451
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Takedachi M, Sawada K, Yamamoto S, Ozasa M, Shimabukuro Y, Kitamura M, Murakami S. Periodontal tissue regeneration by transplantation of adipose tissue-derived stem cells. J Oral Biosci 2013. [DOI: 10.1016/j.job.2013.04.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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452
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Abstract
Development of antitumor preparations with low toxicity and high selectivity of action is one of the top priorities of cancer gene therapy. Mesenchymal stem cells possess natural tropism towards tumors, a property that makes possible their use as a vehicle for targeted delivery of therapeutic genes into tumors of various etiologies. At present, genes encoding enzymes (cytosine deaminase, thymidine kinase, carboxyl esterase), cytokines (IL-2, IL-4, IL-12, IFN-beta) and apoptosis inducing factors (TRAIL) are used as therapeutic genes. Mesenchymal stem cells, as demonstrated using experimental models of tumors of various etiologies as well as animals with metastases in brain and lungs, are able to successfully deliver therapeutic genes into tumors and produce significant antitumor effect. However, to effectively use this therapeutic strategy in clinic, one still has to solve a number of technical problems.
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453
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Tobita M, Uysal CA, Guo X, Hyakusoku H, Mizuno H. Periodontal tissue regeneration by combined implantation of adipose tissue-derived stem cells and platelet-rich plasma in a canine model. Cytotherapy 2013; 15:1517-26. [PMID: 23849975 DOI: 10.1016/j.jcyt.2013.05.007] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 04/06/2013] [Accepted: 05/11/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND AIMS One goal of periodontal therapy is to regenerate periodontal tissues. Stem cells, growth factors and scaffolds and biomaterials are vital for the restoration of the architecture and function of complex tissues. Adipose tissue-derived stem cells (ASCs) are an ideal population of stem cells for practical regenerative medicine. In addition, platelet-rich plasma (PRP) can be useful for its ability to stimulate tissue regeneration. PRP contains various growth factors and may be useful as a cell carrier in stem cell therapies. The purpose of this study was to determine whether a mixture of ASCs and PRP promoted periodontal tissue regeneration in a canine model. METHODS Autologous ASCs and PRP were implanted into areas with periodontal tissue defects. Periodontal tissue defects that received PRP alone or non-implantation were also examined. Histologic, immunohistologic and x-ray studies were performed 1 or 2 months after implantation. The amount of newly formed bone and the scale of newly formed cementum in the region of the periodontal tissue defect were analyzed on tissue sections. RESULTS The areas of newly formed bone and cementum were greater 2 months after implantation of ASCs and PRP than at 1 month after implantation, and the radiopacity in the region of the periodontal tissue defect increased markedly by 2 months after implantation. The ASCs and PRP group exhibited periodontal tissue with the correct architecture, including alveolar bone, cementum-like structures and periodontal ligament-like structures, by 2 months after implantation. CONCLUSIONS These findings suggest that a combination of autologous ASCs and PRP promotes periodontal tissue regeneration that develops the appropriate architecture for this complex tissue.
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Affiliation(s)
- Morikuni Tobita
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
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454
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Fan W, Cheng K, Qin X, Narsinh KH, Wang S, Hu S, Wang Y, Chen Y, Wu JC, Xiong L, Cao F. mTORC1 and mTORC2 play different roles in the functional survival of transplanted adipose-derived stromal cells in hind limb ischemic mice via regulating inflammation in vivo. Stem Cells 2013; 31:203-14. [PMID: 23081858 DOI: 10.1002/stem.1265] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Revised: 09/19/2012] [Accepted: 09/23/2012] [Indexed: 12/21/2022]
Abstract
Poor cell survival severely limits the beneficial effects of stem cell therapy for peripheral arterial disease (PAD). This study was designed to investigate the role of mammalian target of rapamycin (mTOR) in the survival and therapeutic function of transplanted murine adipose-derived stromal cells (mADSCs) in a murine PAD model. mADSCs (1.0 × 10(7)) were isolated from dual-reporter firefly luciferase and enhanced green fluorescent protein-positive transgenic mice, intramuscularly implanted into the hind limb of C57BL/6 mice after femoral artery ligation/excision, and monitored using noninvasive bioluminescence imaging (BLI). Although engrafted mADSCs produced antiapoptotic/proangiogenic effects in vivo by modulating the inflammatory and angiogenic cytokine response involving the mTOR pathway, longitudinal BLI revealed progressive death of post-transplant mADSCs within ~4 weeks in the ischemic hind limb. Selectively targeting mTOR complex-1 (mTORC1) using low-dose rapamycin treatment with mADSCs attenuated proinflammatory cytokines (interleukin [IL]-1β and tumor necrosis factor-alpha [TNF-α]) expression and neutrophil/macrophage infiltration, which overtly promoted mADSCs viability and antiapoptotic/proangiogenic efficacy in vivo. However, targeting dual mTORC1/mTORC2 using PP242 or high-dose rapamycin caused IL-1β/TNF-α upregulation and anti-inflammatory IL-10, IL-6, and vascular endothelial growth factor/vascular endothelial growth factor receptor 2 downregulation, undermining the survival and antiapoptotic/proangiogenic action of mADSCs in vivo. Furthermore, low-dose rapamycin abrogated TNF-α secretion by mADSCs and rescued the cells from hypoxia/reoxygenation-induced death in vitro, while PP242 or high-dose rapamycin exerted proinflammatory effects and promoted cell death. In conclusion, mTORC1 and mTORC2 may differentially regulate inflammation and affect transplanted mADSCs' functional survival in ischemic hind limb. These findings uncover that mTOR may evolve into a promising candidate for mechanism-driven approaches to facilitate the translation of cell-based PAD therapy.
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Affiliation(s)
- Weiwei Fan
- Department of Cardiology & Molecular Imaging Program, Fourth Military Medical University, Xi'an, Shaanxi, China
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455
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456
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Comprehensive characterization of human adipose tissue-derived stem cells expanded in vitro. Biologia (Bratisl) 2013. [DOI: 10.2478/s11756-013-0201-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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457
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Krumboeck A, Giovanoli P, Plock JA. Fat grafting and stem cell enhanced fat grafting to the breast under oncological aspects--recommendations for patient selection. Breast 2013; 22:579-84. [PMID: 23769661 DOI: 10.1016/j.breast.2013.05.006] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Accepted: 05/05/2013] [Indexed: 11/29/2022] Open
Abstract
Reconstructive and aesthetic fat grafting has been introduced to the breast level over the last years. The safety of such procedures has so far not been completely clarified. The concept has now been refined to stem cell enhanced fat grafting. However beside the promise of using adult stem cells in terms of tissue rejuvenation and augmentation, scar treatment and reconstruction, the variance of adipose stem cell function--including angiogenetic, antiapoptotic, immunomodulatory, chemotactic and anti-scarring potential--raises new scepsis about oncological safety. Herein we reviewed experimental and clinical data on fat grafting and stem cell enhanced fat grafting addressing surgical promise and oncological concerns. Based on these data we suggest clinical criteria for patient selection undergoing fat grafting for aesthetic or reconstructive reasons based on their individual breast cancer risk.
