STEM CELLS最新文献

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Rabbit Induced Pluripotent Stem Cells -Derived Mesenchymal Stem Cells for Enhanced Wound Healing. 兔诱导多能干细胞衍生间充质干细胞促进伤口愈合。
IF 4 2区 医学
STEM CELLS Pub Date : 2025-05-16 DOI: 10.1093/stmcls/sxaf028
Hsing-Yi Yu, Yang-Zhe Huang, Edward Chern
{"title":"Rabbit Induced Pluripotent Stem Cells -Derived Mesenchymal Stem Cells for Enhanced Wound Healing.","authors":"Hsing-Yi Yu, Yang-Zhe Huang, Edward Chern","doi":"10.1093/stmcls/sxaf028","DOIUrl":"https://doi.org/10.1093/stmcls/sxaf028","url":null,"abstract":"<p><p>Mesenchymal stem cells (MSCs) are pivotal in regenerative medicine, particularly for their efficacy in tissue repair. However, sourcing high-quality MSCs presents challenges due to limited availability and compromised function. Induced pluripotent stem cells (iPSCs) offer a promising alternative for generating MSCs through specific differentiation protocols. In this study, we employed rabbit iPSCs to explore their capacity for differentiation into MSCs, facilitated by the use of SB431542, a TGF-β signaling inhibitor. Upon treatment with SB431542, rabbit iPSCs underwent embryoid body (EB) formation, leading to successful differentiation into the mesenchymal lineage. Our results demonstrated significant upregulation of mesodermal markers while reduced expression of ectodermal and endodermal markers, confirming effective MSC differentiation. Additionally, in a mouse wound healing model, rabbit iPSC-derived MSCs significantly enhanced wound closure compared to controls. These findings highlight the potential of SB431542 in generating functional iPSC-derived MSCs, offering valuable applications in regenerative medicine across species.</p>","PeriodicalId":231,"journal":{"name":"STEM CELLS","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pdgfrβ marks distinct mesenchymal and pericyte populations within the periosteum with overlapping cellular features. Pdgfrβ标志着骨膜内不同的间充质和周细胞群体,具有重叠的细胞特征。
IF 4 2区 医学
STEM CELLS Pub Date : 2025-05-15 DOI: 10.1093/stmcls/sxaf020
Ziyi Wang, Qizhi Qin, Neelima Thottappillil, Mario Gomez Salazar, Masnsen Cherief, Mary Archer, Deva Balaji, Aaron W James
{"title":"Pdgfrβ marks distinct mesenchymal and pericyte populations within the periosteum with overlapping cellular features.","authors":"Ziyi Wang, Qizhi Qin, Neelima Thottappillil, Mario Gomez Salazar, Masnsen Cherief, Mary Archer, Deva Balaji, Aaron W James","doi":"10.1093/stmcls/sxaf020","DOIUrl":"10.1093/stmcls/sxaf020","url":null,"abstract":"<p><p>Platelet-derived growth factor receptor β (Pdgfrβ) is a cell surface marker often present on mesenchymal progenitor cells, playing a key role in regulating cell proliferation, migration, and survival. In the skeleton, Pdgfrβ-positive cells have significant osteogenic potential, differentiating into osteoblasts after injury to promote bone repair and homeostasis. However, multiple cell types within bone tissue express Pdgfrβ and their overlapping or distinct cellular features remain incompletely understood. Using a combination of single-cell RNA sequencing and transgenic Pdgfrβ-CreERT2-mT/mG reporter mice, we examined Pdgfrβ+ cells in mouse long bone periosteum. By single-cell analysis, Pdgfrb expression was found among a subset of mesenchymal cells and universally among pericytes within the periosteum. Histologic analysis of Pdgfrβ reporter activity confirmed a combination of perivascular and non-perivascular Pdgfrβ-expressing cell types. When isolated, Pdgfrβ reporter+ skeletal periosteal cells showed enhanced colony-forming, proliferative, migratory, and osteogenic capacities. Pdgfrβ reporter+ cells were further distinguished by co-expression of the pericyte marker CD146, which yielded Pdgfrβ+CD146+ pericytes and Pdgfrβ+CD146- skeletal mesenchymal cells. Colony forming and proliferative capacity were most highly enriched among Pdgfrβ+CD146+ pericytes, while osteogenic differentiation was similarly enriched across both Pdgfrβ+ cell fractions. In summary, Pdgfrβ expression identifies multiple subsets of progenitor cells within long bone periosteum with or without perivascular distribution and with overlapping cellular features.