Characterization of hybrid cells derived from spontaneous fusion events between breast epithelial cells exhibiting stem-like characteristics and breast cancer cells.
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Characterization of hybrid cells derived from spontaneous fusion events between breast epithelial cells exhibiting stem-like characteristics and breast cancer cells. / Dittmar, Thomas; Schwitalla, Sarah; Seidel, Jeanette; Haverkampf, Sonja; Reith, Georg; Meyer-Staeckling, Sönke; Brandt, Burkhard; Niggemann, Bernd; Zänker, Kurt S.
In: CLIN EXP METASTAS, Vol. 28, No. 1, 1, 2011, p. 75-90.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Characterization of hybrid cells derived from spontaneous fusion events between breast epithelial cells exhibiting stem-like characteristics and breast cancer cells.
AU - Dittmar, Thomas
AU - Schwitalla, Sarah
AU - Seidel, Jeanette
AU - Haverkampf, Sonja
AU - Reith, Georg
AU - Meyer-Staeckling, Sönke
AU - Brandt, Burkhard
AU - Niggemann, Bernd
AU - Zänker, Kurt S
PY - 2011
Y1 - 2011
N2 - Several data of the past years clearly indicated that the fusion of tumor cells and tumor cells or tumor cells and normal cells can give rise to hybrids cells exhibited novel properties such as an increased malignancy, drug resistance, or resistance to apoptosis. In the present study we characterized hybrid cells derived from spontaneous fusion events between the breast epithelial cell line M13SV1-EGFP-Neo and two breast cancer cell lines: HS578T-Hyg and MDA-MB-435-Hyg. Short-tandem-repeat analysis revealed an overlap of parental alleles in all hybrid cells indicating that hybrid cells originated from real cell fusion events. RealTime-PCR-array gene expression data provided evidence that each hybrid cell clone exhibited a unique gene expression pattern, resulting in a specific resistance of hybrid clones towards chemotherapeutic drugs, such as doxorubicin and paclitaxel, as well as a specific migratory behavior of hybrid clones towards EGF. For instance, M13MDA435-4 hybrids showed a marked resistance towards etoposide, doxorubicin and paclitaxel, whereas hybrid clones M13MDA-435-1 and -2 were only resistant towards etoposide. Likewise, all investigated M13MDA435 hybrids responded to EGF with an increased migratory activity, whereas the migration of parental MDA-MB-435-Hyg cells was blocked by EGF, suggesting that M13MDA435 hybrids may have acquired a new motility pathway. Similar findings have been obtained for M13HS hybrids. We conclude from our data that they further support the hypothesis that cell fusion could give rise to drug resistant and migratory active tumor (hybrid) cells in cancer.
AB - Several data of the past years clearly indicated that the fusion of tumor cells and tumor cells or tumor cells and normal cells can give rise to hybrids cells exhibited novel properties such as an increased malignancy, drug resistance, or resistance to apoptosis. In the present study we characterized hybrid cells derived from spontaneous fusion events between the breast epithelial cell line M13SV1-EGFP-Neo and two breast cancer cell lines: HS578T-Hyg and MDA-MB-435-Hyg. Short-tandem-repeat analysis revealed an overlap of parental alleles in all hybrid cells indicating that hybrid cells originated from real cell fusion events. RealTime-PCR-array gene expression data provided evidence that each hybrid cell clone exhibited a unique gene expression pattern, resulting in a specific resistance of hybrid clones towards chemotherapeutic drugs, such as doxorubicin and paclitaxel, as well as a specific migratory behavior of hybrid clones towards EGF. For instance, M13MDA435-4 hybrids showed a marked resistance towards etoposide, doxorubicin and paclitaxel, whereas hybrid clones M13MDA-435-1 and -2 were only resistant towards etoposide. Likewise, all investigated M13MDA435 hybrids responded to EGF with an increased migratory activity, whereas the migration of parental MDA-MB-435-Hyg cells was blocked by EGF, suggesting that M13MDA435 hybrids may have acquired a new motility pathway. Similar findings have been obtained for M13HS hybrids. We conclude from our data that they further support the hypothesis that cell fusion could give rise to drug resistant and migratory active tumor (hybrid) cells in cancer.
M3 - SCORING: Journal article
VL - 28
SP - 75
EP - 90
JO - CLIN EXP METASTAS
JF - CLIN EXP METASTAS
SN - 0262-0898
IS - 1
M1 - 1
ER -