221. [PMID: 32813573 PMCID: PMC7563845 DOI: 10.1177/0963689720950221] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Human amnion epithelial cells (hAECs) exert potent antifibrotic and anti-inflammatory effects when transplanted into preclinical models of tissue fibrosis. These effects are mediated in part via the secretion of soluble factors by hAECs which modulate signaling pathways and affect cell types involved in inflammation and fibrosis. Based on these reports, we hypothesized that these soluble factors may also support liver regeneration during chronic liver injury. To test this, we characterized the effect of both hAECs and hAEC-conditioned medium (CM) on liver repair in a mouse model of carbon tetrachloride (CCl4)-induced fibrosis. Liver repair was assessed by liver fibrosis, hepatocyte proliferation, and the liver progenitor cell (LPC) response. We found that the administration of hAECs or hAEC-CM reduced liver injury and fibrosis, sustained hepatocyte proliferation, and reduced LPC numbers during chronic liver injury. Additionally, we undertook in vitro studies to document both the cell-cell and paracrine-mediated effects of hAECs on LPCs by investigating the effects of co-culturing the LPCs and hAECs and hAEC-CM on LPCs. We found little change in LPCs co-cultured with hAECs. In contrast, hAEC-CM enhances LPC proliferation and differentiation. These findings suggest that paracrine factors secreted by hAECs enhance liver repair by reducing fibrosis while promoting regeneration during chronic liver injury.
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Affiliation(s)
- Alexander Hodge
- Gastroenterology and Hepatology Unit, 2538Monash Health, Melbourne, Victoria, Australia.,Centre for Inflammatory Disease, School of Clinical Sciences, 2538Monash University, Melbourne, Victoria, Australia.,Both the authors contributed equally to this article
| | - Neil Andrewartha
- Centre for Medical Research, 102804Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia, Australia.,School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, Australia.,Both the authors contributed equally to this article
| | - Dinushka Lourensz
- Gastroenterology and Hepatology Unit, 2538Monash Health, Melbourne, Victoria, Australia.,Centre for Inflammatory Disease, School of Clinical Sciences, 2538Monash University, Melbourne, Victoria, Australia
| | - Robyn Strauss
- Centre for Medical Research, 102804Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia, Australia.,School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, Australia
| | - Jeanne Correia
- Gastroenterology and Hepatology Unit, 2538Monash Health, Melbourne, Victoria, Australia.,Centre for Inflammatory Disease, School of Clinical Sciences, 2538Monash University, Melbourne, Victoria, Australia
| | - Mihiri Goonetilleke
- Department of Obstetrics and Gynaecology, School of Clinical Sciences, 2541Monash University, Melbourne, Victoria, Australia.,568369The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Victoria, Australia
| | - George Yeoh
- Centre for Medical Research, 102804Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia, Australia.,School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, Australia.,Centre for Cell Therapy and Regenerative Medicine, School of Biomedical Sciences, The University of Western Australia, Crawley, Western Australia, Australia
| | - Rebecca Lim
- Department of Obstetrics and Gynaecology, School of Clinical Sciences, 2541Monash University, Melbourne, Victoria, Australia.,568369The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Victoria, Australia
| | - William Sievert
- Gastroenterology and Hepatology Unit, 2538Monash Health, Melbourne, Victoria, Australia.,Centre for Inflammatory Disease, School of Clinical Sciences, 2538Monash University, Melbourne, Victoria, Australia
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Wu D, Zhou J, Tan M, Zhou Y. LINC01116 regulates proliferation, migration, and apoptosis of keloid fibroblasts by the TGF-β1/SMAD3 signaling via targeting miR-3141. Anal Biochem 2021; 627:114249. [PMID: 34048784 DOI: 10.1016/j.ab.2021.114249] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/23/2021] [Accepted: 05/07/2021] [Indexed: 11/20/2022]
Abstract
BACKGROUND Keloids are benign fibroproliferative skin tumors. Long non-coding RNAs (lncRNAs) have been implicated in the pathogenesis of keloid formation. In this paper, we explored the precise actions of LINC01116 in keloid formation. METHODS The targeted relationship between microRNA (miR)-3141 and LINC01116 or transforming growth factor β1 (TGF-β1) was verified by dual-luciferase reporter, RNA immunoprecipitation (RIP), and RNA pull-down assays. The expression levels of LINC01116, miR-3141, TGF-β1, and SMAD family member 3 (SMAD3) were gauged by quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot. Cell proliferation, migration, and apoptosis were assessed by the Cell Counting Kit-8 (CCK-8) assay, wound-healing assay, and flow cytometry, respectively. Animal studies were used to assess the role of LINC01116 in the subcutaneous keloid growth in vivo. RESULTS Our data showed that LINC01116 targeted miR-3141 by directly binding to miR-3141. LINC01116 was up-regulated and miR-3141 was down-regulated in human keloid tissues and fibroblasts. LINC01116 knockdown or miR-3141 overexpression suppressed keloid fibroblast proliferation, migration, and promoted cell apoptosis. Moreover, miR-3141 was a downstream mediator of LINC01116 function. MiR-3141 regulated the TGF-β1/SMAD3 signaling by directly targeting TGF-β1. Furthermore, TGF-β1 was identified as a direct and functional target of miR-3141. LINC01116 regulated the TGF-β1/SMAD3 signaling through miR-3141. Additionally, LINC01116 knockdown diminished the subcutaneous keloid growth in vivo. CONCLUSION Our findings demonstrated a novel mechanism, the miR-3141/TGF-β1/SMAD3 regulatory pathway, at least partially for the oncogenic role of LINC01116 in keloid formation.
