Biological and genetic properties of the p53 null preneoplastic mammary epithelium.

Daniel Medina, Frances S. Kittrell, Anne Shepard, L. Clifton Stephens, Cheng Jiang, Junxuan Lu, D. Craig Allred, Maureen McCarthy, Robert L. Ullrich

Research output: Contribution to journalArticle

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Abstract

The absence of the tumor suppressor gene p53 confers an increased tumorigenic risk for mammary epithelial cells. In this report, we describe the biological and genetic properties of the p53 null preneoplastic mouse mammary epithelium in a p53 wild-type environment. Mammary epithelium from p53 null mice was transplanted serially into the cleared mammary fat pads of p53 wild-type BALB/c female to develop stable outgrowth lines. The outgrowth lines were transplanted for 10 generations. The outgrowths were ductal in morphology and progressed through ductal hyperplasia and ductal carcinoma in situ before invasive cancer. The preneoplastic outgrowth lines were immortal and exhibited activated telomerase activity. They are estrogen and progesterone receptor-positive, and aneuploid, and had various levels of tumorigenic potential. The biological and genetic properties of these lines are distinct from those found in most hyperplastic alveolar outgrowth lines, the form of mammary preneoplasia occurring in most traditional models of murine mammary tumorigenesis. These results indicate that the preneoplastic cell populations found in this genetically engineered model are similar in biological properties to a subset of precurser lesions found in human breast cancer and provide a unique model to identify secondary events critical for tumorigenicity and invasiveness.

Original languageEnglish (US)
Pages (from-to)881-883
Number of pages3
JournalThe FASEB journal : official publication of the Federation of American Societies for Experimental Biology
Volume16
Issue number8
StatePublished - 2002
Externally publishedYes

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Breast
Epithelium
Telomerase
Progesterone Receptors
Estrogen Receptors
Tumors
Genes
Fats
Cells
Carcinoma, Intraductal, Noninfiltrating
Aneuploidy
Tumor Suppressor Genes
Hyperplasia
Adipose Tissue
Carcinogenesis
Epithelial Cells
Breast Neoplasms
Population
Neoplasms

Cite this

Biological and genetic properties of the p53 null preneoplastic mammary epithelium. / Medina, Daniel; Kittrell, Frances S.; Shepard, Anne; Stephens, L. Clifton; Jiang, Cheng; Lu, Junxuan; Allred, D. Craig; McCarthy, Maureen; Ullrich, Robert L.

In: The FASEB journal : official publication of the Federation of American Societies for Experimental Biology, Vol. 16, No. 8, 2002, p. 881-883.

Research output: Contribution to journalArticle

Medina, D, Kittrell, FS, Shepard, A, Stephens, LC, Jiang, C, Lu, J, Allred, DC, McCarthy, M & Ullrich, RL 2002, 'Biological and genetic properties of the p53 null preneoplastic mammary epithelium.', The FASEB journal : official publication of the Federation of American Societies for Experimental Biology, vol. 16, no. 8, pp. 881-883.
Medina, Daniel ; Kittrell, Frances S. ; Shepard, Anne ; Stephens, L. Clifton ; Jiang, Cheng ; Lu, Junxuan ; Allred, D. Craig ; McCarthy, Maureen ; Ullrich, Robert L. / Biological and genetic properties of the p53 null preneoplastic mammary epithelium. In: The FASEB journal : official publication of the Federation of American Societies for Experimental Biology. 2002 ; Vol. 16, No. 8. pp. 881-883.
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