Porter DDL, Henry SN, Ahmed S, Rizzo AL, Makhlouf R, Gregg C, Morton PD. Neuroblast migration along cellular substrates in the developing porcine brain.
Stem Cell Reports 2022;
17:2097-2110. [PMID:
35985331 PMCID:
PMC9481921 DOI:
10.1016/j.stemcr.2022.07.015]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 07/22/2022] [Accepted: 07/23/2022] [Indexed: 11/27/2022] Open
Abstract
In the past decade it has become evident that neuroblasts continue to supply the human cortex with interneurons via unique migratory streams shortly following birth. Owing to the size of the human brain, these newborn neurons must migrate long distances through complex cellular landscapes to reach their final locations. This process is poorly understood, largely because of technical difficulties in acquiring and studying neurotypical postmortem human samples along with diverging developmental features of well-studied mouse models. We reasoned that migratory streams of neuroblasts utilize cellular substrates, such as blood vessels, to guide their trek from the subventricular zone to distant cortical targets. Here, we evaluate the association between young interneuronal migratory streams and their preferred cellular substrates in gyrencephalic piglets during the developmental equivalent of human birth, infancy, and toddlerhood.
Migratory streams of neuroblasts are preserved through postnatal swine development
Evidence of young neocortical interneurons within migratory streams
Neuroblasts are tightly associated with vascular and astrocytic cellular substrates
Harm to migratory interneurons or their substrates may have lifelong consequences
Collapse