siRNA-Mediated MELK Knockdown Induces Accelerated Wound Healing with Increased Collagen Deposition

Area of Science:

• Regenerative Medicine
• Molecular Biology
• Dermatology

Background:

• Skin wound healing is a complex biological process with significant clinical and economic impact.
• Current therapies for accelerated wound healing are limited, necessitating novel therapeutic strategies.
• The role of maternal embryonic leucine-zipper kinase (MELK) in skin wound repair is not well understood.

Purpose of the Study:

• To investigate the therapeutic potential of MELK gene silencing for accelerating skin wound healing.
• To evaluate the effects of MELK knockdown on key parameters of wound repair in a preclinical model.

Main Methods:

• A vectorless, transient gene knockdown of MELK was achieved using small interfering RNA (siRNA) in a murine skin wound model.
• Comprehensive analysis included wound size, collagen content (total and type III), vascularization (size and number), cell proliferation and apoptosis, mast cell counts, and immune cell infiltration (CD45, CD11b, CD8a).

Main Results:

• MELK gene silencing significantly accelerated wound closure compared to control groups.
• Increased deposition of total collagen and type III collagen was observed in wounds treated with MELK siRNA.
• Enhanced vascularization and modulated immune cell infiltration were noted, suggesting a pro-regenerative microenvironment.

Conclusions:

• Transient MELK gene silencing via siRNA effectively accelerates skin wound healing in a murine model.
• The findings highlight MELK as a potential therapeutic target for enhancing skin regeneration.
• Further research is warranted to translate these findings into clinical applications for improved wound management.