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Expression data from mouse intestine: C57Bl/6 MTHFR+/- vs BALB/c MTHFR+/-

ABSTRACT: Previous studies in our laboratory have shown that low folate diet (control diet with 2mg folate/kg, low folate diet with 0.3mg folate/kg) can induce intestinal tumors in BALB/c mice. In addition, we reported that C57Bl/6J mice did not form tumors under the same conditions. We used microarrays to identify the genetic differences between BALB/c and C57Bl/6J mice that promote tumorigenesis in BALB/c mice. Two groups of mice will be used in the micro-array experiment. One group will consist of four BALB/c mice and the second group will consist of four C57Bl/6 mice. Both groups have mild MTHFR deficiency (Mthfr+/-) and will receive low folate diet (0.3 mg folate/kg) for one year. RNA samples will be extracted from duodenum, the first section of the small intestine where tumors were observed in BALB/c mice. Eight Affymetrix GeneChip Mouse Gene 1.0 ST Array Chips will be used in this experiment.

ORGANISM(S): Mus musculus

SUBMITTER: Daniel Leclerc 

PROVIDER: E-GEOD-34010 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Differential gene expression and methylation in the retinoid/PPARA pathway and of tumor suppressors may modify intestinal tumorigenesis induced by low folate in mice.

Leclerc Daniel D   Cao Yuanhang Y   Deng Liyuan L   Mikael Leonie G LG   Wu Qing Q   Rozen Rima R  

Molecular nutrition & food research 20120924 4

<h4>Scope</h4>Inadequate folate intake increases risk for colorectal cancer. We previously showed that low-folate diets induced intestinal tumors in BALB/c mice, but not in C57BL/6 mice. We suggested that DNA damage, altered methylation, and reduced apoptosis could contribute to tumorigenesis in this model.<h4>Methods and results</h4>To identify genes involved in tumorigenesis, we compared gene expression profiles in preneoplastic intestine of BALB/c and C57BL/6 mice-fed low folate. We identifie  ...[more]

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