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Castejón-Griñán M, Albers E, Simón-Carrasco L, Aguilera P, Sbroggio M, Pladevall-Morera D, Ingham A, Lim E, Guillen-Benitez A, Pietrini E, Lisby M, Hickson ID, Lopez-Contreras AJ. PICH deficiency limits the progression of MYC-induced B-cell lymphoma. Blood Cancer J 2024; 14:16. [PMID: 38253636 PMCID: PMC10803365 DOI: 10.1038/s41408-024-00979-y] [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: 07/03/2023] [Revised: 12/20/2023] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
Plk1-interacting checkpoint helicase (PICH) is a DNA translocase involved in resolving ultrafine anaphase DNA bridges and, therefore, is important to safeguard chromosome segregation and stability. PICH is overexpressed in various human cancers, particularly in lymphomas such as Burkitt lymphoma, which is caused by MYC translocations. To investigate the relevance of PICH in cancer development and progression, we have combined novel PICH-deficient mouse models with the Eμ-Myc transgenic mouse model, which recapitulates B-cell lymphoma development. We have observed that PICH deficiency delays the onset of MYC-induced lymphomas in Pich heterozygous females. Moreover, using a Pich conditional knockout mouse model, we have found that Pich deletion in adult mice improves the survival of Eμ-Myc transgenic mice. Notably, we show that Pich deletion in healthy adult mice is well tolerated, supporting PICH as a suitable target for anticancer therapies. Finally, we have corroborated these findings in two human Burkitt lymphoma cell lines and we have found that the death of cancer cells was accompanied by chromosomal instability. Based on these findings, we propose PICH as a potential therapeutic target for Burkitt lymphoma and for other cancers where PICH is overexpressed.
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Affiliation(s)
- María Castejón-Griñán
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Sevilla - Universidad Pablo de Olavide, Seville, Spain
- Center for Chromosome Stability and Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Eliene Albers
- Center for Chromosome Stability and Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Lucía Simón-Carrasco
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Sevilla - Universidad Pablo de Olavide, Seville, Spain
| | - Paula Aguilera
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Sevilla - Universidad Pablo de Olavide, Seville, Spain
- Center for Chromosome Stability and Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Mauro Sbroggio
- Center for Chromosome Stability and Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - David Pladevall-Morera
- Center for Chromosome Stability and Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Andreas Ingham
- Center for Chromosome Stability and Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Ernest Lim
- Center for Chromosome Stability, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Alba Guillen-Benitez
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Sevilla - Universidad Pablo de Olavide, Seville, Spain
| | - Elena Pietrini
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Sevilla - Universidad Pablo de Olavide, Seville, Spain
| | - Michael Lisby
- Center for Chromosome Stability, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Ian D Hickson
- Center for Chromosome Stability and Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Andres J Lopez-Contreras
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Sevilla - Universidad Pablo de Olavide, Seville, Spain.
- Center for Chromosome Stability and Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark.
