RT Journal Article SR Electronic T1 The practicalities of using tissue slices as preclinical organotypic breast cancer models JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 253 OP 255 DO 10.1136/jclinpath-2012-201147 VO 66 IS 3 A1 Holliday, Deborah L A1 Moss, Marcus A A1 Pollock, Steven A1 Lane, Sally A1 Shaaban, Abeer M A1 Millican-Slater, Rebecca A1 Nash, Claire A1 Hanby, Andrew M A1 Speirs, Valerie YR 2013 UL http://jcp.bmj.com/content/66/3/253.abstract AB Models considering breast cancer complexity cannot be easily or accurately replicated in routine cell line or animal models. We aimed to evaluate the practicality of organotypic tissue slice culture in breast cancer. Following ethical approval, 250 µm thick sections from surplus breast tumours (n=10) were prepared using a vibrating blade microtome. Triplicate tissue slices were placed in 6-well plates and cultured for up to 7 days±tamoxifen (1 nM) or doxorubicin (1 µM). Tissue slices were fixed and embedded before sectioning for morphological evaluation and immunohistochemistry. H&E showed good preservation of tissue morphology. Collagen production was evident. Biomarkers of proliferation and apoptosis could be evaluated using immunohistochemistry and used as surrogates to quantify drug effects. In summary, breast cancer tissue slices can be cultured in vitro as organotypic models. Nevertheless, although simple in concept, the delicacy of the model with regard to handling makes subsequent analytical processes challenging.