1
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Florida EM, Li H, Hong CG, Ongstad EL, Gaddipati R, Sitaula S, Varma V, Parel PM, O'Hagan R, Chen MY, Teague HL, Playford MP, Karathanasis SK, Collén A, Mehta NN, Remaley AT, Sorokin AV. Relationship of Soluble Lectin-Like Low-Density Lipoprotein Receptor-1 (sLOX-1) With Inflammation and Coronary Plaque Progression in Psoriasis. J Am Heart Assoc 2023; 12:e031227. [PMID: 37982276 PMCID: PMC10727277 DOI: 10.1161/jaha.123.031227] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 10/24/2023] [Indexed: 11/21/2023]
Abstract
BACKGROUND Psoriasis is a chronic inflammatory condition associated with coronary artery disease risk. Uptake of oxidized low-density lipoprotein by the lectin-like low-density lipoprotein receptor-1 triggers release of the soluble extracellular domain of the receptor (sLOX-1). We sought to characterize the relationship between sLOX-1, inflammation, and coronary plaque progression in psoriasis. METHODS AND RESULTS A total of 327 patients with psoriasis had serum sLOX-1 levels measured at baseline by an ELISA-based assay. Stratification by high-sensitivity C-reactive protein ≥4.0 mg/L (quartile 4), identified 81 participants who had coronary plaque phenotyping at baseline and were followed longitudinally by coronary computed tomography angiography. Subjects within high-sensitivity C-reactive protein quartile 4 were middle-aged (51.47±12.62 years), predominantly men (54.3%) with moderate psoriasis disease severity (6.60 [interquartile range, 3.30-13.40]). In the study cohort, participants with sLOX-1 above the median displayed increased vulnerable coronary plaque features. At baseline, sLOX-1 was associated with total burden (rho=0.296; P=0.01), noncalcified burden (rho=0.286; P=0.02), fibro-fatty burden (rho=0.346; P=0.004), and necrotic burden (rho=0.394; P=0.002). A strong relationship between sLOX-1, noncalcified burden (β=0.19; P=0.03), and fibro-fatty burden (β=0.29; P=0.003) was found in fully adjusted models at baseline and 1- and 4-year follow-up. Finally, coronary plaque features progressed over 1 year regardless of biologic or systemic treatment in subjects with high sLOX-1. CONCLUSIONS Patients with psoriasis with both high sLOX-1 and high-sensitivity C-reactive protein levels have increased coronary plaque burden associated with atherosclerotic plaque progression independent of biologic and systemic treatment. Thus, sLOX-1 might be considered as a promising marker in coronary artery disease risk estimation beyond traditional risk factors. REGISTRATION URL: https://www.clinicaltrials.gov; Unique identifier: NCT01778569.
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Affiliation(s)
- Elizabeth M. Florida
- Section of Inflammation and Cardiometabolic DiseasesNational Heart, Lung, and Blood Institute, National Institutes of HealthBethesdaMDUSA
| | - Haiou Li
- Section of Inflammation and Cardiometabolic DiseasesNational Heart, Lung, and Blood Institute, National Institutes of HealthBethesdaMDUSA
| | - Christin G. Hong
- Section of Inflammation and Cardiometabolic DiseasesNational Heart, Lung, and Blood Institute, National Institutes of HealthBethesdaMDUSA
| | - Emily L. Ongstad
- Bioscience Cardiovascular, Research and Early Development, Cardiovascular, Renal, and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZenecaGaithersburgMDUSA
| | - Ranjitha Gaddipati
- Bioscience Cardiovascular, Research and Early Development, Cardiovascular, Renal, and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZenecaGaithersburgMDUSA
| | - Sadichha Sitaula
- Bioscience Cardiovascular, Research and Early Development, Cardiovascular, Renal, and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZenecaGaithersburgMDUSA
| | - Vijayalakshmi Varma
- Translational Science and Experimental Medicine, Research and Early Development, Cardiovascular, Renal, and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZenecaGaithersburgMDUSA
| | - Philip M. Parel
- Section of Inflammation and Cardiometabolic DiseasesNational Heart, Lung, and Blood Institute, National Institutes of HealthBethesdaMDUSA
| | - Ross O'Hagan
- Section of Inflammation and Cardiometabolic DiseasesNational Heart, Lung, and Blood Institute, National Institutes of HealthBethesdaMDUSA
| | - Marcus Y. Chen
- Section of Inflammation and Cardiometabolic DiseasesNational Heart, Lung, and Blood Institute, National Institutes of HealthBethesdaMDUSA
| | - Heather L. Teague
- Section of Inflammation and Cardiometabolic DiseasesNational Heart, Lung, and Blood Institute, National Institutes of HealthBethesdaMDUSA
| | - Martin P. Playford
- Section of Inflammation and Cardiometabolic DiseasesNational Heart, Lung, and Blood Institute, National Institutes of HealthBethesdaMDUSA
| | - Sotirios K. Karathanasis
- NeoProgenBaltimoreMDUSA
- Section of Lipoprotein Metabolism, Translational Vascular Medicine Branch, National HeartLung and Blood Institute, National Institutes of HealthBethesdaMDUSA
| | - Anna Collén
- Projects, Research and Early Development, Cardiovascular, Renal, and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZenecaGaithersburgMDUSA
| | - Nehal N. Mehta
- Section of Inflammation and Cardiometabolic DiseasesNational Heart, Lung, and Blood Institute, National Institutes of HealthBethesdaMDUSA
| | - Alan T. Remaley
- Section of Lipoprotein Metabolism, Translational Vascular Medicine Branch, National HeartLung and Blood Institute, National Institutes of HealthBethesdaMDUSA
| | - Alexander V. Sorokin
