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Neofytou AP, Neji R, Kowalik GT, Mooiweer R, Wong J, Fotaki A, Ferreira J, Evans C, Bosio F, Mughal N, Razavi R, Pushparajah K, Roujol S. Retrospective motion correction through multi-average k-space data elimination (REMAKE) for free-breathing cardiac cine imaging. Magn Reson Med 2023; 89:2242-2254. [PMID: 36763898 PMCID: PMC10952356 DOI: 10.1002/mrm.29613] [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: 10/06/2022] [Revised: 01/06/2023] [Accepted: 01/20/2023] [Indexed: 02/12/2023]
Abstract
PURPOSE To develop a motion-robust reconstruction technique for free-breathing cine imaging with multiple averages. METHOD Retrospective motion correction through multiple average k-space data elimination (REMAKE) was developed using iterative removal of k-space segments (from individual k-space samples) that contribute most to motion corruption while combining any remaining segments across multiple signal averages. A variant of REMAKE, termed REMAKE+, was developed to address any losses in SNR due to k-space information removal. With REMAKE+, multiple reconstructions using different initial conditions were performed, co-registered, and averaged. Both techniques were validated against clinical "standard" signal averaging reconstruction in a static phantom (with simulated motion) and 15 patients undergoing free-breathing cine imaging with multiple averages. Quantitative analysis of myocardial sharpness, blood/myocardial SNR, myocardial-blood contrast-to-noise ratio (CNR), as well as subjective assessment of image quality and rate of diagnostic quality images were performed. RESULTS In phantom, motion artifacts using "standard" (RMS error [RMSE]: 2.2 ± 0.5) were substantially reduced using REMAKE/REMAKE+ (RMSE: 1.5 ± 0.4/1.0 ± 0.4, p < 0.01). In patients, REMAKE/REMAKE+ led to higher myocardial sharpness (0.79 ± 0.09/0.79 ± 0.1 vs. 0.74 ± 0.12 for "standard", p = 0.004/0.04), higher image quality (1.8 ± 0.2/1.9 ± 0.2 vs. 1.6 ± 0.4 for "standard", p = 0.02/0.008), and a higher rate of diagnostic quality images (99%/100% vs. 94% for "standard"). Blood/myocardial SNR for "standard" (94 ± 30/33 ± 10) was higher vs. REMAKE (80 ± 25/28 ± 8, p = 0.002/0.005) and tended to be lower vs. REMAKE+ (105 ± 33/36 ± 12, p = 0.02/0.06). Myocardial-blood CNR for "standard" (61 ± 22) was higher vs. REMAKE (53 ± 19, p = 0.003) and lower vs. REMAKE+ (69 ± 24, p = 0.007). CONCLUSIONS Compared to "standard" signal averaging reconstruction, REMAKE and REMAKE+ provide improved myocardial sharpness, image quality, and rate of diagnostic quality images.
