biostudies-literatureGarre ESwedish Cancer SocietyVästra Götaland Regional CouncilSwedish Research CouncilVINNOVA2172https://www.ebi.ac.uk/biostudies/studies/S-EPMC9103124biostudies-literatureUnknown14(9)Breast cancer is a heterogeneous disease in terms of cellular and structural composition, and besides acquired aggressive properties in the cancer cell population, the surrounding tumor microenvironment can affect disease progression and clinical behaviours. To specifically decode the clinical relevance of the cancer promoting effects of individual tumor microenvironments, we performed a comprehensive test of 110 breast cancer samples using a recently established <i>in vivo</i>-like 3D cell culture platform based on patient-derived scaffolds (PDSs). Cell-free PDSs were recellularized with three breast cancer cell lines and adaptation to the different patient-based microenvironments was monitored by quantitative PCR. Substantial variability in gene expression between individual PDS culturesCancersBreast Cancer Patient-Derived Scaffolds Can Expose Unique Individual Cancer Progressing Properties of the Cancer Microenvironment Associated with Clinical Characteristics.PMC91031242020-0414196506596558019-030619-03172019-012732017-03737Landberg GGustafsson AStahlberg AGarre ELeiva MCHakansson JKovacs AfalseBreast Cancer Patient-Derived Scaffolds Can Expose Unique Individual Cancer Progressing Properties of the Cancer Microenvironment Associated with Clinical Characteristics.Breast cancer is a heterogeneous disease in terms of cellular and structural composition, and besides acquired aggressive properties in the cancer cell population, the surrounding tumor microenvironment can affect disease progression and clinical behaviours. To specifically decode the clinical relevance of the cancer promoting effects of individual tumor microenvironments, we performed a comprehensive test of 110 breast cancer samples using a recently established <i>in vivo</i>-like 3D cell culture platform based on patient-derived scaffolds (PDSs). Cell-free PDSs were recellularized with three breast cancer cell lines and adaptation to the different patient-based microenvironments was monitored by quantitative PCR. Substantial variability in gene expression between individual PDS cultures2022-01-01T00:00:00Z2022 Apr2025-04-18T17:07:19.758Z2025-02-19T00:56:51.857ZS-EPMC91031243556530110.3390/cancers14092172