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chondrogenesis

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https://www.readbyqxmd.com/read/29047310/reserve-or-resident-progenitors-in-cartilage-comparative-analysis-of-chondrocytes-versus-chondroprogenitors-and-their-role-in-cartilage-repair
#1
Elizabeth Vinod, P R J V C Boopalan, Solomon Sathishkumar
Introduction Articular cartilage is made up of hyaline tissue embodying chondrocytes, which arise from mesenchymal stromal cells (MSCs) and specialized extracellular matrix. Despite possessing resident progenitors in and around the joint primed for chondrogenesis, cartilage has limited intrinsic capacity of repair and cell turnover. Advances in isolation, culture, and characterization of these progenitors have raised the possibility for their use in cell-based cartilage repair. Chondroprogenitors (CPCs) have been classified as MSCs and have been postulated to play a vital role in injury response and are identified by their colony forming ability, proliferative potential, telomere dynamics, multipotency, and expression of stem cell markers...
October 1, 2017: Cartilage
https://www.readbyqxmd.com/read/29039590/microrna%C3%A2-218-promotes-prostaglandin-e2-to-inhibit-osteogenic-differentiation-in-synovial-mesenchymal-stem-cells-by-targeting-15%C3%A2-hydroxyprostaglandin-dehydrogenase-nad
#2
Ruijun Cong, Kun Tao, Peiliang Fu, Lieming Lou, Yuchang Zhu, Song Chen, Xinyu Cai, Lingzhou Mao
The chondrogenic differentiation of synovial mesenchymal stem cells (SMSCs) is regulated by essential transcription factors and signaling cascades. However, the precise mechanisms involved in this process remain unclear. MicroRNAs (miRs/miRNAs) are undersized non‑coding RNAs responsible for the post‑transcriptional regulation of gene expression, by binding to the 3'‑untranslated regions (3'‑UTRs) of their target mRNAs. miRNAs may constitute a promising tool to regulate SMSC differentiation and to advance the controlled differentiation of SMSCs in therapeutic applications...
October 17, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29038440/mir-29b-regulates-expression-of-collagens-i-and-iii-in-chondrogenically-differentiating-bmsc-in-an-osteoarthritic-environment
#3
Ute Mayer, Achim Benditz, Susanne Grässel
Osteoarthritis (OA) is characterized by a slowly progressing, irreversible loss of articular cartilage. Tissue engineering approaches for cartilage regeneration include stem cell-based strategies but not much is known about their repair capacity in an OA microenvironment. The aim of the present study was to identify factors regulating collagen expression during chondrogenic differentiation of bone marrow-derived mesenchymal stem cells (BMSC) in an OA microenvironment. Coculture with OA cartilage induced miR-29b expression in BMSC which inhibited collagen I and III expression...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29028133/addendum-to-cartilage-specific-autophagy-deficiency-promotes-er-stress-and-impairs-chondrogenesis-in-perk-atf4-chop-dependent-manner
#4
Xiaomin Kang, Wei Yang, Dongxu Feng, Xinxin Jin, Zhengmin Ma, Zhuang Qian, Tianping Xie, Huixia Li, Jiali Liu, Ruiqi Wang, Fang Li, Danhui Li, Hongzhi Sun, Shufang Wu
No abstract text is available yet for this article.
October 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29028070/gene-expression-in-human-adipose-derived-stem-cells-comparison-of-2d-films-3d-electrospun-meshes-or-co-cultured-scaffolds-with-two-way-paracrine-effects
#5
S C Hess, W J Stark, D Mohn, N Cohrs, S Märsmann, M Calcagni, P Cinelli, J Buschmann
Finding the appropriate cues to trigger the desired differentiation is a challenge in tissue engineering when stem cells are involved. In this regard, three-dimensional environments are often compared to cells' two-dimensional culture behaviour (plastic culture dish). Here, we compared the gene expression pattern of human adipose-derived stem cells (ASC) seeded in a three-dimensional (3D) electrospun mesh and on a two-dimensional (2D) film - both of exactly the same material. Additionally, we conducted experiments with a scaffold floating above a film to investigate two-way paracrine effects (co-system)...