</p>","PeriodicalId":231,"journal":{"name":"STEM CELLS","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143951832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
RUNX1 is a key inducer of human hematopoiesis controlling non-hematopoietic mesodermal development. RUNX1是人类造血控制非造血中胚层发育的关键诱导剂。
IF 4 2区 医学
STEM CELLS Pub Date : 2025-05-15 DOI: 10.1093/stmcls/sxaf019
Zahir Shah, Cuihua Wang, Hanif Ullah, Hao You, Elena S Philonenko, Olga V Regan, Pavel Volchkov, Yong Dai, Jianhua Yu, Igor M Samokhvalov
{"title":"RUNX1 is a key inducer of human hematopoiesis controlling non-hematopoietic mesodermal development.","authors":"Zahir Shah, Cuihua Wang, Hanif Ullah, Hao You, Elena S Philonenko, Olga V Regan, Pavel Volchkov, Yong Dai, Jianhua Yu, Igor M Samokhvalov","doi":"10.1093/stmcls/sxaf019","DOIUrl":"10.1093/stmcls/sxaf019","url":null,"abstract":"<p><p>The RUNX1/AML1 transcription factor is one of the key regulators of definitive hematopoietic development in mice. However, its role in early human hematopoiesis remains poorly investigated. In this study, we integrated a tdTomato reporter cassette into the RUNX1 locus of human pluripotent stem cells (hPSCs) to monitor and block the expression of the gene during hPSC differentiation. This approach demonstrated that expression of RUNX1 starts early in mesodermal specification focusing later on hemogenic endothelium (HE) and nascent hematopoietic cells. Lack of RUNX1 halted the development of CD43+ and CD235-CD45+ hematopoietic cells, preventing the production of clonogenic hematopoietic progenitors including the multilineage ones. The abrogation of RUNX1 resulted in the failure of definitive lineages, specifically T and NK cells. Remarkably, we instead observed the accumulation of RUNX1-null HE cells at the stage of blood cell generation. Moreover, the loss of the gene biased the development toward the lineage of CD43-CD146+CD90+CD73+ mesenchymal cells. RNA-seq analysis of RUNX1-null cells revealed the downregulation of top-level hematopoietic transcription factor genes and the reciprocal upregulation of genes associated with non-hematopoietic cells of mesodermal origin. Forced expression of RUNX1c in differentiating RUNX1-null hPSCs effectively rescued the development of CD45+ myeloid cells and megakaryocytes. Our data demonstrate that RUNX1 is a top hematopoietic inducer that simultaneously controls the expansion of non-hematopoietic lineages.</p>","PeriodicalId":231,"journal":{"name":"STEM CELLS","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143954424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nephron progenitor fate is modulated by angiotensin type 1 receptor signaling in human kidney organoids. 肾素祖细胞的命运是由血管紧张素1型受体信号在人肾类器官中调节的。
IF 4 2区 医学
STEM CELLS Pub Date : 2025-05-15 DOI: 10.1093/stmcls/sxaf012
Hyunjae Chung, Waleed Rahmani, Sarthak Sinha, Aysa Imanzadeh, Alexander Pun, Rohit Arora, Arzina Jaffer, Jeff Biernaskie, Justin Chun
