{"title":"Clinical, Radiographic, and Histologic Outcomes of Regenerative Endodontic Treatment in Human Immature Teeth Using Different Biological Scaffolds: A Systematic Review and Meta-analysis.","authors":"Mohammadreza Vatankhah, Shaghayegh Najary, Omid Dianat","doi":"10.2174/1574888X17666220903141155","DOIUrl":"10.2174/1574888X17666220903141155","url":null,"abstract":"<p><strong>Background: </strong>Biological scaffolds such as blood clot (BC), platelet-rich plasma (PRP), platelet- rich fibrin (PRF), and platelet pellet (PP) are used in regenerative endodontic treatments (RETs).</p><p><strong>Objective: </strong>To systematically and quantitatively evaluate clinical, radiographic, and histologic outcomes of RET studies using different biological scaffolds.</p><p><strong>Methods: </strong>MEDLINE, Scopus, Cochrane library, and Embase were searched to identify studies on RET procedures with any scaffold type performed on immature non-vital human teeth, employing any type of biological scaffold. Clinical, radiographic, and histologic outcomes were extracted. Cochrane collaboration risk of bias tool and Newcastle-Ottawa scale were used for quality assessment. Random and fixed model meta-analysis was carried out with 95% confidence interval.</p><p><strong>Results: </strong>Thirty-two studies were included in the qualitative analysis from the primarily retrieved 1895 studies. Only one study had high risk of bias and 71.8% of the studies had high quality. None of the studies reported any histologic findings. Thirty studies were included in meta-analysis. Clinical success rate of RET using either BC, PRP, or PRF was >99%. Furthermore, 32%, 23%, and 27% of BC, PRP, and PRF cases regained vitality, respectively. Periapical healing was seen in 67%, 75%, and 100% of BC, PRP, and PRF cases, respectively. There was no statistical difference between BC, PRP, or PRF regarding clinical success or any radiographic outcomes.</p><p><strong>Conclusion: </strong>There was no significant difference between BC, PRP, and PRF in terms of clinical and radiographic outcomes. When it is difficult or dangerous to induce bleeding in root canals, PRP and PRF may be employed instead.</p>","PeriodicalId":10979,"journal":{"name":"Current stem cell research & therapy","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40345796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cancer Stem Cells in Carcinogenesis and Potential Role in Pancreatic Cancer.","authors":"Rishav Sharma, Rishabha Malviya","doi":"10.2174/1574888X19666230914103420","DOIUrl":"10.2174/1574888X19666230914103420","url":null,"abstract":"<p><p>A poor prognosis is associated with pancreatic cancer because of resistance during treatment and early distant metastases. The discovery of cancer stem cells has opened up novel avenues for research into the biology and treatment of cancer. Many investigations have pointed out the role of these types of stem cells in the oncogenesis and progression of hematologic and solid malignancies, specifically. Due to the existence of cancer stem cells in the proliferation and preservation of pancreatic tumors, such malignancies could be difficult to eradicate using conventional treatment techniques like chemotherapy and radiotherapy. It is hypothesized that pancreatic malignancies originate from a limited population of aberrant cancer stem cells to promote carcinogenesis, tumour metastasis, and therapeutic resistance. This review examines the role of pancreatic cancer stem cells in this disease and their significance in carcinogenesis, as well as the signals which modulate them, and also examines the ongoing clinical studies that are now being conducted with pancreatic stem cells.</p>","PeriodicalId":10979,"journal":{"name":"Current stem cell research & therapy","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10247097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Faeze Shahedi, Arron Munggela Foma, Azam Mahmoudi-Aznaveh, Mohammad Ali Mazlomi, Zahra Azizi, Mohammad Reza Khorramizadeh