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Affiliation(s)
- Anna Krumboeck
- Division of Plastic and Hand Surgery, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
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458
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Shan T, Liang X, Bi P, Zhang P, Liu W, Kuang S. Distinct populations of adipogenic and myogenic Myf5-lineage progenitors in white adipose tissues. J Lipid Res 2013; 54:2214-2224. [PMID: 23740968 DOI: 10.1194/jlr.m038711] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Brown adipose tissues (BAT) are derived from a myogenic factor 5 (Myf5)-expressing cell lineage and white adipose tissues (WAT) predominantly arise from non-Myf5 lineages, although a subpopulation of adipocytes in some WAT depots can be derived from the Myf5 lineage. However, the functional implication of the Myf5- and non-Myf5-lineage cells in WAT is unclear. We found that the Myf5-lineage constitution in subcutaneous WAT depots is negatively correlated to the expression of classical BAT and newly defined beige/brite adipocyte-specific genes. Consistently, fluorescent-activated cell sorting (FACS)-purified Myf5-lineage adipo-progenitors give rise to adipocytes expressing lower levels of BAT-specific Ucp1, Prdm16, Cidea, and Ppargc1a genes and beige adipocyte-specific CD137, Tmem26, and Tbx1 genes compared with the non-Myf5-lineage adipocytes from the same depots. Ablation of the Myf5-lineage progenitors in WAT stromal vascular cell (SVC) cultures leads to increased expression of BAT and beige cell signature genes. Strikingly, the Myf5-lineage cells in WAT are heterogeneous and contain distinct adipogenic [stem cell antigen 1(Sca1)-positive] and myogenic (Sca1-negative) progenitors. The latter differentiate robustly into myofibers in vitro and in vivo, and they restore dystrophin expression after transplantation into mdx mouse, a model for Duchenne muscular dystrophy. These results demonstrate the heterogeneity and functional differences of the Myf5- and non-Myf5-lineage cells in the white adipose tissue.
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Affiliation(s)
- Tizhong Shan
- Department of Animal Science and Purdue University, West Lafayette, IN 47907
| | - Xinrong Liang
- Department of Animal Science and Purdue University, West Lafayette, IN 47907
| | - Pengpeng Bi
- Department of Animal Science and Purdue University, West Lafayette, IN 47907
| | - Pengpeng Zhang
- Department of Animal Science and Purdue University, West Lafayette, IN 47907
| | - Weiyi Liu
- Department of Animal Science and Purdue University, West Lafayette, IN 47907
| | - Shihuan Kuang
- Department of Animal Science and Purdue University, West Lafayette, IN 47907; Purdue University Center for Cancer Research, Purdue University, West Lafayette, IN 47907.
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459
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Heneidi S, Simerman AA, Keller E, Singh P, Li X, Dumesic DA, Chazenbalk G. Awakened by cellular stress: isolation and characterization of a novel population of pluripotent stem cells derived from human adipose tissue. PLoS One 2013; 8:e64752. [PMID: 23755141 PMCID: PMC3673968 DOI: 10.1371/journal.pone.0064752] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 04/17/2013] [Indexed: 12/15/2022] Open
Abstract
Advances in stem cell therapy face major clinical limitations, particularly challenged by low rates of post-transplant cell survival. Hostile host factors of the engraftment microenvironment such as hypoxia, nutrition deprivation, pro-inflammatory cytokines, and reactive oxygen species can each contribute to unwanted differentiation or apoptosis. In this report, we describe the isolation and characterization of a new population of adipose tissue (AT) derived pluripotent stem cells, termed Multilineage Differentiating Stress-Enduring (Muse) Cells, which are isolated using severe cellular stress conditions, including long-term exposure to the proteolytic enzyme collagenase, serum deprivation, low temperatures and hypoxia. Under these conditions, a highly purified population of Muse-AT cells is isolated without the utilization of cell sorting methods. Muse-AT cells grow in suspension as cell spheres reminiscent of embryonic stem cell clusters. Muse-AT cells are positive for the pluripotency markers SSEA3, TR-1-60, Oct3/4, Nanog and Sox2, and can spontaneously differentiate into mesenchymal, endodermal and ectodermal cell lineages with an efficiency of 23%, 20% and 22%, respectively. When using specific differentiation media, differentiation efficiency is greatly enhanced in Muse-AT cells (82% for mesenchymal, 75% for endodermal and 78% for ectodermal). When compared to adipose stem cells (ASCs), microarray data indicate a substantial up-regulation of Sox2, Oct3/4, and Rex1. Muse-ATs also exhibit gene expression patterns associated with the down-regulation of genes involved in cell death and survival, embryonic development, DNA replication and repair, cell cycle and potential factors related to oncogenecity. Gene expression analysis indicates that Muse-ATs and ASCs are mesenchymal in origin; however, Muse-ATs also express numerous lymphocytic and hematopoietic genes, such as CCR1 and CXCL2, encoding chemokine receptors and ligands involved in stem cell homing. Being highly resistant to severe cellular stress, Muse-AT cells have the potential to make a critical impact on the field of regenerative medicine and cell-based therapy.
