Universität zu Köln

Daniel Rios-Barrera, Luis and Leptin, Maria ORCID: 0000-0001-7097-348X (2022). An endosome-associated actin network involved in directed apical plasma membrane growth. J. Cell Biol., 221 (3). NEW YORK: ROCKEFELLER UNIV PRESS. ISSN 1540-8140

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Abstract

Membrane trafficking plays many roles in morphogenesis, from bulk membrane provision to targeted delivery of proteins and other cargos. In tracheal terminal cells of the Drosophila respiratory system, transport through late endosomes balances membrane delivery between the basal plasma membrane and the apical membrane, which forms a subcellular tube, but it has been unclear how the direction of growth of the subcellular tube with the overall cell growth is coordinated. We show here that endosomes also organize F-actin. Actin assembles around late endocytic vesicles in the growth cone of the cell, reaching from the tip of the subcellular tube to the leading filopodia of the basal membrane. Preventing nucleation of endosomal actin disturbs the directionality of tube growth, uncoupling it from the direction of cell elongation. Severing actin in this area affects tube integrity. Our findings show a new role for late endosomes in directing morphogenesis by organizing actin, in addition to their known role in membrane and protein trafficking.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Daniel Rios-Barrera, Luis UNSPECIFIED UNSPECIFIED UNSPECIFIED Leptin, Maria UNSPECIFIED orcid.org/0000-0001-7097-348X UNSPECIFIED
URN:	urn:nbn:de:hbz:38-672837
DOI:	10.1083/jcb.202106124
Journal or Publication Title:	J. Cell Biol.
Volume:	221
Number:	3
Date:	2022
Publisher:	ROCKEFELLER UNIV PRESS
Place of Publication:	NEW YORK
ISSN:	1540-8140
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CELL-MIGRATION; F-ACTIN; DROSOPHILA; MORPHOGENESIS; TRAFFICKING; ADHESION; PROTEIN; LUMEN; WASH; MECHANISMS Multiple languages Cell Biology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/67283