Dihexa is an experimental cognitive peptide that may help the brain build stronger connections between neurons instead of just temporarily boosting neurotransmitters like many nootropics do. It works through the HGF c Met pathway, Targeting HGF c MET signaling to regulate the tumor microenvironment: Implications for counteracting tumor immune evasion Cell Communication and Signaling Springer Nature Link HGF c Met 1 integrin signalling axis induces tunneling nanotubes in A549 lung adenocarcinoma cells Life Science Alliance Hepatocyte Growth Factor MET Activator Rescues Working Memory Deficits after Repeated Mild Traumatic Brain Injury Katelyn A. Martino, Arush Nakhre, Renee M. Demarest, David M. Devilbiss, 2025 Targeting the HGF MET axis in cancer: therapeutic promise for natural compounds ScienceDirect