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Tivig I, Vallet L, Moisescu MG, Fernandes R, Andre FM, Mir LM, Savopol T. Early differentiation of mesenchymal stem cells is reflected in their dielectrophoretic behavior. Sci Rep 2024; 14:4330. [PMID: 38383752 PMCID: PMC10881469 DOI: 10.1038/s41598-024-54350-z] [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: 12/13/2023] [Accepted: 02/12/2024] [Indexed: 02/23/2024] Open
Abstract
The therapeutic use of mesenchymal stem cells (MSCs) becomes more and more important due to their potential for cell replacement procedures as well as due to their immunomodulatory properties. However, protocols for MSCs differentiation can be lengthy and may result in incomplete or asynchronous differentiation. To ensure homogeneous populations for therapeutic purposes, it is crucial to develop protocols for separation of the different cell types after differentiation. In this article we show that, when MSCs start to differentiate towards adipogenic or osteogenic progenies, their dielectrophoretic behavior changes. The values of cell electric parameters which can be obtained by dielectrophoretic measurements (membrane permittivity, conductivity, and cytoplasm conductivity) change before the morphological features of differentiation become microscopically visible. We further demonstrate, by simulation, that these electric modifications make possible to separate cells in their early stages of differentiation by using the dielectrophoretic separation technique. A label free method which allows obtaining cultures of homogenously differentiated cells is thus offered.
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Grants
- PN-III-P2-2.1-PED-2021, grant no. 596PED/2022 Romanian Executive Agency for Higher Education, Research, Development, and Innovation Funding
- PN-III-P2-2.1-PED-2021, grant no. 596PED/2022 Romanian Executive Agency for Higher Education, Research, Development, and Innovation Funding
- PN-III-P2-2.1-PED-2021, grant no. 596PED/2022 Romanian Executive Agency for Higher Education, Research, Development, and Innovation Funding
- PN-III-P3-3.1-PM-RO-FR-2019, grant no. 11BM/2019 Romania-France cooperation program Hubert Curien-Brancusi
- PN-III-P3-3.1-PM-RO-FR-2019, grant no. 11BM/2019 Romania-France cooperation program Hubert Curien-Brancusi
- PN-III-P3-3.1-PM-RO-FR-2019, grant no. 11BM/2019 Romania-France cooperation program Hubert Curien-Brancusi
- PN-III-P3-3.1-PM-RO-FR-2019, grant no. 11BM/2019 Romania-France cooperation program Hubert Curien-Brancusi
- FET-OPEN H2020, grant no. 964562 Horizon 2020
- FET-OPEN H2020, grant no. 964562 Horizon 2020
- FET-OPEN H2020, grant no. 964562 Horizon 2020
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Affiliation(s)
- Ioan Tivig
- Biophysics and Cellular Biotechnology Department, Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 8 Eroii Sanitari Blvd., 050474, Bucharest, Romania
- Excellence Center for Research in Biophysics and Cellular Biotechnology, Carol Davila University of Medicine and Pharmacy, 050474, Bucharest, Romania
| | - Leslie Vallet
- METSY UMR 9018, Université Paris-Saclay, CNRS and Gustave Roussy, 94805, Villejuif, France
| | - Mihaela G Moisescu
- Biophysics and Cellular Biotechnology Department, Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 8 Eroii Sanitari Blvd., 050474, Bucharest, Romania.
- Excellence Center for Research in Biophysics and Cellular Biotechnology, Carol Davila University of Medicine and Pharmacy, 050474, Bucharest, Romania.