- Section of Inflammation and Cardiometabolic DiseasesNational Heart, Lung, and Blood Institute, National Institutes of HealthBethesdaMDUSA
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2
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Sorokin AV, Hong CG, Aponte AM, Florida EM, Tang J, Patel N, Baranova IN, Li H, Parel PM, Chen V, Wilson SR, Ongstad EL, Collén A, Playford MP, Eggerman TL, Chen MY, Kotani K, Bocharov AV, Remaley AT. Association of oxidized ApoB and oxidized ApoA-I with high-risk coronary plaque features in cardiovascular disease. JCI Insight 2023; 8:e172893. [PMID: 37698922 PMCID: PMC10619497 DOI: 10.1172/jci.insight.172893] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 09/05/2023] [Indexed: 09/14/2023] Open
Abstract
BACKGROUND Oxidized apolipoprotein B (oxLDL) and oxidized ApoA-I (oxHDL) are proatherogenic. Their prognostic value for assessing high-risk plaques by coronary computed tomography angiography (CCTA) is missing. METHODS In a prospective, observational study, 306 participants with cardiovascular disease (CVD) had extensive lipoprotein profiling. Proteomics analysis was performed on isolated oxHDL, and atherosclerotic plaque assessment was accomplished by quantitative CCTA. RESULTS Patients were predominantly White, overweight men (58.5%) on statin therapy (43.5%). Increase in LDL-C, ApoB, small dense LDL-C (P < 0.001 for all), triglycerides (P = 0.03), and lower HDL function were observed in the high oxLDL group. High oxLDL associated with necrotic burden (NB; β = 0.20; P < 0.0001) and fibrofatty burden (FFB; β = 0.15; P = 0.001) after multivariate adjustment. Low oxHDL had a significant reverse association with these plaque characteristics. Plasma oxHDL levels better predicted NB and FFB after adjustment (OR, 2.22; 95% CI, 1.27-3.88, and OR, 2.80; 95% CI, 1.71-4.58) compared with oxLDL and HDL-C. Interestingly, oxHDL associated with fibrous burden (FB) change over 3.3 years (β = 0.535; P = 0.033) when compared with oxLDL. Combined Met136 mono-oxidation and Trp132 dioxidation of HDL showed evident association with coronary artery calcium score (r = 0.786; P < 0.001) and FB (r = 0.539; P = 0.012) in high oxHDL, whereas Met136 mono-oxidation significantly associated with vulnerable plaque in low oxHDL. CONCLUSION Our findings suggest that the investigated oxidized lipids are associated with high-risk coronary plaque features and progression over time in patients with CVD. TRIAL REGISTRATION CLINICALTRIALS gov NCT01621594. FUNDING National Heart, Lung, and Blood Institute at the NIH Intramural Research Program.
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Affiliation(s)
| | - Christin G. Hong
- Section of Inflammation and Cardiometabolic Diseases, Cardiovascular Branch
| | | | | | - Jingrong Tang
- Section of Lipoprotein Metabolism, Translational Vascular Medicine Branch, National Heart, Lung, and Blood Institute, NIH, Bethesda, Maryland, USA
| | - Nidhi Patel
- Section of Inflammation and Cardiometabolic Diseases, Cardiovascular Branch
| | - Irina N. Baranova
- Department of Laboratory Medicine, Clinical Center, NIH, Bethesda, Maryland, USA
| | - Haiou Li
- Section of Inflammation and Cardiometabolic Diseases, Cardiovascular Branch
| | - Philip M. Parel
- Section of Inflammation and Cardiometabolic Diseases, Cardiovascular Branch
| | - Vicky Chen
- Bioinformatics/Integrated Data Sciences Section, Research Technology Branch, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, Maryland, USA
| | - Sierra R. Wilson
- Section of Lipoprotein Metabolism, Translational Vascular Medicine Branch, National Heart, Lung, and Blood Institute, NIH, Bethesda, Maryland, USA
| | | | - Anna Collén
- Projects, Research and Early Development, Cardiovascular, Renal, and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, Maryland, USA
| | - Martin P. Playford
- Section of Inflammation and Cardiometabolic Diseases, Cardiovascular Branch
| | - Thomas L. Eggerman
- Department of Laboratory Medicine, Clinical Center, NIH, Bethesda, Maryland, USA
| | - Marcus Y. Chen
- Section of Inflammation and Cardiometabolic Diseases, Cardiovascular Branch
| | - Kazuhiko Kotani
- Division of Community and Family Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | | | - Alan T. Remaley
- Section of Lipoprotein Metabolism, Translational Vascular Medicine Branch, National Heart, Lung, and Blood Institute, NIH, Bethesda, Maryland, USA
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3
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Lund LH, Lam CS, Pizzato PE, Gabrielsen A, Michaëlsson E, Nelander K, Ericsson H, Holden J, Folkvaljon F, Mattsson A, Collén A, Aurell M, Whatling C, Baldus S, Drelich G, Goudev A, Merkely B, Bergh N, Shah SJ. Rationale and design of ENDEAVOR: A sequential phase 2b-3 randomized clinical trial to evaluate the effect of myeloperoxidase inhibition on symptoms and exercise capacity in heart failure with preserved or mildly reduced ejection fraction. Eur J Heart Fail 2023; 25:1696-1707. [PMID: 37470101 PMCID: PMC10592288 DOI: 10.1002/ejhf.2977] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [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: 03/01/2023] [Revised: 06/15/2023] [Accepted: 07/07/2023] [Indexed: 07/21/2023] Open
Abstract
