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Mechanical force triggers metabolic changes that promote orthodontic bone formation (opens in a new tab)

news-medical.net · 2026-10-30

Short answerEvidenceSource

Short answer

Mostly not supported

Mostly not supported.

The claims we could check match the study, but some claims were not covered by the evidence reviewed.

  • 2 supported
  • 6 not covered

Checked against the study summary. The full text wasn't available, so some details couldn't be settled either way.

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1
2

NewsLink checks it

Mostly not supported

Every claim we could check holds up. Two of eight claims match the study. This overall rating is based only on the claims we could check. Six claims the study doesn't address.

  • 2 supported
  • 6 not covered
Open claim evidence
3
Source paper

Source layer

The 2 papers the story cites

Source study separated from background citations.

The research anchor for the report.

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Evidence layer

Claim by claim

Each claim gets a verdict. Expand it to see the evidence directly below.

8 claims in this story

Showing all 8 claimsChoose a verdict to focus the list.

Claim 1 of 8Not coveredUsing single-cell RNA sequencing, cyclic stretch, CUT&Tag, macrophage co-culture, periodontal injection of a glycolysis inhibitor, and CXCR2 knockout mice, the study traced how glycolysis and H3K18 lactylation shape the periodontal immune niche and alveolar bone remodeling during orthodontic tooth movement.View evidenceHide evidence

Why this verdict

The broad pathway involving glycolysis, H3K18la, CXCL1/CXCR2 macrophage responses, and orthodontic bone remodeling is supported by the abstract-level profile. However, several listed methods—especially single-cell RNA sequencing, macrophage co-culture, and some experiment-specific tracing details—are not described in the abstract profile, so the full methodological claim is not verifiable at this depth.

1

Study evidence

Mechanical/orthodontic tension promoted expression of glycolysis-related genes in cultured PDL fibroblasts.

“orthodontic tension promoted the expression of glycolysis-related genes in periodontal ligament (PDL) fibroblasts”
2

Study evidence

H3K18la is enriched at the promoter region of CXCL1 in PDL fibroblasts as detected by CUT&Tag, and this promoter enrichment is associated with upregulated CXCL1 transcription.

“CUT&Tag analysis revealed that H3K18la was enriched at the promoter region of CXCL1 to upregulate its transcription.”
Claim 2 of 8Not coveredThe study found that orthodontic tooth movement upregulated glycolysis-related genes in periodontal ligament fibroblasts on the tension side, and cyclic stretch increased glycolytic proton efflux, lactate accumulation, global lactylation, and H3K18la in human periodontal ligament fibroblasts.View evidenceHide evidence

Why this verdict

The abstract profile supports that orthodontic/mechanical tension promoted glycolysis-related genes in PDL fibroblasts and increased H3K18la. It does not verify the more specific details about tension-side localization, cyclic stretch in human PDL fibroblasts, glycolytic proton efflux, lactate accumulation, or global lactylation, so the full claim cannot be verified from the abstract-level evidence.

1

Study evidence

Mechanical/orthodontic tension promoted expression of glycolysis-related genes in cultured PDL fibroblasts.

“orthodontic tension promoted the expression of glycolysis-related genes in periodontal ligament (PDL) fibroblasts”
Claim 3 of 8Not coveredCUT&Tag showed H3K18la enrichment at the CXCL1 promoter; exogenous lactate increased CXCL1, while the glycolysis inhibitor 3PO reduced H3K18la and CXCL1 secretion.View evidenceHide evidence

Why this verdict

CUT&Tag evidence for H3K18la enrichment at the CXCL1 promoter is supported, and 3PO attenuation of stretch-induced H3K18la and CXCL1 levels is supported at abstract level. But the abstract profile does not verify exogenous lactate increasing CXCL1 or the specific claim that 3PO reduced CXCL1 secretion, so the complete claim is not verifiable at this depth.

1

Study evidence

Mechanical/orthodontic tension promoted expression of glycolysis-related genes in cultured PDL fibroblasts.

“orthodontic tension promoted the expression of glycolysis-related genes in periodontal ligament (PDL) fibroblasts”
2

Study evidence

H3K18la is enriched at the promoter region of CXCL1 in PDL fibroblasts as detected by CUT&Tag, and this promoter enrichment is associated with upregulated CXCL1 transcription.

“CUT&Tag analysis revealed that H3K18la was enriched at the promoter region of CXCL1 to upregulate its transcription.”
Claim 4 of 8Not coveredCo-culture with stretched fibroblasts increased CD206-positive macrophages, and the CXCR2 antagonist SB225002 reversed this effect; in macrophages, CXCL1 enhanced OXPHOS and M2 polarization through CXCR2.View evidenceHide evidence

Why this verdict

The abstract profile supports that CXCL1 augments macrophage oxidative phosphorylation and promotes M2 polarization, and it supports an in vivo role for CXCR2 signaling. It does not verify co-culture with stretched fibroblasts, CD206-positive macrophage readouts, or reversal by the CXCR2 antagonist SB225002, so the full claim is not verifiable from the abstract profile.

1

Study evidence

CXCL1 exposure augments oxidative phosphorylation in macrophages.

“CXCL1 subsequently augmented oxidative phosphorylation in macrophages and promoted M2 macrophage polarization.”
2

Study evidence

Genetic blockade of CXCL1/CXCR2 signaling (Cxcr2-/- mice) impairs tension-induced M2 macrophage polarization in the PDL and disrupts the pro-resolving microenvironment described as conducive to bone formation during orthodontic tooth movement.

“the blockade of the CXCL1/CXCR2 axis in vivo, using Cxcr2 knockout (Cxcr2-/-) mice, impaired tension-induced M2 macrophage polarization in PDL”
Claim 5 of 8Not coveredIn vivo, 3PO reduced F4/80-positive CXCR2-positive macrophage infiltration and osteocalcin-positive bone formation, and Cxcr2 knockout mice showed fewer M2 macrophages and osteocalcin-positive cells and more tartrate-resistant acid phosphatase-positive osteoclasts on the tension side.View evidenceHide evidence

Why this verdict

The abstract profile supports that in vivo 3PO disrupted CXCR2+ macrophage infiltration and inhibited bone formation, and that Cxcr2 knockout impaired tension-induced M2 polarization. It does not verify the specific F4/80, osteocalcin, or TRAP readouts, nor does it establish from the abstract that bone formation and osteoclast outcomes were directly measured in Cxcr2 knockout mice. The detailed marker-level claim is therefore not verifiable at this depth.

1

Study evidence

Local periodontal injection of 3PO during orthodontic tooth movement disrupted CXCL1-mediated recruitment/infiltration of CXCR2+ macrophages into the periodontal ligament.

“in vivo inhibition of glycolysis by periodontal injection of 3PO disrupted the CXCL1-mediated CXCR2+ macrophage infiltration and inhibited bone formation during orthodontic tooth movement.”
2

Study evidence

Genetic blockade of CXCL1/CXCR2 signaling (Cxcr2-/- mice) impairs tension-induced M2 macrophage polarization in the PDL and disrupts the pro-resolving microenvironment described as conducive to bone formation during orthodontic tooth movement.

“the blockade of the CXCL1/CXCR2 axis in vivo, using Cxcr2 knockout (Cxcr2-/-) mice, impaired tension-induced M2 macrophage polarization in PDL”
Claim 6 of 8Not coveredThe authors cautioned that 3PO can affect multiple cell types and that CXCR2 is broadly expressed, so cell-type-specific studies are needed before targeting this pathway.View evidenceHide evidence

Why this verdict

The caveats are plausible and align with profile-level concerns about 3PO specificity and CXCR2/germline-knockout interpretation, but the abstract profile does not show that the authors themselves cautioned this or called for cell-type-specific studies. The authorship and exact cautionary framing are not verifiable at abstract depth.

1

Study evidence

Local periodontal injection of 3PO during orthodontic tooth movement disrupted CXCL1-mediated recruitment/infiltration of CXCR2+ macrophages into the periodontal ligament.

“in vivo inhibition of glycolysis by periodontal injection of 3PO disrupted the CXCL1-mediated CXCR2+ macrophage infiltration and inhibited bone formation during orthodontic tooth movement.”
2

Study evidence

Genetic blockade of CXCL1/CXCR2 signaling (Cxcr2-/- mice) impairs tension-induced M2 macrophage polarization in the PDL and disrupts the pro-resolving microenvironment described as conducive to bone formation during orthodontic tooth movement.

“the blockade of the CXCL1/CXCR2 axis in vivo, using Cxcr2 knockout (Cxcr2-/-) mice, impaired tension-induced M2 macrophage polarization in PDL”
Claim 7 of 8SupportedResearchers at West China Hospital of Stomatology, Sichuan University reported that tensile force drives metabolic–epigenetic reprogramming in periodontal ligament fibroblasts.View evidenceHide evidence

Why this verdict

The abstract-level profile supports the central causal framing that mechanical tension activates glycolysis in PDL fibroblasts, increases H3K18 lactylation, and links this metabolic-epigenetic change to CXCL1 transcription. The institutional attribution is not independently assessed in the supplied scientific profile, but the scientific claim is supported.

1

Study evidence

Mechanical/orthodontic tension promoted expression of glycolysis-related genes in cultured PDL fibroblasts.

“orthodontic tension promoted the expression of glycolysis-related genes in periodontal ligament (PDL) fibroblasts”
2

Study evidence

H3K18la is enriched at the promoter region of CXCL1 in PDL fibroblasts as detected by CUT&Tag, and this promoter enrichment is associated with upregulated CXCL1 transcription.

“CUT&Tag analysis revealed that H3K18la was enriched at the promoter region of CXCL1 to upregulate its transcription.”
Claim 8 of 8SupportedThe authors said the work identifies a mechanical–metabolic–epigenetic pathway that converts tensile force into CXCL1 signaling and supports a pro-resolving niche for bone deposition during orthodontic settings.View evidenceHide evidence

Why this verdict

This accurately reflects the paper profile’s overall pathway: tension-induced glycolysis and H3K18la in PDL fibroblasts promote CXCL1 signaling, which shapes macrophage metabolism/polarization and a pro-resolving niche linked to bone formation during orthodontic tooth movement.

1

Study evidence

Mechanical/orthodontic tension promoted expression of glycolysis-related genes in cultured PDL fibroblasts.

“orthodontic tension promoted the expression of glycolysis-related genes in periodontal ligament (PDL) fibroblasts”
2

Study evidence

H3K18la is enriched at the promoter region of CXCL1 in PDL fibroblasts as detected by CUT&Tag, and this promoter enrichment is associated with upregulated CXCL1 transcription.

“CUT&Tag analysis revealed that H3K18la was enriched at the promoter region of CXCL1 to upregulate its transcription.”
Then look for missing context

Context layer

What the story left out

Important study details the story did not include.

  • For Cxcr2 knockout experiments, the abstract profile does not specify whether bone formation was directly measured or inferred from disruption of the pro-resolving niche.

    The story reports specific osteocalcin and TRAP changes in Cxcr2 knockout mice, but it does not acknowledge that these direct bone-remodeling readouts are not verifiable from the abstract profile.

