DESCRIPTION:

QTL Associated with Mammary tumor resistance. On Chromosome 18 with a LOD score= , p-value =. From a(n) of

LABEL:

QTL-Mamtr6-Rat-Chr 18

SCORE TYPE:

Binary

DATE ADDED:

2015-06-10

DATE UPDATED:

2024-10-22

SPECIES:

AUTHORS:

Stieber D, Piessevaux G, Rivière M, Laes JF, Quan X, Szpirer J, Szpirer C

TITLE:

Isolation of two regions on rat chromosomes 5 and 18 affecting mammary cancer susceptibility.

JOURNAL:

International journal of cancer. Journal international du cancer None None, Vol 120, pp. 1678-83

ABSTRACT:

1. Int J Cancer. 2007 Apr 15;120(8):1678-83. Isolation of two regions on rat chromosomes 5 and 18 affecting mammary cancer susceptibility. Stieber D(1), Piessevaux G, Rivière M, Laes JF, Quan X, Szpirer J, Szpirer C. Author information: (1)Université Libre de Bruxelles, Institut de Biologie et de Médecine Moléculaires, Rue Profs Jeener & Brachet, 12, B-6041 Gosselies (Charleroi), Belgium. We previously mapped several quantitative trait loci (QTLs) controlling DMBA-induced mammary tumor development in female rats derived from a SPRD-Cu3 (susceptible strain) x WKY (resistant strain) cross. Two of these QTLs were assigned to chromosomes 5 and 18. In the present study, we generated and characterized congenic strains in which a segment of WKY chromosomes 5 or 18 was introduced in the SPRD-Cu3 genetic background, thereby physically demonstrating that each of these two chromosomes controls mammary tumor multiplicity. The chromosome 5 QTL (Mcstm1) accounts for 7 tumors per animal (versus a total of 11 tumors per SPRD-Cu3 rat). The chromosome 18 QTL (Mcstm2) accounts for 3 tumors per animal and is the first chemically-induced mammary cancer susceptibility locus assigned to this chromosome. In addition, the Mcstm1 region was shown to also controls tumor latency. These loci thus play a major role in chemically-induced mammary tumor development. QTLs controlling chemically-induced or estrogen-induced mammary tumor development have independently been identified on chromosomes 5 and 18, using susceptible strains others than SPRD-Cu3. Therefore the haplotype structure of the relevant chromosome regions was analyzed in the different strains. Some chromosome regions were found to be highly mosaic (haplotype blocks < 1 Mb), while one region showed an apparently conserved haplotype block of 7.5 Mb. This analysis points to limited regions that could harbor the causative genes and also indicates that at least Mcstm2 is a novel QTL. (c) 2007 Wiley-Liss, Inc. PMID: 17230524 [PubMed - indexed for MEDLINE] PUBMED: 17230524
Find other GeneSets from this publication