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Mesenchymal stem cells

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https://www.readbyqxmd.com/read/29908226/visfatin-alters-the-cytokine-and-matrix-degrading-enzyme-profile-during-osteogenic-and-adipogenic-msc-differentiation
#1
Lali Tsiklauri, Janina Werner, Marian Kampschulte, Klaus W Frommer, Lucija Berninger, Martina Irrgang, Kristina Glenske, Dirk Hose, Thaqif El Khassawna, Jörn Pons-Kühnemann, Stefan Rehart, Sabine Wenisch, Ulf Müller-Ladner, Elena Neumann
OBJECTIVES: Age-related bone loss is associated with bone marrow adiposity. Adipokines (e.g. visfatin, resistin, leptin) are adipocyte-derived factors with immunomodulatory properties and might influence differentiation of bone marrow-derived mesenchymal stem cells (MSC) in osteoarthritis (OA) and osteoporosis. Thus, the presence of adipokines and MMPs in bone marrow and their effects on MSC differentiation were analyzed. METHODS: MSC and RNA were isolated from femoral heads after hip replacement surgery of OA or osteoporotic femoral neck fracture (FF) patients...
June 13, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29908007/cocl-2-a-mimic-of-hypoxia-enhances-bone-marrow-mesenchymal-stem-cells-migration-and-osteogenic-differentiation-via-stat3-signaling-pathway
#2
Xin Yu, Qilong Wan, Gu Cheng, Xin Cheng, Jing Zhang, Janak L Pathak, Zubing Li
Mesenchymal stem cells homing and migration is a crucial step during bone fracture healing. Hypoxic environment in fracture site induces bone marrow mesenchymal stem cells (BMSCs) migration, but its mechanism remains unclear. Our previous study and studies by other groups have reported the involvement of signal transducer and activator of transcription 3 (STAT3) pathway in cell migration. However, the role of STAT3 pathway in hypoxia-induced cell migration is still unknown. In this study, we investigated the role of STAT3 signaling in hypoxia-induced BMSCs migration and osteogenic differentiation...
June 16, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29907642/telomerase-reverse-transcriptase-coordinates-with-the-epithelial-to-mesenchymal-transition-through-a-feedback-loop-to-define-properties-of-breast-cancer-stem-cells
#3
Ahmed El-Badawy, Nehal I Ghoneim, Mohamed A Nasr, Hoda Elkhenany, Toka A Ahmed, Sara M Ahmed, Nagwa El-Badri
Telomerase and its core component, telomerase reverse transcriptase (hTERT), are critical for stem cell compartment integrity. Normal adult stem cells have the longest telomeres in a given tissue, a property mediated by high hTERT expression and high telomerase enzymatic activity. In contrast, cancer stem cells (CSCs) have short telomeres despite high expression of hTERT, indicating that the role of hTERT in CSCs is not limited to telomere elongation and/or maintenance. The function of hTERT in CSCs remains poorly understood...
June 15, 2018: Biology Open
https://www.readbyqxmd.com/read/29907569/arginine-methylation-of-smad7-by-prmt1-in-tgf-%C3%AE-induced-epithelial-mesenchymal-transition-and-epithelial-stem-cell-generation
#4
Yoko Katsuno, Jian Qin, Juan A Oses-Prieto, Hongjun Wang, Olan Jackson-Weaver, Tingwei Zhang, Samy Lamouille, Jian Wu, A L L Burlingame, Jian Xu, Rik Derynck
The epithelial-to-mesenchymal transdifferentiation (EMT) is crucial for tissue differentiation in development, and drives essential steps in cancer and fibrosis. EMT is accompanied by reprogramming of gene expression, and has been associated with the epithelial stem cell state in normal and carcinoma cells. The cytokine TGF-β drives this program in cooperation with other signaling pathways and through TGF-β-activated Smad3 as major effector. TGF-β-induced Smad3 activation is inhibited by Smad7 and to a lesser extent by Smad6, and Smad6 and Smad7 both inhibit Smad1 and Smad5 activation in response to the TGF-β-related bone morphogenetic proteins (BMPs)...
June 15, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29907361/mesenchymal-stem-cell-expression-of-interleukin-35-protects-against-ulcerative-colitis-by-suppressing-mucosal-immune-responses
#5
Yongjia Yan, Na Zhao, Xianghui He, Hao Guo, Zhixiang Zhang, Tong Liu
BACKGROUND: Interleukin-35 (IL-35) has recently been identified as an immunosuppressive cytokine that has been used as a potential therapy for chronic inflammatory and autoimmune diseases. However, there remains a paucity of data regarding its potential benefits after integration into mesenchymal stem cells (MSCs). METHODS: We used a dextran sulfate sodium (DSS)-induced colitis mice model and treated them with IL-35-MSCs, MSCs or saline. The body weight was recorded daily and inflammatory processes were determined...