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Romics L, Ingham A, Sophia S, Mansell J, Arthur L, Campbell J, Seth A, Reid J, Loane J, Wilson C, Doughty J. Targeted axillary dissection or sentinel node biopsy after neo-adjuvant treatment in clinically node positive patients – the West of Scotland experience. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)01391-0] [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: 11/19/2022]
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Pladevall-Morera D, Castejón-Griñán M, Aguilera P, Gaardahl K, Ingham A, Brosnan-Cashman JA, Meeker AK, Lopez-Contreras AJ. ATRX-Deficient High-Grade Glioma Cells Exhibit Increased Sensitivity to RTK and PDGFR Inhibitors. Cancers (Basel) 2022; 14:cancers14071790. [PMID: 35406561 PMCID: PMC8997088 DOI: 10.3390/cancers14071790] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 02/15/2022] [Revised: 03/21/2022] [Accepted: 03/28/2022] [Indexed: 12/10/2022] Open
Abstract
High-grade glioma, including anaplastic astrocytoma and glioblastoma (GBM) patients, have a poor prognosis due to the lack of effective treatments. Therefore, the development of new therapeutic strategies to treat these gliomas is urgently required. Given that high-grade gliomas frequently harbor mutations in the SNF2 family chromatin remodeler ATRX, we performed a screen to identify FDA-approved drugs that are toxic to ATRX-deficient cells. Our findings reveal that multi-targeted receptor tyrosine kinase (RTK) and platelet-derived growth factor receptor (PDGFR) inhibitors cause higher cellular toxicity in high-grade glioma ATRX-deficient cells. Furthermore, we demonstrate that a combinatorial treatment of RTKi with temozolomide (TMZ)-the current standard of care treatment for GBM patients-causes pronounced toxicity in ATRX-deficient high-grade glioma cells. Our findings suggest that combinatorial treatments with TMZ and RTKi may increase the therapeutic window of opportunity in patients who suffer high-grade gliomas with ATRX mutations. Thus, we recommend incorporating the ATRX status into the analyses of clinical trials with RTKi and PDGFRi.
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Affiliation(s)
- David Pladevall-Morera
- Department of Cellular and Molecular Medicine, DNRF Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, 2200 Copenhagen, Denmark; (D.P.-M.); (M.C.-G.); (P.A.); (K.G.); (A.I.)
| | - María Castejón-Griñán
- Department of Cellular and Molecular Medicine, DNRF Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, 2200 Copenhagen, Denmark; (D.P.-M.); (M.C.-G.); (P.A.); (K.G.); (A.I.)
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Sevilla, Universidad Pablo de Olavide, 41013 Seville, Spain
| | - Paula Aguilera
- Department of Cellular and Molecular Medicine, DNRF Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, 2200 Copenhagen, Denmark; (D.P.-M.); (M.C.-G.); (P.A.); (K.G.); (A.I.)
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Sevilla, Universidad Pablo de Olavide, 41013 Seville, Spain
| | - Karina Gaardahl
- Department of Cellular and Molecular Medicine, DNRF Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, 2200 Copenhagen, Denmark; (D.P.-M.); (M.C.-G.); (P.A.); (K.G.); (A.I.)
| | - Andreas Ingham
- Department of Cellular and Molecular Medicine, DNRF Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, 2200 Copenhagen, Denmark; (D.P.-M.); (M.C.-G.); (P.A.); (K.G.); (A.I.)
| | - Jacqueline A. Brosnan-Cashman
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (J.A.B.-C.); (A.K.M.)
| | - Alan K. Meeker
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (J.A.B.-C.); (A.K.M.)
| | - Andres J. Lopez-Contreras
- Department of Cellular and Molecular Medicine, DNRF Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, 2200 Copenhagen, Denmark; (D.P.-M.); (M.C.-G.); (P.A.); (K.G.); (A.I.)
