Structural and functional analysis of a homotrimeric collagen peptide

Area of Science:

• Biomaterials Science
• Dermatology
• Biochemistry

Background:

• Collagen peptides are crucial for skin health and wound healing.
• Developing stable and effective collagen-based biomaterials is an ongoing challenge.
• Biomimetic approaches can enhance the efficacy of collagen peptides.

Purpose of the Study:

• To chemically synthesize a homotrimeric collagen peptide.
• To evaluate the safety and biological efficacy of the synthesized peptide.
• To assess its potential in promoting collagen synthesis and skin regeneration.

Main Methods:

• Chemical synthesis and structural characterization (CD, IR spectroscopy).
• Thermal stability analysis (TG-DSC), molecular weight, and amino acid composition.
• In vitro cytotoxicity, UV-induced photoaging, and in vivo studies in mice.

Main Results:

• High purity (99.1%) peptide with balanced amino acid composition and stable triple-helical conformation.
• Excellent thermal stability (Tm = 326.15°C) and no observed cytotoxicity.
• Significant enhancement of collagen and elastin synthesis in vitro; improved skin structure and angiogenesis in vivo.

Conclusions:

• A novel, highly pure, and thermally stable homotrimeric collagen peptide was synthesized.
• The peptide demonstrates significant efficacy in promoting collagen synthesis and improving skin parameters.
• Potential applications in cosmetics and medical devices requiring heat sterilization are highlighted.