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Iordache F, Petcu A(I, Pisoschi AM, Stanca L, Geicu OI, Bilteanu L, Curuțiu C, Amuzescu B, Serban AI. PCR Array Profiling of miRNA Expression Involved in the Differentiation of Amniotic Fluid Stem Cells toward Endothelial and Smooth Muscle Progenitor Cells. Int J Mol Sci 2023; 25:302. [PMID: 38203477 PMCID: PMC10779355 DOI: 10.3390/ijms25010302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/17/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
Differentiation of amniotic fluid stem cells (AFSCs) into multiple lineages is controlled by epigenetic modifications, which include DNA methylation, modifications of histones, and the activity of small noncoding RNAs. The present study investigates the role of miRNAs in the differentiation of AFSCs and addresses how their unique signatures contribute to lineage-specific differentiation. The miRNA profile was assessed in AFSCs after 4 weeks of endothelial and muscular differentiation. Our results showed decreased expression of five miRNAs (miR-18a-5p, miR-125b-5p, miR-137, miR-21-5p, and let-7a) and increased expression of twelve miRNAs (miR-134-5p, miR-103a-3p, let-7i-5p, miR-214-3p, let-7c-5p, miR-129-5p, miR-210-3p, let-7d-5p, miR-375, miR-181-5p, miR-125a-5p, and hsa-let-7e-5p) in endothelial progenitor cells (EPCs) compared with undifferentiated AFSCs. AFSC differentiation into smooth muscle revealed notable changes in nine out of the 84 tested miRNAs. Among these, three miRNAs (miR-18a-5p, miR-137, and sa-miR-21-5p) were downregulated, while six miRNAs (miR-155-5p, miR-20a-5p, let-7i-5p, hsa-miR-134-5p, hsa-miR-214-3p, and hsa-miR-375) exhibited upregulation. Insights from miRNA networks promise future advancements in understanding and manipulating endothelial and muscle cell dynamics. This knowledge has the potential to drive innovation in areas like homeostasis, growth, differentiation, and vascular function, leading to breakthroughs in biomedical applications and therapies.
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Affiliation(s)
- Florin Iordache
- Department of Preclinical Sciences, Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 105 Blvd. Splaiul Independentei, 050097 Bucharest, Romania; (A.P.); (A.M.P.); (L.S.); (O.I.G.); (L.B.); (A.I.S.)
- S.C. Personal Genetics S.R.L. Genetic Medical Center, 010987 Bucharest, Romania
| | - Adriana (Ionescu) Petcu
- Department of Preclinical Sciences, Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 105 Blvd. Splaiul Independentei, 050097 Bucharest, Romania; (A.P.); (A.M.P.); (L.S.); (O.I.G.); (L.B.); (A.I.S.)
| | - Aurelia Magdalena Pisoschi
- Department of Preclinical Sciences, Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 105 Blvd. Splaiul Independentei, 050097 Bucharest, Romania; (A.P.); (A.M.P.); (L.S.); (O.I.G.); (L.B.); (A.I.S.)
| | - Loredana Stanca
- Department of Preclinical Sciences, Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 105 Blvd. Splaiul Independentei, 050097 Bucharest, Romania; (A.P.); (A.M.P.); (L.S.); (O.I.G.); (L.B.); (A.I.S.)
| | - Ovidiu Ionut Geicu
- Department of Preclinical Sciences, Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 105 Blvd. Splaiul Independentei, 050097 Bucharest, Romania; (A.P.); (A.M.P.); (L.S.); (O.I.G.); (L.B.); (A.I.S.)
| | - Liviu Bilteanu
- Department of Preclinical Sciences, Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 105 Blvd. Splaiul Independentei, 050097 Bucharest, Romania; (A.P.); (A.M.P.); (L.S.); (O.I.G.); (L.B.); (A.I.S.)
| | - Carmen Curuțiu
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independentei, 050095 Bucharest, Romania;
| | - Bogdan Amuzescu
- Department of Biophysics and Physiology, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independentei, 050095 Bucharest, Romania;
| | - Andreea Iren Serban
- Department of Preclinical Sciences, Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 105 Blvd. Splaiul Independentei, 050097 Bucharest, Romania; (A.P.); (A.M.P.); (L.S.); (O.I.G.); (L.B.); (A.I.S.)