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Sevilla, Universidad Pablo de Olavide, 41013 Seville, Spain
- Correspondence:
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la Cour Freiesleben N, Egerup P, Hviid KVR, Severinsen ER, Kolte AM, Westergaard D, Fich Olsen L, Prætorius L, Zedeler A, Christiansen AMH, Nielsen JR, Bang D, Berntsen S, Ollé-López J, Ingham A, Bello-Rodríguez J, Storm DM, Ethelberg-Findsen J, Hoffmann ER, Wilken-Jensen C, Jørgensen FS, Westh H, Jørgensen HL, Nielsen HS. SARS-CoV-2 in first trimester pregnancy: a cohort study. Hum Reprod 2021; 36:40-47. [PMID: 33145598 PMCID: PMC7665455 DOI: 10.1093/humrep/deaa311] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/16/2020] [Indexed: 12/22/2022] Open
Abstract
Study question Does maternal infection with SARS-CoV-2 in first trimester pregnancy have an impact on the fetal development as measured by nuchal translucency thickness and pregnancy loss? Summary answer Nuchal translucency thickness at the first trimester scan was not significantly different in pregnant women with versus without SARS-CoV-2 infection in early pregnancy and there was no significant increased risk of pregnancy loss in women with SARS-CoV-2 infection in the first trimester. What is known already Pregnant women are more vulnerable to viral infections. Previous coronavirus epidemics have been associated with increased maternal morbidity, mortality and adverse obstetric outcomes. Currently, no evidence exists regarding possible effects of SARS-CoV-2 in first trimester pregnancies. Study design, size, duration Cohort study of 1,019 women with a double test taken between Feb. 17 and Apr. 23, 2020, as a part of the combined first trimester risk assessment, and 36 women with a first trimester pregnancy loss between Apr. 14 and May 21, 2020, prior to the double test. The study period was during the first SARS-CoV-2 epidemic wave in Denmark. Participants/materials, setting, methods Cohort 1 included pregnant women with a double test taken within the study period. The excess serum from each double test was analyzed for SARS-CoV-2 antibodies. Results were correlated to the nuchal translucency thickness and the number of pregnancy losses before or at the time of the first trimester scan. Cohort 2 included women with a pregnancy loss before the gestational age for double test sample. Serum from a blood test taken the day the pregnancy loss was identified was analyzed for SARS-CoV-2 antibodies. The study was conducted at a public university hospital serving approximately 12% of pregnant women and births in Denmark. All participants in the study provided written informed consent. Main results and the role of chance Eighteen (1.8%) women had SARS-CoV-2 antibodies in the serum from the double test suggestive of SARS-CoV-2 infection in early pregnancy. There was no significant difference in nuchal translucency thickness for women testing positive for previous SARS-CoV-2 infection (n = 18) versus negative (n = 994) (p = 0.62). There was no significant increased risk of pregnancy loss for women with positive antibodies (n = 1) (OR 3.4, 0.08-24.3 95% CI, p = 0.27). None of the women had been hospitalized due to SARS-CoV-2 infection. None of the women with pregnancy loss prior to the double test (Cohort 2) had SARS-CoV-2 antibodies. Limitations, reasons for caution These results may only apply to similar populations and to patients who do not require hospitalization due to SARS-CoV-2 infection. A limitation of the study is that only 1.8% of the study population had SARS-CoV-2 antibodies suggestive of previous infection. Wider implication of the findings Maternal SARS-CoV-2 infection had no effect on the nuchal translucency thickness and there was no significant increased risk of pregnancy loss for women with SARS-CoV-2 infection in first trimester pregnancy. Evidence concerning Covid-19 in pregnancy is still limited. These data indicate that infection with SARS-CoV-2 in not hospitalized women does not pose a significant threat in first trimester pregnancies. Follow up studies are needed to establish any risk to a fetus exposed to maternal SARS-CoV-2 infection. Study funding/competing interest(s) Prof. Henriette Svarre Nielsen (HSN) and colleagues received a grant from the Danish Government for research of Covid-19 among pregnant women. The Danish government was not involved in the study design, data collection, analysis, interpretation of data, writing of the report or decision to submit the paper for publication. AI, JOL, JBR, DMS, JEF, and ERH received funding from a Novo Nordisk Foundation (NNF) Young Investigator Grant (NNF15OC0016662) and a Danish National Science Foundation Center Grant (6110-00344B). AI received a Novo Scholarship. JOL is funded by an NNF Pregraduate Fellowship (NNF19OC0058982). DW is funded by the NNF (NNF18SA0034956, NNF14CC0001, NNF17OC0027594). AMK is funded by a grant from the Rigshospitalet’s research fund. Henriette Svarre Nielsen has received speakeŕs fees from Ferring Pharmaceuticals, Merck Denmark A/S and Ibsa Nordic (outside the submitted work). Nina la Cour Freiesleben has received a grant from Gedeon Richter (outside the submitted work). Astrid Marie Kolte has received speakeŕs from Merck (outside the submitted work). The other authors did not report any potential conflicts of interest.
