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Phenotypes Associated with This Genotype
Genotype
MGI:6274241
Allelic
Composition
Katnal2tm1c(EUCOMM)Wtsi/Katnal2tm1c(EUCOMM)Wtsi
Tg(Stra8-icre)1Reb/0
Genetic
Background
involves: C57BL/6N * FVB/NJ
Cell Lines EPD0656_4_A03
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Katnal2tm1c(EUCOMM)Wtsi mutation (0 available); any Katnal2 mutation (201 available)
Tg(Stra8-icre)1Reb mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Spermatogenic defects in Katnal2tm1a(EUCOMM)Wtsi/Katnal2tm1a(EUCOMM)Wtsi Tg(Stra8-icre)1Reb/0 mice

reproductive system
• males exhibit a sperm tail phenotype identical to that seen in Katnal2m1Anu homozygotes
• elongating spermatids frequently exhibit abnormal nuclear morphology
• males exhibit a manchette phenotype identical to that seen in Katnal2m1Anu homozygotes
• multinucleated symplasts are frequently observed in the seminiferous epithelium
• multinucleated symplasts are frequently observed in the seminiferous epithelium
• total epididymal sperm content is reduced by 94.1% relative to control mice; however, testis weight and daily sperm output in the testes are normal, indicating a massive failure of spermiation
• retained elongated spermatids are often observed in stage IX tubules, unlike in control mice
• however, in contrast to Katnal2m1Anu homozygotes, tubulobulbar complex and residual body formation is similar to that observed in control mice

cellular
• males exhibit a sperm tail phenotype identical to that seen in Katnal2m1Anu homozygotes
• elongating spermatids frequently exhibit abnormal nuclear morphology
• males exhibit a manchette phenotype identical to that seen in Katnal2m1Anu homozygotes
• multinucleated symplasts are frequently observed in the seminiferous epithelium

endocrine/exocrine glands
• multinucleated symplasts are frequently observed in the seminiferous epithelium


Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
12/17/2024
MGI 6.24
The Jackson Laboratory