| | - Romain Fernandes
- METSY UMR 9018, Université Paris-Saclay, CNRS and Gustave Roussy, 94805, Villejuif, France
| | - Franck M Andre
- METSY UMR 9018, Université Paris-Saclay, CNRS and Gustave Roussy, 94805, Villejuif, France
| | - Lluis M Mir
- METSY UMR 9018, Université Paris-Saclay, CNRS and Gustave Roussy, 94805, Villejuif, France
| | - Tudor Savopol
- Biophysics and Cellular Biotechnology Department, Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 8 Eroii Sanitari Blvd., 050474, Bucharest, Romania
- Excellence Center for Research in Biophysics and Cellular Biotechnology, Carol Davila University of Medicine and Pharmacy, 050474, Bucharest, Romania
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2
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Liu J, Gan L, Ma B, He S, Wu P, Li H, Xiong J. Alterations in chromatin accessibility during osteoblast and adipocyte differentiation in human mesenchymal stem cells. BMC Med Genomics 2022; 15:17. [PMID: 35101056 PMCID: PMC8802426 DOI: 10.1186/s12920-022-01168-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 11/06/2021] [Accepted: 01/27/2022] [Indexed: 02/06/2023] Open
Abstract
Although differential expression of genes is apparent during the adipogenic/osteogenic differentiation of marrow mesenchymal stem cells (MSCs), it is not known whether this is associated with changes in chromosomal structure. In this study, we used ATAC-sequencing technology to observe variations in chromatin assembly during the early stages of MSC differentiation. This showed significant changes in the number and distribution of chromosome accessibility at different time points of adipogenic/osteogenic differentiation. Sequencing of differential peaks indicated alterations in transcription factor motifs involved in MSC differentiation. Gene Ontology (GO) and pathway analysis indicated that changes in biological function resulted from the alterations in chromatin accessibility. We then integrated ATAC-seq and RNA-seq and found that only a small proportion of the overlapping genes were screened out from ATAC-seq and RNA-seq overlapping. Through GO and pathway analysis of these overlapped genes, we not only observed some known biological functions related to adipogenic/osteogenic differentiation but also noticed some unusual biological clustering during MSC differentiation. In summary, our work not only presents the landscape of chromatin accessibility of MSC during differentiation but also helps to further our understanding of the underlying mechanisms of gene expression in these processes.
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Affiliation(s)
- Jianyun Liu
- Jiangxi Provincial Key Laboratory of Systems Biomedicine, Jiujiang University, Jiujiang, 332000, China
| | - Lijun Gan
- Jiangxi Provincial Key Laboratory of Systems Biomedicine, Jiujiang University, Jiujiang, 332000, China
| | - Baichen Ma
- Jiangxi Provincial Key Laboratory of Systems Biomedicine, Jiujiang University, Jiujiang, 332000, China
| | - Shan He
- Jiangxi Provincial Key Laboratory of Systems Biomedicine, Jiujiang University, Jiujiang, 332000, China
| | - Ping Wu
- Jiangxi Provincial Key Laboratory of Systems Biomedicine, Jiujiang University, Jiujiang, 332000, China
| | - Huiming Li
- Jiangxi Provincial Key Laboratory of Systems Biomedicine, Jiujiang University, Jiujiang, 332000, China
| | - Jianjun Xiong
- Jiangxi Provincial Key Laboratory of Systems Biomedicine, Jiujiang University, Jiujiang, 332000, China.
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Gupta R, Rao R, Johnston TR, Uong J, Yang DS, Lee TQ. Muscle stem cells and rotator cuff injury. JSES Rev Rep Tech 2021; 1:186-193. [PMID: 37588948 PMCID: PMC10426486 DOI: 10.1016/j.xrrt.2021.05.001] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 08/18/2023]
Abstract
The incidence of reinjury after treatment of rotator cuff tears (RCTs) remains very high despite the variety of nonoperative treatments and the high volume of surgical interventions performed. Muscle stem cells (MuSCs), also known as satellite cells, have risen to the forefront of rotator cuff tear research as a potential adjuvant therapy to aid unsatisfactory surgical outcomes. MuSCs are adult stem cells exhibiting the capacity to proliferate and self-renew, both symmetrically and asymmetrically. As part of this niche, they have been shown to adopt an activated phenotype in response to musculoskeletal injury and decrease their cellular populations during aging, implicating them as key players in both pathologic and normal physiological processes. While commonly connected to the regenerative phase of muscle healing, MuSCs also have the potential to differentiate into adverse morphologies. For instance, if MuSCs differentiate into adipocytes, the ensuing fatty infiltration serves as an obstacle to proper muscle healing and has been associated with the failure of surgical management of RCTs. With the potential to both harm and heal, we have identified MuSCs as a key player in RCT repair. To better understand this dichotomy, the following review will identify key studies regarding the morphology, function, and behavior of MuSCs with respect to RCTs and healing.
