Geun-Ho Kang, Yeo Kyung Shin, Kyung Min Lim, Se Jong Kim, Myeongjin Song, Kwonwoo Song, Jung Hyun Kim, Dae Young Kim, Hang-Cheol Shin, Hyun Jin Shin, Ssang-Goo Cho
{"title":"Thermostable bFGF Improves Cell Lifespan by Enhancing Cell Activity in the Long-Term Culture of Human Orbicularis Oculi Stem Cells.","authors":"Geun-Ho Kang, Yeo Kyung Shin, Kyung Min Lim, Se Jong Kim, Myeongjin Song, Kwonwoo Song, Jung Hyun Kim, Dae Young Kim, Hang-Cheol Shin, Hyun Jin Shin, Ssang-Goo Cho","doi":"10.15283/ijsc24039","DOIUrl":"https://doi.org/10.15283/ijsc24039","url":null,"abstract":"<p><p>Stem cells derived from human orbicularis oculi muscle (hOOM) are a valuable resource for cell therapy. However, when stem cells are continuously cultured, their abilities tend to deteriorate over time. One method to address this issue is to use basic fibroblast growth factor (bFGF) to maintain the stem cell functionality. The limitation is that bFGF is unstable under mammalian cell culture conditions with a half-life of only 8 hours, which poses a significant challenge to the production and maintenance of high-quality stem cells. In this study, we used thermostable bFGF (TS-bFGF) and demonstrated that hOOM-derived stem cells cultured with TS-bFGF exhibited superior proliferation, stem cell function, reduced reactive oxygen species, and cellular senescence delay effect compared to cells cultured with wild-type bFGF. Considering the pivotal role of stem cells in broad ranges of applications such as regenerative medicine and cultured meat, we anticipate that TS-bFGF, owing to its thermostability and long-lasting properties, will contribute significantly to the acquisition of high-quality stem cells.</p>","PeriodicalId":14392,"journal":{"name":"International journal of stem cells","volume":" ","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142500566","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}
Dat Ngo, Jeongmin Lee, Sun Jae Kwon, Jin Hun Park, Baek Hwan Cho, Jong Wook Chang
{"title":"Application of Deep Neural Networks in the Manufacturing Process of Mesenchymal Stem Cells Therapeutics.","authors":"Dat Ngo, Jeongmin Lee, Sun Jae Kwon, Jin Hun Park, Baek Hwan Cho, Jong Wook Chang","doi":"10.15283/ijsc24070","DOIUrl":"https://doi.org/10.15283/ijsc24070","url":null,"abstract":"<p><p>Current image-based analysis methods for monitoring cell confluency and status depend on individual interpretations, which can lead to wide variations in the quality of cell therapeutics. To overcome these limitations, images of mesenchymal stem cells cultured adherently in various types of culture vessels were captured and analyzed using a deep neural network. Among the various deep learning methods, a classification and detection algorithm was selected to verify cell confluency and status. We confirmed that the image classification algorithm demonstrates significant accuracy for both single- and multistack images. Abnormal cells could be detected exclusively in single-stack images, as multistack culture was performed only when abnormal cells were absent in the single-stack culture. This study is the first to analyze cell images based on a deep learning method that directly impacts yield and quality, which are important product parameters in stem cell therapeutics.</p>","PeriodicalId":14392,"journal":{"name":"International journal of stem cells","volume":" ","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142346749","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}
Ki-Sang Jo,Won-Jun Jo,Ainsley Mike Antao,Janardhan Keshav Karapurkar,Young Jun Park,Myeong-Jun Choi,Suresh Ramakrishna,Kye-Seong Kim
