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Zhang L, Ma XJN, Fei YY, Han HT, Xu J, Cheng L, Li X. Stem cell therapy in liver regeneration: Focus on mesenchymal stem cells and induced pluripotent stem cells. Pharmacol Ther 2021; 232:108004. [PMID: 34597754 DOI: 10.1016/j.pharmthera.2021.108004] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/11/2021] [Accepted: 09/23/2021] [Indexed: 02/07/2023]
Abstract
The liver has the ability to repair itself after injury; however, a variety of pathological changes in the liver can affect its ability to regenerate, and this could lead to liver failure. Mesenchymal stem cells (MSCs) are considered a good source of cells for regenerative medicine, as they regulate liver regeneration through different mechanisms, and their efficacy has been demonstrated by many animal experiments and clinical studies. Induced pluripotent stem cells, another good source of MSCs, have also made great progress in the establishment of organoids, such as liver disease models, and in drug screening. Owing to the recent developments in MSCs and induced pluripotent stem cells, combined with emerging technologies including graphene, nano-biomaterials, and gene editing, precision medicine and individualized clinical treatment may be realized in the near future.
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Affiliation(s)
- Lu Zhang
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, PR China; Key Laboratory Biotherapy and Regenerative Medicine of Gansu Province, Lanzhou 730000, PR China; The First School of Clinical Medicine, Lanzhou University, Lanzhou 730000, PR China
| | - Xiao-Jing-Nan Ma
- The First School of Clinical Medicine, Lanzhou University, Lanzhou 730000, PR China
| | - Yuan-Yuan Fei
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, PR China; Key Laboratory Biotherapy and Regenerative Medicine of Gansu Province, Lanzhou 730000, PR China
| | - Heng-Tong Han
- The First School of Clinical Medicine, Lanzhou University, Lanzhou 730000, PR China
| | - Jun Xu
- The First School of Clinical Medicine, Lanzhou University, Lanzhou 730000, PR China
| | - Lu Cheng
- Key Laboratory Biotherapy and Regenerative Medicine of Gansu Province, Lanzhou 730000, PR China
| | - Xun Li
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, PR China; Key Laboratory Biotherapy and Regenerative Medicine of Gansu Province, Lanzhou 730000, PR China; Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, Lanzhou 730000, PR China; Hepatopancreatobiliary Surgery Institute of Gansu Province, Lanzhou 730000, PR China; The First School of Clinical Medicine, Lanzhou University, Lanzhou 730000, PR China.
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Undifferentiated Adipose Tissue Stem Cell Transplantation Promotes Hepatic Regeneration, Ameliorates Histopathologic Damage of the Liver, and Upregulates the Expression of Liver Regeneration- and Liver-Specific Genes in a Rat Model of Partial Hepatectomy. Stem Cells Int 2018; 2018:1393607. [PMID: 29731771 PMCID: PMC5872619 DOI: 10.1155/2018/1393607] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Accepted: 12/06/2017] [Indexed: 02/01/2023] Open
Abstract
Objective Adipose tissue stem cells (ADSCs) present a promising therapeutic method to alleviate liver failure (LF). The purpose of this prospective study was to evaluate the efficacy of undifferentiated ADSC transplantation on liver regeneration and on the expression of liver regeneration- and liver-specific genes, following 60% partial hepatectomy (PHx). Methods Sixty female rats were subjected to PHx and were transplanted with 106 or 2 × 106 ADSCs, either into the portal vein (PV) or into the hepatic parenchyma. Animals of the control group were not transplanted and served as controls. Animals were sacrificed on the 4th, the 7th, or the 15th postoperative day (POD). Results The transplanted ADSCs were successfully engrafted into the liver parenchyma and ameliorated the histopathologic damage on the 7th and 15th POD. All transplanted animals demonstrated a significantly higher liver regeneration rate on the 4th and 7th POD, compared with the control group. The expression of hepatocyte growth factor, α-fetoprotein, tyrosine aminotransferase, hepatocyte nuclear factor 4a, and cytochrome P450 1A2 was significantly upregulated, compared with the control group. Conclusions Although undifferentiated, ADSC transplantation significantly enhanced the liver regeneration process. These findings may be proven clinically valuable, especially in cases of acute LF.
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Trophic Activity and Phenotype of Adipose Tissue-Derived Mesenchymal Stem Cells as a Background of Their Regenerative Potential. Stem Cells Int 2017; 2017:1653254. [PMID: 28757877 PMCID: PMC5516761 DOI: 10.1155/2017/1653254] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 04/28/2017] [Accepted: 05/14/2017] [Indexed: 02/07/2023] Open
Abstract
There has been an increased interest in mesenchymal stem cells from adipose tissue, due to their abundance and accessibility with no ethical concerns. Their multipotent properties make them appropriate for regenerative clinical applications. It has been shown that adipose-derived stem cells (ASCs) may differ between the origin sites. Moreover, a variety of internal and external factors may affect their biological characteristics, as what we aimed to highlight in this review. It has been demonstrated that ASCs secrete multiple trophic factors that are capable of stimulating cell proliferation and differentiation and migration of various cell types. Particular attention should be given to exosomes, since it is known that they contribute to the paracrine effects of MSCs. Secretion of trophic agents by ASCs is thought to be in a greater importance for regenerative medicine applications, rather than cells engraftment to the site of injury and their differentiation ability. The surface marker profile of ASCs seems to be similar to that of the mesenchymal stem cells from bone marrow, although some molecular differences are observed. Thus, in this review, we have attempted to define trophic activity, as well as phenotypic characterization of ASCs, as crucial factors for therapeutic usage.
