Document Detail

Cryopreservation effect on proliferative and chondrogenic potential of human chondrocytes isolated from superficial and deep cartilage.
MedLine Citation:
PMID:  22523526     Owner:  NLM     Status:  PubMed-not-MEDLINE    
OBJECTIVES: To compare the proliferative and chondrogenic potential of fresh and frozen chondrocytes isolated from superficial and deep articular cartilage biopsies.
MATERIALS AND METHODOLOGY: The study included 12 samples of fresh and frozen healthy human knee articular cartilage. Cell proliferation was tested at 3, 6 and 9 days. Studies of mRNA quantification, protein expression and immunofluorescence for proliferation and chondrogenic markers were performed.
RESULTS: Stimulation of fresh and frozen chondrocytes from both superficial and deep cartilage with fetal bovine serum produced an increase in the proliferative capacity compared to the non-stimulated control group. In the stimulated fresh cells group, the proliferative capacity of cells from the deep biopsy was greater than that from cells from the superficial biopsy (0.046 vs 0.028, respectively, p<0.05). There was also a significant difference between the proliferative capacity of superficial zone fresh (0.028) and frozen (0.051) chondrocytes (p<0.05). CCND1 mRNA and protein expression levels, and immunopositivity for Ki67 revealed a higher proliferative capacity for fresh articular chondrocytes from deep cartilage. Regarding the chondrogenic potential, stimulated fresh cells showed higher SOX9 and Col II expression in chondrocytes from deep than from superficial zone (p<0.05, T student test).
CONCLUSIONS: The highest rate of cell proliferation and chondrogenic potential of fresh chondrocytes was found in cells obtained from deep cartilage biopsies, whereas there were no statistically significant differences in proliferative and chondrogenic capacity between biopsy origins with frozen chondrocytes. These results indicate that both origin and cryopreservation affect the proliferative and chondrogenic potential of chondrocytes.
Emma Muiños-López; M Esther Rendal-Vázquez; Tamara Hermida-Gómez; Isaac Fuentes-Boquete; Silvia Díaz-Prado; Francisco J Blanco
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Publication Detail:
Type:  Journal Article     Date:  2012-04-06
Journal Detail:
Title:  The open orthopaedics journal     Volume:  6     ISSN:  1874-3250     ISO Abbreviation:  Open Orthop J     Publication Date:  2012  
Date Detail:
Created Date:  2012-04-23     Completed Date:  2012-08-23     Revised Date:  2013-05-29    
Medline Journal Info:
Nlm Unique ID:  101480491     Medline TA:  Open Orthop J     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  150-9     Citation Subset:  -    
CIBER-BBN-Cellular Therapy Area, Spain.
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