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Differential characteristics of two new tumorigenic cell lines of human breast carcinoma origin
Author(s) -
Möbus V. J.,
Moll R.,
Gerharz C. D.,
Kieback D. G.,
Merk O.,
Runnebaum I. B.,
Linner S.,
Dreher L.,
Grill H.J.,
Kreienberg R.
Publication year - 1998
Publication title -
international journal of cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.475
H-Index - 234
eISSN - 1097-0215
pISSN - 0020-7136
DOI - 10.1002/(sici)1097-0215(19980729)77:3<415::aid-ijc18>3.0.co;2-6
Subject(s) - cell culture , biology , cytokeratin , cancer research , pathology , medicine , immunohistochemistry , immunology , genetics
Permanent human tumor cell lines are an important tool for the study of breast cancer. Two new breast cancer cell lines (BrCa‐MZ‐01 and BrCa‐MZ‐02) were isolated from a solid tumor and a pleural effusion, respectively. One cell line was established from a medullary carcinoma, the other from a ductal carcinoma. These cells exhibit ultrastructural and immunohistochemical features of epithelial cells of mammary origin. Intermediate filament and cytokeratin typing showed a clear predominance of the simple‐epithelial cytokeratins CK 8, CK 18 and CK 19, although the expression was reduced in comparison to the hormone receptor‐positive reference cell lines MCF‐7 and ZR‐75‐1. Both cell lines produced slow‐growing tumors after subcutaneous (s.c.) transplantation of 1 × 10 7 viable tumor cells into nude mice. The cell line BrCa‐MZ‐01 expresses the estrogen and progesterone receptor, whereas the cell line BrCa‐MZ‐02 remains negative. Both cell lines are positive for secretion of platelet‐derived growth factor (PDGF) and transforming growth factor‐β (TGF‐β), whereas interleukin‐6 (IL‐6) is only secreted by the cell line BrCa‐MZ‐02. Int. J. Cancer 77:415–423, 1998. © 1998 Wiley‐Liss, Inc.