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Gagg H, Williams ST, Conroy S, Myers KN, McGarrity-Cottrell C, Jones C, Helleday T, Rantala J, Rominiyi O, Danson SJ, Collis SJ, Wells G. Ex-vivo drug screening of surgically resected glioma stem cells to replace murine avatars and provide personalise cancer therapy for glioblastoma patients. F1000Res 2024; 12:954. [PMID: 37799492 PMCID: PMC10548111 DOI: 10.12688/f1000research.135809.1] [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] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/12/2024] [Indexed: 10/07/2023] Open
Abstract
With diminishing returns and high clinical failure rates from traditional preclinical and animal-based drug discovery strategies, more emphasis is being placed on alternative drug discovery platforms. Ex vivo approaches represent a departure from both more traditional preclinical animal-based models and clinical-based strategies and aim to address intra-tumoural and inter-patient variability at an earlier stage of drug discovery. Additionally, these approaches could also offer precise treatment stratification for patients within a week of tumour resection in order to direct tailored therapy. One tumour group that could significantly benefit from such ex vivo approaches are high-grade gliomas, which exhibit extensive heterogeneity, cellular plasticity and therapy-resistant glioma stem cell (GSC) niches. Historic use of murine-based preclinical models for these tumours has largely failed to generate new therapies, resulting in relatively stagnant and unacceptable survival rates of around 12-15 months post-diagnosis over the last 50 years. The near universal use of DNA damaging chemoradiotherapy after surgical resection within standard-of-care (SoC) therapy regimens provides an opportunity to improve current treatments if we can identify efficient drug combinations in preclinical models that better reflect the complex inter-/intra-tumour heterogeneity, GSC plasticity and inherent DNA damage resistance mechanisms. We have therefore developed and optimised a high-throughput ex vivo drug screening platform; GliExP, which maintains GSC populations using immediately dissociated fresh surgical tissue. As a proof-of-concept for GliExP, we have optimised SoC therapy responses and screened 30+ small molecule therapeutics and preclinical compounds against tumours from 18 different patients, including multi-region spatial heterogeneity sampling from several individual tumours. Our data therefore provides a strong basis to build upon GliExP to incorporate combination-based oncology therapeutics in tandem with SoC therapies as an important preclinical alternative to murine models (reduction and replacement) to triage experimental therapeutics for clinical translation and deliver rapid identification of effective treatment strategies for individual gliomas.
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Affiliation(s)
- Hannah Gagg
- Oncology & Metabolism, The University of Sheffield, Sheffield, England, S10 2RX, UK
| | - Sophie T. Williams
- Oncology & Metabolism, The University of Sheffield, Sheffield, England, S10 2RX, UK
- Neurosurgery, Royal Hallamshire Hospital, Sheffield, S10 2JF, UK
| | - Samantha Conroy
- Oncology & Metabolism, The University of Sheffield, Sheffield, England, S10 2RX, UK
- Urology, Royal Hallamshire Hospital, Sheffield, S10 2JF, UK
| | - Katie N. Myers
- Oncology & Metabolism, The University of Sheffield, Sheffield, England, S10 2RX, UK
| | | | - Callum Jones
- Oncology & Metabolism, The University of Sheffield, Sheffield, England, S10 2RX, UK
| | - Thomas Helleday
- Oncology & Metabolism, The University of Sheffield, Sheffield, England, S10 2RX, UK
- Karolinska Institut, Solnavägen, Solna, 171 77, Sweden
| | - Juha Rantala