AIMS Mitiperstat (formerly AZD4831) is a novel selective myeloperoxidase inhibitor. Currently, no effective therapies target comorbidity-induced systemic inflammation, which may be a key mechanism underlying heart failure with preserved or mildly reduced ejection fraction (HFpEF/HFmrEF). Circulating neutrophils secrete myeloperoxidase, causing oxidative stress, microvascular endothelial dysfunction, interstitial fibrosis, cardiomyocyte remodelling and diastolic dysfunction. Mitiperstat may therefore improve function of the heart and other organs, and ameliorate heart failure symptoms and exercise intolerance. ENDEAVOR is a combined, seamless phase 2b-3 study of the efficacy and safety of mitiperstat in patients with HFpEF/HFmrEF. METHODS In phase 2b, approximately 660 patients with heart failure and ejection fraction >40% are being randomized 1:1:1 to mitiperstat 2.5 mg, 5 mg or placebo for 48 weeks. Eligible patients have baseline 6-min walk distance (6MWD) of 30-400 m with a <50 m difference between screening and randomization and Kansas City Cardiomyopathy Questionnaire total symptom score (KCCQ-TSS) ≤90 points at screening and randomization. The dual primary endpoints are change from baseline to week 16 in 6MWD and KCCQ-TSS. The sample size provides 85% power to detect placebo-adjusted improvements of 21 m in 6MWD and 6.0 points in KCCQ-TSS at overall two-sided alpha of 0.05. Safety is monitored throughout treatment, with a focus on maculopapular rash. In phase 3 of ENDEAVOR, approximately 820 patients will be randomized 1:1 to mitiperstat or placebo. CONCLUSION ENDEAVOR is the first phase 2b-3 study to evaluate whether myeloperoxidase inhibition can improve symptoms and exercise capacity in patients with HFpEF/HFmrEF.
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Affiliation(s)
- Lars H. Lund
- Department of Medicine, Karolinska Institute, and Heart, Vascular and Neuro Theme, Karolinska University Hospital, Stockholm, Sweden
| | - Carolyn S.P. Lam
- National Heart Centre Singapore and Duke National University of Singapore, Singapore
| | - Patricia E. Pizzato
- Early Clinical Development, Research and Early Clinical Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Anders Gabrielsen
- Early Clinical Development, Research and Early Clinical Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Erik Michaëlsson
- Early Clinical Development, Research and Early Clinical Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Karin Nelander
- Early Biometrics and Statistical Innovation, Data Science and AI, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Hans Ericsson
- Clinical Pharmacology and Quantitative Pharmacology, Clinical Pharmacology and Safety Sciences, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Julie Holden
- Patient Safety, BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, USA
| | - Folke Folkvaljon
- Late-Stage Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Andrea Mattsson
- Late-Stage Development, Cardiovascular, Renal and Metabolism – Biometrics, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Anna Collén
- Projects, Research and Early Development, Cardiovascular, Renal and Metabolism, Biopharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Malin Aurell
- Early Clinical Development, Research and Early Clinical Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Carl Whatling
- Translational Science and Experimental Medicine, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Stephan Baldus
- Department of Internal Medicine and Cardiology, University Hospital Cologne, Cologne, Germany
| | | | - Assen Goudev
- Clinic of Cardiology, Tsaritsa Joanna University Hospital – ISUL, Sofia, Bulgaria
| | - Béla Merkely
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Niklas Bergh
- Department of Cardiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Sanjiv J. Shah
- Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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4
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Davidsson P, Eketjäll S, Eriksson N, Walentinsson A, Becker RC, Cavallin A, Bogstedt A, Collén A, Held C, James S, Siegbahn A, Stewart R, Storey RF, White H, Wallentin L. Vascular endothelial growth factor-D plasma levels and VEGFD genetic variants are independently associated with outcomes in patients with cardiovascular disease. Cardiovasc Res 2023; 119:1596-1605. [PMID: 36869765 DOI: 10.1093/cvr/cvad039] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 12/21/2022] [Accepted: 01/05/2023] [Indexed: 03/05/2023] Open
Abstract
AIMS The vascular endothelial growth factor (VEGF) family is involved in pathophysiological mechanisms underlying cardiovascular (CV) diseases. The aim of this study was to investigate the associations between circulating VEGF ligands and/or soluble receptors and CV outcome in patients with acute coronary syndrome (ACS) and chronic coronary syndrome (CCS). METHODS AND RESULTS Levels of VEGF biomarkers, including bFGF, Flt-1, KDR (VEGFR2), PlGF, Tie-2, VEGF-A, VEGF-C, and VEGF-D, were measured in the PLATO ACS cohort (n = 2091, discovery cohort). Subsequently, VEGF-D was also measured in the STABILITY CCS cohort (n = 4015, confirmation cohort) to verify associations with CV outcomes. Associations between plasma VEGF-D and outcomes were analysed by multiple Cox regression models with hazard ratios (HR [95% CI]) comparing the upper vs. the lower quartile of VEGF-D. Genome-wide association study (GWAS) of VEGF-D in PLATO identified SNPs that were used as genetic instruments in Mendelian randomization (MR) meta-analyses vs. clinical endpoints. GWAS and MR were performed in patients with ACS from PLATO (n = 10 013) and FRISC-II (n = 2952), and with CCS from the STABILITY trial (n = 10 786). VEGF-D, KDR, Flt-1, and PlGF showed significant association with CV outcomes. VEGF-D was most strongly associated with CV death (P = 3.73e-05, HR 1.892 [1.419, 2.522]). Genome-wide significant associations with VEGF-D levels were identified at the VEGFD locus on chromosome Xp22. MR analyses of the combined top ranked SNPs (GWAS P-values; rs192812042, P = 5.82e-20; rs234500, P = 1.97e-14) demonstrated a significant effect on CV mortality [P = 0.0257, HR 1.81 (1.07, 3.04) per increase of one unit in log VEGF-D]. CONCLUSION This is the first large-scale cohort study to demonstrate that both VEGF-D plasma levels and VEGFD genetic variants are independently associated with CV outcomes in patients with ACS and CCS. Measurements of VEGF-D levels and/or VEGFD genetic variants may provide incremental prognostic information in patients with ACS and CCS.