October 13, 2017: European Cells & Materials
https://www.readbyqxmd.com/read/29027711/expansion-of-mesenchymal-stem-cells-on-electrospun-scaffolds-maintains-stemness-mechano-responsivity-and-differentiation-potential
#6
Su-Jin Heo, Spencer E Szczesny, Dong Hwa Kim, Kamiel S Saleh, Robert L Mauck
Mesenchymal stem cells (MSCs) hold great promise for regenerative therapies and tissue engineering applications given their multipotential differentiation capacity. However, MSC isolation and expansion are typically performed on super-physiologically stiff tissue culture plastic (TCP), which may alter their behavior and lead to unintended consequences upon implantation. In contrast, electrospun nanofibrous scaffolds possess physical and mechanical properties that are similar to that of native tissue. In this study, we investigated whether isolation and expansion of juvenile bovine MSCs directly onto electrospun nanofibrous scaffolds better preserves MSC phenotype and stemness compared to TCP...
October 13, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29024060/loss-of-dnmt3b-in-chondrocytes-leads-to-delayed-endochondral-ossification-and-fracture-repair
#7
Cuicui Wang, Yousef Abu-Amer, Regis J O'Keefe, Jie Shen
Despite advanced understanding of signaling mediated by local and systemic factors, the role of epigenetic factors in the regulation of bone regeneration remains vague. The DNA methyltransferases (Dnmts) Dnmt3a and Dnmt3b have tissue specific expression patterns and create unique methylation signatures to regulate gene expression. Using a stabilized murine tibia fracture model we find that Dnmt3b is induced early in fracture healing, peaks at 10 days post fracture (dpf), and declines to nearly undetectable levels by 28 dpf...
October 10, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29019756/imaging-of-skeletal-disorders-caused-by-fibroblast-growth-factor-receptor-gene-mutations
#8
Kiran M Sargar, Achint K Singh, Simon C Kao
Fibroblast growth factors and fibroblast growth factor receptors (FGFRs) play important roles in human axial and craniofacial skeletal development. FGFR1, FGFR2, and FGFR3 are crucial for both chondrogenesis and osteogenesis. Mutations in the genes encoding FGFRs, types 1-3, are responsible for various skeletal dysplasias and craniosynostosis syndromes. Many of these disorders are relatively common in the pediatric population, and diagnosis is often challenging. These skeletal disorders can be classified based on which FGFR is affected...
October 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29017973/modulating-microfibrillar-alignment-and-growth-factor-stimulation-to-regulate-mesenchymal-stem-cell-differentiation
#9
Dinorath Olvera, Binulal N Sathy, Simon F Carroll, Daniel J Kelly
The ideal tissue engineering (TE) strategy for ligament regeneration should recapitulate the bone - calcified cartilage - fibrocartilage - soft tissue interface. Aligned electrospun-fibers have been shown to guide the deposition of a highly organized extracellular matrix (ECM) necessary for ligament TE. However, recapitulating the different tissues observed in the bone-ligament interface using such constructs remains a challenge. This study aimed to explore how fiber alignment and growth factor stimulation interact to regulate the chondrogenic and ligamentous differentiation of mesenchymal stem cells (MSCs)...
October 7, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28980022/-current-overview-of-cartilage-regeneration-procedures
#10
REVIEW
H Schenker, M Wild, B Rath, M Tingart, A Driessen, V Quack, M Betsch
BACKGROUND: Cartilage is an avascular, alymphatic and non-innervated tissue with limited intrinsic repair potential. The high prevalence of cartilage defects and their tremendous clinical importance are a challenge for all treating physicians. AIM: This article provides the reader with an overview about current cartilage treatment options and their clinical outcome. METHODS: Microfracture is still considered the gold standard in the treatment of small cartilage lesions...
