Abstract:
:During development of the central nervous system (CNS), commissural axons grow toward the ventral midline. After crossing the floor plate, they abruptly change their trajectory from the circumferential to the longitudinal axis. The contacts between the commissural axons and the floor plate cells are involved in this axonal guidance, but their mechanisms or structures have not fully been understood. In this study, we found that nectin-1 and -3, immunoglobulin-like cell-cell adhesion molecules, asymmetrically localized at the contact sites between the commissural axons and the floor plate cells, respectively. In vitro perturbation of the endogenous trans-interaction between nectin-1 and -3 caused abnormal fasciculation of the commissural axons and impairment of the contacts, and resulted in failure in longitudinal turns of the commissural axons at the contralateral sites of the rat hindbrain. These results indicate that the contacts between the commissural axons and the floor plate cells are mediated by the hetero-trans-interaction between nectin-1 and -3 and involved in regulation of the trajectory of the commissural axons.
journal_name
Dev Bioljournal_title
Developmental biologyauthors
Okabe N,Shimizu K,Ozaki-Kuroda K,Nakanishi H,Morimoto K,Takeuchi M,Katsumaru H,Murakami F,Takai Ydoi
10.1016/j.ydbio.2004.05.034subject
Has Abstractpub_date
2004-09-15 00:00:00pages
244-56issue
2eissn
0012-1606issn
1095-564Xpii
S0012160604004130journal_volume
273pub_type
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