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umbilical cord stem cells

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https://www.readbyqxmd.com/read/27917866/umbilical-cord-derived-mesenchymal-stem-cells-instruct-monocytes-towards-an-il10-producing-phenotype-by-secreting-il6-and-hgf
#1
Yinan Deng, Yingcai Zhang, Linsen Ye, Tong Zhang, Jintao Cheng, Guihua Chen, Qi Zhang, Yang Yang
Human UC-MSCs are regarded as an attractive alternative to BM-MSCs for clinical applications due to their easy preparation, higher proliferation and lower immunogenicity. However, the mechanisms underlying immune suppression by UC-MSCs are still unclear. We studied the mechanism of inhibition by UC-MSCs during the differentiation of monocytes into DCs and focused on the specific source and the role of the involved cytokines. We found that UC-MSCs suppressed monocyte differentiation into DCs and instructed monocytes towards other cell types, with clear decreases in the expression of co-stimulatory molecules, in the secretion of inflammatory factors and in allostimulatory capacity...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27909741/the-role-of-epigenetic-modifiers-in-extended-cultures-of-functional-hepatocyte-like-cells-derived-from-human-neonatal-mesenchymal-stem-cells
#2
M Cipriano, J C Correia, S P Camões, N G Oliveira, P Cruz, H Cruz, M Castro, J L Ruas, J M Santos, J P Miranda
The development of predictive in vitro stem cell-derived hepatic models for toxicological drug screening is an increasingly important topic. Herein, umbilical cord tissue-derived mesenchymal stem cells (hnMSCs) underwent hepatic differentiation using an optimized three-step core protocol of 24 days that mimicked liver embryogenesis with further exposure to epigenetic markers, namely the histone deacetylase inhibitor trichostatin A (TSA), the cytidine analogue 5-azacytidine (5-AZA) and dimethyl sulfoxide (DMSO)...
December 1, 2016: Archives of Toxicology
https://www.readbyqxmd.com/read/27909435/immune-reconstitution-after-allogeneic-hematopoietic-stem-cell-transplantation
#3
REVIEW
Justyna Ogonek, Mateja Kralj Juric, Sakhila Ghimire, Pavankumar Reddy Varanasi, Ernst Holler, Hildegard Greinix, Eva Weissinger
The timely reconstitution and regain of function of a donor-derived immune system is of utmost importance for the recovery and long-term survival of patients after allogeneic hematopoietic stem cell transplantation (HSCT). Of note, new developments such as umbilical cord blood or haploidentical grafts were associated with prolonged immunodeficiency due to delayed immune reconstitution, raising the need for better understanding and enhancing the process of immune reconstitution and finding strategies to further optimize these transplant procedures...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27906881/stem-cells-and-clinical-practice-new-advances-and-challenges-at-the-time-of-emerging-problems-with-induced-pluripotent-stem-cell-therapies
#4
Mariusz Z Ratajczak, Kamila Bujko, Wojciech Wojakowski
Humans, like other species that reproduce sexually, originate from a fertilized oocyte (zygote), which is a totipotent stem cell giving rise to an adult organism. During the process of embryogenesis, stem cells at different levels of the developmental hierarchy establish all 3 germ layers and give rise to tissue‑committed stem cells, which are responsible for rejuvenation of a given tissue or organ. The robustness of the stem cell compartment is one of the major factors that directly impact life quality as well as lifespan...
November 10, 2016: Polskie Archiwum Medycyny Wewnętrznej
https://www.readbyqxmd.com/read/27906056/umbilical-cord-blood-derived-non-hematopoietic-stem-cells-retrieved-and-expanded-on-bone-marrow-derived-extracellular-matrix-display-pluripotent-characteristics
#5
Junjie Wu, Yun Sun, Travis J Block, Milos Marinkovic, Zhi-Liang Zhang, Richard Chen, Yixia Yin, Juquan Song, David D Dean, Zhongding Lu, Xiao-Dong Chen
BACKGROUND: Umbilical cord blood (UCB) not only contains hematopoietic stem cells (HSCs), but also non-hematopoietic stem cells (NHSCs) that are able to differentiate into a number of distinct cell types. Based on studies published to date, the frequency of NHSCs in UCB is believed to be very low. However, the isolation of these cells is primarily based on their adhesion to tissue culture plastic surfaces. METHODS AND RESULTS: In the current study, we demonstrate that this approach overlooks some of the extremely immature NHSCs because they lack the ability to adhere to plastic...
