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Magalhaes MS, Smith P, Portman JR, Jackson-Jones LH, Bain CC, Ramachandran P, Michailidou Z, Stimson RH, Dweck MR, Denby L, Henderson NC, Jenkins SJ, Bénézech C. Author Correction: Role of Tim4 in the regulation of ABCA1 + adipose tissue macrophages and post-prandial cholesterol levels. Nat Commun 2022; 13:1716. [PMID: 35338154 PMCID: PMC8956575 DOI: 10.1038/s41467-022-29352-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- M S Magalhaes
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - P Smith
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - J R Portman
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
| | - L H Jackson-Jones
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
- Division of Biomedical and Life Sciences, Lancaster University, Lancaster, UK
| | - C C Bain
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
| | - P Ramachandran
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
| | - Z Michailidou
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - R H Stimson
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - M R Dweck
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - L Denby
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - N C Henderson
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - S J Jenkins
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
| | - C Bénézech
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK.
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Connor K, Teenan O, Thomas R, Banwell V, Finnie S, Monaghan ML, Cairns C, Tannahill G, Harrison E, Conway B, Marson L, Denby L, Wigmore S. O45: DEFINING CELL-ENRICHED MICRORNAS TO SUPPORT RATIONAL BIOMARKER SELECTION IN HUMAN RENAL TRANSPLANTATION. Br J Surg 2021. [DOI: 10.1093/bjs/znab117.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Introduction
MicroRNAs are promising biomarkers of renal disease, however the cellular origin of their expression is usually unclear limiting their interpretation when measured in renal biopsies and urine. We hypothesised that by first defining renal cell-enriched microRNAs, we could select biomarkers based on the expected histopathological profile.
Method
Small RNA-sequencing of cortical, proximal tubular (LTL), macrophage (F480), endothelial (CD31) and fibroblast (PDGFRb) populations from the reversible unilateral ureteric obstruction (rUUO) murine model was performed. Hierarchical clustering was used to identify clusters. Findings were translated into an ischaemia reperfusion injury (IRI) model and then into urine samples from renal transplant recipients (n=16) with delayed graft function (DGF) vs. those with primary function.
Result
Kidney injury resulted in significant macrophage infiltration and tubular injury which improved upon reversal. We characterised novel microRNA clusters enriched for each cell type. With injury there was a significant increase in macrophage (p<0.0001), fibroblast (p<0.01) and decrease in proximal tubule (p<0.0001) enriched microRNAs vs. non-enriched microRNAs. We validated macrophage enriched miR-18a, miR-16 and tubular enriched miR-194 in the IRI model, demonstrating that microRNA expression reflected the histological profile. In humans, urinary miR-16 (FC 16.9; p<0.05) and miR-18a (FC 10: p=0.06) were upregulated at day 2 in patients with DGF; outperforming the traditional injury marker KIM1.
Conclusion
This is the first study to characterise cell-enriched microRNAs during renal injury and repair. By defining the source of microRNA expression we were able to rationally select miR-16 and miR-18a as promising urinary biomarkers of renal injury.
Take-home message
We have found that microRNAs have differences in expression between cell types and renal injury states which is important when considering microRNA expression in samples composed of varying cellular composition. By defining the cellular origins of microRNA expression we were able to rationally select microRNA biomarkers of human renal injury.
