NDLI: Alteration of gene expression levels during osteogenic induction of human adipose derived stem cells in long-term culture

Content Provider	Springer Nature Link
Author	Safwani, Wan Kamarul Zaman Wan Makpol, Suzana Sathapan, Somasundaram Chua, Kien Hui
Copyright Year	2012
Abstract	Adipose tissue is a source of multipotent stem cells and it has the ability to differentiate into several types of cell lineages such as neuron cells, osteogenic and adipogenic cells. Most studies on human adipose-derived stem cells (ASCs) have been carried out at the early passages. For clinical usage, ASCs need to be expanded in vitro for a period of time to get sufficient cells for transplantation into patients. However, the impact of long-term culture on ASCs molecular characteristics has not been established yet. Several studies have also shown that osteogenic and adipogenic cells have the ability to switch pathways during in vitro culture as they share the same progenitor cells. This data is important to ensure their functionality and efficacy before being used clinically in the treatment of bone diseases. Therefore, we aim to investigate the effect of long-term culture on the adipogenic, stemness and osteogenic genes expression during osteogenic induction of ASCs. In this study, the molecular characteristics of ASCs during osteogenic induction in long-term culture was analysed by observing their morphological changes during induction, analysis of cell mineralization using Alizarin Red staining and gene expression changes using quantitative RT-PCR. Morphologically, cell mineralization at P20 was less compared to P5, P10 and P15. Adipogenesis was not observed as negative lipid droplets formation was recorded during induction. The quantitative PCR data showed that adipogenic genes expression e.g. LPL and AP2 decreased but PPAR-γ was increased after osteogenic induction in long-term culture. Most stemness genes decreased at P5 and P10 but showed no significant changes at P15 and P20. While most osteogenic genes increased after osteogenic induction at all passages. When compared among passages after induction, Runx showed a significant increased at P20 while BSP, OSP and ALP decreased at later passage (P15 and P20). During long-term culture, ASCs were only able to differentiate into immature osteogenic cells.
Starting Page	289
Ending Page	301
Page Count	13
File Format	PDF
ISSN	13899333
Journal	Cell and Tissue Banking
Volume Number	14
Issue Number	2
e-ISSN	15736814
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-04-05
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Gene expression Human adipose derived stem cells Long-term culture Osteogenesis Stemness Cell Biology Biomedicine general Transplant Surgery
Content Type	Text
Resource Type	Article
Subject	Cell Biology Biomaterials Transplantation Biomedical Engineering

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