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Affiliation(s)
- Saleh Heneidi
- Department of Pharmacology and Physiology, Georgetown University Medical Center, Washington, District of Columbia, United States of America
| | - Ariel A. Simerman
- Department of Obstetrics and Gynecology, David Geffen School of Medicine at University of Los Angeles, Los Angeles, California, United States of America
| | - Erica Keller
- Department of Obstetrics and Gynecology, David Geffen School of Medicine at University of Los Angeles, Los Angeles, California, United States of America
| | - Prapti Singh
- Department of Obstetrics and Gynecology, David Geffen School of Medicine at University of Los Angeles, Los Angeles, California, United States of America
| | - Xinmin Li
- Clinical Microarray Core, David Geffen School of Medicine at University of Los Angeles, Los Angeles, California, United States of America
| | - Daniel A. Dumesic
- Department of Obstetrics and Gynecology, David Geffen School of Medicine at University of Los Angeles, Los Angeles, California, United States of America
| | - Gregorio Chazenbalk
- Department of Obstetrics and Gynecology, David Geffen School of Medicine at University of Los Angeles, Los Angeles, California, United States of America
- * E-mail:
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460
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Shim G, Im S, Lee S, Park JY, Kim J, Jin H, Lee S, Im I, Kim DD, Kim SW, Lee TJ, Eom JS, Yi TG, Song SU, Byun Y, Oh YK. Enhanced survival of transplanted human adipose-derived stem cells by co-delivery with liposomal apoptosome inhibitor in fibrin gel matrix. Eur J Pharm Biopharm 2013; 85:673-81. [PMID: 23747743 DOI: 10.1016/j.ejpb.2013.05.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Revised: 05/10/2013] [Accepted: 05/22/2013] [Indexed: 12/18/2022]
Abstract
To improve the survival of transplanted human adipose-derived stem cells (ADSCs), a liposome preparation containing the apoptosome inhibitor, NS3694, was formulated and co-delivered with ADSCs in fibrin gel scaffolds. Liposomes provided enhanced effect on ADSC proliferation in vitro as compared to free drug. Exposure of ADSCs to liposomal NS3694 for 7 days did not affect the surface marker expression profile. NS3694 encapsulated in negatively charged liposomes composed of phosphatidylcholine, phosphatidylglycerol, and cholesterol was evaluated in vivo following subcutaneous transplantation in mice. Survival of ADSCs co-delivered with liposomal NS3694 was significantly higher than that of untreated ADSCs or ADSCs treated with free NS3694 or empty liposomes. An immunohistochemical analysis revealed a higher number of human nucleus-positive cells after treatment with liposomal NS3694 than following treatment with free NS3694. Similarly, liposomal NS3694 significantly enhanced survival of transplanted ADSCs in rabbits compared to other treatments. Taken together, our results indicate the potential of liposomal NS3694 co-delivered with ADSCs using fibrin gel systems as an in vivo-survival enhancer.
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Affiliation(s)
- Gayong Shim
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
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461
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The role of paracrine and autocrine signaling in the early phase of adipogenic differentiation of adipose-derived stem cells. PLoS One 2013; 8:e63638. [PMID: 23723991 PMCID: PMC3665830 DOI: 10.1371/journal.pone.0063638] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Accepted: 04/04/2013] [Indexed: 01/01/2023] Open
Abstract
Introduction High cell density is known to enhance adipogenic differentiation of mesenchymal stem cells, suggesting secretion of signaling factors or cell-contact-mediated signaling. By employing microfluidic biochip technology, we have been able to separate these two processes and study the secretion pathways. Methods and results Adipogenic differentiation of human adipose-derived stem cells (ASCs) cultured in a microfluidic system was investigated under perfusion conditions with an adipogenic medium or an adipogenic medium supplemented with supernatant from differentiating ASCs (conditioned medium). Conditioned medium increased adipogenic differentiation compared to adipogenic medium with respect to accumulation of lipid-filled vacuoles and gene expression of key adipogenic markers (C/EBPα, C/EBPβ, C/EBPδ, PPARγ, LPL and adiponectin). The positive effects of conditioned medium were observed early in the differentiation process. Conclusions Using different cell densities and microfluidic perfusion cell cultures to suppress the effects of cell-released factors, we have demonstrated the significant role played by auto- or paracrine signaling in adipocyte differentiation. The cell-released factor(s) were shown to act in the recruitment phase of the differentiation process.
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462
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Conditioned serum-free medium from umbilical cord mesenchymal stem cells has anti-photoaging properties. Biotechnol Lett 2013; 35:1707-14. [PMID: 23690049 DOI: 10.1007/s10529-013-1242-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Accepted: 05/10/2013] [Indexed: 10/26/2022]
Abstract
Chronic exposure to solar radiation is the primary cause of photoaging and benign and malignant skin tumors. A conditioned serum-free medium (SFM) was prepared from umbilical cord mesenchymal stem cells (UC-MSCs) and its anti-photoaging effect, following chronic UV irradiation in vitro and in vivo, was evaluated. UC-MSC SFM had a stimulatory effect on human dermal fibroblast proliferation and reduced UVA-induced cell death. In addition, UC-MSC SFM blocked UVA inhibition of superoxide dismutase activity. Topical application of UC-MSC SFM to mouse skin prior to UV irradiation blocked the inhibition of superoxide dismutase and glutathione peroxidase activities, and prevented the upregulation of malonaldehyde. UC-MSC SFM thus protects against photoaging induced by UVA and UVB radiation and is a promising candidate for skin anti-photoaging treatments.
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463
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Wen Z, Liao Q, Hu Y, Liu S, You L, Zhao Y. Human adipose-derived stromal/stem cells: A novel approach to inhibiting acute pancreatitis. Med Hypotheses 2013; 80:598-600. [DOI: 10.1016/j.mehy.2013.01.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Accepted: 01/27/2013] [Indexed: 11/24/2022]
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464
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Abstract
Type 1 diabetes mellitus (T1D) is a chronic, multifactorial autoimmune disease that involves the progressive destruction of pancreatic β-cells, ultimately resulting in the loss of insulin production and secretion. The goal of clinical intervention is to prevent or arrest the onset and progression of autoimmunity, reverse β-cell destruction, and restore glycometabolic and immune homeostasis. Despite promising outcomes observed with islet transplantation and advancements in immunomodulatory therapies, the need for an effective cell replacement strategy for curing T1D still persists. Stem cell therapy offers a solution to the cited challenges of islet transplantation. While the regenerative potential of stem cells can be harnessed to make available a self-replenishing supply of glucose-responsive insulin-producing cells, their immunomodulatory properties may potentially be used to prevent, arrest, or reverse autoimmunity, ameliorate innate/alloimmune graft rejection, and prevent recurrence of the disease. Herein, we discuss the therapeutic potential of stem cells derived from a variety of sources for the cure of T1D, for example, embryonic stem cells, induced pluripotent stem cells, bone marrow-derived hematopoietic stem cells, and multipotent mesenchymal stromal cells derived from bone marrow, umbilical cord blood, and adipose tissue. The benefits of combinatorial approaches designed to ensure the successful clinical translation of stem cell therapeutic strategies, such as approaches combining effective stem cell strategies with islet transplantation, immunomodulatory drug regimens, and/or novel bioengineering techniques, are also discussed. To conclude, the application of stem cell therapy in the cure for T1D appears extremely promising.
