Review reveals astrocyte expansion and morphological complexity driving cortical folding in gyrencephalic ferrets, indicating essential glial roles in mammalian cognitive evolution.
Key Points
To elucidate the molecular mechanisms governing astrocyte proliferation and morphological complexity, and to clarify their specific contributions to cortical folding in complex mammalian brains.
Reviewed comparative neuroanatomy literature on human, rodent, and ferret brain organization.
Utilized ferrets as a gyrencephalic (folded brain) model organism to investigate molecular pathways controlling astrocyte numbers during brain development.
Human astrocyte transplantation into mouse models enhances learning and memory capacities alongside expanded individual astrocyte territorial domains.
Astrocytes in species with folded brains exhibit dramatic increases in morphological diversity and total abundance compared to lissencephalic rodents.
Molecular regulation of astrocyte proliferation directly coordinates with the structural formation of cortical gyri and sulci during neocortical development.