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Barnes MVC, Pantazi P, Holder B. Circulating extracellular vesicles in healthy and pathological pregnancies: A scoping review of methodology, rigour and results. J Extracell Vesicles 2023; 12:e12377. [PMID: 37974377 PMCID: PMC10654380 DOI: 10.1002/jev2.12377] [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: 05/05/2023] [Revised: 09/27/2023] [Accepted: 10/16/2023] [Indexed: 11/19/2023] Open
Abstract
Extracellular vesicles (EVs) play a crucial role in pregnancy, revealed by the presence of placental-derived EVs in maternal blood, their in vitro functionality, and their altered cargo in pregnancy pathologies. These EVs are thought to be involved in the development of pregnancy pathologies, such as pre-eclampsia, pre-term birth, and fetal growth restriction, and have been suggested as a source of biomarkers for gestational diseases. However, to accurately interpret their function and biomarker potential, it is necessary to critically evaluate the EV isolation and characterization methodologies used in pregnant cohorts. In this systematic scoping review, we collated the results from 152 studies that have investigated EVs in the blood of pregnant women, and provide a detailed analysis of the EV isolation and characterization methodologies used. Our findings indicate an overall increase in EV concentrations in pregnant compared to non-pregnant individuals, an increased EV count as gestation progresses, and an increased EV count in some pregnancy pathologies. We highlight the need for improved standardization of methodology, greater focus on gestational changes in EV concentrations, and further investigations into the functionality of EVs. Our review suggests that EVs hold great promise as diagnostic and translational tools for gestational diseases. However, to fully realize their potential, it is crucial to improve the standardization and reliability of EV isolation and characterization methodologies, and to gain a better understanding of their functional roles in pregnancy pathologies.
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Affiliation(s)
- Megan V. C. Barnes
- Institute of Reproductive and Developmental Biology, Department of MetabolismDigestion and Reproduction, Imperial College LondonLondonUK
| | - Paschalia Pantazi
- Institute of Reproductive and Developmental Biology, Department of MetabolismDigestion and Reproduction, Imperial College LondonLondonUK
| | - Beth Holder
- Institute of Reproductive and Developmental Biology, Department of MetabolismDigestion and Reproduction, Imperial College LondonLondonUK
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Pantazi P, Clements T, Venø M, Abrahams VM, Holder B. Distinct non-coding RNA cargo of extracellular vesicles from M1 and M2 human primary macrophages. J Extracell Vesicles 2022; 11:e12293. [PMID: 36544271 PMCID: PMC9772496 DOI: 10.1002/jev2.12293] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 07/16/2022] [Revised: 11/13/2022] [Accepted: 12/07/2022] [Indexed: 12/24/2022] Open
Abstract
Macrophages are important antigen presenting cells which can release extracellular vesicles (EVs) carrying functional cargo including non-coding RNAs. Macrophages can be broadly classified into M1 'classical' and M2 'alternatively-activated' macrophages. M1 macrophages have been linked with inflammation-associated pathologies, whereas a switch towards an M2 phenotype indicates resolution of inflammation and tissue regeneration. Here, we provide the first comprehensive analysis of the small RNA cargo of EVs from human M1 and M2 primary macrophages. Using small RNA sequencing, we identified several types of small non-coding RNAs in M1 and M2 macrophage EVs including miRNAs, isomiRs, tRNA fragments, piRNA, snRNA, snoRNA and Y-RNA fragments. Distinct differences were observed between M1 and M2 EVs, with higher relative abundance of miRNAs, and lower abundance of tRNA fragments in M1 compared to M2 EVs. MicroRNA-target enrichment analysis identified several gene targets involved in gene expression and inflammatory signalling pathways. EVs were also enriched in tRNA fragments, primarily originating from the 5' end or the internal region of the full length tRNAs, many of which were differentially abundant in M1 and M2 EVs. Similarly, several other small non-coding RNAs, namely snRNAs, snoRNAs and Y-RNA fragments, were differentially enriched in M1 and M2 EVs; we discuss their putative roles in macrophage EVs. In conclusion, we show that M1 and M2 macrophages release EVs with distinct RNA cargo, which has the potential to contribute to the unique effect of these cell subsets on their microenvironment.
