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- W2008508879 abstract "Interactions between tumor cells and the microenvironment are crucial to tumor formation and metastasis. The central nervous system serves as a “sanctuary” site for metastasis, resulting in poor prognosis in diagnosed patients. The incidence of brain metastasis is increasing; however, little is known about interactions between the brain and metastatic cells. Brain pathology was examined in an experimental model system of brain metastasis, using a subline of MDA-MB-231 human breast cancer cells. The results were compared with an analysis of sixteen resected human brain metastases of breast cancer. Experimental metastases formed preferentially in specific brain regions, with a distribution similar to clinical cases. In both the 231-BR model, and in human specimens, Ki67 expression indicated that metastases were highly proliferative (~50%). Little apoptosis was observed in either set of tumors. In the model system, metastases elicited a brain inflammatory response, with extensive reactive gliosis surrounding metastases. Similarly, large numbers of glial cells were found within the inner tumor mass of human brain metastases. In vitro co-cultures demonstrated that glia induced a ~5-fold increase in metastatic cell proliferation (P < 0.001), suggesting that brain tissue secretes factors conducive to tumor cell growth. Molecules used to signal between tumor cells and the surrounding glia could provide a new avenue of therapeutic targets for brain metastases." @default.
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- W2008508879 date "2008-07-23" @default.
- W2008508879 modified "2023-10-02" @default.
- W2008508879 title "Reactive glia are recruited by highly proliferative brain metastases of breast cancer and promote tumor cell colonization" @default.
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- W2008508879 doi "https://doi.org/10.1007/s10585-008-9193-z" @default.
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