This strain is currently unavailable due to replenishing of cryopreserved stocks (June 2018).
RIIIS/J mice have prolonged bleeding times with normal platelet activity and low levels of factor VIII:C and plasma von Willebrand factor antigen, making it a good animal model for human von Willebrand disease. RIIIS/J mice also produce a low antibody response to several bacterial polysaccharide antigens and are reported to be resistant to collagen induced arthritis. RIIIS/J mice carry a spontaneous mutation, ldis1, that leads to a partial or complete disruption of the lens and cataract formation.Read More +
This strain is currently unavailable due to replenishing of cryopreserved stocks.
RIIIS/J mice have prolonged bleeding times with normal platelet activity and low levels of factor VIII:C and plasma von Willebrand factor antigen, making it a good animal model for human von Willebrand disease. This bleeding tendency is an incomplete dominant, autosomal trait. RIIIS/J mice also produce a low antibody response to several bacterial polysaccharide antigens and are reported to be resistant to collagen induced arthritis. Despite a B cell immunodeficiency, RIIS/J mice develop severe experimental autoimmune myasthenia gravis (EAMG) (Tuzun et al., 2004).
RIII/J have a high incidence of mammary tumors and ovarian tumors. RIIIS/J mice carry Mtv8, and Mtv14, but high incidence of tumors has not been reported in these mice. In fact, some studies indicate a resistance to chemically induced tumors. RIIIS/J mice have been reported to develop far fewer lung tumors than A/J or SWR/J mice subsequent to Urethan treatment. BALB/c x RIII F1 males are also highly resistant to diethylstilbesterol-cholesterol induced testicular tumors even though BALB/c is highly susceptible. RIIIS/J mice carry a spontaneous mutation, ldis1, that leads to a partial or complete disruption of the lens and cataract (Jablonski M, et al, 2004).
The RIIIS/J strain was developed as follows: in 1967 an RIII/AnJ female was bred with a SEC/1ReJ male and an F1 female from this cross was bred to an RIII/AnJ male. Then an F1 female from this second mating was bred to an RIII/J male and inbreeding followed. The strain was referred to as RIII/2J until 1979 when the name was corrected to RIIIS/J. Embryos for this strain were first cryopreserved in 1989-90 at generation F79.
|Allele Name||myxovirus susceptibility 1|
|Allele Synonym(s)||Mx1s1; myxovirus susceptibility 1|
|Gene Symbol and Name||Mx1, MX dynamin-like GTPase 1|
|Gene Synonym(s)||Mx; Mx-1; Mx; Mx-1; AI893580; myxovirus (influenza) resistance 1 polypeptide; expressed sequence AI893580; IFI-78K; MxA; MX; IFI78; MXB|
|Strain of Origin||multiple strains|
|General Note|| |
The Mx genes determine resistance to the lethal effects of various myxoviruses including neurotropic avian influenza A virus injected intracerebrally, pneumotropic strains injected intranasally, and a hepatotropic strain injected intraperitoneally (J:5645, J:13136). Resistance is not dependent on presence of the thymus and is not abolished by immunosuppression or by inhibitors of macrophage function (J:5735, J:5478, J:5645). Resistance is specific for the orthomyxoviruses (J:6265). It is dependent on the presence of interferon-alpha and -beta but not -gamma (J:7365).
The resistance allele at the Mx1 locus, under induction by alpha/beta interferon, produces the 75 kDa protein MX-1, which confers resistance to the influenza virus, in the nuclei of cells carrying the allele. Susceptibility alleles do not produce the protein (J:8273). The protein is located in the nucleus (J:7703) and produces its antiviral effect by preventing synthesis of viral mRNA in the nucleus (J:7992). Nuclear localization is necessary for anti-influenza virus activity (J:1417), but mutations induced in Mx1 showed that nuclear position was not sufficient for the effect; mutations in several domains can cause its loss (J:11840). The MX-1 protein is a GTPase containing a GTP binding domain (J:1417) and this binding core is also necessary (J:21243).
Resistance is expressed by macrophages and other cells in vitro (J:6649, J:5940) but could not be transferred to susceptible animals by transfer of macrophages from resistant mice (J:6149).
Resistance to infection with two tick-borne viruses, Thogoto virus (J:8273) and Dhori virus (J:27760), is also conferred by Mx1r.
The Mx1r allele occurs only in strains A2G, SL/NiA, and T9, the latter being a strain derived from an influenza-resistant wild stock, and CAST/Ei, derived from Mus musculus castaneus. Most inbred strains, including C57BL/6J, C3H/HeJ, and BALB/cJ, carry an influenza susceptible Mx1s1 allele which produces mRNA lacking exons 9, 10, and 11 of the Mx1r allele. This large deletion apparently renders the protein incapable of providing resistance to influenza. The CBA/J, CE/J, I/LnJ, and PERA/Ei strains, also susceptible to the virus, have another form of the Mx1s2 allele in which there is a nonsense mutation (J:9452).
Interferon is induced by viral infection and in turn induces the Mx protein (J:7703). Although some interferon-induced genes respond directly to virus invasion as well as indirectly through induction by virus-induced interferon, this primary response is very weak for the MX-1 protein in response to either influenza or Newcastle disease viruses (J:1892).
|Molecular Note||Many inbred mouse strains have an exon 9 to 11 deletion, resulting in a null allele and susceptibility to myxoviruses, including: A/J, ABP/Le, AKR/J, AU/SsJ, BALB/cJ, BDP/J, BUB/BnJ, C3H/HeJ, C57BL/6J, C57BL/10J, C57BL/KsJ, C57L/J, C58/J, DA/HuSn, DBA/2J, FSB/GnEi, FVB/NJ, LIS/A, LP/J, MA/MyJ, MAS/A, NZB/BINJ, P/J, PL/J, RIIIS/J, RF/J, SEA/GnJ, SEC1/ReJ, SJL/J, ST/bJ, TS1/A, TW1/A. YBR/Ei, 020/A, 129/J, SF/CamEi and SK/CamEi.|
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