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Affiliation(s)
- Preeti Chhabra
- Department of Surgery, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Kenneth L. Brayman
- Department of Surgery, University of Virginia School of Medicine, Charlottesville, Virginia, USA
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465
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Lin HT, Otsu M, Nakauchi H. Stem cell therapy: an exercise in patience and prudence. Philos Trans R Soc Lond B Biol Sci 2013; 368:20110334. [PMID: 23166396 DOI: 10.1098/rstb.2011.0334] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
In recent times, the epigenetic study of pluripotency based on cellular reprogramming techniques led to the creation of induced pluripotent stem cells. It has come to represent the forefront of a new wave of alternative therapeutic approaches in the field of stem cell therapy. Progress in drug development has saved countless lives, but there are numerous intractable diseases where curative treatment cannot be achieved through pharmacological intervention alone. Consequently, there has been an unfortunate rise in incidences of organ failures, degenerative disorders and cancers, hence novel therapeutic interventions are required. Stem cells have unique self-renewal and multilineage differentiation capabilities that could be harnessed for therapeutic purposes. Although a number of mature differentiated cells have been characterized in vitro, few have been demonstrated to function in a physiologically relevant context. Despite fervent levels of enthusiasm in the field, the reality is that other than the employment of haematopoietic stem cells, many other therapies have yet to be thoroughly proven for their therapeutic benefit and safety in application. This review shall focus on a discussion regarding the current status of stem cell therapy, the issues surrounding it and its future prospects with a general background on the regulatory networks underlying pluripotency.
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Affiliation(s)
- Huan-Ting Lin
- Center for Stem Cell Biology and Regenerative Medicine, IMSUT, 4-6-1 Shirokanedai Minato-ku, Tokyo, 108-8639, Japan
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466
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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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467
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González-Cruz RD, Darling EM. Adipose-derived stem cell fate is predicted by cellular mechanical properties. Adipocyte 2013; 2:87-91. [PMID: 23805404 PMCID: PMC3661107 DOI: 10.4161/adip.23015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 11/26/2012] [Accepted: 11/27/2012] [Indexed: 12/22/2022] Open
Abstract
Adipose-derived stem cells (ASCs) show great promise for tissue engineering applications and cell-based therapies because of their multipotency, relative abundance and immunosuppressive properties. However, ASCs must be isolated from heterogeneous cell populations present in adipose tissue. In this brief report, we provide a concise summary of the history and use of cellular mechanical properties as novel, label-free biomarkers to predict the differentiation potential of ASCs toward adipogenic, osteogenic and chondrogenic lineages. Additionally, we have found that passage number influences the mechanical properties of ASCs along with a discussion of potential environmental factors that could affect these properties. Altogether, this report provides evidence for the reliability of cellular mechanical properties as biomarkers for ASC differentiation potential and outlines how they can be used to sort ASCs with lineage-specific preferences for particular applications.
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468
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Stem cell therapy for lower extremity diabetic ulcers: where do we stand? BIOMED RESEARCH INTERNATIONAL 2013; 2013:462179. [PMID: 23586040 PMCID: PMC3613085 DOI: 10.1155/2013/462179] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 02/03/2013] [Accepted: 02/04/2013] [Indexed: 12/17/2022]
Abstract
The impairment of wound healing in diabetic patients is an important clinical problem affecting millions of patients worldwide. Various clinical and basic science studies show that stem cell therapy, as a regenerative medical therapy, can be a good solution. In this paper, we begin with an introduction of the cellular mechanism of the diabetic ulcer. We will then discuss the advantages and limitations of various stem cell therapies that have been under extensive recent study.
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469
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Fan W, Li C, Qin X, Wang S, Da H, Cheng K, Zhou R, Tong C, Li X, Bu Q, Li C, Han Y, Ren J, Cao F. Adipose stromal cell and sarpogrelate orchestrate the recovery of inflammation-induced angiogenesis in aged hindlimb ischemic mice. Aging Cell 2013; 12:32-41. [PMID: 23045959 DOI: 10.1111/acel.12014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/30/2012] [Indexed: 01/20/2023] Open
Abstract
Aging population displays a much higher risk of peripheral arterial disease (PAD) possibly due to the higher susceptibility, poor prognosis, and fewer therapeutic options. This study was designed to examine the impact of combined multipotent adipose-derived stromal cells (mADSCs) and sarpogrelate treatment on aging hindlimb ischemia and the mechanism of action involved. mADSCs (1.0 × 10(7)) constitutively expressing enhanced green fluorescent protein (eGFP) or firefly luciferase (Fluc) reporter were engrafted into the hindlimb of aged Vegfr2-luc transgenic or FVB/N mice subjected to unilateral femoral artery occlusion, followed by a further administration of sarpogrelate. Multimodality molecular imaging was employed to noninvasively evaluate mADSCs' survival and therapeutic efficacy against aging hindlimb ischemia. Aged Tg(Vegfr2-luc) mice exhibited decreased inflammatory response, and downregulation of vascular endothelial growth factor (VEGF)/vascular endothelial growth factor receptor-2 (VEGFR2) compared with young ones following hindlimb ischemia induction, resulting in angiogenesis insufficiency and decompensation for ischemia recovery. Engrafted mADSCs augmented inflammation-induced angiogenesis to yield pro-angiogenic/anti-apoptotic effects partly via the VEGF/VEGFR2/mTOR/STAT3 pathway. Nonetheless, mADSCs displayed limited survival and efficacy following transplantation. Sarpogrelate treatment with mADSCs further upregulated mammalian target of rapamycin (mTOR)/STAT3 signal and modulated pro-/anti-inflammatory markers including IL-1β/TNF-α/IFN-γ and IL-6/IL-10, which ultimately facilitated mADSCs' survival and therapeutic benefit in vivo. Sarpogrelate prevented mADSCs from hypoxia/reoxygenation-induced cell death via a mTOR/STAT3-dependent pathway in vitro. This study demonstrated a role of in vivo kinetics of VEGFR2 as a biomarker to evaluate cell-derived therapeutic angiogenesis in aging. mADSCs and sarpogrelate synergistically restored impaired angiogenesis and inflammation modulatory capacity in aged hindlimb ischemic mice, indicating its therapeutic promise for PAD in the elderly.
