Research progress on the source, function and application of AMPs

Antibacterial peptide, also known as a host defense peptide, is a small molecular peptide that exhibits antibacterial activity. It disrupts the cell membrane structure of bacteria, leading to the release of internal contents and subsequent cell death, all without promoting the development of drug resistance in bacteria. It serves as a crucial component of the body’s innate immunity, forming the initial defense against the invasion of pathogenic microorganisms. However, the functionality of this small molecule peptide extends beyond this role. It also demonstrates positive effects in promoting organism growth, maintaining the balance of beneficial bacteria within organisms, combating cancer, enhancing immune function, and combating viruses, among other benefits. Additionally, it finds applications in biomaterials, food preservation, animal husbandry, and aquaculture. In summary, this small molecular peptide plays a significant role in various domains.