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Different isolation methods alter the gene expression profiling of adipose derived stem cells.
Nareshwaran Gnanasegaran1, Vijayendran Govindasamy2, Sabri Musa3
11. Regenerative Dentistry Research Group (ReDReG), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
International Journal of Medical Sciences
|March 27, 2014
Summary
Human adipose stem cells (ASCs) isolated via liposuction or biopsy show similar growth and differentiation. However, distinct gene expression profiles suggest varied lineage potentials, impacting regenerative therapy applications.
Area of Science:
- Regenerative Medicine
- Stem Cell Biology
- Cellular Therapeutics
Background:
- Human adipose stem cells (ASCs) are a key source of mesenchymal stem cells (MSCs) for regenerative medicine.
- Current isolation methods include liposuction and tissue biopsy, with efficiency comparisons lacking.
- Understanding isolation-based differences is crucial for optimizing ASCs in therapy.
Purpose of the Study:
- To compare ASCs isolated by liposuction versus tissue biopsy.
- To evaluate differences in growth kinetics, in vitro differentiation, and gene expression.
- To determine the impact of isolation method on ASC lineage potential.
Main Methods:
- Isolation of ASCs using liposuction and tissue biopsy techniques.
- Assessment of cell growth kinetics and tri-lineage differentiation (osteogenesis, adipogenesis, chondrogenesis).
- Flow cytometry for surface marker analysis (CD44, CD73, CD90, CD166, CD34, CD45, HLA-DR) and gene expression profiling.
Main Results:
- ASCs from both methods exhibited comparable growth kinetics and tri-lineage differentiation potential.
- Both cell populations expressed MSC markers (CD44+, CD73+, CD90+, CD166+) and lacked hematopoietic/endothelial markers (CD34-, CD45-, HLA-DR-).
- Distinct gene expression patterns were observed: liposuction-derived ASCs showed endoderm lineage propensity, while biopsy-derived ASCs leaned towards mesoderm/ectoderm.
Conclusions:
- Liposuction and biopsy yield comparable ASCs in terms of basic growth and differentiation.
- Differential gene expression suggests distinct lineage predispositions based on isolation method.
- Further research into these gene functions is needed to tailor ASC applications in regenerative therapy.