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Affiliation(s)
- Pia Davidsson
- Translational Science and Experimental Medicine, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Pepparedsleden 1, 431 83 Mölndal, Sweden
| | - Susanna Eketjäll
- Translational Science and Experimental Medicine, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Pepparedsleden 1, 431 83 Mölndal, Sweden
| | - Niclas Eriksson
- Uppsala Clinical Research Center, Uppsala University, Dag Hammarskjölds väg 38, 751 85 Uppsala, Sweden
| | - Anna Walentinsson
- Translational Science and Experimental Medicine, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Pepparedsleden 1, 431 83 Mölndal, Sweden
| | - Richard C Becker
- Division of Cardiovascular Health and Disease, Heart, Lung and Vascular Institute, University of Cincinnati College of Medicine, 231 Albert Sabin Way ML 0542, Cincinnati, OH, 45267, USA
| | - Anders Cavallin
- Translational Science and Experimental Medicine, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Pepparedsleden 1, 431 83 Mölndal, Sweden
| | - Anna Bogstedt
- Translational Science and Experimental Medicine, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Pepparedsleden 1, 431 83 Mölndal, Sweden
| | - Anna Collén
- Projects, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Pepparedsleden 1, 431 83 Mölndal, Sweden
| | - Claes Held
- Uppsala Clinical Research Center, Uppsala University, Dag Hammarskjölds väg 38, 751 85 Uppsala, Sweden
- Department of Medical Sciences, Cardiology, Uppsala University, Akademiska Sjukhuset, 751 85 Uppsala, Sweden
| | - Stefan James
- Uppsala Clinical Research Center, Uppsala University, Dag Hammarskjölds väg 38, 751 85 Uppsala, Sweden
- Department of Medical Sciences, Cardiology, Uppsala University, Akademiska Sjukhuset, 751 85 Uppsala, Sweden
| | - Agneta Siegbahn
- Uppsala Clinical Research Center, Uppsala University, Dag Hammarskjölds väg 38, 751 85 Uppsala, Sweden
- Department of Medical Sciences, Cardiology, Uppsala University, Akademiska Sjukhuset, 751 85 Uppsala, Sweden
- Clinical Chemistry, Uppsala University, Akademiska Sjukhuset, 751 85 Uppsala, Sweden
| | - Ralph Stewart
- Green Lane Cardiovascular Service, Auckland City Hospital, 2 Park Road, Grafton, Auckland 1023, New Zealand
| | - Robert F Storey
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, Beech Hill Road, Sheffield, S10 2RX, UK
| | - Harvey White
- Green Lane Cardiovascular Service, Auckland City Hospital, 2 Park Road, Grafton, Auckland 1023, New Zealand
| | - Lars Wallentin
- Uppsala Clinical Research Center, Uppsala University, Dag Hammarskjölds väg 38, 751 85 Uppsala, Sweden
- Department of Medical Sciences, Cardiology, Uppsala University, Akademiska Sjukhuset, 751 85 Uppsala, Sweden
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5
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Anttila V, Saraste A, Knuuti J, Hedman M, Jaakkola P, Laugwitz KL, Krane M, Jeppsson A, Sillanmäki S, Rosenmeier J, Zingmark P, Rudvik A, Garkaviy P, Watson C, Pangalos MN, Chien KR, Fritsche-Danielson R, Collén A, Gan LM. Direct intramyocardial injection of VEGF mRNA in patients undergoing coronary artery bypass grafting. Mol Ther 2023; 31:866-874. [PMID: 36528793 PMCID: PMC10014220 DOI: 10.1016/j.ymthe.2022.11.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/27/2022] [Accepted: 11/29/2022] [Indexed: 12/23/2022] Open
Abstract
Vascular endothelial growth factor A (VEGF-A) has therapeutic cardiovascular effects, but delivery challenges have impeded clinical development. We report the first clinical study of naked mRNA encoding VEGF-A (AZD8601) injected into the human heart. EPICCURE (ClinicalTrials.gov: NCT03370887) was a randomized, double-blind study of AZD8601 in patients with left ventricular ejection fraction (LVEF) 30%-50% who were undergoing elective coronary artery bypass surgery. Thirty epicardial injections of AZD8601 (total 3 mg) or placebo in citrate-buffered saline were targeted to ischemic but viable myocardial regions mapped using quantitative [15O]-water positron emission tomography. Seven patients received AZD8601 and four received placebo and were followed for 6 months. There were no deaths or treatment-related serious adverse events and no AZD8601-associated infections, immune reactions, or arrhythmias. Exploratory outcomes indicated potential improvement in LVEF, Kansas City Cardiomyopathy Questionnaire scores, and N-terminal pro-B-type natriuretic peptide levels, but the study is limited in size, and significant efficacy conclusions are not possible from the dataset. Naked mRNA without lipid encapsulation may provide a safe delivery platform for introducing genetic material to cardiac muscle, but further studies are needed to confirm efficacy and safety in a larger patient pool.