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Affiliation(s)
| | - Chengxiang Li
- Department of Cardiology & Molecular Imaging Program; Xijing Hospital; Fourth Military Medical University; Xi'an; Shaanxi; 710032; China
| | - Xing Qin
- Department of Cardiology & Molecular Imaging Program; Xijing Hospital; Fourth Military Medical University; Xi'an; Shaanxi; 710032; China
| | - Shenxu Wang
- Department of Cardiology & Molecular Imaging Program; Xijing Hospital; Fourth Military Medical University; Xi'an; Shaanxi; 710032; China
| | - Hu Da
- Institute of Orthopaedics and Traumatology; Xijing Hospital; Fourth Military Medical University; Xi'an; Shaanxi; 710032; China
| | - Kang Cheng
- Department of Cardiology & Molecular Imaging Program; Xijing Hospital; Fourth Military Medical University; Xi'an; Shaanxi; 710032; China
| | - Ri Zhou
- Institute of Orthopaedics and Traumatology; Xijing Hospital; Fourth Military Medical University; Xi'an; Shaanxi; 710032; China
| | - Chao Tong
- State Key Laboratory of Cancer Biology; Institute of Digestive Diseases; Xijing Hospital; Fourth Military Medical University; Xi'an; Shaanxi; 710032; China
| | - Xiujuan Li
- Department of Cardiology & Molecular Imaging Program; Xijing Hospital; Fourth Military Medical University; Xi'an; Shaanxi; 710032; China
| | - Qingting Bu
- Department of Cardiology & Molecular Imaging Program; Xijing Hospital; Fourth Military Medical University; Xi'an; Shaanxi; 710032; China
| | - Congye Li
- Department of Cardiology & Molecular Imaging Program; Xijing Hospital; Fourth Military Medical University; Xi'an; Shaanxi; 710032; China
| | - Yaling Han
- Department of Cardiology; Shenyang Northern Hospital; Shenyang; 110016; China
| | | | - Feng Cao
- Department of Cardiology & Molecular Imaging Program; Xijing Hospital; Fourth Military Medical University; Xi'an; Shaanxi; 710032; China
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470
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Hong SJ, Jia SX, Xie P, Xu W, Leung KP, Mustoe TA, Galiano RD. Topically delivered adipose derived stem cells show an activated-fibroblast phenotype and enhance granulation tissue formation in skin wounds. PLoS One 2013; 8:e55640. [PMID: 23383253 PMCID: PMC3561304 DOI: 10.1371/journal.pone.0055640] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Accepted: 12/28/2012] [Indexed: 12/14/2022] Open
Abstract
Multipotent mesenchymal stem cells (MSCs) are found in various tissues and can proliferate extensively in vitro. MSCs have been used in preclinical animal studies and clinical trials in many fields. Adipose derived stem cells (ASCs) have several advantages compared to other MSCs for use in cell-based treatments because they are easy to isolate with relative abundance. However, quantitative approaches for wound repair using ASCs have been limited because of lack of animal models which allow for quantification. Here, we addressed the effect of topically delivered ASCs in wound repair by quantitative analysis using the rabbit ear model. We characterized rabbit ASCs, and analyzed their multipotency in comparison to bone marrow derived-MSCs (BM-MSCs) and dermal fibroblasts (DFs) in vitro. Topically delivered ASCs increased granulation tissue formation in wounds when compared to saline controls, whereas BM-MSCs or DFs did not. These studies suggest that ASCs and BM-MSCs are not identical, though they have similar surface markers. We found that topically delivered ASCs are engrafted and proliferate in the wounds. We showed that transplanted ASCs exhibited activated fibroblast phenotype, increased endothelial cell recruitment, and enhanced macrophage recruitment in vivo.
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Affiliation(s)
- Seok Jong Hong
- Department of Surgery/Division of Plastic and Reconstructive Surgery, Laboratory for Wound Repair and Regenerative Medicine, Feinberg School of Medicine,Northwestern University, Chicago, Illinois, United States of America
- * E-mail: (SJH); (RG)
| | - Sheng-Xian Jia
- Department of Surgery/Division of Plastic and Reconstructive Surgery, Laboratory for Wound Repair and Regenerative Medicine, Feinberg School of Medicine,Northwestern University, Chicago, Illinois, United States of America
| | - Ping Xie
- Department of Surgery/Division of Plastic and Reconstructive Surgery, Laboratory for Wound Repair and Regenerative Medicine, Feinberg School of Medicine,Northwestern University, Chicago, Illinois, United States of America
| | - Wei Xu
- Department of Surgery/Division of Plastic and Reconstructive Surgery, Laboratory for Wound Repair and Regenerative Medicine, Feinberg School of Medicine,Northwestern University, Chicago, Illinois, United States of America
| | - Kai P. Leung
- Microbiology Branch, US Army Dental and Trauma Research Detachment, Institute of Surgical Research, Fort Sam Houston, Texas, United States of America
| | - Thomas A. Mustoe
- Department of Surgery/Division of Plastic and Reconstructive Surgery, Laboratory for Wound Repair and Regenerative Medicine, Feinberg School of Medicine,Northwestern University, Chicago, Illinois, United States of America
| | - Robert D. Galiano
- Department of Surgery/Division of Plastic and Reconstructive Surgery, Laboratory for Wound Repair and Regenerative Medicine, Feinberg School of Medicine,Northwestern University, Chicago, Illinois, United States of America
- * E-mail: (SJH); (RG)
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471
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Ikegame Y. Among mesenchymal stem cells: for the best therapy after ischemic stroke. Stem Cell Res Ther 2013; 4:9. [PMID: 23369760 PMCID: PMC3706949 DOI: 10.1186/scrt157] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Owing to the several advantages that they have over other cells, mesenchymal stem cells are among the most promising tools in stem cell therapy after ischemic stroke. Mesenchymal stem cells can be obtained from various sources. Therefore, a wide range of careful comparative studies of these cells is required, from the preclinical stage (in vitro and in vivo) to the clinical stage, in order to develop the best therapy with the most appropriate cell type. An in vivo study in this issue of Stem Cell Research & Therapy compares the therapeutic potential of two cell types, obtained from bone marrow and adipose tissue, in a rodent stroke model. This commentary discusses the significance of comparative studies of mesenchymal stem cells, including the related article in translational research.
