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Preparation of Rat Oligodendrocyte Progenitor Cultures and Quantification of Oligodendrogenesis Using Dual-infrared Fluorescence Scanning
Published on: February 17, 2016
Oligodendrocyte differentiation is increased in transferrin transgenic mice
Amina Sow1, Matthieu Lamant, Jean-Marie Bonny
1Unité Physiologie de la Reproduction et des Comportements (PRC), Institut National de la Recherche Agronomique, UMR 6175 INRA-CNRS-Université de Tours-Haras Nationaux, Nouzilly, France.
Journal of Neuroscience Research
|January 10, 2006
Summary
Transferrin (Tf) overexpression in the brain accelerates oligodendrocyte differentiation and promotes early central nervous system (CNS) maturation and myelination. This suggests Tf influences oligodendrocyte progenitor development.
Area of Science:
- Neuroscience
- Developmental Biology
- Biochemistry
Background:
- Transferrin (Tf) is an iron transport glycoprotein primarily synthesized by hepatocytes.
- Brain Tf, synthesized by oligodendrocytes (Ol), is implicated in myelinogenesis.
- Postnatal expression of Tf in the brain suggests a role in oligodendrocyte differentiation.
Purpose of the Study:
- To investigate the role of Tf in oligodendrocyte differentiation.
- To analyze the effects of Tf overexpression in oligodendrocytes on brain development and myelination.
Main Methods:
- Generation and analysis of transgenic mice overexpressing the human Tf gene in oligodendrocytes.
- Assessment of gene expression (DM-20, PLP, MBP, CNP, MAG, Sox10, Olig1, Olig2) via mRNA and protein analysis.
- Evaluation of oligodendrocyte differentiation markers (O4, PLP) in cultured brain cells.
- Magnetic Resonance Imaging (MRI) with diffusion tensor imaging (DTI) to assess myelination and maturation.
Main Results:
- Human Tf transgene expression initiated at 5 days postpartum.
- Increased mRNA levels of PLP, MBP, CNP, and MAG, and decreased DM-20 mRNA in transgenic mice brains.
- Higher proportion of O4 and PLP-expressing oligodendrocytes in cultured cells from transgenic mice.
- Observed early maturation of cerebellum and spinal cord, and enhanced myelination in the corpus callosum via DTI-MRI.
- Increased Sox10 mRNA and protein levels, with simultaneous increases in Sox10 and Tf expression.
- Olig1 mRNA levels increased, while Olig2 mRNA levels remained unchanged.
Conclusions:
- Overexpression of Tf in the brain accelerates oligodendrocyte lineage maturation.
- Tf influences oligodendrocyte progenitor differentiation in the central nervous system (CNS).
- Tf may play a critical role in CNS myelination and development.
