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Title: Sesn1 is a novel gene for left-right asymmetry and mediating nodal signaling
Authors: Peeters, Hilde ×
Voz, Marianne L
Verschueren, Kristin
De Cat, Bart
Pendeville, Hélène
Thienpont, Bernard
Schellens, Ann
Belmont, John W
David, Guido
Van de Ven, Willem
Fryns, Jean-Pierre
Gewillig, Marc
Huylebroeck, Danny
Peers, Bernard
Devriendt, Koenraad #
Issue Date: Oct-2006
Series Title: Human Molecular Genetics vol:15 issue:22 pages:3369-77
Abstract: Remarkable progress has been made in understanding the molecular mechanisms underlying left-right asymmetry in vertebrate animal models but little is known on left-right axis formation in humans. Previously, we identified SESN1 (also known as PA26) as a candidate gene for heterotaxia by positional cloning of the breakpoint regions of a de novo translocation in a heterotaxia patient. In this study, we show by means of a zebrafish sesn1-knockdown model that Sesn1 is required for normal embryonic left-right determination. In this model, developmental defects and expression data of genes implicated in vertebrate left-right asymmetry indicate a role for Sesn1 in mediating Nodal signaling. In the lateral plate mesoderm, Nodal signaling plays a central role in left-right axis formation in vertebrates and is mediated by FoxH1 transcriptional induction. In line with this, we show that Sesn1 physically interacts with FoxH1 or a FoxH1-containing complex. Mutation analysis in a panel of 234 patients with isolated heterotaxia did not reveal mutations, indicating that these are only exceptional causes of human heterotaxia. In this study, we identify SESN1 as an indispensable gene for vertebrate left-right asymmetry and a new player in mediating Nodal signaling.
ISSN: 0964-6906
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Biology (Celgen) (-)
Molecular Genetics Section (-)
Clinical Genetics Section (-)
Cardiovascular Developmental Biology
Laboratory for Genetics of Human Development
Department of Human Genetics - miscellaneous
× corresponding author
# (joint) last author

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