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Mesenchymal Stem Cells Transplantation following Partial Hepatectomy: A New Concept to Promote Liver Regeneration-Systematic Review of the Literature Focused on Experimental Studies in Rodent Models. Stem Cells Int 2017; 2017:7567958. [PMID: 28386285 PMCID: PMC5366767 DOI: 10.1155/2017/7567958] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Revised: 02/09/2017] [Accepted: 02/14/2017] [Indexed: 02/08/2023] Open
Abstract
Mesenchymal stem cells (MSCs) are an attractive source for regenerative medicine because they are easily accessible through minimally invasive methods and have the potential to enhance liver regeneration (LG) and improve liver function, following partial hepatectomy (PH) and acute or chronic liver injury. A systematic review of the literature was conducted for articles published up to September 1st, 2016, using the MEDLINE database. The keywords that were used in various combinations were as follows: “Mesenchymal stem cells”, “transplantation”, “stem cells”, “adipose tissue derived stem cells”, “bone marrow-derived stem cells”, “partial hepatectomy”, “acute liver failure”, “chronic liver failure”, “liver fibrosis”, “liver cirrhosis”, “rats”, “mice”, and “liver regeneration”. All introduced keywords were searched for separately in MeSH Database to control relevance and terminological accuracy and validity. A total of 41 articles were identified for potential inclusion and reviewed in detail. After a strict selection process, a total of 28 articles were excluded, leaving 13 articles to form the basis of this systematic review. MSCs transplantation promoted LG and improved liver function. Furthermore, MSCs had the ability to differentiate in hepatocyte-like cells, increase survival, and protect hepatocytes by paracrine mechanisms. MSCs transplantation may provide beneficial effects in the process of LG after PH and acute or chronic liver injury. They may represent a new therapeutic option to treat posthepatectomy acute liver failure.
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Heritability of in vitro phenotypes exhibited by murine adipose-derived stromal cells. Mamm Genome 2016; 27:460-8. [PMID: 27393554 DOI: 10.1007/s00335-016-9655-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 06/27/2016] [Indexed: 01/17/2023]
Abstract
Adipose-derived stromal cells (ADSCs) exhibit significant potential as therapeutic agents to promote tissue regeneration. Success of ADSC-based therapies is dependent upon efficient cell expansion in vitro as well as postinjection survival in the caustic milieu of damaged tissue. Genetic background regulates ADSC proliferative capacity and stress resistance, but the extent of the genetic effect size is not completely defined. The present study aimed to quantify phenotypic ranges and heritability of in vitro ADSC characteristics. ADSCs were isolated from mice representing 16 genetically diverse inbred mouse strains, including 12 classical inbred strains and four wild-derived strains. Cells were grown in vitro, and proliferative capacity and oxidative stress resistance were assessed. The fold change for ADSC growth ranged from 0.87 (BALB/cByJ) to 23.60 (POHN/DehJ), relative to original seeding density. The heritability of proliferative capacity was estimated to be 0.6462 (p = 9.967 × 10(-15)), and this phenotype was not associated with other ADSC traits. Cell viability following H2O2 treatment ranged from 39.81 % (CAST/EiJ) to 91.60 % (DBA/2 J), and the heritability of this phenotype was calculated as 0.6146 (p = 1.22 × 10(-12)). Relationships between cell viability and weight of the donor fat pad were also discovered. Donor genetic background is a major determinant of in vitro ADSC phenotypes. This study supports the development of forward genetics strategies to identify genes that underlie ADSC phenotypic diversity, which will inform efforts to improve cell-based therapies.
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Guo DL, Wang ZG, Xiong LK, Pan LY, Zhu Q, Yuan YF, Liu ZS. Hepatogenic differentiation from human adipose-derived stem cells and application for mouse acute liver injury. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2016; 45:224-232. [PMID: 26838674 DOI: 10.3109/21691401.2016.1138495] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- De-Liang Guo
- Department of Hepatopancreatobiliary Surgery, the First People's Hospital of Jingmen, Jingmen, People’s Republic of China
| | - Zhi-Gang Wang
- Department of Hepatopancreatobiliary Surgery, the First People's Hospital of Jingmen, Jingmen, People’s Republic of China
| | - Liang-Kun Xiong
- Department of Hepatopancreatobiliary, Renmin Hospital of Wuhan University, Wuhan, People’s Republic of China
| | - Le-Yu Pan
- Department of Hepatopancreatobiliary Surgery, the First People's Hospital of Jingmen, Jingmen, People’s Republic of China
| | - Qian Zhu
- Department of Hepatopancreatobiliary Surgery, the First People's Hospital of Jingmen, Jingmen, People’s Republic of China
| | - Yu-Feng Yuan
- Department of Hepatopancreatobiliary Surgery, Zhongnan Hospital, Wuhan University, Wuhan, People’s Republic of China
| | - Zhi-Su Liu
- Department of Hepatopancreatobiliary Surgery, Zhongnan Hospital, Wuhan University, Wuhan, People’s Republic of China
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Katselis C, Apostolou K, Feretis T, Papanikolaou IG, Zografos GC, Toutouzas K, Papalois A. Role of Stem Cells Transplantation in Tissue Regeneration After Acute or Chronic Acetaminophen Induced Liver Injury. J INVEST SURG 2015; 29:112-20. [PMID: 26650889 DOI: 10.3109/08941939.2015.1086040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
PURPOSE Acetaminophen-induced liver injury (APAP) is recognized as a frequent etiologic factor responsible for hepatic damage in the developed world. Management remains still elusive as treatment options are limited and their results are inconclusive. Consequently new strategies are explored at the experimental level. Mesenchymal stem cells (MSCs) present a promising modality as they can promote liver regeneration (LG) and compensate acute liver injury (ALI). MATERIALS AND METHODS Our research was focused on articles related to drug-induced liver injury, mechanisms of liver regeneration (LG) after Acute Liver Injury (ALI) and recent experimental protocols of Mesenchymal Stem Cells (MSCs) transplantation after chemical insult. All these studies are cited on Pubmed and MedLine. RESULTS This review has three distinct sections. First recent developments in ALI pathogenesis are presented. The second section covers cellular pathways and histological findings relevant to liver regeneration. The final chapter analyzes MSCs transplantation protocols after ALI and interrelation between liver regeneration and hepatic differentiation of MSCs. CONCLUSION Adipose tissue stem cells (ADSCs) and (MSCs) transplantation represents a promising modality in severe ALI management although many aspects remain to be clarified.
