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Fujiike AY, de Oliveira LCB, Ribeiro DL, Pereira ÉR, Okuyama NCM, Dos Santos AGP, de Syllos Cólus IM, Serpeloni JM. Effects of docetaxel on metastatic prostate (DU-145) carcinoma cells cultured as 2D monolayers and 3D multicellular tumor spheroids. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2024; 87:227-244. [PMID: 38095149 DOI: 10.1080/15287394.2023.2293218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Docetaxel (DTX) is one of the chemotherapeutic drugs indicated as a first-line treatment against metastatic prostate cancer (mPCa). This study aimed to compare the impact of DTX on mPCa (DU-145) tumor cells cultured as 2D monolayers and 3D multicellular tumor spheroids (MCTS) in vitro. The cells were treated with DTX (1-96 µM) at 24, 48, or 72 hr in cell viability assays (resazurin, phosphatase acid, and lactate dehydrogenase). Cell death was assessed with fluorescent markers and proliferation by clonogenic assay (2D) and morphology, volume, and integrity assay (3D). The cell invasion was determined using transwell (2D) and extracellular matrix (ECM) (3D). Results showed that DTX decreased cell viability in both culture models. In 2D, the IC50 (72 hr) values were 11.06 μM and 14.23 μM for resazurin and phosphatase assays, respectively. In MCTS, the IC50 values for the same assays were 114.9 μM and 163.7 μM, approximately 10-fold higher than in the 2D model. The % of viable cells decreased, while the apoptotic cell number was elevated compared to the control in 2D. In 3D spheroids, only DTX 24 μM induced apoptosis. DTX (≥24 μM at 216 hr) lowered the volume, and DTX 96 μM completely disintegrated the MCTS. DTX reduced the invasion of mPCa cells to matrigel (2D) and migration from MCTS to the ECM. Data demonstrated significant differences in drug response between 2D and 3D cell culture models using mPCa DU-145 tumor cells. MCTS resembles the early stages of solid tumors in vivo and needs to be considered in conjunction with 2D cultures when searching for new therapeutic targets.
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Affiliation(s)
- Andressa Yuri Fujiike
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, PR, Brazil
| | - Larissa Cristina Bastos de Oliveira
- Division of Cancer Biology and Genetics, Cancer Research Institute, and Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada
| | - Diego Luis Ribeiro
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo (ICB/USP), São Paulo, Brazil
| | - Érica Romão Pereira
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, PR, Brazil
| | - Nádia Calvo Martins Okuyama
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, PR, Brazil
| | | | - Ilce Mara de Syllos Cólus
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, PR, Brazil
| | - Juliana Mara Serpeloni
- Department of General Biology, Center of Biological Sciences, State University of Londrina (UEL), Londrina, PR, Brazil
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