Advanced oxidation protein products induce annulus fibrosus cell senescence through a NOX4-dependent, MAPK-mediated pathway and accelerate intervertebral disc degeneration

©2022 Dai et al..

Background: Intervertebral disc degeneration (IVDD) is closely associated with senescence. Annulus fibrosus (AF) cell senescence is a crucial driver of AF tissue tearing and fissures, thereby exacerbating IVDD. Increased advanced oxidative protein products (AOPPs) were found in human degenerative discs and aged rat discs and may be involved in IVDD. This study aimed to explore the mechanism of AOPPs-induced senescence in AF cells.

Methods: The pathological effects of AOPPs in vivo were investigated using a rat lumbar disc persistent degeneration model and a rat caudal disc puncture model. Rat primary AF cells were selected as in vitro models, and AOPPs were used as direct stimulation to observe their pathological effects. Setanaxb (NOX1/4 inhibitor), apocynin (NADPH oxidase inhibitor) and adenovirus (ADV) packed NADPH oxidase 4 (NOX4) specific shRNAs were used for pathway inhibition, respectively. Finally, adeno-associated viruses (AAVs) packed with NOX4-specific blocking sequences were used to inhibit the in vivo pathway.

Results: AOPPs accumulated in the rat lumbar and caudal degenerative discs. Intra-discal loading of AOPPs up-regulated the expression of NOX4, p53, p21, p16, IL-1β, and TNF-α, ultimately accelerating IVDD. Exposure of AOPPs to AF primary cells up-regulated NOX4 expression, induced phosphorylation of mitogen-activated protein kinases (MAPK), triggered senescence and increased IL-1β and TNF-α. Apocynin, setanaxib, and ADV pre-cultured AF cells abrogated AOPPs-induced senescence. AAV-mediated inhibition of NOX4 expression in vivo reduced the expression of p53, p21, p16, IL-1β and TNF-α in vivo and delayed IVDD.

Conclusions: AOPPs induced AF cell senescence through a NOX4-dependent and MAPK-mediated pathway.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:10

Enthalten in:

PeerJ - 10(2022) vom: 27., Seite e13826

Sprache:

Englisch

Beteiligte Personen:

Dai, Xiangheng [VerfasserIn]
Chen, Yu [VerfasserIn]
Yu, Zihan [VerfasserIn]
Liao, Congrui [VerfasserIn]
Liu, Zhongyuan [VerfasserIn]
Chen, Jianting [VerfasserIn]
Wu, Qian [VerfasserIn]

Links:

Volltext

Themen:

Acetovanillone
Advanced Oxidation Protein Products
Advanced oxidized protein products
B6J7B9UDTR
EC 1.6.3.-
EC 2.7.11.24
Inflammation associated with senescence
Intervertebral disc degeneration
Journal Article
Mitogen-Activated Protein Kinases
NADPH Oxidase 4
NOX4 protein, human
Nox4 protein, rat
Research Support, Non-U.S. Gov't
Senescence
Tumor Necrosis Factor-alpha
Tumor Suppressor Protein p53

Anmerkungen:

Date Completed 17.01.2023

Date Revised 17.01.2023

published: Electronic-eCollection

figshare: 10.6084/m9.figshare.19596430, 10.6084/m9.figshare.19596439, 10.6084/m9.figshare.19596445, 10.6084/m9.figshare.19596448, 10.6084/m9.figshare.19596451, 10.6084/m9.figshare.19596457, 10.6084/m9.figshare.19596514

Citation Status MEDLINE

doi:

10.7717/peerj.13826

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM344547078