Branched short elastin-like peptides with temperature responsiveness obtained by EDTA-mediated multimerization.

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Molecular Engineering

Background:

• Elastin-like peptides (ELPs) are stimuli-responsive polymers known for reversible coacervation.
• Short ELPs offer advantages in synthesis and amino acid incorporation compared to long ELPs.
• Investigating short ELPs is crucial for developing novel temperature-responsive materials.

Purpose of the Study:

• To synthesize and characterize branched short ELP analogs.
• To explore the temperature-responsive properties of these novel ELP multimers.
• To determine if multimerization of short ELPs can induce coacervation.

Main Methods:

• Synthesis of branched ELP analogs using (FPGVG)n chains (n=1 or 2).
• Multimerization of short ELP chains using ethylenediaminetetraacetic acid (EDTA).
• Characterization of coacervation behavior in aqueous solutions.

Main Results:

• Synthesized multimers composed of four F1 chains or two to four F2 chains.
• Obtained multimers exhibited temperature-triggered coacervation in aqueous solutions.
• Structural analysis confirmed multimers retained features of linear ELPs.

Conclusions:

• Multimerization of short ELPs (F1, F2) successfully induces coacervation.
• Branched short ELP multimers are effective temperature-responsive molecules.
• These findings facilitate the development of peptide tags for temperature-responsive biomaterials.