Which peptide do you think will shape research over the next decade?

Every few years, a peptide captures the attention of the scientific community. From growth factor research to mitochondrial signalling and metabolic regulation, the field continues to evolve rapidly. If you could choose one peptide that you believe has the greatest long-term research potential, which would it be? Would you choose: • GHK-Cu • MOTS-C • Retatrutide • BPC-157 • TB-500 • Or something else? Share your thoughts and, if possible, explain why based on published research rather than popularity. Keep it mechanism- and literature-focused. No vendor talk.