Tissue Source and Cell Expansion Condition Influence Phenotypic Changes of Adipose-Derived Stem Cells

Area of Science:

• Regenerative Medicine
• Stem Cell Biology
• Tissue Engineering

Background:

• Adipose-derived stem cells (ASCs) from debrided burned skin are promising for regenerative medicine.
• Fetal bovine serum (FBS) in traditional cell culture poses challenges for human clinical applications.
• Human platelet lysate (hPL) offers a potential xeno-free alternative for ASC culture.

Purpose of the Study:

• To compare adipogenic and osteogenic differentiation of human ASCs (HAP and BH) cultured with FBS versus hPL.
• To evaluate the impact of culture supplements on ASC surface marker expression and differentiation potential.
• To assess the influence of ASC source and culture conditions on regenerative applications.

Main Methods:

• Human ASCs from abdominoplasty (HAP) and debrided burned skin (BH) were cultured with 10% FBS or 10% hPL.
• Flow cytometry was used to analyze cell surface marker expression (CD73, CD90, CD105, CD142).
• Adipogenic and osteogenic differentiation potential was assessed by measuring triglyceride content, gene expression, ALP activity, and osteogenic marker expression.

Main Results:

• FBS culture showed high expression of CD73, CD90, CD105, and CD142, with increased adipogenic gene expression and triglyceride content.
• hPL culture significantly reduced CD105 and CD142 expression in both HAP and BH ASCs.
• BH-ASCs cultured in hPL exhibited increased osteogenic marker expression and ALP activity.

Conclusions:

• The source of ASCs (e.g., burned skin) and culture supplement (FBS vs. hPL) significantly influence their differentiation potential and surface marker expression.
• hPL affects ASC characteristics, potentially altering their suitability for specific regenerative medicine applications.
• Careful consideration of ASC source and culture conditions is crucial before clinical use in wound healing and regenerative therapies.