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Affiliation(s)
- K Connor
- University of Edinburgh
- Edinburgh Transplant Unit
| | | | | | | | | | | | | | | | - E Harrison
- University of Edinburgh
- Edinburgh Transplant Unit
- GlaxoSmithKline
| | | | - L Marson
- University of Edinburgh
- Edinburgh Transplant Unit
| | | | - S Wigmore
- University of Edinburgh
- Edinburgh Transplant Unit
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Nosalski R, Denby L, Siedlinski M, McGinnigle E, Nowak M, Dinh Cat AN, Skiba D, Justo-Junior A, Wilk G, Osmenda G, Maffia P, Graham D, Baker A, Guzik T. T Cell-Derived Mirna-214 Controls Perivascular Fibrosis In Hypertension. Atherosclerosis 2019. [DOI: 10.1016/j.atherosclerosis.2019.06.139] [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: 10/26/2022]
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Nosalski R, Siedlinski M, Nguyen Dinh Cat A, Skiba D, McGinnigle E, Baker A, Denby L, Guzik T. P3202T cell miR214 is involved in the development of perivascular fibrosis in angiotensin II dependent hypertension. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- R Nosalski
- Jagiellonian University Medical College, Krakow, Poland
| | - M Siedlinski
- Jagiellonian University Medical College, Krakow, Poland
| | | | - D Skiba
- Cardiovascular Research Centre of Glasgow, Glasgow, United Kingdom
| | - E McGinnigle
- Cardiovascular Research Centre of Glasgow, Glasgow, United Kingdom
| | - A Baker
- University of Edinburgh, Edinburgh, United Kingdom
| | - L Denby
- University of Edinburgh, Edinburgh, United Kingdom
| | - T Guzik
- Cardiovascular Research Centre of Glasgow, Glasgow, United Kingdom
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Sodi R, Eastwood J, Denby L, Godber I, Caslake M, Packard C. Relationship between circulating microRNA-30c with lipoproteins, their circulatory trafficking and effect of statins. Atherosclerosis 2016. [DOI: 10.1016/j.atherosclerosis.2016.07.503] [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: 11/26/2022]
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Denby L, Nicklin SA, Baker AH. Adeno-associated virus (AAV)-7 and -8 poorly transduce vascular endothelial cells and are sensitive to proteasomal degradation. Gene Ther 2006; 12:1534-8. [PMID: 15944729 DOI: 10.1038/sj.gt.3302564] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Transduction of the vascular endothelium by adeno-associated virus (AAV) vectors would have broad appeal for gene therapy. However, levels of transduction by AAV serotype-2 are low, an observation linked to deficiencies in endothelial cell binding, sequestration of virions in the extracellular matrix and/or virion degradation by the proteasome. Strategies to improve transduction of endothelial cells include AAV-2 capsid targeting using small peptides isolated by phage display or the use of alternate serotypes. Previously, we have shown that AAV serotypes-3 through -6 transduce endothelial cells with poor efficiency. Recently, AAV serotypes-7 and -8 have been shown to mediate efficient transduction of the skeletal muscle and liver, respectively, although their infectivity profile for vascular cells has not been addressed. Here, we show that AAV-7 and -8 also transduce endothelial cells with poor efficiency and the levels of transgene expression are markedly enhanced by inhibition of the proteasome. In both cases proteasome blockade enhances the nuclear translocation of virions. We further show that this is vascular cell-type selective since transduction of smooth muscle cells is not sensitive to proteasome inhibition. Analysis in intact blood vessels corroborated these findings and suggests that proteasome degradation is a common limiting factor for endothelial cell transduction by AAV vectors.
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Affiliation(s)
- L Denby
- British Heart Foundation, Glasgow Cardiovascular Research Centre, Division of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
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Denby L, Landwehr JM, Mallows CL. Comment. J Am Stat Assoc 2004. [DOI: 10.1198/016214504000000962] [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: 11/21/2022]
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Abstract
This paper demonstrates the power of statistical graphics in gleaning information from very large medical data sets. In the case of the particular data set described here (the wideband external pulse signal) little was known about the shape of the signal and the relationship of that shape to the characteristics of the related physical system, the cardiovascular system. Previous numerical statistical analyses of the data were unfruitful in finding the important relationships which were easily discovered through the appropriately designed graphics. The paper also describes the process of designing graphics to help in discovering the important relationships in the data.