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Affiliation(s)
- Charalampos Katselis
- a Department of Propaedeutic Surgery , University of Athens, School of Medicine, General Hospital of Athens "Hippocration" , Athens , Greece.,b Experimental - Research Center , ELPEN Pharmaceuticals , Pikermi , Attica
| | - Konstantinos Apostolou
- a Department of Propaedeutic Surgery , University of Athens, School of Medicine, General Hospital of Athens "Hippocration" , Athens , Greece.,b Experimental - Research Center , ELPEN Pharmaceuticals , Pikermi , Attica
| | - Themistoklis Feretis
- a Department of Propaedeutic Surgery , University of Athens, School of Medicine, General Hospital of Athens "Hippocration" , Athens , Greece.,b Experimental - Research Center , ELPEN Pharmaceuticals , Pikermi , Attica
| | - Ioannis G Papanikolaou
- a Department of Propaedeutic Surgery , University of Athens, School of Medicine, General Hospital of Athens "Hippocration" , Athens , Greece.,b Experimental - Research Center , ELPEN Pharmaceuticals , Pikermi , Attica
| | - George C Zografos
- a Department of Propaedeutic Surgery , University of Athens, School of Medicine, General Hospital of Athens "Hippocration" , Athens , Greece
| | - Konstantinos Toutouzas
- a Department of Propaedeutic Surgery , University of Athens, School of Medicine, General Hospital of Athens "Hippocration" , Athens , Greece
| | - Apostolos Papalois
- a Department of Propaedeutic Surgery , University of Athens, School of Medicine, General Hospital of Athens "Hippocration" , Athens , Greece.,b Experimental - Research Center , ELPEN Pharmaceuticals , Pikermi , Attica
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Gadkari R, Zhao L, Teklemariam T, Hantash BM. Human embryonic stem cell derived-mesenchymal stem cells: an alternative mesenchymal stem cell source for regenerative medicine therapy. Regen Med 2015; 9:453-65. [PMID: 25159063 DOI: 10.2217/rme.14.13] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
AIM To enumerate and characterize mesenchymal stem cells (MSC) derived from human embryonic stem cells (hESC) for clinical application. MATERIALS & METHODS hESC were differentiated into hESC-MSC and characterized by the expression of surface markers using flow cytometry. hESC-MSC were evaluated with respect to growth kinetics, colony-forming potential, as well as osteogenic and adipogenic differentiation capacity. Immunosuppressive effects were assessed using peripheral blood mononuclear cell (PBMC) proliferation and cytotoxicity assays. RESULTS hESC-MSC showed similar morphology, and cell surface markers as adipose (AMSC) and bone marrow-derived MSC (BMSC). hESC-MSC exhibited a higher growth rate during early in vitro expansion and equivalent adipogenic and osteogenic differentiation and colony-forming potential as AMSC and BMSC. hESC-MSC demonstrated similar immunosuppressive effects as AMSC and BMSC. CONCLUSION hESC-MSC were comparable to BMSC and AMSC and hence can be used as an alternative source of MSC for clinical applications.
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Affiliation(s)
- Rishali Gadkari
- San Jose State University, 1 Washington Square, San Jose, CA 95192, USA
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Winkler S, Hempel M, Brückner S, Mallek F, Weise A, Liehr T, Tautenhahn HM, Bartels M, Christ B. Mouse white adipose tissue-derived mesenchymal stem cells gain pericentral and periportal hepatocyte features after differentiation in vitro, which are preserved in vivo after hepatic transplantation. Acta Physiol (Oxf) 2015; 215:89-104. [PMID: 26235702 DOI: 10.1111/apha.12560] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 07/17/2015] [Accepted: 07/29/2015] [Indexed: 12/13/2022]
Abstract
AIM Mesenchymal stem cells may differentiate into hepatocyte-like cells in vitro and in vivo. Therefore, they are considered a novel cell resource for the treatment of various liver diseases. Here, the aim was to demonstrate that mesenchymal stem cells may adopt both perivenous and periportal hepatocyte-specific functions in vitro and in vivo. METHODS Adipose tissue-derived mesenchymal stem cells were isolated from immunodeficient C57BL/6 (B6.129S6-Rag2(tm1Fwa) Prf1(tm1Clrk) ) mice and differentiated into the hepatocytic phenotype by applying a simple protocol. Their physiological and metabolic functions were analysed in vitro and after hepatic transplantation in vivo. RESULTS Mesenchymal stem cells changed their morphology from a fibroblastoid into shapes of osteocytes, chondrocytes, adipocytes and hepatocytes. Typical for mesenchymal stem cells, hematopoietic marker genes were not expressed. CD90, which is not expressed on mature hepatocytes, decreased significantly after hepatocytic differentiation. Markers indicative for liver development like hepatic nuclear factor 4 alpha, or for perivenous hepatocyte specification like cytochrome P450 subtype 3a11, and CD26 were significantly elevated. Periportal hepatocyte-specific markers like carbamoylphosphate synthetase 1, the entry enzyme of the urea cycle, were up-regulated. Consequently, cytochrome P450 enzyme activity and urea synthesis increased significantly to values comparable to cultured primary hepatocytes. Both perivenous and periportal qualities were preserved after hepatic transplantation and integration into the host parenchyma. CONCLUSIONS Adult mesenchymal stem cells from adipose tissue differentiated into hepatocyte-like cells featuring both periportal and perivenous functions. Hence, they are promising candidates for the treatment of region-specific liver cell damage and may support organ regeneration in acute and chronic liver diseases.
