These SOD1-G93A transgenic mice express a G93A mutant form of human SOD1 and may be useful in studying neuromuscular disorders such as Amyotrophic Lateral Sclerosis (ALS or Lou Gehrig's Disease).
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Dr. Mark E. Gurney, Tetra Discovery Partners
Mice hemizygous for this SOD1-G93A (also called G93A-SOD1) transgene are viable and fertile, with transgenic expression of a G93A mutant form of human SOD1. This founder line (often referred to as G1H) is reported to have high transgene copy number. Hemizygotes exhibit a phenotype similar to amyotrophic lateral sclerosis (ALS) in humans; becoming paralyzed in one or more limbs with paralysis due to loss of motor neurons from the spinal cord. Transgenic mice have an abbreviated life span: 50% survive at 128.9+/-9.1 days (in contrast to C57BL/6J background where 50% survival is observed at 157.1+/-9.3 days).
In contrast to LPS-induced microglia and activated M1/M2 macrophages, spinal cord microglia activated by disease progression do not upregulate genes that display a bias to either an M1 (neurotoxic) phenotype or an M2 (protective) phenotype. The pattern of gene expression in SOD1G93A activated microglia represents a unique ALS-specific signature.
When maintaining a live colony, it has been the experience of The Jackson Laboratory that male mice are aggressive. It is our recommendation that no more than 4 males are housed in a box.
These SOD1-G93A (also called G93A-SOD1) transgenic mice may be useful in studying neuromuscular disorders, including Amyotrophic Lateral Sclerosis (ALS or Lou Gehrig's Disease).
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The SOD1-G93A (or G93A-SOD1) transgene was designed with a mutant human SOD1 gene (harboring a single amino acid substitution of glycine to alanine at codon 93) driven by its endogenous human SOD1 promoter. This transgene was injected into fertilized B6SJLF1 mouse eggs and founder animals were obtained. Transgenic mice on a mixed B6SJL genetic background were sent to The Jackson Laboratory.
|Expressed Gene||SOD1, superoxide dismutase 1, human|
|Site of Expression|
|Allele Name||transgene insertion 1, Mark E Gurney|
|Allele Type||Transgenic (Inserted expressed sequence, Humanized sequence)|
|Allele Synonym(s)||(G93A)Tg+; G1H; G93A; G93A SOD1; G93A+; G93AGurdl; G93A-SOD1; Gur1-G93A; hSOD1G93A; SOD1 G93A; SOD1 Tg; SOD1G93A; Tg(G93A-SOD1)1Gur; Tg(SOD1-G93A)1Gur; TgN(SOD1-G93A)1Gur; TgN[SOD1-G93A]1Gur|
|Gene Symbol and Name||Tg(SOD1*G93A)1Gur, transgene insertion 1, Mark E Gurney|
|Promoter||SOD1, superoxide dismutase 1, human|
|Expressed Gene||SOD1, superoxide dismutase 1, human|
|Strain of Origin||(C57BL/6 x SJL)F1|
|General Note||This line, G1H, was derived from the original G1 line (now designated Tg(SOD1*G93A)2Gur) reported in J:32665. |
Transgenic mice on a background that involves C57BL/6 and SJL express high levels of the transgene with a 4-fold increase in SOD activity, and exhibit a phenotype similar to amyotrophic lateral sclerosis (ALS) in humans. Hemizygous transgenic mice become paralyzed in one or more limbs and have a life span of approximately 19-23 weeks. Paralysis is due to loss of motor neurons from the spinal cord.
|Molecular Note||This transgenic subline (designated G1H in J:76718) is derived from the G1 parental transgenic line (originally described in J:32665). This line carries a 40% expansion in transgene copy number compared to the original G1 line (described in J:32665, in MGI as Tg(SOD1*G93A)2Gur). The transgene construct is composed of the human SOD1 gene carrying a glycine to alanine transition at position 93 (G93A). The G93A mutation does not alter the activity of the protein. This line carries a high copy number maps to Mus Chr12:97,165,800 (coordinates from MGSC ver 37, mm9).|
|Mutations Made By|| |
Dr. Mark Gurney, Tetra Discovery Partners
The strain is maintained by breeding hemizygous carriers (preferably males) to B6SJLF1 hybrids. When maintaining a live colony, it has been the experience of The Jackson Laboratory that male mice are aggressive. It is our recommendation that no more than 4 males are housed in a box. Expected coat colors from breeding are "White Bellied Agouti, Black, Albino, Tan w/pink eyes."
When using the SOD1-G93A mouse strain in a publication, please cite the originating article(s) and include JAX stock #002726 in your Materials and Methods section.
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