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Pedro Wey Barbosa de Oliveira, Rogério Pezato, Juan Sebastian Henao Agudelo, Claudina Angela Perez-Novo, Wim Vanden Berghe, Niels Olsen Câmara, Danilo Candido de Almeida, Luís Carlos Gregorio
Mesenchymal stromal cells (MSCs) are considered adult progenitor stem cells and have been studied in a multitude of tissues. In this context, the microenvironment of nasal polyp tissue has several inflammatory cells, but their stroma compartment remains little elucidated. Hence, we isolated MSCs from nasal polyps Polyp-MSCs (PO-MSCs) and compared their molecular features and gene expression pattern with bone marrow-derived MSCs (BM-MSCs). Initially, both PO-MSCs and BM-MSCs were isolated, cultivated, and submitted to morphologic, differentiation, phenotypic, immunosuppressive, and gene expression assays...
2017: Frontiers in Immunology
Chen Chen, Jun Liang, Genhong Yao, Haifeng Chen, Bingyu Shi, Zhuoya Zhang, Cheng Zhao, Huayong Zhang, Lingyun Sun
BACKGROUND: Soluble human leukocyte antigen-G (sHLA-G) is a non-classical HLA class I molecule, exhibiting strong immunosuppressive properties by inducing the differentiation of T regulatory cells (Treg). Mesenchymal stem cells (MSCs) transplantation alleviates disease progression in systemic lupus erythematosus (SLE) patients. However, the underlying mechanisms are largely unknown. OBJECTIVES: To explore whether sHLA-G is involved in upregulating effects of MSCs on Treg, which contributes to therapeutic effects of MSCs transplantation in SLE...
March 2017: International Immunopharmacology
B Issaranggun Na Ayuthaya, P Satravaha, P Pavasant
BACKGROUND AND OBJECTIVE: The cytokine interleukin 12 (IL-12) has been implicated as a potent stimulator of tissue degradation in the pathogenesis of several inflammatory diseases, including periodontitis. In patients with periodontitis, an increased level of IL-12 is found in serum and gingival crevicular fluid. As inflammatory cytokines have been demonstrated to induce activation of the immunomodulatory properties of mesenchymal stem cells (MSCs), this study aimed to investigate the influence of IL-12 on these properties in human periodontal ligament (hPDL) cells...
June 2017: Journal of Periodontal Research
Wen-Jing Du, Loic Reppel, Léonore Leger, Chantal Schenowitz, Celine Huselstein, Danièle Bensoussan, Edgardo D Carosella, Zhong-Chao Han, Nathalie Rouas-Freiss
Mesenchymal stem cells (MSC) have emerged as alternative sources of stem cells for regenerative medicine because of their multipotency and strong immune-regulatory properties. Also, human leukocyte antigen G (HLA-G) is an important mediator of MSC-mediated immunomodulation. However, it is unclear whether MSC retain their immune-privileged potential after differentiation. As promising candidates for cartilage tissue engineering, the immunogenic and immunomodulatory properties of chondro-differentiated MSC (chondro-MSC) require in-depth exploration...
October 1, 2016: Stem Cells and Development
Vera Rebmann, Lisa König, Fabiola da Silva Nardi, Bettina Wagner, Luis Felipe Santos Manvailer, Peter A Horn
The HLA-G molecule is a member of the non-classical HLA class I family. Its surface expression is physiologically restricted to the maternal-fetal interface and to immune privileged adult tissues. Despite the restricted tissue expression, HLA-G is detectable in body fluids as secreted soluble molecules. A unique feature of HLA-G is the structural diversity as surface expressed and as secreted molecules. Secreted HLA-G can be found in various body fluids either as free soluble HLA-G or as part of extracellular vesicles (EVs), which are composed of various antigens/ligands/receptors, bioactive lipids, cytokines, growth factors, and genetic information, such as mRNA and microRNA...