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Affiliation(s)
- Ranjan Gupta
- Department of Orthopaedics, University of California, Irvine, CA, USA
| | - Rohan Rao
- Department of Orthopaedics, University of California, Irvine, CA, USA
| | - Tyler R. Johnston
- Department of Orthopaedics, University of California, Irvine, CA, USA
| | - Jennifer Uong
- Department of Orthopaedics, University of California, Irvine, CA, USA
| | - Daniel S. Yang
- Department of Orthopaedics, University of California, Irvine, CA, USA
| | - Thay Q. Lee
- Congress Medical Foundation, Pasadena, CA, USA
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Ahn JS, Chung KY, Jang SS, Kim UH, Hwang SM, Jin S, Park BH, Kang DH, Kwon EG. mRNA expression of myogenic- adipogenic makers and adipocyte in skeletal muscle of Hanwoo calves at newborn and 6 months of age. J Anim Sci Technol 2021; 62:893-902. [PMID: 33987569 PMCID: PMC7721583 DOI: 10.5187/jast.2020.62.6.893] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/14/2020] [Accepted: 08/18/2020] [Indexed: 11/20/2022]
Abstract
This study was conducted to compare the mRNA expression levels of
myogenic-adipogenic makers in the skeletal muscle and adipocytes formation, body
weight, rumen weight, and papilla length on Hanwoo calves at newborn and 6
months of age. Animals used three newborn Hanwoo calves (NC) and three Hanwoo
calves 6 months of age (SC). Body weight and rumen weight were significantly
increased in SC compared to NC (p < 0.01), and papilla
length was longer about 10-fold in SC than NC. Adipocytes was possible to
visually identify more adipocytes in SC compared to NC, and were mainly formed
around the blood vessels. mRNA expression of myogenin, myosin heavy chain 1 and
myosin heavy chain 2A in both longissimus dorsi (LD) and
semimembranosus (SM) was found to increase with calves
growth (p < 0.01), and it was confirmed that have higher
levels of mRNA expression in SM than LD. In LD tissues, the mRNA expression of
stearoyl-CoA desaturase (SCD, p < 0.03) and peroxisome
proliferator activated receptor γ (PPARγ, p <
0.04) was significantly higher in SC than NC. In SM tissues, mRNA expression
levels of SCD (p < 0.02) and CCAAT/enhancer binding protein
β (C/EBPβ, p < 0.01) were higher in SC than
NC, and also mRNA expression levels of PPARγ increased, but there was no
significant difference. Thus, the calves period suggests that it is an important
step in the development of the rumen and the myogenesis and adipogenesis.
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Affiliation(s)
- Jun-Sang Ahn
- Hanwoo Research Institute, National Institute of Animal Science, RDA, Pyeongchang 25340, Korea
| | - Ki-Yong Chung
- Department of Beef Science, Korea National College of Agriculture and Fisheries, Jeonju 54874, Korea
| | - Sun-Sick Jang
- Hanwoo Research Institute, National Institute of Animal Science, RDA, Pyeongchang 25340, Korea
| | - Ui-Hyung Kim
- Hanwoo Research Institute, National Institute of Animal Science, RDA, Pyeongchang 25340, Korea
| | - So-Mi Hwang
- Hanwoo Research Institute, National Institute of Animal Science, RDA, Pyeongchang 25340, Korea
| | - Shil Jin
- Hanwoo Research Institute, National Institute of Animal Science, RDA, Pyeongchang 25340, Korea
| | - Bo-Hye Park
- Hanwoo Research Institute, National Institute of Animal Science, RDA, Pyeongchang 25340, Korea
| | - Dong-Hun Kang
- Department of Beef Science, Korea National College of Agriculture and Fisheries, Jeonju 54874, Korea
| | - Eung-Gi Kwon
- Hanwoo Research Institute, National Institute of Animal Science, RDA, Pyeongchang 25340, Korea
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Silva CGD, Barretto LSDS, Lo Turco EG, Santos ADL, Lessio C, Martins Júnior HA, Almeida FGD. Lipidomics of mesenchymal stem cell differentiation. Chem Phys Lipids 2020; 232:104964. [PMID: 32882223 DOI: 10.1016/j.chemphyslip.2020.104964] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/31/2020] [Accepted: 08/23/2020] [Indexed: 01/10/2023]
