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mesenchymal stromal cells

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https://www.readbyqxmd.com/read/28096400/defining-recovery-neurobiology-of-injured-spinal-cord-by-synthetic-matrix-assisted-hmsc-implantation
#1
Alexander E Ropper, Devang K Thakor, InBo Han, Dou Yu, Xiang Zeng, Jamie E Anderson, Zaid Aljuboori, Soo-Woo Kim, Hongjun Wang, Richard L Sidman, Ross D Zafonte, Yang D Teng
Mesenchymal stromal stem cells (MSCs) isolated from adult tissues offer tangible potential for regenerative medicine, given their feasibility for autologous transplantation. MSC research shows encouraging results in experimental stroke, amyotrophic lateral sclerosis, and neurotrauma models. However, further translational progress has been hampered by poor MSC graft survival, jeopardizing cellular and molecular bases for neural repair in vivo. We have devised an adult human bone marrow MSC (hMSC) delivery formula by investigating molecular events involving hMSCs incorporated in a uniquely designed poly(lactic-co-glycolic) acid scaffold, a clinically safe polymer, following inflammatory exposures in a dorsal root ganglion organotypic coculture system...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28095523/effects-of-titanium-surface-microtopography-and-simvastatin-on-growth-and-osteogenic-differentiation-of-human-mesenchymal-stem-cells-in-estrogen-deprived-cell-culture
#2
Premjit Arpornmaeklong, Prisana Pripatnanont, Chonticha Chookiatsiri, Boonsin Tangtrakulwanich
PURPOSE: This study aimed to investigate the effects of titanium surface topography and simvastatin on growth and osteogenic differentiation of human bone marrow stromal cells (hBMSCs) in estrogen-deprived (ED) cell culture. MATERIALS AND METHODS: Human BMSCs were seeded on cell culture plates, smooth-surface titanium (Ti) disks, and sandblasted with large grits and acid etched (SLA)-surface Ti disks; and subsequently cultured in regular (fetal bovine serum [FBS]), ED, and ED-with 100 nM simvastatin (ED-SIM) culture media for 14 to 21 days...
January 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28095396/tenascin-c-and-fibronectin-expression-divide-early-stage-tongue-cancer-into-low-and-high-risk-groups
#3
Elias Sundquist, Joonas H Kauppila, Johanna Veijola, Rayan Mroueh, Petri Lehenkari, Saara Laitinen, Juha Risteli, Ylermi Soini, Veli-Matti Kosma, Iris Sawazaki-Calone, Carolina Carneiro Soares Macedo, Risto Bloigu, Ricardo D Coletta, Tuula Salo
BACKGROUND: Oral tongue squamous cell carcinoma (OTSCC) metastasises early, especially to regional lymph nodes. There is an ongoing debate on which early stage (T1-T2N0) patients should be treated with elective neck dissection. We need prognosticators for early stage tongue cancer. METHODS: Mice immunisation with human mesenchymal stromal cells resulted in production of antibodies against tenascin-C (TNC) and fibronectin (FN), which were used to stain 178 (98 early stage), oral tongue squamous cell carcinoma samples...
January 17, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28093371/sonographically-guided-knee-meniscus-injections-feasibility-techniques-and-validation
#4
Michael R Baria, Jacob L Sellon, Dan Lueders, Jay Smith
BACKGROUND: There is a growing interest in the use of biologic agents such as platelet-rich plasma and mesenchymal stem/stromal cells to treat musculoskeletal injuries, including meniscal tears. Although prior research has documented the role of diagnostic ultrasound to evaluate meniscal tears, sonographically guided (SG) techniques to specifically deliver therapeutic agents into the meniscus have not been described. OBJECTIVE: To describe and validate SG injection techniques for the body and posterior horn of the medial and lateral meniscus...
January 13, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28090484/mesenchymal-stromal-cells-in-myeloid-malignancies
#5
REVIEW
Thomas Schroeder, Stefanie Geyh, Ulrich Germing, Rainer Haas
Myelodysplastic syndromes (MDS) and acute myeloid leukemia (AML) are clonal myeloid disorders characterized by hematopoietic insufficiency. As MDS and AML are considered to originate from genetic and molecular defects of hematopoietic stem and progenitor cells (HSPC), the main focus of research in this field has focused on the characterization of these cells. Recently, the contribution of BM microenvironment to the pathogenesis of myeloid malignancies, in particular MDS and AML has gained more interest. This is based on a better understanding of its physiological role in the regulation of hematopoiesis...