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Affiliation(s)
- N la Cour Freiesleben
- Department of Obstetrics and Gynaecology, The Fertility Clinic, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark.,Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - P Egerup
- Department of Obstetrics and Gynaecology, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark
| | - K V R Hviid
- Department of Obstetrics and Gynaecology, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark
| | - E R Severinsen
- Department of Obstetrics and Gynaecology, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark
| | - A M Kolte
- Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark.,The Recurrent Pregnancy Loss Unit, The Capital Region, Copenhagen University Hospitals Rigshospitalet & Hvidovre Hospital, Denmark
| | - D Westergaard
- Department of Obstetrics and Gynaecology, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark.,Novo Nordisk Foundation Center for Protein Research, University of Copenhagen, DK-2200 Copenhagen, Denmark.,Methods and Analysis, Statistics Denmark, DK-2100, Copenhagen, Denmark
| | - L Fich Olsen
- Department of Obstetrics and Gynaecology, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark
| | - L Prætorius
- Department of Obstetrics and Gynaecology, The Fertility Clinic, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark
| | - A Zedeler
- Department of Obstetrics and Gynaecology, The Fertility Clinic, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark
| | - A-M H Christiansen
- Department of Obstetrics and Gynaecology, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark
| | - J R Nielsen
- Department of Obstetrics and Gynaecology, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark
| | - D Bang
- Department of Clinical Microbiology, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark
| | - S Berntsen
- Department of Obstetrics and Gynaecology, The Fertility Clinic, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark
| | - J Ollé-López
- DNRF Center for Chromosome Stability (CCS), Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - A Ingham
- DNRF Center for Chromosome Stability (CCS), Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - J Bello-Rodríguez
- DNRF Center for Chromosome Stability (CCS), Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - D M Storm
- DNRF Center for Chromosome Stability (CCS), Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - J Ethelberg-Findsen
- DNRF Center for Chromosome Stability (CCS), Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - E R Hoffmann
- DNRF Center for Chromosome Stability (CCS), Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - C Wilken-Jensen
- Department of Obstetrics and Gynaecology, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark
| | - F S Jørgensen
- Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark.,Fetal Medicine Unit, Department of Obstetrics and Gynaecology, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark
| | - H Westh
- Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark.,Department of Clinical Microbiology, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark
| | - H L Jørgensen
- Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark.,Department of Clinical Biochemistry, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark
| | - H S Nielsen
- Department of Obstetrics and Gynaecology, The Fertility Clinic, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark.,Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark.,Department of Obstetrics and Gynaecology, Copenhagen University Hospital Hvidovre, DK-2650 Hvidovre, Denmark.,The Recurrent Pregnancy Loss Unit, The Capital Region, Copenhagen University Hospitals Rigshospitalet & Hvidovre Hospital, Denmark
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5
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Madden S, Collett D, Walton P, Empson K, Forsythe J, Ingham A, Morgan K, Murphy P, Neuberger J, Gardiner D. The effect on consent rates for deceased organ donation in Wales after the introduction of an opt-out system. Anaesthesia 2020; 75:1146-1152. [PMID: 32372409 PMCID: PMC7496553 DOI: 10.1111/anae.15055] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/16/2020] [Indexed: 01/19/2023]
Abstract
Organ transplantation saves and transforms lives. Failure to secure consent for organ retrieval is widely regarded as the single most important obstacle to transplantation. A soft opt‐out system of consent for deceased organ donation was introduced into Wales in December 2015, whilst England maintained the existing opt‐in system. Cumulative data on consent rates in Wales were compared with those in England, using a two‐sided sequential procedure that was powered to detect an absolute difference in consent rates between England and Wales of 10%. Supplementary risk‐adjusted logistic regression analysis examined whether any difference in consent rates between the two nations could be attributed to variations in factors known to influence UK consent rates. Between 1 January 2016 and 31 December 2018, 8192 families of eligible donors in England and 474 in Wales were approached regarding organ donation, with overall consent rates of 65% and 68%, respectively. There was a steady upward trend in the proportion of families consenting to donation after brain death in Wales as compared with England and after 33 months, this reached statistical significance. No evidence of any change in the donation after circulatory death consent rate was observed. Risk‐adjusted logistic regression analysis revealed that by the end of the study period the probability of consent to organ donation in Wales was higher than in England (OR [95%CI] 2.1 [1.26–3.41]). The introduction of a soft opt‐out system of consent in Wales significantly increased organ donation consent though the impact was not immediate.
