Isolation of Murine Adipose-Derived Stromal/Stem Cells Using an Explant Culture Method

Area of Science:

• Stem Cell Biology
• Tissue Engineering
• Regenerative Medicine

Background:

• Adipose tissue is a rich source of stem cells for various applications.
• Current collagenase digestion methods for isolating adipose-derived stromal/stem cells (ASCs) often yield insufficient cell numbers, particularly from small samples like newborn mice.
• A need exists for improved protocols to enhance ASC isolation efficiency.

Purpose of the Study:

• To introduce and validate an efficient explant culture protocol for isolating and expanding ASCs.
• To provide an alternative method that circumvents the limitations of enzymatic digestion for small adipose tissue samples.

Main Methods:

• Adipose tissue samples were minced after excess liquid removal.
• Minced tissue was placed in culture dishes or flasks without enzymatic treatment.
• Cells were allowed to migrate out of the tissue explants and adhere to the culture surface.

Main Results:

• The explant culture method facilitates cell migration and adherence from adipose tissue.
• This protocol offers an alternative for obtaining ASCs, especially when sample size is limited.
• The method is presented as an efficient way to isolate and expand ASCs.

Conclusions:

• Explant culture is an effective alternative for ASC isolation and expansion.
• This method improves cell yield compared to traditional enzymatic digestion for small tissue samples.
• The protocol is valuable for studies requiring ASCs from limited tissue sources, such as newborn animal models.