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Affiliation(s)
- Paschalia Pantazi
- Institute of Reproductive and Developmental BiologyDepartment of Metabolism, Digestion, and ReproductionImperial College LondonLondonUK
| | - Toby Clements
- Institute of Reproductive and Developmental BiologyDepartment of Metabolism, Digestion, and ReproductionImperial College LondonLondonUK
| | | | - Vikki M. Abrahams
- Department of ObstetricsGynecology and Reproductive SciencesYale School of MedicineNew HavenConnecticutUSA
| | - Beth Holder
- Institute of Reproductive and Developmental BiologyDepartment of Metabolism, Digestion, and ReproductionImperial College LondonLondonUK
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Pantazi P, Kaforou M, Guller S, Tang Z, Clements T, Holder B. Characterization of extracellular vesicles from placental macrophages (Hofbauer cells) in normal physiology and infection. Placenta 2022. [DOI: 10.1016/j.placenta.2022.03.023] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Fakonti G, Pantazi P, Bokun V, Holder B. Placental Macrophage (Hofbauer Cell) Responses to Infection During Pregnancy: A Systematic Scoping Review. Front Immunol 2022; 12:756035. [PMID: 35250964 PMCID: PMC8895398 DOI: 10.3389/fimmu.2021.756035] [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: 08/09/2021] [Accepted: 11/30/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Congenital infection of the fetus via trans-placental passage of pathogens can result in severe morbidity and mortality. Even without transmission to the fetus, infection of the placenta itself is associated with pregnancy complications including pregnancy loss and preterm birth. Placental macrophages, also termed Hofbauer cells (HBCs), are fetal-origin macrophages residing in the placenta that are likely involved in responding to placental infection and protection of the developing fetus. As HBCs are the only immune cell present in the villous placenta, they represent one of the final opportunities for control of infection and prevention of passage to the developing fetus. OBJECTIVE AND RATIONALE The objective of this review was to provide a systematic overview of the literature regarding HBC responses during infection in pregnancy, including responses to viral, bacterial, and parasitic pathogens. METHODS PubMed and Scopus were searched on May 20th, 2021, with no limit on publication date, to identify all papers that have studied placental macrophages/Hofbauer cells in the context of infection. The following search strategy was utilized: (hofbauer* OR "hofbauer cells" OR "hofbauer cell" OR "placental macrophage" OR "placental macrophages") AND [infect* OR virus OR viral OR bacteri* OR parasite* OR pathogen* OR LPS OR "poly(i:c)" OR toxoplasm* OR microb* OR HIV)]. OUTCOMES 86 studies were identified for review. This included those that investigated HBCs in placentas from pregnancies complicated by maternal infection and in vitro studies investigating HBC responses to pathogens or Pathogen-Associated Molecular Patterns (PAMPs). HBCs can be infected by a variety of pathogens, and HBC hyperplasia was a common observation. HBCs respond to pathogen infection and PAMPs by altering their transcriptional, translational and secretion profiles. Co-culture investigations demonstrate that they can replicate and transmit pathogens to other cells. In other cases, they may eliminate the pathogen through a variety of mechanisms including phagocytosis, cytokine-mediated pathogen elimination, release of macrophage extracellular traps and HBC-antibody-mediated neutralization. HBC responses differ across gestation and may be influenced by pre-existing immunity. Clinical information, including gestational age at infection, gestational age of the samples, mode of sample collection and pregnancy outcome were missing for the majority of studies.
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Affiliation(s)
| | | | | | - Beth Holder
- Institute of Reproductive and Developmental Biology, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
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Yates AG, Pink RC, Erdbrügger U, Siljander PRM, Dellar ER, Pantazi P, Akbar N, Cooke WR, Vatish M, Dias-Neto E, Anthony DC, Couch Y. In sickness and in health: The functional role of extracellular vesicles in physiology and pathology in vivo: Part I: Health and Normal Physiology: Part I: Health and Normal Physiology. J Extracell Vesicles 2022; 11:e12151. [PMID: 35041249 PMCID: PMC8765331 DOI: 10.1002/jev2.12151] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [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: 06/24/2021] [Revised: 09/03/2021] [Accepted: 09/15/2021] [Indexed: 12/16/2022] Open
Abstract
Previously thought to be nothing more than cellular debris, extracellular vesicles (EVs) are now known to mediate physiological and pathological functions throughout the body. We now understand more about their capacity to transfer nucleic acids and proteins between distant organs, the interaction of their surface proteins with target cells, and the role of vesicle‐bound lipids in health and disease. To date, most observations have been made in reductionist cell culture systems, or as snapshots from patient cohorts. The heterogenous population of vesicles produced in vivo likely act in concert to mediate both beneficial and detrimental effects. EVs play crucial roles in both the pathogenesis of diseases, from cancer to neurodegenerative disease, as well as in the maintenance of system and organ homeostasis. This two‐part review draws on the expertise of researchers working in the field of EV biology and aims to cover the functional role of EVs in physiology and pathology. Part I will outline the role of EVs in normal physiology.
