Level D· Scientific groundwork from lab and animal studiesLaboratory StudyPubMed

Gut microbiota alteration contributes to bone marrow mesenchymal stem cells connexin43 response to high-fat diet induced obesity in mice.

Ning K., Chen Y., Yang X., Dou X., Liu S., Wang DE.

Laboratory Study, published in Int J Obes (Lond) (2026) — summary generated from the PubMed abstract.

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Level D· Scientific groundwork from lab and animal studiesEvidence level of this study

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

  • Level A · Stronger Clinical Evidence
  • Level B · Emerging clinical evidence with positive signals
  • Level C · Early human research exploring benefits
  • Level D · Scientific groundwork from lab and animal studies
  • Emerging · Emerging topic under active research
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Study type
Laboratory Study
Journal
Int J Obes (Lond) (2026)
Country
England
Reported sample size
—
Source database
PubMed
PMID
42203970
DOI
10.1038/s41366-026-02104-4

Abstract (original English)

Bone marrow mesenchymal stem cells (BMSCs) contribute to controlling adipose tissue homeostasis and may be a potential target for obesity therapy. Since lack of connexin43(Cx43) in mesenchymal stem cells (MSCs) is known to combat high-fat diet (HFD)-induced adiposity. Also, HFD is a well-known risk factor for gut microbiota dysbiosis. Here we attempt to address the interaction between HFD, gut microbiota, and Cx43 deficiency in BMSCs during the development of obesity. BMSC-specific Cx43 knockout (Prrx1-Cre;Cx43 flox/flox (cKO)) and control littermate (Cx43 flox/flox (flox))mice were fed a regular chow diet or a HFD for 8 weeks. Cecal microbiome composition was assessed by 16S ribosomal RNA (rRNA) sequencing, and further analyzing correlation between gut microbiota and obesogenic parameters. Moreover, transplantation fecal microbiota was used to probe the salutary effect of BMSC Cx43. HFD fed cKO mice notably altered cecal microbiome composition as proved by a distinctively clustered separation from flox mice. Concomitantly, Allobaculum induced by HFD was strongly correlated positively with body weight, glucose intolerance, and adipose mass. The recipients with gut microbiota from cKO mice displayed anti-obesity phenotype as the donors. Gut microbiota alteration may be one main reason for the salutary effect of BMSC Cx43 knockout on body adiposity.

What this study does not prove

  • • This study does not prove SVF is an approved treatment or a replacement for standard care.
  • • This is preclinical work; animal or laboratory results cannot be applied to humans.

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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