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Affiliation(s)
- Dan Wu
- Department of Plastic and Cosmetic Surgery, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430070, China
| | - JinJie Zhou
- Department of Dermatology, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430070, China.
| | - Ming Tan
- Department of Plastic and Cosmetic Surgery, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430070, China
| | - Yanshijing Zhou
- Department of Plastic and Cosmetic Surgery, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430070, China
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8
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Liu QW, Huang QM, Wu HY, Zuo GSL, Gu HC, Deng KY, Xin HB. Characteristics and Therapeutic Potential of Human Amnion-Derived Stem Cells. Int J Mol Sci 2021; 22:ijms22020970. [PMID: 33478081 PMCID: PMC7835733 DOI: 10.3390/ijms22020970] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 01/06/2021] [Accepted: 01/14/2021] [Indexed: 02/08/2023] Open
Abstract
Stem cells including embryonic stem cells (ESCs), induced pluripotent stem cells (iPSCs) and adult stem cells (ASCs) are able to repair/replace damaged or degenerative tissues and improve functional recovery in experimental model and clinical trials. However, there are still many limitations and unresolved problems regarding stem cell therapy in terms of ethical barriers, immune rejection, tumorigenicity, and cell sources. By reviewing recent literatures and our related works, human amnion-derived stem cells (hADSCs) including human amniotic mesenchymal stem cells (hAMSCs) and human amniotic epithelial stem cells (hAESCs) have shown considerable advantages over other stem cells. In this review, we first described the biological characteristics and advantages of hADSCs, especially for their high pluripotency and immunomodulatory effects. Then, we summarized the therapeutic applications and recent progresses of hADSCs in treating various diseases for preclinical research and clinical trials. In addition, the possible mechanisms and the challenges of hADSCs applications have been also discussed. Finally, we highlighted the properties of hADSCs as a promising source of stem cells for cell therapy and regenerative medicine and pointed out the perspectives for the directions of hADSCs applications clinically.
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Affiliation(s)
- Quan-Wen Liu
- The National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang 330031, China; (Q.-W.L.); (Q.-M.H.); (H.-Y.W.); (G.-S.-L.Z.); (H.-C.G.); (K.-Y.D.)
| | - Qi-Ming Huang
- The National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang 330031, China; (Q.-W.L.); (Q.-M.H.); (H.-Y.W.); (G.-S.-L.Z.); (H.-C.G.); (K.-Y.D.)
- School of Life and Science, Nanchang University, Nanchang 330031, China
| | - Han-You Wu
- The National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang 330031, China; (Q.-W.L.); (Q.-M.H.); (H.-Y.W.); (G.-S.-L.Z.); (H.-C.G.); (K.-Y.D.)
| | - Guo-Si-Lang Zuo
- The National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang 330031, China; (Q.-W.L.); (Q.-M.H.); (H.-Y.W.); (G.-S.-L.Z.); (H.-C.G.); (K.-Y.D.)
| | - Hao-Cheng Gu
- The National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang 330031, China; (Q.-W.L.); (Q.-M.H.); (H.-Y.W.); (G.-S.-L.Z.); (H.-C.G.); (K.-Y.D.)
