A human preadipocyte cell strain with multipotent differentiation capability as an in vitro model for adipogenesis

Area of Science:

• Cell Biology
• Stem Cell Research
• Adipogenesis

Background:

• Murine 3T3 cell lines are standard for in vitro adipogenesis studies but do not fully represent human adipose biology.
• Existing human cell models for adipogenesis lack universal acceptance, highlighting a need for a reliable model.

Purpose of the Study:

• To characterize the utility of a clonal human subcutaneous adipose stromal cell strain, IPI-SA3-C4, as an in vitro model for human adipogenesis.
• To assess the proliferative potential, genetic stability, and multipotency of the IPI-SA3-C4 cell line.

Main Methods:

• Isolation and characterization of a clonal human subcutaneous adipose stromal cell strain (IPI-SA3-C4).
• Assessment of proliferative potential, including serial passages, cumulative population doublings, and doubling time.
• Evaluation of pluripotency markers (POU5F1, NANOG, KLF4, MYC) and differentiation capacity into adipogenic, osteogenic, and chondrogenic lineages.

Main Results:

• IPI-SA3-C4 cells demonstrated high proliferative potential (≥30 passages, 70 cumulative population doublings) and genetic stability (diploid 46XY).
• Cells expressed pluripotency markers even at extended passages and maintained adipogenic capacity up to the 66th cumulative population doubling.
• IPI-SA3-C4 cells exhibited differentiation potential into adipogenic, osteogenic, and chondrogenic lineages under specific culture conditions.

Conclusions:

• The IPI-SA3-C4 cell line possesses characteristics suitable for an in vitro model of human subcutaneous adipogenesis.
• Its sustained proliferative capacity, genetic stability, and multipotency make it a promising candidate for future research in human adipose biology.