- Oncology & Metabolism, The University of Sheffield, Sheffield, England, S10 2RX, UK
- Misvik Biology Ltd, Karjakatu, Turku, FI-20520, Finland
| | - Ola Rominiyi
- Oncology & Metabolism, The University of Sheffield, Sheffield, England, S10 2RX, UK
- Neurosurgery, Royal Hallamshire Hospital, Sheffield, S10 2JF, UK
| | - Sarah J. Danson
- Oncology & Metabolism, The University of Sheffield, Sheffield, England, S10 2RX, UK
- Weston Park Hospital, Sheffield, S10 2SJ, UK
| | - Spencer J. Collis
- Oncology & Metabolism, The University of Sheffield, Sheffield, England, S10 2RX, UK
| | - Greg Wells
- Oncology & Metabolism, The University of Sheffield, Sheffield, England, S10 2RX, UK
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Vanderlinden A, Jones CG, Myers KN, Rominiyi O, Collis SJ. DNA damage response inhibitors enhance tumour treating fields (TTFields) potency in glioma stem-like cells. Br J Cancer 2023; 129:1829-1840. [PMID: 37777579 PMCID: PMC10667536 DOI: 10.1038/s41416-023-02454-0] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 09/19/2023] [Accepted: 09/22/2023] [Indexed: 10/02/2023] Open
Abstract
BACKGROUND High-grade gliomas are primary brain cancers with unacceptably low and persistent survival rates of 10-16 months for WHO grade 4 gliomas over the last 40 years, despite surgical resection and DNA-damaging chemo-radiotherapy. More recently, tumour-treating fields therapy (TTFields) has demonstrated modest survival benefit and been clinically approved in several countries. TTFields is thought to mediate anti-cancer activity by primarily disrupting mitosis. However, recent data suggest that TTFields may also attenuate DNA damage repair and replication fork dynamics, providing a potential platform for therapeutic combinations incorporating standard-of-care treatments and targeted DNA damage response inhibitors (DDRi). METHODS We have used patient-derived, typically resistant, glioma stem-like cells (GSCs) in combination with the previously validated preclinical Inovitro™ TTFields system together with a number of therapeutic DDRi. RESULTS We show that TTFields robustly activates PARP- and ATR-mediated DNA repair (including PARylation and CHK1 phosphorylation, respectively), whilst combining TTFields with PARP1 or ATR inhibitor treatment leads to significantly reduced clonogenic survival. The potency of each of these strategies is further enhanced by radiation treatment, leading to increased amounts of DNA damage with profound delay in DNA damage resolution. CONCLUSION To our knowledge, our findings represent the first report of TTFields applied with clinically approved or in-trial DDRi in GSC models and provides a basis for translational studies toward multimodal DDRi/TTFields-based therapeutic strategies for patients with these currently incurable tumours.
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Affiliation(s)
- Aurelie Vanderlinden
- Division of Clinical Medicine, The University of Sheffield, School of Medicine and Population Health, Sheffield, S10 2RX, UK
| | - Callum G Jones
- Division of Clinical Medicine, The University of Sheffield, School of Medicine and Population Health, Sheffield, S10 2RX, UK
| | - Katie N Myers
- Division of Clinical Medicine, The University of Sheffield, School of Medicine and Population Health, Sheffield, S10 2RX, UK
| | - Ola Rominiyi
- Division of Clinical Medicine, The University of Sheffield, School of Medicine and Population Health, Sheffield, S10 2RX, UK.
- Division of Neuroscience, The University of Sheffield, School of Medicine and Population Health, Sheffield, S10 2RX, UK.
- Department of Neurosurgery, Royal Hallamshire Hospital, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, S10 2JF, UK.
| | - Spencer J Collis
- Division of Clinical Medicine, The University of Sheffield, School of Medicine and Population Health, Sheffield, S10 2RX, UK.