June 12, 2018: Cytotherapy
https://www.readbyqxmd.com/read/29906928/sensing-of-substratum-rigidity-and-directional-migration-by-fast-crawling-cells
#6
Chika Okimura, Yuichi Sakumura, Katsuya Shimabukuro, Yoshiaki Iwadate
Living cells sense the mechanical properties of their surrounding environment and respond accordingly. Crawling cells detect the rigidity of their substratum and migrate in certain directions. They can be classified into two categories: slow-moving and fast-moving cell types. Slow-moving cell types, such as fibroblasts, smooth muscle cells, mesenchymal stem cells, etc., move toward rigid areas on the substratum in response to a rigidity gradient. However, there is not much information on rigidity sensing in fast-moving cell types whose size is ∼10 μm and migration velocity is ∼10 μm/min...
May 2018: Physical Review. E
https://www.readbyqxmd.com/read/29906627/substrate-micropatterns-produced-by-polymer-demixing-regulate-focal-adhesions-actin-anisotropy-and-lineage-differentiation-of-stem-cells
#7
Sebastián L Vega, Varun Arvind, Prakhar Mishra, Joachim Kohn, N Sanjeeva Murthy, Prabhas V Moghe
Stem cells are adherent cells whose multipotency and differentiation can be regulated by numerous microenvironmental signals including soluble growth factors and surface topography. This study describes a simple method for creating distinct micropatterns via microphase separation resulting from polymer demixing of poly(desaminotyrosyl-tyrosine carbonate) (PDTEC) and polystyrene (PS). Substrates with co-continuous (ribbons) or discontinuous (islands and pits) PDTEC regions were obtained by varying the ratio of PDTEC and sacrificial PS...
June 12, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29906555/injectable-liquid-polymers-extend-the-delivery-of-corticosteroids-for-the-treatment-of-osteoarthritis
#8
Edgardo Rivera-Delgado, Ashley Djuhadi, Chaitanya Danda, Jonathan Kenyon, João Maia, Arnold I Caplan, Horst A von Recum
Drug delivery strategies generally use inert materials, such as high molecular weight polymers, to encapsulate and control the release rate of therapeutic drugs. Diffusion governs release and depends on the ease of permeation of the polymer alongside the device thickness. Yet in applications such as osteoarthritis, the physiological constraints and limited intra-articular joint space prevent the use of large, solid drug delivery implants. Other investigators have explored the use of micro- and nanoparticle drug delivery systems...
June 12, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29905790/characterization-of-the-tissue-and-stromal-cell-components-of-micro-superficial-enhanced-fluid-fat-injection-micro-seffi-for-facial-aging-treatment
#9
Martina Rossi, Barbara Roda, Silvia Zia, Ilaria Vigliotta, Chiara Zannini, Francesco Alviano, Laura Bonsi, Andrea Zattoni, Pierluigi Reschiglian, Alessandro Gennai
Background: New microfat preparations provide material suitable for use as a regenerative filler for different facial areas. To support the development of new robust techniques for regenerative purposes, the cellular content of the sample should be considered. Objectives: To evaluate the stromal vascular fraction (SVF) cell components of micro-superficial enhanced fluid fat injection (SEFFI) samples via a technique to harvest re-injectable tissue with minimum manipulation...
June 14, 2018: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29905411/anti-inflammatory-and-antioxidant-effects-of-mesenchymal-and-hematopoietic-stem-cells-in-a-rheumatoid-arthritis-rat-model
#10
Hanan Abdelmawgoud, Asmaa Saleh
BACKGROUND: Mesenchymal stem cells (MSCs) are of increased importance because of their capacity to counteract inflammation and suppress host immune responses. OBJECTIVES: The aim of the study was to compare the effectiveness of MSCs and hematopoietic stem cells (HSCs) in the treatment of rheumatoid arthritis (RA). MATERIAL AND METHODS: Paw swelling was assessed by measuring the thickness of the hind paws using a caliper. Cytokines - interleukin (IL)-6, tumor necrosis factor-alpha (TNF-α), transforming growth factor-beta (TGF-β), and IL-10 - and rheumatoid factor (RF) were measured using enzyme-linked immunosorbent assay (ELISA) kits...
