Evidence mapPaperPMID 29555409Full record

ArticleCytotherapy2018

Functional organic cation transporters mediate osteogenic response to metformin in human umbilical cord mesenchymal stromal cells.

Faisal E Al Jofi, Tao Ma, Dong Guo, Monica P Schneider, Yan Shu, Hockin H K Xu, Abraham Schneider

Open access · greenAbstract read
In one paragraph

Article in Cytotherapy, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.0field-weighted citation impact, top 25% 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

16 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
  2. Metformin and bone metabolism: unraveling their direct and indirect effects.Therapeutic advances in endocrinology and metabolism · 2025
    Review
  3. Article
  4. Bone Loss in Diabetes Mellitus: Diaporosis.International journal of molecular sciences · 2024
    Review
  5. Review
  6. Review
  7. mTOR Signaling Pathway in Bone Diseases Associated with Hyperglycemia.International journal of molecular sciences · 2023
    Review
  8. Impact of Metformin on Periodontal and Peri-Implant Soft and Hard Tissue.International journal of environmental research and public health · 2023
    Review
  9. Review
  10. Review
  11. Article
  12. Review
  13. Article
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  15. Article
  16. 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

7 authors at 1 institution in 2 countries.

Faisal E Al JofiDepartment of Oncology and Diagnostic Sciences, School of Dentistry, University of Maryland, Baltimore, Maryland, USA; Department of Preventive Dental Science, Division of Periodontics, Imam Abdulrahman Bin Faisal University, College of Dentistry, Dammam, Saudi Arabia.
Tao MaDepartment of Oncology and Diagnostic Sciences, School of Dentistry, University of Maryland, Baltimore, Maryland, USA.
Dong GuoDepartment of Pharmaceutical Sciences, School of Pharmacy, University of Maryland, Baltimore, Maryland, USA.
Monica P SchneiderDepartment of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Maryland, Baltimore, Maryland, USA.
Yan ShuDepartment of Pharmaceutical Sciences, School of Pharmacy, University of Maryland, Baltimore, Maryland, USA; Greenebaum Comprehensive Cancer Center, Program in Oncology, School of Medicine, University of Maryland, Baltimore, Maryland, USA.
Hockin H K XuGreenebaum Comprehensive Cancer Center, Program in Oncology, School of Medicine, University of Maryland, Baltimore, Maryland, USA; Biomaterials and Tissue Engineering Division, Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, Maryland, USA; Center for Stem Cell Biology and Regenerative Medicine, School of Medicine, University of Maryland, Baltimore, Maryland, USA.
Abraham SchneiderDepartment of Oncology and Diagnostic Sciences, School of Dentistry, University of Maryland, Baltimore, Maryland, USA; Greenebaum Comprehensive Cancer Center, Program in Oncology, School of Medicine, University of Maryland, Baltimore, Maryland, USA. Electronic address: schneider66@umaryland.edu.
University of Maryland, Baltimore · US

Funding

NIDCR NIH HHS R01 DE023578NIGMS NIH HHS R01 GM099742
6 · The paper itself

Abstract

backgroundCompelling evidence indicates that metformin, a low-cost and safe orally administered biguanide prescribed to millions of type 2 diabetics worldwide, induces the osteoblastic differentiation of mesenchymal stromal cells (MSCs) through the 5' adenosine monophosphate (AMP)-activated protein kinase (AMPK) pathway. As a highly hydrophilic cationic compound, metformin uptake is facilitated by cell membrane organic cation transporters (OCTs) of the solute carrier 22A gene family. We hypothesized that to effectively enhance osteogenic differentiation, and ultimately bone regeneration, metformin must gain access into functional OCT-expressing MSCs.

methodsData was obtained through immunoblotting, cellular uptake, mineralization and gene expression assays.

resultsWe demonstrate for the first time that functional OCTs are expressed in human-derived MSCs from umbilical cord Wharton's jelly, an inexhaustible source of nonembryonic MSCs with proven osteogenic potential. A clinically relevant concentration of metformin led to AMPK activation, enhanced mineralized nodule formation and increased expression of the osteogenic transcription factor Runt-related transcription factor 2 (RUNX2). Indeed, targeting OCT function through pharmacological and genetic approaches markedly blunted these responses.

conclusionsOur findings indicate that functional OCT expression in UC-MSCs is a biological prerequisite that facilitates the intracellular uptake of metformin to induce an osteogenic effect. Future pre-clinical studies are warranted to investigate whether the expression of functional OCTs may serve as a potential biomarker to predict osteogenic responses to metformin.

Indexed as

OsteogenesisAdenylate KinaseCalcification, PhysiologicCell DifferentiationCell SurvivalCore Binding Factor Alpha 1 SubunitEnzyme ActivationHumansMesenchymal Stem CellsMetforminOrganic Cation Transport ProteinsSignal TransductionUmbilical CordAdenylate KinaseCore Binding Factor Alpha 1 SubunitMetforminOrganic Cation Transport Proteinsbone regenerationmesenchymal stromal cellsmetforminorganic cation transportersosteogenesisstem cellsumbilical cord

Identifiers

PMID29555409
PMCPMC5948160
OpenAlexW2792745065

What Socratic holds

Textmetadata
LicenceTDM
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.