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Tsai SCS, Yang KD, Chang KH, Lin FCF, Chou RH, Li MC, Cheng CC, Kao CY, Chen CP, Lin HC, Hsu YC. Umbilical Cord Mesenchymal Stromal Cell-Derived Exosomes Rescue the Loss of Outer Hair Cells and Repair Cochlear Damage in Cisplatin-Injected Mice. Int J Mol Sci 2021; 22:ijms22136664. [PMID: 34206364 PMCID: PMC8267798 DOI: 10.3390/ijms22136664] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 06/10/2021] [Accepted: 06/12/2021] [Indexed: 12/21/2022] Open
Abstract
Umbilical cord-derived mesenchymal stromal cells (UCMSCs) have potential applications in regenerative medicine. UCMSCs have been demonstrated to repair tissue damage in many inflammatory and degenerative diseases. We have previously shown that UCMSC exosomes reduce nerve injury-induced pain in rats. In this study, we characterized UCMSC exosomes using RNA sequencing and proteomic analyses and investigated their protective effects on cisplatin-induced hearing loss in mice. Two independent experiments were designed to investigate the protective effects on cisplatin-induced hearing loss in mice: (i) chronic intraperitoneal cisplatin administration (4 mg/kg) once per day for 5 consecutive days and intraperitoneal UCMSC exosome (1.2 μg/μL) injection at the same time point; and (ii) UCMSC exosome (1.2 μg/μL) injection through a round window niche 3 days after chronic cisplatin administration. Our data suggest that UCMSC exosomes exert protective effects in vivo. The post-traumatic administration of UCMSC exosomes significantly improved hearing loss and rescued the loss of cochlear hair cells in mice receiving chronic cisplatin injection. Neuropathological gene panel analyses further revealed the UCMSC exosomes treatment led to beneficial changes in the expression levels of many genes in the cochlear tissues of cisplatin-injected mice. In conclusion, UCMSC exosomes exerted protective effects in treating ototoxicity-induced hearing loss by promoting tissue remodeling and repair.
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Affiliation(s)
- Stella Chin-Shaw Tsai
- Department of Otolaryngology, Tungs’ Taichung Metroharbor Hospital, Taichung 435, Taiwan;
- Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, 145, Guoguang Rd., South Dist., Taichung City 402, Taiwan
| | - Kuender D. Yang
- Department of Medical Research, Mackay Memorial Hospital, Taipei 104, Taiwan; (K.D.Y.); (C.-P.C.)
- Department of Otolaryngology, Mackay Memorial Hospital, New Taipei City 251, Taiwan
| | - Kuang-Hsi Chang
- Department of Medical Research, Tungs’ Taichung Metroharbor Hospital, Taichung 435, Taiwan;
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung 406, Taiwan;
- General Education Center, Jen-Teh Junior College of Medicine, Nursing and Management, Miaoli 356, Taiwan
| | - Frank Cheau-Feng Lin
- Department of Thoracic Surgery, Chung Shan Medical University Hospital, Taichung 402, Taiwan;
- School of Medicine, Chung Shan Medical University, Taichung 402, Taiwan
| | - Ruey-Hwang Chou
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung 406, Taiwan;
- Center for Molecular Medicine, China Medical University Hospital, Taichung 406, Taiwan
- Department of Medical Laboratory and Biotechnology, Asia University, Taichung 413, Taiwan
| | - Min-Chih Li
- Institute of Biomedical Sciences, Mackay Medical College, New Taipei City 252, Taiwan;
| | - Ching-Chang Cheng
- Laboratory Animal Service Center, Office of Research and Development, China Medical University, Taichung 406, Taiwan;
| | - Chien-Yu Kao
- Medical and Pharmaceutical Industry Technology and Development Center, New Taipei City 248, Taiwan;
| | - Chie-Pein Chen
- Department of Medical Research, Mackay Memorial Hospital, Taipei 104, Taiwan; (K.D.Y.); (C.-P.C.)
