Proteomics

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Postnatal persistence of hippocampal Cajal-Retzius cells has a critical role in the establishment of the hippocampal circuit


ABSTRACT: Cajal-Retzius (CR) cells are a transient neuron type that populate the postnatal hippocampus. The role of transient cell types and circuits have been vastly addressed in neocortical regions, but poorly studied in the hippocampus. To understand how CR cells persistence influences the maturation of hippocampal circuits, we specifically ablated CR cells from the postnatal hippocampus. We observed layer-specific changes in the dendritic complexity and spine density of CA1 pyramidal cells. We were able to identify significant changes in the expression levels of Latrophilin-2, a postsynaptic guidance molecule known for its role in the entorhinal-hippocampal connectivity. Those findings were supported by changes in the overall synaptic proteomic content in CA1 Stratum Lacunosum-Moleculare.

INSTRUMENT(S): timsTOF Pro

ORGANISM(S): Mus Musculus (mouse)

TISSUE(S): Brain

SUBMITTER: Maike Krause  

LAB HEAD: Giulia Quattrocolo

PROVIDER: PXD042517 | Pride | 2024-05-24

REPOSITORIES: Pride

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Postnatal persistence of hippocampal Cajal-Retzius cells has a crucial role in the establishment of the hippocampal circuit.

Glærum Ingvild Lynneberg IL   Dunville Keagan K   Moan Kristian K   Krause Maike M   Montaldo Nicola Pietro NP   Kirikae Hinako H   Nigro Maximiliano Jose MJ   Sætrom Pål P   van Loon Barbara B   Quattrocolo Giulia G  

Development (Cambridge, England) 20240109 1


Cajal-Retzius (CR) cells are a transient neuron type that populate the postnatal hippocampus. To understand how the persistence of CR cells influences the maturation of hippocampal circuits, we combined a specific transgenic mouse line with viral vector injection to selectively ablate CR cells from the postnatal hippocampus. We observed layer-specific changes in the dendritic complexity and spine density of CA1 pyramidal cells. In addition, transcriptomic analysis highlighted significant changes  ...[more]

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