Optimization of oxidative stress for mesenchymal stromal/stem cell engraftment, function and longevity

Area of Science:

• Cellular therapeutics
• Regenerative medicine
• Stem cell biology

Background:

• Mesenchymal stromal/stem cells (MSCs) are multipotent cells with significant therapeutic potential due to their differentiation and immunomodulatory capabilities.
• Clinical application of MSCs is hindered by low tissue abundance, necessitating ex vivo expansion.
• Ex vivo expansion leads to replicative senescence, reduced functionality, and impaired engraftment, exacerbated by oxidative stress.

Purpose of the Study:

• To review current strategies for reducing oxidative stress in ex vivo expanded MSCs.
• To highlight the impact of oxidative stress on MSC senescence and functionality.
• To identify future research directions for managing oxidative stress in MSCs.

Main Methods:

• Literature review of studies addressing oxidative stress in MSCs.
• Analysis of the relationship between MSC expansion, senescence, and oxidative stress.
• Synthesis of findings to propose future research avenues.

Main Results:

• Ex vivo expansion and aging of MSCs are associated with increased oxidative stress.
• Oxidative stress negatively impacts MSC functionality, differentiation potential, and engraftment.
• Various strategies have been explored to counteract MSC oxidative stress.

Conclusions:

• Reducing oxidative stress is critical for maintaining MSC therapeutic potential.
• Further research is needed to develop effective interventions against MSC oxidative stress.
• Optimizing MSC expansion protocols to minimize senescence and oxidative damage is essential for clinical translation.