An ENU-induced mutation in Rs1h causes disruption of retinal structure and function

Monica Jablonski, Claudia Dalke, Xiao Fei Wang, Lu Lu, Kenneth F. Manly, Walter Pretsch, Jack Favor, Machelle T. Pardue, Eugene M. Rinchik, Robert Williams, Daniel Goldowitz, Jochen Graw

Research output: Contribution to journalArticle

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Abstract

Purpose: The 44TNJ mutant mouse was generated by the Tennessee Mouse Genome Consortium (TMGC) using an ENU-based mutagenesis screen to produce recessive mutations that affect the eye and brain. Herein we present its retinal phenotype and genetic basis. Methods: Fourth generation offspring (G4) and confirmed mutants were examined using slit lamp biomicroscopy, funduscopy, histology, immunohistochemistry, and electroretinography (ERG). 44TNJ mutant mice were crossed to C3BLiA or DBA/2 mice for chromosomal mapping purposes. Linkage analysis by PCR-based microsatellite marker genotyping was used to identify the disease locus. The Rs1h cDNA and its genomic DNA were sequenced directly. Results: The 44TNJ pedigree was the first mutant pedigree identified by the ocular phenotyping domain of the TMGC. Examination of the fundus revealed numerous small and homogeneous intraretinal microflecks in the peripapillary region, which became courser and more irregular in the periphery. Males were typically more affected than females. Histology and immunohistochemistry revealed a disruption of the lamination of the retina, particularly at both margins of the outer nuclear layer, along with reduced calbindin immunostaining. ERG analyses revealed reduced amplitudes of both a-waves and b-waves. Linkage analysis mapped the 44TNJ mutation to the X chromosome close to the marker DXMit117. Sequence analysis of the positional candidate gene Rs1h revealed a T->C exchange at the second base of intron 2 of the Rs1h gene. Conclusions: We have generated and characterized a mutant mouse line that was produced using ENU-based mutagenesis. The 44TNJ pedigree manifests with photoreceptor dysfunction and concurrent structural and functional aberrations at the post-receptoral level. Genetic analysis revealed a mutation in Rs1h, making this the first murine model of X-linked retinoschisis in which the gene is expressed.

Original languageEnglish (US)
Pages (from-to)569-581
Number of pages13
JournalMolecular Vision
Volume11
StatePublished - Jul 27 2005

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Pedigree
Mutation
Electroretinography
Mutagenesis
Histology
Immunohistochemistry
Retinoschisis
Genome
Genes
Calbindins
Inbred DBA Mouse
X Chromosome
Microsatellite Repeats
Introns
Sequence Analysis
Retina
Complementary DNA
Phenotype
Polymerase Chain Reaction
DNA

All Science Journal Classification (ASJC) codes

  • Ophthalmology

Cite this

Jablonski, M., Dalke, C., Wang, X. F., Lu, L., Manly, K. F., Pretsch, W., ... Graw, J. (2005). An ENU-induced mutation in Rs1h causes disruption of retinal structure and function. Molecular Vision, 11, 569-581.

An ENU-induced mutation in Rs1h causes disruption of retinal structure and function. / Jablonski, Monica; Dalke, Claudia; Wang, Xiao Fei; Lu, Lu; Manly, Kenneth F.; Pretsch, Walter; Favor, Jack; Pardue, Machelle T.; Rinchik, Eugene M.; Williams, Robert; Goldowitz, Daniel; Graw, Jochen.

In: Molecular Vision, Vol. 11, 27.07.2005, p. 569-581.

Research output: Contribution to journalArticle

Jablonski, M, Dalke, C, Wang, XF, Lu, L, Manly, KF, Pretsch, W, Favor, J, Pardue, MT, Rinchik, EM, Williams, R, Goldowitz, D & Graw, J 2005, 'An ENU-induced mutation in Rs1h causes disruption of retinal structure and function', Molecular Vision, vol. 11, pp. 569-581.
Jablonski, Monica ; Dalke, Claudia ; Wang, Xiao Fei ; Lu, Lu ; Manly, Kenneth F. ; Pretsch, Walter ; Favor, Jack ; Pardue, Machelle T. ; Rinchik, Eugene M. ; Williams, Robert ; Goldowitz, Daniel ; Graw, Jochen. / An ENU-induced mutation in Rs1h causes disruption of retinal structure and function. In: Molecular Vision. 2005 ; Vol. 11. pp. 569-581.
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abstract = "Purpose: The 44TNJ mutant mouse was generated by the Tennessee Mouse Genome Consortium (TMGC) using an ENU-based mutagenesis screen to produce recessive mutations that affect the eye and brain. Herein we present its retinal phenotype and genetic basis. Methods: Fourth generation offspring (G4) and confirmed mutants were examined using slit lamp biomicroscopy, funduscopy, histology, immunohistochemistry, and electroretinography (ERG). 44TNJ mutant mice were crossed to C3BLiA or DBA/2 mice for chromosomal mapping purposes. Linkage analysis by PCR-based microsatellite marker genotyping was used to identify the disease locus. The Rs1h cDNA and its genomic DNA were sequenced directly. Results: The 44TNJ pedigree was the first mutant pedigree identified by the ocular phenotyping domain of the TMGC. Examination of the fundus revealed numerous small and homogeneous intraretinal microflecks in the peripapillary region, which became courser and more irregular in the periphery. Males were typically more affected than females. Histology and immunohistochemistry revealed a disruption of the lamination of the retina, particularly at both margins of the outer nuclear layer, along with reduced calbindin immunostaining. ERG analyses revealed reduced amplitudes of both a-waves and b-waves. Linkage analysis mapped the 44TNJ mutation to the X chromosome close to the marker DXMit117. Sequence analysis of the positional candidate gene Rs1h revealed a T->C exchange at the second base of intron 2 of the Rs1h gene. Conclusions: We have generated and characterized a mutant mouse line that was produced using ENU-based mutagenesis. The 44TNJ pedigree manifests with photoreceptor dysfunction and concurrent structural and functional aberrations at the post-receptoral level. Genetic analysis revealed a mutation in Rs1h, making this the first murine model of X-linked retinoschisis in which the gene is expressed.",
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AU - Dalke, Claudia

