Apolipoprotein A-I Supports MSCs Survival under Stress Conditions

Area of Science:

• Stem Cell Biology
• Metabolic Disorders
• Biochemistry

Background:

• Mesenchymal stem/stromal cells (MSCs) transplantation is safe but lacks consistent efficacy.
• Transplanted MSCs face metabolic challenges in the bloodstream, particularly in type 2 diabetes (T2D) patients.
• The role of apolipoprotein A-I (apoA-I) in MSCs viability under T2D conditions is unexplored.

Purpose of the Study:

• To investigate the impact of T2D patient plasma on MSCs viability.
• To determine if apoA-I can protect MSCs against serum deprivation, hypoxia, and reactive oxygen species (ROS).
• To assess apoA-I's potential to improve MSCs transplantation outcomes in T2D.

Main Methods:

• Culturing MSCs in T2D patient plasma.
• Exposing MSCs to serum deprivation, hypoxia, and elevated ROS.
• Treating MSCs with apoA-I under various stress conditions.
• Analyzing MSCs viability, proliferation, cell cycle, and apoptosis.

Main Results:

• T2D patient plasma exhibited cytotoxic effects on MSCs in 39% of cases.
• ApoA-I significantly reduced intracellular ROS and enhanced MSCs proliferation under oxidative stress.
• ApoA-I supported rapid proliferation and reduced apoptosis during MSCs transition to oxygenated/oxidative environments.
• ApoA-I demonstrated protective effects across all tested adverse conditions.

Conclusions:

• ApoA-I mitigates the negative effects of T2D plasma and stress conditions on MSCs.
• ApoA-I enhances MSCs viability and proliferative capacity.
• ApoA-I holds promise for improving the efficacy of MSCs transplantation in T2D patients.