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Senescence-Accelerated Mouse (SAM) Strains Have a Spontaneous Mutation in the Abcb1a Gene

机译:衰老加速小鼠(SAM)菌株Abcb1a基因自发突变。

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Senescence-Accelerated Mouse (SAM) strains are used as animal models for gerontological research. Here, we report that the SAMR1 strain, which shows a high sensitivity to toxicity of the parasiticide ivermectin, has a spontaneous retroviral insertional mutation in the ATP-binding cassette, sub-family B (MDR/TAP), member 1A (Abcb1a) gene. This mutation is identical to that found in Cr/:CF1-Abcb1a mice, which are also highly sensitive to ivermectin due to the mutation. The mutant Abcb1a allele was found in SAMR4, SAMR5, SAMP1, SAMP6, SAMP7, and SAMP9, but not in SAMP3, SAMP8, SAMP10, SAMP11, and other outbred and inbred strains, including 129/SvJ strains. These results impart both caution and promise in the use of SAM strains in studies of biological processes in which P-glycoprotein participates.
机译:衰老加速小鼠(SAM)菌株被用作老年医学研究的动物模型。在这里,我们报告说,SAMR1菌株,对寄生虫伊维菌素的毒性表现出高度敏感性,在ATP结合盒,亚家族B(MDR / TAP),成员1A(Abcb1a)基因中具有自发的逆转录病毒插入突变。这种突变与Cr /:CF1-Abcb1a小鼠中发现的突变相同,由于这种突变,它们对伊维菌素也高度敏感。在SAMR4,SAMR5,SAMP1,SAMP6,SAMP7和SAMP9中发现了突变的Abcb1a等位基因,但在SAMP3,SAMP8,SAMP10,SAMP11和其他近交和近交菌株(包括129 / SvJ菌株)中均未发现。这些结果在使用SAM菌株进行P-糖蛋白参与的生物学过程研究中既谨慎又有希望。

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