The oligodendrocyte-enriched orphan G protein-coupled receptor Gpr62 is dispensable for central nervous system myelination. 2021

Curtis M Hay, and Stacey Jackson, and Stanislaw Mitew, and Daniel J Scott, and Matthias Koenning, and AeSoon L Bensen, and Helena Bujalka, and Trevor J Kilpatrick, and Ben Emery
Department of Anatomy and Neuroscience, University of Melbourne, Melbourne, Victoria, Australia.

Myelination is a highly regulated process in the vertebrate central nervous system (CNS) whereby oligodendrocytes wrap axons with multiple layers of insulating myelin in order to allow rapid electrical conduction. Establishing the proper pattern of myelin in neural circuits requires communicative axo-glial interactions, however, the molecular interactions that occur between oligodendrocytes and axons during developmental myelination and myelin maintenance remain to be fully elucidated. Our previous work identified G protein-coupled receptor 62 (Gpr62), an uncharacterized orphan g-protein coupled receptor, as being selectively expressed by mature oligodendrocytes within the CNS, suggesting a potential role in myelination or axoglial interactions. However, no studies to date have assessed the functional requirement for Gpr62 in oligodendrocyte development or CNS myelination. To address this, we generated a knockout mouse strain lacking the Gpr62 gene. We assessed CNS myelination during both postnatal development and adulthood using immunohistochemistry, electron microscopy and western blot. In addition, we utilized AAV-mediated expression of a tagged Gpr62 in oligodendrocytes to determine the subcellular localization of the protein in vivo. We find that virally expressed Gpr62 protein is selectively expressed on the adaxonal myelin layer, suggestive of a potential role for Gpr62 in axo-myelinic signaling. Nevertheless, Gpr62 knockout mice display normal oligodendrocyte numbers and apparently normal myelination within the CNS during both postnatal development and adulthood. We conclude that in spite of being well-placed to mediate neuronal-oligodendrocyte communications, Gpr62 is overall dispensable for CNS myelination.

UI MeSH Term Description Entries
D009186 Myelin Sheath The lipid-rich sheath surrounding AXONS in both the CENTRAL NERVOUS SYSTEMS and PERIPHERAL NERVOUS SYSTEM. The myelin sheath is an electrical insulator and allows faster and more energetically efficient conduction of impulses. The sheath is formed by the cell membranes of glial cells (SCHWANN CELLS in the peripheral and OLIGODENDROGLIA in the central nervous system). Deterioration of the sheath in DEMYELINATING DISEASES is a serious clinical problem. Myelin,Myelin Sheaths,Sheath, Myelin,Sheaths, Myelin
D009474 Neurons The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM. Nerve Cells,Cell, Nerve,Cells, Nerve,Nerve Cell,Neuron
D009836 Oligodendroglia A class of large neuroglial (macroglial) cells in the central nervous system. Oligodendroglia may be called interfascicular, perivascular, or perineuronal (not the same as SATELLITE CELLS, PERINEURONAL of GANGLIA) according to their location. They form the insulating MYELIN SHEATH of axons in the central nervous system. Interfascicular Oligodendroglia,Oligodendrocytes,Perineuronal Oligodendroglia,Perineuronal Satellite Oligodendroglia Cells,Perivascular Oligodendroglia,Satellite Cells, Perineuronal, Oligodendroglia,Perineuronal Satellite Oligodendrocytes,Interfascicular Oligodendroglias,Oligodendrocyte,Oligodendrocyte, Perineuronal Satellite,Oligodendrocytes, Perineuronal Satellite,Oligodendroglia, Interfascicular,Oligodendroglia, Perineuronal,Oligodendroglia, Perivascular,Perineuronal Satellite Oligodendrocyte,Satellite Oligodendrocyte, Perineuronal,Satellite Oligodendrocytes, Perineuronal
D002490 Central Nervous System The main information-processing organs of the nervous system, consisting of the brain, spinal cord, and meninges. Cerebrospinal Axis,Axi, Cerebrospinal,Axis, Cerebrospinal,Central Nervous Systems,Cerebrospinal Axi,Nervous System, Central,Nervous Systems, Central,Systems, Central Nervous
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001369 Axons Nerve fibers that are capable of rapidly conducting impulses away from the neuron cell body. Axon
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus

Related Publications

Curtis M Hay, and Stacey Jackson, and Stanislaw Mitew, and Daniel J Scott, and Matthias Koenning, and AeSoon L Bensen, and Helena Bujalka, and Trevor J Kilpatrick, and Ben Emery
March 2016, Nature communications,
Curtis M Hay, and Stacey Jackson, and Stanislaw Mitew, and Daniel J Scott, and Matthias Koenning, and AeSoon L Bensen, and Helena Bujalka, and Trevor J Kilpatrick, and Ben Emery
November 2009, Nature neuroscience,
Curtis M Hay, and Stacey Jackson, and Stanislaw Mitew, and Daniel J Scott, and Matthias Koenning, and AeSoon L Bensen, and Helena Bujalka, and Trevor J Kilpatrick, and Ben Emery
October 2022, Glia,
Curtis M Hay, and Stacey Jackson, and Stanislaw Mitew, and Daniel J Scott, and Matthias Koenning, and AeSoon L Bensen, and Helena Bujalka, and Trevor J Kilpatrick, and Ben Emery
June 2005, Neuropeptides,
Curtis M Hay, and Stacey Jackson, and Stanislaw Mitew, and Daniel J Scott, and Matthias Koenning, and AeSoon L Bensen, and Helena Bujalka, and Trevor J Kilpatrick, and Ben Emery
June 1995, The Keio journal of medicine,
Curtis M Hay, and Stacey Jackson, and Stanislaw Mitew, and Daniel J Scott, and Matthias Koenning, and AeSoon L Bensen, and Helena Bujalka, and Trevor J Kilpatrick, and Ben Emery
April 2022, Brain structure & function,
Curtis M Hay, and Stacey Jackson, and Stanislaw Mitew, and Daniel J Scott, and Matthias Koenning, and AeSoon L Bensen, and Helena Bujalka, and Trevor J Kilpatrick, and Ben Emery
July 2024, Glia,
Curtis M Hay, and Stacey Jackson, and Stanislaw Mitew, and Daniel J Scott, and Matthias Koenning, and AeSoon L Bensen, and Helena Bujalka, and Trevor J Kilpatrick, and Ben Emery
May 2013, Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences,
Curtis M Hay, and Stacey Jackson, and Stanislaw Mitew, and Daniel J Scott, and Matthias Koenning, and AeSoon L Bensen, and Helena Bujalka, and Trevor J Kilpatrick, and Ben Emery
December 1988, The Biochemical journal,
Curtis M Hay, and Stacey Jackson, and Stanislaw Mitew, and Daniel J Scott, and Matthias Koenning, and AeSoon L Bensen, and Helena Bujalka, and Trevor J Kilpatrick, and Ben Emery
May 2022, International journal of molecular sciences,
Copied contents to your clipboard!