{"title":"Potential plausible role of Wharton's jelly mesenchymal stem cells for diabetic bone regeneration.","authors":"Sheng Zheng, Guan-Yu Hu, Jun-Hua Li, Yi-Kai Li","doi":"10.4252/wjsc.v16.i8.824","DOIUrl":"10.4252/wjsc.v16.i8.824","url":null,"abstract":"<p><p>This letter addresses the review titled \"Wharton's jelly mesenchymal stem cells: Future regenerative medicine for clinical applications in mitigation of radiation injury\". The review highlights the regenerative potential of Wharton's jelly mesenchymal stem cells (WJ-MSCs) and describes why WJ-MSCs will become one of the most probable stem cells for future regenerative medicine. The potential plausible role of WJ-MSCs for diabetic bone regeneration should be noticeable, which will provide a new strategy for improving bone regeneration under diabetic conditions.</p>","PeriodicalId":23775,"journal":{"name":"World journal of stem cells","volume":"16 8","pages":"824-826"},"PeriodicalIF":3.6,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11362853/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142112701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Naveen Jeyaraman, Sandeep Shrivastava, V R Ravi, Arulkumar Nallakumarasamy, Aditya Pundkar, Madhan Jeyaraman
{"title":"Understanding and controlling the variables for stromal vascular fraction therapy.","authors":"Naveen Jeyaraman, Sandeep Shrivastava, V R Ravi, Arulkumar Nallakumarasamy, Aditya Pundkar, Madhan Jeyaraman","doi":"10.4252/wjsc.v16.i8.784","DOIUrl":"10.4252/wjsc.v16.i8.784","url":null,"abstract":"<p><p>In regenerative medicine, the isolation of mesenchymal stromal cells (MSCs) from the adipose tissue's stromal vascular fraction (SVF) is a critical area of study. Our review meticulously examines the isolation process of MSCs, starting with the extraction of adipose tissue. The choice of liposuction technique, anatomical site, and immediate processing are essential to maintain cell functionality. We delve into the intricacies of enzymatic digestion, emphasizing the fine-tuning of enzyme concentrations to maximize cell yield while preventing harm. The review then outlines the filtration and centrifugation techniques necessary for isolating a purified SVF, alongside cell viability assessments like flow cytometry, which are vital for confirming the efficacy of the isolated MSCs. We discuss the advantages and drawbacks of using autologous <i>vs</i> allogeneic SVF sources, touching upon immunocompatibility and logistical considerations, as well as the variability inherent in donor-derived cells. Anesthesia choices, the selection between hypodermic needles <i>vs</i> liposuction cannulas, and the role of adipose tissue lysers in achieving cellular dissociation are evaluated for their impact on SVF isolation. Centrifugation protocols are also analyzed for their part in ensuring the integrity of the SVF. The necessity for standardized MSC isolation protocols is highlighted, promoting reproducibility and successful clinical application. We encourage ongoing research to deepen the understanding of MSC biology and therapeutic action, aiming to further the field of regenerative medicine. The review concludes with a call for rigorous research, interdisciplinary collaboration, and strict adherence to ethical and regulatory standards to safeguard patient safety and optimize treatment outcomes with MSCs.</p>","PeriodicalId":23775,"journal":{"name":"World journal of stem cells","volume":"16 8","pages":"784-798"},"PeriodicalIF":3.6,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11362852/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142112703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mesenchymal stem cells: A promising therapeutic avenue for non-alcoholic fatty liver disease.","authors":"Chun-Han Cheng, Wen-Rui Hao, Tzu-Hurng Cheng","doi":"10.4252/wjsc.v16.i8.780","DOIUrl":"10.4252/wjsc.v16.i8.780","url":null,"abstract":"<p><p>Non-alcoholic fatty liver disease (NAFLD) is a pressing global health concern that is associated with metabolic syndrome and obesity. On the basis of the insights provided by Jiang <i>et al</i>, this editorial presents an exploration of the potential of mesenchymal stem cells (MSCs) for NAFLD treatment. MSCs have numerous desirable characteristics, including immunomodulation, anti-inflammatory properties, and