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Mallini P, Chen M, Mahkamova K, Lennard TWJ, Pan Y, Wei D, Stemke-Hale K, Kirby JA, Lash GE, Meeson A. Hypoxia-Driven TGFβ Modulation of Side Population Cells in Breast Cancer: The Potential Role of ERα. Cancers (Basel) 2023; 15:1108. [PMID: 36831452 PMCID: PMC9954173 DOI: 10.3390/cancers15041108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/31/2023] [Accepted: 02/06/2023] [Indexed: 02/12/2023] Open
Abstract
Epithelial-to-mesenchymal transition (EMT) is known to be important in regulating the behaviour of cancer cells enabling them to acquire stem cell characteristics or by enhancing the stem cell characteristics of cancer stem cells, resulting in these cells becoming more migratory and invasive. EMT can be driven by a number of mechanisms, including the TGF-β1 signalling pathway and/or by hypoxia. However, these drivers of EMT differ in their actions in regulating side population (SP) cell behaviour, even within SPs isolated from the same tissue. In this study we examined CoCl2 exposure and TGF-β driven EMT on SP cells of the MDA-MB-231 and MCF7 breast cancer cell lines. Both TGF-β1 and CoCl2 treatment led to the depletion of MDA-MB-231 SP. Whilst TGF-β1 treatment significantly reduced the MCF7 SP cells, CoCl2 exposure led to a significant increase. Single cell analysis revealed that CoCl2 exposure of MCF7 SP leads to increased expression of ABCG2 and HES1, both associated with multi-drug resistance. We also examined the mammosphere forming efficiency in response to CoCl2 exposure in these cell lines, and saw the same effect as seen with the SP cells. We suggest that these contrasting effects are due to ERα expression and the inversely correlated expression of TGFB-RII, which is almost absent in the MCF7 cells. Understanding the EMT-mediated mechanisms of the regulation of SP cells could enable the identification of new therapeutic targets in breast cancer.
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Affiliation(s)
- Paraskevi Mallini
- Biosciences Institute, International Centre for Life, Newcastle University, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK
| | - Miaojuan Chen
- Guangzhou Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Medical University, Jinsui Road, Tianhe, Guangzhou 510623, China
| | - Kamilla Mahkamova
- Biosciences Institute, International Centre for Life, Newcastle University, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK
| | - Thomas W. J. Lennard
- Northern Institute for Cancer Research, Newcastle University, 3rd Floor William Leech Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Yue Pan
- Guangzhou Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Medical University, Jinsui Road, Tianhe, Guangzhou 510623, China
| | - Dan Wei
- Guangzhou Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Medical University, Jinsui Road, Tianhe, Guangzhou 510623, China
| | - Katherine Stemke-Hale
- Department of Systems Biology, MD Anderson Cancer Center, University of Texas, Houston, TX 77030, USA
| | - John A. Kirby
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, 3rd Floor William Leech Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Gendie E. Lash
- Guangzhou Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Medical University, Jinsui Road, Tianhe, Guangzhou 510623, China
| | - Annette Meeson
- Biosciences Institute, International Centre for Life, Newcastle University, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK
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TGF-β, to target or not to target; to prevent thyroid cancer progression? Biochim Biophys Acta Rev Cancer 2022; 1877:188752. [PMID: 35728736 DOI: 10.1016/j.bbcan.2022.188752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 06/14/2022] [Accepted: 06/14/2022] [Indexed: 11/22/2022]
Abstract
Thyroid cancer (TC) is a common endocrine cancer with a rising incidence. Current treatment fails to eliminate aggressive thyroid tumours, prompting an investigation into the processes that cause disease progression. In this review, we provide insight into TGF-β driven epithelial to mesenchymal transition (EMT), summarizing the current literature surrounding thyroid carcinogenesis, and discuss the potential for therapeutic strategies targeting the TGF-β signalling pathway. Understanding the underlying mechanisms that regulate cancer stem cell (CSC) growth and TGF-β signalling may provide novel therapeutic approaches for highly resistant TCs.
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