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Affiliation(s)
- S. Winkler
- Applied Molecular Hepatology Laboratory; Department of Visceral, Transplantation, Thoracic and Vascular Surgery; University Hospital of Leipzig; Leipzig Germany
| | - M. Hempel
- Applied Molecular Hepatology Laboratory; Department of Visceral, Transplantation, Thoracic and Vascular Surgery; University Hospital of Leipzig; Leipzig Germany
| | - S. Brückner
- Applied Molecular Hepatology Laboratory; Department of Visceral, Transplantation, Thoracic and Vascular Surgery; University Hospital of Leipzig; Leipzig Germany
| | - F. Mallek
- Jena University Hospital; Institute of Human Genetics; Friedrich Schiller University; Jena Germany
| | - A. Weise
- Jena University Hospital; Institute of Human Genetics; Friedrich Schiller University; Jena Germany
| | - T. Liehr
- Jena University Hospital; Institute of Human Genetics; Friedrich Schiller University; Jena Germany
| | - H.-M. Tautenhahn
- Applied Molecular Hepatology Laboratory; Department of Visceral, Transplantation, Thoracic and Vascular Surgery; University Hospital of Leipzig; Leipzig Germany
- Translational Centre for Regenerative Medicine (TRM); University of Leipzig; Leipzig Germany
- Department of Visceral, Transplantation, Thoracic and Vascular Surgery; University Hospital of Leipzig; Leipzig Germany
| | - M. Bartels
- Department of Visceral, Transplantation, Thoracic and Vascular Surgery; University Hospital of Leipzig; Leipzig Germany
| | - B. Christ
- Applied Molecular Hepatology Laboratory; Department of Visceral, Transplantation, Thoracic and Vascular Surgery; University Hospital of Leipzig; Leipzig Germany
- Translational Centre for Regenerative Medicine (TRM); University of Leipzig; Leipzig Germany
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Abstract
We have witnessed a rapid expansion of in vitro characterization and differentiation of adipose-derived stem cells, with increasing translation to both in vivo models and a breadth of clinical specialties. However, an appreciation of the truly heterogeneous nature of this unique stem cell group has identified a need to more accurately delineate subpopulations by any of a host of methods, to include functional properties or surface marker expression. Cells selected for improved proliferative, differentiative, angiogenic or ischemia-resistant properties are but a few attributes that could prove beneficial for targeted treatments or therapies. Optimizing cell culture conditions to permit re-introduction to patients is critical for clinical translation.
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Affiliation(s)
- Kavan S Johal
- Blond McIndoe Laboratories, Institute of Inflammation & Repair, School of Medicine, University of Manchester, M13 9PT, UK
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Characterization of Nestin, a Selective Marker for Bone Marrow Derived Mesenchymal Stem Cells. Stem Cells Int 2015; 2015:762098. [PMID: 26236348 PMCID: PMC4506912 DOI: 10.1155/2015/762098] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 06/07/2015] [Accepted: 06/22/2015] [Indexed: 12/17/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are multipotent cells capable of differentiating into multiple cell lineages and contributing to tissue repair and regeneration. Characterization of the physiological function of MSCs has been largely hampered by lack of unique markers. Nestin, originally found in neuroepithelial stem cells, is an intermediate filament protein expressed in the early stages of development. Increasing studies have shown a particular association between Nestin and MSCs. Nestin could characterize a subset of bone marrow perivascular MSCs which contributed to bone development and closely contacted with hematopoietic stem cells (HSCs). Nestin expressing (Nes(+)) MSCs also play a role in the progression of various diseases. However, Nes(+) cells were reported to participate in angiogenesis as MSCs or endothelial progenitor cells (EPCs) in several tissues and be a heterogeneous population comprising mesenchymal cells and endothelial cells in the developing bone marrow. In this review article, we will summarize the progress of the research on Nestin, particularly the function of Nes(+) cells in bone marrow, and discuss the feasibility of using Nestin as a specific marker for MSCs.
