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Sarcoma
Volume 2012, Article ID 148614, 9 pages
http://dx.doi.org/10.1155/2012/148614
Research Article

Characterization of Liposarcoma Cell Lines for Preclinical and Biological Studies

1Cancer Stem Cell Innovation Centre and Department of Tumor Biology, Institute of Cancer Research, Oslo University Hospital, The Norwegian Radium Hospital, P.O. Box 4953, Nydalen, 0424 Oslo, Norway
2Department of Molecular Bioscience, University of Oslo, P.O. Box 1041, Blindern, 0316 Oslo, Norway

Received 16 April 2012; Accepted 24 May 2012

Academic Editor: R. Pollock

Copyright © 2012 Eva W. Stratford et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Liposarcoma cell lines represent in vitro models for studying disease mechanisms at the cellular level and for preclinical evaluation of novel drugs. To date there are a limited number of well-characterized models available. In this study, nine immortal liposarcoma cell lines were evaluated for tumor-forming ability, stem cell- and differentiation potential, and metastatic potential, with the aim to generate a well-characterized liposarcoma cell line panel. Detailed stem cell and differentiation marker analyses were also performed. Five of the liposarcoma cell lines were tumorigenic, forming tumors in mice. Interestingly, tumor-forming ability correlated with high proliferative capacity in vitro. All the cell lines underwent adipocytic differentiation, but the degree varied. Surprisingly, the expression of stem cell and differentiation markers did not correlate well with function. Overall, the panel contains cell lines suited for in vivo analyses (LPS141, SA-4, T778, SW872, and LISA-2), for testing novel drugs targeting cancer stem cells (LPS141) and for studying tumor progression and metastasis (T449 and T778).