---
_id: '7704'
abstract:
- lang: eng
text: Gradients of axon guidance molecules instruct the formation of continuous
neural maps, such as the retinotopic map in the vertebrate visual system. Here
we show that molecular gradients can also instruct the formation of a discrete
neural map. In the fly olfactory system, axons of 50 classes of olfactory receptor
neurons (ORNs) and dendrites of 50 classes of projection neurons (PNs) form one-to-one
connections at discrete units called glomeruli. We provide expression, loss- and
gain-of-function data to demonstrate that the levels of transmembrane Semaphorin-1a
(Sema-1a), acting cell-autonomously as a receptor or part of a receptor complex,
direct the dendritic targeting of PNs along the dorsolateral to ventromedial axis
of the antennal lobe. Sema-1a also regulates PN axon targeting in higher olfactory
centers. Thus, graded expression of Sema-1a contributes to connection specificity
from ORNs to PNs and then to higher brain centers, ensuring proper representation
of olfactory information in the brain.
article_processing_charge: No
article_type: original
author:
- first_name: Takaki
full_name: Komiyama, Takaki
last_name: Komiyama
- first_name: Lora Beatrice Jaeger
full_name: Sweeney, Lora Beatrice Jaeger
id: 56BE8254-C4F0-11E9-8E45-0B23E6697425
last_name: Sweeney
orcid: 0000-0001-9242-5601
- first_name: Oren
full_name: Schuldiner, Oren
last_name: Schuldiner
- first_name: K. Christopher
full_name: Garcia, K. Christopher
last_name: Garcia
- first_name: Liqun
full_name: Luo, Liqun
last_name: Luo
citation:
ama: Komiyama T, Sweeney LB, Schuldiner O, Garcia KC, Luo L. Graded expression of
semaphorin-1a cell-autonomously directs dendritic targeting of olfactory projection
neurons. Cell. 2007;128(2):399-410. doi:10.1016/j.cell.2006.12.028
apa: Komiyama, T., Sweeney, L. B., Schuldiner, O., Garcia, K. C., & Luo, L.
(2007). Graded expression of semaphorin-1a cell-autonomously directs dendritic
targeting of olfactory projection neurons. Cell. Elsevier. https://doi.org/10.1016/j.cell.2006.12.028
chicago: Komiyama, Takaki, Lora B. Sweeney, Oren Schuldiner, K. Christopher Garcia,
and Liqun Luo. “Graded Expression of Semaphorin-1a Cell-Autonomously Directs Dendritic
Targeting of Olfactory Projection Neurons.” Cell. Elsevier, 2007. https://doi.org/10.1016/j.cell.2006.12.028.
ieee: T. Komiyama, L. B. Sweeney, O. Schuldiner, K. C. Garcia, and L. Luo, “Graded
expression of semaphorin-1a cell-autonomously directs dendritic targeting of olfactory
projection neurons,” Cell, vol. 128, no. 2. Elsevier, pp. 399–410, 2007.
ista: Komiyama T, Sweeney LB, Schuldiner O, Garcia KC, Luo L. 2007. Graded expression
of semaphorin-1a cell-autonomously directs dendritic targeting of olfactory projection
neurons. Cell. 128(2), 399–410.
mla: Komiyama, Takaki, et al. “Graded Expression of Semaphorin-1a Cell-Autonomously
Directs Dendritic Targeting of Olfactory Projection Neurons.” Cell, vol.
128, no. 2, Elsevier, 2007, pp. 399–410, doi:10.1016/j.cell.2006.12.028.
short: T. Komiyama, L.B. Sweeney, O. Schuldiner, K.C. Garcia, L. Luo, Cell 128 (2007)
399–410.
date_created: 2020-04-30T10:37:08Z
date_published: 2007-01-26T00:00:00Z
date_updated: 2024-01-31T10:14:48Z
day: '26'
doi: 10.1016/j.cell.2006.12.028
extern: '1'
intvolume: ' 128'
issue: '2'
language:
- iso: eng
month: '01'
oa_version: None
page: 399-410
publication: Cell
publication_identifier:
issn:
- 0092-8674
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: Graded expression of semaphorin-1a cell-autonomously directs dendritic targeting
of olfactory projection neurons
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 128
year: '2007'
...