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Carmell N, Rominiyi O, Myers KN, McGarrity-Cottrell C, Vanderlinden A, Lad N, Perroux-David E, El-Khamisy SF, Fernando M, Finegan KG, Brown S, Collis SJ. Identification and Validation of ERK5 as a DNA Damage Modulating Drug Target in Glioblastoma. Cancers (Basel) 2021; 13:cancers13050944. [PMID: 33668183 PMCID: PMC7956595 DOI: 10.3390/cancers13050944] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/18/2021] [Accepted: 02/22/2021] [Indexed: 12/22/2022] Open
Abstract
Simple Summary Glioblastomas are high-grade brain tumours and are the most common form of malignancy arising in the brain. Patient survival has improved little over the last 40 years, highlighting an urgent unmet need for more effective treatments for these tumours. Current standard-of-care treatment involves surgical removal of as much of the tumour as possible followed by a course of chemo-/radiotherapy. The main chemotherapeutic drug used is called temozolomide, however even with this treatment regimen, the average patient survival following diagnosis is around 15 months. We have identified a protein called ERK5 which is present at higher levels in these high-grade brain tumours compared to normal brain tissue, and which is also associated with resistance to temozolomide and poor patient survival. Additionally, we show that targeting ERK5 in brain tumour cells can improve the effectiveness of temozolomide in killing these tumour cells and offers potential much-needed future clinical benefit to patients diagnosed with glioblastoma. Abstract Brain tumours kill more children and adults under 40 than any other cancer, with approximately half of primary brain tumours being diagnosed as high-grade malignancies known as glioblastomas. Despite de-bulking surgery combined with chemo-/radiotherapy regimens, the mean survival for these patients is only around 15 months, with less than 10% surviving over 5 years. This dismal prognosis highlights the urgent need to develop novel agents to improve the treatment of these tumours. To address this need, we carried out a human kinome siRNA screen to identify potential drug targets that augment the effectiveness of temozolomide (TMZ)—the standard-of-care chemotherapeutic agent used to treat glioblastoma. From this we identified ERK5/MAPK7, which we subsequently validated using a range of siRNA and small molecule inhibitors within a panel of glioma cells. Mechanistically, we find that ERK5 promotes efficient repair of TMZ-induced DNA lesions to confer cell survival and clonogenic capacity. Finally, using several glioblastoma patient cohorts we provide target validation data for ERK5 as a novel drug target, revealing that heightened ERK5 expression at both the mRNA and protein level is associated with increased tumour grade and poorer patient survival. Collectively, these findings provide a foundation to develop clinically effective ERK5 targeting strategies in glioblastomas and establish much-needed enhancement of the therapeutic repertoire used to treat this currently incurable disease.
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Affiliation(s)
- Natasha Carmell
- Weston Park Cancer Centre, Department of Oncology & Metabolism, The University of Sheffield Medical School, Sheffield S10 2SJ, UK; (N.C.); (O.R.); (K.N.M.); (C.M.-C.); (A.V.); (N.L.); (E.P.-D.)
| | - Ola Rominiyi
- Weston Park Cancer Centre, Department of Oncology & Metabolism, The University of Sheffield Medical School, Sheffield S10 2SJ, UK; (N.C.); (O.R.); (K.N.M.); (C.M.-C.); (A.V.); (N.L.); (E.P.-D.)
- Department of Neurosurgery, Royal Hallamshire Hospital, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield S10 2JF, UK
| | - Katie N. Myers
- Weston Park Cancer Centre, Department of Oncology & Metabolism, The University of Sheffield Medical School, Sheffield S10 2SJ, UK; (N.C.); (O.R.); (K.N.M.); (C.M.-C.); (A.V.); (N.L.); (E.P.-D.)
| | - Connor McGarrity-Cottrell
- Weston Park Cancer Centre, Department of Oncology & Metabolism, The University of Sheffield Medical School, Sheffield S10 2SJ, UK; (N.C.); (O.R.); (K.N.M.); (C.M.-C.); (A.V.); (N.L.); (E.P.-D.)
| | - Aurelie Vanderlinden
- Weston Park Cancer Centre, Department of Oncology & Metabolism, The University of Sheffield Medical School, Sheffield S10 2SJ, UK; (N.C.); (O.R.); (K.N.M.); (C.M.-C.); (A.V.); (N.L.); (E.P.-D.)
| | - Nikita Lad
- Weston Park Cancer Centre, Department of Oncology & Metabolism, The University of Sheffield Medical School, Sheffield S10 2SJ, UK; (N.C.); (O.R.); (K.N.M.); (C.M.-C.); (A.V.); (N.L.); (E.P.-D.)
