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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Meig1tm1Shpi
targeted mutation 1, Shmuel Pietrokovski
MGI:4421665
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Meig1tm1Shpi/Meig1tm1Shpi involves: 129S1/Sv * 129X1/SvJ * BALB/c MGI:4421666


Genotype
MGI:4421666
hm1
Allelic
Composition
Meig1tm1Shpi/Meig1tm1Shpi
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * BALB/c
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Meig1tm1Shpi mutation (0 available); any Meig1 mutation (14 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system
• increase in apoptosis of germ cells, mainly haploid round spermatids, at P17 and P30
• sperm are immotile
• mature elongated spermatids and spermatozoa are absent unlike in wild-type mice
• overall the spermatogenic process is delayed
• however, early stages of spermatogenesis are normal
• the number of spermatozoa is reduced to 10% of wild-type
• the few produced sperm have awkward shapes and broken tails unlike in wild-type mice
• the few produced sperm have broken tails unlike in wild-type mice
• the few produced sperm have broken tails unlike in wild-type mice

cellular
• the number of spermatozoa is reduced to 10% of wild-type
• the few produced sperm have awkward shapes and broken tails unlike in wild-type mice
• the few produced sperm have broken tails unlike in wild-type mice
• increase in apoptosis of germ cells, mainly haploid round spermatids, at P17 and P30
• sperm are immotile





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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
05/07/2024
MGI 6.23
The Jackson Laboratory