{"title":"Differentiation of Pancreatic Beta Cells: Dual Acting of Inflammatory Factors.","authors":"Faeze Shahedi, Arron Munggela Foma, Azam Mahmoudi-Aznaveh, Mohammad Ali Mazlomi, Zahra Azizi, Mohammad Reza Khorramizadeh","doi":"10.2174/1574888X18666230504093649","DOIUrl":"10.2174/1574888X18666230504093649","url":null,"abstract":"<p><p>In the past decades, scientists have made outstanding efforts to treat diabetes. However, diabetes treatment is still far from satisfactory due to the complex nature of the disease and the challenges encountered in resolving it. Inflammatory factors are key regulators of the immune system's response to pathological insults, organ neogenesis, rejuvenation of novel cells to replace injured cells and overwhelming disease conditions. Currently, the available treatments for type 1 diabetes include daily insulin injection, pancreatic beta cell or tissue transplantation, and gene therapy. Cell therapy, exploiting differentiation, and reprogramming various types of cells to generate pancreatic insulin-producing cells are novel approaches for the treatment of type 1 diabetes. A better understanding of the inflammatory pathways offers valuable and improved therapeutic options to provide more advanced and better treatments for diabetes. In this review, we investigated different types of inflammatory factors that participate in the pathogenesis of type 1 diabetes, their possible dual impacts on the differentiation, reprogramming, and fusion of other stem cell lines into pancreatic insulin-producing beta cells, and the possibility of applying these factors to improve the treatment of this disease.</p>","PeriodicalId":10979,"journal":{"name":"Current stem cell research & therapy","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9418175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Parham Hazrati, Mohammad Hassan Mirtaleb, Helia Sadat Haeri Boroojeni, Amir Ali Yousefi Koma, Hanieh Nokhbatolfoghahaei
{"title":"Current Trends, Advances, and Challenges of Tissue Engineering-Based Approaches of Tooth Regeneration: A Review of the Literature.","authors":"Parham Hazrati, Mohammad Hassan Mirtaleb, Helia Sadat Haeri Boroojeni, Amir Ali Yousefi Koma, Hanieh Nokhbatolfoghahaei","doi":"10.2174/1574888X17666220818103228","DOIUrl":"10.2174/1574888X17666220818103228","url":null,"abstract":"<p><strong>Introduction: </strong>Tooth loss is a significant health issue. Currently, this situation is often treated with the use of synthetic materials such as implants and prostheses. However, these treatment modalities do not fully meet patients' biological and mechanical needs and have limited longevity. Regenerative medicine focuses on the restoration of patients' natural tissues via tissue engineering techniques instead of rehabilitating with artificial appliances. Therefore, a tissue-engineered tooth regeneration strategy seems like a promising option to treat tooth loss.</p><p><strong>Objective: </strong>This review aims to demonstrate recent advances in tooth regeneration strategies and discoveries about underlying mechanisms and pathways of tooth formation.</p><p><strong>Results and discussion: </strong>Whole tooth regeneration, tooth root formation, and dentin-pulp organoid generation have been achieved by using different seed cells and various materials for scaffold production. Bioactive agents are critical elements for the induction of cells into odontoblast or ameloblast lineage. Some substantial pathways enrolled in tooth development have been figured out, helping researchers design their experiments more effectively and aligned with the natural process of tooth formation.</p><p><strong>Conclusion: </strong>According to current knowledge, tooth regeneration is possible in case of proper selection of stem cells, appropriate design and manufacturing of a biocompatible scaffold, and meticulous application of bioactive agents for odontogenic induction. Understanding innate odontogenesis pathways play a crucial role in accurately planning regenerative therapeutic interventions in order to reproduce teeth.</p>","PeriodicalId":10979,"journal":{"name":"Current stem cell research & therapy","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40639123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xuan Zhang, Wentao Shi, Xun Wang, Yin Zou, Wen Xiang, Naiyan Lu