| | - Eva Perroux-David
- Weston Park Cancer Centre, Department of Oncology & Metabolism, The University of Sheffield Medical School, Sheffield S10 2SJ, UK; (N.C.); (O.R.); (K.N.M.); (C.M.-C.); (A.V.); (N.L.); (E.P.-D.)
| | - Sherif F. El-Khamisy
- Sheffield Institute for Nucleic Acids (SInFoNiA) and the Healthy Lifespan Institute, University of Sheffield, Sheffield S10 2TN, UK;
- Institute of Cancer Therapeutics, University of Bradford, Bradford BD7 1DP, UK
| | - Malee Fernando
- Department of Histopathology, Royal Hallamshire Hospital, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield S10 2TN, UK;
| | - Katherine G. Finegan
- Faculty of Biology Medicine and Health, University of Manchester, Manchester M13 9PL, UK;
| | - Stephen Brown
- Department of Biomedical Science, The Sheffield RNAi Screening Facility, The University of Sheffield, Sheffield S10 2TN, UK;
| | - Spencer J. Collis
- Weston Park Cancer Centre, Department of Oncology & Metabolism, The University of Sheffield Medical School, Sheffield S10 2SJ, UK; (N.C.); (O.R.); (K.N.M.); (C.M.-C.); (A.V.); (N.L.); (E.P.-D.)
- Sheffield Institute for Nucleic Acids (SInFoNiA) and the Healthy Lifespan Institute, University of Sheffield, Sheffield S10 2TN, UK;
- Correspondence: ; Tel.: +44-(0)114-215-9043
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Barone G, Arora A, Ganesh A, Abdel-Fatah T, Moseley P, Ali R, Chan SY, Savva C, Schiavone K, Carmell N, Myers KN, Rakha EA, Madhusudan S, Collis SJ. The relationship of CDK18 expression in breast cancer to clinicopathological parameters and therapeutic response. Oncotarget 2018; 9:29508-29524. [PMID: 30034634 PMCID: PMC6047673 DOI: 10.18632/oncotarget.25686] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 06/13/2018] [Indexed: 02/06/2023] Open
Abstract
Background Cyclin-Dependent Kinases (CDKs) are established anti-cancer drug targets and a new generation of CDK inhibitors are providing clinical benefits to a sub-set of breast cancer patients. We have recently shown that human CDK18 promotes efficient cellular responses to replication stress. In the current study, we have investigated the clinicopathological and functional significance of CDK18 expression levels in breast cancers. Results High CDK18 protein expression was associated with a triple negative and basal-like phenotype (p = 0.021 and 0.027 respectively) as well as improved patient survival, which was particularly significant in ER negative breast cancers (n = 594, Log Rank 6.724, p = 0.01) and those treated with chemotherapy (n = 270, Log Rank 4.575, p = 0.03). In agreement with these clinical findings, breast cancer cells genetically manipulated using a dCRISPR approach to express high levels of endogenous CDK18 exhibited an increased sensitivity to replication stress-inducing chemotherapeutic agents, as a consequence to defective replication stress signalling at the molecular level. Conclusions These data reveal that CDK18 protein levels may predict breast cancer disease progression and response to chemotherapy, and provide further rationale for potential targeting of CDK18 as part of novel anti-cancer strategies for human cancers. Materials and Methods CDK18 protein expression was evaluated in 1650 breast cancers and correlated to clinicopathological parameters and survival outcomes. Similar analyses were carried out for genetic and transcriptomic changes in CDK18 within several publically available breast cancer cohorts. Additionally, we used a deactivated CRISPR/Cas9 approach (dCRISPR) to elucidate the molecular consequences of heightened endogenous CDK18 expression within breast cancer cells.
