Mesenchymal Stem Cell Sheet Engineering: Refining Cell Delivery Strategies in Regenerative Medicine

Area of Science:

• Regenerative Medicine
• Biomaterials Engineering
• Cell Therapy

Background:

• Mesenchymal stem cells (MSCs) show promise in regenerative medicine due to immunomodulatory and differentiation capabilities.
• Conventional MSC therapies often suffer from poor cell retention and transient therapeutic effects.
• Delivery strategy significantly impacts MSC therapy efficacy, beyond cell type or disease context.

Purpose of the Study:

• To review MSC-based cell sheet engineering as a strategy to enhance cell retention and therapeutic persistence.
• To critically summarize preclinical evidence of MSC sheet applications in various tissue environments.
• To propose a conceptual shift towards tissue-level regeneration engineering with MSC sheets.

Main Methods:

• Review of preclinical studies on MSC cell sheet technology.
• Analysis of MSC sheet performance in cardiac and cutaneous repair models.
• Synthesis of evidence regarding cell retention, paracrine signaling, and tissue regeneration.

Main Results:

• MSC sheets significantly enhance cell retention and prolong therapeutic persistence compared to single-cell injections.
• Preclinical models demonstrate improved cardiac and cutaneous repair using MSC sheets.
• MSC sheets sustain paracrine signaling, promoting effective tissue regeneration.

Conclusions:

• Effective MSC sheet therapy necessitates organ-specific and cell-source-dependent design strategies.
• MSC sheet engineering represents a paradigm shift from transient cell delivery to integrated tissue regeneration.
• This approach holds potential for advancing regenerative medicine outcomes.