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Affiliation(s)
- Abi G Yates
- Department of Pharmacology, University of Oxford, Oxford, UK.,School of Biomedical Sciences, Faculty of Medicine, University of Queensland, St Lucia, Australia
| | - Ryan C Pink
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Headington Campus, Oxford, UK
| | - Uta Erdbrügger
- Department of Medicine, Division of Nephrology, University of Virginia, Charlottesville, Virginia, USA
| | - Pia R-M Siljander
- Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Elizabeth R Dellar
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Headington Campus, Oxford, UK
| | - Paschalia Pantazi
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Headington Campus, Oxford, UK
| | - Naveed Akbar
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - William R Cooke
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, UK
| | - Manu Vatish
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, UK
| | - Emmanuel Dias-Neto
- Laboratory of Medical Genomics. A.C. Camargo Cancer Centre, São Paulo, Brazil.,Laboratory of Neurosciences (LIM-27) Institute of Psychiatry, São Paulo Medical School, São Paulo, Brazil
| | | | - Yvonne Couch
- Acute Stroke Programme - Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford, UK
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Melling GE, Conlon R, Pantazi P, Dellar ER, Samuel P, Baena-Lopez LA, Simpson JC, Carter DRF. Confocal microscopy analysis reveals that only a small proportion of extracellular vesicles are successfully labelled with commonly utilised staining methods. Sci Rep 2022; 12:262. [PMID: 34997141 PMCID: PMC8741769 DOI: 10.1038/s41598-021-04225-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 07/07/2021] [Accepted: 11/24/2021] [Indexed: 12/14/2022] Open
Abstract
Assessing genuine extracellular vesicle (EV) uptake is crucial for understanding the functional roles of EVs. This study measured the bona fide labelling of EVs utilising two commonly used fluorescent dyes, PKH26 and C5-maleimide-Alexa633. MCF7 EVs tagged with mEmerald-CD81 were isolated from conditioned media by size exclusion chromatography (SEC) and characterised using Nanoparticle Tracking Analysis (NTA), Transmission Electron Microscopy (TEM), MACsPlex immunocapture assay and immunoblots. These fluorescently tagged EVs were subsequently stained with C5-maleimide-Alexa633 or PKH26, according to published protocols. Colocalisation of dual-labelled EVs was assessed by confocal microscopy and quantified using the Rank-Weighted Colocalisation (RWC) algorithm. We observed strikingly poor colocalisation between mEmerald-CD81-tagged EVs and C5-Maleimide-Alexa633 (5.4% ± 1.8) or PKH26 (4.6% ± 1.6), that remained low even when serum was removed from preparations. Our data confirms previous work showing that some dyes form contaminating aggregates. Furthermore, uptake studies showed that maleimide and mEmerald-CD81-tagged EVs can be often located into non-overlapping subcellular locations. By using common methods to isolate and stain EVs we observed that most EVs remained unstained and most dye signal does not appear to be EV associated. Our work shows that there is an urgent need for optimisation and standardisation in how EV researchers use these tools to assess genuine EV signals.
