Neuromodulatory control of inhibitory network arborization in the developing postnatal neocortex.

ABSTRACT: Interregional neuronal communication is pivotal to instructing and adjusting cortical circuit assembly. Subcortical neuromodulatory systems project long-range axons to the cortex and affect cortical processing. However, their roles and signaling mechanisms in cortical wiring remain poorly understood. Here, we explored whether and how the cholinergic system regulates inhibitory axonal ramification of neocortical chandelier cells (ChCs), which control spike generation by innervating axon initial segments of pyramidal neurons. We found that acetylcholine (ACh) signaling through nicotinic ACh receptors (nAChRs) and downstream T-type voltage-dependent calcium (Ca²⁺) channels cell-autonomously controls axonal arborization in developing ChCs through regulating filopodia initiation. Thi

SUBMITTER: Steinecke A 

PROVIDER: S-EPMC8906727 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature