Screening of an Antibacterial and Coagulation Multifunctional Peptide and Its Application in Wound Healing.

As a new type of drug developed in the era of antibiotics, antimicrobial peptides (AMPs) have great potential in antibacterial, antiviral and antitumor aspects. Different from the principle of action of antibiotics, AMPs have a better effect on resisting drug-resistant bacteria. We synthesized a peptide library using solid-phase synthesis and successfully screened the antimicrobial peptide RKGAK. AMPs provide effective defense against both bacteria and fungi. Research has found that the lowest inhibitory concentrations of RKGAK against S. aureus, E. coli, and C. albicans are 75 μg/mL, 100 μg/mL, and 300 μg/mL. Not only that, this antibacterial peptide also has certain antiviral and coagulation effects. It is a multifunctional peptide that has great potential in many biomedical fields. It also has the advantages of being less likely to develop drug resistance, low hemolytic activity and low cytotoxicity. Loading the peptide into hydrogels has achieved good results in applications that promote wound healing.