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Affiliation(s)
- Giancarlo Barone
- Sheffield Institute for Nucleic Acids (SInFoNiA), Academic Unit of Molecular Oncology, Department of Oncology and Metabolism, University of Sheffield Medical School, Sheffield, UK
| | - Arvind Arora
- Academic Unit of Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, UK
| | - Anil Ganesh
- Sheffield Institute for Nucleic Acids (SInFoNiA), Academic Unit of Molecular Oncology, Department of Oncology and Metabolism, University of Sheffield Medical School, Sheffield, UK
| | - Tarek Abdel-Fatah
- Academic Unit of Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, UK
| | - Paul Moseley
- Academic Unit of Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, UK
| | - Reem Ali
- Academic Unit of Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, UK
| | - Stephen Yt Chan
- Academic Unit of Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, UK
| | - Constantinos Savva
- Academic Unit of Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, UK
| | - Kristina Schiavone
- Sheffield Institute for Nucleic Acids (SInFoNiA), Academic Unit of Molecular Oncology, Department of Oncology and Metabolism, University of Sheffield Medical School, Sheffield, UK
| | - Natasha Carmell
- Sheffield Institute for Nucleic Acids (SInFoNiA), Academic Unit of Molecular Oncology, Department of Oncology and Metabolism, University of Sheffield Medical School, Sheffield, UK
| | - Katie N Myers
- Sheffield Institute for Nucleic Acids (SInFoNiA), Academic Unit of Molecular Oncology, Department of Oncology and Metabolism, University of Sheffield Medical School, Sheffield, UK
| | - Emad A Rakha
- Academic Unit of Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, UK
| | - Srinivasan Madhusudan
- Academic Unit of Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, UK
| | - Spencer J Collis
- Sheffield Institute for Nucleic Acids (SInFoNiA), Academic Unit of Molecular Oncology, Department of Oncology and Metabolism, University of Sheffield Medical School, Sheffield, UK
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Barone G, Staples CJ, Ganesh A, Patterson KW, Bryne DP, Myers KN, Patil AA, Eyers CE, Maslen S, Skehel JM, Eyers PA, Collis SJ. Human CDK18 promotes replication stress signaling and genome stability. Nucleic Acids Res 2016; 44:8772-8785. [PMID: 27382066 PMCID: PMC5062979 DOI: 10.1093/nar/gkw615] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 06/27/2016] [Accepted: 06/27/2016] [Indexed: 01/09/2023] Open
Abstract
Cyclin-dependent kinases (CDKs) coordinate cell cycle checkpoints with DNA repair mechanisms that together maintain genome stability. However, the myriad mechanisms that can give rise to genome instability are still to be fully elucidated. Here, we identify CDK18 (PCTAIRE 3) as a novel regulator of genome stability, and show that depletion of CDK18 causes an increase in endogenous DNA damage and chromosomal abnormalities. CDK18-depleted cells accumulate in early S-phase, exhibiting retarded replication fork kinetics and reduced ATR kinase signaling in response to replication stress. Mechanistically, CDK18 interacts with RAD9, RAD17 and TOPBP1, and CDK18-deficiency results in a decrease in both RAD17 and RAD9 chromatin retention in response to replication stress. Importantly, we demonstrate that these phenotypes are rescued by exogenous CDK18 in a kinase-dependent manner. Collectively, these data reveal a rate-limiting role for CDK18 in replication stress signalling and establish it as a novel regulator of genome integrity.