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AU - Manly, Kenneth F.

AU - Pretsch, Walter

AU - Favor, Jack

AU - Pardue, Machelle T.

AU - Rinchik, Eugene M.

AU - Williams, Robert

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N2 - Purpose: The 44TNJ mutant mouse was generated by the Tennessee Mouse Genome Consortium (TMGC) using an ENU-based mutagenesis screen to produce recessive mutations that affect the eye and brain. Herein we present its retinal phenotype and genetic basis. Methods: Fourth generation offspring (G4) and confirmed mutants were examined using slit lamp biomicroscopy, funduscopy, histology, immunohistochemistry, and electroretinography (ERG). 44TNJ mutant mice were crossed to C3BLiA or DBA/2 mice for chromosomal mapping purposes. Linkage analysis by PCR-based microsatellite marker genotyping was used to identify the disease locus. The Rs1h cDNA and its genomic DNA were sequenced directly. Results: The 44TNJ pedigree was the first mutant pedigree identified by the ocular phenotyping domain of the TMGC. Examination of the fundus revealed numerous small and homogeneous intraretinal microflecks in the peripapillary region, which became courser and more irregular in the periphery. Males were typically more affected than females. Histology and immunohistochemistry revealed a disruption of the lamination of the retina, particularly at both margins of the outer nuclear layer, along with reduced calbindin immunostaining. ERG analyses revealed reduced amplitudes of both a-waves and b-waves. Linkage analysis mapped the 44TNJ mutation to the X chromosome close to the marker DXMit117. Sequence analysis of the positional candidate gene Rs1h revealed a T->C exchange at the second base of intron 2 of the Rs1h gene. Conclusions: We have generated and characterized a mutant mouse line that was produced using ENU-based mutagenesis. The 44TNJ pedigree manifests with photoreceptor dysfunction and concurrent structural and functional aberrations at the post-receptoral level. Genetic analysis revealed a mutation in Rs1h, making this the first murine model of X-linked retinoschisis in which the gene is expressed.

AB - Purpose: The 44TNJ mutant mouse was generated by the Tennessee Mouse Genome Consortium (TMGC) using an ENU-based mutagenesis screen to produce recessive mutations that affect the eye and brain. Herein we present its retinal phenotype and genetic basis. Methods: Fourth generation offspring (G4) and confirmed mutants were examined using slit lamp biomicroscopy, funduscopy, histology, immunohistochemistry, and electroretinography (ERG). 44TNJ mutant mice were crossed to C3BLiA or DBA/2 mice for chromosomal mapping purposes. Linkage analysis by PCR-based microsatellite marker genotyping was used to identify the disease locus. The Rs1h cDNA and its genomic DNA were sequenced directly. Results: The 44TNJ pedigree was the first mutant pedigree identified by the ocular phenotyping domain of the TMGC. Examination of the fundus revealed numerous small and homogeneous intraretinal microflecks in the peripapillary region, which became courser and more irregular in the periphery. Males were typically more affected than females. Histology and immunohistochemistry revealed a disruption of the lamination of the retina, particularly at both margins of the outer nuclear layer, along with reduced calbindin immunostaining. ERG analyses revealed reduced amplitudes of both a-waves and b-waves. Linkage analysis mapped the 44TNJ mutation to the X chromosome close to the marker DXMit117. Sequence analysis of the positional candidate gene Rs1h revealed a T->C exchange at the second base of intron 2 of the Rs1h gene. Conclusions: We have generated and characterized a mutant mouse line that was produced using ENU-based mutagenesis. The 44TNJ pedigree manifests with photoreceptor dysfunction and concurrent structural and functional aberrations at the post-receptoral level. Genetic analysis revealed a mutation in Rs1h, making this the first murine model of X-linked retinoschisis in which the gene is expressed.

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