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Affiliation(s)
- Alexander Paul Neofytou
- School of Biomedical Engineering and Imaging Sciences, Faculty of Life Sciences and MedicineKing's College LondonLondonUK
| | - Radhouene Neji
- School of Biomedical Engineering and Imaging Sciences, Faculty of Life Sciences and MedicineKing's College LondonLondonUK
- MR Research CollaborationsSiemens Healthcare LimitedNewton House, Sir William Siemens Square, Frimley, CamberleySurreyUK
| | - Grzegorz Tomasz Kowalik
- School of Biomedical Engineering and Imaging Sciences, Faculty of Life Sciences and MedicineKing's College LondonLondonUK
| | - Ronald Mooiweer
- School of Biomedical Engineering and Imaging Sciences, Faculty of Life Sciences and MedicineKing's College LondonLondonUK
- MR Research CollaborationsSiemens Healthcare LimitedNewton House, Sir William Siemens Square, Frimley, CamberleySurreyUK
| | - James Wong
- Department of Paediatric CardiologyEvelina London Children's HospitalLondonUK
| | - Anastasia Fotaki
- School of Biomedical Engineering and Imaging Sciences, Faculty of Life Sciences and MedicineKing's College LondonLondonUK
| | - Joana Ferreira
- School of Biomedical Engineering and Imaging Sciences, Faculty of Life Sciences and MedicineKing's College LondonLondonUK
| | - Carl Evans
- School of Biomedical Engineering and Imaging Sciences, Faculty of Life Sciences and MedicineKing's College LondonLondonUK
| | - Filippo Bosio
- School of Biomedical Engineering and Imaging Sciences, Faculty of Life Sciences and MedicineKing's College LondonLondonUK
| | - Nabila Mughal
- School of Biomedical Engineering and Imaging Sciences, Faculty of Life Sciences and MedicineKing's College LondonLondonUK
| | - Reza Razavi
- School of Biomedical Engineering and Imaging Sciences, Faculty of Life Sciences and MedicineKing's College LondonLondonUK
| | - Kuberan Pushparajah
- School of Biomedical Engineering and Imaging Sciences, Faculty of Life Sciences and MedicineKing's College LondonLondonUK
- Department of Paediatric CardiologyEvelina London Children's HospitalLondonUK
| | - Sébastien Roujol
- School of Biomedical Engineering and Imaging Sciences, Faculty of Life Sciences and MedicineKing's College LondonLondonUK
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Preston NJ, McHugh GA, Hensor EMA, Grainger AJ, O’Connor PJ, Conaghan PG, Stone MH, Kingsbury SR. Feasibility testing of a standardised virtual clinic for follow-up of patients after hip and knee arthroplasty. Ann R Coll Surg Engl 2023; 105:252-262. [PMID: 35975843 PMCID: PMC9974348 DOI: 10.1308/rcsann.2021.0356] [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] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Over 200,000 hip and knee total joint arthroplasties (TJAs) are performed annually in England and Wales. UK guidelines recommend regular follow-up because missed early failure can result in complex revision surgery, which places additional burden on overstretched orthopaedic services. This study evaluated the feasibility and acceptability of an expert, consensus-based, standardised virtual clinic (VC) approach for TJA follow-up. METHODS Five UK secondary care orthopaedic centres implemented a standardised VC. Feedback was obtained through patient satisfaction questionnaires and telephone interviews with arthroplasty care practitioners. Key stakeholders subsequently attended an expert discussion forum to achieve consensus on the final VC format and to address obstacles identified during testing. RESULTS From 19 June 2018 to 11 December 2018, 561 TJA patients [mean age (SD) 70 (9.4) years, 57.8% female, 69.0% hip TJA, 1-28 years postsurgery (median 5 years)] completed a VC. Of these 561 patients, 82.2% were discharged without attending an outpatient appointment and 46 (8.8%) required early face-to-face consultant review. Patient satisfaction with the VC was high (156/188; 83.0%); over 70% of patients indicated a preference for the VC. DISCUSSION This feasibility study suggested significant resource savings, including time spent by consultant orthopaedic surgeons in outpatient clinics, hospital transport and an estimated saving of up to two-thirds of usual clinic-allotted time. The expert discussion forum provided helpful feedback for supporting more efficient implementation of the VC. CONCLUSIONS A standardised VC is a feasible alternative to outpatient clinics for the follow-up of hip and knee TJA patients, and is acceptable to key stakeholders, including patients.