- School of Life and Science, Nanchang University, Nanchang 330031, China
| | - Ke-Yu Deng
- The National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang 330031, China; (Q.-W.L.); (Q.-M.H.); (H.-Y.W.); (G.-S.-L.Z.); (H.-C.G.); (K.-Y.D.)
- School of Life and Science, Nanchang University, Nanchang 330031, China
| | - Hong-Bo Xin
- The National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang 330031, China; (Q.-W.L.); (Q.-M.H.); (H.-Y.W.); (G.-S.-L.Z.); (H.-C.G.); (K.-Y.D.)
- School of Life and Science, Nanchang University, Nanchang 330031, China
- Correspondence: ; Tel.: +86-791-8396-9015
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9
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Michalik M, Gładyś A, Czekaj P. Differentiation of Cells Isolated from Afterbirth Tissues into Hepatocyte-Like Cells and Their Potential Clinical Application in Liver Regeneration. Stem Cell Rev Rep 2020; 17:581-603. [PMID: 32974851 PMCID: PMC8036182 DOI: 10.1007/s12015-020-10045-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/16/2020] [Indexed: 12/11/2022]
Abstract
Toxic, viral and surgical injuries can pose medical indications for liver transplantation. The number of patients waiting for a liver transplant still increases, but the number of organ donors is insufficient. Hepatocyte transplantation was suggested as a promising alternative to liver transplantation, however, this method has some significant limitations. Currently, afterbirth tissues seem to be an interesting source of cells for the regenerative medicine, because of their unique biological and immunological properties. It has been proven in experimental animal models, that the native stem cells, and to a greater extent, hepatocyte-like cells derived from them and transplanted, can accelerate regenerative processes and restore organ functioning. The effective protocol for obtaining functional mature hepatocytes in vitro is still not defined, but some studies resulted in obtaining functionally active hepatocyte-like cells. In this review, we focused on human stem cells isolated from placenta and umbilical cord, as potent precursors of hepatocyte-like cells for regenerative medicine. We summarized the results of preclinical and clinical studies dealing with the introduction of epithelial and mesenchymal stem cells of the afterbirth origin to the liver failure therapy. It was concluded that the use of native afterbirth epithelial and mesenchymal cells in the treatment of liver failure could support liver function and regeneration. This effect would be enhanced by the use of hepatocyte-like cells obtained from placental and/or umbilical stem cells. Graphical abstract ![]()
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Affiliation(s)
- Marcin Michalik
- Department of Cytophysiology, Faculty of Medical Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland
| | - Aleksandra Gładyś
- Department of Cytophysiology, Faculty of Medical Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland
| | - Piotr Czekaj
- Department of Cytophysiology, Faculty of Medical Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland.
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CircRNA TADA2A relieves idiopathic pulmonary fibrosis by inhibiting proliferation and activation of fibroblasts. Cell Death Dis 2020; 11:553. [PMID: 32694556 PMCID: PMC7374112 DOI: 10.1038/s41419-020-02747-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 07/01/2020] [Accepted: 07/03/2020] [Indexed: 11/09/2022]
Abstract
The excessive activation and proliferation of lung fibroblasts are responsible for the abundant deposition of extracellular matrix (ECM) in idiopathic pulmonary fibrosis (IPF), while its specific mechanism is still unknown. This study focuses on the role of circRNA (circ) TADA2A in functional abnormalities of lung fibroblasts and aims to elaborate its regulatory mechanism. In the present study, circTADA2A was downregulated in both IPF primary human lung fibroblasts and human IPF fibroblastic cell lines. Functionally, the overexpression of circTADA2A repressed the activation and proliferation of normal human fibroblastic cell line induced by several fibrogenic growth factors. Using fluorescence in situ hybridization (FISH), luciferase reporter assays, and RNA pull-down, circTADA2A was confirmed to function as sponges of miR-526b and miR-203, thus releasing the expression of Caveolin (Cav)-1 and Cav2. The overexpression of circTADA2A suppressed lung-fibroblasts activation via Cav1 and reduced lung-fibroblasts proliferation via Cav2. In vivo experiments also confirmed that the overexpression of circTADA2A decreased fibrogenic responses induced by bleomycin in lung-fibrosis mice. Collectively, circTADA2A repressed lung-fibroblasts activation via miR-526b/Cav1 and reduced lung-fibroblasts proliferation via miR-203/Cav2, thus inhibiting the excessive deposition of ECM and relieving IPF.
