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https://www.readbyqxmd.com/read/28719650/heat-stimuli-enhanced-osteogenesis-using-clinically-available-biomaterials
#1
Takehiro Ota, Yoshihiro Nishida, Kunihiro Ikuta, Ryuji Kato, Eiji Kozawa, Shunsuke Hamada, Tomohisa Sakai, Naoki Ishiguro
A recent study reported that heat stress stimulates osteogenesis in an in vivo rat model using alginate gel and magnetite cationic liposomes. However, for clinical use, the efficacy for promoting osteogenesis needs to be investigated using clinically approved materials, and preferably with animals larger than rats. The aim of this study was to evaluate multiple heat stimuli-triggered osteogenesis in rat tibial defect models using already clinically applicable materials (Resovist® and REGENOS®) and determine the efficacy also in the rabbit...
2017: PloS One
https://www.readbyqxmd.com/read/28717408/sirt3-enhances-mesenchymal-stem-cell-longevity-and-differentiation
#2
Ryan A Denu
Mesenchymal stem cells (MSCs) are multipotent cells that are currently being investigated in a wide variety of clinical trials for their anti-inflammatory and immunomodulatory properties as well as their osteogenic and chondrogenic capabilities. However, there are considerable interdonor variability and heterogeneity of MSC populations, making it challenging to compare different products. Furthermore, proliferation, differentiation, and immunomodulation of MSCs decrease with aging and ex vivo expansion. The sirtuins have emerged as a class of protein deacylases involved in aging, oxidative stress, and metabolism...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28714568/exposure-to-reversine-affects-the-chondrocyte-morphology-and-phenotype-in-vitro
#3
S Gasparini, F Villa, L Molfetta, E Repaci, P Castagnola, R Quarto, P Giannoni
Articular chondrocytes derived from osteoarthritic tissues (OA-HAC) show a severely reduced chondrogenic commitment. This impairment undermines their use for tissue-engineered cartilage repair, which relies on cell proliferation and growth to meet the therapeutic needs but also on efficient cell plasticity to recover the chondrogenic phenotype. Reversine (Rev), a 2,6-disubstituted purine inhibitor of spindle-assembly checkpoints, was described to convert differentiated mesenchymal cells to their undifferentiated precursors...
July 17, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28714548/role-of-the-protease-corin-in-chondrogenic-differentiation-of-human-bone-marrow-derived-mesenchymal-stem-cells
#4
Haibin Zhou, Jinsong Zhu, Meng Liu, Qingyu Wu, Ningzheng Dong
Mesenchymal stem cells (MSCs) have the potency to differentiate into chondrocytes, osteocytes and adipocytes. Corin is a cardiac protease that activates the natriuretic peptides, thereby regulating blood volume and pressure. In addition to the heart, corin gene up-regulation was reported in bone marrow- and adipose tissue-derived MSCs that underwent osteogenic differentiation. To date, the biological significance of corin expression in MSC differentiation remains unknown. In this study, we isolated and cultured human bone marrow-derived MSCs that were capable of undergoing chondrogenic, osteogenic and adipogenic lineage differentiation...
July 17, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28714139/simple-radical-polymerization-of-poly-alginate-graft-n-isopropylacrylamide-injectable-thermoresponsive-hydrogel-with-the-potential-for-localized-and-sustained-delivery-of-stem-cells-and-bioactive-molecules
#5
Sreekanth Pentlavalli, Philip Chambers, Binulal N Sathy, Michelle O'Doherty, Marine Chalanqui, Daniel J Kelly, Tammy Haut-Donahue, Helen O McCarthy, Nicholas J Dunne
In this study, thermoresponsive copolymers that are fully injectable, biocompatible, and biodegradable and are synthesized via graft copolymerization of poly(N-isopropylacrylamide) onto alginate using a free-radical reaction are presented. This new synthesis method does not involve multisteps or associated toxicity issues, and has the potential to reduce scale-up difficulties. Chemical and physical analyses verify the resultant graft copolymer structure. The lower critical solution temperature, which is a characteristic of sol-gel transition, is observed at 32 °C...