2016: Frontiers in Immunology
Rachele Ciccocioppo, Giuseppina C Cangemi, Peter Kruzliak, Alessandra Gallia, Elena Betti, Carla Badulli, Miryam Martinetti, Marila Cervio, Alessandro Pecci, Valeria Bozzi, Paolo Dionigi, Livia Visai, Antonella Gurrado, Costanza Alvisi, Cristina Picone, Manuela Monti, Maria E Bernardo, Paolo Gobbi, Gino R Corazza
INTRODUCTION: Crohn's disease (CD) is a disabling chronic enteropathy sustained by a harmful T-cell response toward antigens of the gut microbiota in genetically susceptible subjects. Growing evidence highlights the safety and possible efficacy of mesenchymal stem cells (MSCs) as a new therapeutic tool for this condition. Therefore, we aimed to investigate the effects of bone marrow-derived MSCs on pathogenic T cells with a view to clinical application. METHODS: T-cell lines from both inflamed and non-inflamed colonic mucosal specimens of CD patients and from healthy mucosa of control subjects were grown with the antigen muramyl-dipeptide in the absence or presence of donors' MSCs...
2015: Stem Cell Research & Therapy
Qiushi Wang, Qiaoni Yang, Zhe Wang, Haixia Tong, Liangyan Ma, Yi Zhang, Fengping Shan, Yiming Meng, Zhengwei Yuan
To characterize different tissue MSCs as sources of cell immunomodulatory therapy. Examined the effects of IFN-γ on WJ-MSC and their immunomodulatory function characteristics. We compared human fetal bone marrow (F-BM), adipose tissue (AT), and Warton's Jelly-derived MSCs (WJ-MSCs) for surface antigen expression, differentiation ability, proliferation capacity, clonality, tolerance for aging, gene expression, and whether IFN-γ affected WJ-MSC gene expression, as determined by real time quantitative PCR. Fifteen geneswere examined...
2016: Human Vaccines & Immunotherapeutics
Dah-Ching Ding, Hsiang-Lan Chou, Yu-Hsun Chang, Wei-Ting Hung, Hwan-Wun Liu, Tang-Yuan Chu
Mesenchymal stem cells (MSCs) and especially those derived from fetal tissues exert a potent immunosuppressive effect that can be enhanced under inflammatory conditions. This study aimed to explore the immunosuppressive properties of human umbilical cord mesenchymal stem cells (HUCMSCs). We found that HLA-G, the nonclassical HLA allele with strong immune-inhibitory properties, was much more expressed on the HUCMSCs than on MSCs of other origins. Flow cytometry revealed that 90.8% of the HUCMSCs expressed HLA-G...
2016: Cell Transplantation
Carmen Ciavarella, Francesco Alviano, Enrico Gallitto, Francesca Ricci, Marina Buzzi, Claudio Velati, Andrea Stella, Antonio Freyrie, Gianandrea Pasquinelli
BACKGROUND: The main histopathological features of abdominal aortic aneurysm (AAA) are tissue proteolysis mediated by matrix metalloproteinases (MMPs) and inflammation. This study aimed at verifying the presence and contribution of mesenchymal stromal cells (MSCs) to aneurysmal tissue remodeling. METHODS AND RESULTS: MSCs were successfully isolated from the AAA wall of 12 male patients and were found to express mesenchymal and stemness markers. MMP-2/-9 are involved in AAA progression and their mRNA levels in AAA-MSCs resulted higher than healthy MSCs (cMSCs), especially MMP-9 (400-fold increased)...
2015: Circulation Journal: Official Journal of the Japanese Circulation Society
Gordana Raicevic, Mehdi Najar, Mustapha Najimi, Adil El Taghdouini, Leo A van Grunsven, Etienne Sokal, Michel Toungouz
BACKGROUND AIMS: Stem cell therapy for liver diseases has recently emerged as a promising alternative to liver transplantation. Eligible cells should have an appropriate immunophenotype. The aim of the present study was to define the immunological profile of two human liver-derived mesenchymal stromal cell populations, namely, stem cells (ADHLSC) and hepatic stellate cells (HSC). METHODS: The study was conducted under normal and inflammatory conditions with the use of human bone marrow mesenchymal stromal cells (BM-MSC) as reference...