{"title":"An Efficient Endothelial Cell Differentiation Protocol Using Bioactive Lipid O-Cyclic Phytosphingosine-1-Phosphate in Human Embryonic Stem Cells.","authors":"Ki-Sang Jo,Won-Jun Jo,Ainsley Mike Antao,Janardhan Keshav Karapurkar,Young Jun Park,Myeong-Jun Choi,Suresh Ramakrishna,Kye-Seong Kim","doi":"10.15283/ijsc24068","DOIUrl":"https://doi.org/10.15283/ijsc24068","url":null,"abstract":"Bioactive lipids like sphingosine-1-phosphate (S1P) and lysophosphatidic acid have gained significant attention as signaling molecules with regulatory roles in stem cell proliferation and differentiation. The novel chemically synthesized sphingosine metabolite O-cyclic phytosphingosine-1-phosphate (cP1P) is derived from phytosphingosine-1-phosphate (P1P) and shares structural similarities with S1P. Previously, the role of cP1P in regulating ALK3/BMPR signaling during cardiomyocyte differentiation from human embryonic stem cells (hESCs) was demonstrated. In this study, the applicability of cP1P for endothelial cells (ECs) differentiation from hESCs was investigated an efficient method to obtain a high yield of functional ECs over several passages was standardized. The ECs derived from hESCs showed cellular and molecular characteristics similar to the native ECs. Thus, the results of this study open avenues for further research into cP1P-based stem cell differentiation for regenerative therapies.","PeriodicalId":14392,"journal":{"name":"International journal of stem cells","volume":"23 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187043","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":"Human Endometrial Regenerative Cells for Neurological Disorders: Hype or Hope?","authors":"Javad Momeni, Elnaz Naserzadeh, Ali Sepehrinezhad, Rezan Ashayeri Ahmadabad, Sajad Sahab Negah","doi":"10.15283/ijsc23091","DOIUrl":"10.15283/ijsc23091","url":null,"abstract":"<p><p>Despite enormous efforts, no effective medication has been found to significantly halt or even slow the progression of neurological diseases, such as acquired (e.g., traumatic brain injury, spinal cord injury, etc.) and chronic (e.g., Parkinson's disease, Alzheimer's disease, etc.) central nervous system disorders. So, researchers are looking for alternative therapeutic modalities to manage the disease's symptoms and stop it from worsening. Concerning disease-modifying capabilities, stem cell therapy has emerged as an expanding domain. Among different types of stem cells, human endometrial regenerative cells have excellent regenerative properties, making them suitable for regenerative medicine. They have the potential for self-renewal and differentiation into three types of stem cells: epithelial stem cells, endothelial side population stem cells, and mesenchymal stem cells (MSCs). ERCs can be isolated from endometrial biopsy and menstrual blood samples. However, there is no comprehensive evidence on the effects of ERCs on neurological disorders. Hence, we initially explore the traits of these specific stem cells in this analysis, followed by an emphasis on their therapeutic potential in treating neurological disorders.</p>","PeriodicalId":14392,"journal":{"name":"International journal of stem cells","volume":" ","pages":"224-235"},"PeriodicalIF":2.5,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11361851/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139377593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Role of Exosomes from Mesenchymal Stem Cells in Spinal Cord Injury: A Systematic Review.","authors":"Haoyu Wang, Chunxia Zhao, Qingqing Rong, Jinghe Cao, Hongyi Chen, Ruolin Li, Bin Zhang, Peng Xu","doi":"10.15283/ijsc23092","DOIUrl":"10.15283/ijsc23092","url":null,"abstract":"<p><p>Spinal cord injury (SCI) is a serious nervous system disease that usually leads to the impairment of the motor, sensory, and autonomic nervous functions of the spinal cord, and it places a heavy burden on families and healthcare systems every year. Due to the complex pathophysiological mechanism of SCI and the poor ability of neurons to regenerate, the current treatment scheme has very limited effects on the recovery of spinal cord function. In addition, due to their unique advantages, exosomes can be used as carriers for cargo transport. In recent years, some studies have confirmed that treatment with mesenchymal stem cells (MSCs) can promote the recovery of SCI nerve function. The therapeutic effect of MSCs is mainly related to exosomes secreted by MSCs, and exosomes may have great potential in SCI therapy. In this review, we summarized the repair mechanism of mesenchymal stem cells-derived exosomes (MSCs-Exos) in SCI treatment and discussed the microRNAs related to SCI treatment based on MSCs-Exos and their mechanism of action, which is helpful to further understand the role of exosomes in SCI.