PMID- 11906695 OWN - NLM STAT- MEDLINE DCOM- 20020408 LR - 20190822 IS - 0896-6273 (Print) IS - 0896-6273 (Linking) VI - 33 IP - 6 DP - 2002 Mar 14 TI - Neuropilin-2 mediates axonal fasciculation, zonal segregation, but not axonal convergence, of primary accessory olfactory neurons. PG - 877-92 AB - The mechanisms that underlie axonal pathfinding of vomeronasal neurons from the vomeronasal organ (VNO) in the periphery to select glomeruli in the accessory olfactory bulb (AOB) are not well understood. Neuropilin-2, a receptor for secreted semaphorins, is expressed in V1R- and V3R-expressing, but not V2R-expressing, postnatal vomeronasal neurons. Analysis of the vomeronasal nerve in neuropilin-2 (npn-2) mutant mice reveals pathfinding defects at multiple choice points. Vomeronasal sensory axons are severely defasciculated and a subset innervates the main olfactory bulb (MOB). While most axons of V1R-expressing neurons reach the AOB and converge into distinct glomeruli in stereotypic locations, they are no longer restricted to their normal anterior AOB target zone. Thus, Npn-2 and candidate pheromone receptors play distinct and complementary roles in promoting the wiring and patterning of sensory neurons in the accessory olfactory system. FAU - Cloutier, Jean Francois AU - Cloutier JF AD - Department of Neuroscience, The Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205, USA. FAU - Giger, Roman J AU - Giger RJ FAU - Koentges, Georgy AU - Koentges G FAU - Dulac, Catherine AU - Dulac C FAU - Kolodkin, Alex L AU - Kolodkin AL FAU - Ginty, David D AU - Ginty DD LA - eng GR - R01MH59199/MH/NIMH NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Neuron JT - Neuron JID - 8809320 RN - 0 (Ligands) RN - 0 (Membrane Glycoproteins) RN - 0 (Membrane Proteins) RN - 0 (Nerve Growth Factors) RN - 0 (Nerve Tissue Proteins) RN - 0 (Receptors, Cell Surface) RN - 144713-63-3 (Neuropilin-1) SB - IM MH - Animals MH - Axons/*metabolism MH - Embryo, Mammalian/anatomy & histology/physiology MH - In Situ Hybridization MH - Ligands MH - Membrane Glycoproteins/genetics/metabolism MH - Membrane Proteins/genetics/metabolism MH - Mice MH - Mice, Transgenic MH - Nerve Growth Factors/metabolism MH - Nerve Tissue Proteins/genetics/*metabolism MH - Neuropilin-1 MH - Olfactory Bulb/cytology/growth & development/physiology MH - Olfactory Receptor Neurons/cytology/*metabolism MH - Rats MH - Receptors, Cell Surface/genetics/metabolism MH - Vomeronasal Organ/cytology/*metabolism EDAT- 2002/03/22 10:00 MHDA- 2002/04/12 10:01 CRDT- 2002/03/22 10:00 PHST- 2002/03/22 10:00 [pubmed] PHST- 2002/04/12 10:01 [medline] PHST- 2002/03/22 10:00 [entrez] AID - S0896627302006359 [pii] AID - 10.1016/s0896-6273(02)00635-9 [doi] PST - ppublish SO - Neuron. 2002 Mar 14;33(6):877-92. doi: 10.1016/s0896-6273(02)00635-9.