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Affiliation(s)
- Genevieve E Melling
- Department of Biological and Medical Sciences, Oxford Brookes University, Gipsy Lane, Oxford, OX3 0BP, UK
- Institute of Clinical Sciences, School of Biomedical Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Ross Conlon
- Cell Screening Laboratory, School of Biology and Environmental Science, University College Dublin, Science Centre West, Belfield, Dublin 4, Ireland
| | - Paschalia Pantazi
- Department of Biological and Medical Sciences, Oxford Brookes University, Gipsy Lane, Oxford, OX3 0BP, UK
- Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Campus, London, UK
| | - Elizabeth R Dellar
- Department of Biological and Medical Sciences, Oxford Brookes University, Gipsy Lane, Oxford, OX3 0BP, UK
- Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford, OX1 3RE, UK
| | - Priya Samuel
- Department of Biological and Medical Sciences, Oxford Brookes University, Gipsy Lane, Oxford, OX3 0BP, UK
| | - Luis Alberto Baena-Lopez
- Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford, OX1 3RE, UK
| | - Jeremy C Simpson
- Cell Screening Laboratory, School of Biology and Environmental Science, University College Dublin, Science Centre West, Belfield, Dublin 4, Ireland.
| | - David R F Carter
- Department of Biological and Medical Sciences, Oxford Brookes University, Gipsy Lane, Oxford, OX3 0BP, UK.
- Evox Therapeutics Ltd, Oxford Science Park, Medawar Centre, Robert Robinson Avenue, Oxford, OX4 4HG, UK.
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Yates AG, Pink RC, Erdbrügger U, Siljander PR, Dellar ER, Pantazi P, Akbar N, Cooke WR, Vatish M, Dias‐Neto E, Anthony DC, Couch Y. In sickness and in health: The functional role of extracellular vesicles in physiology and pathology in vivo: Part II: Pathology: Part II: Pathology. J Extracell Vesicles 2022; 11:e12190. [PMID: 35041301 PMCID: PMC8765328 DOI: 10.1002/jev2.12190] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [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: 06/24/2021] [Revised: 09/03/2021] [Accepted: 09/15/2021] [Indexed: 02/06/2023] Open
Abstract
It is clear from Part I of this series that extracellular vesicles (EVs) play a critical role in maintaining the homeostasis of most, if not all, normal physiological systems. However, the majority of our knowledge about EV signalling has come from studying them in disease. Indeed, EVs have consistently been associated with propagating disease pathophysiology. The analysis of EVs in biofluids, obtained in the clinic, has been an essential of the work to improve our understanding of their role in disease. However, to interfere with EV signalling for therapeutic gain, a more fundamental understanding of the mechanisms by which they contribute to pathogenic processes is required. Only by discovering how the EV populations in different biofluids change-size, number, and physicochemical composition-in clinical samples, may we then begin to unravel their functional roles in translational models in vitro and in vivo, which can then feedback to the clinic. In Part II of this review series, the functional role of EVs in pathology and disease will be discussed, with a focus on in vivo evidence and their potential to be used as both biomarkers and points of therapeutic intervention.
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Affiliation(s)
- Abi G. Yates
- Department of PharmacologyUniversity of OxfordOxfordUK
- School of Biomedical SciencesFaculty of MedicineUniversity of QueenslandSt LuciaAustralia
| | - Ryan C. Pink
- Department of Biological and Medical SciencesFaculty of Health and Life SciencesOxford Brookes UniversityOxfordUK
| | - Uta Erdbrügger
- Department of Medicine, Division of NephrologyUniversity of VirginiaCharlottesvilleVirginiaUSA
| | - Pia R‐M. Siljander
- Molecular and Integrative Biosciences Research ProgrammeFaculty of Biological and Environmental SciencesUniversity of HelsinkiHelsinkiFinland
| | - Elizabeth R. Dellar
- Department of Biological and Medical SciencesFaculty of Health and Life SciencesOxford Brookes UniversityOxfordUK
| | - Paschalia Pantazi
- Department of Biological and Medical SciencesFaculty of Health and Life SciencesOxford Brookes UniversityOxfordUK
| | - Naveed Akbar
- Division of Cardiovascular Medicine, Radcliffe Department of MedicineUniversity of OxfordOxfordUK
| | - William R. Cooke