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11
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Human Amnion Epithelial Cell Therapy for Chronic Liver Disease. Stem Cells Int 2019; 2019:8106482. [PMID: 31485235 PMCID: PMC6702811 DOI: 10.1155/2019/8106482] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 07/24/2019] [Indexed: 12/15/2022] Open
Abstract
Liver fibrosis is a common consequence of chronic liver disease. Over time, liver fibrosis can develop into liver cirrhosis. Current therapies for liver fibrosis are limited, and liver transplant is the only curative therapy for patients who progress to end-stage disease. A potential approach to treat chronic liver disease with increasing interest is cell-based therapy. Among the multiple cell types which have been proposed for therapeutic uses, human amnion epithelial cells and amniotic fluid-derived mesenchymal cells are promising. These cells are highly abundant, and their use poses no ethical concern. Furthermore, they exert potent anti-inflammatory and antifibrotic effects in animal models of liver injury. This review highlights the therapeutic characteristics and discusses how human amnion epithelial cells can be utilised as a therapeutic tool for chronic liver disease.
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12
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Park U, Lee MS, Jeon J, Lee S, Hwang MP, Wang Y, Yang HS, Kim K. Coacervate-mediated exogenous growth factor delivery for scarless skin regeneration. Acta Biomater 2019; 90:179-191. [PMID: 30936036 DOI: 10.1016/j.actbio.2019.03.052] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 03/12/2019] [Accepted: 03/25/2019] [Indexed: 11/19/2022]
Abstract
Although there are numerous medical applications to recover damaged skin tissue, scarless wound healing is being extensively investigated to provide a better therapeutic outcome. The exogenous delivery of therapeutic growth factors (GFs) is one of the engineering strategies for skin regeneration. This study presents an exogenous GF delivery platform developed using coacervates (Coa), a tertiary complex of poly(ethylene argininyl aspartate diglyceride) (PEAD) polycation, heparin, and cargo GFs (i.e., transforming growth factor beta 3 (TGF-β3) and interleukin 10 (IL-10)). Coa encompasses the advantage of high biocompatibility, facile preparation, protection of cargo GFs, and sustained GF release. We therefore speculated that coacervate-mediated dual delivery of TGF-β3/IL-10 would exhibit synergistic effects for the reduction of scar formation during physiological wound healing. Our results indicate that the exogenous administration of dual GF via Coa enhances the proliferation and migration of skin-related cells. Gene expression profiles using RT-PCR revealed up-regulation of ECM formation at early stage of wound healing and down-regulation of scar-related genes at later stages. Furthermore, direct injection of the dual GF Coa into the edges of damaged skin in a rat skin wound defect model demonstrated accelerated wound closure and skin regeneration after 3 weeks. Histological evaluation and immunohistochemical staining also revealed enhanced formation of the epidermal layer along with facilitated angiogenesis following dual GF Coa delivery. Based on these results, we conclude that polycation-mediated Coa fabrication and exogenous dual GF delivery via the Coa platform effectively augments both the quantity and quality of regenerated skin tissues without scar formation. STATEMENT OF SIGNIFICANCE: This study was conducted to develop a simple administration platform for scarless skin regeneration using polycation-based coacervates with dual GFs. Both in vitro and in vivo studies were performed to confirm the therapeutic efficacy of this platform toward scarless wound healing. Our results demonstrate that the platform developed by us enhances the proliferation and migration of skin-related cells. Sequential modulation in various gene expression profiles suggests a balanced collagen-remodeling process by dual GFs. Furthermore, in vivo histological evaluation demonstrates that our technique enhances clear epidermis formation with less scab and thicker woven structure of collagen bundle, similar to that of a normal tissue. We propose that simple administration of dual GFs with Coa has the potential to be applied as a clinical approach for fundamental scarless skin regeneration.
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Affiliation(s)
- Uiseon Park
- Division of Bioengineering, Incheon National University, Incheon, Republic of Korea
| | - Min Suk Lee
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Republic of Korea
| | - Jin Jeon
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Republic of Korea
| | - Sangmin Lee
- Department of Bioengineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Mintai P Hwang
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Yadong Wang
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Hee Seok Yang
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Republic of Korea.
| | - Kyobum Kim
- Division of Bioengineering, Incheon National University, Incheon, Republic of Korea.