{"title":"Nephron progenitor fate is modulated by angiotensin type 1 receptor signaling in human kidney organoids.","authors":"Hyunjae Chung, Waleed Rahmani, Sarthak Sinha, Aysa Imanzadeh, Alexander Pun, Rohit Arora, Arzina Jaffer, Jeff Biernaskie, Justin Chun","doi":"10.1093/stmcls/sxaf012","DOIUrl":"10.1093/stmcls/sxaf012","url":null,"abstract":"<p><p>The renin-angiotensin system (RAS) is essential for normal kidney development. Dysregulation of the RAS during embryogenesis can result in kidney abnormalities. To explore how angiotensin type 1 receptor (AT1R) signaling modulates nephron progenitor (NP) fate specification, we used induced pluripotent stem cell (iPSC) derived human kidney organoids treated with angiotensin II (Ang II) or the AT1R blocker losartan during differentiation. Ang II promoted NP proliferation and differentiation preferentially toward a podocyte fate, depleted the podocyte precursor population, and accelerated glomerular maturation. By contrast, losartan expanded the podocyte precursor population, delayed podocyte differentiation, and regressed the transcriptional signature to a more immature fetal state. Overall, using various in silico approaches with validation by RNAscope, we identified a role for AT1R signaling in regulating NP fate during nephrogenesis in kidney organoids. Our work supports the use of RAS modulators to improve organoid maturation and suggests that RAS may be a determinant of nephron endowment in vivo.</p>","PeriodicalId":231,"journal":{"name":"STEM CELLS","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12080355/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143661866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In Reply to Letter to the Editor from Paudel: Comment on "Changes in iPSC-Astrocyte Morphology Reflect Alzheimer's Disease Patient Clinical Markers". 回复pauldel给编辑的信:关于“ipsc -星形细胞形态变化反映阿尔茨海默病患者临床标志物”的评论。
IF 4 2区 医学
STEM CELLS Pub Date : 2025-05-15 DOI: 10.1093/stmcls/sxaf031
Noel J Buckley, Helen A Rowland
{"title":"In Reply to Letter to the Editor from Paudel: Comment on \"Changes in iPSC-Astrocyte Morphology Reflect Alzheimer's Disease Patient Clinical Markers\".","authors":"Noel J Buckley, Helen A Rowland","doi":"10.1093/stmcls/sxaf031","DOIUrl":"https://doi.org/10.1093/stmcls/sxaf031","url":null,"abstract":"","PeriodicalId":231,"journal":{"name":"STEM CELLS","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Renal protective effects of extracellular vesicle-encapsulated tumor necrosis factor-α-induced protein 6 derived from mesenchymal stem cells. 间充质干细胞细胞外囊泡包膜肿瘤坏死因子-α-诱导蛋白6的肾保护作用。
IF 4 2区 医学
STEM CELLS Pub Date : 2025-05-15 DOI: 10.1093/stmcls/sxaf022
Keisuke Morimoto, Ayumu Nakashima, Naoki Ishiuchi, Kisho Miyasako, Yoshiki Tanaka, Kensuke Sasaki, Go Matsuda, Satoshi Maeda, Shigeru Miyaki, Takao Masaki
{"title":"Renal protective effects of extracellular vesicle-encapsulated tumor necrosis factor-α-induced protein 6 derived from mesenchymal stem cells.","authors":"Keisuke Morimoto, Ayumu Nakashima, Naoki Ishiuchi, Kisho Miyasako, Yoshiki Tanaka, Kensuke Sasaki, Go Matsuda, Satoshi Maeda, Shigeru Miyaki, Takao Masaki","doi":"10.1093/stmcls/sxaf022","DOIUrl":"10.1093/stmcls/sxaf022","url":null,"abstract":"<p><p>Acute kidney injury (AKI) is involved in subsequent chronic kidney disease (CKD) development, and effective treatments to prevent AKI to CKD progression are lacking. Mesenchymal stem cells (MSCs) are emerging as a promising cellular therapy to impede such progression through the secretion of various humoral factors. Among these factors, tumor necrosis factor-α-induced protein 6 (TSG-6) has a central role in the anti-inflammatory effects of MSCs. However, the mechanisms by which MSCs secrete TSG-6 and exert anti-inflammatory effects are not fully clarified. Here, we investigated these mechanisms using TSG-6-overexpressing MSCs (TSG-6 MSCs) with an adeno-associated virus. Extracellular vesicles (EVs) were isolated from MSC culture supernatants by ultracentrifugation. MSCs were injected through the abdominal aorta into rats with