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- W2034331406 abstract "Malignant melanoma has the highest propensity to metastasize to the brain of all primary neoplasms in adults. Here, we describe invasive growth and the development of melanoma metastases from suspensions of human melanoma cells in the brain of the chick embryo. Patient-derived melanoma cells and established melanoma cell lines were injected into the rhombencephalic brain vesicle of the two-day-chick embryo. After 48 and 96 h, tumor formation was studied in serial paraffin sections with melanoma-specific HMB45 and human-specific MIB1 proliferation markers. The majority of the cells injected into the embryonic liquor cavity perished. Only melanoma cells in newly formed aggregates or when attached to the dorsal roof plate escaped apoptosis. Local invasion occurred not in the ventral differentiating neural epithelium but only in the roof plate. Although after 48 h melanoma cells invaded the rhombencephalic roof plate profusely at both sides, after 96 h typically one large tumor developed in the midline between roof plate and the dorsal surface epithelium. From the tumor, single cells invaded the mesenchyme and blood vessels. Cell lines with different invasive properties retained their graded invasive behaviour. Maximally invasive cells formed continuous tracks via vessels and along nerve fibres. The central tumor in the roof plate of the chick embryo rhombencephalon resembles a metastatic nodule in the patients with melanoma. Penetration of the roof plate epithelium, tumor formation and invasion of surrounding tissues by single cells can reliably be reproduced. The chick embryo model can be used for molecular studies of early phases of melanoma brain metastasis." @default.
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- W2034331406 date "2012-11-22" @default.
- W2034331406 modified "2023-10-14" @default.
- W2034331406 title "Human melanoma cells in the rhombencephalon of the chick embryo: a novel model for brain metastasis" @default.
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- W2034331406 doi "https://doi.org/10.1111/exd.12041" @default.
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