scholarly journals Chondrogenic Differentiation of Human Adipose-Derived Stem Cells: A New Path in Articular Cartilage Defect Management?

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Jan-Philipp Stromps ◽  
Nora Emilie Paul ◽  
Björn Rath ◽  
Mahtab Nourbakhsh ◽  
Jürgen Bernhagen ◽  
...  

According to data published by the Centers for Disease Control and Prevention, over 6 million people undergo a variety of medical procedures for the repair of articular cartilage defects in the U.S. each year. Trauma, tumor, and age-related degeneration can cause major defects in articular cartilage, which has a poor intrinsic capacity for healing. Therefore, there is substantial interest in the development of novel cartilage tissue engineering strategies to restore articular cartilage defects to a normal or prediseased state. Special attention has been paid to the expansion of chondrocytes, which produce and maintain the cartilaginous matrix in healthy cartilage. This review summarizes the current efforts to generate chondrocytes from adipose-derived stem cells (ASCs) and provides an outlook on promising future strategies.

Biomaterials ◽  
2006 ◽  
Vol 27 (14) ◽  
pp. 2882-2889 ◽  
Author(s):  
Dirk Barnewitz ◽  
Michaela Endres ◽  
Ina Krüger ◽  
Anja Becker ◽  
Jürgen Zimmermann ◽  
...  

Author(s):  
Hadeer A. Abbassy ◽  
Laila M. Montaser ◽  
Sherin M. Fawzy

<p class="abstract">Musculoskeletal medicine targets both cartilage regeneration and healing of soft tissues. Articular cartilage repair and regeneration is primarily considered to be due to its poor regenerative properties. Cartilage defects due to joint injury, aging, or osteoarthritis have low self-repair ability thus they are most often irreversible as well as being a major cause of joint pain and chronic disability. Unfortunately, current methods do not seamlessly restore hyaline cartilage and may lead to the formation of fibro- or continue hypertrophic cartilage. Deficiency of efficient modalities of therapy has invited research to combine stem cells, scaffold materials and environmental factors through tissue engineering. Articular cartilage tissue engineering aims to repair, regenerate, and hence improve the function of injured or diseased cartilage. This holds great potential and has evoked intense interest in improving cartilage therapy. Platelet-rich plasma (PRP) and/or stem cells may be influential for tissue repair as well as cartilage regenerative processes.  A great promise to advance current cartilage therapies toward achieving a consistently successful modality has been held for addressing cartilage afflictions. The use of stem cells, novel biologically inspired scaffolds and, emerging nanotechnology may be the best way to reach this objective via tissue engineering. A current and emergent approach in the field of cartilage tissue engineering is explained in this review for specific application. In the future, the development of new strategies using stem cells seeded in scaffolds and the culture medium supplemented with growth factors could improve the quality of the newly formed cartilage<span lang="EN-IN">.</span></p>


2015 ◽  
Vol 308 (9) ◽  
pp. C685-C696 ◽  
Author(s):  
Shun-Cheng Wu ◽  
Hsu-Feng Hsiao ◽  
Mei-Ling Ho ◽  
Yung-Li Hung ◽  
Je-Ken Chang ◽  
...  

Effectively directing the chondrogenesis of adipose-derived stem cells (ADSCs) to engineer articular cartilage represents an important challenge in ADSC-based articular cartilage tissue engineering. The discoidin domain receptor 1 (DDR1) has been shown to affect cartilage homeostasis; however, little is known about the roles of DDR1 in ADSC chondrogenesis. In this study, we used the three-dimensional culture pellet culture model system with chondrogenic induction to investigate the roles of DDR1 in the chondrogenic differentiation of human ADSCs (hADSCs). Real-time polymerase chain reaction and Western blot were used to detect the expression of DDRs and chondrogenic genes. Sulfated glycosaminoglycan (sGAG) was detected by Alcian blue and dimethylmethylene blue (DMMB) assays. Terminal deoxy-nucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) staining was used to assess cell death. During the chondrogenesis of hADSCs, the expression of DDR1 but not DDR2 was significantly elevated. The depletion of DDR1 expression in hADSCs using short hairpin RNA increased the expression of chondrogenic genes (SOX-9, collagen type II, and aggrecan) and cartilaginous matrix deposition (collagen type II and sGAG) and only slightly increased cell death (2–8%). DDR1 overexpression in hADSCs decreased the expression of chondrogenic genes (SOX-9, collagen type II, and aggrecan) and sGAG and enhanced hADSC survival. Moreover, DDR1-depleted hADSCs showed decreased expression of the terminal differentiation genes runt-related transcription factor 2 (Runx2) and matrix metalloproteinase 13 (MMP-13). These results suggest that DDR1 suppression may enhance ADSC chondrogenesis by enhancing the expression of chondrogenic genes and cartilaginous matrix deposition. We proposed that the suppression of DDR1 in ADSCs may be a candidate strategy of genetic modification to optimize ADSC-based articular cartilage tissue engineering.