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Affiliation(s)
- Vesa Anttila
- Heart Centre, Turku University Hospital and University of Turku, Turku, Finland
| | - Antti Saraste
- Heart Centre, Turku University Hospital and University of Turku, Turku, Finland; Turku PET Centre, Turku University Hospital and University of Turku, Turku, Finland
| | - Juhani Knuuti
- Turku PET Centre, Turku University Hospital and University of Turku, Turku, Finland
| | - Marja Hedman
- Heart Centre, Kuopio University Hospital, Kuopio, Finland; Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Pekka Jaakkola
- Heart Centre, Kuopio University Hospital, Kuopio, Finland
| | - Karl-Ludwig Laugwitz
- First Medical Department (Cardiology, Angiology and Pneumology), Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Markus Krane
- German Centre for Cardiovascular Research (DZHK), Munich Heart Alliance, Munich, Germany; Department of Cardiovascular Surgery, German Heart Centre Munich, Technical University of Munich, Munich, Germany; Division of Cardiac Surgery, Yale School of Medicine, Yale University, New Haven, CT, USA
| | - Anders Jeppsson
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Saara Sillanmäki
- Department of Clinical Physiology and Nuclear Medicine, Kuopio University Hospital, Kuopio, Finland
| | - Jaya Rosenmeier
- Research and Early Clinical Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Pernilla Zingmark
- Research and Early Clinical Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Anna Rudvik
- Early Biometrics & Statistical Innovation, Data Science & Artificial Intelligence, R&D, AstraZeneca, Gothenburg, Sweden
| | - Pavlo Garkaviy
- Research and Early Clinical Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Christina Watson
- Study Management Early, Cardiovascular, Renal, and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Cambridge, UK
| | | | - Kenneth R Chien
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Regina Fritsche-Danielson
- Research and Early Clinical Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Anna Collén
- Research and Early Clinical Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.
| | - Li-Ming Gan
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Research and Early Clinical Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden; Department of Cardiology, Sahlgrenska University Hospital, Gothenburg, Sweden
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6
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Vavere AL, Sinsakul M, Ongstad EL, Yang Y, Varma V, Jones C, Goodman J, Dubois VFS, Quartino AL, Karathanasis SK, Abuhatzira L, Collén A, Antoniades C, Koren MJ, Gupta R, George RT. Lectin-Like Oxidized Low-Density Lipoprotein Receptor 1 Inhibition in Type 2 Diabetes: Phase 1 Results. J Am Heart Assoc 2023; 12:e027540. [PMID: 36688371 PMCID: PMC9973634 DOI: 10.1161/jaha.122.027540] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 12/12/2022] [Indexed: 01/24/2023]
Abstract
Background Blockade of the lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) is a potentially attractive mechanism for lowering inflammatory and lipid risk in patients with atherosclerosis. This study aims to assess the safety, tolerability, and target engagement of MEDI6570, a high-affinity monoclonal blocking antibody to LOX-1. Methods and Results This phase 1, first-in-human, placebo-controlled study (NCT03654313) randomized 88 patients with type 2 diabetes to receive single ascending doses (10, 30, 90, 250, or 500 mg) or multiple ascending doses (90, 150, or 250 mg once monthly for 3 months) of MEDI6570 or placebo. Primary end point was safety; secondary and exploratory end points included pharmacokinetics, immunogenicity, free soluble LOX-1 levels, and change in coronary plaque volume. Mean age was 57.6/58.1 years in the single ascending doses/multiple ascending doses groups, 31.3%/62.5% were female, and mean type 2 diabetes duration was 9.7/8.7 years. Incidence of adverse events was similar among cohorts. MEDI6570 exhibited nonlinear pharmacokinetics, with terminal half-life increasing from 4.6 days (30 mg) to 11.2 days (500 mg), consistent with target-mediated drug disposition. Dose-dependent reductions in mean soluble LOX-1 levels from baseline were observed (>66% at 4 weeks and 71.61-82.96% at 10 weeks in the single ascending doses and multiple ascending doses groups, respectively). After 3 doses, MEDI6570 was associated with nonsignificant regression of noncalcified plaque volume versus placebo (-13.45 mm3 versus -8.25 mm3). Conclusions MEDI6570 was well tolerated and demonstrated dose-dependent soluble LOX-1 suppression and a pharmacokinetic profile consistent with once-monthly dosing. Registration URL: https://clinicaltrials.gov/; Unique identifier: NCT03654313.
