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Mouse Vmd2 expression and bestrophin localization during normal development
Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Genetics and Pathology.
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Manuscript (Other academic)
URN: urn:nbn:se:uu:diva-90084OAI: oai:DiVA.org:uu-90084DiVA: diva2:162259
Available from: 2002-12-17 Created: 2002-12-17 Last updated: 2010-01-13Bibliographically approved
In thesis
1. Analysis of the Gene and Protein Causing Best Macular Dystrophy
Open this publication in new window or tab >>Analysis of the Gene and Protein Causing Best Macular Dystrophy
2003 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Best macular dystrophy (BMD) is an autosomal dominant inherited eye disease with a juvenile onset. Accumulation of the pigment lipofuscin in the retinal pigment epithelium can later cause macular degeneration and loss of vision. BMD have histopathologic similarities with age-related macular degeneration, the most common cause of blindness among elderly. BMD diagnosis is made with fundus examination and electrophysiology. The VMD2 gene, causing BMD, has previously been localized to 11q13 using linkage and recombination of a 12 generation family with BMD.

In this study the genetic region has been further narrowed using polymorphic markers in the BMD family. A human homolog for a C. elegans protein family, expressed in retina, was identified as the VMD2 gene. It has a 1755 bp open reading frame with 11 exons and encodes a 585 amino acid protein called bestrophin. Mutation analysis of the VMD2 gene in BMD families from Sweden, Denmark and Netherlands revealed 15 missense mutations, altering single amino acids in bestrophin, accumulating in the N-terminal half of the protein. VMD2 expression analysis with in situ hybridization revealed specific localization in the retinal pigment epithelium and Northern blot showed expression in retina and brain. Clinical and genetic analysis of a BMD family with generally late onset revealed a novel bestrophin mutation.

Analysis of mouse Vmd2 and bestrophin during development showed presence of mouse bestrophin in retinal pigment epithelium at postnatal day 10 and in photoreceptor outer segments during the entire postnatal period. Vmd2 expression levels were highest around birth.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2003. 42 p.
Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine, ISSN 0282-7476 ; 1216
Genetics, VMD2, bestrophin, macular degenration, mutation analysis, Genetik
National Category
Medical Genetics
Research subject
Clinical Genetics
urn:nbn:se:uu:diva-3220 (URN)91-554-5494-1 (ISBN)
Public defence
2003-01-17, Rudbecksalen, Uppsala, 13:15
Available from: 2002-12-17 Created: 2002-12-17Bibliographically approved

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