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Affiliation(s)
- L Denby
- AT&T Bell Laboratories, Murray Hill, NJ 07974-0636
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Fu ZF, Denby L, Lien DH, Robinson AJ. An enzyme-linked immunosorbent assay (ELISA) for measurement of antibodies against equine herpesvirus 2 in equine sera. Acta Virol 1987; 31:468-74. [PMID: 2894140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
An indirect enzyme-linked immunosorbent assay (ELISA) was developed for the detection of antibodies against equine herpesvirus type 2 (EHV-2) in equine sera. The optimal conditions of antigen concentration, and serum and conjugate dilutions were established by chequerboard titrations. When the standard ELISA test was used for titration of test sera, it was found to give titres approximately 1500 times higher than those obtained in the virus neutralization (VN) test, and a correlation coefficient of 0.815 was obtained between these two tests on 42 equine sera. All the positive serum samples by the VN were also positive by the ELISA, and one negative serum in the former test was found to be positive in the latter. Under field conditions, the test also detected increases in antibody titres against EHV-2 in 13 out of 14 foals soon after these animals excreted the virus.
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Affiliation(s)
- Z F Fu
- Department of Veterinary Pathology and Public Health, Massey University, Palmerston North, New Zealand
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Clark LA, Denby L, Pregibon D, Harshfield GA, Pickering TG, Blank S, Laragh JH. A data-based method for bivariate outlier detection: application to automatic blood pressure recording devices. Psychophysiology 1987; 24:119-25. [PMID: 3575589 DOI: 10.1111/j.1469-8986.1987.tb01872.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Clark LA, Denby L, Pregibon D, Harshfield GA, Pickering TG, Blank S, Laragh JH. A quantitative analysis of the effects of activity and time of day on the diurnal variations of blood pressure. J Chronic Dis 1987; 40:671-81. [PMID: 3597670 DOI: 10.1016/0021-9681(87)90103-2] [Citation(s) in RCA: 141] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The effects of activity and time of day on blood pressure (BP) were analyzed in 461 patients with untreated hypertension who wore a noninvasive portable BP recorder which took readings every 15 minutes for 24 hours. Patients recorded activity and location in a diary. The data were analyzed separately for two groups of patients: the 190 who stayed at home and the 271 who went to work. The effects of 16 different activities on BP were estimated by relating the BP to the associated activity and to the individual's clinic BP. Blood pressure was higher at work than at home, but the increment of BP for individual activities was similar in the two locations. The overall effect of activities on BP variability was computed using a one-way analysis of covariance model. For the patients who went to work this model accounted for 40% of the observed variation (R2) for systolic and 39% for diastolic BP. A similar model using time of day instead of activity accounted for 33% of variability in both systolic and diastolic BP. Combining activity and time of day was little better than activity alone (41% for both). After allowing for the effects of activity on BP, where sleep is one of the activities, there was no significant diurnal variation of BP. We conclude that there is no important circadian rhythm of BP which is independent of activity.
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Pickering TG, Harshfield GA, Blank S, James GD, Laragh JH, Clark L, Denby L, Pregibon D. Behavioral determinants of 24-hour blood pressure patterns in borderline hypertension. J Cardiovasc Pharmacol 1986; 8 Suppl 5:S89-92. [PMID: 2427893 DOI: 10.1097/00005344-198608005-00017] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Borderline hypertension is a heterogeneous condition; only a minority of patients will progress to fixed essential hypertension or suffer cardiovascular damage. Ambulatory blood pressure monitoring can detect the subgroup of borderlines with sustained blood pressure elevation outside the office setting and can also provide a measure of blood pressure variability. Patients in the former group may be at greatest risk for cardiovascular complications while the latter have been theorized to be at risk for progression to fixed hypertension. Evidence we have gathered utilizing ambulatory monitoring does not support the contention that there is a subgroup of borderline hypertensives with excessive blood pressure variability in natural settings. Such recordings have been of benefit in identifying patients with excessive pressor responses to office visits. Future studies employing ambulatory monitoring may be useful in the detection of clinically important subgroups of borderline hypertension.
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Devereux RB, Pickering TG, Harshfield GA, Kleinert HD, Denby L, Clark L, Pregibon D, Jason M, Kleiner B, Borer JS, Laragh JH. Left ventricular hypertrophy in patients with hypertension: importance of blood pressure response to regularly recurring stress. Circulation 1983; 68:470-6. [PMID: 6223721 DOI: 10.1161/01.cir.68.3.470] [Citation(s) in RCA: 440] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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