Regulation of laminar and area patterning of mammalian neocortex and behavioural implications.
We will focus on describing our recent studies on the laminar and area patterning of the mammalian neocortex. We describe a novel IgCAM, MDGA1, that is a unique laminar and area specific marker, and functional studies showing its influence on radial migration. We also describe time-lapse imaging studies showing that the pre-plate and its derivative, the subplate, is a cellular protomap of the cortical ventricular zone, and the implications of this finding for mechanisms of arealization and development of area-specific TCA projections. We will summarize studies of each of the four transcription factors, Emx2, Pax6, Couptfl and Sp8, expressed by cortical progenitors and involved in specifying area patterning. Finally, we will describe studies showing that area size dictates performance at modality-specific behaviours.
O'Leary
Dennis D M
DD
Molecular Neurobiology Laboratory, The Salk Institute, 10010 North Torrey Pines Road, La Jolla, CA 96037, USA.
Chou
Shen-Ju
SJ
Hamasaki
Tadashi
T
Sahara
Setsuko
S
Takeuchi
Akihide
A
Thuret
Sandrine
S
Leingärtner
Axel
A
D000818:Animals; D001519:Behavior / Q000502:physiology*; D019521:Body Patterning / Q000235:genetics / Q000502:physiology*; D015815:Cell Adhesion Molecules / Q000235:genetics / Q000378:metabolism; D058851:GPI-Linked Proteins; D018507:Gene Expression Regulation, Developmental; D006801:Humans; D008954:Models, Biological; D019579:Neocortex / Q000196:embryology* / Q000254:growth & development / Q000378:metabolism; D019006:Neural Cell Adhesion Molecules; D054258:Neural Plate / Q000196:embryology / Q000378:metabolism; D009929:Organ Size; D013234:Stem Cells / Q000378:metabolism; D014157:Transcription Factors / Q000502:physiology
D015815:Cell Adhesion Molecules; D058851:GPI-Linked Proteins; C460759:MDGA1 protein, human; D019006:Neural Cell Adhesion Molecules; D014157:Transcription Factors