Gene expression profiles of mouse brains

Inbred mouse strains have been shown to vary considerably in neurobehavioral testing. In the September 26 Proceedings of the National Academy of Science, Sandberg et al. describe the first use of DNA microarrays to determine the genetics events that might explain these phenotypic differences (Proc Natl Acad Sci USA 2000, 97:11038-11043). They compared two common inbred mouse strains (C57BL/6 and 129SvEv) by examining the expression profiles of over 10,000 genes in six different brain regions. Th

By | October 13, 2000

Inbred mouse strains have been shown to vary considerably in neurobehavioral testing. In the September 26 Proceedings of the National Academy of Science, Sandberg et al. describe the first use of DNA microarrays to determine the genetics events that might explain these phenotypic differences (Proc Natl Acad Sci USA 2000, 97:11038-11043). They compared two common inbred mouse strains (C57BL/6 and 129SvEv) by examining the expression profiles of over 10,000 genes in six different brain regions. They identified 24 genes that were differentially expressed in all brain regions of C57BL/6 animals compared with 129Sv/Ev. Furthermore, 1% of genes were differentially expressed in at least one brain region between the two strains. When comparing pentylenetetrazol-induced seizures, the immediate-early responses were similar but the overall transcriptional response was blunted in the 129SvEv strain. Sandberg et al. also found several genes that were enriched in one brain region, with the greatest differences in the cerebellum. This approach can be used to begin to unravel the mysteries of behavioral phenotypes, drug sensitivities and different brain functions.

Popular Now

  1. Running on Empty
    Features Running on Empty

    Regularly taking breaks from eating—for hours or days—can trigger changes both expected, such as in metabolic dynamics and inflammation, and surprising, as in immune system function and cancer progression.

  2. Gut Feeling
    Daily News Gut Feeling

    Sensory cells of the mouse intestine let the brain know if certain compounds are present by speaking directly to gut neurons via serotonin.

  3. Athletes’ Microbiomes Differ from Nonathletes
  4. Government Nixes Teaching Evolution in Turkish Schools
AAAS