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10 резултати
An imbalance in progenitor cell populations reflects tumour progression in breast cancer primary culture models.
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BACKGROUND
Many factors influence breast cancer progression, including the ability of progenitor cells to sustain or increase net tumour cell numbers. Our aim was to define whether alterations in putative progenitor populations could predict clinicopathological factors of prognostic importance for
Modulation of myoepithelial-associated alpha6beta4 integrin in a breast cancer cell line alters invasive potential.
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In normal breast, cell-stromal contact is mediated by myoepithelial cells which strongly express alpha2beta1, alpha3beta1, and alpha6beta4 integrins, while epithelial cells exhibit alpha2beta1 and alpha3beta1 integrins at cell-cell borders, but do not express alpha6beta4 integrin. Breast carcinomas
Correlation of CD44 expression with proliferative activity of normal human breast epithelial cells in culture.
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A number of studies have shown that certain variant isoforms of CD44 are overexpressed in human breast cancer, suggesting their use as indicators of the presence of malignant cells. We now show that CD44 isoform mRNA and protein expression is upregulated in normal human breast epithelial cells
Growth and differentiation of progenitor/stem cells derived from the human mammary gland.
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Estrogen is necessary for the full development of the mammary gland and it is also involved in breast cancer development. We set out to identify and characterise progenitor/stem cells in the human mammary gland and to explore the role of estrogen in their proliferation and differentiation. Three
[Aggressive diffuse lymphoma with malignant pleural effusion expressing c-erbB-2 (neu) oncogene products].
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An 83-year-old male was admitted with a right pleural effusion and generalized lymphadenopathy. Serum LDH level was elevated to 801 IU/L, and the pathological diagnosis from inguinal lymph node needle biopsy was malignant lymphoma (ML) of diffuse, large cell, non-cleaved type, according to the
Telomerase immortalization of human mammary epithelial cells derived from a BRCA2 mutation carrier.
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A novel human mammary epithelial cell line, HME348, was established from benign breast tissue from a 44-year-old germ-line BRCA2 mutation carrier with a history of stage 1 breast cancer. Mutation analysis showed that the patient had a known 6872del4 BRCA2 heterozygous mutation. The human mammary
Isolation and characterization of human mammary stem cells.
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Since stem cells are present throughout the lifetime of an organism, it is thought that they may accumulate mutations, eventually leading to cancer. In the breast, tumours are predominantly oestrogen and progesterone receptor-positive (ERalpha/PR+). We therefore studied the biology of
Ectoenzyme regulation by phenotypically distinct fibroblast sub-populations isolated from the human mammary gland.
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Inter- and intralobular mammary fibroblasts have been separated from normal human breast tissue and cultured to study the differential expression of ectoenzymes present within the stroma of the normal gland and associated with breast cancers. Specific ectoenzymes were identified by indirect
Identification of a distinct side population of cancer cells in the Cal-51 human breast carcinoma cell line.
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"Side population" (SP) cells, which pump out the fluorescent dye H33342 via the ABCG2 transporter, define a putative stem/progenitor cell population in the mammary gland. Breast cancer SP cells recently isolated from the MCF-7 cell line possess similar properties and may represent stem cell-like
Regulation of human breast epithelial stem cells.
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Breast epithelial stem cells are thought to be the primary targets in the aetiology of breast cancer. As breast cancers are predominantly oestrogen and progesterone receptor-positive (ERalpha/PR+), we investigated the biology of ERalpha/PR+ cells and their relationship to stem cells in normal human
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