tissue regeneration promotion, rendering them attractive candidates for NAFLD treatment. Recent preclinical and early clinical studies have highlighted the efficacy of MSCs in improving liver function and reducing disease severity in NAFLD models. However, MSC heterogeneity, long-term safety concerns, and unoptimized therapeutic protocols remain substantial challenges. Addressing these challenges through standardized protocols and rigorous clinical trials is essential to the safe and successful application of MSCs in NAFLD management. Continued research into MSC mechanisms and therapeutic optimization is required to improve treatments for NAFLD and related liver diseases.</p>","PeriodicalId":23775,"journal":{"name":"World journal of stem cells","volume":"16 8","pages":"780-783"},"PeriodicalIF":3.6,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11362857/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142117116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiong-Fei Zou, Bao-Zhong Zhang, Wen-Wei Qian, Florence Mei Cheng
{"title":"Bone marrow mesenchymal stem cells in treatment of peripheral nerve injury.","authors":"Xiong-Fei Zou, Bao-Zhong Zhang, Wen-Wei Qian, Florence Mei Cheng","doi":"10.4252/wjsc.v16.i8.799","DOIUrl":"10.4252/wjsc.v16.i8.799","url":null,"abstract":"<p><p>Peripheral nerve injury (PNI) is a common neurological disorder and complete functional recovery is difficult to achieve. In recent years, bone marrow mesenchymal stem cells (BMSCs) have emerged as ideal seed cells for PNI treatment due to their strong differentiation potential and autologous transplantation ability. This review aims to summarize the molecular mechanisms by which BMSCs mediate nerve repair in PNI. The key mechanisms discussed include the differentiation of BMSCs into multiple types of nerve cells to promote repair of nerve injury. BMSCs also create a microenvironment suitable for neuronal survival and regeneration through the secretion of neurotrophic factors, extracellular matrix molecules, and adhesion molecules. Additionally, BMSCs release pro-angiogenic factors to promote the formation of new blood vessels. They modulate cytokine expression and regulate macrophage polarization, leading to immunomodulation. Furthermore, BMSCs synthesize and release proteins related to myelin sheath formation and axonal regeneration, thereby promoting neuronal repair and regeneration. Moreover, this review explores methods of applying BMSCs in PNI treatment, including direct cell transplantation into the injured neural tissue, implantation of BMSCs into nerve conduits providing support, and the application of genetically modified BMSCs, among others. These findings confirm the potential of BMSCs in treating PNI. However, with the development of this field, it is crucial to address issues related to BMSC therapy, including establishing standards for extracting, identifying, and cultivating BMSCs, as well as selecting application methods for BMSCs in PNI such as direct transplantation, tissue engineering, and genetic engineering. Addressing these issues will help translate current preclinical research results into clinical practice, providing new and effective treatment strategies for patients with PNI.</p>","PeriodicalId":23775,"journal":{"name":"World journal of stem cells","volume":"16 8","pages":"799-810"},"PeriodicalIF":3.6,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11362854/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142112699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lin He, Chen Zhu, Xiang-Feng Zhou, Shu-E Zeng, Le Zhang, Kuan Li
{"title":"Gut microbiota modulating intestinal stem cell differentiation.","authors":"Lin He, Chen Zhu, Xiang-Feng Zhou, Shu-E Zeng, Le Zhang, Kuan Li","doi":"10.4252/wjsc.v16.i6.619","DOIUrl":"10.4252/wjsc.v16.i6.619","url":null,"abstract":"<p><p>Proliferation and differentiation of intestinal stem cell (ISC) to replace damaged gut mucosal epithelial cells in inflammatory states is a critical step in ameliorating gut inflammation. However, when this disordered proliferation continues, it induces the ISC to enter a cancerous state. The gut microbiota on the free surface of the gut mucosal barrier is able to interact with ISC on a sustained basis. Microbiota metabolites are able to regulate the proliferation of gut stem and progenitor cells through transcription factors, while in steady state, differentiated colonocytes are able to break down such metabolites, thereby protecting stem cells at the gut crypt. In the future, the gut flora and its metabolites mediating the regulation of ISC differentiation will be a potential treatment for enteropathies.