July 17, 2017: Macromolecular Bioscience
https://www.readbyqxmd.com/read/28709984/micrometer-scale-guidance-of-mesenchymal-stem-cells-to-form-structurally-oriented-large-scale-tissue-engineered-cartilage
#6
Chih-Ling Chou, Alexander L Rivera, Valencia Williams, Jean F Welter, Joseph M Mansour, Judith A Drazba, Takao Sakai, Harihara Baskaran
Current clinical methods to treat articular cartilage lesions provide temporary relief of the symptoms but fail to permanently restore the damaged tissue. Tissue engineering, using mesenchymal stem cells (MSCs) combined with scaffolds and bioactive factors, is viewed as a promising method for repairing cartilage injuries. However, current tissue engineered constructs display inferior mechanical properties compared to native articular cartilage, which could be attributed to the lack of structural organization of the extracellular matrix (ECM) of these engineered constructs in comparison to the highly oriented structure of articular cartilage ECM...
July 11, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28708257/aquaporin1-and-3-modification-as-a-result-of-chondrogenic-differentiation-of-human-mesenchymal-stem-cell
#7
Adriana Carol Eleonora Graziano, Rosanna Avola, Giovanna Pannuzzo, Venera Cardile
Chondrocytes are cells of articular cartilage particularly sensitive to water transport and ionic and osmotic changes from extracellular environment and responsible for the production of the synovial fluid. Aquaporins (AQPs) are a family of water and small solute transport channel proteins identified in several tissues, involved in physiological pathways and in manifold human diseases. In a recent period, AQP1 and 3 seem to have a role in metabolic water regulation in articular cartilage of load bearing joints...
July 14, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28705915/microarray-analysis-of-bone-marrow-lesions-in-osteoarthritis-demonstrates-upregulation-of-genes-implicated-in-osteochondral-turnover-neurogenesis-and-inflammation
#8
Anasuya Kuttapitiya, Lena Assi, Ken Laing, Caroline Hing, Philip Mitchell, Guy Whitley, Abiola Harrison, Franklyn A Howe, Vivian Ejindu, Christine Heron, Nidhi Sofat
OBJECTIVE: Bone marrow lesions (BMLs) are well described in osteoarthritis (OA) using MRI and are associated with pain, but little is known about their pathological characteristics and gene expression. We evaluated BMLs using novel tissue analysis tools to gain a deeper understanding of their cellular and molecular expression. METHODS: We recruited 98 participants, 72 with advanced OA requiring total knee replacement (TKR), 12 with mild OA and 14 non-OA controls...
July 13, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28705606/regenerative-approaches-for-cartilage-repair-in-the-treatment-of-osteoarthritis
#9
REVIEW
Meihan Li, Rong Xiao, Jing B Li, Qing Zhu
Osteoarthritis (OA) as a debilitating affliction of joints currently affects millions of people and remains an unsolved problem. The disease involves multiple cellular and molecular pathways that converge on the progressive destruction of cartilage. Activation of cartilage regenerative potential and specific targeting pathogenic mediators have been the major focus of research efforts aimed at slowing the progression of cartilage degeneration and preserve joint function. This review will summarize recent key discoveries toward better understanding of the complex mechanisms behind OA development and highlight the latest advances in basic and clinical research in the approach for cartilage regeneration...
July 10, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28704566/development-and-characterization-of-a-human-three-dimensional-chondrosarcoma-culture-for-in-vitro-drug-testing
#10
Aurélien Voissiere, Elodie Jouberton, Elise Maubert, Françoise Degoul, Caroline Peyrode, Jean-Michel Chezal, Élisabeth Miot-Noirault
It has been suggested that chemoresistance of chondrosarcoma (CHS), the cartilage tumor, is caused by the phenotypic microenvironmental features of the tumor tissue, mainly the chondrogenic extracellular matrix (ECM), and hypoxia. We developed and characterized a multicellular tumor spheroid (MCTS) of human chondrosarcoma HEMC-SS cells to gain insight into tumor cell biology and drug response. At Day 7, HEMC-SS spheroids exhibited a homogeneous distribution of proliferative Ki-67 positive cells, whereas in larger spheroids (Day 14 and Day 20), proliferation was mainly localized in the periphery...
