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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

The tumor spectrum in FHIT-deficient mice.

Mice carrying one inactivated Fhit allele (Fhit +/- mice) are highly susceptible to tumor induction by N-nitrosomethylbenzylamine, with 100% of Fhit +/- mice exhibiting tumors of the forestomach/squamocolumnar junction vs. 25% of Fhit +/+ controls. In the current study a single N-nitrosomethylbenzylamine dose was administered to Fhit +/+, +/-, and -/- mice to compare carcinogen susceptibility in +/- and -/- Fhit-deficient mice. At 29 weeks after treatment, 7.7% of wild-type mice had tumors. Of the Fhit -/- mice 89.5% exhibited tumors (average 3.3 tumors/mouse) of the forestomach and squamocolumnar junction; half of the -/- mice had medium (2 mm diameter) to large (>2 mm) tumors. Of the Fhit +/- mice 78% exhibited tumors (average 2.4 tumors/mouse) and 22% showed medium to large tumors. Untreated Fhit-deficient mice have been observed for up to 2 years for spontaneous tumors. Fhit +/- mice (average age 21 mo) exhibit an average of 0.94 tumors of different types; Fhit -/- mice (average age 16 mo) also showed an array of tumors (average 0.76 tumor/mouse). The similar spontaneous and induced tumor spectra observed in mice with one or both Fhit alleles inactivated suggests that Fhit may be a one-hit tumor suppressor gene in some tissues.[1]

References

  1. The tumor spectrum in FHIT-deficient mice. Zanesi, N., Fidanza, V., Fong, L.Y., Mancini, R., Druck, T., Valtieri, M., Rüdiger, T., McCue, P.A., Croce, C.M., Huebner, K. Proc. Natl. Acad. Sci. U.S.A. (2001) [Pubmed]
 
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