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Affiliation(s)
- Giancarlo Barone
- Genome Stability Group, Sheffield Institute for Nucleic Acids (SInFoNiA), Academic Unit of Molecular Oncology, Department of Oncology & Metabolism, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Christopher J Staples
- Genome Stability Group, Sheffield Institute for Nucleic Acids (SInFoNiA), Academic Unit of Molecular Oncology, Department of Oncology & Metabolism, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Anil Ganesh
- Genome Stability Group, Sheffield Institute for Nucleic Acids (SInFoNiA), Academic Unit of Molecular Oncology, Department of Oncology & Metabolism, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Karl W Patterson
- DNA Replication and Repair Group, Sheffield Institute for Nucleic Acids (SInFoNiA), Academic Unit of Molecular Oncology, Department of Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Dominic P Bryne
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, UK
| | - Katie N Myers
- Genome Stability Group, Sheffield Institute for Nucleic Acids (SInFoNiA), Academic Unit of Molecular Oncology, Department of Oncology & Metabolism, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Abhijit A Patil
- Genome Stability Group, Sheffield Institute for Nucleic Acids (SInFoNiA), Academic Unit of Molecular Oncology, Department of Oncology & Metabolism, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Claire E Eyers
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, UK
| | - Sarah Maslen
- Mass Spectrometry Group, The MRC Laboratory of Molecular Biology, Division of Cell Biology, Hills Road, Cambridge, CB2 0QH, UK
| | - J Mark Skehel
- Mass Spectrometry Group, The MRC Laboratory of Molecular Biology, Division of Cell Biology, Hills Road, Cambridge, CB2 0QH, UK
| | - Patrick A Eyers
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, UK
| | - Spencer J Collis
- Genome Stability Group, Sheffield Institute for Nucleic Acids (SInFoNiA), Academic Unit of Molecular Oncology, Department of Oncology & Metabolism, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
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Staples CJ, Barone G, Myers KN, Ganesh A, Gibbs-Seymour I, Patil AA, Beveridge RD, Daye C, Beniston R, Maslen S, Ahel I, Skehel JM, Collis SJ. MRNIP/C5orf45 Interacts with the MRN Complex and Contributes to the DNA Damage Response. Cell Rep 2016; 16:2565-2575. [PMID: 27568553 PMCID: PMC5014761 DOI: 10.1016/j.celrep.2016.07.087] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 05/25/2016] [Accepted: 07/27/2016] [Indexed: 11/27/2022] Open
Abstract
Through an RNAi-based screen for previously uncharacterized regulators of genome stability, we have identified the human protein C5orf45 as an important factor in preventing the accumulation of DNA damage in human cells. Here, we functionally characterize C5orf45 as a binding partner of the MRE11-RAD50-NBS1 (MRN) damage-sensing complex. Hence, we rename C5orf45 as MRNIP for MRN-interacting protein (MRNIP). We find that MRNIP is rapidly recruited to sites of DNA damage. Cells depleted of MRNIP display impaired chromatin loading of the MRN complex, resulting in reduced DNA end resection and defective ATM-mediated DNA damage signaling, a reduced ability to repair DNA breaks, and radiation sensitivity. Finally, we show that MRNIP phosphorylation on serine 115 leads to its nuclear localization, and this modification is required for MRNIP’s role in promoting genome stability. Collectively, these data reveal that MRNIP is an important component of the human DNA damage response. C5orf45/MRNIP is identified as a MRN-interacting protein MRNIP facilitates MRN complex association with chromatin MRNIP promotes efficient ATM-mediated DDR signaling MRNIP prevents accumulation of DNA damage in human cells
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Affiliation(s)
- Christopher J Staples
- Sheffield Institute for Nucleic Acids (SInFoNiA), Department of Oncology and Metabolism, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Giancarlo Barone
- Sheffield Institute for Nucleic Acids (SInFoNiA), Department of Oncology and Metabolism, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Katie N Myers
- Sheffield Institute for Nucleic Acids (SInFoNiA), Department of Oncology and Metabolism, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Anil Ganesh
- Sheffield Institute for Nucleic Acids (SInFoNiA), Department of Oncology and Metabolism, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Ian Gibbs-Seymour
- Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK
| | - Abhijit A Patil
- Sheffield Institute for Nucleic Acids (SInFoNiA), Department of Oncology and Metabolism, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Ryan D Beveridge
- Sheffield Institute for Nucleic Acids (SInFoNiA), Department of Oncology and Metabolism, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Caroline Daye
- Sheffield Institute for Nucleic Acids (SInFoNiA), Department of Oncology and Metabolism, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Richard Beniston
- Biological Mass Spectrometry Facility biOMICS, University of Sheffield, Brook Hill Road, Sheffield S3 7HF, UK
| | - Sarah Maslen
- Division of Cell Biology, Mass Spectrometry Group, The MRC Laboratory of Molecular Biology, Hills Road, Cambridge CB2 0QH, UK
| | - Ivan Ahel
- Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK
| | - J Mark Skehel
- Division of Cell Biology, Mass Spectrometry Group, The MRC Laboratory of Molecular Biology, Hills Road, Cambridge CB2 0QH, UK
| | - Spencer J Collis
- Sheffield Institute for Nucleic Acids (SInFoNiA), Department of Oncology and Metabolism, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK.