    From Cxcr2 knockout (Cxcr2-/-) in mouse orthodontic tooth movement model

7 things the story did carry across
  • Mechanical tension activates glycolysis in PDL fibroblasts and is linked to increased H3K18 lactylation and CXCL1 induction.
  • CUT&Tag showed H3K18la enrichment at the CXCL1 promoter, linking the epigenetic mark to CXCL1 transcription.
  • Fibroblast-derived CXCL1 augments macrophage oxidative phosphorylation and promotes M2 polarization.
  • Local in vivo glycolysis inhibition with 3PO disrupts CXCR2+ macrophage infiltration and inhibits bone formation during orthodontic tooth movement.
  • Cxcr2 knockout impairs tension-induced M2 macrophage polarization and disrupts the pro-resolving periodontal niche conducive to bone formation.
  • 3PO specificity and possible off-target or multi-cell-type effects are an interpretation-changing limitation for the in vivo glycolysis-inhibition results.
  • CXCR2 blockade/knockout interpretation is limited because CXCR2 is broadly expressed and germline knockout may introduce systemic or developmental confounding.
Then read the study layer

Study layer

Study at a glance

Scan the study first. Expand only the parts you want to inspect.

Pieces of work

5

Evidence read

study summary

Lead result

in vivo animal

1Lead resultin vivo animalIn vivo inhibition of glycolysis in the periodontium (3PO) disrupts CXCL1/CXCR2+ macrophage infiltration and suppresses alveolar bone formation during orthodontic tooth movement.in vivo animal intervention (local pharmacologic inhibition)Expand

In plain English

In a mouse orthodontic tooth movement model, local periodontal inhibition of glycolysis by 3PO disrupted CXCL1-mediated recruitment of CXCR2+ macrophages to the periodontal ligament and inhibited alveolar bone formation during mechanical loading.

Key findings

  • Local periodontal injection of 3PO during orthodontic tooth movement disrupted CXCL1-mediated recruitment/infiltration of CXCR2+ macrophages into the periodontal ligament.
  • Local periodontal 3PO treatment inhibited alveolar bone formation occurring during orthodontic tooth movement.
“in vivo inhibition of glycolysis by periodontal injection of 3PO disrupted the CXCL1-mediated CXCR2+ macrophage infiltration and inhibited bone formation during orthodontic tooth movement.”
What this piece can’t prove

3 further details could not be confirmed from the summary.

2in vitroMechanical tension activates glycolysis in periodontal ligament (PDL) fibroblasts, increasing H3K18 lactylation (H3K18la) and driving CXCL1 transcription via promoter enrichment.In vitro mechanical-stretch of PDL fibroblasts with pharmacologic glycolysis inhibition (3PO)Expand

In plain English

In an in vitro model, mechanical stretching of cultured periodontal ligament (PDL) fibroblasts increased expression of glycolysis-related genes; this mechanoactivated glycolysis was associated with increased histone H3 lysine 18 lactylation (H3K18la) in PDL fibroblasts and with induction of CXCL1 expression. Pharmacologic inhibition of glycolysis with 3PO reduced glycolytic activity and attenuated the stretch-induced increases in H3K18la and CXCL1 in PDL fibroblasts.

Key findings

  • Mechanical/orthodontic tension promoted expression of glycolysis-related genes in cultured PDL fibroblasts.
  • Mechanoactivated glycolysis was associated with increased histone H3 lysine 18 lactylation (H3K18la) in PDL fibroblasts.
“orthodontic tension promoted the expression of glycolysis-related genes in periodontal ligament (PDL) fibroblasts”
What this piece can’t prove
  • Abstract does not provide experimental details (sample sizes, statistical measures, assay protocols, reagent concentrations) necessary to assess effect magnitudes or reproducibility.

2 further details could not be confirmed from the summary.

3in vitroMechanical tension activates glycolysis in periodontal ligament (PDL) fibroblasts, increasing H3K18 lactylation (H3K18la) and driving CXCL1 transcription via promoter enrichment.CUT&Tag chromatin profiling for H3K18la in PDL fibroblastsExpand

In plain English

CUT&Tag chromatin profiling in periodontal ligament (PDL) fibroblasts identified enrichment of histone H3 lysine 18 lactylation (H3K18la) at the CXCL1 promoter, which corresponded with increased CXCL1 transcription.