October 4, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28979686/methylation-mediated-silencing-of-mir-124-facilitates-chondrogenesis-by-targeting-nfatc1-under-hypoxic-conditions
#11
Ming Gong, Tangzhao Liang, Song Jin, Xuejun Dai, Zhiyu Zhou, Manman Gao, Sheng Huang, Jiaquan Luo, Lijin Zou, Xuenong Zou
Chondrogenic differentiation of mesenchymal stem cells is regulated by many different pathways. Recent studies have established that hypoxia and epigenetic alterations potently affect expression of chondrogenesis marker genes. Sox9 is generally regarded as a master regulator of chondrogenesis and microRNA-124 (miRNA-124) regulates gene expression in murine bone marrow-derived mesenchymal stem cells. Therefore, in this study we investigated whether epigenetic regulation of miRNA-124 could affect the expression of Sox9 and thereby regulate chondrogenesis...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28978269/human-mesenchymal-stem-cells-pre-treated-with-il-1%C3%AE-and-stimulated-with-bmp-3-enhance-chondrogenesis
#12
Daphne Hingert, Helena Barreto Henriksson, Helena Brisby
BACKGROUND: Low back pain is one of the most common ailments in western countries afflicting more than 80% of the population and the main cause is considered to be degeneration of intervertebral discs (IVDs). IL-1β is a vital inflammatory cytokine found in abundance in degenerated disc environment whereas BMP-3 is believed to promote chondrogenesis through TGF-β pathway. AIM: The aim was to study the effects of BMP-3, IL-1β and combination (pre-treatment with IL-1β) on hMSCs encapsulated in PuraMatrix™ hydrogel (Phg) especially in the absence of TGF-β in order to investigate the proliferation, and differentiation ability of hMSCs over 28 days period...
October 5, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28975034/the-periosteal-requirement-and-temporal-dynamics-of-bmp2-induced-middle-phalanx-regeneration-in-the-adult-mouse
#13
Lindsay A Dawson, Ling Yu, Mingquan Yan, Luis Marrero, Paula P Schanes, Connor Dolan, Maegan Pela, Britta Petersen, Manjong Han, Ken Muneoka
Regeneration of mammalian limbs is restricted to amputation of the distal digit tip, the terminal phalanx (P3). The adjacent skeletal element, the middle phalanx (P2), has emerged as a model system to investigate regenerative failure and as a site to test approaches aimed at enhancing regeneration. We report that exogenous application of bone morphogenetic protein 2 (BMP2) stimulates the formation of a transient cartilaginous callus distal to the amputation plane that mediates the regeneration of the amputated P2 bone...
June 2017: Regeneration
https://www.readbyqxmd.com/read/28963080/cartilage-derived-retinoic-acid-sensitive-protein-cd-rap-a-stage-specific-biomarker-of-heterotopic-endochondral-ossification-heo-in-fibrodysplasia-ossificans-progressiva-fop
#14
Carter M Lindborg, Tracy A Brennan, Haitao Wang, Frederick S Kaplan, Robert J Pignolo
BACKGROUND: Genesis of a cartilaginous scaffold is an obligate precursor to bone formation in heterotopic endochondral ossification (HEO). We tested the hypothesis that cartilage-derived retinoic acid-sensitive protein (CD-RAP) can serve as a plasma biomarker for the pre-osseous cartilaginous stage of HEO. Palovarotene, a retinoic acid receptor-gamma (RARγ) agonist, has been proposed as a possible treatment for fibrodysplasia ossificans progressiva (FOP) and is a potent inhibitor of HEO in mouse models...
September 28, 2017: Bone
https://www.readbyqxmd.com/read/28958480/protein-profiling-and-angiogenic-effect-of-hypoxia-cultured-human-umbilical-cord-blood-derived-mesenchymal-stem-cells-in-hindlimb-ischemia
#15
Kyu-Hyun Han, Ae-Kyeong Kim, Min-Hee Kim, Do-Hyung Kim, Ha-Nl Go, Donglim Kang, Jong Wook Chang, Soon Won Choi, Kyung-Sun Kang, Dong-Ik Kim
The aim of the present study was to investigate protein profiles of human umbilical cord blood-derived mesenchymal stem cells (hUCB-MSCs) cultured in normoxic (21% O2) and hypoxic (1% O2) conditions, and evaluate oxygenation effects on angiogenesis in an ischemic hindlimb mouse model using a modified ischemic scoring system. Hypoxic conditions did not change the expression of phenotypic markers and increased adipogenesis and chondrogenesis. Epidermal growth factor (EGF), transforming growth factor alpha (TGF-α), TGF-β RII, and vascular endothelial growth factor (VEGF) were upregulated in the conditioned medium of hypoxic hUCB-MSCs, which are commonly related to angiogenesis and proliferation of biological processes by Gene Ontology...