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Affiliation(s)
- NJ Preston
- Leeds Institute of Rheumatic and Musculoskeletal Medicine,UK
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Hartmann‐Boyce J, Butler AR, Theodoulou A, Onakpoya IJ, Hajek P, Bullen C, Rigotti NA, Lindson N. Biomarkers of potential harm in people switching from smoking tobacco to exclusive e-cigarette use, dual use or abstinence: secondary analysis of Cochrane systematic review of trials of e-cigarettes for smoking cessation. Addiction 2023; 118:539-545. [PMID: 36208090 PMCID: PMC10092879 DOI: 10.1111/add.16063] [Citation(s) in RCA: 17] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 09/21/2022] [Indexed: 02/07/2023]
Abstract
AIMS This study aims to compare biomarkers of potential harm between people switching from smoking combustible cigarettes (CC) completely to electronic cigarettes (EC), continuing to smoke CC, using both EC and CC (dual users) and using neither (abstainers), based on behaviour during EC intervention studies. DESIGN Secondary analysis following systematic review, incorporating inverse variance random-effects meta-analysis and effect direction plots. SETTING This study was conducted in Greece, Italy, Poland, the United Kingdom and the United States. PARTICIPANTS A total of 1299 adults smoking CC (nine studies) and provided EC. MEASUREMENTS Measurements were conducted using carbon monoxide (CO) and 26 other biomarkers. FINDINGS In pooled analyses, exhaled CO (eCO) was lower in EC versus EC + CC [mean difference (MD) = -4.40 parts per million (p.p.m.), 95% confidence interval (CI) = -12.04 to 3.24, two studies] and CC (MD = -9.57 p.p.m., 95% CI = -17.30 to -1.83, three studies). eCO was lower in dual users versus CC only (MD = -1.91 p.p.m., 95% CI = -3.38 to -0.45, two studies). Magnitude rather than direction of effect drove substantial statistical heterogeneity. Effect direction plots were used for other biomarkers. Comparing EC with CC, 12 of 13 biomarkers were significantly lower in EC users, with no difference for the 13th. Comparing EC with dual users, 12 of the 25 biomarkers were lower for EC, and five were lower for dual use. For the remaining eight measures, single studies did not detect statistically significant differences, or the multiple studies contributing to the outcome had inconsistent results. Only one study provided data comparing dual use with CC; of the 13 biomarkers measured, 12 were significantly lower in the dual use group, with no statistically significant difference detected for the 13th. Only one study provided data on abstainers. CONCLUSIONS Switching from smoking to vaping or dual use appears to reduce levels of biomarkers of potential harm significantly.
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Affiliation(s)
| | - Ailsa R. Butler
- Nuffield Department of Primary Care Health SciencesUniversity of OxfordOxfordUK
| | - Annika Theodoulou
- Nuffield Department of Primary Care Health SciencesUniversity of OxfordOxfordUK
| | | | - Peter Hajek
- Wolfson Institute of Population Health, Barts & The London School of Medicine and DentistryQueen Mary University of LondonLondonUK
| | - Chris Bullen
- National Institute for Health InnovationUniversity of AucklandAucklandNew Zealand
| | - Nancy A. Rigotti
- Tobacco Research and Treatment Center, Department of MedicineMassachusetts General Hospital and Harvard Medical SchoolBostonMassachusettsUSA
| | - Nicola Lindson
- Nuffield Department of Primary Care Health SciencesUniversity of OxfordOxfordUK
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Ellis J, Kinsella K, James E, Cheetham‐Blake T, Lambrou M, Ciccognani A, Rogers A, Band R. Examining the optimal factors that promote implementation and sustainability of a network intervention to alleviate loneliness in community contexts. Health Soc Care Community 2022; 30:e4144-e4154. [PMID: 35470919 PMCID: PMC10084283 DOI: 10.1111/hsc.13808] [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] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 01/18/2022] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
Community environments have the potential to alleviate loneliness and social isolation as they offer opportunity for sociality and to expand personal social network connections. Implementing a social network intervention in community environments to connect people to who are at risk of loneliness or social isolation could help alleviate these concerns. However, implementing interventions in community environments is made difficult by the interplay between the community context and intervention. Thus, to support implementation a detailed understanding of the types of community contexts is required. To examine the optimal factors that promote the implementation of a social network designed to alleviate loneliness and social isolation intervention in the community observations, interviews and documentary analysis were conducted. The Consolidated Framework for Implementation Research and a typology of community contexts were used to inform the data analysis and interpret the findings. Key factors were found to affect the implementation of the intervention in the different community contexts. These inter-related factors operated across three domains. Service User Needs affected intervention take up as its suitability varied. The stability of the workforce and nature of everyday work also impacted on implementation. Finally, the fluctuating capacity of organisations and the organisational culture were also influential. No single community environment was found to have all of the optimal factors required for implementation and sustainably. The UK policy agenda of austerity had negatively affected community environments' capacity to deliver such intervention through increasing service user needs and reducing available resources. Trial registration: ISRCTN19193075.
