Article (Scientific journals)
EphA4-ADAM10 Interplay Patterns the Cochlear Sensory Epithelium through Local Disruption of Adherens Junctions.
Defourny, Jean; Peuckert, Christiane; Kullander, Klas et al.
2019In iScience, 11, p. 246-257
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Keywords :
Cell Biology; Developmental Biology; Physiology
Abstract :
[en] The cochlear sensory epithelium contains a functionally important triangular fluid-filled space between adjacent pillar cells referred to as the tunnel of Corti. However, the molecular mechanisms leading to local cell-cell separation during development remain elusive. Here we show that EphA4 associates with ADAM10 to promote the destruction of E-cadherin-based adhesions between adjacent pillar cells. These cells fail to separate from each other, and E-cadherin abnormally persists at the pillar cell junction in EphA4 forward-signaling-deficient mice, as well as in the presence of ADAM10 inhibitor. Using immunolabeling and an in situ proximity ligation assay, we found that EphA4 forms a complex with E-cadherin and its sheddase ADAM10, which could be activated by ephrin-B2 across the pillar cell junction to trigger the cleavage of E-cadherin. Altogether, our findings provide a new molecular insight into the regulation of adherens junctions, which might be extended to a variety of physiological or pathological processes.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Defourny, Jean  ;  Université de Liège - ULiège > Cellular and tissular biology
Peuckert, Christiane
Kullander, Klas
Malgrange, Brigitte  ;  Université de Liège - ULiège > Developmental Neurobiology
Language :
English
Title :
EphA4-ADAM10 Interplay Patterns the Cochlear Sensory Epithelium through Local Disruption of Adherens Junctions.
Publication date :
2019
Journal title :
iScience
eISSN :
2589-0042
Publisher :
Elsevier, Cambridge, United States - Massachusetts
Volume :
11
Pages :
246-257
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Copyright (c) 2019 The Authors. Published by Elsevier Inc. All rights reserved.
Available on ORBi :
since 16 January 2019

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