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Updated: May 25, 2026
Derivation of Glial Restricted Precursors from E13 mice
Published on: June 20, 2012
Minocycline protects oligodendroglial precursor cells against injury caused by oxygen-glucose deprivation
Thomas Schmitz1, Stefanie Endesfelder, Li-Jin Chew
1Department for Neonatology, Charité University Medical Center, Berlin, Germany. thomas.schmitz@charite.de
Abstract:
Ischemic brain injury is widely modeled in vitro with paradigms of oxygen-glucose deprivation (OGD), which leads to cell death. The prevention and attenuation of brain injury by the tetracycline antibiotic minocycline has been attributed largely to suppression of microglial activation, but its benefits in oligodendrocyte cells have not been well characterized. Using primary cultures of rat oligodendroglial precursor cells (OPC) exposed to OGD, we investigated the direct effects of minocycline on the survival, proliferation, and maturation of oligodendroglial lineage cells. OGD for 2 hr caused a decrease in the total number of OPC and the amount of proliferating progenitors by 50%, which was attenuated by inclusion of minocycline. The reduced numbers of immature oligodendroglial cells at 72 hr and of mature oligodendrocytes at 120 hr after OGD were partially restored by minocycline. In OPC, OGD caused an increase of reactive oxygen species (ROS) and production of TUNEL-positive cell numbers, which was abolished by minocycline. Minocycline preferentially increased the expression of superoxide dismutase under OGD but not in control OPC. Minocycline also prevented the OGD-induced downregulation of the transcription factors Sox10 and Olig2 and of myelin-specific genes 2'3' cyclic nucleotide phosphodiesterase (CNP) and myelin basic protein (MBP) in response to OGD. These studies demonstrate direct protective actions of minocycline on oligodendroglial-lineage cells, suggesting potential benefit in white matter injury involving OGD.
Insights
Minocycline protects oligodendrocyte precursor cells from oxygen-glucose deprivation (OGD) injury. This antibiotic enhances cell survival, proliferation, and maturation, offering potential benefits for white matter damage.
Area of Science:
- Neuroscience
- Cell Biology
- Pharmacology
Background:
- Ischemic brain injury is modeled using oxygen-glucose deprivation (OGD).
- Minocycline's neuroprotective effects are known, but its impact on oligodendrocytes is unclear.
- Oligodendrocytes are crucial for myelin sheath formation and maintenance in the central nervous system.
Purpose of the Study:
- To investigate the direct effects of minocycline on oligodendroglial lineage cells under OGD conditions.
- To assess minocycline's impact on cell survival, proliferation, and maturation.
- To explore the underlying mechanisms of minocycline's protective actions.
Main Methods:
- Primary cultures of rat oligodendroglial precursor cells (OPC) were subjected to OGD.
- Minocycline was administered to assess its effects on OPC survival and proliferation.
- Cell maturation markers, reactive oxygen species (ROS), and gene expression were analyzed.
Main Results:
- OGD reduced OPC numbers and proliferation by 50%, effects attenuated by minocycline.
- Minocycline partially restored immature and mature oligodendrocytes after OGD.
- Minocycline abolished OGD-induced ROS and cell death, increased superoxide dismutase, and prevented downregulation of key transcription factors and myelin genes.
Conclusions:
- Minocycline exerts direct protective effects on oligodendroglial-lineage cells against OGD.
- Minocycline's mechanism involves reducing oxidative stress and preserving key developmental markers.
- Minocycline shows potential therapeutic value for white matter injury associated with OGD.