December 2016: Blood Research
https://www.readbyqxmd.com/read/28089755/biodistribution-and-retention-of-locally-administered-human-mesenchymal-stromal-cells-quantitative-polymerase-chain-reaction-based-detection-of-human-dna-in-murine-organs
#6
Michael Creane, Linda Howard, Timothy O'Brien, Cynthia M Coleman
BACKGROUND: Determining the distributive fate and retention of a cell therapy product after administration is an essential part of characterizing it's biosafety profile. Therefore, regulatory guidelines stipulate that biodistribution assays are a requirement prior to advancing a cell therapy to the clinic. Here the development of a highly sensitive quantitative polymerase chain reaction (qPCR)-based method of tracking the biodistribution and retention of human mesenchymal stromal cells (hMSCs) in mice, rats or rabbits is described...
January 12, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28089079/repeated-subarachnoid-administrations-of-autologous-mesenchymal-stromal-cells-supported-in-autologous-plasma-improve-quality-of-life-in-patients-suffering-incomplete-spinal-cord-injury
#7
Jesús Vaquero, Mercedes Zurita, Miguel A Rico, Celia Bonilla, Concepción Aguayo, Cecilia Fernández, Noemí Tapiador, Marta Sevilla, Carlos Morejón, Jesús Montilla, Francisco Martínez, Esperanza Marín, Salvador Bustamante, David Vázquez, Joaquín Carballido, Alicia Rodríguez, Paula Martínez, Coral García, Mercedes Ovejero, Marta V Fernández
BACKGROUND AIMS: Cell therapy with mesenchymal stromal cells (MSCs) offers new hope for patients suffering from spinal cord injury (SCI). METHODS: Ten patients with established incomplete SCI received four subarachnoid administrations of 30 × 10(6) autologous bone marrow MSCs, supported in autologous plasma, at months 1, 4, 7 and 10 of the study, and were followed until the month 12. Urodynamic, neurophysiological and neuroimaging studies were performed at months 6 and 12, and compared with basal studies...
January 6, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28088384/the-signalling-mechanisms-of-a-novel-mitochondrial-complex-i-inhibitor-prevent-lipid-accumulation-and-attenuate-tnf-%C3%AE-induced-insulin-resistance-in-vitro
#8
Siobhán Leonard, Laura M Tobin, John B C Findlay
RTC-1 has recently been identified as a member of a new class of anti-diabetic compounds acting through the inhibition of complex I of the mitochondrial respiratory chain (NADH:ubiquinone oxidoreductase) to improve glucose handling and inhibit weight gain in mice fed a high-fat diet (HFD). The exact mechanism by which the reduced activity of NADH:ubiquinone oxidoreductase, in response to RTC-1, promotes these improved metabolic parameters remains to be established. Through extensive in vitro analysis, new molecular insights into these downstream signalling pathways have been obtained...
January 11, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28087163/clinical-studies-of-ex-vivo-expansion-to-accelerate-engraftment-after-umbilical-cord-blood-transplantation-a-systematic-review
#9
REVIEW
Jeffrey Kiernan, Pauline Damien, Madeline Monaghan, Risa Shorr, Lauralyn McIntyre, Dean Fergusson, Alan Tinmouth, David Allan
Cell dose limits greater use of umbilical cord blood (UCB) in hematopoietic cell transplantation. The clinical benefits of ex vivo expansion need clarity to understand its potential impact. A systematic search of studies addressing UCB ex vivo expansion was conducted. Fifteen clinical studies (349 transplanted patients) and 13 registered trials were identified. The co-infusion of an expanded unit and a second unmanipulated unit (8 studies), the fractional expansion of 12% to 60% of a single unit (5 studies), and the infusion of a single expanded unit (2 studies) were reported...
December 23, 2016: Transfusion Medicine Reviews
https://www.readbyqxmd.com/read/28086811/study-of-the-microrna-expression-profile-of-foreskin-derived-mesenchymal-stromal-cells-following-inflammation-priming
#10
Hussein Fayyad-Kazan, Mohammad Fayyad-Kazan, Bassam Badran, Dominique Bron, Laurence Lagneaux, Mehdi Najar
BACKGROUND: Due to their self-renewal capacity, multi-lineage potential, and immunomodulatory properties, mesenchymal stromal cells (MSCs) are an attractive tool for different therapeutic strategies. Foreskin (FSK), considered as a biological waste material, has already been shown to be a valuable source of MSCs. Besides their typical fibroblast like morphology and International Society for cellular Therapy compliant phenotype, foreskin-MSCs (FSK-MSCs) are clonogenic, and highly proliferative cells with multi-lineage and strong immunomodulatory capacities...
