Evidence map›Paper›PMID 33734570›Full record

ArticleJournal of cellular and molecular medicine2021

S100A9 induces nucleus pulposus cell degeneration through activation of the NF-κB signaling pathway.

Song Guo, Qihang Su, Junxiang Wen, Kai Zhu, Jun Tan, Qiang Fu, Guixin Sun

Open access · goldAbstract read
In one paragraph

Article in Journal of cellular and molecular medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
0.7field-weighted citation impact, top 32% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 16 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 1 country.

Song GuoDepartment of Orthopaedics, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.
Qihang SuDepartment of Orthopaedics, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.
Junxiang WenDepartment of Orthopaedics, Ruijin Hospital, Shanghai Jiaotong University, Shanghai, China.
Kai ZhuDepartment of Orthopaedics, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.
Jun TanDepartment of Orthopaedics, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.
Qiang FuDepartment of Orthopaedics, Shanghai General Hospital, Shanghai Jiaotong University, Shanghai, China.
Guixin SunDepartment of Orthopaedics, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.ORCID 0000-0002-0962-8561
Shanghai East Hospital · CNRuijin Hospital · CNShanghai First People's Hospital · CN

Funding

Key Discipline Construction Project of Pudong Health Bureau of Shanghai PWZxk2017-08National Natural Science Foundation of China 81971169
6 · The paper itself

Abstract

Oxidative stress in the lumbar disc leads to the degeneration of nucleus pulposus (NP). However, the molecular mechanisms underlying this process remain unclear. In this study, we delineated a key calcium-binding protein, S100A9, which was induced by oxidative stress and was highly expressed in the degenerative NP. Immunofluorescence staining and Western blotting revealed that S100A9 induced NP cell apoptosis in vitro by up-regulating the expression of pro-apoptotic markers, including cleaved caspase-3, cytochrome c and Bax. Moreover, RT-PCR analyses revealed that the expression of S100A9 caused NP matrix degradation by up-regulating the expression of matrix degradation enzymes and increased the inflammatory response by up-regulating cytokine expression. Therefore, S100A9 induced NP cell degeneration by exerting pro-apoptotic, pro-degradation and pro-inflammatory effects. The detailed mechanism underlying S100A9-induced NP degeneration was explored by administering SC75741, a specific NF-κB inhibitor in vitro. We concluded that S100A9 induced NP cell apoptosis, caused matrix degradation and amplified the inflammatory response through the activation of the NF-κB signalling pathway. Inhibition of these pro-apoptotic, pro-degradation and pro-inflammatory effects induced by S100A9 in NP may be a favourable therapeutic strategy to slow lumbar disc degeneration.

Indexed as

ApoptosisOxidative StressCalgranulin BCells, CulturedHumansIntervertebral Disc DegenerationNF-kappa BNucleus PulposusSignal TransductionCalgranulin BNF-kappa BS100A9 protein, humancalcium-binding S100A9 proteincell apoptosisinflammatory cytokinesLumbar disc degenerationmatrix degradationNF-κB signalling pathwayoxidative stress

Identifiers

PMID33734570
PMCPMC8107097
OpenAlexW3138816710

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.