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Hseu YC, Yang TY, Li ML, Rajendran P, Mathew DC, Tsai CH, Lin RW, Lee CC, Yang HL. Chalcone flavokawain A attenuates TGF-β1-induced fibrotic pathology via inhibition of ROS/Smad3 signaling pathways and induction of Nrf2/ARE-mediated antioxidant genes in vascular smooth muscle cells. J Cell Mol Med 2018; 23:775-788. [PMID: 30549180 PMCID: PMC6349172 DOI: 10.1111/jcmm.13973] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 09/28/2018] [Accepted: 09/28/2018] [Indexed: 12/21/2022] Open
Abstract
TGF‐β1 plays a crucial role in the pathogenesis of vascular fibrotic diseases. Chalcones are reportedly cancer chemo‐preventive food components that are rich in fruits and vegetables. In this study, flavokawain A (FKA, 2‐30 μM), a naturally occurring chalcone in kava extracts, was evaluated for its anti‐fibrotic and antioxidant properties in TGF‐β1‐stimulated vascular smooth muscle (A7r5) cells, as well as its underlying molecular mechanism of action. Immunofluorescence data showed down‐regulated F‐actin expression with FKA treatment in TGF‐β1‐stimulated A7r5 cells. Western blotting demonstrated that FKA treatment suppressed the expression of α‐SMA and fibronectin proteins under TGF‐β1 stimulation. Findings from wound‐healing and invasion experiments showed that FKA inhibits TGF‐β1‐mediated migration and invasion. Western blotting demonstrated that treatment with FKA down‐regulated MMP‐9 and MMP‐2 and up‐regulated TIMP‐1 expression. Further evidence showed that FKA decreased TGF‐β1‐mediated phosphorylation and the transcriptional activity of Smad3. TGF‐β1‐induced excessive ROS production was remarkably reversed by FKA treatment in A7r5 cells, and inhibition by FKA or N‐acetylcysteine (NAC) substantially diminished TGF‐β1‐induced p‐Smad3 activation and wound‐healing migration. Interestingly, FKA‐mediated antioxidant properties were associated with increased nuclear translocation of Nrf2 and elevated antioxidant response element (ARE) luciferase activity. Activation of Nrf2/ARE signaling was accompanied by the induction of HO‐1, NQO‐1 and γ‐GCLC genes in FKA‐treated A7r5 cells. Notably, silencing of Nrf2 (siRNA transfection) significantly diminished the FKA‐mediated antioxidant effects, indicating that FKA may inhibit TGF‐β1‐induced fibrosis through suppressing ROS generation in A7r5 cells. Our results suggested that anti‐fibrotic and antioxidant activities of the chalcone flavokawain A may contribute to the development of food‐based chemo‐preventive drugs for fibrotic diseases.
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Affiliation(s)
- You-Cheng Hseu
- Department of Cosmeceutics, College of Biopharmaceutical and Food Sciences, China Medical University, Taichung, Taiwan.,Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan.,Chinese Medicine Research Center, China Medical University, Taichung, Taiwan.,Research Center of Chinese Herbal Medicine, China Medical University, Taichung, Taiwan
| | - Ting-Yu Yang
- Institute of Nutrition, College of Biopharmaceutical and Food Sciences, China Medical University, Taichung, Taiwan
| | - Mei-Ling Li
- Institute of Nutrition, College of Biopharmaceutical and Food Sciences, China Medical University, Taichung, Taiwan
| | - Peramaiyan Rajendran
- Department of Cosmeceutics, College of Biopharmaceutical and Food Sciences, China Medical University, Taichung, Taiwan
| | - Dony Chacko Mathew
- Department of Cosmeceutics, College of Biopharmaceutical and Food Sciences, China Medical University, Taichung, Taiwan
| | - Chia-Hsuan Tsai
- Institute of Nutrition, College of Biopharmaceutical and Food Sciences, China Medical University, Taichung, Taiwan
| | - Ruei-Wan Lin
- Institute of Nutrition, College of Biopharmaceutical and Food Sciences, China Medical University, Taichung, Taiwan
| | - Chuan-Chen Lee
- Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
| | - Hsin-Ling Yang