</p>","PeriodicalId":23775,"journal":{"name":"World journal of stem cells","volume":"16 6","pages":"619-622"},"PeriodicalIF":3.6,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11212547/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141474722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Serdar Kabatas, Erdinç Civelek, Osman Boyalı, Gülseli Berivan Sezen, Omer Ozdemir, Yeliz Bahar-Ozdemir, Necati Kaplan, Eyüp Can Savrunlu, Erdal Karaöz
{"title":"Safety and efficiency of Wharton's Jelly-derived mesenchymal stem cell administration in patients with traumatic brain injury: First results of a phase I study.","authors":"Serdar Kabatas, Erdinç Civelek, Osman Boyalı, Gülseli Berivan Sezen, Omer Ozdemir, Yeliz Bahar-Ozdemir, Necati Kaplan, Eyüp Can Savrunlu, Erdal Karaöz","doi":"10.4252/wjsc.v16.i6.641","DOIUrl":"10.4252/wjsc.v16.i6.641","url":null,"abstract":"<p><strong>Background: </strong>Traumatic brain injury (TBI) is characterized by a disruption in the normal function of the brain due to an injury following a trauma, which can potentially cause severe physical, cognitive, and emotional impairment. Stem cell transplantation has evolved as a novel treatment modality in the management of TBI, as it has the potential to arrest the degeneration and promote regeneration of new cells in the brain. Wharton's Jelly-derived mesenchymal stem cells (WJ-MSCs) have recently shown beneficial effects in the functional recovery of neurological deficits.</p><p><strong>Aim: </strong>To evaluate the safety and efficiency of MSC therapy in TBI.</p><p><strong>Methods: </strong>We present 6 patients, 4 male and 2 female aged between 21 and 27 years who suffered a TBI. These 6 patients underwent 6 doses of intrathecal, intramuscular (i.m.) and intravenous transplantation of WJ-MSCs at a target dose of 1 × 10<sup>6</sup>/kg for each application route. Spasticity was assessed using the Modified Ashworth scale (MAS), motor function according to the Medical Research Council Muscle Strength Scale, quality of life was assessed by the Functional Independence Measure (FIM) scale and Karnofsky Performance Status scale.</p><p><strong>Results: </strong>Our patients showed only early, transient complications, such as subfebrile fever, mild headache, and muscle pain due to i.m. injection, which resolved within 24 h. During the one year follow-up, no other safety issues or adverse events were reported. These 6 patients showed improvements in their cognitive abilities, muscle spasticity, muscle strength, performance scores and fine motor skills when compared before and after the intervention. MAS values, which we used to assess spasticity, were observed to statistically significantly decrease for both left and right sides (<i>P</i> < 0.001). The FIM scale includes both motor scores (<i>P</i> < 0.05) and cognitive scores (<i>P</i> < 0.001) and showed a significant increase in pretest posttest analyses. The difference observed in the participants' Karnofsky Performance Scale values pre and post the intervention was statistically significant (<i>P</i> < 0.001).</p><p><strong>Conclusion: </strong>This study showed that cell transplantation has a safe, effective and promising future in the management of TBI.</p>","PeriodicalId":23775,"journal":{"name":"World journal of stem cells","volume":"16 6","pages":"641-655"},"PeriodicalIF":3.6,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11212551/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Exosomes from umbilical cord mesenchymal stromal cells promote the collagen production of fibroblasts from pelvic organ prolapse.","authors":"Lei-Mei Xu, Xin-Xin Yu, Ning Zhang, Yi-Song Chen","doi":"10.4252/wjsc.v16.i6.708","DOIUrl":"10.4252/wjsc.v16.i6.708","url":null,"abstract":"<p><strong>Background: </strong>Pelvic organ prolapse (POP) involves pelvic organ herniation into the vagina due to pelvic floor tissue laxity, and vaginal structure is an essential factor. In POP, the vaginal walls exhibit abnormal collagen distribution and decreased fibroblast levels and functions. The intricate etiology of POP and the prohibition of transvaginal meshes in pelvic reconstruction surgery present challenges in targeted therapy development. Human umbilical cord mesenchymal stromal cells (hucMSCs) present limitations, but their exosomes (hucMSC-Exo) are promising therapeutic tools for promoting fibroblast proliferation and extracellular matrix remodeling.