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Affiliation(s)
- Jaimie Ellis
- School of Health SciencesUniversity of SouthamptonSouthamptonUK
| | - Karina Kinsella
- School of Health SciencesUniversity of SouthamptonSouthamptonUK
| | - Elizabeth James
- School of Health SciencesUniversity of SouthamptonSouthamptonUK
| | | | | | | | - Anne Rogers
- School of Health SciencesUniversity of SouthamptonSouthamptonUK
| | - Rebecca Band
- School of Health SciencesUniversity of SouthamptonSouthamptonUK
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Rand SE, Silarova B, Towers A, Jones K. Social care-related quality of life of people with dementia and their carers in England. Health Soc Care Community 2022; 30:e2406-e2418. [PMID: 34921481 PMCID: PMC9541270 DOI: 10.1111/hsc.13681] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/16/2021] [Accepted: 12/01/2021] [Indexed: 06/14/2023]
Abstract
People with dementia and their carers are a growing subgroup of people who use community-based social care. These services are designed to maintain people's quality of life while living at home. The ASCOT measure of social care-related quality of life (SCRQoL), designed to evaluate quality and effectiveness of social care, has been adapted for proxy-report when someone is unable to self-report. The ASCOT-Carer has been developed to measure carer's own SCRQoL. This study sought to establish the factors related to SCRQoL of people living with dementia (PLWD, proxy-reported by carers) and their carers. Data were collected via a self-administered postal or online survey of 313 carers in England, from January 2020 to April 2021. Carers were eligible if they supported someone living with dementia at home, who was unable to self-complete questionnaires. The person living with dementia or their carer had to use at least one social care service, e.g. home care. We recruited participants via an online volunteer panel and NHS sites. Multiple regression was applied to explore the factors significantly related to ASCOT SCRQoL by self- and proxy-report. Key influences on carers' own SCRQoL were their health, financial difficulties associated with caring, and satisfaction with social care support. Inadequate home design was significantly negatively associated with SCRQoL for PLWD. The latter stages of the pandemic-related restrictions (the tier system from 2nd December 2020 to study end, April 2021) were associated with significantly worse SCRQoL for PLWD, but not for carers. The study offers insight into the factors associated with SCRQoL. In particular, the findings highlight the importance of adequate home design for people with dementia; satisfactory social care support and limiting any adverse financial impact of caring are important for carers. The findings indicate a negative effect of COVID restrictions on SCRQoL of people with dementia.
