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A precision product framework for context-dependent mechanisms of MSC therapy
1The Herbert Wertheim UF Scripps Institute for Biomedical Innovation and Technology, 110 Scripps Way, Jupiter, FL 33458, USA.
Cell Stem Cell
|May 21, 2026
Summary
Mesenchymal stem/stromal cell (MSC) therapy efficacy relies on a precision product framework, not just cell viability. Apoptotic MSCs, cleared by the host, drive therapeutic effects in specific inflammatory conditions.
Area of Science:
- Regenerative Medicine
- Cell Therapy
- Immunology
Background:
- Mesenchymal stem/stromal cell (MSC) therapies have not met expectations.
- Current potency metrics focus on cell viability, overlooking other mechanisms.
Purpose of the Study:
- Propose a "precision product" framework to reconcile conflicting data on MSC therapy.
- Shift focus from viability to a continuum of MSC function (secretory and apoptotic states).
Main Methods:
- Integrated existing data on cryopreservation, apoptosis, and metabolic activity.
- Analyzed the role of paracrine signaling and apoptosis in MSC function.
Main Results:
- MSC efficacy depends on matching the product's functional state (secretory vs. apoptotic) to the host's disease microenvironment.
- Apoptotic MSCs, through host efferocytosis, can be key drivers of efficacy in inflammatory contexts.
Conclusions:
- The "living-drug" paradigm needs revision.
- A "precision product" approach, embracing heterogeneity and mechanism-specific matching, can overcome translational hurdles in MSC therapy development.
