TonEBP regulates the hyperosmotic expression of aquaporin 1 and 5 in the intervertebral disc.
Adult
Animals
Aquaporin 1
/ genetics
Aquaporin 5
/ genetics
Chondrocytes
/ metabolism
Female
Gene Expression Regulation
Humans
Intervertebral Disc Degeneration
/ genetics
Male
Mice
Mice, Inbred C57BL
Mice, Knockout
Middle Aged
Nucleus Pulposus
/ metabolism
Osmolar Concentration
Primary Cell Culture
RNA, Small Interfering
/ genetics
Rats
Rats, Wistar
Signal Transduction
Transcription Factors
/ antagonists & inhibitors
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
04 02 2021
04 02 2021
Historique:
received:
14
08
2020
accepted:
22
12
2020
entrez:
5
2
2021
pubmed:
6
2
2021
medline:
20
11
2021
Statut:
epublish
Résumé
The central region of the intervertebral disc (IVD) is rich in proteoglycans, leading to a hyperosmotic environment, which fluctuates with daily loading. The cells of the nucleus pulposus (NP cells) have adapted to this environment via the function of tonicity enhancer binding protein (TonEBP), and NP cells have been shown to express several water channels known as aquaporins (AQP). We have previously shown that AQP1 and 5 decrease during IVD degeneration. Here, the regulation of AQP1 and 5 by hyperosmotic conditions and the role of TonEBP in this regulation was investigated. AQP1 and 5 gene expression was upregulated by hyperosmotic conditions mimicking the osmolality of the healthy IVD, which was abrogated by TonEBP knockdown. Furthermore, AQP1 and 5 immunopositivity was significantly reduced in TonEBP
Identifiants
pubmed: 33542263
doi: 10.1038/s41598-021-81838-9
pii: 10.1038/s41598-021-81838-9
pmc: PMC7862284
doi:
Substances chimiques
AQP1 protein, human
0
AQP5 protein, human
0
Aquaporin 5
0
NFAT5 protein, human
0
Nfat5 protein, mouse
0
Nfat5 protein, rat
0
RNA, Small Interfering
0
Transcription Factors
0
Aquaporin 1
146410-94-8
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Langues
eng
Sous-ensembles de citation
IM
Pagination
3164Subventions
Organisme : NIAMS NIH HHS
ID : R01 AR064733
Pays : United States
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