- Nuffield Department of Women's and Reproductive HealthJohn Radcliffe Hospital, HeadingtonOxfordUK
| | - Manu Vatish
- Nuffield Department of Women's and Reproductive HealthJohn Radcliffe Hospital, HeadingtonOxfordUK
| | - Emmanuel Dias‐Neto
- Laboratory of Medical Genomics. A.C. Camargo Cancer CentreSão PauloBrazil
- Laboratory of Neurosciences (LIM‐27) Institute of PsychiatrySão Paulo Medical SchoolSão PauloBrazil
| | | | - Yvonne Couch
- Acute Stroke Programme ‐ Radcliffe Department of MedicineUniversity of OxfordOxfordUK
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Pantazi P, Carollo E, Carter DRF, Brooks SA. A practical toolkit to study aspects of the metastatic cascade in vitro. Acta Histochem 2020; 122:151654. [PMID: 33157489 DOI: 10.1016/j.acthis.2020.151654] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/23/2020] [Accepted: 10/28/2020] [Indexed: 12/30/2022]
Abstract
While metastasis - the spread of cancer from the primary location to distant sites in the body - remains the principle cause of cancer death, it is incompletely understood. It is a complex process, requiring the metastatically successful cancer cell to negotiate a formidable series of interconnected steps, which are described in this paper. For each step, we review the range of in vitro assays that may be used to study them. We also provide a range of detailed, step-by-step protocols that can be undertaken in most modestly-equipped laboratories, including methods for converting qualitative observations into quantitative data for analysis. Assays include: (1) a gelatin degradation assay to study the ability of endothelial cells to degrade extracellular matrix during tumour angiogenesis; (2) the morphological characterisation of cells undergoing epithelial-mesenchymal transition (EMT) as they acquire motility; (3) a 'scratch' or 'wound-healing' assay to study cancer cell migration; (4) a transwell assay to study cancer cell invasion through extracellular matrix; and (5) a static adhesion assay to examine cancer cell interactions with, and adhesion to, endothelial monolayers. This toolkit of protocols will enable researchers who are interested in metastasis to begin to focus on defined aspects of the process. It is only by further understanding this complex, fascinating and clinically relevant series of events that we may ultimately devise ways of better treating, or even preventing, cancer metastasis. The assays may also be of more broad interest to researchers interested in studying aspects of cellular behaviour in relation to other developmental and disease processes.
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Al-Khafaji ASK, Pantazi P, Acha-Sagredo A, Schache A, Risk JM, Shaw RJ, Liloglou T. Overexpression of HURP mRNA in head and neck carcinoma and association with in vitro response to vinorelbine. Oncol Lett 2020; 19:2502-2507. [PMID: 32194751 DOI: 10.3892/ol.2020.11339] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 11/06/2019] [Indexed: 12/24/2022] Open
Abstract
HURP gene encodes the hepatoma upregulated protein (HURP), a microtubule associated protein regulating mitotic spindle dynamics, which promotes chromosomal congression and alignment during mitosis, with a potential role in tumorigenesis. In the present study, HURP mRNA expression was investigated by reverse transcription-quantitative PCR in oropharyngeal squamous cell carcinoma (OPSCC). Primary OPSCC tumors from 107 patients and 48 adjacent normal tissues, as well as 12 respiratory tract cancer cell lines (9 head and neck squamous cell carcinoma, 2 lung cancer and 1 normal bronchial) were utilised in the present study. mRNA expression levels of HURP were higher in malignant OPSCC tissues compared with in normal mucosa (P<1×10-5) and significantly associated with sex and smoking status (P<0.0001). Vinorelbine in vitro toxicity at half-maximal inhibitory concentration (IC50) was measured in the 11 cancer cell lines using an MTT assay. Sensitivity to vinorelbine was significantly correlated with HURP expression (r=0.636; P=0.035). The data indicated that HURP overexpression is frequent in OPSCC tissues and associated with smoking. The correlation between HURP mRNA expression and vinorelbine in vitro response suggests that HURP is a potential modulator of vinorelbine response; therefore, it should be explored for its possible predictive value for the efficiency of vinorelbine treatment in this type of cancer.