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Affiliation(s)
- Andrea L Vavere
- Early Clinical Development, Research and Early Development, Cardiovascular, Renal and Metabolism BioPharmaceuticals R&D, AstraZeneca Gaithersburg MD USA
| | - Marvin Sinsakul
- Early Clinical Development, Research and Early Development, Cardiovascular, Renal and Metabolism BioPharmaceuticals R&D, AstraZeneca Gaithersburg MD USA
| | - Emily L Ongstad
- Bioscience Cardiovascular, Research and Early Development, Cardiovascular, Renal and Metabolism BioPharmaceuticals R&D, AstraZeneca Gaithersburg MD USA
| | - Ye Yang
- Early CVRM Biometrics, Research and Early Development, Cardiovascular, Renal and Metabolism BioPharmaceuticals R&D, AstraZeneca Gaithersburg MD USA
| | - Vijayalakshmi Varma
- Early Clinical Development, Research and Early Development, Cardiovascular, Renal and Metabolism BioPharmaceuticals R&D, AstraZeneca Gaithersburg MD USA
| | - Christopher Jones
- Clinical Pharmacology & Quantitative Pharmacology Clinical Pharmacology & Safety Sciences, R&D, AstraZeneca Gothenburg Sweden
| | - Joanne Goodman
- Clinical Pharmacology & Quantitative Pharmacology Clinical Pharmacology & Safety Sciences, R&D, AstraZeneca Gothenburg Sweden
| | - Vincent F S Dubois
- Clinical Pharmacology & Quantitative Pharmacology Clinical Pharmacology & Safety Sciences, R&D, AstraZeneca Gothenburg Sweden
| | - Angelica L Quartino
- Clinical Pharmacology & Quantitative Pharmacology Clinical Pharmacology & Safety Sciences, R&D, AstraZeneca Gothenburg Sweden
| | - Sotirios K Karathanasis
- Bioscience Cardiovascular, Research and Early Development, Cardiovascular, Renal and Metabolism BioPharmaceuticals R&D, AstraZeneca Gaithersburg MD USA
| | - Liron Abuhatzira
- Early Clinical Development, Research and Early Development, Cardiovascular, Renal and Metabolism BioPharmaceuticals R&D, AstraZeneca Gaithersburg MD USA
| | - Anna Collén
- Projects, Research and Early Development, Cardiovascular, Renal and Metabolism BioPharmaceuticals R&D, AstraZeneca Gothenburg Sweden
| | - Charalambos Antoniades
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine University of Oxford United Kingdom
| | - Michael J Koren
- Jacksonville Center for Clinical Research (JCCR) Jacksonville FL USA
| | - Ruchi Gupta
- Bioscience Cardiovascular, Research and Early Development, Cardiovascular, Renal and Metabolism BioPharmaceuticals R&D, AstraZeneca Gaithersburg MD USA
| | - Richard T George
- Early Clinical Development, Research and Early Development, Cardiovascular, Renal and Metabolism BioPharmaceuticals R&D, AstraZeneca Gaithersburg MD USA
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7
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Affiliation(s)
- Anna Collén
- Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.
| | - Nils Bergenhem
- Alliance Management, Business Development, BioPharmaceuticals R&D, AstraZeneca, Boston, MA, USA
| | - Leif Carlsson
- Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Kenneth R Chien
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | | | - Li-Ming Gan
- Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.,Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Cardiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Regina Fritsche-Danielson
- Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
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8
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Vavere AL, Sinsakul M, Ongstad E, Yang Y, Varma V, Dubois V, Quartino A, Karathanasis S, Gupta R, Abuhatzira L, Collén A, Koren M, George R. THE SAFETY AND EFFICACY OF SINGLE AND MULTIPLE ASCENDING DOSES OF MEDI6570 IN PARTICIPANTS WITH TYPE 2 DIABETES MELLITUS. J Am Coll Cardiol 2021. [DOI: 10.1016/s0735-1097(21)02548-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Munson MJ, O'Driscoll G, Silva AM, Lázaro-Ibáñez E, Gallud A, Wilson JT, Collén A, Esbjörner EK, Sabirsh A. A high-throughput Galectin-9 imaging assay for quantifying nanoparticle uptake, endosomal escape and functional RNA delivery. Commun Biol 2021; 4:211. [PMID: 33594247 PMCID: PMC7887203 DOI: 10.1038/s42003-021-01728-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [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: 11/02/2020] [Accepted: 01/20/2021] [Indexed: 02/07/2023] Open
Abstract
RNA-based therapies have great potential to treat many undruggable human diseases. However, their efficacy, in particular for mRNA, remains hampered by poor cellular delivery and limited endosomal escape. Development and optimisation of delivery vectors, such as lipid nanoparticles (LNPs), are impeded by limited screening methods to probe the intracellular processing of LNPs in sufficient detail. We have developed a high-throughput imaging-based endosomal escape assay utilising a Galectin-9 reporter and fluorescently labelled mRNA to probe correlations between nanoparticle-mediated uptake, endosomal escape frequency, and mRNA translation. Furthermore, this assay has been integrated within a screening platform for optimisation of lipid nanoparticle formulations. We show that Galectin-9 recruitment is a robust, quantitative reporter of endosomal escape events induced by different mRNA delivery nanoparticles and small molecules. We identify nanoparticles with superior escape properties and demonstrate cell line variances in endosomal escape response, highlighting the need for fine-tuning of delivery formulations for specific applications.
