Pinealon

Pinealon is a short synthetic peptide composed of three amino acids Glu-Asp-Arg, also known as the EDR peptide. Pinealon is suggested to impact the central nervous system, which may lead to behavior modification while also possibly protecting neurons and various cell types from oxidative stress. The primary research focus on this peptide is evaluating its potential to penetrate the blood-brain barrier, cellular membrane, and nuclear membrane. However, researchers have also suggested that it may also interact directly with DNA molecules. Pinealon tripeptide is isolated from another chemical compound, Cortexin. Cortexin is a polypeptide with a particularly low molecular weight. Due to this low weigh, Cortexin has been suggested by researchers to cross the blood-brain barrier to produce potential stimulatory action on the neurotransmitters in the brain.

Overview The neuroprotective and anti-apoptotic potential of the Pinealon peptide has been posited by researchers to be exerted via the MAPK / ERK signaling pathway. The ERK signaling cascade may play a role in the phosphorylation of the substrates, which may lead to elevated neuron plasticity and increased cellular stress. In turn, this action may lead to cellular apoptosis. Similarly, MAPK signaling has been associated with certain metabolic disorders and inflammatory reactions.

Researchers suggest that Pinealon may potentially reduce the synthesis of reaction oxygen species (ROS) on the cellular level. ROS is considered a messenger to MAPK and ERK signaling pathways, and the reduced synthesis may lead to a reduction in signaling reactions, preventing cellular stress and cell death. Studies on Pinealon have suggested a concentration-dependent action. At lower concentrations, the peptide may potentially restrict the synthesis and subsequent accumulation of ROS and cell death. In comparison, the peptide might lead to a modulation of the cell cycle at higher concentrations. Researchers reporting this apparent correlation in peptide presence have suggested that it may exert antioxidant potential at lower concentrations while possibly interacting with the cell genome and altering the cell cycle.