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472
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Desando G, Cavallo C, Sartoni F, Martini L, Parrilli A, Veronesi F, Fini M, Giardino R, Facchini A, Grigolo B. Intra-articular delivery of adipose derived stromal cells attenuates osteoarthritis progression in an experimental rabbit model. Arthritis Res Ther 2013; 15:R22. [PMID: 23360790 PMCID: PMC3672720 DOI: 10.1186/ar4156] [Citation(s) in RCA: 151] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Accepted: 01/28/2013] [Indexed: 12/13/2022] Open
Abstract
Introduction Cell therapy is a rapidly growing area of research for the treatment of osteoarthritis (OA). This work is aimed to investigate the efficacy of intra-articular adipose-derived stromal cell (ASC) injection in the healing process on cartilage, synovial membrane and menisci in an experimental rabbit model. Methods The induction of OA was performed surgically through bilateral anterior cruciate ligament transection (ACLT) to achieve eight weeks from ACLT a mild grade of OA. A total of 2 × 106 and 6 × 106 autologous ASCs isolated from inguinal fat, expanded in vitro and suspended in 4% rabbit serum albumin (RSA) were delivered in the hind limbs; 4% RSA was used as the control. Local bio-distribution of the cells was verified by injecting chloro-methyl-benzamido-1,1'-dioctadecyl-3,3,3'3'-tetra-methyl-indo-carbocyanine per-chlorate (CM-Dil) labeled ASCs in the hind limbs. Cartilage and synovial histological sections were scored by Laverty's scoring system to assess the severity of the pathology. Protein expression of some extracellular matrix molecules (collagen I and II), catabolic (metalloproteinase-1 and -3) and inflammatory (tumor necrosis factor- α) markers were detected by immunohistochemistry. Assessments were carried out at 16 and 24 weeks. Results Labeled-ASCs were detected unexpectedly in the synovial membrane and medial meniscus but not in cartilage tissue at 3 and 20 days from ASC-treatment. Intra-articular ASC administration decreases OA progression and exerts a healing contribution in the treated animals in comparison to OA and 4% RSA groups. Conclusions Our data reveal a healing capacity of ASCs in promoting cartilage and menisci repair and attenuating inflammatory events in synovial membrane inhibiting OA progression. On the basis of the local bio-distribution findings, the benefits obtained by ASC treatment could be due to a trophic mechanism of action by the release of growth factors and cytokines.
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473
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James AW. Review of Signaling Pathways Governing MSC Osteogenic and Adipogenic Differentiation. SCIENTIFICA 2013; 2013:684736. [PMID: 24416618 PMCID: PMC3874981 DOI: 10.1155/2013/684736] [Citation(s) in RCA: 302] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 11/21/2013] [Indexed: 05/07/2023]
Abstract
Mesenchymal stem cells (MSC) are multipotent cells, functioning as precursors to a variety of cell types including adipocytes, osteoblasts, and chondrocytes. Between osteogenic and adipogenic lineage commitment and differentiation, a theoretical inverse relationship exists, such that differentiation towards an osteoblast phenotype occurs at the expense of an adipocytic phenotype. This balance is regulated by numerous, intersecting signaling pathways that converge on the regulation of two main transcription factors: peroxisome proliferator-activated receptor- γ (PPAR γ ) and Runt-related transcription factor 2 (Runx2). These two transcription factors, PPAR γ and Runx2, are generally regarded as the master regulators of adipogenesis and osteogenesis. This review will summarize signaling pathways that govern MSC fate towards osteogenic or adipocytic differentiation. A number of signaling pathways follow the inverse balance between osteogenic and adipogenic differentiation and are generally proosteogenic/antiadipogenic stimuli. These include β -catenin dependent Wnt signaling, Hedgehog signaling, and NELL-1 signaling. However, other signaling pathways exhibit more context-dependent effects on adipogenic and osteogenic differentiation. These include bone morphogenic protein (BMP) signaling and insulin growth factor (IGF) signaling, which display both proosteogenic and proadipogenic effects. In summary, understanding those factors that govern osteogenic versus adipogenic MSC differentiation has significant implications in diverse areas of human health, from obesity to osteoporosis to regenerative medicine.
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Affiliation(s)
- Aaron W. James
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, 10833 Le Conte Avenue, CHS A3-251, Los Angeles, CA 90077, USA
- *Aaron W. James:
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474
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Labusca L, Mashayekhi K. Adipose-derived stem cells for cartilage regeneration--moving towards clinical applicability. Stem Cell Res Ther 2013; 4:118. [PMID: 24079605 PMCID: PMC3854774 DOI: 10.1186/scrt329] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Despite multiple methods of treatment and a wealth of research in the field of regenerative medicine focusing on cartilage defects, the management of cartilage injuries remains a challenge. A recent study by Van Pham and colleagues proposes a method for preconditioning autologous adipose-derived stem cells. Their study offers evidence about the increased proliferative and chondrogenetic capabilities of platelet-rich plasma-treated adipose-derived stem cells and the increased efficiency of these in treating articular cartilage defects in mice. Even though the method needs further elaboration and the composition of the repair tissue requires investigation, the results are promising for the design of clinically acceptable cell therapies aimed at cartilage regeneration.
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Affiliation(s)
- Luminita Labusca
- Department of Orthopedic Surgery, University Hospital Saint Spiridon, Iasi 700111, Romania
- SBIM Systems Bioinformatics and Modeling, GmbH, Basalt str. 39, D-60487, Frankfurt, Germany
| | - Kaveh Mashayekhi
- Department of Orthopedic Surgery, University Hospital Saint Spiridon, Iasi 700111, Romania
- SBIM Systems Bioinformatics and Modeling, GmbH, Basalt str. 39, D-60487, Frankfurt, Germany
- BioTalentum, Aulich Lajos str. 26, 2100, Gödöllő, Hungary
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475
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Bonomi A, Coccè V, Cavicchini L, Sisto F, Dossena M, Balzarini P, Portolani N, Ciusani E, Parati E, Alessandri G, Pessina A. Adipose Tissue-Derived Stromal Cells Primed in Vitro with Paclitaxel Acquire Anti-Tumor Activity. Int J Immunopathol Pharmacol 2013; 26:33-41. [DOI: 10.1177/03946320130260s105] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- A. Bonomi
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Italy
| | - V. Coccè
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Italy
| | - L. Cavicchini
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Italy
| | - F. Sisto
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Italy
| | - M. Dossena
- Cellular Neurobiology Laboratory, Department of Cerebrovascular Diseases; Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - P. Balzarini
- Second Department of Pathology, University of Brescia and Spedali Civili, Brescia, Italy
| | - N. Portolani
- Second Department of Pathology, University of Brescia and Spedali Civili, Brescia, Italy
| | - E. Ciusani
- Department of Diagnostics and Applied Technology, Fondazione IRCCS Neurological Institute Carlo Besta, Milan, Italy
| | - E. Parati
- Cellular Neurobiology Laboratory, Department of Cerebrovascular Diseases; Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - G. Alessandri
- Cellular Neurobiology Laboratory, Department of Cerebrovascular Diseases; Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - A. Pessina
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Italy
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476
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Stemness and Osteogenic and Adipogenic Potential are Differently Impaired in Subcutaneous and Visceral Adipose Derived Stem Cells (ASCs) Isolated from Obese Donors. Int J Immunopathol Pharmacol 2013; 26:11-21. [DOI: 10.1177/03946320130260s103] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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477
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Overview of micro- and nano-technology tools for stem cell applications: micropatterned and microelectronic devices. SENSORS 2012. [PMID: 23202240 PMCID: PMC3522993 DOI: 10.3390/s121115947] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
In the past few decades the scientific community has been recognizing the paramount role of the cell microenvironment in determining cell behavior. In parallel, the study of human stem cells for their potential therapeutic applications has been progressing constantly. The use of advanced technologies, enabling one to mimic the in vivo stem cell microenviroment and to study stem cell physiology and physio-pathology, in settings that better predict human cell biology, is becoming the object of much research effort. In this review we will detail the most relevant and recent advances in the field of biosensors and micro- and nano-technologies in general, highlighting advantages and disadvantages. Particular attention will be devoted to those applications employing stem cells as a sensing element.
