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An Ex vivo Model of an Oligodendrocyte-directed T-Cell Attack in Acute Brain Slices
Published on: February 5, 2015
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Autophagy collaborates with apoptosis pathways to control oligodendrocyte number
Tingxin Zhang1, Aksheev Bhambri1, Yihe Zhang1
1Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
Cell Reports
|August 6, 2023
Summary
Autophagy, a cell survival process, triggers oligodendrocyte apoptosis during brain development. Blocking this process leads to increased oligodendrocyte numbers, revealing new insights into brain development and cell regulation.
Area of Science:
- Neuroscience
- Cell Biology
- Developmental Biology
Background:
- Oligodendrocytes are crucial for myelin production in the central nervous system.
- Oligodendrocyte numbers are precisely regulated to match local neural circuitry.
- Mechanisms controlling oligodendrocyte population size remain largely unknown.
Purpose of the Study:
- To investigate the role of autophagy in regulating oligodendrocyte numbers during development.
- To elucidate the cellular and genetic mechanisms governing oligodendrogenesis.
Main Methods:
- Utilized genetic manipulation to block autophagy flux in premyelinating oligodendrocytes.
- Performed in vivo studies in mammalian models.
- Investigated the interaction between autophagy and the TFEB pathway.
Main Results:
- Autophagy flux is elevated in premyelinating oligodendrocytes during development.
- Genetic blockade of autophagy results in widespread ectopic oligodendrocyte survival.
- Autophagy acts cell-autonomously to induce oligodendrocyte apoptosis.
- Autophagy genetically interacts with the TFEB pathway to control oligodendrocyte numbers.
Conclusions:
- Autophagy promotes apoptosis in mammalian cells under physiological conditions.
- Autophagy is a key intrinsic mechanism controlling oligodendrogenesis and oligodendrocyte numbers.
- Findings shed light on the regulation of glial cell populations in the developing brain.
Keywords:
CP: Developmental biologyCP: Neuroscienceapoptosisautophagycentral nervous systemmyelinationoligodendrocyteMore Related Videos
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