December 1, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27905684/the-effect-of-maternal-and-infant-factors-on-cord-blood-yield
#6
REVIEW
Seyed Hadi Mousavi, Saeid Abroun, Morteza Zarrabi, Mona Ahmadipanah
Umbilical cord blood (CB) can be used as an alternative hematopoietic stem cell source for transplantation in hematological malignancy and blood disorders. The success of transplantation is highly related to the levels of total nucleated cell and CD34(+) cell counts. The evaluation of optimal conditions can decrease the rate of graft rejection due to low cell count and increases the quality of CB units (CBUs) in the blood bank and the success rate of engraftment. To this end, we review the maternal and infant parameters affecting the quality and quantity of CBUs...
December 1, 2016: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/27904497/preparation-of-polypyrrole-embedded-electrospun-poly-lactic-acid-nanofibrous-scaffolds-for-nerve-tissue-engineering
#7
Jun-Feng Zhou, Yi-Guo Wang, Liang Cheng, Zhao Wu, Xiao-Dan Sun, Jiang Peng
Polypyrrole (PPy) is a biocompatible polymer with good conductivity. Studies combining PPy with electrospinning have been reported; however, the associated decrease in PPy conductivity has not yet been resolved. We embedded PPy into poly(lactic acid) (PLA) nanofibers via electrospinning and fabricated a PLA/PPy nanofibrous scaffold containing 15% PPy with sustained conductivity and aligned topography. There was good biocompatibility between the scaffold and human umbilical cord mesenchymal stem cells as well as Schwann cells...
October 2016: Neural Regeneration Research
https://www.readbyqxmd.com/read/27899238/goat-umbilical-cord-cells-are-permissive-to-small-ruminant-lentivirus-infection-in-vitro
#8
Gabrielle R Martins, Rebeca C Marinho, Rosivaldo Q Bezerra Junior, Antoniel de O Alves, Lilia M C Câmara, Luiz C Albuquerque-Pinto, Maria F da S Teixeira
Small ruminant lentiviruses isolated from peripheral blood leukocytes and target organs can be propagated in vitro in fibroblasts derived from goat synovial membrane cells. These cells are obtained from tissues collected from embryos or fetuses and are necessary for the establishment of the fibroblast primary culture. A new alternative type of host cells, derived from goat umbilical cord, was isolated and characterized phenotypically with its main purpose being to obtain cell monolayers that could be used for the diagnosis and isolation of small ruminant lentiviruses in cell culture...
November 19, 2016: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/27894407/mirna-378-controls-cell-proliferation-in-rabbit-umbilical-cord-mesenymal-stem-cells
#9
H Wang, Z Zhao, J Du, T Wang, L Yang, H Yu
Mesenchymal stem cells (MSC) are known to have the ability to differentiate into various lineages of mesenchymal tissue. They are widely distributed in a variety of tissues in the body and are also present in the foetal environment. MicroRNAs (miRNAs) are a fundamental class of biological molecules that play a crucial role in development. In this study, microRNA-378 and its predicted target (Sufu, suppressor of fused homolog) were used to study proliferation of rabbit umbilical cord mesenymal stem cells, luciferase reporter assay was used to assess and confirm the binding sequence of 3'untranslated region between microRNA-378 and Sufu...
October 31, 2016: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/27892545/erythrocyte-membrane-based-cationic-polymer-mcdna-complexes-as-an-efficient-gene-delivery-system
#10
Ping Huang, Jing Zhao, Chiju Wei, Xiaohu Hou, Pingzhang Chen, Yan Tan, Cheng-Yi He, Zhiyong Wang, Zhi-Ying Chen
Gene therapy has great promise for the treatment of obtained and inherited serious diseases. However, the lack of safe and efficient gene delivery systems remains a barrier for their clinical application. Here, we reported a potential gene delivery vehicle composed of the erythrocyte membrane and cationic polymers, for example the XtremeGENE from Roche and the ε-caprolactone modified polyethylenimine. In addition to high efficiency, this system showed negligible cytotoxicity compared to the two cationic polymers alone in various cell lines, including human embryonic kidney cells (293T), human liver cancer cells (Huh7 and HepG2), murine dendritic cells (DC2...