</p>","PeriodicalId":14392,"journal":{"name":"International journal of stem cells","volume":" ","pages":"236-252"},"PeriodicalIF":2.5,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11361850/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138451460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Glutathione Dynamics in the Tumor Microenvironment: A Potential Target of Cancer Stem Cells and T Cells.","authors":"Youngjun Park, Eui Man Jeong","doi":"10.15283/ijsc24060","DOIUrl":"10.15283/ijsc24060","url":null,"abstract":"<p><p>Glutathione (GSH), the main cellular antioxidant, dynamically influences tumor growth, metastasis, and resistance to therapy in the tumor microenvironment (TME), which comprises cancer cells, immune cells, stromal cells, and non-cellular components, including the extracellular matrix, metabolites, hypoxia, and acidity. Cancer stem cells (CSCs) and T cells are minor but significant cell subsets of the TME. GSH dynamics influences the fate of CSCs and T cells. Here, we explored GSH dynamics in CSCs and T cells within the TME, as well as therapeutic approaches that could target these dynamics.</p>","PeriodicalId":14392,"journal":{"name":"International journal of stem cells","volume":" ","pages":"270-283"},"PeriodicalIF":2.5,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11361844/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141450490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Eun Jin Seo, Soyoung Park, Eungyung Lee, Yang Hoon Huh, Ye Eun Ha, Gabor J Tigyi, Taesung Jeong, Il Ho Jang, Jonghyun Shin
{"title":"Establishing Three-Dimensional Explant Culture of Human Dental Pulp Tissue.","authors":"Eun Jin Seo, Soyoung Park, Eungyung Lee, Yang Hoon Huh, Ye Eun Ha, Gabor J Tigyi, Taesung Jeong, Il Ho Jang, Jonghyun Shin","doi":"10.15283/ijsc23105","DOIUrl":"10.15283/ijsc23105","url":null,"abstract":"<p><p>Mesenchymal stem cells in the dental tissue indicate a disposition for differentiation into diverse dental lineages and contain enormous potential as the important means for regenerative medicine in dentistry. Among various dental tissues, the dental pulp contains stem cells, progenitor cells and odontoblasts for maintaining dentin homeostasis. The conventional culture of stem cells holds a limit as the living tissue constitutes the three-dimensional (3D) structure. Recent development in the organoid cultures have successfully recapitulated 3D structure and advanced to the assembling of different types. In the current study, the protocol for 3D explant culture of the human dental pulp tissue has been established by adopting the organoid culture. After isolating dental pulp from human tooth, the intact tissue was placed between two layers for Matrigel with addition of the culture medium. The reticular outgrowth of pre-odontoblast layer continued for a month and the random accumulation of dentin was observed near the end. Electron microscopy showed the cellular organization and <i>in situ</i> development of dentin, and immunohistochemistry exhibited the expression of odontoblast and stem cell markers in the outgrowth area. Three-dimensional explant culture of human dental pulp will provide a novel platform for understanding stem cell biology inside the tooth and developing the regenerative medicine.</p>","PeriodicalId":14392,"journal":{"name":"International journal of stem cells","volume":" ","pages":"330-336"},"PeriodicalIF":2.5,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11361853/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141590332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mingming Qin, Linzi Ma, Wenjing Du, Dingyao Chen, Guoqun Luo, Zhaoting Liu
