If knocking-out of gene A induces a LOF phenotype in a certain mouse strain and adding back A rescues that LOF phenotype, we argue that gene A is involved in generating this phenotype. However, if there are no LOF phenotype when gene A is similarly knocked out in other mice strains, it is very possible that there are additional molecular events involved in this phenotype generation.
i*d
11 楼
co ask
【在 l****u 的大作中提到】 : 你当时搞啥了?
t*3
12 楼
差几集没看完呢。这不是剧情片,但故事说的过去。有喜剧情节也看起来不闷。
q*x
13 楼
赞!顶!
c*t
14 楼
Thanks for the reply. How to rescue the LOF phenotype in the knockout mice?
you can create a transgene that overexpresses the gene A which you are interested, integrate this transgene into your konck-out mice by conventional techniques, and examine whether this transgene rescues the LOF phenotype. BTW, nearly all of the publications don't have this rescue assay, hinting rescue is an unnecessary experiment.
【在 c*t 的大作中提到】 : Thanks for the reply. : How to rescue the LOF phenotype in the knockout mice?
there are some literatures using the strategy you described to solidify the claim of geno-pheno correlation. it's not so usual in mouse genetics field simply because of technical challenging - you need years to generate a KO line, and another year or so to generate transgene, another year to breed mice ... so reviewers usually would not demand this kind of rescue exp.
rescue is an unnecessary experiment.
【在 a***e 的大作中提到】 : you can create a transgene that overexpresses the gene A which you are : interested, integrate this transgene into your konck-out mice by : conventional techniques, and examine whether this transgene rescues the : LOF phenotype. : BTW, nearly all of the publications don't have this rescue assay, hinting rescue is an unnecessary experiment.
An alternative way examining the genotype-phenotype relationship is to test whether several independent animal strains harbor different mutations in the same gene and elicit similar phenotypes.