November 28, 2016: Biomaterials Science
https://www.readbyqxmd.com/read/27888544/conditioned-medium-a-new-alternative-for-cryopreservation-of-equine-umbilical-cord-mesenchymal-stem-cells
#11
Leandro Maia, Marianne Camargos Dias, Carolina Nogueira de Moraes, Camila de Paula Freitas-Dell'aqua, Ligia S L Silveira da Mota, Valquíria Santiloni, Fernanda da Cruz Landim-Alvarenga
Cryopreservation is a feasible alternative to maintaining several cell lines, particularly for immediate therapeutic use, transportation of samples and implementation of new in vitro studies. This work parts from the hypothesis that the medium of cryopreservation composed by 90% of conditioned medium (CM) supports cryopreservation of equine umbilical cord intervascular matrix mesenchymal stem cells (UCIM-MSCs), allowing the maintenance of the biological properties for the establishment of cell banks intended for therapeutic use and in vitro studies...
November 26, 2016: Cell Biology International
https://www.readbyqxmd.com/read/27888015/early-and-long-term-impaired-t-lymphocyte-immune-reconstitution-after-cord-blood-transplantation-with-antithymocyte-globulin
#12
Nerea Castillo, Irene García-Cadenas, Pere Barba, Carme Canals, Cristina Díaz-Heredia, Rodrigo Martino, Christelle Ferrà, Isabel Badell, Izaskun Elorza, Jorge Sierra, David Valcárcel, Sergio Querol
Immune reconstitution is crucial to the success of allogeneic hematopoietic stem cell transplantation. Umbilical cord blood transplantation (UCBT) has been associated with delayed immune reconstitution. We characterized the kinetics and investigated the risk variables affecting the main lymphocyte subsets recovery in 225 consecutive pediatric and adult patients [males, n=126, median age=15, range 0.3-60, interquartile range, 4-35] who underwent myeloablative single-UCBT between 2005 and 2015 for malignant and non-malignant disorders...
November 22, 2016: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/27887864/optimization-of-cgmp-purification-and-expansion-of-umbilical-cord-blood-derived-t-regulatory-cells-in-support-of-first-in-human-clinical-trials
#13
David H McKenna, Darin Sumstad, Diane M Kadidlo, Bjorn Batdorf, Colin J Lord, Sarah C Merkel, Christine M Koellner, Julie M Curtsinger, Carl H June, James L Riley, Bruce L Levine, Jeffrey S Miller, Claudio G Brunstein, John E Wagner, Bruce R Blazar, Keli L Hippen
BACKGROUND AIMS: Thymic-derived regulatory T cells (tTreg) are critical regulators of the immune system. Adoptive tTreg transfer is a curative therapy for murine models of autoimmunity, graft rejection, and graft-versus-host disease (GVHD). We previously completed a "first-in-human" clinical trial using in vitro expanded umbilical cord blood (UCB)-derived tTreg to prevent GVHD in patients undergoing UCB hematopoietic stem cell transplantation (HSCT). tTreg were safe and demonstrated clinical efficacy, but low yield prevented further dose escalation...
November 22, 2016: Cytotherapy
https://www.readbyqxmd.com/read/27882356/intra-osseous-co-transplantation-of-cd34-selected-umbilical-cord-blood-and-mesenchymal-stromal-cells
#14
Leland Metheny, Saada Eid, Karen Lingas, Jane Reese, Howard Meyerson, Alexander Tong, Marcos de Lima, Alex Y Huang
Human mesenchymal stromal cells (MSC) have been shown to support the growth and differentiation of hematopoietic stem cells (HSC). We hypothesized that intra-osseous (IO) co-transplantation of MSC and umbilical cord blood (UCB) may be effective in improving early HSC engraftment, as IO transplantation has been demonstrated to enhance UCB engraftment in NOD SCID-gamma (NSG) mice. Following non-lethal irradiation (300rads), 6 groups of NSG mice were studied: 1) intravenous (IV) UCB CD34(+) cells, 2) IV UCB CD34(+) cells and MSC, 3) IO UCB CD34(+) cells, 4) IO UCB CD34(+) cells and IO MSC, 5) IO UCB CD34(+) cells and IV MSC, and 6) IV UCB CD34(+) and IO MSC...
