Regulation of Cdc42 and its effectors in epithelial morphogenesis

F Pichaud, RF Walther… - Journal of cell …, 2019 - journals.biologists.com
Cdc42 – a member of the small Rho GTPase family – regulates cell polarity across organisms
from yeast to humans. It is an essential regulator of polarized morphogenesis in epithelial …

Glucocorticoid receptor homodimers and glucocorticoid-mineralocorticoid receptor heterodimers form in the cytoplasm through alternative dimerization interfaces

…, C Lamprecht, M Liao, RF Walther… - … and cellular biology, 2001 - Taylor & Francis
Steroid hormone receptors act to regulate specific gene transcription primarily as steroid-specific
dimers bound to palindromic DNA response elements. DNA-dependent dimerization …

[PDF][PDF] Crumbs/DaPKC-dependent apical exclusion of Bazooka promotes photoreceptor polarity remodeling

RF Walther, F Pichaud - Current Biology, 2010 - cell.com
Background In Drosophila epithelial cells, specification and maintenance of the zonula
adherens (za) is crucial to ensure epithelial tissue integrity. This depends on the intertwined …

[HTML][HTML] Hedgehog signaling is a principal inducer of Myosin-II-driven cell ingression in Drosophila epithelia

…, RF Walther, L Rodriguez, P Fichelson, F Pichaud - Developmental cell, 2007 - cell.com
Cell constriction promotes epithelial sheet invagination during embryogenesis across phyla.
However, how this cell response is linked to global patterning information during …

[HTML][HTML] A serine/threonine-rich motif is one of three nuclear localization signals that determine unidirectional transport of the mineralocorticoid receptor to the nucleus

RF Walther, E Atlas, A Carrigan, Y Rouleau… - Journal of Biological …, 2005 - ASBMB
The mineralocorticoid receptor (MR) is a tightly regulated nuclear hormone receptor that
selectively transmits corticosteroid signals. Steroid treatment transforms MR from a …

Cdc42 defines apical identity and regulates epithelial morphogenesis by promoting apical recruitment of Par6-aPKC and Crumbs

F Nunes de Almeida, RF Walther, MT Pressé… - …, 2019 - journals.biologists.com
Cdc42 regulates epithelial morphogenesis together with the Par complex (Baz/Par3-Par6-aPKC),
Crumbs (Crb/CRB3) and Stardust (Sdt/PALS1). However, how these proteins work …

[HTML][HTML] An active nuclear retention signal in the glucocorticoid receptor functions as a strong inducer of transcriptional activation

A Carrigan, RF Walther, HA Salem, D Wu… - Journal of biological …, 2007 - ASBMB
The glucocorticoid receptor (GR) cycles between a naive chaperone-complexed form in the
cytoplasm and a transcriptionally active steroid-bound nuclear form. Nuclear import of GR …

A combination of Notch signaling, preferential adhesion and endocytosis induces a slow mode of cell intercalation in the Drosophila retina

…, M Trylinski, RF Walther, F Schweisguth… - …, 2021 - journals.biologists.com
Movement of epithelial cells in a tissue occurs through neighbor exchange and drives tissue
shape changes. It requires intercellular junction remodeling, a process typically powered by …

Immunofluorescent staining and imaging of the pupal and adult Drosophila visual system

RF Walther, F Pichaud - Nature protocols, 2006 - nature.com
This immunofluorescence protocol can be used to assay cell morphology, cell positioning
and subcellular localization of proteins in the fly eye at stages of development from early …

[HTML][HTML] Nuclear export of the glucocorticoid receptor is accelerated by cell fusion-dependent release of calreticulin

RF Walther, C Lamprecht, A Ridsdale, I Groulx… - Journal of Biological …, 2003 - ASBMB
Nucleocytoplasmic exchange of nuclear hormone receptors is hypothesized to allow for rapid
and direct interactions with cytoplasmic signaling factors. In addition to recycling between …