2017: PloS One
https://www.readbyqxmd.com/read/28703018/comparative-effectiveness-of-structural-versus-regulatory-protein-gene-transfer-on-articular-chondrocyte-matrix-gene-expression
#11
Shuiliang Shi, Congrong Wang, Albert Chan, Kashif Kirmani, George J Eckert, Stephen B Trippel
Objective The production of extracellular matrix is a necessary component of articular cartilage repair. Gene transfer is a promising method to improve matrix biosynthesis by articular chondrocytes. Gene transfer may employ transgenes encoding regulatory factors that stimulate the production of matrix proteins, or may employ transgenes that encode the proteins themselves. The objective of this study was to determine which of these 2 approaches would be the better choice for further development. We compared these 2 approaches using the transgenes encoding the structural matrix proteins, aggrecan or type II collagen, and the transgene encoding the anabolic factor, insulin-like growth factor I (IGF-I)...
July 1, 2017: Cartilage
https://www.readbyqxmd.com/read/28701175/isolation-and-characterization-of-equine-endometrial-mesenchymal-stromal-cells
#12
B Elisabeth Rink, Karin R Amilon, Cristina L Esteves, Hilari M French, Elaine Watson, Christine Aurich, F Xavier Donadeu
BACKGROUND: Equine mesenchymal stromal/stem cells (MSCs) are most commonly harvested from bone marrow (BM) or adipose tissue, requiring the use of surgical procedures. By contrast, the uterus can be accessed nonsurgically, and may provide a more readily available cell source. While human endometrium is known to harbor mesenchymal precursor cells, MSCs have not been identified in equine endometrium. This study reports the isolation, culture, and characterization of MSCs from equine endometrium...
July 12, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28696356/rapamycin-maintains-the-chondrocytic-phenotype-and-interferes-with-inflammatory-cytokine-induced-processes
#13
Andrea De Luna-Preitschopf, Hannes Zwickl, Stefan Nehrer, Markus Hengstschläger, Mario Mikula
Osteoarthritis (OA) is hallmarked by a progressive degradation of articular cartilage. Besides risk factors including trauma, obesity or genetic predisposition, inflammation has a major impact on the development of this chronic disease. During the course of inflammation, cytokines such as tumor necrosis factor-alpha(TNF-α) and interleukin (IL)-1β are secreted by activated chondrocytes as well as synovial cells and stimulate the production of other inflammatory cytokines and matrix degrading enzymes. The mTORC1 inhibitor rapamycin is a clinical approved immunosuppressant and several studies also verified its chondroprotective effects in OA...
July 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28690010/tailoring-surface-nanoroughness-of-electrospun-scaffolds-for-skeletal-tissue-engineering
#14
Honglin Chen, Xiaobin Huang, Minmin Zhang, Febriyani Damanik, Matthew B Baker, Anne Leferink, Huipin Yuan, Roman Truckenmüller, Clemens van Blitterswijk, Lorenzo Moroni
Electrospun scaffolds provide a promising approach for tissue engineering as they mimic the physical properties of extracellular matrix. Previous studies have demonstrated that electrospun scaffolds with porous features on the surface of single fibers, enhanced cellular attachment and proliferation. Yet, little is known about the effect of such topographical cues on cellular differentiation. Here, we aimed at investigating the influence of surface roughness of electrospun scaffolds on skeletal differentiation of human mesenchymal stromal cells (hMSCs)...
July 6, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28688892/vascular-ossification-pathology-mechanisms-and-clinical-implications
#15
Michael A Fuery, Lusha Liang, Frederick S Kaplan, Emile R Mohler
In recent years, the mechanisms and clinical significance of vascular calcification have been increasingly investigated. For over a century, however, pathologists have recognized that vascular calcification is a form of heterotopic ossification. In this review, we aim to describe the pathology and molecular processes of vascular ossification, to characterize its clinical significance and treatment options, and to elucidate areas that require further investigation. The molecular mechanisms of vascular ossification involve the activation of regulators including bone morphogenic proteins and chondrogenic transcription factors and the loss of mineralization inhibitors like fetuin-A and pyrophosphate...