</p><p><strong>Aim: </strong>To investigate the effects of hucMSC-Exo on the functions of primary vaginal fibroblasts and to elucidate the underlying mechanism involved.</p><p><strong>Methods: </strong>Human vaginal wall collagen content was assessed by Masson's trichrome and Sirius blue staining. Gene expression differences in fibroblasts from patients with and without POP were assessed <i>via</i> RNA sequencing (RNA-seq). The effects of hucMSC-Exo on fibroblasts were determined <i>via</i> functional experiments <i>in vitro</i>. RNA-seq data from fibroblasts exposed to hucMSC-Exo and microRNA (miRNA) sequencing data from hucMSC-Exo were jointly analyzed to identify effective molecules.</p><p><strong>Results: </strong>In POP, the vaginal wall exhibited abnormal collagen distribution and reduced fibroblast 1 quality and quantity. Treatment with 4 or 6 μg/mL hucMSC-Exo suppressed inflammation in POP group fibroblasts, stimulated primary fibroblast growth, and elevated collagen I (Col1) production <i>in vitro</i>. High-throughput RNA-seq of fibroblasts treated with hucMSC-Exo and miRNA sequencing of hucMSC-Exo revealed that abundant exosomal miRNAs downregulated matrix metalloproteinase 11 (MMP11) expression.</p><p><strong>Conclusion: </strong>HucMSC-Exo normalized the growth and function of primary fibroblasts from patients with POP by promoting cell growth and Col1 expression <i>in vitro</i>. Abundant miRNAs in hucMSC-Exo targeted and downregulated MMP11 expression. HucMSC-Exo-based therapy may be ideal for safely and effectively treating POP.</p>","PeriodicalId":23775,"journal":{"name":"World journal of stem cells","volume":"16 6","pages":"708-727"},"PeriodicalIF":3.6,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11212552/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Searching for the optimal precondition procedure for mesenchymal stem/stromal cell treatment: Facts and perspectives.","authors":"Yu-Dong Zhao, Yong-Can Huang, Wei-Shi Li","doi":"10.4252/wjsc.v16.i6.615","DOIUrl":"10.4252/wjsc.v16.i6.615","url":null,"abstract":"<p><p>Mesenchymal stem/stromal cells are potential optimal cell sources for stem cell therapies, and pretreatment has proven to enhance cell vitality and function. In a recent publication, Li <i>et al</i> explored a new combination of pretreatment conditions. Here, we present an editorial to comment on their work and provide our view on mesenchymal stem/stromal cell precondition.</p>","PeriodicalId":23775,"journal":{"name":"World journal of stem cells","volume":"16 6","pages":"615-618"},"PeriodicalIF":3.6,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11212554/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Umbilical cord mesenchymal stem cell exosomes alleviate necrotizing enterocolitis in neonatal mice by regulating intestinal epithelial cells autophagy.","authors":"Lin Zhu, Lu He, Wu Duan, Bo Yang, Ning Li","doi":"10.4252/wjsc.v16.i6.728","DOIUrl":"10.4252/wjsc.v16.i6.728","url":null,"abstract":"<p><strong>Background: </strong>Necrotizing enterocolitis (NEC) is a severe gastrointestinal disease that affects premature infants. Although mounting evidence supports the therapeutic effect of exosomes on NEC, the underlying mechanisms remain unclear.</p><p><strong>Aim: </strong>To investigate the mechanisms underlying the regulation of inflammatory response and intestinal barrier function by umbilical cord mesenchymal stem cell (UCMSCs) exosomes, as well as their potential in alleviating NEC in neonatal mice.</p><p><strong>Methods: </strong>NEC was induced in 5-d-old C57BL/6 pups through hypoxia and gavage feeding of formula containing lipopolysaccharide (LPS), after which the mice received human UCMSC exosomes (hUCMSC-exos). The control mice were allowed to breastfeed with their dams. Ileal tissues were collected from the mice and analyzed by histopathology and immunoblotting. Colon tissues were collected from NEC neonates and analyzed by immunofluorescence. Molecular biology and cell culture approaches were employed to study the related mechanisms in intestinal epithelial cells.