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Payapilly A, Guilbert R, Descamps T, White G, Magee P, Zhou C, Kerr A, Simpson KL, Blackhall F, Dive C, Malliri A. TIAM1-RAC1 promote small-cell lung cancer cell survival through antagonizing Nur77-induced BCL2 conformational change. Cell Rep 2021; 37:109979. [PMID: 34758330 PMCID: PMC8595642 DOI: 10.1016/j.celrep.2021.109979] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 08/30/2021] [Accepted: 10/20/2021] [Indexed: 12/17/2022] Open
Abstract
Small-cell lung cancer (SCLC), an aggressive neuroendocrine malignancy, has limited treatment options beyond platinum-based chemotherapy, whereafter acquired resistance is rapid and common. By analyzing expression data from SCLC tumors, patient-derived models, and established cell lines, we show that the expression of TIAM1, an activator of the small GTPase RAC1, is associated with a neuroendocrine gene program. TIAM1 depletion or RAC1 inhibition reduces viability and tumorigenicity of SCLC cells by increasing apoptosis associated with conversion of BCL2 from its pro-survival to pro-apoptotic function via BH3 domain exposure. This conversion is dependent upon cytoplasmic translocation of Nur77, an orphan nuclear receptor. TIAM1 interacts with and sequesters Nur77 in SCLC cell nuclei and TIAM1 depletion or RAC1 inhibition promotes Nur77 translocation to the cytoplasm. Mutant TIAM1 with reduced Nur77 binding fails to suppress apoptosis triggered by TIAM1 depletion. In conclusion, TIAM1-RAC1 signaling promotes SCLC cell survival via Nur77 nuclear sequestration.
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MESH Headings
- Animals
- Apoptosis
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Cell Proliferation
- Female
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic
- Humans
- Lung Neoplasms/genetics
- Lung Neoplasms/metabolism
- Lung Neoplasms/pathology
- Mice
- Mice, Inbred NOD
- Mice, SCID
- Nuclear Receptor Subfamily 4, Group A, Member 1/genetics
- Nuclear Receptor Subfamily 4, Group A, Member 1/metabolism
- Protein Conformation
- Proto-Oncogene Proteins c-bcl-2/chemistry
- Proto-Oncogene Proteins c-bcl-2/genetics
- Proto-Oncogene Proteins c-bcl-2/metabolism
- Small Cell Lung Carcinoma/genetics
- Small Cell Lung Carcinoma/metabolism
- Small Cell Lung Carcinoma/pathology
- T-Lymphoma Invasion and Metastasis-inducing Protein 1/genetics
- T-Lymphoma Invasion and Metastasis-inducing Protein 1/metabolism
- Tumor Cells, Cultured
- Xenograft Model Antitumor Assays
- rac1 GTP-Binding Protein/genetics
- rac1 GTP-Binding Protein/metabolism
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Affiliation(s)
- Aishwarya Payapilly
- Cell Signalling Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park SK10 4TG, UK; Cancer Research UK Lung Cancer Centre of Excellence, Manchester, UK
| | - Ryan Guilbert
- Cell Signalling Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park SK10 4TG, UK; Cancer Research UK Lung Cancer Centre of Excellence, Manchester, UK
| | - Tine Descamps
- Cancer Research UK Lung Cancer Centre of Excellence, Manchester, UK; Cancer Research UK Manchester Institute Cancer Biomarker Centre, The University of Manchester, Alderley Park SK10 4TG, UK
| | - Gavin White
- Cell Signalling Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park SK10 4TG, UK; Cancer Research UK Lung Cancer Centre of Excellence, Manchester, UK
| | - Peter Magee
- Cell Signalling Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park SK10 4TG, UK; Cancer Research UK Lung Cancer Centre of Excellence, Manchester, UK
| | - Cong Zhou
- Cancer Research UK Lung Cancer Centre of Excellence, Manchester, UK; Cancer Research UK Manchester Institute Cancer Biomarker Centre, The University of Manchester, Alderley Park SK10 4TG, UK
| | - Alastair Kerr
- Cancer Research UK Lung Cancer Centre of Excellence, Manchester, UK; Cancer Research UK Manchester Institute Cancer Biomarker Centre, The University of Manchester, Alderley Park SK10 4TG, UK
| | - Kathryn L Simpson
- Cancer Research UK Lung Cancer Centre of Excellence, Manchester, UK; Cancer Research UK Manchester Institute Cancer Biomarker Centre, The University of Manchester, Alderley Park SK10 4TG, UK
| | - Fiona Blackhall
- Cancer Research UK Lung Cancer Centre of Excellence, Manchester, UK; The Christie NHS Foundation Trust, Manchester, UK; Division of Cancer Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Caroline Dive
- Cancer Research UK Lung Cancer Centre of Excellence, Manchester, UK; Cancer Research UK Manchester Institute Cancer Biomarker Centre, The University of Manchester, Alderley Park SK10 4TG, UK
| | - Angeliki Malliri
- Cell Signalling Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park SK10 4TG, UK; Cancer Research UK Lung Cancer Centre of Excellence, Manchester, UK.
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Burton J, Manning CS, Rattray M, Papalopulu N, Kursawe J. Inferring kinetic parameters of oscillatory gene regulation from single cell time-series data. J R Soc Interface 2021; 18:20210393. [PMID: 34583566 PMCID: PMC8479358 DOI: 10.1098/rsif.2021.0393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 08/26/2021] [Indexed: 11/19/2022] Open
Abstract
Gene expression dynamics, such as stochastic oscillations and aperiodic fluctuations, have been associated with cell fate changes in multiple contexts, including development and cancer. Single cell live imaging of protein expression with endogenous reporters is widely used to observe such gene expression dynamics. However, the experimental investigation of regulatory mechanisms underlying the observed dynamics is challenging, since these mechanisms include complex interactions of multiple processes, including transcription, translation and protein degradation. Here, we present a Bayesian method to infer kinetic parameters of oscillatory gene expression regulation using an auto-negative feedback motif with delay. Specifically, we use a delay-adapted nonlinear Kalman filter within a Metropolis-adjusted Langevin algorithm to identify posterior probability distributions. Our method can be applied to time-series data on gene expression from single cells and is able to infer multiple parameters simultaneously. We apply it to published data on murine neural progenitor cells and show that it outperforms alternative methods. We further analyse how parameter uncertainty depends on the duration and time resolution of an imaging experiment, to make experimental design recommendations. This work demonstrates the utility of parameter inference on time course data from single cells and enables new studies on cell fate changes and population heterogeneity.
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Affiliation(s)
- Joshua Burton
- Division of Informatics, Imaging and Data Sciences, Faculty of Biology Medicine and Health, The University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Cerys S. Manning
- Division of Developmental Biology and Medicine, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Magnus Rattray
- Division of Informatics, Imaging and Data Sciences, Faculty of Biology Medicine and Health, The University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Nancy Papalopulu
- Division of Developmental Biology and Medicine, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Jochen Kursawe
- School of Mathematics and Statistics, University of St Andrews, North Haugh, St Andrews, KY16 9SS, UK
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