2016: Hematol Med Oncol
https://www.readbyqxmd.com/read/27882158/functional-characterization-of-human-umbilical-cord-derived-mesenchymal-stem-cells-for-treatment-of-systolic-heart-failure
#15
Zhihua Fang, Xiaoguang Yin, Jianzhong Wang, Na Tian, Qiang Ao, Yongquan Gu, Ying Liu
Congestive heart failure (HF) is a leading cause of morbidity and mortality worldwide. Although advances in medical therapy, mechanical support and heart transplantation have been made, almost half of all patients with HF succumb to the disease within five years of the initial diagnosis. Therefore, treatment methods need to be identified to restore the structure and function of cardiac muscle. Three patients with HF caused by ischemic cardiomyopathy received human umbilical cord-derived mesenchymal stem cell (HUC-MSC) intravenous infusion were included in the present study...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27882104/safety-and-therapeutic-effect-of-mesenchymal-stem-cell-infusion-on-moderate-to-severe-ulcerative-colitis
#16
Jianxia Hu, Gang Zhao, Lize Zhang, Cuixia Qiao, Aiping Di, Hong Gao, Hong Xu
One of the primary targets of the clinical treatment of ulcerative colitis (UC) is to repair the damaged colonic mucosa. Mesenchymal stem cells (MSCs) have therapeutic potential in regenerative medicine due to their differentiation capacity and their secretion of numerous bioactive molecules. The present study describes a clinical trial (trial registration no. NCT01221428) investigating the safety and therapeutic effect of MSCs derived from human umbilical cord on moderate to severe UC. Thirty-four patients with UC were included in group I and treated with MSC infusion in addition to the base treatment, and thirty-six patients were in group II and treated with normal saline in addition to the base treatment...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27874233/induction-of-hepatocyte-like-cells-from-human-umbilical-cord-derived-mesenchymal-stem-cells-by-defined-micrornas
#17
Xia Zhou, Lina Cui, Xinmin Zhou, Qiong Yang, Lu Wang, Guanya Guo, Yu Hou, Weile Cai, Zheyi Han, Yongquan Shi, Ying Han
Generating functional hepatocyte-like cells (HLCs) from mesenchymal stem cells (MSCs) is of great urgency for bio-artificial liver support system (BALSS). Previously, we obtained HLCs from human umbilical cord-derived MSCs by overexpressing seven microRNAs (HLC-7) and characterized their liver functions in vitro and in vivo. Here, we aimed to screen out the optimal miRNA candidates for hepatic differentiation. We sequentially removed individual miRNAs from the pool and examined the effect of transfection with remainder using RT-PCR, periodic acid-Schiff (PAS) staining and low-density lipoprotein (LDL) uptake assays and by assessing their function in liver injury models...
November 22, 2016: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/27874039/effects-of-light-emitting-diode-irradiation-on-the-osteogenesis-of-human-umbilical-cord-mesenchymal-stem-cells-in-vitro
#18
Dazhi Yang, Weihong Yi, Ertian Wang, Min Wang
The aim of this study was to examine the effects of light-emitting diode (LED) photobiomodulation therapy on the proliferation and differentiation of human umbilical cord mesenchymal stem cells (hUMSCs) cultured in osteogenic differentiation medium. HUMSCs were irradiated with an LED light at 620 nm and 2 J/cm(2) and monitored for cell proliferation and osteogenic differentiation activity. The experiment involved four groups of cells: the control group; the osteogenic group (osteo group); the LED group; the osteogenic + LED group (LED + osteo group)...
November 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27873515/angiopoietin-1-modified-human-umbilical-cord-mesenchymal-stem-cell-therapy-for-endotoxin-induced-acute-lung-injury-in-rats
#19
Zhi Wei Huang, Ning Liu, Dong Li, Hai Yan Zhang, Ying Wang, Yi Liu, Le Ling Zhang, Xiu Li Ju
PURPOSE: Angiopoietin-1 (Ang1) is a critical factor for vascular stabilization and endothelial survival via inhibition of endothelial permeability and leukocyte- endothelium interactions. Hence, we hypothesized that treatment with umbilical cord mesenchymal stem cells (UCMSCs) carrying the Ang1 gene (UCMSCs-Ang1) might be a potential approach for acute lung injury (ALI) induced by lipopolysaccharide (LPS). MATERIALS AND METHODS: UCMSCs with or without transfection with the human Ang1 gene were delivered intravenously into rats one hour after intra-abdominal instillation of LPS to induce ALI...
January 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/27872731/infectious-complications-after-umbilical-cord-blood-transplantation-from-unrelated-donors
#20
REVIEW
Juan Montoro, José Luis Piñana, Federico Moscardó, Jaime Sanz
Umbilical cord-blood (UCB) is a well-recognized alternative source of stem cells for unrelated donor hematopoietic stem cell transplantation (HSCT). As compared with other stem cell sources from adult donors, it has the advantages of immediate availability of cells, absence of risk to the donor and reduced risk of graft-versus-host disease despite donor-recipient HLA disparity. However, the use of UCB is limited by the delayed post-transplant hematologic recovery due, at least in part, to the reduced number of hematopoietic cells in the graft and the delayed or incomplete immune reconstitution...
2016: Mediterranean Journal of Hematology and Infectious Diseases
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