Cells scaffold complex for Intervertebral disc Anulus Fibrosus tissue engineering: in vitro culture and product analysis.
The study was designed to investigate feasibility of tissue culture in vitro utilizing static culture method. Annulus fibrosus cells obtained from spine of rabbits were cultured. Results showed that fibrous tissue infiltration could be detected in shallow layer. With extended time, tissue infiltration depth increased, but there were still a large amount of holes in central part. Fibrous tissue infiltration was detected in the control side products and inner infiltration wasn't obvious. Hydroxyproline content of the control side products gradually increased with extended culture time. Hydroxyproline content of the control side products in the third and fourth month was significantly higher than that in the first month, but lower than those of the experimental side products and normal annulus fibrosus cells. DNA content of the control side products in the third and fourth month was significantly increased compared to the first month. DNA content of the control side products at each phase point was significantly lower than that of the experimental side and normal annulus fibrosus cells. Furthermore, there was lower expression levels of the type I, II collagen mRNA and protein in the experimental side scaffolds compared to the control side product. This study demonstrates the successful formation of Intervertebral disc Anulus Fibrosus in vitro by static culture method.
Department of Orthopaedics, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, China.
Yong
Y
Pan
Tongwei
T
Chu
Shiwu
S
Dong
Yong
Y
Hao
Xianjun
X
Ren
Jian
J
Wang
Weidong
W
Wang
Changqing
C
Li
Zhengfeng
Z
Zhang
Yue
Y
Zhou
D000818:Animals; D018929:Cell Culture Techniques; D024042:Collagen Type I / Q000235:genetics / Q000378:metabolism; D024043:Collagen Type II / Q000235:genetics / Q000378:metabolism; D015870:Gene Expression; D006909:Hydroxyproline / Q000737:chemistry; D007403:Intervertebral Disc / Q000378:metabolism*; D012333:RNA, Messenger / Q000378:metabolism; D011817:Rabbits; D023822:Tissue Engineering; D054457:Tissue Scaffolds / Q000737:chemistry
D024042:Collagen Type I; D024043:Collagen Type II; D012333:RNA, Messenger; D006909:Hydroxyproline