Abstract
The present work describes the influence of both vitamin C (VC) and mechanical stimulation on development of the extracellular matrix (ECM) and improvement in mechanical properties of a chondrocyte-agarose construct in a regenerating tissue disease model of hyaline cartilage. We used primary bovine chondrocytes and two types of VC, ascorbic acid (AsA) as an acidic form and ascorbic acid 2-phosphate (A2P) as a non-acidic form, and applied uniaxial compressive strain to the tissue model using a purpose-built bioreactor. When added to the medium in free-swelling culture conditions, A2P downregulated development of ECM and suppressed improvement of the tangent modulus more than AsA. By contrast, application of mechanical stimulation to the construct both increased the tangent modulus more than the free-swelling group containing A2P and enhanced the ECM network of inner tissue to levels nearly as high as the free-swelling group containing AsA. Thus, mechanical stimulation and strain appears to enhance the supply of nutrients and improve the synthesis of ECM via mechanotransduction pathways of chondrocytes. Therefore, we suggest that mechanical stimulation is necessary for homogenous development of ECM in a cell-associated construct with a view to implantation of a large-sized articular cartilage defect.
| Original language | English |
|---|---|
| Pages (from-to) | 724-729 |
| Number of pages | 6 |
| Journal | Biochemical and Biophysical Research Communications |
| Volume | 424 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Aug 10 2012 |
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All Science Journal Classification (ASJC) codes
- Biochemistry
- Biophysics
- Cell Biology
- Molecular Biology
Cite this
Effects of both vitamin C and mechanical stimulation on improving the mechanical characteristics of regenerated cartilage. / Omata, Seiji; Sonokawa, Shogo; Sawae, Yoshinori; Murakami, Teruo.
In: Biochemical and Biophysical Research Communications, Vol. 424, No. 4, 10.08.2012, p. 724-729.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Effects of both vitamin C and mechanical stimulation on improving the mechanical characteristics of regenerated cartilage
AU - Omata, Seiji
AU - Sonokawa, Shogo
AU - Sawae, Yoshinori
AU - Murakami, Teruo
PY - 2012/8/10
Y1 - 2012/8/10
N2 - The present work describes the influence of both vitamin C (VC) and mechanical stimulation on development of the extracellular matrix (ECM) and improvement in mechanical properties of a chondrocyte-agarose construct in a regenerating tissue disease model of hyaline cartilage. We used primary bovine chondrocytes and two types of VC, ascorbic acid (AsA) as an acidic form and ascorbic acid 2-phosphate (A2P) as a non-acidic form, and applied uniaxial compressive strain to the tissue model using a purpose-built bioreactor. When added to the medium in free-swelling culture conditions, A2P downregulated development of ECM and suppressed improvement of the tangent modulus more than AsA. By contrast, application of mechanical stimulation to the construct both increased the tangent modulus more than the free-swelling group containing A2P and enhanced the ECM network of inner tissue to levels nearly as high as the free-swelling group containing AsA. Thus, mechanical stimulation and strain appears to enhance the supply of nutrients and improve the synthesis of ECM via mechanotransduction pathways of chondrocytes. Therefore, we suggest that mechanical stimulation is necessary for homogenous development of ECM in a cell-associated construct with a view to implantation of a large-sized articular cartilage defect.
AB - The present work describes the influence of both vitamin C (VC) and mechanical stimulation on development of the extracellular matrix (ECM) and improvement in mechanical properties of a chondrocyte-agarose construct in a regenerating tissue disease model of hyaline cartilage. We used primary bovine chondrocytes and two types of VC, ascorbic acid (AsA) as an acidic form and ascorbic acid 2-phosphate (A2P) as a non-acidic form, and applied uniaxial compressive strain to the tissue model using a purpose-built bioreactor. When added to the medium in free-swelling culture conditions, A2P downregulated development of ECM and suppressed improvement of the tangent modulus more than AsA. By contrast, application of mechanical stimulation to the construct both increased the tangent modulus more than the free-swelling group containing A2P and enhanced the ECM network of inner tissue to levels nearly as high as the free-swelling group containing AsA. Thus, mechanical stimulation and strain appears to enhance the supply of nutrients and improve the synthesis of ECM via mechanotransduction pathways of chondrocytes. Therefore, we suggest that mechanical stimulation is necessary for homogenous development of ECM in a cell-associated construct with a view to implantation of a large-sized articular cartilage defect.
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U2 - 10.1016/j.bbrc.2012.07.019
DO - 10.1016/j.bbrc.2012.07.019
M3 - Article
VL - 424
SP - 724
EP - 729
JO - Biochemical and Biophysical Research Communications
JF - Biochemical and Biophysical Research Communications
SN - 0006-291X
IS - 4
ER -