Low-Frequency Electromagnetic Fields Enhance the Directional Migration of Mesenchymal Stem Cells.

Abstract

Electromagnetic fields (EMF) can promote various types of cell migration, including mesenchymal stem cell (MSCs) migration; however, their effects on MSCs polarity and directional migration remain unclear. To investigate whether EMF enhances directional migration at wound edges, we exposed MSCs to EMF and analyzed β-COP (a polarity marker) and γ-tubulin (a centrosome marker) to assess cellular polarity. Migratory behaviors were systematically quantified. Results demonstrated increased β-COP asymmetric redistribution in EMF-treated cells, with β-COP localizing anterior to the nucleus and γ-tubulin accumulating in cortical regions at wound margins. Importantly, EMF significantly improved the directional persistence of MSCs migration toward wounds compared to controls. These findings indicate that EMF specifically enhances MSCs directional migration through polarity regulation, advancing our understanding of EMF's therapeutic potential in wound healing and clinical translation.

AI evidence extraction

Main findings

In EMF-treated MSCs, β-COP showed increased asymmetric redistribution with localization anterior to the nucleus, and γ-tubulin accumulated in cortical regions at wound margins. EMF exposure significantly improved directional persistence of MSC migration toward wounds compared with controls.

Outcomes measured

• Directional migration (directional persistence) of MSCs toward wounds
• Cell polarity markers (β-COP asymmetric redistribution/localization)
• Centrosome marker localization (γ-tubulin accumulation at wound margins)

Limitations

• No EMF exposure parameters reported in the abstract (e.g., frequency, field strength, duration).
• In vitro study; clinical relevance is not directly tested in the abstract.
• Sample size and quantitative effect sizes are not provided in the abstract.

{
    "study_type": "in_vitro",
    "exposure": {
        "band": "ELF",
        "source": null,
        "frequency_mhz": null,
        "sar_wkg": null,
        "duration": null
    },
    "population": "Mesenchymal stem cells (MSCs)",
    "sample_size": null,
    "outcomes": [
        "Directional migration (directional persistence) of MSCs toward wounds",
        "Cell polarity markers (β-COP asymmetric redistribution/localization)",
        "Centrosome marker localization (γ-tubulin accumulation at wound margins)"
    ],
    "main_findings": "In EMF-treated MSCs, β-COP showed increased asymmetric redistribution with localization anterior to the nucleus, and γ-tubulin accumulated in cortical regions at wound margins. EMF exposure significantly improved directional persistence of MSC migration toward wounds compared with controls.",
    "effect_direction": "benefit",
    "limitations": [
        "No EMF exposure parameters reported in the abstract (e.g., frequency, field strength, duration).",
        "In vitro study; clinical relevance is not directly tested in the abstract.",
        "Sample size and quantitative effect sizes are not provided in the abstract."
    ],
    "evidence_strength": "low",
    "confidence": 0.7399999999999999911182158029987476766109466552734375,
    "peer_reviewed_likely": "yes",
    "keywords": [
        "low-frequency electromagnetic fields",
        "EMF",
        "mesenchymal stem cells",
        "MSC",
        "cell migration",
        "directional persistence",
        "cell polarity",
        "β-COP",
        "γ-tubulin",
        "wound edge",
        "wound healing"
    ],
    "suggested_hubs": []
}

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