Targeting the Brain With Three Amino Acids

Pinealon is a tripeptide (Glu-Asp-Gly) bioregulator aimed at the brain — conceptually targeting the same organ as the much better-characterized Semax and Selank, but via the ultra-short-peptide transcriptional framework rather than defined receptor signaling.

The obvious challenge is the blood-brain barrier: getting any peptide into the brain is hard, and a three-amino-acid sequence's ability to cross it and then modulate neuronal gene expression specifically is a tall mechanistic order. Members discuss Pinealon as the extreme end of the bioregulator concept — interesting target, thinnest-tier evidence, and a serious delivery problem. The thread below weighs the concept against the biological realities honestly.