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Affiliation(s)
- Stacey E. Rand
- Personal Social Services Research Unit (PSSRU)University of KentCanterburyUK
| | - Barbora Silarova
- Personal Social Services Research Unit (PSSRU)University of KentCanterburyUK
| | - Ann‐Marie Towers
- Centre for Health Services Research (CHSS)University of KentCanterburyUK
| | - Karen Jones
- Personal Social Services Research Unit (PSSRU)University of KentCanterburyUK
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Martin TC, Šimurina M, Ząbczyńska M, Martinic Kavur M, Rydlewska M, Pezer M, Kozłowska K, Burri A, Vilaj M, Turek-Jabrocka R, Krnjajić-Tadijanović M, Trofimiuk-Müldner M, Ugrina I, Lityńska A, Hubalewska-Dydejczyk A, Trbojevic-Akmacic I, Lim EM, Walsh JP, Pocheć E, Spector TD, Wilson SG, Lauc G. Decreased Immunoglobulin G Core Fucosylation, A Player in Antibody-dependent Cell-mediated Cytotoxicity, is Associated with Autoimmune Thyroid Diseases. Mol Cell Proteomics 2020; 19:774-792. [PMID: 32024769 PMCID: PMC7196582 DOI: 10.1074/mcp.ra119.001860] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [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: 10/31/2019] [Revised: 01/17/2020] [Indexed: 11/06/2022] Open
Abstract
Autoimmune thyroid diseases (AITD) are the most common group of autoimmune diseases, associated with lymphocyte infiltration and the production of thyroid autoantibodies, like thyroid peroxidase antibodies (TPOAb), in the thyroid gland. Immunoglobulins and cell-surface receptors are glycoproteins with distinctive glycosylation patterns that play a structural role in maintaining and modulating their functions. We investigated associations of total circulating IgG and peripheral blood mononuclear cells glycosylation with AITD and the influence of genetic background in a case-control study with several independent cohorts and over 3,000 individuals in total. The study revealed an inverse association of IgG core fucosylation with TPOAb and AITD, as well as decreased peripheral blood mononuclear cells antennary α1,2 fucosylation in AITD, but no shared genetic variance between AITD and glycosylation. These data suggest that the decreased level of IgG core fucosylation is a risk factor for AITD that promotes antibody-dependent cell-mediated cytotoxicity previously associated with TPOAb levels.
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Affiliation(s)
- Tiphaine C Martin
- Department of Twin Research and Genetic Epidemiology, King's College, London, United Kingdom; School of Biomedical Sciences, University of Western Australia, Crawley, Western Australia, Australia
| | - Mirna Šimurina
- Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia
| | - Marta Ząbczyńska
- Department of Glycoconjugate Biochemistry, Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
| | | | - Magdalena Rydlewska
- Department of Glycoconjugate Biochemistry, Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
| | - Marija Pezer
- Genos, Glycoscience Research Laboratory, Zagreb, Croatia
| | - Kamila Kozłowska
- Department of Glycoconjugate Biochemistry, Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
| | - Andrea Burri
- Health and Rehabilitation Research Institute, Auckland University of Technology, Auckland, New Zealand; Waitemata Pain Service, Department of Anaesthesia and Perioperative Medicine, North Shore Hospital, Auckland, New Zealand
| | - Marija Vilaj
- Genos, Glycoscience Research Laboratory, Zagreb, Croatia
| | - Renata Turek-Jabrocka
- Chair and Department of Endocrinology, Jagiellonian University Medical College, Krakow, Poland; Department of Endocrinology, University Hospital in Krakow, Krakow, Poland
| | | | - Małgorzata Trofimiuk-Müldner
- Chair and Department of Endocrinology, Jagiellonian University Medical College, Krakow, Poland; Department of Endocrinology, University Hospital in Krakow, Krakow, Poland
| | - Ivo Ugrina
- Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia; Genos, Glycoscience Research Laboratory, Zagreb, Croatia
| | - Anna Lityńska
- Department of Glycoconjugate Biochemistry, Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
| | - Alicja Hubalewska-Dydejczyk
- Chair and Department of Endocrinology, Jagiellonian University Medical College, Krakow, Poland; Department of Endocrinology, University Hospital in Krakow, Krakow, Poland
| | | | - Ee Mun Lim
- Department of Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia; Medical School, The University of Western Australia, Crawley, Western Australia, Australia
| | - John P Walsh
- Department of Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia; Medical School, The University of Western Australia, Crawley, Western Australia, Australia
| | - Ewa Pocheć
- Department of Glycoconjugate Biochemistry, Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
| | - Tim D Spector
- Department of Twin Research and Genetic Epidemiology, King's College, London, United Kingdom
| | - Scott G Wilson
- Department of Twin Research and Genetic Epidemiology, King's College, London, United Kingdom; School of Biomedical Sciences, University of Western Australia, Crawley, Western Australia, Australia; Department of Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
| | - Gordan Lauc
- Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia; Genos, Glycoscience Research Laboratory, Zagreb, Croatia.
