Differential characteristics of two new tumorigenic cell lines of human breast carcinoma origin

• Published in: International journal of cancer 1998-07, Vol.77 (3), p.415-423
• Main Authors: 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.
• Format: Article
• Language: English
• Subjects: Aged; Aged, 80 and over; Animals; Biological and medical sciences; Breast - pathology; Breast Neoplasms - genetics; Breast Neoplasms - pathology; Breast Neoplasms - ultrastructure; Carcinoma, Ductal, Breast - genetics; Carcinoma, Ductal, Breast - pathology; Carcinoma, Ductal, Breast - ultrastructure; Carcinoma, Medullary - genetics; Carcinoma, Medullary - pathology; Carcinoma, Medullary - ultrastructure; Cell Division; Cell Line; Epithelial Cells - pathology; Female; General aspects (metabolism, cell proliferation, established cell line...); Humans; Immunohistochemistry; Interleukin-6 - analysis; Interleukin-6 - biosynthesis; Intermediate Filament Proteins - analysis; Intermediate Filament Proteins - biosynthesis; Keratins - analysis; Keratins - biosynthesis; Medical sciences; Mice; Mice, Nude; Platelet-Derived Growth Factor - analysis; Platelet-Derived Growth Factor - biosynthesis; Receptors, Estrogen - analysis; Receptors, Progesterone - analysis; Transforming Growth Factor beta - analysis; Transforming Growth Factor beta - biosynthesis; Transplantation, Heterologous; Tumor cell; Tumor Cells, Cultured; Tumors
• ISSN: 0020-7136; 1097-0215
• DOI: 10.1002/(SICI)1097-0215(19980729)77:3<415::AID-IJC18>3.0.CO;2-6

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 × 107 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.