February 2015: Cytotherapy
Takele Teklemariam, Bhamini Purandare, Longmei Zhao, Basil M Hantash
Mesenchymal stem cells (MSCs) are immunosuppressive multipotent cells under investigation for potential therapeutic applications in regenerative medicine and prevention of graft-versus-host disease. Human leukocyte antigen (HLA)-G contributes to the immunomodulatory properties of MSCs. HLA-G expression in MSCs is very low and diminishes during in vitro expansion. Epigenetic regulation activates HLA-G expression in some cancer cell lines but not in MSCs. In the present study, adipose- and bone marrow-derived MSCs were exposed to the DNA demethylating agent 5-aza-2-deoxycytidine (5-aza-dC) and histone deacetylase inhibitor valproic acid (VPA) and HLA-G mRNA levels assessed using semi-quantitative reverse-transcription PCR...
September 26, 2014: Biochemical and Biophysical Research Communications
Xiao-Dun Liu, Dong Liu, Chuan-Bao Zang, Hai-Yan Zhang, Yi Ming, Ling-Long Chi, Bai-Jun Shen, Dong Li
This study was objective to explore the effect of IFN-γ on immunosuppressive capability of mesenchymal stem cells (MSC) derived from umbilical cord. The immunomodulating capability of MSC was changed by stimulating cell surface receptors like Toll-like receptors (TLR). The inhibition of T-lymphocyte proliferation by MSC was tested via cell co-cultures. Further RT-PCR and ELISA were performed to examine the expression changes in gene and protein level. The results showed that the IFN-γ could promote the immunosuppressive effect of umbilical cord derived MSC...
June 2014: Zhongguo Shi Yan Xue Ye Xue za Zhi
Florent Montespan, Frédéric Deschaseaux, Luc Sensébé, Edgardo D Carosella, Nathalie Rouas-Freiss
Mesenchymal stem cells (MSCs) are multipotent cells that can be obtained from several sources such as bone marrow and adipose tissue. Depending on the culture conditions, they can differentiate into osteoblasts, chondroblasts, adipocytes, or neurons. In this regard, they constitute promising candidates for cell-based therapy aimed at repairing damaged tissues. In addition, MSCs display immunomodulatory properties through the expression of soluble factors including HLA-G. We here analyse both immunogenicity and immunosuppressive capacity of MSCs derived from bone marrow and adipose tissue before and after osteodifferentiation...
2014: Journal of Immunology Research
Jia-Ping Wang, Gui-Fang Ou-Yang
This study was aimed to investigate the inhibitory mechanism of human amniotic mesenchymal stem cells (HAMSC) on lymphocyte proliferation and to validate the participation of the nonclassic human leukocyte antigen (HLA) class I molecule (HLA-G) in immunosuppressive action of HAMSC. HAMSC were isolated from fetal membranes of human placentas, and were cultured and expanded. The phenotypes of HAMSC were identified by flow cytometry, at same time the HLA-G levels on membrane surface and in cytoplasm were detected by flow cytometry...
February 2014: Zhongguo Shi Yan Xue Ye Xue za Zhi
Farinawati Binti Yazid, Nareshwaran Gnanasegaran, Wijenthiran Kunasekaran, Vijayendran Govindasamy, Sabri Musa
OBJECTIVES: The aim of this study was to investigate the immunodulatory properties of dental pulp stem cells derived from healthy (SCD) and inflamed pulp deciduous (SCDIP) tissues. The overall hypothesis is that SCDIP possess equal immune properties with SCD and could be used as an alternative tissue source in regenerative medicine. MATERIALS AND METHODS: An intra-oral examination was carried out to assess the status of the pulp tissues and group them according to healthy or inflamed...
