| Literature DB >> 20550939 |
Haruki Takeuchi1, Kasumi Inokuchi, Mari Aoki, Fumikazu Suto, Akio Tsuboi, Ikuo Matsuda, Misao Suzuki, Atsu Aiba, Shou Serizawa, Yoshihiro Yoshihara, Hajime Fujisawa, Hitoshi Sakano.
Abstract
In the mouse olfactory system, the anatomical locations of olfactory sensory neurons (OSNs) roughly correlate with their axonal projection sites along the dorsal-ventral (D-V) axis of the olfactory bulb (OB). Here we report that an axon guidance receptor, Neuropilin-2 (Nrp2), and its repulsive ligand, Semaphorin-3F (Sema3F), are expressed by OSNs in a complementary manner that is important for establishing olfactory map topography. Sema3F is secreted by early-arriving axons of OSNs and is deposited at the anterodorsal OB to repel Nrp2-positive axons that arrive later. Sequential arrival of OSN axons as well as the graded and complementary expression of Nrp2 and Sema3F by OSNs help to form the topographic order along the D-V axis. Copyright 2010 Elsevier Inc. All rights reserved.Entities:
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Year: 2010 PMID： 20550939 DOI： 10.1016/j.cell.2010.04.041
Source DB: PubMed Journal: Cell ISSN： 0092-8674 Impact factor: 41.582