Adv Pharm Bull. 2017;7(1):123-130.
doi: 10.15171/apb.2017.016
PMID: 28507946
PMCID: PMC5426725
Scopus id: 85017548165
  Abstract View: 210
  PDF Download: 182

Research Article

Conditioned Medium of Wharton's Jelly Derived Stem Cells Can Enhance the Cartilage Specific Genes Expression by Chondrocytes in Monolayer and Mass Culture Systems

Maryam Hassan Famian 1, Soheila Montazer Saheb 2, Azadeh Montaseri 2 *

1 Department of molecular biology, Ahar Branch, Islamic Azad University, Ahar, Iran.
2 Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.


Purpose: Mesenchymal stem cells (MSCs) have been introduced for cell therapy strategies in osteoarthritis (OA). Despite of their capacity for differentiation into chondrocyte, there are some evidences about their life-threatening problem after transplantation. So, some researchers shifted on the application of stem cells conditioned medium. The goal of this study is to evaluate whether Wharton's jelly derived stem cell conditioned medium (WJSCs-CM) can enhance the gene expression profile by chondrocytes in monolayer and mass culture systems.

Methods: Conditioned medium was obtained from WJSCs at fourth passage. Isolated chondrocytes were plated at density of 1×106 for both monolayer and high density culture. Then cells in both groups were divided into control (received medium) and experiment group treated with WJ-CM for 3 and 6 days. Samples were prepared to evaluate gene expression profile of collagen II, aggrecan, cartilage oligomeric matrix protein (COMP) and sox-9 using real-time RT-PCR.

Results: After 3 days, Chondrocytes treated with WJSCs-CM expressed significantly higher level of genes compared to the control group in both culture systems. After 6 days, the expression of genes in monolayer cultivated chondrocytes was decreased but that of the mass culture were up-regulated significantly.

Conclusion: WJ-SCs-CM can increase the expression of cartilage-specific genes and can be introduced as a promoting factor for cartilage regeneration.


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Submitted: 21 Nov 2016
Revised: 28 Feb 2017
Accepted: 07 Mar 2017
First published online: 13 Apr 2017
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