January 13, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28081228/resistance-for-genotoxic-damage-in-mesenchymal-stromal-cells-is-increased-by-hypoxia-but-not-generally-dependent-on-p53-regulated-cell-cycle-arrest
#11
Jana Lützkendorf, Elisabeth Wieduwild, Katrin Nerger, Nina Lambrecht, Hans-Joachim Schmoll, Carsten Müller-Tidow, Lutz Peter Müller
Adult stem cells including multipotent mesenchymal stromal cells (MSC) acquire a high amount of DNA-damage due to their prolonged lifespan. MSC may exert specific mechanisms of resistance to avoid loss of functional activity. We have previously shown that resistance of MSC is associated with an induction of p53 and proliferation arrest upon genotoxic damage. Hypoxia may also contribute to resistance in MSC due to the low oxygen tension in the niche. In this study we characterized the role of p53 and contribution of hypoxia in resistance of MSC to genotoxic damage...
2017: PloS One
https://www.readbyqxmd.com/read/28077316/chromatin-dynamics-regulate-mesenchymal-stem-cell-lineage-specification-and-differentiation-to-osteogenesis
#12
Hai Wu, Jonathan A R Gordon, Troy W Whitfield, Phillip W L Tai, Andre J van Wijnen, Janet L Stein, Gary S Stein, Jane B Lian
Multipotent mesenchymal stromal cells (MSCs) are critical for regeneration of multiple tissues. Epigenetic mechanisms are fundamental regulators of lineage specification and cell fate, and as such, we addressed the question of which epigenetic modifications characterize the transition of nascent MSCs to a tissue specific MSC-derived phenotype. By profiling the temporal changes of seven histone marks correlated to gene expression during proliferation, early commitment, matrix deposition, and mineralization stages, we identified distinct epigenetic mechanisms that regulate transcriptional programs necessary for tissue-specific phenotype development...
January 8, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28076785/infection-programs-sustained-lymphoid-stromal-cell-responses-and-shapes-lymph-node-remodeling-upon-secondary-challenge
#13
Julia L Gregory, Anne Walter, Yannick O Alexandre, Jyh Liang Hor, Ruijie Liu, Joel Z Ma, Sapna Devi, Nobuko Tokuda, Yuji Owada, Laura K Mackay, Gordon K Smyth, William R Heath, Scott N Mueller
Lymph nodes (LNs) are constructed of intricate networks of endothelial and mesenchymal stromal cells. How these lymphoid stromal cells (LSCs) regulate lymphoid tissue remodeling and contribute to immune responses remains poorly understood. We performed a comprehensive functional and transcriptional analysis of LSC responses to skin viral infection and found that LSC subsets responded robustly, with different kinetics for distinct pathogens. Recruitment of cells to inflamed LNs induced LSC expansion, while B cells sustained stromal responses in an antigen-independent manner...
January 10, 2017: Cell Reports
https://www.readbyqxmd.com/read/28075171/the-role-of-tumor-microenvironment-in-collective-tumor-cell-invasion
#14
Jia-Shun Wu, Su-Rui Sheng, Xin-Hua Liang, Ya-Ling Tang
For many cancer types, cancer cells invade into surrounding tissues by collective movement of cell groups that remain connected via cell-cell junctions. This migration is completely distinguished from single-cell migration, in which cancer cells disrupt the tight intercellular junctions and gain a mesenchymal phenotype. Recently, emerging evidence has revealed that collective cell invasion depends on not only cell-intrinsic mechanisms but also on extracellular mechanisms by bidirectional interplay between the tumor cell and the tumor environment...
January 11, 2017: Future Oncology
https://www.readbyqxmd.com/read/28074628/s100a4-metastasin-positive-mesenchymal-canine-mammary-tumour-spheroids-reduce-tenascin-c-synthesis-under-dmso-exposure-in-vitro
#15
S Kau, I Miller, A Tichy, C Gabriel
In breast cancer research S100A4-positive tumour-associated stromal cells are assumed as primary source of Tenascin C (TNC) in the metastatic environment. Aim of the present study was to isolate and characterize S100A4/TNC positive stromal canine mammary tumour (CMT) cells. Cells grown as scaffold-free spheroids were investigated for S100A4, TNC, and proliferative activity under 1.8% DMSO stimulation by means of Western blot and immunohistochemistry. DMSO is a commonly used drug solvent despite well-known side effects on cells including TNC expression...