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Affiliation(s)
- S Madden
- NHS Blood and Transplant, Bristol, UK
| | - D Collett
- NHS Blood and Transplant, Bristol, UK
| | - P Walton
- NHS Blood and Transplant, Bristol, UK
| | - K Empson
- Cardiff and Vale University Health Board, Cardiff, UK
| | | | - A Ingham
- Betsi Cadwaladr University Health Board, Bangor, UK
| | - K Morgan
- Public Health Wales, Cardiff, UK
| | - P Murphy
- Leeds Teaching Hospitals NHS Trust, Leeds, UK
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Pladevall-Morera D, Munk S, Ingham A, Garribba L, Albers E, Liu Y, Olsen JV, Lopez-Contreras AJ. Proteomic characterization of chromosomal common fragile site (CFS)-associated proteins uncovers ATRX as a regulator of CFS stability. Nucleic Acids Res 2019; 47:8004-8018. [PMID: 31180492 PMCID: PMC6735892 DOI: 10.1093/nar/gkz510] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [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: 12/18/2018] [Revised: 05/27/2019] [Accepted: 05/30/2019] [Indexed: 01/31/2023] Open
Abstract
Common fragile sites (CFSs) are conserved genomic regions prone to break under conditions of replication stress (RS). Thus, CFSs are hotspots for rearrangements in cancer and contribute to its chromosomal instability. Here, we have performed a global analysis of proteins that recruit to CFSs upon mild RS to identify novel players in CFS stability. To this end, we performed Chromatin Immunoprecipitation (ChIP) of FANCD2, a protein that localizes specifically to CFSs in G2/M, coupled to mass spectrometry to acquire a CFS interactome. Our strategy was validated by the enrichment of many known regulators of CFS maintenance, including Fanconi Anemia, DNA repair and replication proteins. Among the proteins identified with unknown functions at CFSs was the chromatin remodeler ATRX. Here we demonstrate that ATRX forms foci at a fraction of CFSs upon RS, and that ATRX depletion increases the occurrence of chromosomal breaks, a phenotype further exacerbated under mild RS conditions. Accordingly, ATRX depletion increases the number of 53BP1 bodies and micronuclei, overall indicating that ATRX is required for CFS stability. Overall, our study provides the first proteomic characterization of CFSs as a valuable resource for the identification of novel regulators of CFS stability.