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Affiliation(s)
- Michael J Munson
- Advanced Drug Delivery, Pharmaceutical Sciences, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.
| | - Gwen O'Driscoll
- Advanced Drug Delivery, Pharmaceutical Sciences, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Andreia M Silva
- Discovery Biology, Discovery Sciences, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Elisa Lázaro-Ibáñez
- Advanced Drug Delivery, Pharmaceutical Sciences, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Audrey Gallud
- Division of Chemical and Biomolecular Engineering, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - John T Wilson
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA
| | - Anna Collén
- Projects, Research and Early Development, Cardiovascular, Renal and Metabolism, Biopharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Elin K Esbjörner
- Division of Chemical and Biomolecular Engineering, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Alan Sabirsh
- Advanced Drug Delivery, Pharmaceutical Sciences, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.
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10
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Gan LM, Lagerström-Fermér M, Carlsson LG, Arfvidsson C, Egnell AC, Rudvik A, Kjaer M, Collén A, Thompson JD, Joyal J, Chialda L, Koernicke T, Fuhr R, Chien KR, Fritsche-Danielson R. Intradermal delivery of modified mRNA encoding VEGF-A in patients with type 2 diabetes. Nat Commun 2019; 10:871. [PMID: 30787295 PMCID: PMC6382754 DOI: 10.1038/s41467-019-08852-4] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 02/04/2019] [Indexed: 01/11/2023] Open
Abstract
Chemically modified mRNA is an efficient, biocompatible modality for therapeutic protein expression. We report a first-time-in-human study of this modality, aiming to evaluate safety and potential therapeutic effects. Men with type 2 diabetes mellitus (T2DM) received intradermal injections of modified mRNA encoding vascular endothelial growth factor A (VEGF-A) or buffered saline placebo (ethical obligations precluded use of a non-translatable mRNA control) at randomized sites on the forearm. The only causally treatment-related adverse events were mild injection-site reactions. Skin microdialysis revealed elevated VEGF-A protein levels at mRNA-treated sites versus placebo-treated sites from about 4–24 hours post-administration. Enhancements in basal skin blood flow at 4 hours and 7 days post-administration were detected using laser Doppler fluximetry and imaging. Intradermal VEGF-A mRNA was well tolerated and led to local functional VEGF-A protein expression and transient skin blood flow enhancement in men with T2DM. VEGF-A mRNA may have therapeutic potential for regenerative angiogenesis. Chemically modified mRNA is a new approach for therapeutic protein expression that could be applied to angiogenesis. Here the authors show in a phase 1 clinical trial that a modified mRNA encoding VEGF-A is well tolerated in patients with type 2 diabetes.
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Affiliation(s)
- Li-Ming Gan
- Early Clinical Development, IMED Biotech Unit, AstraZeneca Gothenburg, Pepparedsleden 1, 431 50, Mölndal, Sweden. .,Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy at the University of Gothenburg, Arvid Wallgrens backe 1, 413 46, Gothenburg, Sweden. .,Department of Cardiology, Sahlgrenska University Hospital, Blå stråket 5, 413 45, Gothenburg, Sweden.
