Evidence map›Paper›PMID 38622696›Full record

ArticleJournal of orthopaedic surgery and research2024

KLF5 promotes the ossification process of ligamentum flavum by transcriptionally activating CX43.

Hubing Guo, Lingxia Yang, Jin Liu, Liqi Chen, Yufeng Huang, Jinsong Li

Open access · goldAbstract read
In one paragraph

Article in Journal of orthopaedic surgery and research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed, 3 citations in OpenAlex.

  1. Article
  2. Article
  3. Biological mechanisms underlying the ossification of ligamentum flavum and potential therapeutic targets derived from current research.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2025
    Review
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

6 authors at 2 institutions in 1 country.

Hubing GuoThe First Department of Orthopaedic Surgery, The First Hospital of Tianshui, Tianshui, Gansu, 741000, China.
Lingxia YangDepartment of Odermatology, The First Hospital of Tianshui, Tianshui, Gansu, 741000, China.
Jin LiuThe First Department of Orthopaedic Surgery, The First Hospital of Tianshui, Tianshui, Gansu, 741000, China.
Liqi ChenThe First Department of Orthopaedic Surgery, The First Hospital of Tianshui, Tianshui, Gansu, 741000, China.
Yufeng HuangThe First Department of Orthopaedic Surgery, The First Hospital of Tianshui, Tianshui, Gansu, 741000, China.
Jinsong LiDepartment of Spine Surgery, The Third Xiangya Hospital, Central South University, No.138 Tongzipo Road, Changsha, 410013, Hunan, China. jinsongli_csu@163.com.
The First People's Hospital of Tianmen · CNCentral South University · CN

Funding

National Outstanding Youth Science Fund Project of National Natural Science Foundation of China 82273497, 81502331, 81772866, 82172594Natural Science Foundation of Hunan Province 2021JJ31010, 2021JJ31025Wisdom Accumulation and Talent Cultivation Project of the Third Xiangya Hospital of Central South University YX202105
6 · The paper itself

Abstract

backgroundOssification of ligamentum flavum (OLF) is a prevalent degenerative spinal disease, typically causing severe neurological dysfunction. Kruppel-like factor 5 (KLF5) plays an essential role in the regulation of skeletal development. However, the mechanism KLF5 plays in OLF remains unclear, necessitating further investigative studies.

methodsqRT-PCR, immunofluorescent staining and western blot were used to measure the expression of KLF5. Alkaline Phosphatase (ALP) staining, Alizarin red staining (ARS), and the expression of Runt-related transcription factor 2 (RUNX2), osteopontin (OPN), and osteocalcin (OCN) were used to evaluate the osteogenic differentiation. Luciferase activity assay and ChIP-PCR were performed to investigate the molecular mechanisms.

resultsKLF5 was significantly upregulated in OLF fibroblasts in contrast to normal ligamentum flavum (LF) fibroblasts. Silencing KLF5 diminished osteogenic markers and mineralized nodules, while its overexpression had the opposite effect, confirming KLF5's role in promoting ossification. Moreover, KLF5 promotes the ossification of LF by activating the transcription of Connexin 43 (CX43), and overexpressing CX43 could reverse the suppressive impact of KLF5 knockdown on OLF fibroblasts' osteogenesis.

conclusionKLF5 promotes the OLF by transcriptionally activating CX43. This finding contributes significantly to our understanding of OLF and may provide new therapeutic targets.

Indexed as

Ligamentum FlavumOssification, HeterotopicCells, CulturedConnexin 43HumansKruppel-Like Transcription FactorsOsteogenesisTranscription FactorsConnexin 43GJA1 protein, humanKLF5 protein, humanKruppel-Like Transcription FactorsTranscription FactorsCX43KLF5Ligamentum flavumOssification

Identifiers

PMID38622696
PMCPMC11020807
OpenAlexW4394853536

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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 Socratic graph.