June 15, 2018: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29905361/treatment-of-osteoarthritis-with-collagen-based-scaffold-a-porcine-animal-model-with-xenograft-mesenchymal-stem-cells
#11
Wo-Ran Tzeng, Shu-Wei Huang, Chih-Hsiang Fang, Lih-Tao Hsu, Chih-Yu Chen, Hsin-Hsin Shen, Jenny Zwei-Chieng Chang, Jui-Sheng Sun, Feng-Huei Lin
OBJECTIVE: With the goal to explore a new approach to treat the early degenerative lesions of hyaline cartilage, we implanted in a porcine OA model a collagen-based scaffold containing chondroprogenitor cells derived from human bone marrow mesenchymal stem cells (hBM-MSCs). EXPERIMENTAL DESIGN: Porcine knee joints were subjected to anterior cruciate ligament (ACL) transection to surgically induce OA. After 4 months, the time necessary for the development of cartilage surface damage, animals were treated either with trephination bone plug wrapped with the chondroprogenic hBM-MSCs-embedded collagen scaffold or microfractures alone...
June 15, 2018: Histology and Histopathology
https://www.readbyqxmd.com/read/29905067/surface-functionalization-of-polymeric-nanoparticles-with-umbilical-cord-derived-mesenchymal-stem-cell-membrane-for-tumor-targeted-therapy
#12
Na Yang, Yanping Ding, Yinlong Zhang, Bin Wang, Xiao Zhao, Keman Cheng, Yixin Huang, Mohammad Taleb, Jing Zhao, Wen-Fei Dong, Lirong Zhang, Guangjun Nie
Multiple cell plasma membranes have been utilized for surface functionalization of synthetic nanomaterials and construction of biomimetic drug delivery systems for cancer treatment. The natural characters and facile isolation of original cells facilitate the biomedical applications of plasma membranes in functionalizing nanocarriers. Human umbilical cord-derived mesenchymal stem cells (MSC) have been identified to show tropism towards malignant lesions and have great advantages in ease of acquisition, low immunogenicity, and high proliferative ability...
June 15, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29905055/-effect-of-chitosan-porous-scaffolds-combined-with-bone-marrow-mesenchymal-stem-cells-in-repair-of-neurological-deficit-after-traumatic-brain-injury-in-rats
#13
Keke Tan, Xiuxiu Wang, Jun Zhang, Zhigang Zhuang, Tieli Dong
Objective: To investigate the possibility and effect of chitosan porous scaffolds combined with bone marrow mesenchymal stem cells (BMSCs) in repair of neurological deficit after traumatic brain injury (TBI) in rats. Methods: BMSCs were isolated, cultured, and passaged by the method of bone marrow adherent culture. The 3rd generation BMSCs were identified by the CD29 and CD45 surface antigens and marked by 5-bromo-2-deoxyuridine (BrdU). The chitosan porous scaffolds were produced by the method of freeze-drying...
June 1, 2018: Chinese Journal of Reparative and Reconstructive Surgery
https://www.readbyqxmd.com/read/29904979/platinum-sensitivity-of-ovarian-cancer-cells-does-not-influence-their-ability-to-induce-m2-type-macrophage-polarization
#14
Agata Mlynska, Egle Povilaityte, Inga Zemleckaite, Karolina Zilionyte, Marius Strioga, Jan Krasko, Neringa Dobrovolskiene, Mei-Wen Peng, Birute Intaite, Vita Pasukoniene
PROBLEM: Development of platinum resistance in ovarian cancer is mediated by both cancer cells and tumor microenvironment. Activation of epithelial-mesenchymal transition program in cancer cells may lead to enrichment for resistant clones. These processes can be affected by tumor-associated macrophages, a highly plastic population of cells that participate in tumor progression and response to treatment by shaping the microenvironment. We aimed to study how platinum resistance influences the crosstalk between macrophages and ovarian cancer cells...
June 14, 2018: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29904927/mesenchymal-stromal-cells-from-amniotic-fluid-are-less-prone-to-senescence-compared-to-those-obtained-from-bone-marrow-an-in-vitro-study
#15
Nicola Alessio, Caterina Pipino, Domitilla Mandatori, Pamela Di Tomo, Angela Ferone, Marco Marchiso, Mariarosa A B Melone, Gianfranco Peluso, Assunta Pandolfi, Umberto Galderisi
Mesenchymal stromal cells (MSCs) are considered to be an excellent source in regenerative medicine. They contain several cell subtypes, including multipotent stem cells. MSCs are of particular interest as they are currently being tested using cell and gene therapies for a number of human diseases. They represent a rare population in tissues; for this reason, they require, before being transplanted, an in vitro amplification. This process may induce replicative senescence, thus affecting differentiation and proliferative capacities...
