| First Author | Ghezzi F | Year | 2021 |
| Journal | Elife | Volume | 10 |
| PubMed ID | 34251335 | Mgi Jnum | J:313752 |
| Mgi Id | MGI:6729991 | Doi | 10.7554/eLife.60810 |
| Citation | Ghezzi F, et al. (2021) Non-canonical role for Lpar1-EGFP subplate neurons in early postnatal mouse somatosensory cortex. Elife 10:e60810 |
| abstractText | Subplate neurons (SPNs) are thought to play a role in nascent sensory processing in neocortex. To better understand how heterogeneity within this population relates to emergent function, we investigated the synaptic connectivity of Lpar1-EGFP SPNs through the first postnatal week in whisker somatosensory cortex (S1BF). These SPNs comprise of two morphological subtypes: fusiform SPNs with local axons and pyramidal SPNs with axons that extend through the marginal zone. The former receive translaminar synaptic input up until the emergence of the whisker barrels, a timepoint coincident with significant cell death. In contrast, pyramidal SPNs receive local input from the subplate at early ages but then - during the later time window - acquire input from overlying cortex. Combined electrical and optogenetic activation of thalamic afferents identified that Lpar1-EGFP SPNs receive sparse thalamic innervation. These data reveal components of the postnatal network that interpret sparse thalamic input to direct the emergent columnar structure of S1BF. |