| | - Hung-Ching Lin
- Department of Audiology and Speech-Language Pathology, Mackay Medical College, New Taipei City 252, Taiwan;
| | - Yi-Chao Hsu
- Institute of Biomedical Sciences, Mackay Medical College, New Taipei City 252, Taiwan;
- Department of Audiology and Speech-Language Pathology, Mackay Medical College, New Taipei City 252, Taiwan;
- Correspondence: ; Tel.: +886-2-26360303 (ext. 1721)
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Zhu HY, Gao YJ, Wang Y, Liang C, Zhang ZX, Chen Y. LncRNA CRNDE promotes the progression and angiogenesis of pancreatic cancer via miR-451a/CDKN2D axis. Transl Oncol 2021; 14:101088. [PMID: 33882369 PMCID: PMC8081992 DOI: 10.1016/j.tranon.2021.101088] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 03/03/2021] [Accepted: 03/23/2021] [Indexed: 02/07/2023] Open
Abstract
CRNDE was up-regulated in pancreatic cancer. CRNDE promoted the progression and angiogenesis of pancreatic cancer. CRNDE functioned as a sponge for miR-451a in pancreatic cancer cells. MiR-451a directly interacted with CDKN2D and regulated CDKN2D expression. CRNDE regulated pancreatic cancer progression via miR-451a/CDKN2D axis.
Background The lncRNA colorectal neoplasia differentially expressed (lncRNA CRNDE) has been reported to play a pivotal role in various cancers. However, the expression and function of CRNDE in pancreatic cancer remain unclear. The objective of this study was to investigate the effects of CRNDE on pancreatic cancer and the underlying mechanisms. Methods The expression of CRNDE in pancreatic cancer tissues and cell lines was determined by RT-qPCR. Proliferation and angiogenesis were detected by MTT, colony formation, transwell and tube formation assays in vitro and in vivo. ELISA assay was used to detect the secretion of VEGFA. IHC was performed to test the expression levels of Ki67 and CD31. The binding sites between CRNDE, CDKN2D and miR-451a were predicted by bioinformatics analysis. Dual luciferase reporter and RNA immunoprecipitation assays were conducted to confirm the interaction with each other. Results The results showed that CRNDE was significantly up-regulated in pancreatic cancer tissues as well as cell lines. CRNDE overexpression promoted the progression and angiogenesis of pancreatic cancer cells in vitro and in vivo. Moreover, we identified that CRNDE functioned as a sponge for miR-451a and CRNDE overexpression inhibited the expression of miR-451a. Furthermore, we confirmed that miR-451a directly interacted with CDKN2D and negatively regulated CDKN2D expression. In addition, CRNDE was found to positively regulate CDKN2D expression and mediate pancreatic cancer cell proliferation and angiogenesis through miR-451a/CDKN2D axis. Conclusion CRNDE modulates cell proliferation and angiogenesis via miR-451a/CDKN2D axis in pancreatic cancer, which provides a potential therapeutic target for pancreatic cancer treatment.
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Affiliation(s)
- Hong-Yan Zhu
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China; Department of General Surgery, Pinghu Hospital, Health Science Center, Shenzhen University, Shenzhen, 518116, P. R. China; Department of General Surgery, Suqian First Hospital, Suqian 223800, Jiangsu Province, China
| | - Yu-Jie Gao
- Department of Hematology and Oncology, Shenzhen University General Hospital, Shenzhen 518055, Guangdong Province, China
| | - Yong Wang
- Department of General Surgery, Suqian First Hospital, Suqian 223800, Jiangsu Province, China
| | - Chi Liang
- Department of General Surgery, Suqian First Hospital, Suqian 223800, Jiangsu Province, China
| | - Zi-Xiang Zhang
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China.
| | - Yu Chen
- Department of General Surgery, Suqian First Hospital, Suqian 223800, Jiangsu Province, China.
