If fact be told, all antidepressant pills lengthen the expression and signaling of mind-derived neurotrophic instruct (BDNF). These pills act through tyrosine kinase receptor 2 (TRKB), the receptor for BDNF, to administer neuronal plasticity. Casarotto et al. investigated the aptitude interactions among TRKB, ldl cholesterol, and antidepressants. The authors realized that a dimer of TRKB kinds a binding pocket, where several antidepressants from assorted drug classes bind with a low nonetheless physiologically necessary affinity. This low-diploma binding depends on membrane ldl cholesterol to stabilize the TRKB structure in synaptic membranes and thereby promotes BDNF signaling. Such reveal binding to TRKB and promotion of BDNF-mediated plasticity can even simply attributable to this truth be a typical mechanism of motion for anti-depressant pills.
Cell, 184, 1299 (2021).