RGD Reference Report - Identification of novel carcinogen-mediated mammary tumor susceptibility loci in the rat using the chromosome substitution technique. - Rat Genome Database

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Identification of novel carcinogen-mediated mammary tumor susceptibility loci in the rat using the chromosome substitution technique.

Authors: Adamovic, T  McAllister, D  Wang, T  Adamovic, D  Rowe, JJ  Moreno, C  Lazar, J  Jacob, HJ  Sugg, SL 
Citation: Adamovic T, et al., Genes Chromosomes Cancer. 2010 Nov;49(11):1035-45.
RGD ID: 4143380
Pubmed: PMID:20737482   (View Abstract at PubMed)
PMCID: PMC2943010   (View Article at PubMed Central)
DOI: DOI:10.1002/gcc.20812   (Journal Full-text)

We here report the genetic basis for susceptibility and resistance to carcinogen-mediated [7,12-dimethylbenz[a]anthracene (DMBA)] mammary tumorigenesis using the full panel of SS/BN consomic rat strains, in which substitutions of individual chromosomes from the resistant BN strain onto the genomic background of the susceptible SS strain were made. Analysis of 252 consomic females identified rat mammary Quantitative Trait Loci (QTLs) affecting tumor incidence on chromosomes 3 and 5, latency on chromosomes 3, 9, 14, and 19, and multiplicity on chromosomes 13, 16, and 19. In addition, we unexpectedly identified a novel QTL on chromosome 6 controlling a lethal toxic phenotype in response to DMBA. Upon further investigation with chromosomes 6 and 13 congenic lines, in which an additional 114 rats were investigated, we mapped (1) a novel mammary tumor QTL to a region of 27.1 Mbp in the distal part of RNO6, a region that is entirely separated from the toxicity phenotype, and (2) a novel and powerful mammary tumor susceptibility locus of 4.5 Mbp that mapped to the proximal q-arm of RNO13. Comparison of genetic strain differences using existing rat genome databases enabled us to further construct priority lists containing single breast cancer candidate genes within the defined QTLs, serving as potential functional variants for future testing. (c) 2010 Wiley-Liss, Inc.



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Strains with Phenominer Data Strains with phenominer dataStrains with phenominer data
SS/JrHsdMcwi SS-Chr 13BN/Mcwi SS-Chr 16BN/Mcwi
SS-Chr 19BN/Mcwi SS.BN-(D13Hmgc64-RN34_13048990782)/Mcwi SS.BN-(D6Rat149-D6Arb3)/Mcwi
SS-Chr 3BN/Mcwi SS-Chr 9BN/Mcwi SS-Chr 14BN/Mcwi
SS-Chr 5BN/Mcwi SS-Chr 6BN/Mcwi SS.BN-(D6Rat149-D6Rat18)/Mcwi
SS.BN-(D6Rat149-D6Got171)/Mcwi

Objects Annotated

QTLs
Mcs25  (Mammary carcinoma susceptibility QTL 25)
Mcs26  (Mammary carcinoma susceptibility QTL 26)
Mcs27  (Mammary carcinoma susceptibility QTL 27)

Objects referenced in this article
Strain SS-Chr 12BN/Mcwi null Rattus norvegicus
Strain SS.BN-(D13Rat111-D13Got22)/Mcwi null Rattus norvegicus
Strain SS.BN-(D13Rat151-D13Rat197)/Mcwi null Rattus norvegicus
Strain SS.BN-(D13Rat7-D13Rat60)/Mcwi null Rattus norvegicus

Additional Information