Khyati Raina, Kirti Modak, Chitra Premkumar, Gaurav Joshi, Dhavapriya Palani, Krittika Nandy, Yazhini Sivamani, Shaji R Velayudhan, Rajkumar P Thummer
{"title":"UTF1 Expression is Important for the Generation and Maintenance of Human iPSCs.","authors":"Khyati Raina, Kirti Modak, Chitra Premkumar, Gaurav Joshi, Dhavapriya Palani, Krittika Nandy, Yazhini Sivamani, Shaji R Velayudhan, Rajkumar P Thummer","doi":"10.1007/s12015-024-10836-x","DOIUrl":"https://doi.org/10.1007/s12015-024-10836-x","url":null,"abstract":"<p><strong>Background: </strong>Undifferentiated embryonic cell transcription factor 1 (UTF1) is predominantly expressed in pluripotent stem cells and plays a vital role in embryonic development and pluripotency maintenance. Despite its established importance in murine models, the role of UTF1 on human induced pluripotent stem cells (iPSCs) has not been comprehensively studied.</p><p><strong>Methods: </strong>This study utilized CRISPR/Cas9 gene editing to create UTF1 knockout in human fibroblasts and iPSCs. We employed episomal vectors for reprogramming UTF1 knockout fibroblasts into iPSCs and analyzed the effects of UTF1 depletion on cellular morphology, pluripotency, and viability through Western blotting, PCR, and flow cytometry. In addition, we integrated an shRNA that downregulated the expression of UTF1 for mechanistic studies to understand the impact of UTF1 depletion in iPSC pluripotency and differentiation.</p><p><strong>Results: </strong>UTF1 knockout resulted in significantly reduced reprogramming efficiency and increased spontaneous differentiation, indicating its crucial role in maintaining human iPSC identity and stability. In knockdown experiments, gradual loss of UTF1 led to change in cellular morphologies and decreased expression of core pluripotency markers OCT4 and SOX2. Interestingly, unlike complete UTF1 knockout, the gradual downregulation of UTF1 in iPSCs did not result in apoptosis, suggesting that the loss of pluripotency can occur independently of the apoptotic pathways.</p><p><strong>Conclusions: </strong>UTF1 is essential for maintaining the pluripotency and viability of human iPSCs. Its depletion affects the fundamental properties of stem cells, underscoring the potential challenges in using UTF1-deficient cells for therapeutic applications. Future studies should explore the mechanistic pathways through which UTF1 controls pluripotency and differentiation, which could provide insights into improving iPSC stability for clinical applications.</p>","PeriodicalId":21955,"journal":{"name":"Stem Cell Reviews and Reports","volume":" ","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142928236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Commemorating Professor Hal Broxmeyer.","authors":"","doi":"10.1007/s12015-024-10837-w","DOIUrl":"https://doi.org/10.1007/s12015-024-10837-w","url":null,"abstract":"","PeriodicalId":21955,"journal":{"name":"Stem Cell Reviews and Reports","volume":" ","pages":""},"PeriodicalIF":4.5,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142898282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Georgia P Wong, Sunhild Hartmann, Olivia Nonn, Ping Cannon, Tuong-Vi Nguyen, Manju Kandel, Natasha de Alwis, Ciara N Murphy, Natasha Pritchard, Ralf Dechend, Natalie J Hannan, Stephen Tong, David G Simmons, Tu'uhevaha J Kaitu'u-Lino
{"title":"Stem Cell Markers LGR5, LGR4 and Their Immediate Signalling Partners are Dysregulated in Preeclampsia.","authors":"Georgia P Wong, Sunhild Hartmann, Olivia Nonn, Ping Cannon, Tuong-Vi Nguyen, Manju Kandel, Natasha de Alwis, Ciara N Murphy, Natasha Pritchard, Ralf Dechend, Natalie J Hannan, Stephen Tong, David G Simmons, Tu'uhevaha J Kaitu'u-Lino","doi":"10.1007/s12015-024-10831-2","DOIUrl":"https://doi.org/10.1007/s12015-024-10831-2","url":null,"abstract":"<p><p>Leucine-rich repeat-containing G protein-coupled receptors 5/4 (LGR5/LGR4) are critical stem cell markers in epithelial tissues including intestine. They agonise wingless-related integration site (WNT) signalling. Until now, LGR5/LGR4 were uncharacterised in placenta, where analogous functions may exist. We characterised LGR5/LGR4, their ligands/targets in human placenta, with further assessments on dysregulation in preeclampsia/fetal growth restriction (FGR). LGR5 mRNA was unaltered in first trimester (n = 11), preterm (n = 9) and term (n = 11) placental lysate. LGR5 was enriched in human trophoblast stem cells (hTSCs) and downregulated with differentiation to extravillous trophoblasts (p < 0.0215) and syncytiotrophoblasts (p < 0.0350). In situ hybridisation localised LGR5 to unique, proliferative MKI67 + mononuclear trophoblasts underlying syncytium which concurred with proposed progenitor identities in single-cell transcriptomics. LGR5 expression was significantly reduced in placentas from early-onset preeclampsia (p < 0.0001, n = 81 versus n = 19 controls), late-onset preeclampsia (p = 0.0046, n = 20 versus n = 33 controls) and FGR (p = 0.0031, n = 34 versus n = 17 controls). LGR4 was elevated in first trimester versus preterm and term placentas (p = 0.0412), in placentas with early-onset preeclampsia (p = 0.0148) and in FGR (p = 0.0417). Transcriptomic analysis and in vitro hTSC differentiation to both trophoblast lineages suggested LGR4 increases with differentiation. Single-nucleus RNA sequencing of placental villous samples supported LGR5 and LGR4 localisation findings. Hypoxia/proinflammatory cytokine treatment modelling elements experienced by the placenta in placental insufficiency pathogenesis did not significantly alter LGR5/LGR4. Ligands R-spondins 1/3/4, and neutralising targets ring finger protein 43 (RNF43) and zinc and ring finger 3 (ZNRF3) were also reduced in placentas from preeclamptic pregnancies. This study is the first to describe LGR5/LGR4 and their signalling partner expression in human placenta. Their dysregulations in the preeclamptic placenta allude to disruptions to integral trophoblast stem cell function/differentiation that may occur during placental development related to WNT signalling.</p>","PeriodicalId":21955,"journal":{"name":"Stem Cell Reviews and Reports","volume":" ","pages":""},"PeriodicalIF":4.5,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142839902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jean Chevaleyre, Laura Rodriguez, Esther Attebi, Pascale Duchez, Zoran Ivanovic
{"title":"An Injectable Solution for Preservation of Hematopoietic Stem and Progenitors Cells in Hypothermic Condition.","authors":"Jean Chevaleyre, Laura Rodriguez, Esther Attebi, Pascale Duchez, Zoran Ivanovic","doi":"10.1007/s12015-024-10829-w","DOIUrl":"https://doi.org/10.1007/s12015-024-10829-w","url":null,"abstract":"<p><p>To ensure the preservation of functional hematopoietic stem cells (HSC) and committed progenitor cells (HPC) at + 4 °C in ex vivo expanded cord blood cell products during worldwide transportation and subsequent infusion-without the need for washing and cell concentration-we developed a conservation medium called Stabilizer of Expanded Cells (SEC), composed exclusively of injectable pharmacological products. The in vivo engraftment assay in immunodeficient mice was used to detect primitive HSCs before and after preservation at + 4 °C. In some experiments, a complex phenotype based on CD34, CD38, and CD133 expression was utilized for this purpose. Committed progenitors (CFU-GM, BFU-E, and CFU-Mix) were detected using methylcellulose culture colony-forming assays. Additionally, in some cases, the energetic metabolism (mitochondrial respiration) was evaluated using Seahorse technology. SEC was able to preserve the functionality of HSCs and HPCs in ex vivo expanded cell populations at + 4 °C for at least 48 h. Furthermore, SEC is also effective in fully preserving HSCs and HPCs in cytapheresis products for at least 72 h. Additionally, SEC enabled the full preservation of HSCs and HPCs for 72 h in freshly collected cord blood, maintaining a normal metabolic profile of CD34<sup>+</sup> cells. The SEC medium exhibits a positive effect on the maintenance of both HSCs and HPCs at + 4 °C, regardless of their source. Therefore, SEC can be applied in cell therapy protocols based on HSCs and HPCs with a significant advantage: the product does not need to be washed and concentrated before injection into the patient.