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Śmieszek A, Basińska K, Chrząstek K, Marycz K. In Vitro and In Vivo Effects of Metformin on Osteopontin Expression in Mice Adipose-Derived Multipotent Stromal Cells and Adipose Tissue. J Diabetes Res 2015; 2015:814896. [PMID: 26064989 PMCID: PMC4430663 DOI: 10.1155/2015/814896] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 04/02/2015] [Accepted: 04/09/2015] [Indexed: 12/19/2022] Open
Abstract
Metformin is applied not only as antidiabetic drug, but also in the treatment of obesity or as antiaging drug. The first part of the research discussed the effect of metformin at concentrations of 1 mM, 5 mM, and 10 mM on the morphology, ultrastructure, and proliferation potential of mice adipose-derived multipotent mesenchymal stromal cells (ASCs) in vitro. Additionally, we determined the influence of metformin on mice adipose tissue metabolism. This study has shown for the first time that metformin inhibits the proliferative potential of ASCs in vitro in a dose- and time-dependent manner. In addition, we have found a significant correlation between the activity of ASCs and osteopontin at the mRNA and protein level. Furthermore, we have demonstrated that 5 mM and 10 mM metformin have cytotoxic effect on ASCs, causing severe morphological, ultrastructural, and apoptotic changes. The reduced level of OPN in the adipose tissue of metformin-treated animals strongly correlated with the lower expression of Ki67 and CD105 and increased caspase-3. The metformin influenced also circulating levels of OPN, which is what was found with systemic and local action of metformin. The results are a valuable source of information regarding the in vitro effect of metformin on adipose-derived stem cells.
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Affiliation(s)
- Agnieszka Śmieszek
- The Faculty of Biology and Animal Science, University of Environmental and Life Sciences, Kozuchowska 5b Street, 50-631 Wroclaw, Poland
- Wrocławskie Centrum Badań EIT+, Stablowicka 147 Street, 54-066 Wroclaw, Poland
| | - Katarzyna Basińska
- The Faculty of Biology and Animal Science, University of Environmental and Life Sciences, Kozuchowska 5b Street, 50-631 Wroclaw, Poland
| | - Klaudia Chrząstek
- The Faculty of Biology and Animal Science, University of Environmental and Life Sciences, Kozuchowska 5b Street, 50-631 Wroclaw, Poland
| | - Krzysztof Marycz
- The Faculty of Biology and Animal Science, University of Environmental and Life Sciences, Kozuchowska 5b Street, 50-631 Wroclaw, Poland
- Wrocławskie Centrum Badań EIT+, Stablowicka 147 Street, 54-066 Wroclaw, Poland
- *Krzysztof Marycz:
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Xu D, Nishimura T, Zheng M, Wu M, Su H, Sato N, Lee G, Michie S, Glenn J, Peltz G. Enabling Autologous Human Liver Regeneration with Differentiated Adipocyte Stem Cells. Cell Transplant 2014; 23:1573-84. [DOI: 10.3727/096368913x673432] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
We developed a novel method for differentiating adipocyte-derived stem cells (ASCs) into hepatocyte-like cells (iHeps). ASCs are cultured as spherical cellular aggregates and are then induced by culture in chemically defined media for a short time period to differentiate into spherical culture iHeps (SCi-Heps). SCi-Heps have many of the in vitro functional properties of mature hepatocytes, and they can stably reconstitute functioning human liver in vivo in a murine model system. Implantation studies demonstrate that SCi-Heps have a very low malignant potential. All human liver regenerative procedures, including ultrasound-guided direct liver implantation, are scalable and appropriate for human clinical use. These methods can be used to achieve the major promise of regenerative medicine. It may now be possible to regenerate human liver using autologous stem cells obtained from a readily accessible tissue.
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Affiliation(s)
- Dan Xu
- Department of Anesthesia, Stanford University School of Medicine, Stanford, CA, USA
| | - Toshihiko Nishimura
- Department of Anesthesia, Stanford University School of Medicine, Stanford, CA, USA
| | - Ming Zheng
- Department of Anesthesia, Stanford University School of Medicine, Stanford, CA, USA
| | - Manhong Wu
- Department of Anesthesia, Stanford University School of Medicine, Stanford, CA, USA
| | - Hua Su
- Department of Biochemistry, University of California-Riverside, Riverside, CA, USA
| | - Noboru Sato
- Department of Biochemistry, University of California-Riverside, Riverside, CA, USA
| | - Gordon Lee
- Department of Plastic Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Sara Michie
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Jeffrey Glenn
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Gary Peltz
- Department of Anesthesia, Stanford University School of Medicine, Stanford, CA, USA
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Neurogenic differentiation from adipose-derived stem cells and application for autologous transplantation in spinal cord injury. Cell Tissue Bank 2014; 16:335-42. [PMID: 25330756 DOI: 10.1007/s10561-014-9476-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 10/07/2014] [Indexed: 10/24/2022]
Abstract
Mesenchymal stem cells derived from adipose tissue have the capacity to differentiate into endodermal, mesoderm and ectodermal cell lineages in vitro, which are an ideal engraft in tissue-engineered repair. In this study, mouse adipose-derived stem cells (ADSCs) were isolated from subcutaneous fat. The markers of ADSCs, CD13, CD29, CD44, CD71, CD73, CD90, CD105, CD166, Nestin, GFAP and MAP-2 were detected by immunofluorescence assays. The ADSCs were cultured in cocktail factors (including ATRA, GGF-2, bFGF, PDGF and forskolin) for neurogenic differentiation. The neurogenic cells markers, Nestin, GFAP and MAP-2 were analyzed using immunofluorescence and real-time PCR after dramatic changes in morphology. Neurogenic cells from ADSCs were autologous transplanted into the mouse of spinal cord injury for observation neurogenic cells colonization in spinal cord. The result demonstrated that the mouse ADSCs were positive for the CD13, CD29, CD44, CD71, CD73, CD90, CD105 and CD166 but negative for neurogenic cell markers, MAP-2, GFAP and Nestin. After neurogenic differentiation, the neurogenic cells were positive for neurogenic cell special markers, gene expression level showed a time-lapse increase, and the cells were successful colonized into spinal cord. In conclusion, our research shows that a population of neuronal cells can be specifically generated from ADSCs and that induced cells may allow for participation in tissue-repair.