- Institute of Nutrition, College of Biopharmaceutical and Food Sciences, China Medical University, Taichung, Taiwan
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14
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Wild-type p53-modulated autophagy and autophagic fibroblast apoptosis inhibit hypertrophic scar formation. J Transl Med 2018; 98:1423-1437. [PMID: 30089855 DOI: 10.1038/s41374-018-0099-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 04/12/2018] [Accepted: 05/24/2018] [Indexed: 02/06/2023] Open
Abstract
Hypertrophic scarring is a serious fibrotic skin disease, and the abnormal activation of hypertrophic scar fibroblasts (HSFs) intensifies its pathogenesis. Our previous studies have demonstrated that the dysregulation of autophagy in HSFs is associated with fibrosis. However, knowledge regarding the regulation of HS fibrosis by p53-modulated autophagy is limited. Here, we investigated the effect of p53-modulated autophagy on HS fibrosis. The overexpression of wtp53 (Adp53) promoted autophagic capacity and inhibited collagen and α-SMA expression in HSFs. In contrast, LC3 (AdLC3) overexpression did not suppress Col 1, Col 3, or α-SMA expression, but LC3 (shLC3) knockdown downregulated collagen expression. Adp53-modulated autophagy altered Bcl-2 and Bcl-xL expression, but AdLC3 affected only Bcl-xL expression. Silencing Bcl-xL suppressed collagen expression, but autophagy was also inhibited. Flow cytometry showed that the silencing of Bcl-2 (sibcl-2), Bcl-xL (sibcl-xL), and Adp53 significantly increased apoptosis in the HSFs. Therefore, wtp53 inhibited fibrosis in the HSFs by modulating autophagic HSF apoptosis; moreover, the inhibition of autophagy by sibcl-xL had antifibrotic effects. In addition, treatment with Adp53, AdLC3, shLC3, sibcl-2, and sibcl-xL reduced scar formation in a rabbit ear scar model. These data confirm that wtp53-modulated autophagy and autophagic HSF apoptosis can serve as potential molecular targets for HS therapy.
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15
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Biological characterization of human amniotic epithelial cells in a serum-free system and their safety evaluation. Acta Pharmacol Sin 2018; 39:1305-1316. [PMID: 29565036 DOI: 10.1038/aps.2018.22] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Accepted: 01/01/2018] [Indexed: 12/16/2022] Open
Abstract
Human amniotic epithelial cells (hAECs), derived from the innermost layer of the term placenta closest to the fetus, have been shown to be potential seed cells for allogeneic cell therapy. Previous studies have shown a certain therapeutic effect of hAECs. However, no appropriate isolation and culture system for hAECs has been developed for clinical applications. In the present study, we established a serum-free protocol for hAEC isolation and cultivation, in which better cell growth was observed compared with that in a traditional culture system with serum. In addition to specific expression of cell surface markers (CD29, CD166 and CD90), characterization of the biological features of hAECs revealed expression of the pluripotent markers SSEA4, OCT4 and NANOG, which was greater than that in human mesenchymal stem cells, whereas very low levels of HLA-DR and HLA-DQ were detected, suggesting the weak immunogenicity of hAECs. Intriguingly, CD90+ hAECs were identified as a unique population with a powerful immunoregulatory capacity. In a systemic safety evaluation, intravenous administration of hAEC did not result in hemolytic, allergy, toxicity issues or, more importantly, tumorigenicity. Finally, the therapeutic effect of hAECs was demonstrated in mice with radiation-induced damage. The results revealed a novel function of hAECs in systemic injury recovery. Therefore, the current study provides an applicable and safe strategy for hAEC cell therapy administration in the clinical setting.