ischemia-reperfusion injury (IRI) to evaluate their anti-inflammatory and anti-fibrotic effects. Additionally, we explored natural compounds that increased TSG-6 expression in MSCs. Most TSG-6 was immediately secreted in EVs and was not stored intracellularly. Administration of TSG-6 MSCs strongly suppressed renal fibrosis and inflammation in IRI rats. Although EVs and conditioned medium from TSG-6 MSCs (TSG-6 MSC-CM) strongly promoted polarization of M2 macrophages, TSG-6 MSC-CM after EV depletion promoted it only slightly. Moreover, TSG-6 MSC-CM enhanced regulatory T-cell induction. MSCs treated with indole-3-carbinol had enhanced TSG-6 expression and markedly suppressed IRI-induced renal fibrosis. Taken together, TSG-6 is secreted in EVs from MSCs and exerts potent anti-inflammatory effects by promoting M2 macrophage polarization and regulatory T-cell induction. Administration of MSCs with enhanced TSG-6 secretion is a promising therapeutic strategy to impede AKI to CKD progression.</p>","PeriodicalId":231,"journal":{"name":"STEM CELLS","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143958680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stem cells and female reproduction: endometrial physiology, disease and therapy. 干细胞与女性生殖:子宫内膜生理学、疾病和治疗。
IF 4 2区 医学
STEM CELLS Pub Date : 2025-05-15 DOI: 10.1093/stmcls/sxaf016
E Cansu Cevik, Ramanaiah Mamillapalli, Hugh S Taylor
{"title":"Stem cells and female reproduction: endometrial physiology, disease and therapy.","authors":"E Cansu Cevik, Ramanaiah Mamillapalli, Hugh S Taylor","doi":"10.1093/stmcls/sxaf016","DOIUrl":"10.1093/stmcls/sxaf016","url":null,"abstract":"<p><p>The human endometrium, a dynamic tissue that undergoes cyclical shedding, repair, regeneration, and remodeling, relies on progenitor stem cells for replenishment. Bone marrow-derived mesenchymal stem cells (BM-MSCs) also may play a crucial role in the physiological process of endometrial regeneration, augmenting endometrial repair, supporting pregnancy, and thereby making a major contribution to reproduction. Notably, defective or inappropriate recruitment and engraftment of stem cells are implicated in various reproductive diseases, including endometriosis, highlighting the potential therapeutic avenues offered by stem cell-targeted interventions. Endometrial progenitor cells have shown promise in improving pregnancy outcomes and addressing infertility issues. Furthermore, BM-MSCs demonstrate the potential to reverse pathologies, including Asherman's syndrome and thin endometrium, offering novel approaches to treating infertility, implantation failure, and recurrent pregnancy loss. Mobilization of endogenous stem cells to areas of pathology through chemoattractants also presents a promising strategy for targeted therapy. Finally, endometrium-derived mesenchymal stem cells, characterized by their multipotent nature and ease of collection through minimally invasive techniques, hold promise in a wide range of reproductive and non-reproductive pathologies, including diabetes, kidney disease, Parkinson's disease, or cardiac disorders. As the best of our knowledge of stem cell biology continues to grow, the incorporation of stem cell-based therapies into clinical practice presents significant potential to transform reproductive medicine and enhance patient outcomes.</p>","PeriodicalId":231,"journal":{"name":"STEM CELLS","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143962250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
METTL3 promotes osteogenesis by regulating N6-methyladenosine-dependent primary processing of hsa-miR-4526. METTL3通过调节n6 -甲基腺苷依赖的hsa-miR-4526初级加工促进成骨。
IF 4 2区 医学
STEM CELLS Pub Date : 2025-05-15 DOI: 10.1093/stmcls/sxae089