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Alizadeh E, Akbarzadeh A, Eslaminejad MB, Barzegar A, Hashemzadeh S, Nejati-Koshki K, Zarghami N. Up regulation of liver-enriched transcription factors HNF4a and HNF6 and liver-specific microRNA (miR-122) by inhibition of let-7b in mesenchymal stem cells. Chem Biol Drug Des 2014; 85:268-79. [PMID: 25059576 DOI: 10.1111/cbdd.12398] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 05/31/2014] [Accepted: 07/12/2014] [Indexed: 12/15/2022]
Abstract
MicroRNAs are small non-coding RNAs that regulate key processes of the stem cells. Although, microRNAs have emerged as powerful regulators of differentiation, few studies have been focused on the post-transcriptional regulation of hepatic differentiation in mesenchymal stem cells (MSCs) by microRNAs. The aim of this study was to evaluate the specific effect of let-7 microRNAs in particular let-7b in hepatic commitment of human adipose tissue-derived mesenchymal stem cells (hAT-MSCs). The dynamic expression profile of let-7a, b, c microRNAs and two liver-enriched transcription factors (LETFs) HNF4a and HNF6 was studied during in vitro hepatic differentiation of hAT-MSCs. Let-7b was used for transient overexpression and knockdown investigations. It was shown that the expression of LETFs is inversely correlated with those of let-7 miRNAs during differentiation progress (p < 0.05). Inhibition of let-7b caused upregulation of LETFs, an increase in the expression of miR-122 (p < 0.01) emulating the features of functional hepatocytes, and accumulation of hAT-MSCs in the G0 /G1 phase of cell cycle, triggering initiation of hepatic commitment. In conclusion, transient inhibition of let-7b activates hepatic differentiation of hAT-MSCs. The findings of this work might help optimization of in vitro hepatogenic differentiation utilizing microRNAs and hAT-MSCs that could be used for therapeutic purposes.
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Affiliation(s)
- Effat Alizadeh
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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Alizadeh E, Zarghami N, Eslaminejad MB, Akbarzadeh A, Barzegar A, Mohammadi SA. The effect of dimethyl sulfoxide on hepatic differentiation of mesenchymal stem cells. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2014; 44:157-64. [PMID: 24978442 DOI: 10.3109/21691401.2014.928778] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
INTRODUCTION Adipose tissue-derived mesenchymal stem cells (AT-MSCs) are suitable choices in autologous stem cell treatment of liver-associated diseases due to their hepatic differentiation potential. Dimethyl sulfoxide (DMSO) is an amphipathic molecule with potential of delivering both lipophilic and hydrophilic agents into cells, also a common cryoprotectant for freezing of the cells. DMSO was used in some protocols for induction of AT-MSCs towards hepatocyte like cells. However, the effect of DMSO on hepatogenic differentiation of AT-MSCs were not surveyed, previously. In the present study, we aimed at evaluation of the effect of DMSO on differentiation of AT-MSCs into hepatic lineage. METHODS We isolated mesenchymal stem cells (MSCs) from adipose tissue, and then verifies multi-potency and surface markers of AT-MSCs . Isolated AT-MSCs randomly dispensed in four groups including Group 1: HGF treated, 2: HGF+ DMSO treated, 3: HGF+ DMSO+ OSM treated, and group control for a period of 3 weeks in the expansion medium without serum; EGF and bFGF were also included in the first days of inductions. The morphologic changes during induction period was observed with microscopy. The secretion of albumin (ALB) of the differentiating MSCs was investigated using ELISA, and urea production was evaluated using colorimetric assay. The qRT-PCR was performed for quantitation of hepatocyte marker genes including AFP, ALB, CK18, HNF4a, and HNF6. The glycogen storage of differentiated cells was visualized by periodic-acid Schiff‘s staining. RESULTS The results demonstrate that DMSO speeds up hepatic differentiation of AT-MSCs characterized by rapid changes in morphology; higher expression of hepatic marker gene (ALB) in both mRNA and protein level (P < 0.05); also increased transcriptional levels of other liver genes including CK18, HNF4a, and HNF6 (P < 0.01); and moreover, greater percentage of glycogen storage(p < 0.05) in DMSO-treated groups. CONCLUSION DMSO catalyzes hepatic differentiation; therefore, using DMSO for acceleration of the hepatogenic protocols of AT-MSCs appears advantageous.
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Affiliation(s)
- Effat Alizadeh
- a Department of Medical Biotechnology , Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences , Tabriz , Iran
| | - Nosratollah Zarghami
- a Department of Medical Biotechnology , Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences , Tabriz , Iran.,b The Umbilical Cord Stem Cell Research Center (UCSRC), Tabriz University of Medical Sciences , Tabriz , Iran
| | - Mohamadreza Baghaban Eslaminejad
- c Department of Stem Cells and Developmental Biology at Cell Sciences Research Center , Royan Institute for Stem Cell Biology and Technology, ACECR , Tehran , Iran
| | - Abolfazl Akbarzadeh
- d Department of Medical Nanotechnology , Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences , Tabriz , Iran
| | - Abolfazl Barzegar
- e Research Institute for Fundamental Sciences (RIFS), University of Tabriz , Tabriz , Iran
| | - Seyed Abolghasem Mohammadi
- f Department of Agronomy and Plant Breeding , Faculty of Agriculture, University of Tabriz , Tabriz , Iran
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Katsuda T, Kurata H, Tamai R, Banas A, Ishii T, Ishikawa S, Ochiya T. The in vivo evaluation of the therapeutic potential of human adipose tissue-derived mesenchymal stem cells for acute liver disease. Methods Mol Biol 2014; 1213:57-67. [PMID: 25173374 DOI: 10.1007/978-1-4939-1453-1_6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Mesenchymal stem cells (MSCs) have emerged as an attractive candidate for cell therapy applications. In the prior decade, many animal studies have demonstrated that MSCs are therapeutically beneficial for the treatment of liver disease. The carbon tetrachloride (CCl4)-induced acute hepatitis model has been the most widely used model in these studies. Our group has utilized the CCl4-induced mouse hepatitis model to study the therapeutic potential of human adipose tissue-derived MSCs (hADSCs). We have demonstrated that systemically administered hADSCs engrafted into the damaged liver and promoted tissue repair. This phenomenon likely reflected the paracrine effects of the administered hADSCs. In this chapter, we describe a method to evaluate the therapeutic efficacy of the systemic administration of hADSCs in the CCl4-induced mouse model of acute hepatitis.