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Autophagy protein LC3 regulates the fibrosis of hypertrophic scar by controlling Bcl-xL in dermal fibroblasts. Oncotarget 2017; 8:93757-93770. [PMID: 29212187 PMCID: PMC5706833 DOI: 10.18632/oncotarget.20771] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 07/29/2017] [Indexed: 12/19/2022] Open
Abstract
Hypertrophic scar (HS) is a serious skin fibrotic disease characterized by excessive hypercellularity and extracellular matrix (ECM) component deposition. Autophagy is a tightly regulated physiological process essential for cellular maintenance, differentiation, development and homeostasis. However, during the formation of HS, whether and how autophagy is regulated in dermal fibroblasts are still far from elucidated. Here we detected the autophagic capacity in HS and normal skin (NS) counterparts, explored and verified the key regulatory molecules of autophagy in HS-derived fibroblasts (HSFs), and validated the data using rabbit ear scar model. Transmission electron microscopy (TEM) and immunostaining data showed that LC3-positive cells and autophagosomes in HS/HSFs were more intensive relative to those in NS/NSFs groups. Knockdown of LC3 (shLC3) could significantly block the expressionof type I collagen (Col 1, p < 0.01) and type III collagen (Col 3, p < 0.01) and thus inhibit the fibrosis of HSFs. shLC3 resistant to autophagy was shown to be Bcl-xL-, not Bcl-2-dependent, and silencing of Bcl-xL (sibcl-xL) significantly increased apoptosis of HSFs (p < 0.01). Immunofluorescence results showed that instead of inhibiting α-SMA protein expression, shLC3 could change its architecture arrangement in HSFs. sibcl-xL showed that Bcl-xL was a key signaling molecule involved in HSFs autophagy. More importantly, both shLC3 and sibcl-xL obviously improved the appearance and architecture of the rabbit ear scar, and reduced scar formation on the rabbit ear. Therefore, the aberration of LC3 protein processing compromised autophagy in HS might associate with its pathogenesis in wound repair. LC3 regulated HS fibrosis by controlling the expression of Bcl-xL in HSFs. Thus, Bcl-xL might serve as a potential molecular target, providing a novel strategy for HS therapy.
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17
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Exosomes derived from human amniotic epithelial cells accelerate wound healing and inhibit scar formation. J Mol Histol 2017; 48:121-132. [PMID: 28229263 DOI: 10.1007/s10735-017-9711-x] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Accepted: 01/24/2017] [Indexed: 12/15/2022]
Abstract
Wound healing is a highly orchestrated physiological process consisting of a complex events, and scarless wound healing is highly desired for the development and application in clinical medicine. Recently, we have demonstrated that human amniotic epithelial cells (hAECs) promoted wound healing and inhibited scar formation through a paracrine mechanism. However, exosomes (Exo) are one of the most important paracrine factors. Whether exosomes derived from human amniotic epithelial cells (hAECs-Exo) have positive effects on scarless wound healing have not been reported yet. In this study, we examined the role of hAECs-Exo on wound healing in a rat model. We found that hAECs, which exhibit characteristics of both embryonic and mesenchymal stem cells, have the potential to differentiate into all three germ layers. hAECs-Exo ranged from 50 to 150 nm in diameter, and positive for exosomal markers CD9, CD63, CD81, Alix, TSG101 and HLA-G. Internalization of hAECs-Exo promoted the migration and proliferation of fibroblasts. Moreover, the deposition of extracellular matrix (ECM) were partly abolished by the treatment of high concentration of hAECs-Exo (100 μg/mL), which may be through stimulating the expression of matrix metalloproteinase-1 (MMP-1). In vivo animal experiments showed that hAECs-Exo improved the skin wound healing with well-organized collagen fibers. Taken together, These findings represent that hAECs-Exo can be used as a novel hope in cell-free therapy for scarless wound healing.
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18
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Cryptomphalus aspersa Mollusc Egg Extract Promotes Regenerative Effects in Human Dermal Papilla Stem Cells. Int J Mol Sci 2017; 18:ijms18020463. [PMID: 28230777 PMCID: PMC5343996 DOI: 10.3390/ijms18020463] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 02/13/2017] [Accepted: 02/15/2017] [Indexed: 11/28/2022] Open
Abstract
The aim of this study was to test, by an in vitro approach, whether a natural extract derived from eggs of the mollusc Cryptomphalus aspersa (e-CAF) that seems to present regenerative properties, can enhance the mobilization of human hair dermal papilla cells (HHDPCs) and play a role on tissue repair and regeneration. We have tested HHDPCs proliferation by the 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium-bromide (MTT) assay; cell migration by using a wound healing assay, as well as the modulation of the expression of cytoskeletal (F-actin and vimentin) and cell adhesion to the extracellular matrix (ECM) (vinculin and P-FAK) proteins. We also explored whether e-CAF could lead HHDPCs to keratinocytes and/or fibroblasts by evaluating the expression of specific markers. We have compared these e-CAF effects with those induced by TGFβ1, implicated in regulation of cell proliferation and migration. e-CAF promotes proliferation and migration of HHDPCs cells in a time- and dose-dependent manner; it also increases the migratory behavior and the expression of adhesion molecules. These results support the fact that e-CAF could play a role on skin regeneration and be used for the prevention or repair of damaged tissue, either due to external causes or as a result of cutaneous aging.
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