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Iio K, Hanna H, Beykou M, Gale C, Herberg JA. Role of procalcitonin in predicting complications of Kawasaki disease. Arch Dis Child 2023; 108:862-864. [PMID: 37524408 DOI: 10.1136/archdischild-2023-325787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 07/18/2023] [Indexed: 08/02/2023]
Affiliation(s)
- Kazuki Iio
- Applied Paediatrics MSc course, Imperial College London, London, UK
- Division of Pediatric Emergency Medicine, Tokyo Metropolitan Children's Medical Center, Fuchu, Tokyo, Japan
| | - Heather Hanna
- Section of Paediatric Infectious Disease, Imperial College London, London, UK
| | - Melina Beykou
- Circuits and Systems Group, Centre of Bio-Inspired Technology, Department of Electrical and Electronic Engineering, Imperial College London, London, UK
- Dynamical Cell Systems Group, Division of Cancer Biology, Institute of Cancer Research, London, UK
- Cancer Research UK Convergence Science Centre, London, UK
| | - Chris Gale
- Neonatal Medicine, School of Public Health, Faculty of Medicine, Imperial College London, London, UK
| | - Jethro Adam Herberg
- Section of Paediatric Infectious Disease, Imperial College London, London, UK
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Quicke P, Sun Y, Arias-Garcia M, Beykou M, Acker CD, Djamgoz MBA, Bakal C, Foust AJ. Voltage imaging reveals the dynamic electrical signatures of human breast cancer cells. Commun Biol 2022; 5:1178. [DOI: 10.1038/s42003-022-04077-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 10/05/2022] [Indexed: 11/13/2022] Open
Abstract
AbstractCancer cells feature a resting membrane potential (Vm) that is depolarized compared to normal cells, and express active ionic conductances, which factor directly in their pathophysiological behavior. Despite similarities to ‘excitable’ tissues, relatively little is known about cancer cell Vm dynamics. Here high-throughput, cellular-resolution Vm imaging reveals that Vm fluctuates dynamically in several breast cancer cell lines compared to non-cancerous MCF-10A cells. We characterize Vm fluctuations of hundreds of human triple-negative breast cancer MDA-MB-231 cells. By quantifying their Dynamic Electrical Signatures (DESs) through an unsupervised machine-learning protocol, we identify four classes ranging from "noisy” to “blinking/waving“. The Vm of MDA-MB-231 cells exhibits spontaneous, transient hyperpolarizations inhibited by the voltage-gated sodium channel blocker tetrodotoxin, and by calcium-activated potassium channel inhibitors apamin and iberiotoxin. The Vm of MCF-10A cells is comparatively static, but fluctuations increase following treatment with transforming growth factor-β1, a canonical inducer of the epithelial-to-mesenchymal transition. These data suggest that the ability to generate Vm fluctuations may be a property of hybrid epithelial-mesenchymal cells or those originated from luminal progenitors.
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Beykou M, Arias-Garcia M, Roumeliotis TI, Choudhary JS, Moser N, Georgiou P, Bakal C. Proteomic characterisation of triple negative breast cancer cells following CDK4/6 inhibition. Sci Data 2022; 9:395. [PMID: 35817775 PMCID: PMC9273754 DOI: 10.1038/s41597-022-01512-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 06/28/2022] [Indexed: 01/10/2023] Open
Abstract
When used in combination with hormone treatment, Palbociclib prolongs progression-free survival of patients with hormone receptor positive breast cancer. Mechanistically, Palbociclib inhibits CDK4/6 activity but the basis for differing sensitivity of cancer to Palbociclib is poorly understood. A common observation in a subset of Triple Negative Breast Cancers (TNBCs) is that prolonged CDK4/6 inhibition can engage a senescence-like state where cells exit the cell cycle, whilst, remaining metabolically active. To better understand the senescence-like cell state which arises after Palbociclib treatment we used mass spectrometry to quantify the proteome, phosphoproteome, and secretome of Palbociclib-treated MDA-MB-231 TNBC cells. We observed altered levels of cell cycle regulators, immune response, and key senescence markers upon Palbociclib treatment. These datasets provide a starting point for the derivation of biomarkers which could inform the future use CDK4/6 inhibitors in TNBC subtypes and guide the development of potential combination therapies.
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Affiliation(s)
- Melina Beykou
- Imperial College London, Department of Electrical and Electronic Engineering, Circuits and Systems Group, South Kensington Campus, London, SW7 2AZ, UK.
- Institute of Cancer Research, Division of Cancer Biology, Dynamical Cell Systems, London, SW3 6JB, UK.
- Cancer Research UK Convergence Science Centre, South Kensington Campus, London, SW7 2AZ, UK.
| | - Mar Arias-Garcia
- Institute of Cancer Research, Division of Cancer Biology, Dynamical Cell Systems, London, SW3 6JB, UK
| | - Theodoros I Roumeliotis
- Institute of Cancer Research, Division of Cancer Biology, Functional Proteomics, London, SW3 6JB, UK
| | - Jyoti S Choudhary
- Institute of Cancer Research, Division of Cancer Biology, Functional Proteomics, London, SW3 6JB, UK
| | - Nicolas Moser
- Imperial College London, Department of Electrical and Electronic Engineering, Circuits and Systems Group, South Kensington Campus, London, SW7 2AZ, UK.
- Cancer Research UK Convergence Science Centre, South Kensington Campus, London, SW7 2AZ, UK.
| | - Pantelis Georgiou
- Imperial College London, Department of Electrical and Electronic Engineering, Circuits and Systems Group, South Kensington Campus, London, SW7 2AZ, UK.
- Cancer Research UK Convergence Science Centre, South Kensington Campus, London, SW7 2AZ, UK.
| | - Chris Bakal
- Institute of Cancer Research, Division of Cancer Biology, Dynamical Cell Systems, London, SW3 6JB, UK.
- Cancer Research UK Convergence Science Centre, South Kensington Campus, London, SW7 2AZ, UK.
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