Abstract
Mesenchymal stem cells (MSCs), such as adipose-derived stem cells (ADSCs) and skeletal muscle-derived stem cells (MDSCs), are potential sources for cell-based therapeutic strategies. However, there is little knowledge about the lipid composition of these stem cells and the mechanisms of their differentiation. Lipids have important biological and physiological functions that are critical for understanding the regulation and control of stem cell fate. This study sought to analyze the lipidome of rabbit ADSCs and MDSCs and their adipogenic and osteogenic differentiation. The MSCs were isolated and were characterized by flow cytometry. Lipids were extracted from both MSCs and differentiated cells, and the lipids were subsequently analyzed with a hybrid triple quadrupole time-of-flight mass spectrometer. The results showed a total of 1687 lipid species. MSCs exhibited different lipid profiles as well as changes in lipid composition after differentiation. Furthermore, the expression levels of N-acyl-phosphatidylethanolamine (NAPE) 54:7+NH4 (-FA 17:0(NH4)) and phosphatidylcholine (PC) 42:6+Na were higher in the adipogenic lineages in of both MSC types, and NAPE 58:2+NH4 (-FA 17:0 (NH4)) and NAPE 56:2+NH4 (-FA 17:0 (NH4)) had higher levels in the osteogenic lineages, suggesting lipid similarities in cells differentiated from different stem cell sources.
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Affiliation(s)
- Camila Gonzaga da Silva
- Department of Surgery, Division of Urology, Federal University of São Paulo, Rua Embaú 231- Vila Clementino, São Paulo, SP, 04039-060, Brazil
| | - Letícia Siqueira de Sá Barretto
- Department of Surgery, Division of Urology, Federal University of São Paulo, Rua Embaú 231- Vila Clementino, São Paulo, SP, 04039-060, Brazil.
| | - Edson Guimarães Lo Turco
- Department of Surgery, Division of Urology, Federal University of São Paulo, Rua Embaú 231- Vila Clementino, São Paulo, SP, 04039-060, Brazil
| | - Alex de Lima Santos
- Department of Surgery, Division of Urology, Federal University of São Paulo, Rua Embaú 231- Vila Clementino, São Paulo, SP, 04039-060, Brazil
| | - Camila Lessio
- Department of Surgery, Division of Urology, Federal University of São Paulo, Rua Embaú 231- Vila Clementino, São Paulo, SP, 04039-060, Brazil
| | | | - Fernando Gonçalves de Almeida
- Department of Surgery, Division of Urology, Federal University of São Paulo, Rua Embaú 231- Vila Clementino, São Paulo, SP, 04039-060, Brazil
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6
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Liu SY, He YB, Deng SY, Zhu WT, Xu SY, Ni GX. Exercise affects biological characteristics of mesenchymal stromal cells derived from bone marrow and adipose tissue. Int Orthop 2017; 41:1199-1209. [PMID: 28364139 DOI: 10.1007/s00264-017-3441-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 03/09/2017] [Indexed: 02/05/2023]
Abstract
Both bone marrow mesenchymal stromal cells (BMSCs) and adipose-derived mesenchymal stromal cells (ADSCs) are good sources for tissue engineering. To maximize therapeutic efficacy of MSCs, an appropriate source of MSCs should be selected according to their own inherent characteristics for future clinical application. Hence, this study was conducted to compare proliferative, differential and antiapoptosis abilities of both MSCs derived from exercised and sedentary rats under normal and hypoxia/serum deprivation conditions (H/SD). Our results showed that exercise may enhance proliferative ability and decrease adipogenic ability of BMSCs and ADSCs. However, positive effect of exercise on osteogenesis was only observed for BMSCs in either environment. Little effect was observed on the antiapoptotic ability of both MSC types. It was also suggested that biological characteristics of both types were partly changed. It is therefore believed that BMSCs derived from exercised rat on early passage may be a good cell source for bone tissue engineering.
