Abstract
Current forays into tissue engineering of articular cartilage in vitro using the self-assembling method have produced constructs possessing significant extracellular matrix and resulting mechanical properties. However, large numbers of native articular chondrocytes are necessary to produce functional engineered cartilage; all previous work with the self-assembling process has used 5.5 × 106 cells/construct. In this study, the effects of initial cell seeding (0.25-11 × 106 cells/construct) on tissue quality were investigated. Results showed that tissue engineered articular cartilage was formed, when using at least 2 million cells/construct, possessing dimensional, compositional, and compressive properties approaching those of native tissue. It was noted that higher seeding contributed to thicker constructs with larger diameters and had a significant effect on resulting biochemical and biomechanical properties. It was further observed that aggregate modulus increased with increased seeding. By combining gross morphological, histological, biochemical, and biomechanical results, an optimal initial seeding for the self-assembling process of 3.75 × 106 cells/construct was identified. This finding enhances the translatability of this tissue engineering process by reducing the number of cells needed for tissue engineering of articular cartilage by 32% while maintaining essential tissue properties.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1441-1448 |
| Number of pages | 8 |
| Journal | Annals of Biomedical Engineering |
| Volume | 36 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 2008 |
| Externally published | Yes |
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Keywords
- Aggregate modulus
- Biochemical functionality
- Seeding density
- Tissue engineering
ASJC Scopus subject areas
- Biomedical Engineering
Cite this
Effects of initial cell seeding in self assembly of articular cartilage. / Revell, Christopher M.; Reynolds, Catherine E.; Athanasiou, Kyriacos A.
In: Annals of Biomedical Engineering, Vol. 36, No. 9, 09.2008, p. 1441-1448.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of initial cell seeding in self assembly of articular cartilage
AU - Revell, Christopher M.
AU - Reynolds, Catherine E.
AU - Athanasiou, Kyriacos A.
PY - 2008/9
Y1 - 2008/9
N2 - Current forays into tissue engineering of articular cartilage in vitro using the self-assembling method have produced constructs possessing significant extracellular matrix and resulting mechanical properties. However, large numbers of native articular chondrocytes are necessary to produce functional engineered cartilage; all previous work with the self-assembling process has used 5.5 × 106 cells/construct. In this study, the effects of initial cell seeding (0.25-11 × 106 cells/construct) on tissue quality were investigated. Results showed that tissue engineered articular cartilage was formed, when using at least 2 million cells/construct, possessing dimensional, compositional, and compressive properties approaching those of native tissue. It was noted that higher seeding contributed to thicker constructs with larger diameters and had a significant effect on resulting biochemical and biomechanical properties. It was further observed that aggregate modulus increased with increased seeding. By combining gross morphological, histological, biochemical, and biomechanical results, an optimal initial seeding for the self-assembling process of 3.75 × 106 cells/construct was identified. This finding enhances the translatability of this tissue engineering process by reducing the number of cells needed for tissue engineering of articular cartilage by 32% while maintaining essential tissue properties.
AB - Current forays into tissue engineering of articular cartilage in vitro using the self-assembling method have produced constructs possessing significant extracellular matrix and resulting mechanical properties. However, large numbers of native articular chondrocytes are necessary to produce functional engineered cartilage; all previous work with the self-assembling process has used 5.5 × 106 cells/construct. In this study, the effects of initial cell seeding (0.25-11 × 106 cells/construct) on tissue quality were investigated. Results showed that tissue engineered articular cartilage was formed, when using at least 2 million cells/construct, possessing dimensional, compositional, and compressive properties approaching those of native tissue. It was noted that higher seeding contributed to thicker constructs with larger diameters and had a significant effect on resulting biochemical and biomechanical properties. It was further observed that aggregate modulus increased with increased seeding. By combining gross morphological, histological, biochemical, and biomechanical results, an optimal initial seeding for the self-assembling process of 3.75 × 106 cells/construct was identified. This finding enhances the translatability of this tissue engineering process by reducing the number of cells needed for tissue engineering of articular cartilage by 32% while maintaining essential tissue properties.
KW - Aggregate modulus
KW - Biochemical functionality
KW - Seeding density
KW - Tissue engineering
UR - http://www.scopus.com/inward/record.url?scp=49149119457&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=49149119457&partnerID=8YFLogxK
U2 - 10.1007/s10439-008-9524-x
DO - 10.1007/s10439-008-9524-x
M3 - Article
C2 - 18574692
AN - SCOPUS:49149119457
VL - 36
SP - 1441
EP - 1448
JO - Annals of Biomedical Engineering
JF - Annals of Biomedical Engineering
SN - 0090-6964
IS - 9
ER -