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Affiliation(s)
- Ahmed S K Al-Khafaji
- Department of Biology, College of Science, University of Baghdad, Baghdad 10070, Iraq.,Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool L7 8TX, UK
| | - Paschalia Pantazi
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool L7 8TX, UK
| | - Amelia Acha-Sagredo
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool L7 8TX, UK
| | - Andrew Schache
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool L7 8TX, UK
| | - Janet M Risk
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool L7 8TX, UK
| | - Richard J Shaw
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool L7 8TX, UK
| | - Triantafillos Liloglou
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool L7 8TX, UK
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Acha-Sagredo A, Uko B, Pantazi P, Bediaga NG, Moschandrea C, Rainbow L, Marcus MW, Davies MPA, Field JK, Liloglou T. Long non-coding RNA dysregulation is a frequent event in non-small cell lung carcinoma pathogenesis. Br J Cancer 2020; 122:1050-1058. [PMID: 32020063 PMCID: PMC7109049 DOI: 10.1038/s41416-020-0742-9] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [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: 06/13/2019] [Revised: 12/16/2019] [Accepted: 01/15/2020] [Indexed: 12/25/2022] Open
Abstract
Background Long non-coding RNAs compose an important level of epigenetic regulation in normal physiology and disease. Despite the plethora of publications of lncRNAs in human cancer, the landscape is still unclear. Methods Microarray analysis in 44 NSCLC paired specimens was followed by qPCR-based validation in 29 (technical) and 38 (independent) tissue pairs. Cross-validation of the selected targets was achieved in 850 NSCLC tumours from TCGA datasets. Results Twelve targets were successfully validated by qPCR (upregulated: FEZF1-AS1, LINC01214, LINC00673, PCAT6, NUTM2A-AS1, LINC01929; downregulated: PCAT19, FENDRR, SVIL-AS1, LANCL1-AS1, ADAMTS9-AS2 and LINC00968). All of them were successfully cross validated in the TCGA datasets. Abnormal DNA methylation was observed in the promoters of FENDRR, FEZF1-AS1 and SVIL-AS1. FEZF1-AS1 and LINC01929 were associated with survival in the TCGA set. Conclusions Our study provides through multiple levels of internal and external validation, a comprehensive list of dysregulated lncRNAs in NSCLC. We therefore envisage this dataset to serve as an important source for the lung cancer research community assisting future investigations on the involvement of lncRNAs in the pathogenesis of the disease and providing novel biomarkers for diagnosis, prognosis and therapeutic stratification.
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Affiliation(s)
- Amelia Acha-Sagredo
- Roy Castle Lung Cancer Programme, Department of Molecular & Clinical Cancer Medicine, University of Liverpool, Liverpool, UK
| | - Bubaraye Uko
- Roy Castle Lung Cancer Programme, Department of Molecular & Clinical Cancer Medicine, University of Liverpool, Liverpool, UK
| | - Paschalia Pantazi
- Roy Castle Lung Cancer Programme, Department of Molecular & Clinical Cancer Medicine, University of Liverpool, Liverpool, UK.,Department of Surgery and Cancer, Institute of Reproductive and Developmental Biology (IRDB), Imperial College London, London, UK
| | - Naiara G Bediaga
- Roy Castle Lung Cancer Programme, Department of Molecular & Clinical Cancer Medicine, University of Liverpool, Liverpool, UK
| | - Chryssanthi Moschandrea
- Roy Castle Lung Cancer Programme, Department of Molecular & Clinical Cancer Medicine, University of Liverpool, Liverpool, UK
| | - Lucille Rainbow
- Centre for Genomic Research, Institute of Integrative Biology, University of Liverpool, Liverpool, UK
| | - Michael W Marcus
- Roy Castle Lung Cancer Programme, Department of Molecular & Clinical Cancer Medicine, University of Liverpool, Liverpool, UK
| | - Michael P A Davies
- Roy Castle Lung Cancer Programme, Department of Molecular & Clinical Cancer Medicine, University of Liverpool, Liverpool, UK
| | - John K Field
- Roy Castle Lung Cancer Programme, Department of Molecular & Clinical Cancer Medicine, University of Liverpool, Liverpool, UK
| | - Triantafillos Liloglou
- Roy Castle Lung Cancer Programme, Department of Molecular & Clinical Cancer Medicine, University of Liverpool, Liverpool, UK.
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Pantazi P, Carter D, Runions J, Brooks S. PO-193 The effect of chemotherapy induced intercellular communication on breast cancer metastasis. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.229] [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] Open
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Papaventsis D, Siafakas N, Kondyli L, Akritidou M, Pantazi P, Perdikari E, Bethimoutis G, Chatzakis G, Zerva L. Nocardia puris Endophthalmitis. Indian J Med Microbiol 2009; 27:168-70. [DOI: 10.4103/0255-0857.49438] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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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