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478
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Veronesi F, Giavaresi G, Tschon M, Borsari V, Nicoli Aldini N, Fini M. Clinical use of bone marrow, bone marrow concentrate, and expanded bone marrow mesenchymal stem cells in cartilage disease. Stem Cells Dev 2012; 22:181-92. [PMID: 23030230 DOI: 10.1089/scd.2012.0373] [Citation(s) in RCA: 110] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Mesenchymal stem cells (MSCs) from bone marrow (BM) are widely used for bone and less for cartilage tissue regeneration due to their self-renewal and differentiating properties into osteogenic or chondrogenic lineages. This review considers the last decade of clinical trials involving a two-step procedure, by expanding in vitro MSCs from BM, or the so called "one-step" procedure, using BM in toto or BM concentrate, for the regeneration of cartilage and osteochondral tissue defects. The following conclusions were drawn: (1) Cartilage defects that can be repaired by the two-step technique are about twice the size as those where the one-step method is used; (2) the two-step procedure is especially used for the treatment of osteoarthritic lesions, whereas the one-step procedure is used for osteochondral defects; (3) the number of transplanted cells ranges between 3.8×10(6) and 11.2×10(6) cells/mL, and the period of cell culture expansion of implanted MSCs varies widely with regard to the two-step procedure; (4) hyaluronic or collagenic scaffolds are used in all the clinical studies analyzed for both techniques; (5) the follow-up of the two-step procedure is longer than that of the one-step method, despite having a lower number of patients; and, finally, (6) the mean age of the patients (about 39 years old) is similar in both procedures. Clinical results underline the safety and good and encouraging outcomes for the use of MSCs in clinics. Although more standardized procedures are required, the length of follow-up and the number of patients observed should be augmented, and the design of trials should be implemented to achieve evidence-based results.
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Affiliation(s)
- Francesca Veronesi
- Laboratory of Preclinical and Surgical Studies, Rizzoli Orthopedic Institute, Via Di Barbiano 1/10, Bologna, Italy
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479
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Oldershaw RA. Cell sources for the regeneration of articular cartilage: the past, the horizon and the future. Int J Exp Pathol 2012; 93:389-400. [PMID: 23075006 DOI: 10.1111/j.1365-2613.2012.00837.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Accepted: 06/15/2012] [Indexed: 11/29/2022] Open
Abstract
Avascular, aneural articular cartilage has a low capacity for self-repair and as a consequence is highly susceptible to degradative diseases such as osteoarthritis. Thus the development of cell-based therapies that repair focal defects in otherwise healthy articular cartilage is an important research target, aiming both to delay the onset of degradative diseases and to decrease the need for joint replacement surgery. This review will discuss the cell sources which are currently being investigated for the generation of chondrogenic cells. Autologous chondrocyte implantation using chondrocytes expanded ex vivo was the first chondrogenic cellular therapy to be used clinically. However, limitations in expansion potential have led to the investigation of adult mesenchymal stem cells as an alternative cell source and these therapies are beginning to enter clinical trials. The chondrogenic potential of human embryonic stem cells will also be discussed as a developmentally relevant cell source, which has the potential to generate chondrocytes with phenotype closer to that of articular cartilage. The clinical application of these chondrogenic cells is much further away as protocols and tissue engineering strategies require additional optimization. The efficacy of these cell types in the regeneration of articular cartilage tissue that is capable of withstanding biomechanical loading will be evaluated according to the developing regulatory framework to determine the most appropriate cellular therapy for adoption across an expanding patient population.
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Affiliation(s)
- Rachel A Oldershaw
- North East England Stem Cell Institute (NESCI), Institute of Cellular Medicine, Newcastle University, International Centre for Life, Newcastle upon Tyne, UK.
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480
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Fan W, Sun D, Liu J, Liang D, Wang Y, Narsinh KH, Li Y, Qin X, Liang J, Tian J, Cao F. Adipose stromal cells amplify angiogenic signaling via the VEGF/mTOR/Akt pathway in a murine hindlimb ischemia model: a 3D multimodality imaging study. PLoS One 2012; 7:e45621. [PMID: 23029141 PMCID: PMC3447795 DOI: 10.1371/journal.pone.0045621] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Accepted: 08/20/2012] [Indexed: 01/24/2023] Open
Abstract
Although adipose-derived stromal cell (ADSC) transplantation has been demonstrated as a promising therapeutic strategy for peripheral arterial disease (PAD), the mechanism of action behind the observed therapeutic efficacy of ADSCs remains unclear. This study was designed to investigate the long-term outcome and therapeutic behavior of engrafted ADSCs in a murine hindlimb ischemia model using multimodality molecular imaging approaches. ADSCs (1.0×107) were isolated from Tg(Fluc-egfp) mice which constitutively express dual-reporter firefly luciferase and enhanced green fluorescent protein (Fluc+-eGFP+, mADSCsFluc+GFP+), then intramuscularly injected into the hindlimb of BALB/c-nu mice after unilateral femoral artery ligation and excision. Abbreviated survival (∼5 weeks) of post-transplant mADSCs within the ischemic hindlimb was longitudinally monitored using noninvasive bioluminescence imaging (BLI), fluorescence imaging (FRI), and bioluminescence tomography with micro-computed tomography (BLT/micro-CT). Use of the BLT/micro-CT system enabled quantitative 3-dimensional (3D) imaging of the cells’ distribution and kinetics in vivo. Engrafted mADSCs improved blood perfusion recovery, ambulatory performance and prognosis of the ischemic hindlimb, probably by inducing angiogenesis and formation of collateral vessels, which could be visualized using laser Doppler perfusion imaging (LDPI), micro-CT angiography, vascular-cast imaging, and immunofluorescence. mADSCs augmented activation of the pro-angiogenic VEGF/mTOR/Akt pathway in vivo, even though the cells failed to incorporate into the host microvasculature as functional components. Downregulation of VEGF/mTOR/Akt signaling using small molecule inhibitors counteracted mADSC-induced angiogenesis and perfusion restoration. This study demonstrates for the first time the spatiotemporal kinetics and functional survival of transplanted mADSCs in a PAD model using in vivo 3D multimodality imaging. Our study indicates that mADSCs potentiate pro-angiogenic signal amplification via a VEGF/mTOR/Akt-dependent pathway, and thereby promote recovery from hindlimb ischemia.
