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Isolation and Culture of Human Mature Adipocytes Using Membrane Mature Adipocyte Aggregate Cultures (MAAC)
Published on: February 13, 2020
The cellular plasticity of human adipocytes
Sunil S Tholpady1, Chongdee Aojanepong, Ramon Llull
1Department of Neurosurgery, University of Virginia, Charlottesville, VA, USA.
Annals of Plastic Surgery
|May 19, 2005
Summary
Mature fat cells (adipocytes) can dedifferentiate into fibroblast-like cells and then redifferentiate. This cellular plasticity offers insights into fat grafting and tissue engineering.
Area of Science:
- Cell Biology
- Tissue Engineering
- Regenerative Medicine
Background:
- Free-fat transfer is widely used for soft tissue implantation but often results in graft volume loss.
- Histological analysis shows mature adipocytes are replaced by fibroblast-like cells, suggesting a complex biological response.
Purpose of the Study:
- To investigate the hypothesis that mature adipocytes undergo dedifferentiation in vitro.
- To explore the potential for dedifferentiated adipocytes to redifferentiate.
Main Methods:
- Mature human adipocytes were isolated from liposuctioned adipose tissue and cultured in vitro.
- Morphological changes, including lipid content and cell appearance, were monitored over time.
- Dedifferentiated cells were subjected to adipogenic induction to assess redifferentiation capacity.
Main Results:
- Cultured adipocytes progressively lost intracellular lipid over time.
- Adipocytes transformed into fibroblast-like cells and proliferated.
- Dedifferentiated cells successfully reaccumulated lipid upon adipogenic induction.
Conclusions:
- Mature adipocytes exhibit significant cellular plasticity, capable of dedifferentiation and subsequent redifferentiation.
- This demonstrates that fibroblast-like cells observed in fat grafts may originate from dedifferentiated adipocytes.
- Understanding this plasticity could improve free-fat transfer outcomes and advance tissue-engineering strategies.
