scholarly journals Gene Expression of Type I and Type III Collagen by Mechanical Stretch in Anterior Cruciate Ligament Cells

2002 ◽  
Vol 27 (3) ◽  
pp. 139-144 ◽  
Author(s):  
Sung-Gon Kim ◽  
Toshihiro Akaike ◽  
Tadashi Sasagawa ◽  
Yoriko Atomi ◽  
Hisashi Kurosawa
Keyword(s):  
Gene Expression ◽  
Anterior Cruciate Ligament ◽  
Cruciate Ligament ◽  
Mechanical Stretch ◽  
Type Iii Collagen ◽  
Type I ◽  
Type Iii ◽  
Anterior Cruciate

scholarly journals Cruciate Ligament Cell Sheets Can Be Rapidly Produced on Thermoresponsive poly(glycidyl ether) Coating and Successfully Used for Colonization of Embroidered Scaffolds

Cells ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 877
Author(s):  
Ingrid Zahn ◽  
Daniel David Stöbener ◽  
Marie Weinhart ◽  
Clemens Gögele ◽  
Annette Breier ◽  
...  
Keyword(s):  
Gene Expression ◽  
Type I Collagen ◽  
Cruciate Ligament ◽  
Glycidyl Ether ◽  
Stable Gene ◽  
Type I ◽  
Cell Sheets ◽  
Thermoresponsive Polymers ◽  
Related Phenotype ◽  
Anterior Cruciate

Anterior cruciate ligament (ACL) cell sheets combined with biomechanically competent scaffolds might facilitate ACL tissue engineering. Since thermoresponsive polymers allow a rapid enzyme-free detachment of cell sheets, we evaluated the applicability of a thermoresponsive poly(glycidyl ether) (PGE) coating for cruciate ligamentocyte sheet formation and its influence on ligamentocyte phenotype during sheet-mediated colonization of embroidered scaffolds. Ligamentocytes were seeded on surfaces either coated with PGE or without coating. Detached ligamentocyte sheets were cultured separately or wrapped around an embroidered scaffold made of polylactide acid (PLA) and poly(lactic-co-ε-caprolactone) (P(LA-CL)) threads functionalized by gas-phase fluorination and with collagen foam. Ligamentocyte viability, protein and gene expression were determined in sheets detached from surfaces with or without PGE coating, scaffolds seeded with sheets from PGE-coated plates and the respective monolayers. Stable and vital ligamentocyte sheets could be produced within 24 h with both surfaces, but more rapidly with PGE coating. PGE did not affect ligamentocyte phenotype. Scaffolds could be colonized with sheets associated with high cell survival, stable gene expression of ligament-related type I collagen, decorin, tenascin C and Mohawk after 14 d and extracellular matrix (ECM) deposition. PGE coating facilitates ligamentocyte sheet formation, and sheets colonizing the scaffolds displayed a ligament-related phenotype.

Differential expression of type I and type III collagen genes during tooth development

Development ◽  
1991 ◽  
Vol 111 (3) ◽  
pp. 691-698
Author(s):  
M.B. Andujar ◽  
P. Couble ◽  
M.L. Couble ◽  
H. Magloire
Keyword(s):  
Gene Expression ◽  
Type I Collagen ◽  
Tooth Development ◽  
Expression Patterns ◽  
Type Iii Collagen ◽  
Type I ◽  
Collagen Gene ◽  
Type Iii ◽  
Collagen Gene Expression ◽  
Collagen Genes

Collagen gene expression during mouse molar tooth development was studied by quantitative in situ hybridization techniques. Different expression patterns of type I and type III collagen mRNAs were observed in the various mesenchymal tissues that constitute the tooth germ. High concentration for pro-alpha 1(I) and pro-alpha 2(I) collagen mRNAs were found within the osteoblasts. We found that the cellular content of type I collagen mRNAs in the odontoblasts varies throughout the tooth formation: whereas mRNA concentration for pro-alpha 1(I) collagen decreases and that of pro-alpha 2(I) increases, during postnatal development. Moreover, different amounts of pro-alpha 1(I) and pro-alpha 2(I) collagen mRNAs were observed in crown and root odontoblasts, respectively. Type III collagen mRNAs were detected in most of the mesenchymal cells, codistributed with type I collagen mRNAs, except in odontoblasts and osteoblasts. Finally, this study reports differential accumulation of collagen mRNAs during mouse tooth development and points out that type I collagen gene expression is regulated by distinct mechanisms during odontoblast differentiation process. These results support the independent expression of the collagen genes under developmental tissue-specific control.

scholarly journals Combined Effects of Estrogen and Mechanical Loading on Anterior Cruciate Ligament Fibroblast Biosynthesis

2005 ◽  
Vol 5 ◽  
pp. 5-8 ◽  
Author(s):  
Xuhui Liu ◽  
Zong-Ping Luo
Keyword(s):  
Gene Expression ◽  
Extracellular Matrix ◽  
Anterior Cruciate Ligament ◽  
Mechanical Loading ◽  
Cruciate Ligament ◽  
Combined Effects ◽  
Extracellular Matrix Component ◽  
Matrix Component ◽  
Negative Role ◽  
Anterior Cruciate

For some time, estrogen has been suspected to play a negative role in anterior cruciate ligament (ACL) fibroblast biosynthesis; however, reports on this issue have been controversial. In a recent study, our group demonstrated a negative combined effect of estrogen and mechanical loading on the gene expression of major extracellular matrix component molecules in ACL fibroblasts.

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