Effects of growth factors on heparin-carrying polystyrene-coated atelocollagen scaffold for articular cartilage tissue engineering

2007 ◽  
Vol 83B (1) ◽  
pp. 181-188 ◽  
Author(s):  
Masato Sato ◽  
Masayuki Ishihara ◽  
Miya Ishihara ◽  
Nagatoshi Kaneshiro ◽  
Genya Mitani ◽  
...  
2003 ◽  
Vol 9 (4) ◽  
pp. 597-611 ◽  
Author(s):  
Robert L. Mauck ◽  
Steven B. Nicoll ◽  
Sara L. Seyhan ◽  
Gerard A. Ateshian ◽  
Clark T. Hung

2009 ◽  
Vol 21 (03) ◽  
pp. 149-155 ◽  
Author(s):  
Hsu-Wei Fang

Cartilage injuries may be caused by trauma, biomechanical imbalance, or degenerative changes of joint. Unfortunately, cartilage has limited capability to spontaneous repair once damaged and may lead to progressive damage and degeneration. Cartilage tissue-engineering techniques have emerged as the potential clinical strategies. An ideal tissue-engineering approach to cartilage repair should offer good integration into both the host cartilage and the subchondral bone. Cells, scaffolds, and growth factors make up the tissue engineering triad. One of the major challenges for cartilage tissue engineering is cell source and cell numbers. Due to the limitations of proliferation for mature chondrocytes, current studies have alternated to use stem cells as a potential source. In the recent years, a lot of novel biomaterials has been continuously developed and investigated in various in vitro and in vivo studies for cartilage tissue engineering. Moreover, stimulatory factors such as bioactive molecules have been explored to induce or enhance cartilage formation. Growth factors and other additives could be added into culture media in vitro, transferred into cells, or incorporated into scaffolds for in vivo delivery to promote cellular differentiation and tissue regeneration.Based on the current development of cartilage tissue engineering, there exist challenges to overcome. How to manipulate the interactions between cells, scaffold, and signals to achieve the moderation of implanted composite differentiate into moderate stem cells to differentiate into hyaline cartilage to perform the optimum physiological and biomechanical functions without negative side effects remains the target to pursue.


2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Er-Yuan Chuang ◽  
Chih-Wei Chiang ◽  
Pei-Chun Wong ◽  
Chih-Hwa Chen

The treatment of articular cartilage damage is a major task in the medical science of orthopedics. Hydrogels possess the ability to form multifunctional cartilage grafts since they possess polymeric swellability upon immersion in an aqueous phase. Polymeric hydrogels are capable of physiological swelling and greasing, and they possess the mechanical behavior required for use as articular cartilage substitutes. The chondrogenic phenotype of these materials may be enhanced by embedding living cells. Artificial hydrogels fabricated from biologically derived and synthesized polymeric materials are also used as tissue-engineering scaffolds; with their controlled degradation profiles, the release of stimulatory growth factors can be achieved. In order to make use of these hydrogels, cartilage implants were formulated in the laboratory to demonstrate the bionic mechanical behaviors of physiological cartilage. This paper discusses developments concerning the use of polymeric hydrogels for substituting injured cartilage tissue and assisting tissue growth. These gels are designed with consideration of their polymeric classification, mechanical strength, manner of biodegradation, limitations of the payload, cellular interaction, amount of cells in the 3D hydrogel, sustained release for the model drug, and the different approaches for incorporation into adjacent organs. This article also summarizes the different advantages, disadvantages, and the future prospects of hydrogels.


2011 ◽  
Vol 7 (12) ◽  
pp. 4187-4194 ◽  
Author(s):  
Wei-Bor Tsai ◽  
Wen-Tung Chen ◽  
Hsiu-Wen Chien ◽  
Wei-Hsuan Kuo ◽  
Meng-Jiy Wang

Author(s):  
Christopher J. O’Conor ◽  
Kenneth W. Ng ◽  
Lindsay E. Kugler ◽  
Gerard A. Ateshian ◽  
Clark T. Hung

Agarose has been used as an experimental scaffold for cartilage tissue engineering research due to its biocompatibility with chondrocytes, support of cartilage tissue development, and ability to transmit mechanical stimuli [1–3]. Tissue engineering studies have demonstrated that the temporal application of transforming growth factor (TGF) β3 for only 2 weeks elicits rapid tissue development that results in mechanical properties approaching native values [4]. However, it is not known whether this response to a 2-week exposure to growth factors is unique to TGF-β3. Therefore, the present study characterizes the response of tissue engineered cartilage to the temporal application of the anabolic growth factors TGF-β1, TGF-β3, and insulin-like growth factor I (IGF-I).


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