Magnesium regulates neural stem cell proliferation in the mouse hippocampus by altering mitochondrial function
Shanshan Jia1, Chengzhi Mou2, Yihe Ma1
1Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing, 100084, China.
Cell Biology International
|December 5, 2015
Summary
Magnesium influences hippocampal neural stem cell proliferation by affecting mitochondrial function. Optimal cell growth occurs at 0.8 mM extracellular magnesium, highlighting its role in brain energy metabolism and neurogenesis.
Area of Science:
- Neuroscience
- Cell Biology
- Neurogenesis
Background:
- Neural stem cells (NSCs) in the adult brain undergo developmental stages linked to microenvironments and energy metabolism.
- Neurogenesis is a restricted process influenced by tissue microenvironments.
- Magnesium is a critical nutrient for cellular energy metabolism.
Purpose of the Study:
- To investigate the effect of extracellular magnesium concentration on neural stem cell proliferation in the embryonic hippocampus.
- To determine the role of magnesium in regulating NSC proliferation via mitochondrial function.
Main Methods:
- In vitro culture of hippocampal neural stem cells.
- Assessment of NSC proliferation rates at varying extracellular magnesium concentrations (0.4 mM, 0.8 mM, 1.4 mM).
- Measurement of mitochondrial membrane potential in NSCs.
Main Results:
- NSC proliferation and neurosphere formation peaked at 0.8 mM extracellular magnesium.
- Lower proliferation rates were observed at 0.4 mM and 1.4 mM magnesium concentrations.
- Mitochondrial membrane potential was highest at 0.8 mM magnesium, indicating optimal mitochondrial function.
Conclusions:
- Extracellular magnesium concentration regulates the proliferation of hippocampal neural stem cells.
- Magnesium influences NSC proliferation by modulating mitochondrial function and magnesium homeostasis.
- This study reveals a novel role for magnesium in regulating hippocampal NSC energy metabolism and proliferation.