June 15, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29904629/temporal-changes-in-nucleus-morphology-lamin-a-c-and-histone-methylation-during-nanotopography-induced-neuronal-differentiation-of-stem-cells
#16
Soneela Ankam, Benjamin K K Teo, Grace Pohan, Shawn W L Ho, Choon K Lim, Evelyn K F Yim
Stem cell differentiation can be regulated by biophysical cues such as nanotopography. It involves sensing and integration of these biophysical cues into their transcriptome with a mechanism that is yet to be discovered. In addition to the cytoskeletal and focal adhesion remodeling, nanotopography has also been shown to modulate nucleus morphology. Here, we studied the effect of nanotopography on the temporal changes in nuclei of human embryonic stem cells (hESCs) and human mesenchymal stem cells (hMSCs). Using a high throughput Multi-architecture (MARC) chip analysis, the circularity of the stem cell nuclei changed significantly on different patterns...
2018: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/29904430/expression-profile-of-micrornas-following-bone-marrow-derived-mesenchymal-stem-cell-treatment-in-lipopolysaccharide-induced-acute-lung-injury
#17
Joonhong Park, Sikyoung Jeong, Kicheol Park, Keumjin Yang, Soyoung Shin
Immunomodulatory or immunosuppressive properties of bone marrow-derived mesenchymal stem cells (BM-MSCs) facilitate the treatment of acute respiratory distress syndrome and acute lung injury (ALI). Dysregulated miRNA (miRNA or miR) expression associated with the effects of BM-MSCs was assessed in a rat model of lipopolysaccharide (LPS)-induced ALI. The present study performed biochemical tests to assess five analytes, including alanine aminotransferase (ALT), aspartate aminotransferase (AST), lactate, blood urea nitrogen (BUN), and creatinine (CREA)...
June 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29904415/tgf-%C3%AE-1-combined-with-sal-b-promotes-cardiomyocyte-differentiation-of-rat-mesenchymal-stem-cells
#18
Yang Lv, Bo Liu, Yuan Liu, Haoyu Wang, Haiping Wang
Transforming growth factor β1 (TGF-β1) and salvianolic acid B (Sal-B) are key signaling factors for stem cell differentiation into cardiomyocytes (CMs). The present study compared the biological effect of TGF-β1 and Sal-B, alone or in combination, on bone marrow mesenchymal stromal cells (BMSCs) that differentiate into myocardial-like cells in a simulated myocardial microenvironment in vitro . BMSCs were isolated from bones of limbs of 10 male Sprague Dawley rats and cultured. The 2nd-generation BMSCs were co-incubated with TGF-β1 and Sal-B, alone or in combination, for 72 h...
June 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29904409/effects-of-hsya-on-the-proliferation-and-apoptosis-of-mscs-exposed-to-hypoxic-and-serum-deprivation-conditions
#19
Xiaoqing Song, Lining Su, Haifeng Yin, Jin Dai, Huiping Wei
As a primary active ingredient of safflor yellow, hydroxysafflor yellow A (HSYA) exhibits notable antioxidative and neuroprotective effects. The aim of the present study was to investigate the protective effects of HSYA in mesenchymal stem cells (MSCs) exposed to hypoxia (5% O2 ) and serum deprivation (H/SD), and to explore the mechanisms underlying HSYA-mediated protection. Under H/SD conditions, HSYA was applied to protect MSCs against injury. Cell viability, proliferation, apoptosis and reactive oxygen species (ROS) levels were determined using an 5-ethynyl-2'-deoxyuridine assay, MTT assay, Hoechst 33342/propidium iodide and 2',7'-dichlorodihydrofluorescein diacetate staining, respectively...
June 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29904354/paracrine-anti-inflammatory-effects-of-adipose-tissue-derived-mesenchymal-stem-cells-in-human-monocytes
#20
Maria I Guillén, Julia Platas, María D Pérez Del Caz, Vicente Mirabet, Maria J Alcaraz
The inflammatory process is an essential phenomenon in the induction of immune responses. Monocytes are key effector cells during the inflammatory process. A wide range of evidence indicates that mesenchymal stem cells from adipose tissue (ASC) are endowed with immunomodulatory capacity. However, the interaction between ASC and monocytes in the innate immune response is not well understood. The aim of this work was to investigate the possible paracrine anti-inflammatory effects of ASC in human monocytes. Monocytes were isolated from buffy coats and ASC from fat of non-obese patients...
2018: Frontiers in Physiology
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