Human stem cells with in vivo high plasticity generated by cell-cell communication

Area of Science:

• Regenerative Medicine
• Stem Cell Biology
• Tissue Engineering

Background:

• Stem cells are crucial for tissue repair due to self-renewal and differentiation.
• Current stem cell therapies face limitations regarding differentiation potential and tumorigenicity.
• High plasticity is essential for transplanted stem cells to integrate and repair host tissues.

Purpose of the Study:

• To derive and characterize a novel type of high-plasticity adult stem cell.
• To evaluate the therapeutic potential of these new stem cells in vivo.
• To assess the safety profile, including immunogenicity and tumorigenicity, of the derived stem cells.

Main Methods:

• Derivation of guide-integrated adult stem cells (giaSCs) from adult blood-derived guide cells and umbilical cord tissue-derived mesenchymal stromal cells (UC-MSCs).
• Induction of giaSC formation via unidirectional transfer of granular substances from guide cells to UC-MSCs through nanotube-like structures.
• In vivo transplantation of human giaSCs into mouse models for wound healing and chemically induced intestinal damage.

Main Results:

• Topical application of giaSCs promoted skin tissue reconstitution in excisional wounds.
• Systemic administration of giaSCs led to differentiation into small intestinal epithelial cells, repairing lipopolysaccharide-induced damage.
• Transplantation studies confirmed high in vivo plasticity, low immunogenicity, and non-tumorigenic properties of giaSCs.

Conclusions:

• Guide-integrated adult stem cells (giaSCs) possess high in vivo plasticity and effectively repair damaged tissues.
• giaSCs demonstrate a favorable safety profile, being non-tumorigenic and having low immunogenicity.
• These findings suggest giaSCs represent a promising cell source for future stem cell-based therapies.