Author(s):  
Zhong Li ◽  
Yikang Bi ◽  
Qi Wu ◽  
Chao Chen ◽  
Lu Zhou ◽  
...  

AbstractTo evaluate the performance of a composite scaffold of Wharton’s jelly (WJ) and chondroitin sulfate (CS) and the effect of the composite scaffold loaded with human umbilical cord mesenchymal stem cells (hUCMSCs) in repairing articular cartilage defects, two experiments were carried out. The in vitro experiments involved identification of the hUCMSCs, construction of the biomimetic composite scaffolds by the physical and chemical crosslinking of WJ and CS, and testing of the biomechanical properties of both the composite scaffold and the WJ scaffold. In the in vivo experiments, composite scaffolds loaded with hUCMSCs and WJ scaffolds loaded with hUCMSCs were applied to repair articular cartilage defects in the rat knee. Moreover, their repair effects were evaluated by the unaided eye, histological observations, and the immunogenicity of scaffolds and hUCMSCs. We found that in vitro, the Young’s modulus of the composite scaffold (WJ-CS) was higher than that of the WJ scaffold. In vivo, the composite scaffold loaded with hUCMSCs repaired rat cartilage defects better than did the WJ scaffold loaded with hUCMSCs. Both the scaffold and hUCMSCs showed low immunogenicity. These results demonstrate that the in vitro construction of a human-derived WJ-CS composite scaffold enhances the biomechanical properties of WJ and that the repair of knee cartilage defects in rats is better with the composite scaffold than with the single WJ scaffold if the scaffold is loaded with hUCMSCs.


Author(s):  
Andrea R. Tan ◽  
Elena Alegre-Aguarón ◽  
Divya N. Dujari ◽  
Sonal R. Sampat ◽  
J. Chloë Bulinski ◽  
...  

Strategies for cartilage tissue engineering and repair have recently focused on cell sources from the surrounding joint tissue as an alternative to chondrocytes. Synovium-derived stem cells (SDSCs) are found in the intimal layer of the synovium, the thin overlying capsule surrounding the joint space [1] and have been found to exhibit a greater chondrogenic potential than stem cells from other origins such as bone marrow stem cells or adipose derived stem cells [2–4]. Under directed cues, these cells have been shown to be capable of migrating from the synovium membrane into articular cartilage defects, though the mechanism behind such movement is unclear. As a first step, we have previously shown that SDSCs expanded in 2D monolayer culture in a growth factor cocktail of TGF-β1, FGF, and PDGF-ββ exhibit directed cathodal migration with perpendicular alignment when under the influence of an applied DC electric field [5]. As cellular behavior and response to an external stimulus can change with exposure to growth factors and passage number, we look here to characterize the effects of passaging on the migration response of SDSCs to an applied electric field. We hypothesize that if these cells develop more chondrocyte-like characteristics with growth factor passaging, their response will mimic that which has previously been reported for chondrocytes, notably directed cathodal (negative pole) migration and perpendicular realignment of the long axis to the direction of applied field [6].


2014 ◽  
pp. 87-97
Author(s):  
Andrea Preitschopf ◽  
Julia Busch ◽  
Hannes Zwickl ◽  
Stefan Nehrer ◽  
Markus Hengstschläger ◽  
...  

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