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Affiliation(s)
- Takeshi Katsuda
- Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
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Katsuda T, Oki K, Ochiya T. Potential application of extracellular vesicles of human adipose tissue-derived mesenchymal stem cells in Alzheimer's disease therapeutics. Methods Mol Biol 2014; 1212:171-81. [PMID: 25085563 DOI: 10.1007/7651_2014_98] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In the last 20 years, extracellular vesicles (EVs) have attracted attention as a versatile cell-cell communication mediator. The biological significance of EVs remains to be fully elucidated, but many reports have suggested that the functions of EVs mirror, at least in part, those of the cells from which they originate. Mesenchymal stem cells (MSCs) are a type of adult stem cell that can be isolated from connective tissue including bone marrow and adipose tissue and have emerged as an attractive candidate for cell therapy applications. Accordingly, an increasing number of reports have shown that EVs derived from MSCs have therapeutic potential in multiple diseases. We recently reported a novel therapeutic potential of EVs secreted from human adipose tissue-derived MSCs (hADSCs) (also known as adipose tissue-derived stem cells; ASCs) against Alzheimer's disease (AD). We found that hADSCs secrete exosomes carrying enzymatically active neprilysin, the most important β-amyloid peptide (Aβ)-degrading enzyme in the brain. In this chapter, we describe a method by which to evaluate the therapeutic potential of hADSC-derived EVs against AD from the point of view of their Aβ-degrading capacity.
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Affiliation(s)
- Takeshi Katsuda
- Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
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Brückner S, Tautenhahn HM, Winkler S, Stock P, Dollinger M, Christ B. A fat option for the pig: hepatocytic differentiated mesenchymal stem cells for translational research. Exp Cell Res 2013; 321:267-75. [PMID: 24200501 DOI: 10.1016/j.yexcr.2013.10.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 10/21/2013] [Accepted: 10/27/2013] [Indexed: 02/07/2023]
Abstract
STUDY BACKGROUND Extended liver resection is the only curative treatment option of liver cancer. Yet, the residual liver may not accomplish the high metabolic and regenerative capacity needed, which frequently leads to acute liver failure. Because of their anti-inflammatory and -apoptotic as well as pro-proliferative features, mesenchymal stem cells differentiated into hepatocyte-like cells might provide functional and regenerative compensation. Clinical translation of basic research requires pre-clinical approval in large animals. Therefore, we characterized porcine mesenchymal stem cells (MSC) from adipose tissue and bone marrow and their hepatocyte differentiation potential for future assessment of functional liver support after surgical intervention in the pig model. METHODS Mesenchymal surface antigens and multi-lineage differentiation potential of porcine MSC isolated by collagenase digestion either from bone marrow or adipose tissue (subcutaneous/visceral) were assessed by flow cytometry. Morphology and functional properties (urea-, glycogen synthesis and cytochrome P450 activity) were determined during culture under differentiation conditions and compared with primary porcine hepatocytes. RESULTS MSC from porcine adipose tissue and from bone marrow express the typical mesenchymal markers CD44, CD29, CD90 and CD105 but not haematopoietic markers. MSC from both sources displayed differentiation into the osteogenic as well as adipogenic lineage. After hepatocyte differentiation, expression of CD105 decreased significantly and cells adopted the typical polygonal morphology of hepatocytes. Glycogen storage was comparable in adipose tissue- and bone marrow-derived cells. Urea synthesis was about 35% lower in visceral than in subcutaneous adipose tissue-derived MSC. Cytochrome P450 activity increased significantly during differentiation and was twice as high in hepatocyte-like cells generated from bone marrow as from adipose tissue. CONCLUSION The hepatocyte differentiation of porcine adipose tissue-derived MSC was shown for the first time yielding hepatocyte-like cells with specific functions similar in bone marrow and subcutaneous adipose tissue-derived MSC. That makes them good pre-clinical candidates for supportive approaches after liver resection in the pig.
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Affiliation(s)
- Sandra Brückner
- University Hospital Leipzig, Department of Visceral, Transplantation, Thoracic and Vascular Surgery, Liebigstraße 21, Leipzig D-04103, Germany.
| | - Hans-Michael Tautenhahn
- University Hospital Leipzig, Department of Visceral, Transplantation, Thoracic and Vascular Surgery, Liebigstraße 21, Leipzig D-04103, Germany; TRM, Translational Centre for Regenerative Medicine, Philipp-Rosenthal-Str. 55, Leipzig D-04103, Germany.
| | - Sandra Winkler
- University Hospital Leipzig, Department of Visceral, Transplantation, Thoracic and Vascular Surgery, Liebigstraße 21, Leipzig D-04103, Germany.
| | - Peggy Stock
- University Hospital Leipzig, Department of Visceral, Transplantation, Thoracic and Vascular Surgery, Liebigstraße 21, Leipzig D-04103, Germany.
| | - Matthias Dollinger
- University Hospital Ulm, First Department of Medicine, Albert-Einstein-Allee 23, Ulm D-89081, Germany.
| | - Bruno Christ
- University Hospital Leipzig, Department of Visceral, Transplantation, Thoracic and Vascular Surgery, Liebigstraße 21, Leipzig D-04103, Germany; TRM, Translational Centre for Regenerative Medicine, Philipp-Rosenthal-Str. 55, Leipzig D-04103, Germany.