Yidan Song, Hongyu Gao, Yihua Pan, Yuxi Gu, Wentian Sun, Jun Liu
{"title":"METTL3 promotes osteogenesis by regulating N6-methyladenosine-dependent primary processing of hsa-miR-4526.","authors":"Yidan Song, Hongyu Gao, Yihua Pan, Yuxi Gu, Wentian Sun, Jun Liu","doi":"10.1093/stmcls/sxae089","DOIUrl":"10.1093/stmcls/sxae089","url":null,"abstract":"<p><strong>Background: </strong>The function and mechanism of pri-miRNA N6-methyladenosine (m6A) modification in promoting miRNA maturation and regulating osteoblastic differentiation are not fully understood. The aim of this study was to investigate the role and regulatory mechanism of miRNA shear maturation regulated by methyltransferase like 3 (METTL3) in human adipose-derived stem cell (hASC) osteogenesis.</p><p><strong>Methods and results: </strong>First, we found METTL3 promoted osteogenesis both in vivo and in vitro. Subsequently, 3 pri-miRNAs with the most significant methylated peaks were identified through methylated RNA immunoprecipitation sequencing. Through quantitative real-time polymerase chain reaction, MeRIP-qPCR, and co-immunoprecipitation, it was determined that METTL3 promoted the processing of hsa-miR-4526 by mediating pri-miR4526/5190 m6A modification. Subsequent in vivo and in vitro experiments demonstrated that hsa-miR-4526 promoted osteogenesis. Dual luciferase reporter assay was performed to verify that hsa-miR-4526 regulated osteogenic differentiation through TUBB3. It was found that TUBB3 can inhibit hASC osteogenesis. Further rescue experiments confirmed that METTL3 inhibited TUBB3 expression through hsa-miR-4526, thereby regulating osteogenic differentiation. RNA-seq revealed that TUBB3 may be involved in cell metabolism, calcium enrichment, osteoclast differentiation, and other pathways.</p><p><strong>Conclusion: </strong>Our study is the first to investigate the mechanism of pri-miRNA m6A modification in regulating hASC osteogenesis, presenting a novel idea and method for repairing bone defects.</p>","PeriodicalId":231,"journal":{"name":"STEM CELLS","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142930194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Adult human heart extracellular matrix improves human iPSC-CM function via mitochondrial and metabolic maturation. 成人心脏ECM通过线粒体和代谢成熟改善人iPSC-CM功能。
IF 4 2区 医学
STEM CELLS Pub Date : 2025-05-15 DOI: 10.1093/stmcls/sxaf005
S Gulberk Ozcebe, Mateo Tristan, Pinar Zorlutuna
{"title":"Adult human heart extracellular matrix improves human iPSC-CM function via mitochondrial and metabolic maturation.","authors":"S Gulberk Ozcebe, Mateo Tristan, Pinar Zorlutuna","doi":"10.1093/stmcls/sxaf005","DOIUrl":"10.1093/stmcls/sxaf005","url":null,"abstract":"<p><p>Myocardial infarction can lead to the loss of billions of cardiomyocytes, and while cell-based therapies are an option, immature nature of in vitro-generated human induced pluripotent stem cell (iPSC)-derived cardiomyocytes (iCMs) is a roadblock to their development. Existing iPSC differentiation protocols don't go beyond producing fetal iCMs. Recently, adult extracellular matrix (ECM) was shown to retain tissue memory and have some success driving tissue-specific differentiation in unspecified cells in various organ systems. Therefore, we focused on investigating the effect of adult human heart-derived extracellular matrix (ECM) on iPSC cardiac differentiation and subsequent maturation. By preconditioning iPSCs with ECM, we tested whether creating cardiac environments around iPSCs would drive iPSCs toward cardiac fate and which ECM components might be involved. We report novel high- and low-abundance proteomes of young, adult, and aged human hearts, with relative abundances to total proteins and each other. We found that adult