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Affiliation(s)
- Weiwei Fan
- Department of Cardiology & Molecular Imaging Program, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Dongdong Sun
- Department of Cardiology & Molecular Imaging Program, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Junting Liu
- Life Sciences Research Center, School of Life Sciences and Technology, Xidian University, Xi’an, Shaanxi, China
| | - Dong Liang
- Department of Cardiology & Molecular Imaging Program, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Yabin Wang
- Department of Cardiology & Molecular Imaging Program, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Kazim H. Narsinh
- Department of Radiology & Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, California, United States of America
| | - Yong Li
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Xing Qin
- Department of Cardiology & Molecular Imaging Program, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Jimin Liang
- Life Sciences Research Center, School of Life Sciences and Technology, Xidian University, Xi’an, Shaanxi, China
| | - Jie Tian
- Life Sciences Research Center, School of Life Sciences and Technology, Xidian University, Xi’an, Shaanxi, China
- * E-mail: (FC); (JT)
| | - Feng Cao
- Department of Cardiology & Molecular Imaging Program, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
- * E-mail: (FC); (JT)
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481
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Stem cells as a tool to improve outcomes of islet transplantation. J Transplant 2012; 2012:736491. [PMID: 22970344 PMCID: PMC3437295 DOI: 10.1155/2012/736491] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Accepted: 07/02/2012] [Indexed: 12/24/2022] Open
Abstract
The publication of the promising results of the Edmonton protocol in 2000 generated optimism for islet transplantation as a potential cure for Type 1 Diabetes Mellitus. Unfortunately, follow-up data revealed that less than 10% of patients achieved long-term insulin independence. More recent data from other large trials like the Collaborative Islet Transplant Registry show incremental improvement with 44% of islet transplant recipients maintaining insulin independence at three years of follow-up. Multiple underlying issues have been identified that contribute to islet graft failure, and newer research has attempted to address these problems. Stem cells have been utilized not only as a functional replacement for β cells, but also as companion or supportive cells to address a variety of different obstacles that prevent ideal graft viability and function. In this paper, we outline the manners in which stem cells have been applied to address barriers to the achievement of long-term insulin independence following islet transplantation.
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482
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Zhao W, Ren G, Zhang L, Zhang Z, Liu J, Kuang P, Yin Z, Wang X. Efficacy of mesenchymal stem cells derived from human adipose tissue in inhibition of hepatocellular carcinoma cells in vitro. Cancer Biother Radiopharm 2012; 27:606-13. [PMID: 22917212 DOI: 10.1089/cbr.2011.1150] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is often diagnosed at an advanced stage, and over the past several decades, many researchers have worked to develop novel effective therapies for HCC patients. The functional contributions of mesenchymal stem cells to human malignancies, including HCC growth and progression, are controversial, and the potential mechanisms underlying these effects are not clear. The aim of this study was to investigate the effect of adipose-derived mesenchymal stem cells (ADSCs) on the growth of HCC cells. In this study, a conditioned medium from ADSCs (ADSC-CM) efficiently inhibited HCC cell proliferation and division, and induced HCC cell death through the downregulation of Akt signaling. These findings indicated that the ADSC-CM could inhibit HCC growth. Thus, the ADSC-CM is a good candidate for the treatment of HCC patients for whom no effective therapy is available.
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Affiliation(s)
- Wenxiu Zhao
- Department of Hepatobiliary Surgery, Zhongshan Hospital, Xiamen University, China
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483
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Brüning A, Mylonas I. Cbfa1/Runx2-transduced adult adipose stem cells on biodegradable scaffolds for segmental bone defect repair. J Surg Res 2012; 185:e67-8. [PMID: 22795274 DOI: 10.1016/j.jss.2012.06.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 06/19/2012] [Accepted: 06/21/2012] [Indexed: 11/17/2022]
Affiliation(s)
- Ansgar Brüning
- Department of Obstetrics and Gynecology, Campus Innenstadt, Ludwig-Maximilians-University, Munich, Germany
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484
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Egusa H, Sonoyama W, Nishimura M, Atsuta I, Akiyama K. Stem cells in dentistry--part I: stem cell sources. J Prosthodont Res 2012; 56:151-65. [PMID: 22796367 DOI: 10.1016/j.jpor.2012.06.001] [Citation(s) in RCA: 213] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Accepted: 06/14/2012] [Indexed: 12/21/2022]
Abstract
Stem cells can self-renew and produce different cell types, thus providing new strategies to regenerate missing tissues and treat diseases. In the field of dentistry, adult mesenchymal stem/stromal cells (MSCs) have been identified in several oral and maxillofacial tissues, which suggests that the oral tissues are a rich source of stem cells, and oral stem and mucosal cells are expected to provide an ideal source for genetically reprogrammed cells such as induced pluripotent stem (iPS) cells. Furthermore, oral tissues are expected to be not only a source but also a therapeutic target for stem cells, as stem cell and tissue engineering therapies in dentistry continue to attract increasing clinical interest. Part I of this review outlines various types of intra- and extra-oral tissue-derived stem cells with regard to clinical availability and applications in dentistry. Additionally, appropriate sources of stem cells for regenerative dentistry are discussed with regard to differentiation capacity, accessibility and possible immunomodulatory properties.
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Affiliation(s)
- Hiroshi Egusa
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka 565-0871, Japan.
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485
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Senoo M. Bridging Stem Cell Research from Humans to Animals. JOURNAL OF VETERINARY SCIENCE & MEDICAL DIAGNOSIS 2012; 1. [PMID: 23789117 DOI: 10.4172/jvsmd.1000e102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Makoto Senoo
- University of Pennsylvania School of Veterinary Medicine, USA
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