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Affiliation(s)
- Sheng-Yao Liu
- Department of Orthopeadics and Traumatology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue (N), Guangzhou, 510515, China
| | - Yong-Bin He
- Department of Orthopeadics and Traumatology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue (N), Guangzhou, 510515, China
| | - Song-Yun Deng
- Department of Orthopeadics and Traumatology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue (N), Guangzhou, 510515, China
| | - Wen-Ting Zhu
- Biomaterial Research Center, School of pharmaceutical sciences, Southern Medical University, 1838 Guangzhou Avenue (N), Guangzhou, 510515, China
| | - Shao-Yong Xu
- Department of Orthopeadics and Traumatology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue (N), Guangzhou, 510515, China
| | - Guo-Xin Ni
- Department of Orthopeadics and Traumatology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue (N), Guangzhou, 510515, China.
- Department of Rehabilitation Medicine, First Affiliated Hospital, Fujian Medical University, 20 Chazhong Road, Fuzhou, 350005, China.
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7
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Ikbale EA, Goorha S, Reiter LT, Miranda-Carboni GA. Effects of hTERT immortalization on osteogenic and adipogenic differentiation of dental pulp stem cells. Data Brief 2016; 6:696-9. [PMID: 26958627 PMCID: PMC4773409 DOI: 10.1016/j.dib.2016.01.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [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: 11/18/2015] [Revised: 12/28/2015] [Accepted: 01/07/2016] [Indexed: 11/17/2022] Open
Abstract
These data relate to the differentiation of human dental pulp stem cells (DPSC) and DPSC immortalized by constitutively expressing human telomerase reverse transcriptase (hTERT) through both osteogenic and adipogenic lineages (i.e. to make bone producing and fat producing cells from these dental pulp stem cells). The data augment another study to characterize immortalized DPSC for the study of neurogenetic “Characterization of neurons from immortalized dental pulp stem cells for the study of neurogenetic disorders” [1]. Two copies of one typical control cell line (technical replicates) were used in this study. The data represent the differentiation of primary DPSC into osteoblast cells approximately 60% more effectively than hTERT immortalized DPSC. Conversely, both primary and immortalized DPSC are poorly differentiated into adipocytes. The mRNA expression levels for both early and late adipogenic and osteogenic gene markers are shown.
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Affiliation(s)
- El-Ayachi Ikbale
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Sarita Goorha
- Department of Neurology, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Lawrence T Reiter
- Department of Neurology, University of Tennessee Health Science Center, Memphis, TN 38163, USA; Department Anatomy and Neurobiology, University of Tennessee Health Science Center, Memphis, TN 38163, USA; Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN 38163, USA
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Ardeshirylajimi A, Rafeie F, Zandi-Karimi A, Jaffarabadi GA, Mohammadi-Sangcheshmeh A, Samiei R, Toghdory A, Seyedjafari E, Hashemi SM, Cinar MU, Gastal EL. Fat harvesting site is an important determinant of proliferation and pluripotency of adipose-derived stem cells. Biologicals 2015; 44:12-8. [PMID: 26673522 DOI: 10.1016/j.biologicals.2015.11.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Revised: 11/03/2015] [Accepted: 11/06/2015] [Indexed: 01/25/2023] Open
Abstract
To define the optimal fat harvest site and detect any potential differences in adipose-derived stem cells (ASCs) proliferation properties in camels, aspirates from the abdomen and hump sites were compared. Obtained results revealed that ASCs from both abdomen and hump exhibited spindle-shaped and fibroblast-like morphology with hump-derived ASCs being smaller in size and narrower in overall appearance than abdominal ASCs. Abdominal ASCs required a greater time for proliferation than the hump-derived cells. These results were further confirmed with a tetrazolium-based colorimetric assay (MTT) which showed a greater cell proliferation rate for hump ASCs than for the abdomen. Under inductive conditions, ASCs from both abdominal and hump fat deposits maintained their lineage differentiation potential into adipogenic, chondrogenic, and osteogenic lineages during subsequent passages without any qualitative difference. However, expression of alkaline phosphatase was higher in osteogenic differentiated cells from the hump compared with those of the abdomen. Moreover, the increase in calcium content in hump-derived stem cells was higher than that in abdominal-derived stem cells. In conclusion, our findings revealed that ASCs can be obtained from different anatomical locations, although ASCs from the hump fat region may be the ideal stem cell sources for use in cell-based therapies.
