First Author | Takemoto M | Year | 2002 |
Journal | Eur J Neurosci | Volume | 16 |
Issue | 6 | Pages | 1168-72 |
PubMed ID | 12383247 | Mgi Jnum | J:242551 |
Mgi Id | MGI:5905553 | Doi | 10.1046/j.1460-9568.2002.02166.x |
Citation | Takemoto M, et al. (2002) Ephrin-B3-EphA4 interactions regulate the growth of specific thalamocortical axon populations in vitro. Eur J Neurosci 16(6):1168-72 |
abstractText | The role was studied of ephrin-B3, a ligand of the Eph family of tyrosine kinase receptors, in the formation of cortical connectivity. In situ hybridization and immunohistochemistry showed that EphA4, a receptor of ephrin-B3, was expressed in the lateral thalamus (visual and somaotosensory thalamus) of the developing rat brain, but not in the medial thalamic nuclei which project to the limbic cortex. Correspondingly, ephrin-B3 was expressed strongly in the developing limbic cortex including amygdala, entorhinal cortex and hippocampus. To examine the action of ephrin-B3 on thalamic axons, either lateral or medial thalamic explants were cultured on membranes obtained from ephrin-B3-expressing COS cells. Axonal growth was inhibited for cells from the lateral thalamus but not from the medial thalamus. These results suggest that ephrin-B3 contributes to regional specificity by suppressing axonal growth of lateral thalamic neurons. |