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Chen L, Shi H, Koftori D, Sekine T, Nicastri A, Ternette N, Bowness P. Identification of an Unconventional Subpeptidome Bound to the Behçet's Disease-associated HLA-B*51:01 that is Regulated by Endoplasmic Reticulum Aminopeptidase 1 (ERAP1). Mol Cell Proteomics 2020; 19:871-883. [PMID: 32161166 PMCID: PMC7196583 DOI: 10.1074/mcp.ra119.001617] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 06/07/2019] [Revised: 03/10/2020] [Indexed: 01/31/2023] Open
Abstract
Human leukocyte antigen (HLA) B*51:01 and endoplasmic reticulum aminopeptidase 1 (ERAP1) are strongly genetically associated with Behçet's disease (BD). Previous studies have defined two subgroups of HLA-B*51 peptidome containing proline (Pro) or alanine (Ala) at position 2 (P2). Little is known about the unconventional non-Pro/Ala2 HLA-B*51-bound peptides. We aimed to study the features of this novel subpeptidome, and investigate its regulation by ERAP1. CRISPR-Cas9 was used to generate an HLA-ABC-triple knockout HeLa cell line (HeLa.ABC-KO), which was subsequently transduced to express HLA-B*51:01 (HeLa.ABC-KO.B51). ERAP1 was silenced using lentiviral shRNA. Peptides bound to HLA-B*51:01 were eluted and analyzed by mass spectrometry. The characteristics of non-Pro/Ala2, Pro2, and Ala2 peptides and their alteration by ERAP1 silencing were investigated. Effects of ERAP1 silencing on cell surface expression of HLA-B*51:01 were studied using flow cytometry. More than 20% of peptides eluted from HLA-B*51:01 lacked Pro or Ala at P2. This unconventional group of HLA-B*51:01-bound peptides was relatively enriched for 8-mers (with relatively fewer 9-mers) compared with the Pro2 and Ala2 subpeptidomes and had similar N-terminal and C-terminal residue usages to Ala2 peptides (with the exception of the less abundant leucine at position Ω). Knockdown of ERAP1 increased the percentage of non-Pro/Ala2 from 20% to ∼40%, increased the percentage of longer (10-mer and 11-mer) peptides eluted from HLA-B*51:01 complexes, and abrogated the predominance of leucine at P1. Interestingly knockdown of ERAP1 altered the length and N-terminal residue usage of non-Ala2&Pro2 and Ala2 but not the Pro2 peptides. Finally, ERAP1 silencing regulated the expression levels of cell surface HLA-B*51 in a cell-type-dependent manner. In conclusion, we have used a novel methodology to identify an unconventional but surprisingly abundant non-Pro/Ala2 HLA-B*51:01 subpeptidome. It is increased by knockdown of ERAP1, a gene affecting the risk of developing BD. This has implications for theories of disease pathogenesis.
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Affiliation(s)
- Liye Chen
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK.