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The road to regenerative liver therapies: the triumphs, trials and tribulations. Biotechnol Adv 2013; 31:1085-93. [PMID: 24055818 DOI: 10.1016/j.biotechadv.2013.08.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 08/07/2013] [Accepted: 08/11/2013] [Indexed: 12/13/2022]
Abstract
The liver is one of the few organs that possess a high capacity to regenerate after liver failure or liver damage. The parenchymal cells of the liver, hepatocytes, contribute to the majority of the regeneration process. Thus, hepatocyte transplantation presents an alternative method to treating liver damage. However, shortage of hepatocytes and difficulties in maintaining primary hepatocytes still remain key obstacles that researchers must overcome before hepatocyte transplantation can be used in clinical practice. The unique properties of pluripotent stem cells (PSCs) and induced pluripotent stem cells (iPSCs) have provided an alternative approach to generating enough functional hepatocytes for cellular therapy. In this review, we will present a brief overview on the current state of hepatocyte differentiation from PSCs and iPSCs. Studies of liver regenerative processes using different cell sources (adult liver stem cells, hepatoblasts, hepatic progenitor cells, etc.) will be described in detail as well as how this knowledge can be applied towards optimizing culture conditions for the maintenance and differentiation of these cells towards hepatocytes. As the outlook of stem cell-derived therapy begins to look more plausible, researchers will need to address the challenges we must overcome in order to translate stem cell research to clinical applications.
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Pazdro R, Harrison DE. Murine adipose tissue-derived stromal cell apoptosis and susceptibility to oxidative stress in vitro are regulated by genetic background. PLoS One 2013; 8:e61235. [PMID: 23593442 PMCID: PMC3617166 DOI: 10.1371/journal.pone.0061235] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Accepted: 03/08/2013] [Indexed: 11/24/2022] Open
Abstract
Adipose tissue-derived stromal cells (ADSCs) are of interest for regenerative medicine as they are isolated easily and can differentiate into multiple cell lineages. Studies of their in vitro proliferation, survival, and differentiation are common; however, genetic effects on these phenotypes remain unknown. To test if these phenotypes are genetically regulated, ADSCs were isolated from three genetically diverse inbred mouse strains- C57BL/6J (B6), BALB/cByJ (BALB), and DBA/2J (D2)- in which genetic regulation of hematopoietic stem function is well known. ADSCs from all three strains differentiated into osteogenic and chondrogenic lineages in vitro. ADSCs from BALB grew least well in vitro, probably due to apoptotic cell death after several days in culture. BALB ADSCs were also the most susceptible to the free radical inducers menadione and H2O2. ADSCs from the three possible F1 hybrids were employed to further define genetic regulation of ADSC phenotypes. D2, but not B6, alleles stimulated ADSC expansion in BALB cells. In contrast, B6, but not D2, alleles rescued BALB H2O2 resistance. We conclude that low oxidative stress resistance does not limit BALB ADSC growth in vitro, as these phenotypes are genetically regulated independently. In addition, ADSCs from these strains are an appropriate model system to investigate genetic regulation of ADSC apoptosis and stress resistance in future studies. Such investigations are essential to optimize cell expansion and differentiation and thus, potential for regenerative medicine.
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Affiliation(s)
- Robert Pazdro
- The Jackson Laboratory, Bar Harbor, Maine, United States of America
| | - David E. Harrison
- The Jackson Laboratory, Bar Harbor, Maine, United States of America
- * E-mail:
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Microcapillary culture method: a novel tool for in vitro expansion of stem cells from scarce sources. Arch Med Res 2012; 43:423-30. [PMID: 22959977 DOI: 10.1016/j.arcmed.2012.08.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Accepted: 07/05/2012] [Indexed: 11/23/2022]
Abstract
BACKGROUND AND AIMS Although increasing numbers of studies report the derivation of stem cells from a variety of different tissues, derivation efficiencies greatly vary among different studies even for the same tissue source. Hence, a consistent and efficient isolation protocol has not yet been established to date. Several factors have so far been documented that influence and limit mesenchymal stem cell (MSC) isolation and cultivation, including the age and gender of the tissue donor, origin of the tissue, amount of sampled tissue material and cell culture characteristics including the choice of basal media, serum, gas composition, etc. The aim of the study was to investigate the microcapillary culture method (MCM) to establish an efficient and consistent isolation as well as cultivation protocol by comparing the results with other classic culture systems (flasks, center wells). METHODS MSCs isolated from adipose tissue of different donors were observed comparatively under different culture systems (flasks, center wells, microcapillary tubes) and their proliferation and differentiation were investigated. Flow cytometry was used for immunophenotypic characterization of derived cells and histochemical staining (Oil Red O and Alizarin Red S) was applied for determining their differentiation capacity. RESULTS It has been shown for the first time that AD-MSCs can consistently and efficiently be derived from a scarce amount of adipose tissue by MCM. CONCLUSIONS Further and similar studies should be performed to determine whether this methodology can also be applicable for other MSC sources.
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