{"title":"Evaluation of the Composite Skin Patch Loaded with Bioactive Functional Factors Derived from Multicellular Spheres of EMSCs for Regeneration of Full-thickness Skin Defects in Rats.","authors":"Xuan Zhang, Wentao Shi, Xun Wang, Yin Zou, Wen Xiang, Naiyan Lu","doi":"10.2174/1574888X19666230908142426","DOIUrl":"10.2174/1574888X19666230908142426","url":null,"abstract":"<p><strong>Background: </strong>Transplantation of stem cells/scaffold is an efficient approach for treating tissue injury including full-thickness skin defects. However, the application of stem cells is limited by preservation issues, ethical restriction, low viability, and immune rejection <i>in vivo</i>. The mesenchymal stem cell conditioned medium is abundant in bioactive functional factors, making it a viable alternative to living cells in regeneration medicine.</p><p><strong>Methods: </strong>Nasal mucosa-derived ecto-mesenchymal stem cells (EMSCs) of rats were identified and grown in suspension sphere-forming 3D culture. The EMSCs-conditioned medium (EMSCs-CM) was collected, lyophilized, and analyzed for its bioactive components. Next, fibrinogen and chitosan were further mixed and cross-linked with the lyophilized powder to obtain functional skin patches. Their capacity to gradually release bioactive substances and biocompatibility with epidermal cells were assessed <i>in vitro</i>. Finally, a full-thickness skin defect model was established to evaluate the therapeutic efficacy of the skin patch.</p><p><strong>Results: </strong>The EMSCs-CM contains abundant bioactive proteins including VEGF, KGF, EGF, bFGF, SHH, IL-10, and fibronectin. The bioactive functional composite skin patch containing EMSCs-CM lyophilized powder showed the network-like microstructure could continuously release the bioactive proteins, and possessed ideal biocompatibility with rat epidermal cells <i>in vitro</i>. Transplantation of the composite skin patch could expedite the healing of the full-thickness skin defect by promoting endogenous epidermal stem cell proliferation and skin appendage regeneration in rats.</p><p><strong>Conclusion: </strong>In summary, the bioactive functional composite skin patch containing EMSCs-CM lyophilized powder can effectively accelerate skin repair, which has promising application prospects in the treatment of skin defects.</p>","PeriodicalId":10979,"journal":{"name":"Current stem cell research & therapy","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10554810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dongdong Ti, Jun Yi, Huihua Chen, Haojie Hao, Chunmeng Shi
{"title":"The Role of Mesenchymal Stem/Stromal Cells Secretome in Macrophage Polarization: Perspectives on Treating Inflammatory Diseases.","authors":"Dongdong Ti, Jun Yi, Huihua Chen, Haojie Hao, Chunmeng Shi","doi":"10.2174/1574888X18666230811093101","DOIUrl":"10.2174/1574888X18666230811093101","url":null,"abstract":"<p><p>Mesenchymal stem/stromal cells (MSCs) have exhibited potential for treating multiple inflammation- related diseases (IRDs) due to their easy acquisition, unique immunomodulatory and tissue repair properties, and immune-privileged characteristics. It is worth mentioning that MSCs release a wide array of soluble bioactive components in the secretome that modulate host innate and adaptive immune responses and promote the resolution of inflammation. As the first line of defense, macrophages exist throughout the entire inflammation process. They continuously switch their molecular phenotypes accompanied by complementary functional regulation ranging from classically activated pro-inflammatory M1-type (M1) to alternatively activated anti-inflammatory M2-type macrophages (M2). Recent studies have shown that the active intercommunication between MSCs and macrophages is indispensable for the immunomodulatory and regenerative behavior of MSCs in pharmacological cell therapy products. In this review, we systematically summarized the emerging capacities and detailed the molecular mechanisms of the MSC-derived secretome (MSC-SE) in immunomodulating macrophage polarization and preventing excessive inflammation, providing novel insights into the clinical applications of MSC-based therapy in IRD management.</p>","PeriodicalId":10979,"journal":{"name":"Current stem cell research & therapy","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10313062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mesenchymal Stem Cell-Derived Exosomes Mitigate Acute Murine Liver Injury via Ets-1 and Heme Oxygenase-1 Up-regulation.","authors":"Ying-Hsien Kao, Chih-Yang Chang, Yu-Chun Lin, Po-Han Chen, Po-Huang Lee, Huoy-Rou Chang, Wen-Yu Chang, Yo-Chen Chang, Shen-Fa Wun, Cheuk-Kwan Sun","doi":"10.2174/1574888X19666230918102826","DOIUrl":"10.2174/1574888X19666230918102826","url":null,"abstract":"<p><strong>Background: </strong>Mesenchymal stem cells (MSCs)-derived exosomes have been previously demonstrated to promote tissue regeneration in various animal disease models. This study investigated the protective effect of exosome treatment in carbon tetrachloride (CCl4)-induced acute liver injury and delineated possible underlying mechanism.