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Affiliation(s)
- David Pladevall-Morera
- Department of Cellular and Molecular Medicine, Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, Copenhagen 2200, Denmark
| | - Stephanie Munk
- Department of Cellular and Molecular Medicine, Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, Copenhagen 2200, Denmark.,Proteomics Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Andreas Ingham
- Department of Cellular and Molecular Medicine, Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, Copenhagen 2200, Denmark
| | - Lorenza Garribba
- Department of Cellular and Molecular Medicine, Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, Copenhagen 2200, Denmark
| | - Eliene Albers
- Department of Cellular and Molecular Medicine, Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, Copenhagen 2200, Denmark
| | - Ying Liu
- Department of Cellular and Molecular Medicine, Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, Copenhagen 2200, Denmark
| | - Jesper V Olsen
- Proteomics Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Andres J Lopez-Contreras
- Department of Cellular and Molecular Medicine, Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, Copenhagen 2200, Denmark
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Pladevall-Morera D, Munk S, Ingham A, Garribba L, Albers E, Liu Y, Olsen JV, Lopez-Contreras AJ. Proteomic characterization of chromosomal common fragile site (CFS)-associated proteins uncovers ATRX as a regulator of CFS stability. Nucleic Acids Res 2019; 47:8332. [PMID: 31269211 PMCID: PMC6736055 DOI: 10.1093/nar/gkz591] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- David Pladevall-Morera
- Department of Cellular and Molecular Medicine, Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, Copenhagen 2200, Denmark
| | - Stephanie Munk
- Department of Cellular and Molecular Medicine, Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, Copenhagen 2200, Denmark.,Proteomics Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Andreas Ingham
- Department of Cellular and Molecular Medicine, Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, Copenhagen 2200, Denmark
| | - Lorenza Garribba
- Department of Cellular and Molecular Medicine, Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, Copenhagen 2200, Denmark
| | - Eliene Albers
- Department of Cellular and Molecular Medicine, Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, Copenhagen 2200, Denmark
| | - Ying Liu
- Department of Cellular and Molecular Medicine, Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, Copenhagen 2200, Denmark
| | - Jesper V Olsen
- Proteomics Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Andres J Lopez-Contreras
- Department of Cellular and Molecular Medicine, Center for Chromosome Stability and Center for Healthy Aging, University of Copenhagen, Copenhagen 2200, Denmark
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Ning H, Zhang Y, Zhu H, Ingham A, Huang G, Mei Y, Solovev AA. Geometry Design, Principles and Assembly of Micromotors. Micromachines (Basel) 2018; 9:E75. [PMID: 30393351 PMCID: PMC6187850 DOI: 10.3390/mi9020075] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 02/06/2018] [Accepted: 02/07/2018] [Indexed: 01/19/2023]
Abstract
Discovery of bio-inspired, self-propelled and externally-powered nano-/micro-motors, rotors and engines (micromachines) is considered a potentially revolutionary paradigm in nanoscience. Nature knows how to combine different elements together in a fluidic state for intelligent design of nano-/micro-machines, which operate by pumping, stirring, and diffusion of their internal components. Taking inspirations from nature, scientists endeavor to develop the best materials, geometries, and conditions for self-propelled motion, and to better understand their mechanisms of motion and interactions. Today, microfluidic technology offers considerable advantages for the next generation of biomimetic particles, droplets and capsules. This review summarizes recent achievements in the field of nano-/micromotors, and methods of their external control and collective behaviors, which may stimulate new ideas for a broad range of applications.
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Affiliation(s)
- Huanpo Ning
- Department of Materials Science, Fudan University, 220 Handan Road, 200433 Shanghai, China.
| | - Yan Zhang
- Department of Materials Science, Fudan University, 220 Handan Road, 200433 Shanghai, China.
| | - Hong Zhu
- Department of Materials Science, Fudan University, 220 Handan Road, 200433 Shanghai, China.
| | - Andreas Ingham
- Department of Biology, University of Copenhagen, 5 Ole Maaløes Vej, DK-2200, 1165 København, Denmark.
| | - Gaoshan Huang
- Department of Materials Science, Fudan University, 220 Handan Road, 200433 Shanghai, China.
| | - Yongfeng Mei
- Department of Materials Science, Fudan University, 220 Handan Road, 200433 Shanghai, China.
| | - Alexander A Solovev
- Department of Materials Science, Fudan University, 220 Handan Road, 200433 Shanghai, China.
