TABLE 1.
Mouse | Mutation | Laminin α2 expression | Phenotype# | Time of death | References |
dy/dy | Spontaneous, unknown | Reduced expression of normal sized laminin α2 | Moderate muscular dystrophy Peripheral neuropathy | Before 6 months of age | Sunada et al., 1994; Xu et al., 1994a |
dy2J/dy2 | Spontaneous splice site mutation in LN domain | Slightly reduced expression of truncated laminin α2 missing LN domain | Mild muscular dystrophy Peripheral neuropathy | After 6 months of age | Xu et al., 1994b; Sunada et al., 1995 |
dy6J/dy6J | Spontaneous, unknown | Unknown | Moderate (?) muscular dystrophy Peripheral neuropathy | Before 6 months of age | https://www.jax.org/strain/003589 |
dy7J/dy7J | ENU-induced missense mutation in LN domain | Normal levels of normal sized laminin α2 | Mild muscular dystrophy Peripheral neuropathy | After 6 months of age | Patton et al., 2008 |
dyW/dyW | Knock-out | Severely reduced expression of truncated laminin α2 missing LN domain | Severe muscular dystrophy Peripheral neuropathy | 5–12 weeks of age | Kuang et al., 1998b; Willmann et al., 2017 |
dy3K/dy3K | Knock-out | Complete deficiency | Very severe muscular dystrophy Peripheral neuropathy | 3 weeks of age | Miyagoe et al., 1997 |
dy8J/dy8J (extinct) | Spontaneous, unknown | Unknown | Severe (?) muscular dystrophy Peripheral neuropathy | 3–4 weeks of age | https://www.jax.org/strain/009692 |
dyPas/dyPas (extinct) | Spontaneous, retrotransposal insertion between exon 34 and 35 | Complete deficiency | Severe muscular dystrophy Peripheral neuropathy | Before 13 weeks of age | Besse et al., 2003 |
The symbol “#” denotes description of muscular dystrophy severity (mild, moderate, severe, and very severe). The severity is based on age of onset, histopathological severity and time of death. The symbol “?” denotes characterization of mice remains to be published. Description of severity is based on information on https://www.jax.org/.