A Versatile Strategy for Isolating a Highly Enriched Population of Intestinal Stem Cells

Area of Science:

• Stem cell biology
• Gastrointestinal research
• Molecular biology

Background:

• Isolating pure mouse intestinal stem cells (ISCs) is vital for studying tissue homeostasis, regeneration, and diseases.
• Current methods primarily rely on transgenic reporter alleles, which can impact cell function.

Purpose of the Study:

• To develop a novel method for isolating functional ISCs without reporter genes.
• To enable ISC isolation in reporter-free mice, avoiding potential genetic complications.

Main Methods:

• A combinational cell surface marker-mediated strategy was employed.
• This approach was validated against the established Lgr5-GFP reporter system.

Main Results:

• The new strategy successfully isolated an ISC population.
• These ISCs were transcriptionally and functionally equivalent to Lgr5-GFP ISCs.
• Isolation was achieved in reporter-free mice, yielding functional ISCs unaffected by Lgr5 haploinsufficiency.

Conclusions:

• A non-transgenic method for isolating functional ISCs has been established.
• This strategy offers a valuable alternative for ISC research, particularly in reporter-free models.
• The findings facilitate deeper investigation into ISC biology and related pathologies.