</p><p><strong>Methods: </strong>Exosomes collected from conditioned media of previously characterized human umbilical cord-derived MSCs were intravenously administered into male CD-1 mice with CCl<sub>4</sub>-induced acute liver injury. Biochemical, histological and molecular parameters were used to evaluate the severity of liver injury. A rat hepatocyte cell line, Clone-9, was used to validate the molecular changes by exosome treatment.</p><p><strong>Results: </strong>Exosome treatment significantly suppressed plasma levels of AST, ALT, and pro-inflammatory cytokines, including IL-6 and TNF-α, in the mice with CCl<sub>4</sub>-induced acute liver injury. Histological morphometry revealed a significant reduction in the necropoptic area in the injured livers following exosome therapy. Consistently, western blot analysis indicated marked elevations in hepatic expression of PCNA, c-Met, Ets-1, and HO-1 proteins after exosome treatment. Besides, the phosphorylation level of signaling mediator JNK was significantly increased, and that of p38 was restored by exosome therapy. Immunohistochemistry double staining confirmed nuclear Ets-1 expression and cytoplasmic localization of c-Met and HO-1 proteins. <i>In vitro</i> studies demonstrated that exosome treatment increased the proliferation of Clone-9 hepatocytes and protected them from CCl4-induced cytotoxicity. Kinase inhibition experiment indicated that the exosome-driven hepatoprotection might be mediated through the JNK pathway.</p><p><strong>Conclusion: </strong>Exosome therapy activates the JNK signaling activation pathway as well as up-regulates Ets-1 and HO-1 expression, thereby protecting hepatocytes against hepatotoxin-induced cell death.</p>","PeriodicalId":10979,"journal":{"name":"Current stem cell research & therapy","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10314119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Compression Promotes the Osteogenic Differentiation of Human Periodontal Ligament Stem Cells by Regulating METTL14-mediated IGF1","authors":"Zengbo Wu","doi":"10.2174/011574888x244047231012103752","DOIUrl":"https://doi.org/10.2174/011574888x244047231012103752","url":null,"abstract":"Background and Objectives:: Orthodontic treatment involves the application of mechanical force to induce periodontal tissue remodeling and ultimately promote tooth movement. It is essential to study the response mechanisms of human periodontal ligament stem cells (hPDLSCs) to improve orthodontic treatment. Methods:: In this study, hPDLSCs treated with compressive force were used to simulate orthodontic treatment. Cell viability and cell death were assessed using the CCK-8 assay and TUNEL staining. Alkaline phosphatase (ALP) and alizarin red staining were performed to evaluate osteogenic differentiation. The binding relationship between IGF1 and METTL14 was assessed using RIP and dual-luciferase reporter assays. Results:: The compressive force treatment promoted the viability and osteogenic differentiation of hPDLSCs. Additionally, m6A and METTL14 levels in hPDLSCs increased after compressive force treatment, whereas METTL14 knockdown decreased cell viability and inhibited the osteogenic differentiation of hPDLSCs treated with compressive force. Furthermore, the upregulation of METTL14 increased m6A levels, mRNA stability, and IGF1 expression. RIP and dual-luciferase reporter assays confirmed the interaction between METTL14 and IGF1. Furthermore, rescue experiments demonstrated that IGF1 overexpression reversed the effects of METTL14 knockdown in hPDLSCs treated with compressive force. Conclusions:: In conclusion, this study demonstrated that compressive force promotes cell viability and osteogenic differentiation of hPDLSCs by regulating IGF1 levels mediated by METTL14.","PeriodicalId":10979,"journal":{"name":"Current stem cell research & therapy","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138540719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Priscila Elias Ferreira Stricker, Nathalia Barth de Oliveira, Bassam Felipe Mogharbel, Larissa Lührs, Ana Carolina Irioda, Eltyeb Abdelwahid, Luciane Regina Cavalli, Idiberto José Zotarelli Filho, Katherine Athayde Teixeira de Carvalho