July 5, 2017: Bone
https://www.readbyqxmd.com/read/28685538/the-origin-in-vitro-differentiation-and-stemness-specificity-of-progenitor-cells
#16
W Kranc, J Budna, M Dudek, A Bryja, A Chachuła, S Ciesiółka, S Borys, M Dyszkiewicz-Konwińska, M Jeseta, L Porowski, P Antosik, D Bukowska, K P Brüssow, M Bruska, M Nowicki, M Zabel, B Kempisty
Since the successful collection of the first progenitor stem cells (SCs), there has been an increased interest in these cells as a model for undiscovered and unlimited potential of differentiation and development. Additionally, it was shown that SC populations display an ability to form pluripotent and/or totipotent cell populations. It was found that human ovarian granulosa cells (GCs) maintain a large capacity for differentiation into several other cell lineages, such as chondrogenic, osteogenic, neurogenic, and adipogenic, particularly during long-term, in vitro culture...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28683651/arthroscopic-airbrush-assisted-cell-spraying-for-cartilage-repair-design-development-and-characterization-of-custom-made-arthroscopic-spray-nozzles
#17
Koen Dijkstra, Jan Hendriks, Marcel Karperien, Lucienne A Vonk, Daniel B Saris
INTRODUCTION: Airbrush-assisted cell spraying would facilitate fully arthroscopic filling of cartilage defects, thereby providing a minimally invasive procedure for cartilage repair. This study provides the development and characterisation of custom-made spray nozzles that could serve as a foundation for the development of a BioAirbrush, a platform technology for the arthroscopic application of (cell-laden) hydrogels. METHODS: Custom-made spray nozzles were designed and produced with 3D printing technology...
July 6, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28683650/effect-of-cell-sheet-manipulation-techniques-on-the-expression-of-collagen-type-ii-and-stress-fiber-formation-in-human-chondrocyte-sheets
#18
Sopita Wongin, Saranatra Waikakul, Pojchong Chotiyarnwong, Wanwipa Siriwatwechakul, Kwanchanok Viravaidya-Pasuwat
Cell sheet technology is applied to human articular chondrocytes to construct a tissue-like structure as an alternative treatment for cartilage defect. The effect of a gelatin manipulator, as a cell sheet transfer system, on the quality of the chondrocyte sheets was investigated. The changes of important chondrogenic markers and stress fibers, resulting from the cell sheet manipulation, were also studied. The chondrocyte cell sheets were constructed with patient-derived chondrocytes using a temperature-responsive polymer, and a gelatin manipulator as a transfer carrier...
July 6, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28676126/umbilical-cord-derived-mesenchymal-stromal-cells-predictive-obstetric-factors-for-cell-proliferation-and-chondrogenic-differentiation
#19
Léonore Avercenc-Léger, Philippe Guerci, Jean-Marc Virion, Ghislaine Cauchois, Sébastien Hupont, Rachid Rahouadj, Jacques Magdalou, Jean-François Stoltz, Danièle Bensoussan, Céline Huselstein, Loïc Reppel
BACKGROUND: The umbilical cord is becoming a notable alternative to bone marrow (BM) as a source of mesenchymal stromal cells (MSC). Although age-dependent variations in BM-MSC are well described, less data are available for MSC isolated from Wharton's jelly (WJ-MSC). We initiated a study to identify whether obstetric factors influenced MSC properties. We aimed to evaluate the correlation between a large number of obstetric factors collected during pregnancy and until peripartum (related to the mother, the labor and delivery, and the newborn) with WJ-MSC proliferation and chondrogenic differentiation parameters...
July 5, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28674107/long-noncoding-rna-dancr-regulates-mir-1305-smad-4-axis-to-promote-chondrogenic-differentiation-of-human-synovium-derived-stem-cells
#20
Lei Zhang, Xiangyi Sun, Shuo Chen, Chao Yang, Ben Shi, Liwu Zhou, Jianning Zhao
MicroRNAs (miRNAs) have been reported to regulate cellular differentiation by modulating multiple signaling pathways. Long noncoding RNA DANCR was previously identified to be critical for the chondrogenesis of human synovium-derived stem cells (SMSC), however, the underlying molecular mechanism requires better understanding. Here, miRNA expression profiling in DANCR overexpressed SMSCs identified significant down-regulation of miR-1305, which serves as a downstream target of DANCR. Notably, miR-1305 overexpression reversed DANCR induced cell proliferation and chondrogenic differentiation of SMSCs, which suggested that miR-1305 antagonized the function of DANCR...
July 3, 2017: Bioscience Reports
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