January 11, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/28073305/human-amniotic-mesenchymal-stromal-cells-as-favourable-source-for-cartilage-repair
#16
Emma Muinos-López, Tamara Hermida-Gómez, Isaac Fuentes-Boquete, Francisco Javier de Toro-Santos, Francisco J Blanco, Silvia María Díaz-Prado
INTRODUCTION: Localized trauma-derived breakdown of the hyaline articular cartilage may progress towards osteoarthritis, a degenerative condition characterized by total loss of articular cartilage and joint function. Tissue engineering technologies encompass several promising approaches with high therapeutic potential for the treatment of these focal defects. However, most of the research in tissue engineering is focused on potential materials and structural cues, while little attention is directed to the most appropriate source of cells endowing these materials...
January 10, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28072432/closed-vitrification-system-as-a-platform-for-cryopreservation-of-tissue-engineered-constructs
#17
N A Trufanova, V S Zaikov, A V Zinchenko, A Yu Petrenko, Y A Petrenko
BACKGROUND: Cryopreservation of mesenchymal stromal cells (MSCs) and MSCs-based tissue engineered constructs (TECs) is a promising strategy for regenerative medicine. OBJECTIVE: To examine vitrification system consisting of multicomponent vitreous solution, closed type container, human adult MSCs and two-step exposure procedure as a platform for cryopreservation of MSCs-based TECs. MATERIALS AND METHODS: Vitrification properties of solutions were studied by visual analysis and calorimetry...
November 2016: Cryo Letters
https://www.readbyqxmd.com/read/28070642/distinct-expression-profile-of-stem-cell-markers-lgr5-and-lgr6-in-basaloid-skin-tumors
#18
Bo Gun Jang, Cheol Lee, Hye Sung Kim, Myung Soo Shin, Min Seok Cheon, Jae Wang Kim, Woo Ho Kim
Mammalian epidermis, which is composed of hair follicles, sebaceous glands, and interfollicular epidermis, is maintained by discrete stem cells. In vivo lineage tracing demonstrated that murine LGR5 cells are mainly responsible for hair follicle regeneration whereas LGR6 cells generate sebaceous glands and interfollicular epidermis. However, little is known about their expression in the human skin tumors. In this study, we investigated the expression profile of LGR5 and LGR6 in a variety of human skin tumors including basaloid tumors with follicular differentiation (94 basal cell carcinomas, 18 trichoepitheliomas, 3 basaloid follicular hamartomas, and 12 pilomatricomas) and tumors with ductal differentiation (7 eccrine poromas, 8 hidradenomas, and 5 spiradenomas)...
January 9, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28069512/minocycline-enhances-the-mesenchymal-stromal-stem-cell-pro-healing-phenotype-in-triple-antimicrobial-loaded-hydrogels
#19
Alberto Daniel Guerra, Warren E Rose, Peiman Hematti, W John Kao
: Mesenchymal stromal/stem cells (MSCs) have demonstrated pro-healing properties including an anti-inflammatory cytokine profile and the promotion of angiogenesis via expression of growth factors in pre-clinical models. MSCs encapsulated in poly(ethylene glycol) diacrylate (PEGdA) and thiolated gelatin poly(ethylene glycol) (Gel-PEG-Cys) crosslinked hydrogels have led to controlled cellular presentation at wound sites with favorable wound healing outcomes. However, the therapeutic potential of MSC-loaded hydrogels may be limited by non-specific protein adsorption on the delivery matrix that could facilitate the initial adhesion of microorganisms and subsequent virulent biofilm formation...
January 6, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28068868/mir-26a-mediates-adipogenesis-of-amniotic-fluid-mesenchymal-stem-stromal-cells-via-pten-cyclin-e1-and-cdk6
#20
Ourania Trohatou, Dimitra Zagoura, Nikos Orfanos, Kalliopi I Pappa, Evangelos Marinos, Nicholas Anagnou, Maria G Roubelakis
Recent findings indicate that microRNAs (miRNAs) are critical for the regulatory network of adipogenesis in human mesenchymal stem/stromal cells (MSCs). Fetal MSCs derived from amniotic fluid (AF-MSCs) represent a population of multipotent stem cells characterized by a wide range of differentiation properties that can be applied in cell-based therapies. In this study, miRNA microarray analysis was performed to assess miRNA expression in terminal differentiated AF-MSCs into adipocyte-like cells (AL cells). MiR-26a was identified in high expression levels in AL cells indicating a critical role in the process of adipogenesis...
January 9, 2017: Stem Cells and Development
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