</p>","PeriodicalId":21955,"journal":{"name":"Stem Cell Reviews and Reports","volume":" ","pages":""},"PeriodicalIF":4.5,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142814371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Development and Applications of Organoids in Gynecological Diseases.","authors":"Jian Yang, Wenwen Li, Zihan Zhang, Zhonglei Xu, Wenjing Zhu, Jing Wang, Wenyan Wang","doi":"10.1007/s12015-024-10833-0","DOIUrl":"https://doi.org/10.1007/s12015-024-10833-0","url":null,"abstract":"<p><p>Organoids are rapidly self-organizing 3D in vitro cultures derived from pluripotent stem cells (PSCs) or adult stem cells (ASCs) that possess disease-like characteristics with high success rates. Due to their ability to retain tissue structure, biological phenotypes, and genetic information, they have been utilized as a novel in vitro model for disease research. In recent years, scientists have established self-organizing 3D organoids for human endometrium, fallopian tubes, ovaries, and cervix by culturing stem cells with cytokines in 3D scaffolds. The integration of organoids with animal models, organ-on-a-chip systems, and 3D printing technologies offers a novel preclinical model for exploring disease mechanisms and developing treatments. This review elaborate on the recent research progress of stem cells-formed organoids in the field of gynecology from the aspects of constructing gynecological disease organoids, drug screening and new drug development, simulation modeling, allogeneic transplantation, regenerative medicine and personalized treatment.\"</p>","PeriodicalId":21955,"journal":{"name":"Stem Cell Reviews and Reports","volume":" ","pages":""},"PeriodicalIF":4.5,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142814394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Isabella Fernandes Carvalho, Brenda Santos Veloso, José Ferreira da Cunha Filho, Samara Kelly da Silva Cavalcante, Milena Regia Sousa Ferreira, Maysa Luna de Souza, Daniela Franco Bueno
{"title":"Alveolar Bone Tissue Engineering Using Deciduous Dental Pulp Stem Cells in a Patient with Cleft Lip and Palate.","authors":"Isabella Fernandes Carvalho, Brenda Santos Veloso, José Ferreira da Cunha Filho, Samara Kelly da Silva Cavalcante, Milena Regia Sousa Ferreira, Maysa Luna de Souza, Daniela Franco Bueno","doi":"10.1007/s12015-024-10832-1","DOIUrl":"https://doi.org/10.1007/s12015-024-10832-1","url":null,"abstract":"<p><p>The use of tissue bioengineering strategies in dentistry has gained relevance. Many studies indicate that stem cells associated with biomaterials can regenerate intraoral tissues and have been applied to patients with cleft lip and palate (CLP). One of the treatments is alveolar bone reconstruction through bone grafts, where the bone is removed from the donor site and placed in the alveolar cleft. The use of stem cells from deciduous dental pulp, associated with a hydroxyapatite and collagen scaffold, can eliminate the need for autologous bone grafts, reducing pain and morbidity at the donor site. This study presents a case report in which a patient with cleft lip and palate was treated using this technique, resulting in complete filling of the alveolar cleft after 12 months.</p>","PeriodicalId":21955,"journal":{"name":"Stem Cell Reviews and Reports","volume":" ","pages":""},"PeriodicalIF":4.5,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142786712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daekee Kwon, Taewook Lee, Mijung Han, So-Woon Han, Kyung-Sun Kang
{"title":"Antifragile Treatment for Efficient Chimerism of Induced Pluripotent Stem Cells Derived Hematopoietic Stem Cells.","authors":"Daekee Kwon, Taewook Lee, Mijung Han, So-Woon Han, Kyung-Sun Kang","doi":"10.1007/s12015-024-10828-x","DOIUrl":"https://doi.org/10.1007/s12015-024-10828-x","url":null,"abstract":"<p><p>Engraftable hematopoietic stem cells (HSC) can be obtained from bone marrow, umbilical cord blood, and peripheral blood (PB). However, a major bottleneck in HSC transplantation is identifying an unrelated donor that completely matches the human leukocyte antigen type of the recipient. This issue can be resolved by producing patient-specific stem cells. The purpose of this study was to identify the conditions under which induced pluripotent stem cells (iPSC)-derived hematopoietic stem cells (iHSC) exhibit high efficiency. Because HSC are fragile and vulnerable to damage, this study was performed under the hypothesis that the engraftment rate