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Microscopy Based Methods for the Assessment of Epithelial Cell Migration During In Vitro Wound Healing
Published on: January 2, 2018
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Chronic Wound Healing by Amniotic Membrane: TGF-β and EGF Signaling Modulation in Re-epithelialization
Catalina Ruiz-Cañada1, Ángel Bernabé-García1, Sergio Liarte1
1Laboratorio de Regeneración, Oncología Molecular y TGF-β, IMIB-Arrixaca, Murcia, Spain.
Frontiers in Bioengineering and Biotechnology
|July 23, 2021
Summary
Amniotic membrane (AM) application promotes chronic wound healing by enhancing re-epithelialization through MAP kinase and JNK pathways. It fine-tunes TGF-β signaling and improves cell migration for faster wound repair.
Area of Science:
- Regenerative Medicine
- Wound Healing Biology
- Cell Signaling
Background:
- Chronic wounds present a significant clinical challenge, often characterized by stalled healing processes.
- Amniotic membrane (AM) is recognized for its therapeutic potential in promoting tissue regeneration.
- Understanding the molecular mechanisms of AM's effect on wound healing is crucial for optimizing its clinical application.
Purpose of the Study:
- To investigate the molecular pathways by which amniotic membrane (AM) influences chronic wound healing.
- To elucidate the role of AM in keratinocyte behavior, including re-epithelialization and migration.
- To explore the interaction between AM, growth factor signaling, and cell adhesion dynamics in the context of wound repair.
Main Methods:
- Utilized cell models, specifically keratinocytes, to study the effects of AM.
- Analyzed the activation of key signaling pathways, including mitogen-activated protein (MAP) kinase and c-Jun N-terminal kinase (JNK).
- Assessed the expression and activation of critical proteins involved in cell migration and adhesion, such as c-Jun and Paxillin, and investigated the modulation of transforming growth factor-beta (TGF-β) signaling.
Main Results:
- AM application activated MAP kinase and JNK pathways in keratinocytes, leading to increased c-Jun expression and enhanced re-epithelialization.
- AM modulated transforming growth factor-beta (TGF-β) signaling via epidermal growth factor (EGF) signaling, restoring stalled wound healing processes.
- AM promoted cell migration by increasing the turnover and activation of focal adhesion proteins like Paxillin.
Conclusions:
- Amniotic membrane effectively promotes chronic wound healing, particularly re-epithelialization, by activating specific cellular pathways.
- AM's therapeutic effect involves a balanced modulation of TGF-β signaling and enhancement of cell migration machinery.
- Further research is needed to fully elucidate the comprehensive mechanisms underlying AM's regenerative capabilities in wound healing.
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