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Affiliation(s)
| | - Farjad Rafeie
- Department of Agricultural Biotechnology, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran
| | | | | | | | - Rahmat Samiei
- Jahad-Agriculture Organization of Golestan Province, Gorgan, Iran
| | - Abdolhakim Toghdory
- Department of Animal Science, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran
| | - Ehsan Seyedjafari
- Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran
| | - Seyed Mahmoud Hashemi
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mehmet Ulas Cinar
- Department of Animal Science, Faculty of Agriculture, Erciyes University, Kayseri, Turkey
| | - Eduardo L Gastal
- Department of Animal Science, Food and Nutrition, Southern Illinois University, Carbondale, IL, USA
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Abstract
Cell line passage number is an important consideration when designing an experiment. At higher passages, it is generally understood that cell health begins to decline and, when this occurs, the result can be variable data. However, there are no specific guidelines regarding optimal passage range, and this information is dependent on cell type. To explore these variabilities, low passage D1 cells were thawed (passage 3) and passaged serially until a much higher number (passage 34). Samples were taken every five passages and analyzed for alkaline phosphatase and triglyceride; also, the gene expression of both adipogenic and osteogenic markers was tested. The results indicate that the growth rate of these cells did slow down after passage 30. However, expression of the osteogenic characteristics seemed to cycle, with the highest levels seen at passage 4 and 24. The adipocyte expression levels remained the same throughout the study.
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Affiliation(s)
- K Kwist
- Institute for Biological Interfaces of Engineering, Clemson University, Clemson, SC, USA
| | - W C Bridges
- Department of Mathematical Sciences, Clemson University, Clemson, SC, USA
| | - K J L Burg
- Institute for Biological Interfaces of Engineering and Department of Bioengineering, Clemson University, Clemson, SC, USA. .,Department of Chemical Engineering, Kansas State University, Manhattan, KS, USA.
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10
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Dong R, Yao R, Du J, Wang S, Fan Z. Depletion of histone demethylase KDM2A enhanced the adipogenic and chondrogenic differentiation potentials of stem cells from apical papilla. Exp Cell Res 2013; 319:2874-82. [PMID: 23872478 DOI: 10.1016/j.yexcr.2013.07.008] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 07/03/2013] [Accepted: 07/11/2013] [Indexed: 12/22/2022]
Abstract
Mesenchymal stem cells (MSCs) are a reliable resource for tissue regeneration, but the molecular mechanism underlying directed differentiation remains unclear; this has restricted potential MSC applications. The histone demethylase, lysine (K)-specific demethylase 2A (KDM2A), is evolutionarily conserved and ubiquitously expressed members of the JmjC-domain-containing histone demethylase family. A previous study determined that KDM2A can regulate the cell proliferation and osteo/dentinogenic differentiation of MSCs. It is not known whether KDM2A is involved in the other cell lineages differentiation of MSCs. Here, we show that depletion of KDM2A by short hairpin RNAs can enhance adipogenic and chondrogenic differentiation potentials in human stem cells from apical papilla (SCAPs). We found that the stemness-related genes, SOX2, and the embryonic stem cell master transcription factor, NANOG were significantly increased after silence of KDM2A in SCAPs. Moreover, we found that knock-down of the KDM2A co-factor, BCOR also up-regulated the mRNA levels of SOX2 and NANOG. Furthermore, Chromatin immunoprecipitation assays demonstrate that silence of KDM2A increased the histone H3 Lysine 4 (H3K4) trimethylation in the SOX2 and NANOG locus and regulates its expression. In conclusion, our results suggested that depletion of KDM2A enhanced the adipogenic and chondrogenic differentiation potentials of SCAPs by up-regulated SOX2 and NANOG, BCOR also involved in this regulation as co-factor, and provided useful information to understand the molecular mechanism underlying directed differentiation in MSCs.
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Affiliation(s)
- Rui Dong
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing 100050, China
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