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Beveridge RD, Staples CJ, Patil AA, Myers KN, Maslen S, Skehel JM, Boulton SJ, Collis SJ. The leukemia-associated Rho guanine nucleotide exchange factor LARG is required for efficient replication stress signaling. Cell Cycle 2014; 13:3450-9. [PMID: 25485589 DOI: 10.4161/15384101.2014.956529] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
We previously identified and characterized TELO2 as a human protein that facilitates efficient DNA damage response (DDR) signaling. A subsequent yeast 2-hybrid screen identified LARG; Leukemia-Associated Rho Guanine Nucleotide Exchange Factor (also known as Arhgef12), as a potential novel TELO2 interactor. LARG was previously shown to interact with Pericentrin (PCNT), which, like TELO2, is required for efficient replication stress signaling. Here we confirm interactions between LARG, TELO2 and PCNT and show that a sub-set of LARG co-localizes with PCNT at the centrosome. LARG-deficient cells exhibit replication stress signaling defects as evidenced by; supernumerary centrosomes, reduced replication stress-induced γH2AX and RPA nuclear foci formation, and reduced activation of the replication stress signaling effector kinase Chk1 in response to hydroxyurea. As such, LARG-deficient cells are sensitive to replication stress-inducing agents such as hydroxyurea and mitomycin C. Conversely we also show that depletion of TELO2 and the replication stress signaling kinase ATR leads to RhoA signaling defects. These data therefore reveal a level of crosstalk between the RhoA and DDR signaling pathways. Given that mutations in both ATR and PCNT can give rise to the related primordial dwarfism disorders of Seckel Syndrome and Microcephalic osteodysplastic primordial dwarfism type II (MOPDII) respectively, which both exhibit defects in ATR-dependent checkpoint signaling, these data also raise the possibility that mutations in LARG or disruption to RhoA signaling may be contributory factors to the etiology of a sub-set of primordial dwarfism disorders.
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Affiliation(s)
- Ryan D Beveridge
- a Genome Stability Group ; Department of Oncology ; Academic Unit of Molecular Oncology ; University of Sheffield Medical School ; Sheffield , UK
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Staples CJ, Myers KN, Beveridge RDD, Patil AA, Howard AE, Barone G, Lee AJX, Swanton C, Howell M, Maslen S, Skehel JM, Boulton SJ, Collis SJ. Ccdc13 is a novel human centriolar satellite protein required for ciliogenesis and genome stability. J Cell Sci 2014; 127:2910-9. [PMID: 24816561 DOI: 10.1242/jcs.147785] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2024] Open
Abstract
Here, we identify coiled-coil domain-containing protein 13 (Ccdc13) in a genome-wide RNA interference screen for regulators of genome stability. We establish that Ccdc13 is a newly identified centriolar satellite protein that interacts with PCM1, Cep290 and pericentrin and prevents the accumulation of DNA damage during mitotic transit. Depletion of Ccdc13 results in the loss of microtubule organisation in a manner similar to PCM1 and Cep290 depletion, although Ccdc13 is not required for satellite integrity. We show that microtubule regrowth is enhanced in Ccdc13-depleted cells, but slowed in cells that overexpress Ccdc13. Furthermore, in serum-starved cells, Ccdc13 localises to the basal body, is required for primary cilia formation and promotes the localisation of the ciliopathy protein BBS4 to both centriolar satellites and cilia. These data highlight the emerging link between DNA damage response factors, centriolar and peri-centriolar satellites and cilia-associated proteins and implicate Ccdc13 as a centriolar satellite protein that functions to promote both genome stability and cilia formation.