September 20, 2017: Tissue & Cell
https://www.readbyqxmd.com/read/28956208/a-novel-glucosamine-derivative-with-low-cytotoxicity-enhances-chondrogenic-differentiation-of-atdc5
#16
Hang Yao, Jingchen Xue, Renjian Xie, Sa Liu, Yingjun Wang, Wenjing Song, Dong-An Wang, Li Ren
Glucosamine (GlcN) is a component of native cartilage extracellular matrix and useful in cartilage repair, but it was limited by toxicity in high concentrations. With the aim of altering bioactive properties of GlcN to reduce the toxicity and to facilitate chondrogenesis for hyaline cartilage formation, we introduced an amino-group modification with double bond into GlcN to produce N-acryloyl-glucosamine (AGA). The cell ATDC5 was chosen to evaluate its cytotoxicity and chondrogenesis capability. Cell proliferation and cytotoxicity assay showed that AGA had significantly reduced the cytotoxicity compared to GlcN, and promoted ATDC5 proliferation...
September 27, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28956086/-ankle-cartilage-repair-therapeutic-options-results-and-technical-aspects
#17
REVIEW
S Anders, J Götz, J Grifka, C Baier
BACKGROUND: Therapeutic strategies for cartilage repair of the talus are varied. With the use of biologic scaffolds and biologic agents new cell-based therapies have become the focus of attention. OBJECTIVES: Ankle cartilage repair techniques are presented and assessed by current data. In addition, technical notes for each technique are given. MATERIAL AND METHODS: Currently, the following established ankle cartilage repair procedures exist: microfracturing, AMIC (autologous matrix-induced chondrogenesis), OCT (osteochondral transplantation, mosaicplasty), allograft transplantation...
September 27, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28949384/distal-less-homeobox-5-is-a-master-regulator-of-the-osteogenesis-of-human-mesenchymal-stem-cells
#18
June Seok Heo, Seung Gwan Lee, Hyun Ok Kim
Mesenchymal stem cells (MSCs) differentiate into multiple lineages and are a promising source of cells for clinical use. Previously, we found that the gene distal‑less homeobox 5 (DLX5) is specifically expressed in MSCs with osteogenic potential. Understanding the mechanism of osteogenesis is necessary for successful bone regeneration using MSCs. The aim of this study was to examine the function of the DLX5 gene in MSCs during osteogenesis (bone development). We analyzed the possible association between DLX5 expression and osteogenesis-, chondrogenesis- and adipogenesis-related gene expression in different cells isolated from bone marrow and cord blood...
September 19, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28939894/plasticity-of-human-meniscus-fibrochondrocytes-a-study-on-effects-of-mitotic-divisions-and-oxygen-tension
#19
Yan Liang, Enaam Idrees, Stephen H J Andrews, Kirollos Labib, Alexander Szojka, Melanie Kunze, Andrea D Burbank, Aillette Mulet-Sierra, Nadr M Jomha, Adetola B Adesida
Meniscus fibrochondrocytes (MFCs) may be the optimal cell source to repair non-healing meniscus injuries using tissue engineering strategies. In this study, we investigated the effects of mitotic divisions and oxygen tension on the plasticity of adult human MFCs. Our assessment techniques included gene expression, biochemical, histological, and immunofluorescence assays. MFCs were expanded in monolayer culture with combined growth factors TGFβ1 and FGF-2 (T1F2) under normoxia (21% O2). Trilineage (adipogenesis, chondrogenesis and osteogenesis) differentiation was performed under both normoxic (21% O2) and hypoxic (3% O2) conditions...
September 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28934877/activin-and-nodal-are-not-suitable-alternatives-to-tgf%C3%AE-for-chondrogenic-differentiation-of-mesenchymal-stem-cells
#20
Laurie M G de Kroon, Esmeralda N Blaney Davidson, Roberto Narcisi, Eric Farrell, Peter M van der Kraan, Gerjo J V M van Osch
Objective Previously, we demonstrated the importance of transforming growth factor-β (TGFβ)-activated SMAD2/3 signaling in chondrogenesis of bone marrow-derived mesenchymal stem cells (BMSCs). However, TGFβ also signals via the SMAD1/5/9 pathway, which is known to induce terminal differentiation of BMSCs. In this study, we investigated whether other SMAD2/3-activating ligands, Activin and Nodal, can induce chondrogenic differentiation of BMSCs without inducing terminal differentiation. Design Activation of SMAD2/3 signaling and chondrogenesis were evaluated in human BMSCs ( N = 3 donors) stimulated with TGFβ, Activin, or Nodal...
October 2017: Cartilage
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