December 2014: Clinical Oral Investigations
Sabrina Valente, Francesco Alviano, Carmen Ciavarella, Marina Buzzi, Francesca Ricci, Pier Luigi Tazzari, Pasqualepaolo Pagliaro, Gianandrea Pasquinelli
INTRODUCTION: Regenerative medicine challenges researchers to find noncontroversial, safe and abundant stem cell sources. In this context, harvesting from asystolic donors could represent an innovative and unlimited reservoir of different stem cells. In this study, cadaveric vascular tissues were established as an alternative source of human cadaver mesenchymal stromal/stem cells (hC-MSCs). We reported the successful cell isolation from postmortem arterial segments stored in a tissue-banking facility for at least 5 years...
January 15, 2014: Stem Cell Research & Therapy
Katharina Ochs, Felix Sahm, Christiane A Opitz, Tobias V Lanz, Iris Oezen, Pierre-Olivier Couraud, Andreas von Deimling, Wolfgang Wick, Michael Platten
Malignant gliomas are primary brain tumors characterized by profound local immunosuppression. While the remarkable plasticity of perivascular cells - resembling mesenchymal stem cells (MSC) - in malignant gliomas and their contribution to angiogenesis is increasingly recognized, their role as potential mediators of immunosuppression is unknown. Here we demonstrate that FACS-sorted malignant glioma-derived pericytes (HMGP) were characterized by the expression of CD90, CD248, and platelet-derived growth factor receptor-β (PDGFR-β)...
December 15, 2013: Journal of Neuroimmunology
M I Lisianyĭ
Mesenchymal stem cells (MSC) are found in a variety of tissues, including bone marrow, skin and adipose tissue and can be expanded easily in vitro. MSC are thought to have tissue regenerative properties, in the first place via their multilineage differentiation capacity. In addition, MSC have potent immunomodulatory capacity. They inhibit the proliferation of T cells and inhibit dendritic cell maturation. These properties make MSC promising for a diversity of clinical applications; for example, for the prevention and treatment of autoimmune diseases and bone marrow rejection...
2013: Fiziolohichnyĭ Zhurnal
Abderrahim Naji, Nathalie Rouas-Freiss, Antoine Durrbach, Edgardo D Carosella, Luc Sensébé, Frédéric Deschaseaux
Both human leukocyte antigen G (HLA-G) and multipotential mesenchymal stem/stromal cells (MSCs) exhibit immunomodulatory functions. In allogeneic tranplantation, the risks of acute and chronic rejection are still high despite improvement in immunosuppressive treatments, and the induction of a state of tolerance to alloantigens is not achieved. Immunomodulatory properties of MSCs and HLA-G in human allogeneic tranplantation to induce tolerance appears attractive and promising. Interestingly, we and others have demonstrated that MSCs can express HLA-G...
November 2013: Stem Cells
Frédéric Deschaseaux, Julien Gaillard, Alain Langonné, Christophe Chauveau, Abderrahim Naji, Amina Bouacida, Philippe Rosset, Dominique Heymann, Gonzague De Pinieux, Nathalie Rouas-Freiss, Luc Sensébé
Bone-marrow mesenchymal stem cells (MSCs) are the origin of bone-forming cells with immunomodulation potential. HLA-G5 is among the generated immunosuppressive molecules. HLA-G proteins play a crucial role in promoting the acceptance of allografts. However, the mechanisms regulating the expression of HLA-G5 in human MSCs are unknown. We induced differentiation of MSCs and found that HLA-G5 was greatly up-regulated only in osteoblastic cells (+63% for mRNA). Growth plates and bone callus postfracture in adults showed that only bone-lining cells and mesenchymal progenitors were positive for HLA-G5...
August 2013: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
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