Biological molecules are small chains of building blocks called amino acids that have been joined together by peptide (amide) junctions. Peptides are found in the structure of all living organisms and playing an important role in a variety of biological activities when Peptide chains become of more than 100 amino acids they are called proteins, which are actually the structure units of different parts of the human and animal body. Like creatine, which is a protein that was part of the structure of hair and nails in humans and animals; It forms the fork, horn, feathers, wings, and scales, and collagen is another protein that contributes in the structure of tendons, ligaments, and enamel and bones.
Peptides in the pharmaceutical industry
Nowadays, using of peptides as one of the important category of new generation medicines, which are increasing, due to their general attributes such as high effectiveness, low risk side effects and achieving appropriate therapeutic results. In recent 10 years, pharmaceutical peptides have got FDA approval much faster than other medicines, and so far, more than 60 types of peptides have been produced as medicines by reputable pharmaceutical companies, supplied and distributed worldwide.
The main challenges in this way, are development of pharmaceutical peptide, their instability of chemical structures and the rapid change in their effectiveness, which can be improved and solved by making changes in their structure. Peptides are usually used in the treatment of metabolic diseases (such as diabetes and obesity), oncology (blood), neurological and psychological problems, supportive medicines for chemotherapy of cancers and modulation of the immune system. Also, in the field of antibiotic properties of peptides in order to prevent medicine resistance against infections, a lot of research is underway in research centers and universities.