PMID- 28074628 OWN - NLM STAT- MEDLINE DCOM- 20180723 LR - 20180723 IS - 1476-5829 (Electronic) IS - 1476-5810 (Linking) VI - 15 IP - 4 DP - 2017 Dec TI - S100A4 (metastasin) positive mesenchymal canine mammary tumour spheroids reduce Tenascin C synthesis under DMSO exposure in vitro. PG - 1428-1444 LID - 10.1111/vco.12287 [doi] AB - In breast cancer research S100A4-positive tumour-associated stromal cells are assumed as primary source of Tenascin C (TNC) in the metastatic environment. Aim of the present study was to isolate and characterize S100A4/TNC positive stromal canine mammary tumour (CMT) cells. Cells grown as scaffold-free spheroids were investigated for S100A4, TNC, and proliferative activity under 1.8% DMSO stimulation by means of Western blot and immunohistochemistry. DMSO is a commonly used drug solvent despite well-known side effects on cells including TNC expression. DMSO did not affect proliferation, but TNC was significantly reduced under DMSO exposure for 7 and 14 days, whereby for S100A4 a reducing effect was only observed after 14 days. Without DMSO, cells stably expressed TNC and S100A4 which makes them suitable to be used in experimental approaches requiring S100A4/TNC expressing CMT stromal cells. Results show that 1.8% DMSO should not be used as solvent for experiments concerning TNC/S100A4 expression. CI - (c) 2017 John Wiley & Sons Ltd. FAU - Kau, S AU - Kau S AD - Institute of Anatomy, Histology and Embryology, Department of Pathobiology, University of Veterinary Medicine, Vienna, Austria. FAU - Miller, I AU - Miller I AD - Institute for Medical Biochemistry, Department for Biomedical Sciences, University of Veterinary Medicine, Vienna, Austria. FAU - Tichy, A AU - Tichy A AD - Platform Biostatistics, Department of Biomedical Science, Institute of Population Genetics, University of Veterinary Medicine, Vienna, Austria. FAU - Gabriel, C AU - Gabriel C AD - Institute of Anatomy, Histology and Embryology, Department of Pathobiology, University of Veterinary Medicine, Vienna, Austria. LA - eng PT - Journal Article DEP - 20170111 PL - England TA - Vet Comp Oncol JT - Veterinary and comparative oncology JID - 101185242 RN - 0 (S100 Calcium-Binding Protein A4) RN - 0 (Tenascin) RN - YOW8V9698H (Dimethyl Sulfoxide) SB - IM MH - Animals MH - Blotting, Western/veterinary MH - Dimethyl Sulfoxide/*pharmacology MH - Dog Diseases/*metabolism MH - Dogs MH - Female MH - Mammary Neoplasms, Animal/*metabolism MH - S100 Calcium-Binding Protein A4/*metabolism MH - Spheroids, Cellular/drug effects/metabolism MH - Tenascin/*metabolism MH - Tumor Cells, Cultured/drug effects/metabolism OTO - NOTNLM OT - DMSO OT - S100A4 OT - TNC OT - canine mammary tumour OT - tumour stroma EDAT- 2017/01/12 06:00 MHDA- 2018/07/24 06:00 CRDT- 2017/01/12 06:00 PHST- 2016/05/17 00:00 [received] PHST- 2016/09/21 00:00 [revised] PHST- 2016/10/16 00:00 [accepted] PHST- 2017/01/12 06:00 [pubmed] PHST- 2018/07/24 06:00 [medline] PHST- 2017/01/12 06:00 [entrez] AID - 10.1111/vco.12287 [doi] PST - ppublish SO - Vet Comp Oncol. 2017 Dec;15(4):1428-1444. doi: 10.1111/vco.12287. Epub 2017 Jan 11.