Affiliation:
1. Australian Cancer Research Foundation Genetics Laboratory and Australian Phenomics Facility, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601 Australia;,
Abstract
The human and mouse genome sequences bring closer the goal of understanding how characteristics of adult mammalian physiology and pathology are encoded by DNA. Here we review the challenge of understanding how genes specify mammalian traits, with particular focus on the cells and behavior of the immune system. Summarized is the emerging experience, advantages, and limitations of using ethylnitrosourea (ENU) to modify the mouse genome and select informative variants by phenotypic screens, yielding two main conclusions. First, ENU-induced variation provides an eminently feasible route to understanding how the genome encodes important mammalian processes without any prior assumptions about genes, their chromosomal locations, or expression patterns. Second, ENU alleles match those arising by natural variation. By changing individual protein domains or splice products, these alleles reveal separate gene functions specified through protein combinations.
Cited by
40 articles.
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