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Joshi A, Azuma R, Akumuo R, Goetzl L, Pinney SE. Gestational diabetes and maternal obesity are associated with sex-specific changes in miRNA and target gene expression in the fetus. Int J Obes (Lond) 2019; 44:1497-1507. [PMID: 31852997 PMCID: PMC7299738 DOI: 10.1038/s41366-019-0485-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Revised: 10/14/2019] [Accepted: 10/31/2019] [Indexed: 12/11/2022]
Abstract
Background/Objective Pregnancies complicated by gestational diabetes (GDM) or maternal
obesity have been linked to the development of diabetes, obesity and fatty
liver disease later in life with sex-specific manifestations. Alterations in
miRNA expression in offspring exposed to GDM and maternal obesity and
effects on hepatic development are unknown. Here we describe how exposure to
maternal obesity in utero leads to sex-specific changes in
miRNA and target gene expression in human fetal liver. Methods Candidate miRNA expression was measured in 2nd trimester
amniotic fluid (AF) from women with GDM. Targets of differentially expressed
miRNAs were determined and pathway enrichment of target genes was performed.
MiRNA and target gene expression were measured in a separate cohort of
2nd trimester primary human fetal hepatocytes (PHFH) exposed
to maternal obesity via QPCR and western blot. All studies were IRB
approved. Results GDM exposed AF had significant increases in miRNAs 199a-3p, 503-5p,
and 1268a (fold change (FC) ≥1.5, p<0.05). Female offspring
specific analysis showed enrichment in miRNAs 378a-3p, 885-5p, and 7-1-3p
(p<0.05). MiRNA gene targets were enriched in hepatic pathways. Key
genes regulating de novo lipogenesis were upregulated in
obesity exposed PHFH, especially in males. Significantly altered miRNAs in
GDM AF were measured in obese exposed PHFH, with consistent increases in
miRNAs 885-5p, 199-3p, 503-5p, 1268a and 7-1-3p (FC ≥1.5,
p<0.05). Female PHFH exposed to maternal obesity had increased
expression of miR-885-5p, miR-199-3p, miR-503-5p, miR-1268s and miR-7-1-3p,
(p<0.05), corresponding to decreased target genes expression for
ABCA1, PAK4 and INSR.
In male PHFHs, no miRNA changes were measured but there was increased
expression of ABCA1, PAK4, and
INSR (p<0.05). Conclusion Our data suggest sex-specific changes in miRNA and gene expression in
PHFH may be one mechanism contributing to the sexual dimorphism of metabolic
disease in offspring exposed to GDM and maternal obesity in
utero.
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Affiliation(s)
- Apoorva Joshi
- Division of Endocrinology and Diabetes, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Rikka Azuma
- Division of Endocrinology and Diabetes, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Rita Akumuo
- Division of Endocrinology and Diabetes, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Laura Goetzl
- Department of Obstetrics, Gynecology and Reproductive Sciences, McGovern School of Medicine, University of Texas, Health Sciences Center at Houston, Houston, TX, USA
| | - Sara E Pinney
- Division of Endocrinology and Diabetes, Children's Hospital of Philadelphia, Philadelphia, PA, USA. .,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA. .,Center for Research in Reproduction and Women's Health, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA. .,Center of Excellence in Environmental Toxicology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA.
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Rodrigues M, Blattner C, Stuppia L. Amniotic Fluid Cells, Stem Cells, and p53: Can We Stereotype p53 Functions? Int J Mol Sci 2019; 20:E2236. [PMID: 31067653 DOI: 10.3390/ijms20092236] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 04/20/2019] [Accepted: 04/30/2019] [Indexed: 12/30/2022] Open
Abstract
In recent years, great interest has been devoted to finding alternative sources for human stem cells which can be easily isolated, ideally without raising ethical objections. These stem cells should furthermore have a high proliferation rate and the ability to differentiate into all three germ layers. Amniotic fluid, ordinarily discarded as medical waste, is potentially such a novel source of stem cells, and these amniotic fluid derived stem cells are currently gaining a lot of attention. However, further information will be required about the properties of these cells before they can be used for therapeutic purposes. For example, the risk of tumor formation after cell transplantation needs to be explored. The tumor suppressor protein p53, well known for its activity in controlling Cell Prolif.eration and cell death in differentiated cells, has more recently been found to be also active in amniotic fluid stem cells. In this review, we summarize the major findings about human amniotic fluid stem cells since their discovery, followed by a brief overview of the important role played by p53 in embryonic and adult stem cells. In addition, we explore what is known about p53 in amniotic fluid stem cells to date, and emphasize the need to investigate its role, particularly in the context of cell tumorigenicity.
