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PMID:16109771

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Citation

Bogani, D, Willoughby, C, Davies, J, Kaur, K, Mirza, G, Paudyal, A, Haines, H, McKeone, R, Cadman, M, Pieles, G, Schneider, JE, Bhattacharya, S, Hardy, A, Nolan, PM, Tripodis, N, Depew, MJ, Chandrasekara, R, Duncan, G, Sharpe, PT, Greenfield, A, Denny, P, Brown, SD, Ragoussis, J and Arkell, RM (2005) Dissecting the genetic complexity of human 6p deletion syndromes by using a region-specific, phenotype-driven mouse screen. Proc. Natl. Acad. Sci. U.S.A. 102:12477-82

Abstract

Monosomy of the human chromosome 6p terminal region results in a variety of congenital malformations that include brain, craniofacial, and organogenesis abnormalities. To examine the genetic basis of these phenotypes, we have carried out an unbiased functional analysis of the syntenic region of the mouse genome (proximal Mmu13). A genetic screen for recessive mutations in this region recovered thirteen lines with phenotypes relevant to a variety of clinical conditions. These include two loci that cause holoprosencephaly, two that underlie anophthalmia, one of which also contributes to other craniofacial abnormalities such as microcephaly, agnathia, and palatogenesis defects, and one locus responsible for developmental heart and kidney defects. Analysis of heterozygous carriers of these mutations shows that a high proportion of these loci manifest with behavioral activity and sensorimotor deficits in the heterozygous state. This finding argues for the systematic, reciprocal phenotypic assessment of dominant and recessive mouse mutants. In addition to providing a resource of single gene mutants that model 6p-associated disorders, the work reveals unsuspected genetic complexity at this region. In particular, many of the phenotypes associated with 6p deletions can be elicited by mutation in one of a number of genes. This finding implies that phenotypes associated with contiguous gene deletion syndromes can result not only from dosage sensitivity of one gene in the region but also from the combined effect of monosomy for multiple genes that function within the same biological process.

Links

PubMed PMC1194901 Online version:10.1073/pnas.0500584102

Keywords

Animals; Anophthalmos/genetics; Brain/abnormalities; Chromosome Deletion; Chromosomes, Human, Pair 6/genetics; Congenital Abnormalities/genetics; Craniofacial Abnormalities/genetics; Female; Genes, Lethal; Genes, Recessive; Genetic Testing/methods; Heart Defects, Congenital/genetics; Humans; Kidney/abnormalities; Male; Mice; Mice, Inbred C3H; Mice, Inbred C57BL; Mice, Mutant Strains; Multigene Family; Mutation; Phenotype; Species Specificity; Syndrome

Significance

Annotations

Gene product Qualifier GO Term Evidence Code with/from Aspect Extension Notes Status

MOUSE:SOX4

involved_in

GO:0003289: atrial septum primum morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

MOUSE:SOX4

involved_in

GO:0003215: cardiac right ventricle morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

MOUSE:SOX4

involved_in

GO:0003183: mitral valve morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

MOUSE:SOX4

involved_in

GO:0060993: kidney morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

MOUSE:SOX4

involved_in

GO:0060412: ventricular septum morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

MOUSE:SOX4

involved_in

GO:0035910: ascending aorta morphogenesis

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete


See also

References

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