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Davies J, Ingham A. An in-vitro-in-vivo model for the transdermal delivery of cholecalciferol for the purposes of rodent management. Int J Pharm 2015; 487:101-9. [PMID: 25835266 PMCID: PMC4441109 DOI: 10.1016/j.ijpharm.2015.03.055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Revised: 03/24/2015] [Accepted: 03/27/2015] [Indexed: 11/17/2022]
Abstract
The natural selection of anticoagulant resistant rats has resulted in a need for an alternative to anticoagulant rodenticides which differs in both active ingredient and in the method of dosing. Cholecalciferol toxicity to rodents using the dermal route is demonstrated using a variety of penetration enhancing formulations in two in-vitro models and finally in-vivo. A 1 ml dose of 50/50 (v/v) DMSO/ethanol containing 15% (v/v) PEG 200 and 20% (w/v) cholecalciferol was judged as 'sufficiently effective' in line with the European Union's Biocidal Products Regulation (No. 528/2012) during in-vivo studies. This dose was found to cause 100% mortality in a rat population in 64.4h (± 22h).
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Affiliation(s)
- J Davies
- School of Life and Health Sciences, Aston University, Aston Triangle, Birmingham B4 7ET, UK
| | - A Ingham
- School of Pharmacy, School of Life and Health Sciences, Aston University, Aston Triangle, Birmingham B4 7ET, UK.
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Menzies M, Reverter A, Andronicos N, Hunt P, Windon R, Ingham A. Nematode challenge induces differential expression of oxidant, antioxidant and mucous genes down the longitudinal axis of the sheep gut. Parasite Immunol 2010; 32:36-46. [PMID: 20042006 DOI: 10.1111/j.1365-3024.2009.01156.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
To characterize the role of a range of oxidant, antioxidant and mucous-related genes in the primary response to gastrointestinal nematodes, groups of genetically resistant sheep were challenged with either Haemonchus contortus or Trichostrongylus colubriformis and necropsied for retrieval of tissue at days 0, 3, 7, 14 and 21. To determine if the response was localized to the site of parasite infection, four different gut tissues were sampled: the abomasum, proximal and distal jejunum and ileum. Basal expression patterns of all candidate genes were determined using the day 0 (pre-challenge) samples. A conserved innate response involving elevated expression of dual oxidase, glutathione peroxidase and trefoil factor was initiated within 3 days of challenge and extended out to 21 days. An increase in host gene expression levels at the preferred site of infection (the abomasum for H. contortus and the proximal jejunum for T. colubriformis) was also common to both nematodes. However, these increases were concomitant with reduced expression in other areas of the gut suggesting a compartmentalized response. Other aspects of the response were parasite-specific, with T. colubriformis challenge inducing expression peaks at times corresponding to nematode life-stage transitions.
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Affiliation(s)
- M Menzies
- CSIRO Livestock Industries, St Lucia, Qld 4067, Australia
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11
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Wang YH, Reverter A, Kemp D, McWilliam SM, Ingham A, Davis CA, Moore RJ, Lehnert SA. Gene expression profiling of Hereford Shorthorn cattle following challenge with Boophilus microplus tick larvae. ACTA ACUST UNITED AC 2007. [DOI: 10.1071/ea07012] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The ability of cattle to resist tick infestations is partly genetically determined. In order to better define the nature of Bos taurus resistance to the cattle tick Boophilus microplus, skin gene expression was studied using a cattle skin derived cDNA microarray. Expression profiles were determined in skin biopsies sampled from three highly tick resistant animals (HR) and two animals with lower tick resistance (LR) at time 0, immediately before challenge, and again 24 h after challenge. The analysis of the resulting expression data addressed two biological questions: first, for any animal exposed to ticks, which genes are differentially expressed in the 24 h following challenge; and second, which genes are differentially expressed between animals of high and low resistance at 24 h after challenge? In total, 214 genes were found to be differentially expressed in response to larval challenge across all the animals. Seventy-two genes were upregulated and 76 were downregulated at 24 h after challenge. Genes with significantly altered gene expression levels following tick infestation were predominantly keratin genes or mitochondrial genes, as well as odorant binding protein (OBP) and Bos taurus major allergen BDA20. In addition, we identified 66 genes with differential expression between HR and LR animals at 24 h. Of these, genes representing the extracellular matrix and immunoglobulin gene expression pathways were overrepresented. Three differentially expressed genes, OBP, Bos taurus major allergen BDA20 and dendritic cell protein HFL-B5 were further analysed by quantitative reverse transcription PCR (qRT-PCR). The qRT-PCR assay results closely mirrored the expression profiles found in the microarray experiment.
