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Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
The mouse rib-vertebrae mutation disrupts anterior-posterior somite patterning and genetically interacts with a Delta1 null allele.
Mech. Dev. 95, 35-46 (2000)
Rib-vertebrae (rv) is an autosomal recessive mutation in mouse that affects the morphogenesis of the vertebral column. Axial skeleton defects vary along the anterior-posterior body axis, and include split vertebrae and neural arches, and fusions of adjacent segments. Here, we show that defective somite patterning underlies the vertebral malformations and altered Notch signaling may contribute to the phenotype. Somites in affected regions are irregular in size and shape, epithelial morphology is disrupted, and anterior-posterior somite patterning is abnormal, reminiscent of somite defects obtained in loss-of-function alleles of Notch signaling pathway components. Expression of Dll1, Dll3, Lfng and Notch1 is altered in rv mutant embryos, and rv and Dll1lacZ, a null allele of the Notch ligand Delta1, genetically interact. Mice double heterozygous for rv and Dll1lacZ, show vertebral defects, and one copy of Dll1lacZ on the homozygous rv background enhances the mutant phenotype and is lethal in the majority of cases. However, fine genetic mapping places rv into an interval on chromosome seven that does not contain a gene encoding a known component of the Notch signaling pathway.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
Rib-vertebrae Mouse Delta1 Anterior-posterior somite patterning
ISSN (print) / ISBN
0925-4773
e-ISSN
1872-6356
Zeitschrift
Mechanisms of Development
Quellenangaben
Band: 95,
Seiten: 35-46
Verlag
Elsevier
Nichtpatentliteratur
Publikationen
Begutachtungsstatus
Peer reviewed
Institut(e)
Institute of Experimental Genetics (IEG)