| | - Hui Shi
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Danai Koftori
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Takuya Sekine
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | | | - Nicola Ternette
- Target Discovery Institute, University of Oxford, Oxford, UK
| | - Paul Bowness
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
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Touzelet O, Broadbent L, Armstrong SD, Aljabr W, Cloutman-Green E, Power UF, Hiscox JA. The Secretome Profiling of a Pediatric Airway Epithelium Infected with hRSV Identified Aberrant Apical/Basolateral Trafficking and Novel Immune Modulating (CXCL6, CXCL16, CSF3) and Antiviral (CEACAM1) Proteins. Mol Cell Proteomics 2020; 19:793-807. [PMID: 32075873 PMCID: PMC7196588 DOI: 10.1074/mcp.ra119.001546] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 05/23/2019] [Revised: 02/13/2020] [Indexed: 11/19/2022] Open
Abstract
The respiratory epithelium comprises polarized cells at the interface between the environment and airway tissues. Polarized apical and basolateral protein secretions are a feature of airway epithelium homeostasis. Human respiratory syncytial virus (hRSV) is a major human pathogen that primarily targets the respiratory epithelium. However, the consequences of hRSV infection on epithelium secretome polarity and content remain poorly understood. To investigate the hRSV-associated apical and basolateral secretomes, a proteomics approach was combined with an ex vivo pediatric human airway epithelial (HAE) model of hRSV infection (data are available via ProteomeXchange and can be accessed at https://www.ebi.ac.uk/pride/ with identifier PXD013661). Following infection, a skewing of apical/basolateral abundance ratios was identified for several individual proteins. Novel modulators of neutrophil and lymphocyte activation (CXCL6, CSF3, SECTM1 or CXCL16), and antiviral proteins (BST2 or CEACAM1) were detected in infected, but not in uninfected cultures. Importantly, CXCL6, CXCL16, CSF3 were also detected in nasopharyngeal aspirates (NPA) from hRSV-infected infants but not healthy controls. Furthermore, the antiviral activity of CEACAM1 against RSV was confirmed in vitro using BEAS-2B cells. hRSV infection disrupted the polarity of the pediatric respiratory epithelial secretome and was associated with immune modulating proteins (CXCL6, CXCL16, CSF3) never linked with this virus before. In addition, the antiviral activity of CEACAM1 against hRSV had also never been previously characterized. This study, therefore, provides novel insights into RSV pathogenesis and endogenous antiviral responses in pediatric airway epithelium.
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Affiliation(s)
- Olivier Touzelet
- Department of Infection Biology, Institute of Infection and Global Health, University of Liverpool, Liverpool L3 5RF, UK; Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Sciences, Queens University Belfast, Belfast BT9 7BL, UK
| | - Lindsay Broadbent
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Sciences, Queens University Belfast, Belfast BT9 7BL, UK
| | - Stuart D Armstrong
- Department of Infection Biology, Institute of Infection and Global Health, University of Liverpool, Liverpool L3 5RF, UK; NIHR Health Protection Research Unit in Emerging and Zoonotic Infections, University of Liverpool, L69 7BE, UK
| | - Waleed Aljabr
- Department of Infection Biology, Institute of Infection and Global Health, University of Liverpool, Liverpool L3 5RF, UK; Biomedical Research Administration, Research Centre, King Fahad Medical City, P.O. Box 59046 Riyadh 11252, Saudi Arabia
| | - Elaine Cloutman-Green
- Microbiology, Virology and Infection Control, Level 4 Camelia Botnar Laboratory, Great Ormond Street Hospital, London WC1N 3JH, UK
| | - Ultan F Power
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Sciences, Queens University Belfast, Belfast BT9 7BL, UK.
| | - Julian A Hiscox
- Department of Infection Biology, Institute of Infection and Global Health, University of Liverpool, Liverpool L3 5RF, UK; NIHR Health Protection Research Unit in Emerging and Zoonotic Infections, University of Liverpool, L69 7BE, UK; Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Singapore 138648, Singapore.