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Di Tizio D, Di Serafino A, Upadhyaya P, Sorino L, Stuppia L, Antonucci I. The Impact of Epigenetic Signatures on Amniotic Fluid Stem Cell Fate. Stem Cells Int 2018; 2018:4274518. [PMID: 30627172 DOI: 10.1155/2018/4274518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 10/04/2018] [Indexed: 02/07/2023] Open
Abstract
Epigenetic modifications play a significant role in determining the fate of stem cells and in directing the differentiation into multiple lineages. Current evidence indicates that mechanisms involved in chromatin regulation are essential for maintaining stable cell identities. There is a tight correlation among DNA methylation, histone modifications, and small noncoding RNAs during the epigenetic control of stem cells' differentiation; however, to date, the precise mechanism is still not clear. In this context, amniotic fluid stem cells (AFSCs) represent an interesting model due to their unique features and the possible advantages of their use in regenerative medicine. Recent studies have elucidated epigenetic profiles involved in AFSCs' lineage commitment and differentiation. In order to use these cells effectively for therapeutic purposes, it is necessary to understand the basis of multiple-lineage potential and elaborate in detail how cell fate decisions are made and memorized. The present review summarizes the most recent findings on epigenetic mechanisms of AFSCs with a focus on DNA methylation, histone modifications, and microRNAs (miRNAs) and addresses how their unique signatures contribute to lineage-specific differentiation.
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Abstract
Despite increasing interest in human amniotic fluid cells, very little is known about the regulation and function of p53 in this cell type. In this study, we show that undifferentiated human amniotic fluid cells express p53, yet at lower levels than in cancer cells. The p53 protein in amniotic fluid cells is mainly localized in the nuclei, however, its antiproliferative activity is compromised in these cells. Igf2, a maternal imprinted gene, and c-jun, a proto-oncogene, are regulated by p53 in these cells. DNA damage leads to an increase in p53 abundance in human amniotic fluid cells and to transcriptional activation of its target genes. Interestingly, cell differentiation toward the neural lineage leads to p53 induction as differentiation progresses.
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Affiliation(s)
- Melissa Rodrigues
- Laboratory of Molecular Genetics, Department of Psychological, Health and Territorial Sciences, School of Medicine and Health Sciences, G. d' Annunzio University, Chieti-Pescara, Italy
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Ivana Antonucci
- Laboratory of Molecular Genetics, Department of Psychological, Health and Territorial Sciences, School of Medicine and Health Sciences, G. d' Annunzio University, Chieti-Pescara, Italy
- Centre of Aging Science and Translational Medicine (Ce.S.I.-Me.T.), G. d'Annunzio University, Chieti-Pescara, Italy
| | - Seham Elabd
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Karlsruhe, Germany
- Department of Human Physiology, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Shilpa Kancherla
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Marco Marchisio
- Centre of Aging Science and Translational Medicine (Ce.S.I.-Me.T.), G. d'Annunzio University, Chieti-Pescara, Italy
- Department of Medicine and Aging Sciences, School of Medicine and Health Sciences, G. d' Annunzio University, Chieti-Pescara, Italy
| | - Christine Blattner
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Liborio Stuppia
- Laboratory of Molecular Genetics, Department of Psychological, Health and Territorial Sciences, School of Medicine and Health Sciences, G. d' Annunzio University, Chieti-Pescara, Italy
- Centre of Aging Science and Translational Medicine (Ce.S.I.-Me.T.), G. d'Annunzio University, Chieti-Pescara, Italy
