Potential neuron-autonomous Purkinje cell degeneration by 2',3'-cyclic nucleotide 3'-phosphodiesterase promoter/Cre-mediated autophagy impairments.
CNP
myelination
neurodegeneration
oligodendrocyte
p62
Journal
FASEB journal : official publication of the Federation of American Societies for Experimental Biology
ISSN: 1530-6860
Titre abrégé: FASEB J
Pays: United States
ID NLM: 8804484
Informations de publication
Date de publication:
01 2021
01 2021
Historique:
received:
05
06
2020
revised:
04
11
2020
accepted:
11
11
2020
entrez:
18
12
2020
pubmed:
19
12
2020
medline:
16
6
2021
Statut:
ppublish
Résumé
Studies of neuroglial interaction largely depend on cell-specific gene knockout (KO) experiments using Cre recombinase. However, genes known as glial-specific genes have recently been reported to be expressed in neuroglial stem cells, leading to the possibility that a glia-specific Cre driver results in unwanted gene deletion in neurons, which may affect sound interpretation. 2',3'-Cyclic nucleotide 3'-phosphodiesterase (CNP) is generally considered to be an oligodendrocyte (OL) marker. Accordingly, Cnp promoter-controlled Cre recombinase has been used to create OL-specific gene targeting mice. However, in this study, using Rosa26-tdTomato-reporter/Cnp-Cre mice, we found that many forebrain neurons and cerebellar Purkinje neurons belong to the lineages of Cnp-expressing neuroglial stem cells. To answer whether gene targeting by Cnp-Cre can induce neuron-autonomous defects, we conditionally deleted an essential autophagy gene, Atg7, in Cnp-Cre mice. The Cnp-Cre-mediated Atg7 KO mice showed extensive p62 inclusion in neurons, including cerebellar Purkinje neurons with extensive neurodegeneration. Furthermore, neuronal areas showing p62 inclusion in Cnp-Cre-mediated Atg7 KO mice overlapped with the neuronal lineage of Cnp-expressing neuroglial stem cells. Moreover, Cnp-Cre-mediated Atg7-KO mice did not develop critical defects in myelination. Our results demonstrate that a large population of central neurons are derived from Cnp-expressing neuroglial stem cells; thus, conditional gene targeting using the Cnp promoter, which is known to be OL-specific, can induce neuron-autonomous phenotypes.
Identifiants
pubmed: 33337568
doi: 10.1096/fj.202001366RR
doi:
Substances chimiques
Atg7 protein, mouse
0
Cre recombinase
EC 2.7.7.-
Integrases
EC 2.7.7.-
2',3'-Cyclic Nucleotide 3'-Phosphodiesterase
EC 3.1.4.37
Cnp protein, mouse
EC 3.1.4.37
Autophagy-Related Protein 7
EC 6.2.1.45
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e21225Informations de copyright
© 2020 Federation of American Societies for Experimental Biology.
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