ECM had extracellular galactin-1, fibronectin, fibrillins, and perlecan (HSPG2) which are implicated in normal heart development. We also showed preconditioning iPSCs with adult cardiac ECM resulted in enhanced cardiac differentiation, yielding iCMs with higher functional maturity, more developed mitochondrial network and coverage, enhanced metabolic maturity, and shift towards more energetic profile. These findings demonstrate the potential use of cardiac ECM in iCM maturation and as a promising strategy for developing iCM-based therapies, disease modeling, and drug screening studies. Upon manipulating ECM, we concluded that the beneficial effects observed were not solely due to the ECM proteins, which might be related to the decorative units attached.</p>","PeriodicalId":231,"journal":{"name":"STEM CELLS","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12080356/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143035483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Newborn apical resection preserves the proliferative capacity of cardiomyocytes located throughout the left ventricle. 新生儿根尖切除保留了位于整个左心室的心肌细胞的增殖能力。
IF 4 2区 医学
STEM CELLS Pub Date : 2025-05-15 DOI: 10.1093/stmcls/sxaf018
Kaili Hao, Thanh Nguyen, Yuji Nakada, Gregory Walcott, Yuhua Wei, Yalin Wu, Daniel J Garry, Peng Yao, Jianyi Zhang
{"title":"Newborn apical resection preserves the proliferative capacity of cardiomyocytes located throughout the left ventricle.","authors":"Kaili Hao, Thanh Nguyen, Yuji Nakada, Gregory Walcott, Yuhua Wei, Yalin Wu, Daniel J Garry, Peng Yao, Jianyi Zhang","doi":"10.1093/stmcls/sxaf018","DOIUrl":"10.1093/stmcls/sxaf018","url":null,"abstract":"<p><strong>Background: </strong>When pigs underwent apical resection (AR) on postnatal day (P) 1 (ARP1) followed by myocardial infarction (MI) on P28, the hearts had little evidence of scarring; meanwhile, hearts underwent MI on P28 without ARP1 showed large infarcts on P56; and the improvement of ARP1 hearts was driven primarily by cardiomyocyte proliferation. AR and MI were performed ~5 mm (AR) and ~20 mm (MI) above the heart apex; thus, we hypothesize that ARP1 preserved the cardiomyocytes cell-cycle throughout the left ventricle, rather than only near the resection site.</p><p><strong>Methods: </strong>Sections of cardiac tissue were collected from the left ventricle of uninjured pigs and from both the border zone (BZ) of AR and uninjured regions (remote zone, [RZ]) in ARP1 hearts. Cardiomyocyte proliferation was evaluated via immunofluorescence analysis of phosphorylated histone 3 [PH3] and symmetric Aurora B (sAuB). Single nucleus RNA sequencing (snRNAseq) data collected from the hearts of fetal pigs, uninjured pigs, and the BZ and RZ of ARP1 pigs was evaluated via our cell-cycle-specific autoencoder to identify proliferating cardiomyocytes.</p><p><strong>Results: </strong>Cardiomyocyte PH3 and sAuB expression, and percentage of proliferating cardiomyocytes in snRNA data was significantly more common in both BZ and RZ of ARP1 than uninjured hearts but did not differ significantly between the ARP1-BZ and ARP1-RZ at any time point. Heat shock proteins HSPA5 and HSP90B1 were overexpressed at both ARP1-BZ and ARP1-RZ. In AC16 cell, overexpression (and knockdown) of HSPA5-HSP90B1 increased (and decrease) cell-cycle activity.</p><p><strong>Conclusion: </strong>ARP1 preserved proliferative capacity of cardiomyocytes located throughout the left ventricle.</p>","PeriodicalId":231,"journal":{"name":"STEM CELLS","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12080357/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143955792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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