Key findings

  • H3K18la is enriched at the promoter region of CXCL1 in PDL fibroblasts as detected by CUT&Tag, and this promoter enrichment is associated with upregulated CXCL1 transcription.
“CUT&Tag analysis revealed that H3K18la was enriched at the promoter region of CXCL1 to upregulate its transcription.”
What this piece can’t prove
  • The abstract does not specify whether enrichment was genome-wide significant or limited to targeted loci, nor does it provide statistical measures linking enrichment to transcription.

2 further details could not be confirmed from the summary.

4in vitroFibroblast-derived CXCL1 reprograms macrophage metabolism (↑ oxidative phosphorylation) and promotes M2 polarization.in vitro macrophage assaysExpand

In plain English

PDL fibroblast-derived CXCL1 increases macrophage oxidative phosphorylation and promotes M2 macrophage polarization in cell-based assays.

Key findings

  • CXCL1 exposure augments oxidative phosphorylation in macrophages.
  • CXCL1 exposure promotes M2 macrophage polarization.
“CXCL1 subsequently augmented oxidative phosphorylation in macrophages and promoted M2 macrophage polarization.”
What this piece can’t prove
  • Cannot determine from abstract whether effects were demonstrated across multiple macrophage models or validated with blocking/neutralization approaches in vitro.

2 further details could not be confirmed from the summary.

5in vivo animalGenetic blockade of CXCL1/CXCR2 signaling (Cxcr2-/- mice) impairs tension-induced M2 polarization in PDL and disrupts the pro-resolving niche that supports bone formation during orthodontic tooth movement.Cxcr2 knockout (Cxcr2-/-) in mouse orthodontic tooth movement modelExpand

In plain English

In a mouse orthodontic tooth movement model, genetic ablation of CXCR2 (Cxcr2-/-) impaired tension-induced M2 macrophage polarization in the periodontal ligament and disrupted the pro-resolving immune microenvironment that is described as conducive to alveolar bone formation during orthodontic tooth movement.

Key findings

  • Genetic blockade of CXCL1/CXCR2 signaling (Cxcr2-/- mice) impairs tension-induced M2 macrophage polarization in the PDL and disrupts the pro-resolving microenvironment described as conducive to bone formation during orthodontic tooth movement.
“the blockade of the CXCL1/CXCR2 axis in vivo, using Cxcr2 knockout (Cxcr2-/-) mice, impaired tension-induced M2 macrophage polarization in PDL”
What this piece can’t prove
  • Summary is based solely on the abstract; no methodological or numerical details (sample size, statistical tests, replicates) are provided.
  • The abstract does not specify whether bone formation was directly measured in Cxcr2-/- mice or is inferred from disruption of the pro-resolving niche.

1 further detail could not be confirmed from the summary.

Finally, the search trail

Method layer

NewsLink found the paper. Tessa takes you deeper.

NewsLink checks the story. Tessa is where you inspect the paper, authors, evidence, and research context.

Papers considered

The selected paper, plus nearby candidates.

PubMed, Europe PMC, Crossref · 15 candidate papers

Candidate

Review for "Targeting H3K18 lactylation to regulate BMP9 expression and enhance osteogenic differentiation of periodontal ligament stem cells under inflammatory conditions"

2025 · Crossref

Source (opens in a new tab)
Candidate

Inflammatory Response in the Periodontal Ligament and Dental Pulp During Orthodontic Tooth Movement

Biological Mechanisms of Tooth Movement · 2021 · Crossref

Source (opens in a new tab)
Candidate

Decision letter for "Targeting H3K18 lactylation to regulate BMP9 expression and enhance osteogenic differentiation of periodontal ligament stem cells under inflammatory conditions"

2026 · Crossref

Source (opens in a new tab)

And 9 more candidates considered.