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Lauer V, Grampp S, Platt J, Lafleur V, Lombardi O, Choudhry H, Kranz F, Hartmann A, Wullich B, Yamamoto A, Coleman ML, Ratcliffe PJ, Mole DR, Schödel J. Hypoxia drives glucose transporter 3 expression through hypoxia-inducible transcription factor (HIF)-mediated induction of the long noncoding RNA NICI. J Biol Chem 2020; 295:4065-4078. [PMID: 31690629 PMCID: PMC7105321 DOI: 10.1074/jbc.ra119.009827] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [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: 06/18/2019] [Revised: 10/18/2019] [Indexed: 12/12/2022] Open
Abstract
Hypoxia-inducible transcription factors (HIFs) directly dictate the expression of multiple RNA species including novel and as yet uncharacterized long noncoding transcripts with unknown function. We used pan-genomic HIF-binding and transcriptomic data to identify a novel long noncoding RNA Noncoding Intergenic Co-Induced transcript (NICI) on chromosome 12p13.31 which is regulated by hypoxia via HIF-1 promoter-binding in multiple cell types. CRISPR/Cas9-mediated deletion of the hypoxia-response element revealed co-regulation of NICI and the neighboring protein-coding gene, solute carrier family 2 member 3 (SLC2A3) which encodes the high-affinity glucose transporter 3 (GLUT3). Knockdown or knockout of NICI attenuated hypoxic induction of SLC2A3, indicating a direct regulatory role of NICI in SLC2A3 expression, which was further evidenced by CRISPR/Cas9-VPR-mediated activation of NICI expression. We also demonstrate that regulation of SLC2A3 is mediated through transcriptional activation rather than posttranscriptional mechanisms because knockout of NICI leads to reduced recruitment of RNA polymerase 2 to the SLC2A3 promoter. Consistent with this we observe NICI-dependent regulation of glucose consumption and cell proliferation. Furthermore, NICI expression is regulated by the von Hippel-Lindau (VHL) tumor suppressor and is highly expressed in clear cell renal cell carcinoma (ccRCC), where SLC2A3 expression is associated with patient prognosis, implying an important role for the HIF/NICI/SLC2A3 axis in this malignancy.
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Affiliation(s)
- Victoria Lauer
- Department of Nephrology and Hypertension, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität Erlangen-Nürnberg, Ulmenweg 18, 91054 Erlangen, Germany
| | - Steffen Grampp
- Department of Nephrology and Hypertension, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität Erlangen-Nürnberg, Ulmenweg 18, 91054 Erlangen, Germany
| | - James Platt
- NDM Research Building, University of Oxford, Old Road Campus, Headington, Oxford OX3 7FZ, United Kingdom
| | - Veronique Lafleur
- NDM Research Building, University of Oxford, Old Road Campus, Headington, Oxford OX3 7FZ, United Kingdom
| | - Olivia Lombardi
- NDM Research Building, University of Oxford, Old Road Campus, Headington, Oxford OX3 7FZ, United Kingdom
| | - Hani Choudhry
- Department of Biochemistry, Faculty of Science, Center of Innovation in Personalized Medicine, King Fahd Center for Medical Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Franziska Kranz
- Department of Nephrology and Hypertension, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität Erlangen-Nürnberg, Ulmenweg 18, 91054 Erlangen, Germany; Department of Computer Science 9, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstraße 11, 91058 Erlangen, Germany
| | - Arndt Hartmann
- Institute of Pathology, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität Erlangen-Nürnberg, Krankenhausstraße 8-10, 91054 Erlangen, Germany
| | - Bernd Wullich
- Department of Urology and Pediatric Urology, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität Erlangen-Nürnberg, Krankenhausstraße 12, 91054 Erlangen, Germany
| | - Atsushi Yamamoto
- NDM Research Building, University of Oxford, Old Road Campus, Headington, Oxford OX3 7FZ, United Kingdom
| | - Mathew L Coleman
- Institute of Cancer and Genomic Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Peter J Ratcliffe
- NDM Research Building, University of Oxford, Old Road Campus, Headington, Oxford OX3 7FZ, United Kingdom
| | - David R Mole
- NDM Research Building, University of Oxford, Old Road Campus, Headington, Oxford OX3 7FZ, United Kingdom
| | - Johannes Schödel
- Department of Nephrology and Hypertension, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität Erlangen-Nürnberg, Ulmenweg 18, 91054 Erlangen, Germany.
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