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Affiliation(s)
- Christopher J Staples
- Genome Stability Group, CR-UK/YCR Sheffield Cancer Research Centre, Department of Oncology, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Katie N Myers
- Genome Stability Group, CR-UK/YCR Sheffield Cancer Research Centre, Department of Oncology, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Ryan D D Beveridge
- Genome Stability Group, CR-UK/YCR Sheffield Cancer Research Centre, Department of Oncology, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Abhijit A Patil
- Genome Stability Group, CR-UK/YCR Sheffield Cancer Research Centre, Department of Oncology, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Anna E Howard
- Genome Stability Group, CR-UK/YCR Sheffield Cancer Research Centre, Department of Oncology, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Giancarlo Barone
- Genome Stability Group, CR-UK/YCR Sheffield Cancer Research Centre, Department of Oncology, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Alvin J X Lee
- Translational Cancer Therapeutics Laboratory, Cancer Research UK London Research Institute, 44 Lincoln's Inn Fields, London WC2A 3LY, UK
| | - Charles Swanton
- Translational Cancer Therapeutics Laboratory, Cancer Research UK London Research Institute, 44 Lincoln's Inn Fields, London WC2A 3LY, UK
| | - Michael Howell
- High Throughput Screening Facility, CR-UK London Research Institute, 44 Lincoln's Inn Fields London, WC2A 3LY, UK
| | - Sarah Maslen
- Mass Spectrometry Group, The MRC Laboratory of Molecular Biology, Division of Cell Biology, Hills Road, Cambridge, CB2 0QH, UK
| | - J Mark Skehel
- Mass Spectrometry Group, The MRC Laboratory of Molecular Biology, Division of Cell Biology, Hills Road, Cambridge, CB2 0QH, UK
| | - Simon J Boulton
- DNA CR-UK Damage Response Laboratory, London Research Institute, Clare Hall Laboratories, South Mimms, EN6 3LD, UK
| | - Spencer J Collis
- Genome Stability Group, CR-UK/YCR Sheffield Cancer Research Centre, Department of Oncology, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
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Staples CJ, Myers KN, Beveridge RDD, Patil AA, Lee AJX, Swanton C, Howell M, Boulton SJ, Collis SJ. The centriolar satellite protein Cep131 is important for genome stability. Development 2013. [DOI: 10.1242/dev.092759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Staples CJ, Myers KN, Beveridge RDD, Patil AA, Lee AJX, Swanton C, Howell M, Boulton SJ, Collis SJ. The centriolar satellite protein Cep131 is important for genome stability. J Cell Sci 2012; 125:4770-9. [PMID: 22797915 DOI: 10.1242/jcs.104059] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The centrosome acts as a centre for microtubule organisation and plays crucial roles in cell polarity, migration, growth and division. Cep131 has recently been described as a basal body component essential for cilium formation, but its function in non-ciliogenic cells is unknown. We identified human Cep131 (also known as AZI1) in a screen for regulators of genome stability. We show that centrosomal localisation of Cep131 is cell-cycle-regulated and requires both an intact microtubule network and a functional dynein-dynactin transport system. Cep131 is recruited to centriolar satellites by PCM1, and localised to the centriolar core region by both pericentrin and Cep290. Depletion of Cep131 results in a reduction in proliferation rate, centriole amplification, an increased frequency of multipolar mitosis, chromosomal instability and an increase in post-mitotic DNA damage. These data therefore highlight the importance of human Cep131 for maintaining genomic integrity.
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Affiliation(s)
- Christopher J Staples
- Genome Stability Group, CR-UK/YCR Sheffield Cancer Research Centre, YCR Institute for Cancer Studies, Department of Oncology, University of Sheffield Medical School, UK
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