Different concentrations of kaempferol distinctly modulate murine embryonic stem cell function.

Area of Science:

• Biochemistry
• Cell Biology
• Developmental Biology

Background:

• Kaempferol is a natural flavonoid with known anticancer properties.
• Embryonic stem cells (ESCs) are crucial for regenerative medicine and toxicology.
• The effects of kaempferol on ESC function remain largely unexplored.

Purpose of the Study:

• To investigate the impact of kaempferol on murine embryonic stem cell (mESC) pluripotency and differentiation.
• To determine the effects of different kaempferol concentrations on mESC viability and function.

Main Methods:

• Exposure of mESCs to varying concentrations of kaempferol (20 μM and 200 μM).
• Assessment of cell number, pluripotency markers, apoptosis, mitochondrial membrane potential, and mitochondrial mass.
• Evaluation of mESC differentiation capacity.

Main Results:

• High kaempferol concentrations (200 μM) reduced cell numbers but maintained pluripotency.
• Low kaempferol concentrations (20 μM) increased pluripotency markers but impaired differentiation.
• Kaempferol induced a dose-dependent increase in apoptosis and mitochondrial reactive oxygen species (ROS) at higher concentrations.
• Mitochondrial membrane potential and mass were unaffected.

Conclusions:

• Low kaempferol concentrations may support mESC pluripotency but inhibit differentiation.
• High kaempferol concentrations induce apoptosis and oxidative stress in mESCs.
• Kaempferol exhibits concentration-dependent effects on ESCs, with implications for their use in regenerative medicine.