Ten_m3 regulates eye-specific patterning in the mammalian visual pathway and is required for binocular vision.

Abstract:

:Binocular vision requires an exquisite matching of projections from each eye to form a cohesive representation of the visual world. Eye-specific inputs are anatomically segregated, but in register in the visual thalamus, and overlap within the binocular region of primary visual cortex. Here, we show that the transmembrane protein Ten_m3 regulates the alignment of ipsilateral and contralateral projections. It is expressed in a gradient in the developing visual pathway, which is consistently highest in regions that represent dorsal visual field. Mice that lack Ten_m3 show profound abnormalities in mapping of ipsilateral, but not contralateral, projections, and exhibit pronounced deficits when performing visually mediated behavioural tasks. It is likely that the functional deficits arise from the interocular mismatch, because they are reversed by acute monocular inactivation. We conclude that Ten_m3 plays a key regulatory role in the development of aligned binocular maps, which are required for normal vision.

journal_name

PLoS Biol

journal_title

PLoS biology

authors

Leamey CA,Merlin S,Lattouf P,Sawatari A,Zhou X,Demel N,Glendining KA,Oohashi T,Sur M,Fässler R

doi

10.1371/journal.pbio.0050241

subject

Has Abstract

pub_date

2007-09-01 00:00:00

pages

e241

issue

9

eissn

1544-9173

issn

1545-7885

pii

07-PLBI-RA-0234

journal_volume

5

pub_type

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