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Abstract
Experiments that aim to identify genes of importance in sheep are currently inhibited by a paucity of genomic resources. One approach, therefore, is to exploit the wealth of data and associated capabilities becoming available for the bovine genome. Cross-species application of microarrays and comparative sequencing to identify single nucleotide polymorphisms are two possibilities; however, both are dependant on the level of nucleotide sequence similarity between the two species. This study used 120 gene orthologues consisting of over 60 kb of aligned sequence to estimate the gene diversity between cattle and sheep. Less than 3% of protein-coding nucleotide positions were found to be different, indicating that the prospect for successfully using cross-species strategies is high. Substitution at synonymous sites ranged between 6.9 and 7.7% (+/- 0.3%), and was higher than at non-synonymous sites (1.4-1.7 +/- 0.1%). The relative rate test was used to determine whether the observed mutation rates were constant between the two lineages. While the rate at synonymous sites appeared constant, the rate at non-synonymous sites was significantly higher within the caprinae lineage (sheep) when compared with bovinae (cattle; chi2 = 10.03; d.f. = 1, P < 0.01). This is the first demonstration that variable rates of molecular evolution may be present within the family Bovidae.
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Affiliation(s)
- J W Kijas
- CSIRO Livestock Industries, Level 5 Queensland Bioscience Precinct, 306 Carmody Road, St Lucia 4067, Australia.
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Abstract
Type 4 fimbriae have been identified on the cell surface of Actinobacillus pleuropneumoniae by electron microscopy and N-terminal sequencing analysis. A. pleuropneumoniae type 4 fimbrial subunit protein, purified from cell cultures and from outer membrane preparations, reacted with polyclonal antibody raised against type 4 fimbriae of Moraxella bovis on Western blots. N-terminal sequence analysis of the purified 17 kDa type 4 fimbrial subunit protein, named ApfA, revealed the first 12 amino acids to be identical to those of other type 4 fimbrial subunit proteins.
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Affiliation(s)
- Y Zhang
- CSIRO Animal Health, Australian Animal Health Laboratory, Private Bag 24, 3220, Geelong, Vic., Australia.
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Abstract
This literature review is an exploration of the available literature on and surrounding the subject of touch in order to help nurses to understand this subject and use touch effectively in nursing care. The study is focused particularly on the use of touch in intensive care as this is the area of interest of the author, and several writers have suggested touch is of great importance in this area. The literature on communication in all its forms and particularly in intensive care is discussed first as this explains the framework in which touch occurs and how it fits into nursing care. Theories about touch and studies of the use of touch are linked to try to show the human need, and taboos about touch. This is related to the use of touch by nurses and other health care workers particularly in intensive care. Recommendations are made, from the information gained from the literature, about how nurses' use of touch as part of nursing care can be improved.
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Ingham A. The psychological response of patients to admission to coronary care for heart disease, and its' effects on rehabilitation. Intensive Care Nurs 1988; 4:24-33. [PMID: 3351277 DOI: 10.1016/0266-612x(88)90020-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Ingham A, Tietz R. Aspiration Levels in Bargaining and Economic Decision Making. J R Stat Soc Ser C Appl Stat 1984. [DOI: 10.2307/2347718] [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: 11/10/2022]
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Carwardine PC, Ingham A. Metronidazole and melanoma. Vet Rec 1978; 102:110-1. [PMID: 636252 DOI: 10.1136/vr.102.5.110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Ingham A. Immune Suppression, Gliomas, and Tuberculosis. West J Med 1972. [DOI: 10.1136/bmj.1.5796.375-c] [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: 11/04/2022]
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