could be increased by antifragile treatment. Antioxidant ginsenoside Rg1 was used to differentiate from iPSC to iHSC, and differentiated iHSC was intravenously injected into Balb/c nude mouse conditioned with diverse concentrations of busulfan. Engraftment was verified by the presence of human-specific markers in the PB at 2 and 8 weeks post iHSC transplantation. iHSC differentiated by incorporating 1 µM of Rg1 demonstrated high colony forming efficiency in vitro. Additionally, high efficiency engraftment occurred immediately after iHSC were transplanted into mice conditioned with high dose busulfan at a dosage of 125 mg/kg or higher. In this study, high-quality iHSC manufacturing and transplantation conditions capable of high efficiency engraftment in vivo were established. Hereafter, this method of producing HSC using patient-specific iPSC will become the fourth new source of HSC. Additionally, if gene-editing technology is applied, the scope of its application can be expanded to diverse infectious diseases.</p>","PeriodicalId":21955,"journal":{"name":"Stem Cell Reviews and Reports","volume":" ","pages":""},"PeriodicalIF":4.5,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142786713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Human Umbilical Cord Mesenchymal Stem Cell-Derived Exosomes Loaded Mir-29-3p Targets AhR to Improve Juvenile Idiopathic Arthritis via Inhibiting the Expression of IL-22 in CD4<sup>+</sup> T Cell.","authors":"Xinyi Wei, Kunpeng Sui, Yuanyuan Peng, Sha Li, Yu Fang, Zhi Chen, Xiao Du, Xue Xie, Haiming Tang, QiuYue Wen, JingWei Li, Meilin He, Qin Cheng, Wei Zhang","doi":"10.1007/s12015-024-10827-y","DOIUrl":"https://doi.org/10.1007/s12015-024-10827-y","url":null,"abstract":"<p><strong>Background: </strong>Juvenile idiopathic arthritis (JIA) is one of the most common chronic inflammatory rheumatic diseases in children. Human umbilical cord mesenchymal stem cells (HUCMSCs)-derived exosomes (HUCMSCs-Exos) are involved in autoimmune diseases. This study investigates the mechanism of HUCMSC-Exos in improving JIA by targeting AhR through delivery of miR-29-3p to inhibit IL-22 expression in CD4<sup>+</sup> T cells.</p><p><strong>Methods: </strong>Collagen induced arthritis (CIA) mouse model was established, and mice were treated with HUCMSCs-Exos and miR-29-3p antagomir, respectively. CD4<sup>+</sup> T cells from JIA patients were used for cell experiments. The mechanism was elucidated by histopathological staining, transmission electron microscopy (TEM), immunohistochemistry, CCK-8 assay, flow cytometry, Western blotting, real-time PCR, and enzyme-linked immunosorbent assay (ELISA), laser confocal microscopy, and luciferase assay.</p><p><strong>Result: </strong>JIA-CD4<sup>+</sup> T cells showed higher expression of IL-22 and lower the levels of miR-29-3p, while HUCMSCs-Exos significantly inhibited the expression of IL-22 and increased the levels of miR-29a-3p, miR-29b-3p, and miR-29c-3p in CD4<sup>+</sup> T cells from JIA patients. The expression of miR-29a-3p, miR-29b-3p, miR-29c-3p, AhR, and IL-22 in CD4<sup>+</sup> T cells was significantly reversed when co-cultured with HUCMSCs transfected with miR-29-3p mimic or miR-29-3p inhibitor. In vivo experiment, HUCMSCs-Exos ameliorated CIA mice by delivering miR-29-3p to inhibit AhR, IL-22, IL-22R1, MMP3, and MMP13 expression. Furthermore, HUCMSCs-Exos also deliver miR-29-3p targeting AhR expression to inhibit IL-22 in JIA-CD4 + T cells through alleviating arthritic synovial fibroblast activation.</p><p><strong>Conclusion: </strong>HUCMSCs-Exos loaded miR-29-3p targets AhR to improve JIA via inhibiting the expression of IL-22 in CD4<sup>+</sup> T cell, which provides a scientific basis for the treatment of JIA.</p>","PeriodicalId":21955,"journal":{"name":"Stem Cell Reviews and Reports","volume":" ","pages":""},"PeriodicalIF":4.5,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142772472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
David M Smadja, Laetitia Mauge, Jeanne Rancic, Pascale Gaussem, Olivier Feraud, Noufissa Oudrhiri, Annelise Bennaceur-Griscelli