</p><p><strong>Results: </strong>We found that autophagy is overactivated in intestinal epithelial cells during NEC, resulting in reduced expression of tight junction proteins and an increased inflammatory response. The ability of hUCMSC-exos to ameliorate NEC in a mouse model was dependent on decreased intestinal autophagy. We also showed that hUCMSC-exos alleviate the inflammatory response and increase migration ability in intestinal epithelial cells induced by LPS.</p><p><strong>Conclusion: </strong>These results contribute to a better understanding of the protective mechanisms of hUCMSC-exos against NEC and provide a new theoretical and experimental foundation for NEC treatment. These findings also enhance our understanding of the role of the autophagy mechanism in NEC, offering potential avenues for identifying new therapeutic targets.</p>","PeriodicalId":23775,"journal":{"name":"World journal of stem cells","volume":"16 6","pages":"728-738"},"PeriodicalIF":3.6,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11212546/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ying Gao, Mei-Fang Liu, Yang Li, Xi Liu, Yu-Jie Cao, Qian-Fa Long, Jun Yu, Jian-Ying Li
{"title":"Mesenchymal stem cells-extracellular vesicles alleviate pulmonary fibrosis by regulating immunomodulators.","authors":"Ying Gao, Mei-Fang Liu, Yang Li, Xi Liu, Yu-Jie Cao, Qian-Fa Long, Jun Yu, Jian-Ying Li","doi":"10.4252/wjsc.v16.i6.670","DOIUrl":"10.4252/wjsc.v16.i6.670","url":null,"abstract":"<p><strong>Background: </strong>Pulmonary fibrosis (PF) is a chronic interstitial lung disease characterized by fibroblast proliferation and extracellular matrix formation, causing structural damage and lung failure. Stem cell therapy and mesenchymal stem cells-extracellular vesicles (MSC-EVs) offer new hope for PF treatment.</p><p><strong>Aim: </strong>To investigate the therapeutic potential of MSC-EVs in alleviating fibrosis, oxidative stress, and immune inflammation in A549 cells and bleomycin (BLM)-induced mouse model.</p><p><strong>Methods: </strong>The effect of MSC-EVs on A549 cells was assessed by fibrosis markers [collagen I and α-smooth muscle actin (α-SMA), oxidative stress regulators [nuclear factor E2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1), and inflammatory regulators [nuclear factor-kappaB (NF-κB) p65, interleukin (IL)-1β, and IL-2]. Similarly, they were assessed in the lungs of mice where PF was induced by BLM after MSC-EV transfection. MSC-EVs ion PF mice were detected by pathological staining and western blot. Single-cell RNA sequencing was performed to investigate the effects of the MSC-EVs on gene expression profiles of macrophages after modeling in mice.</p><p><strong>Results: </strong>Transforming growth factor (TGF)-β1 enhanced fibrosis in A549 cells, significantly increasing collagen I and α-SMA levels. Notably, treatment with MSC-EVs demonstrated a remarkable alleviation of these effects. Similarly, the expression of oxidative stress regulators, such as Nrf2 and HO-1, along with inflammatory regulators, including NF-κB p65 and IL-1β, were mitigated by MSC-EV treatment. Furthermore, in a parallel manner, MSC-EVs exhibited a downregulatory impact on collagen deposition, oxidative stress injuries, and inflammatory-related cytokines in the lungs of mice with PF. Additionally, the mRNA sequencing results suggested that BLM may induce PF in mice by upregulating pulmonary collagen fiber deposition and triggering an immune inflammatory response. The findings collectively highlight the potential therapeutic efficacy of MSC-EVs in ameliorating fibrotic processes, oxidative stress, and inflammatory responses associated with PF.</p><p><strong>Conclusion: </strong>MSC-EVs could ameliorate fibrosis <i>in vitro</i> and <i>in vivo</i> by downregulating collagen deposition, oxidative stress, and immune-inflammatory responses.</p>","PeriodicalId":23775,"journal":{"name":"World journal of stem cells","volume":"16 6","pages":"670-689"},"PeriodicalIF":3.6,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11212550/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}