{"title":"Meta-analysis of the Mesenchymal Stem Cells Immortalization Protocols: A Guideline for Regenerative Medicine","authors":"Priscila Elias Ferreira Stricker, Nathalia Barth de Oliveira, Bassam Felipe Mogharbel, Larissa Lührs, Ana Carolina Irioda, Eltyeb Abdelwahid, Luciane Regina Cavalli, Idiberto José Zotarelli Filho, Katherine Athayde Teixeira de Carvalho","doi":"10.2174/011574888x268464231016070900","DOIUrl":"https://doi.org/10.2174/011574888x268464231016070900","url":null,"abstract":"Background:: This systematic review describes the most common methodologies for immortalizing human and animal mesenchymal stem cells (MSCs). This study follows the rules of PRISMA and is registered in the Institutional Review Board of PROSPERO International of systematic reviews, numbered protocol code: CRD42020202465. Method:: The data search systematization was based on the words “mesenchymal stem cell” AND “immortalization.” The search period for publications was between 2000 and 2022, and the databases used were SCOPUS, PUBMED, and SCIENCE DIRECT. The search strategies identified 384 articles: 229 in the SCOPUS database, 84 in PUBMED, and 71 in SCIENCE DIRECT. After screening by titles and abstracts, 285 articles remained. This review included thirty-nine articles according to the inclusion and exclusion criteria. Result:: In 28 articles, MSCs were immortalized from humans and 11 animals. The most used immortalization methodology was viral transfection. The most common immortalized cell type was the MSC from bone marrow, and the most used gene for immortalizing human and animal MSCs was hTERT (39.3%) and SV40T (54.5%), respectively. Conclusion:: Also, it was observed that although less than half of the studies performed tumorigenicity assays to validate the immortalized MSCs, other assays, such as qRT-PCR, colony formation in soft agar, karyotype, FISH, and cell proliferation, were performed in most studies on distinct MSC cell passages.","PeriodicalId":10979,"journal":{"name":"Current stem cell research & therapy","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138540718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xinghong Zhou, Ya Liu, Jiahui Xie, Ziqi Wen, Jiaqi Yang, Hanyue Zhang, Zijing Zhou, Jinyu Zhang, Huixian Cui, Jun Ma
{"title":"MSC-Derived Extracellular Vesicles Against Pulmonary Fibrosis of Rodent Model: A Meta-Analysis.","authors":"Xinghong Zhou, Ya Liu, Jiahui Xie, Ziqi Wen, Jiaqi Yang, Hanyue Zhang, Zijing Zhou, Jinyu Zhang, Huixian Cui, Jun Ma","doi":"10.2174/1574888X18666230817111559","DOIUrl":"https://doi.org/10.2174/1574888X18666230817111559","url":null,"abstract":"<p><strong>Background: </strong>Pulmonary fibrosis (PF) is a fatal disease distinguished by structural destruction and dysfunction, accompanied by continuous accumulation of fibroblasts, which eventually leads to lung failure. Preclinical studies have shown that the administration of mesenchymal stem cell-derived extracellular vesicles (MSC-EVs) may be a safe and effective treatment for PF. The purpose of our meta-analysis is to evaluate the efficacy of MSC-EVs therapy and identify therapeutic aspects related to PF.</p><p><strong>Methods: </strong>Our study (up to April 6, 2022) identified English and Chinese, preclinical, controlled, and in vivo studies to examine the application of MSC-EVs in the treatment of PF. The risk of bias (ROB) is assessed using the SYRCLE bias risk tool. The primary outcomes include collagen content, α-smooth muscle actin (α-SMA), hydroxyproline (HYP) content, and transforming growth factor-β1 (TGF-β1).</p><p><strong>Results: </strong>Thirteen studies were included in this meta-analysis. Ten studies evaluated the collagen content, five studies evaluated the α-SMA, five studies evaluated the HYP content, and six studies evaluated the TGF-β1. Compared to the control group, MSC-EVs therapy was associated with a significant reduction of collagen accumulation, α-SMA, HYP content, and TGF-β1.</p><p><strong>Conclusion: </strong>The administration of MSC-EVs is beneficial for the treatment of rodent PF models. However, the safety and effectiveness of the application in human PF diseases have yet to be confirmed. The application of MSC-EVs in the treatment of PF needs to be further standardized in terms of source, route of administration, and culture method.</p>","PeriodicalId":10979,"journal":{"name":"Current stem cell research & therapy","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10078111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}