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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Rtbdntm1.1Itl
targeted mutation 1.1, Ingenious Targeting Laboratory
MGI:6356819
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Rtbdntm1.1Itl/Rtbdntm1.1Itl involves: 129S4/SvJaeSor * 129S6/SvEvTac * C57BL/6 * C57BL/6NTac MGI:6363419
ht2
Rtbdntm1.1Itl/Rtbdn+ involves: 129S4/SvJaeSor * 129S6/SvEvTac * C57BL/6 * C57BL/6NTac MGI:6363420


Genotype
MGI:6363419
hm1
Allelic
Composition
Rtbdntm1.1Itl/Rtbdntm1.1Itl
Genetic
Background
involves: 129S4/SvJaeSor * 129S6/SvEvTac * C57BL/6 * C57BL/6NTac
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rtbdntm1.1Itl mutation (0 available); any Rtbdn mutation (9 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
vision/eye
• at P45 (i.e. prior to onset of photoreceptor degeneration), neural retina contains significantly lower levels of flavin adenine dinucleotide (FAD, ~46.1%), flavin mononucleotide (FMN, ~45%), and riboflavin (RF, ~32%) relative to wild-type retinas
• at P120, but not at P45, neural retina shows a significant reduction in ATP level relative to wild-type retinas
• at P240, but not at P60, mice show a ~45% reduction in the number of cone photoreceptor cells relative to wild-type controls
• at P240, but not at P60, mice show a ~36.8% reduction in the number of rod photoreceptor cells relative to wild-type controls
• TEM analysis revealed minor but obvious morphological changes in the central area of the outer segment (OS) at all ages examined (P60, P120, and P240)
• however, no major structural defects are seen at the OS/RPE interface or at the OS/IS junction
• abnormally low levels of FAD and FMN in the neural retina lead to progressive degeneration of both rods and cones
• at P120 and P240, mice show a ~37.5% and ~52.8% reduction, respectively, in scotopic a-wave amplitude relative to wild-type controls
• however, no significant changes are observed at P30 and P60
• at P120 and P240, mice show a ~25%% and ~32% reduction, respectively, in photopic b-wave amplitude relative to wild-type controls
• however, no significant changes are observed at P30 and P60
• mice show a late-onset but progressive decline in photopic ERG responses
• mice show a late-onset but progressive decline in scotopic ERG responses
• at P120, but not at P60, mice show a significant reduction in scotopic a-wave and b-wave amplitudes at higher light intensities relative to wild-type controls

nervous system
• at P240, but not at P60, mice show a ~45% reduction in the number of cone photoreceptor cells relative to wild-type controls
• at P240, but not at P60, mice show a ~36.8% reduction in the number of rod photoreceptor cells relative to wild-type controls
• TEM analysis revealed minor but obvious morphological changes in the central area of the outer segment (OS) at all ages examined (P60, P120, and P240)
• however, no major structural defects are seen at the OS/RPE interface or at the OS/IS junction
• abnormally low levels of FAD and FMN in the neural retina lead to progressive degeneration of both rods and cones




Genotype
MGI:6363420
ht2
Allelic
Composition
Rtbdntm1.1Itl/Rtbdn+
Genetic
Background
involves: 129S4/SvJaeSor * 129S6/SvEvTac * C57BL/6 * C57BL/6NTac
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rtbdntm1.1Itl mutation (0 available); any Rtbdn mutation (9 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
vision/eye
• at P240, but not at P60, mice show a ~23% reduction in the number of cone photoreceptor cells relative to wild-type controls
• at P240, but not at P60, mice show a ~19.9% reduction in the number of rod photoreceptor cells relative to wild-type controls
• at P240, mice show a ~23% reduction in scotopic a-wave amplitude relative to wild-type controls
• however, no significant changes are observed at P120
• at P240, mice show a ~20% reduction in photopic b-wave amplitude relative to wild-type controls
• however, no significant changes are observed at P120

nervous system
• at P240, but not at P60, mice show a ~23% reduction in the number of cone photoreceptor cells relative to wild-type controls
• at P240, but not at P60, mice show a ~19.9% reduction in the number of rod photoreceptor cells relative to wild-type controls





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last database update
11/19/2024
MGI 6.24
The Jackson Laboratory