Systematically Assessing Natural Compounds' Wound Healing Potential with Spheroid and Scratch Assays

Area of Science:

• Cellular biology
• Tissue regeneration
• Wound healing research

Background:

• Impaired wound healing, common in diseases like diabetes, necessitates understanding cellular processes.
• Key processes include cellular proliferation for cell replacement and cell motility for wound edge repair.

Purpose of the Study:

• To establish in vitro models for studying tissue regeneration and evaluating potential wound healing compounds.
• To investigate the effects of manuka honey (MH) on cellular proliferation and motility in wound healing models.

Main Methods:

• Utilized a scaffold-free 3D spheroid model to assess cell proliferation and viability.
• Employed a 2D scratch wound assay with collagen staining to analyze cell motility and wound coverage.
• Tested the efficacy of manuka honey (MH) on both in vitro models.

Main Results:

• 3D spheroids showed reduced viability and disaggregation when exposed to hydrogen peroxide (H2O2).
• Manuka honey (MH) supported spheroid health, indicated by size and viability.
• In scratch assays, MH promoted wound closure, decreased collagen production, and increased cellular coverage.

Conclusions:

• The developed in vitro models provide insights into cellular mechanisms of wound healing.
• Manuka honey (MH) shows promise as a therapeutic agent for wound healing by enhancing cellular processes.
• These models serve as valuable teaching and standardization tools for undergraduate research laboratories.