{"title":"Cytoplasmatic Localization of Six1 in Male Testis and Spermatogonial Stem Cells.","authors":"Mingming Qin, Linzi Ma, Wenjing Du, Dingyao Chen, Guoqun Luo, Zhaoting Liu","doi":"10.15283/ijsc23093","DOIUrl":"10.15283/ijsc23093","url":null,"abstract":"<p><p>Sine oculis homeobox 1 (Six1) is an important factor for embryonic development and carcinoma malignancy. However, the localization of Six1 varies due to protein size and cell types in different organs. In this study, we focus on the expression and localization of Six1 in male reproductive organ via bioinformatics analysis and immunofluorescent detection. The potential interacted proteins with Six1 were also predicted by protein-protein interactions (PPIs) and Enrichr analysis. Bioinformatic data from The Cancer Genome Atlas and Genotype-Tissue Expression project databases showed that <i>SIX1</i> was highly expressed in normal human testis, but low expressed in the testicular germ cell tumor sample. Human Protein Atlas examination verified that SIX1 level was higher in normal than that in cancer samples. The sub-localization of SIX1 in different reproductive tissues varies but specifically in the cytoplasm and membrane in testicular cells. In mouse cells, single cell RNA-sequencing data analysis indicated that <i>Six1</i> expression level was higher in mouse spermatogonial stem cells (mSSCs) and differentiating spermatogonial than in other somatic cells. Immunofluorescence staining showed the cytoplasmic localization of Six1 in mouse testis and mSSCs. Further PPIs and Enrichr examination showed the potential interaction of Six1 with bone morphogenetic protein 4 (Bmp4) and catenin Beta-1 (CtnnB1) and stem cell signal pathways. Cytoplasmic localization of Six1 in male testis and mSSCs was probably associated with stem cell related proteins Bmp4 and CtnnB1 for stem cell development.</p>","PeriodicalId":14392,"journal":{"name":"International journal of stem cells","volume":" ","pages":"298-308"},"PeriodicalIF":2.5,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11361848/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139471942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chunmei Li, Suiyu Luo, Ai Guo, Ying Su, Yuhui Zhang, Yan Song, Mei Liu, Lu Wang, Yuanyuan Zhang
{"title":"Human Endometrium Derived Mesenchymal Stem Cells with Aberrant NOD1 Expression Are Associated with Ectopic Endometrial Lesion Formation.","authors":"Chunmei Li, Suiyu Luo, Ai Guo, Ying Su, Yuhui Zhang, Yan Song, Mei Liu, Lu Wang, Yuanyuan Zhang","doi":"10.15283/ijsc22200","DOIUrl":"10.15283/ijsc22200","url":null,"abstract":"<p><p>Nucleotide-binding oligomerization domain 1 (NOD1), a cytosolic pattern recognition receptor protein, plays a crucial role in innate immune responses. However, the functional expression of NOD1 in mesenchymal stem cells (MSCs) derived from endometriosis remains unclear. The aim of this study was to explore the functions of NOD1 in ectopic endometrial lesions. Tissues and MSCs were isolated from both normal endometrium and endometriosis. Immunohistochemistry and real time quantitative polymerase chain reaction (RT-qPCR) were used to determine the expression of NOD1 in the tissues/MSCs. Quantification of various cytokines was performed using RT-qPCR and enzyme-linked immunosorbent assay. To confirm the proliferation, invasion/migration, and apoptotic viabilities of the samples, Cell Counting Kit-8, clonogenic formation, transwell assays, and apoptotic experiments were conducted. Higher levels of NOD1 expression were detected in the ectopic-MSCs obtained from endometriosis compared to those from the endometrium. The expression of interleukin-8 was higher in the ectopic-MSCs than in the eutopic-MSCs. Pretreatment with NOD1 agonist significantly enhanced the proliferation and invasion/migration of eutopic-MSCs. Additionally, the NOD1 inhibitor ML-130 significantly reduced the proliferation, clone formation, invasion, and migration abilities of the ectopic-MSCs, having no effect on their apoptosis capacity. Our findings suggest that the expression of NOD1 in ectopic-MSCs may contribute to the progression of ectopic endometrial lesions.</p>","PeriodicalId":14392,"journal":{"name":"International journal of stem cells","volume":" ","pages":"309-318"},"PeriodicalIF":2.5,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11361846/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140293503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}