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Zou G, Li Y, Jin Y, Zhu X, Yang J, Wang S, You Q, Xiong H, Liu Y. [ In vitrodifferentiation of human amniotic mesenchymal stem cells into ligament fibroblasts after induced by transforming growth factor β 1 and vascular endothelial growth factor]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2017; 31:582-593. [PMID: 29798549 DOI: 10.7507/1002-1892.201612090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Objective To investigate whether human amniotic mesenchymal stem cells (hAMSCs) have the characteristics of mesenchymal stem cells (MSCs) and the differentiation capacity into ligament fibroblasts in vitro. Methods The hAMSCs were separated through trypsin and collagenase digestion from placenta, the phenotypic characteristics of hAMSCs were detected by flow cytometry, the cytokeratin-19 (CK-19) and vimentin expression of hAMSCs were tested through immunofluorescence staining. The hAMSCs at the 3rd passage were cultured with L-DMEM/F12 medium containing transforming growth factor β 1 (TGF-β 1) and vascular endothelial growth factor (VEGF) as the experimental group and with single L-DMEM/F12 medium as the control group. The morphology of hAMSCs was observed by inverted phase contrast microscope; the cellular activities and ability of proliferation were examined by cell counting kit-8 (CCK-8) method; the ligament fibroblasts related protein expressions including collagen type I, collagen type III, Fibronectin, and Tenascin-C were detected by immunofluorescence staining; specific mRNA expressions of ligament fibroblasts and angiogenesis including collagen type I, collagen type III, Fibronectin, α-smooth muscle actin (α-SMA), and VEGF were measured by real-time fluorescence quantitative PCR. Results The hAMSCs presented monolayer and adherent growth under inverted phase contrast microscope; the flow cytometry results demonstrated that hAMSCs expressed the MSCs phenotypes; the immunofluorescence staining results indicated the hAMSCs had high expression of the vimentin and low expression of CK-19; the hAMSCs possessed the differentiation ability into the osteoblasts, chondroblasts, and lipoblasts. The CCK-8 results displayed that cells reached the peak of growth curve at 7 days in each group, and the proliferation ability in the experimental group was significantly higher than that in the control group at 7 days ( P<0.05). The immunofluorescence staining results showed that the expressions of collagen type I, collagen type III, Fibronectin, and Tenascin-C in the experimental group were significantly higher than those in the control group at 5, 10, and15 days after culture ( P<0.05). The real-time fluorescence quantitative PCR results revealed that the mRNA relative expressions had an increasing tendency at varying degrees with time in the experimental group ( P<0.05). The relative mRNA expressions of collagen type I, collagen type III, Fibronectin, α-SMA, and VEGF in the experimental group were significantly higher than those in the control group at the other time points ( P<0.05), but no significant difference was found in the relative mRNA expressions of collagen type I, collagen type III, and VEGF between 2 groups at 5 days ( P>0.05). Conclusion The hAMSCs possesses the characteristics of MSCs and good proliferation ability which could be chosen as seed cell source in tissue engineering. The expressions of ligament fibroblasts and angiogenesis related genes could be up-regulated, after induction in vitro, and the synthesis of ligament fibroblasts related proteins could be strengthened. In addition, the application of TGF-β 1 and VEGF could be used as growth factors sources in constructing tissue engineered ligament.
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Affiliation(s)
- Gang Zou
- The First Department of Orthopaedics, the Affiliated Hospital of Zunyi Medical College, Zunyi Guizhou, 563000, P.R.China
| | | | - Ying Jin
- The First Department of Orthopaedics, the Affiliated Hospital of Zunyi Medical College, Zunyi Guizhou, 563000, P.R.China
| | - Xizhong Zhu
- The First Department of Orthopaedics, the Affiliated Hospital of Zunyi Medical College, Zunyi Guizhou, 563000, P.R.China
| | - Jibin Yang
- The First Department of Orthopaedics, the Affiliated Hospital of Zunyi Medical College, Zunyi Guizhou, 563000, P.R.China
| | - Shengmin Wang
- The First Department of Orthopaedics, the Affiliated Hospital of Zunyi Medical College, Zunyi Guizhou, 563000, P.R.China
| | - Qi You
- The First Department of Orthopaedics, the Affiliated Hospital of Zunyi Medical College, Zunyi Guizhou, 563000, P.R.China
| | - Huazhang Xiong
- The First Department of Orthopaedics, the Affiliated Hospital of Zunyi Medical College, Zunyi Guizhou, 563000, P.R.China
| | - Yi Liu
- The First Department of Orthopaedics, the Affiliated Hospital of Zunyi Medical College, Zunyi Guizhou, 563000,
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