{"title":"Comparative Evaluation of Endothelial Colony-Forming Cells from Cord and Adult Blood vs. Human Embryonic Stem Cell-Derived Endothelial Cells: Insights into Therapeutic Angiogenesis Potential.","authors":"David M Smadja, Laetitia Mauge, Jeanne Rancic, Pascale Gaussem, Olivier Feraud, Noufissa Oudrhiri, Annelise Bennaceur-Griscelli","doi":"10.1007/s12015-024-10830-3","DOIUrl":"https://doi.org/10.1007/s12015-024-10830-3","url":null,"abstract":"<p><p>The discovery of endothelial progenitor cells has revolutionized our understanding of postnatal blood vessel formation, with endothelial colony-forming cells (ECFCs) emerging as key players in vasculogenesis. Among various ECFC sources, cord blood-derived ECFCs (CB-ECFCs) are of particular interest due to their superior proliferative and clonogenic potential and their ability to promote vascular network formation. Human embryonic stem cell-derived endothelial cells (hESC-ECs) have also shown potential in regenerative medicine, though their vasculogenic efficacy remains unclear compared to CB- and adult blood-derived ECFCs (AB-ECFCs). This study aimed to directly compare the angiogenic and vasculogenic capabilities of CB-ECFCs, AB-ECFCs, and hESC-ECs in vitro and in vivo. Our results demonstrated that CB-ECFCs had a significantly higher proliferation rate than both AB-ECFCs and hESC-ECs (p < 0.01). In tube formation assays, CB-ECFCs exhibited superior ability to form capillary-like structures compared to hESC-ECs (p < 0.0001) and AB-ECFCs (p < 0.01). In vivo, CB-ECFCs significantly improved blood flow recovery in ischemic tissue (p < 0.01), outperforming both AB-ECFCs and hESC-ECs, with no significant recovery observed in the latter two groups. These findings suggest that CB-ECFCs represent a more effective cell source for therapeutic angiogenesis, while further optimization is needed to enhance the efficacy of hESC-ECs for clinical applications. Future research should explore the molecular mechanisms underlying the superior regenerative potential of CB-ECFCs and focus on improving the stability and functionality of stem cell-derived ECs for therapeutic use.</p>","PeriodicalId":21955,"journal":{"name":"Stem Cell Reviews and Reports","volume":" ","pages":""},"PeriodicalIF":4.5,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142751718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yucheng Gao, Hao Wang, Liu Shi, Panpan Lu, Guangchun Dai, Ming Zhang, Bowen Han, Mumin Cao, Yingjuan Li, Yunfeng Rui
{"title":"Erroneous Differentiation of Tendon Stem/Progenitor Cells in the Pathogenesis of Tendinopathy: Current Evidence and Future Perspectives.","authors":"Yucheng Gao, Hao Wang, Liu Shi, Panpan Lu, Guangchun Dai, Ming Zhang, Bowen Han, Mumin Cao, Yingjuan Li, Yunfeng Rui","doi":"10.1007/s12015-024-10826-z","DOIUrl":"https://doi.org/10.1007/s12015-024-10826-z","url":null,"abstract":"<p><p>Tendinopathy is a condition characterized by persistent tendon pain, structural damage, and compromised functionality. Presently, the treatment for tendinopathy remains a formidable challenge, partly because of its unclear pathogenesis. Tendon stem/progenitor cells (TSPCs) are essential for tendon homeostasis, regeneration, remodeling, and repair. An innovative theory has been previously proposed, with insufficient evidence, that the erroneous differentiation of TSPCs may constitute one of the fundamental mechanisms underpinning tendinopathy. Over the past few years, there has been accumulating evidence for plausibility of this theory. In this review, we delve into alterations in the differentiation potential of TSPCs and the underlying mechanisms in the context of injury-induced tendinopathy, diabetic tendinopathy, and age-related tendinopathy to provide updated evidence on the erroneous differentiation theory. Despite certain limitations inherent in the existing body of evidence, the erroneous differentiation theory emerges as a promising and highly pertinent avenue for understanding tendinopathy. In the future, advanced methodologies will be harnessed to further deepen comprehension of this theory, paving the way for prospective developments in clinical therapies targeting TSPCs for the management of tendinopathy.</p>","PeriodicalId":21955,"journal":{"name":"Stem Cell Reviews and Reports","volume":" ","pages":""},"PeriodicalIF":4.5,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142695458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}