| | - Maria Lagerström-Fermér
- Early Clinical Development, IMED Biotech Unit, AstraZeneca Gothenburg, Pepparedsleden 1, 431 50, Mölndal, Sweden
| | - Leif G Carlsson
- Cardiovascular, Renal and Metabolism IMED Biotech Unit, AstraZeneca Gothenburg, Pepparedsleden 1, 431 50, Mölndal, Sweden
| | - Cecilia Arfvidsson
- Early Clinical Development, IMED Biotech Unit, AstraZeneca Gothenburg, Pepparedsleden 1, 431 50, Mölndal, Sweden
| | - Ann-Charlotte Egnell
- Early Clinical Development, IMED Biotech Unit, AstraZeneca Gothenburg, Pepparedsleden 1, 431 50, Mölndal, Sweden
| | - Anna Rudvik
- Early Clinical Development, IMED Biotech Unit, AstraZeneca Gothenburg, Pepparedsleden 1, 431 50, Mölndal, Sweden
| | - Magnus Kjaer
- Early Clinical Development, IMED Biotech Unit, AstraZeneca Gothenburg, Pepparedsleden 1, 431 50, Mölndal, Sweden
| | - Anna Collén
- Cardiovascular, Renal and Metabolism IMED Biotech Unit, AstraZeneca Gothenburg, Pepparedsleden 1, 431 50, Mölndal, Sweden
| | | | - John Joyal
- Moderna, Inc., 200 Technology Square, Cambridge, MA, 02139, USA
| | - Ligia Chialda
- PAREXEL Early Phase Clinical Unit, Westend Clinic, House 31, 14050, Berlin, Germany
| | - Thomas Koernicke
- PAREXEL Early Phase Clinical Unit, Westend Clinic, House 31, 14050, Berlin, Germany
| | - Rainard Fuhr
- PAREXEL Early Phase Clinical Unit, Westend Clinic, House 31, 14050, Berlin, Germany
| | - Kenneth R Chien
- Department of Cell and Molecular Biology, Karolinska Institutet, 171 77, Stockholm, Sweden.,Integrated Cardio Metabolic Center, Karolinska Institutet, Blickagången 6, SE-141 57, Huddinge, Sweden
| | - Regina Fritsche-Danielson
- Cardiovascular, Renal and Metabolism IMED Biotech Unit, AstraZeneca Gothenburg, Pepparedsleden 1, 431 50, Mölndal, Sweden
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Collén A, Manhem K, Bergmann Sverrisdóttir Y. HYPERTENSIVE PREGNANCIES– A 35 YEAR FOLLOW-UP ON CARDIOVASCULAR REGULATION – IS THE SYMPATHETIC ACTIVATION STILL PERSISTENT?: 9C.07. J Hypertens 2010. [DOI: 10.1097/01.hjh.0000379525.13466.ec] [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: 11/25/2022]
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12
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Collén A, Saloheimo M, Bailey M, Penttilä M, Pakula TM. Protein production and induction of the unfolded protein response in Trichoderma reesei strain Rut-C30 and its transformant expressing endoglucanase I with a hydrophobic tag. Biotechnol Bioeng 2005; 89:335-44. [PMID: 15619324 DOI: 10.1002/bit.20350] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The effect of induction of protein production was studied in bioreactor cultures of T. reesei strain Rut-C30 and its transformant expressing endoglucanase I core domain (EGI, Cel7B) fused with a hydrophobic peptide tag. The tag was previously designed for efficient purification of the fusion protein in aqueous two-phase separation. The fungi were first grown on glucose-containing minimal medium after which rich medium with lactose as a carbon source was added to induce cellulase production. Production of extracellular protein and cellulase activity and the transcript levels of the major cellulase genes were analyzed during the cultivations. Induction of the cellulase genes followed a similar temporal pattern in both strains. The first phase of induction took place after addition of lactose as soon as glucose was depleted, and the second phase after lactose was consumed. Western analysis showed that a decreased amount of fusion protein was produced in the culture medium compared with the endogenous EGI, although the strain harbors several copies of the recombinant gene under the strong cbh1 promoter. The fusion protein appeared to accumulate within the cells, indicating impaired secretion of the protein. The mRNA levels of the UPR (unfolded protein response) target genes, bip1 and pdi1, and the level of the active form of hac1 transcript encoding the UPR transcription factor increased concurrently with induction of the cellulase genes in both strains, indicating increased requirement of the folding machinery under these conditions. However, only a minor increase in bip1 and pdi1 transcript level was observed in the transformant compared with the parental strain.
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Affiliation(s)
- Anna Collén
- Department of Biochemistry, Center for Chemistry and Chemical Engineering, Lund University, Lund, Sweden
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13
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Dolby V, Collén A, Lundqvist A, Cronet P. Overexpression and functional characterisation of the human melanocortin 4 receptor in Sf9 cells. Protein Expr Purif 2005; 37:455-61. [PMID: 15358370 DOI: 10.1016/j.pep.2004.06.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2004] [Revised: 06/15/2004] [Indexed: 11/26/2022]
Abstract
The human melanocortin 4 receptor (MC4r) was successfully expressed in Sf9 cells using the baculovirus infection system. N- and C-terminally His-tagged receptors generated B(max) values of 14 and 23 pmol receptor/mg membrane protein, respectively. The highest expression level obtained with the C-terminally His-tagged MC4r corresponded to 0.25mg active receptor/litre culture volume. Addition of a viral signal peptide at the N-terminus of the His-tagged MC4r did not improve the expression level. Confocal laser microscopy studies revealed that both the N- and C-terminally tagged MC4r did not accumulate intracellularly and were mainly located in the plasma membrane. The recombinant receptors showed similar affinity for the agonist NDP-MSH (Kd = 11 nM) as to MC4r expressed in mammalian cells. Functional coupling of the highest expressed C-terminal tagged receptor to endogenous Galpha protein was demonstrated through GTPgammaS binding upon agonist stimulation of the receptor. Ki values for the ligands MTII, HS014, alpha-, beta-, and gamma-MSH are comparable to the values obtained for MC4r expressed in mammalian cells.
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Affiliation(s)
- Viveka Dolby
- Department of Biochemistry, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, S-221 00 Lund, Sweden
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14
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Eriksson T, Stals I, Collén A, Tjerneld F, Claeyssens M, Stålbrand H, Brumer H. Heterogeneity of homologously expressed Hypocrea jecorina (Trichoderma reesei) Cel7B catalytic module. ACTA ACUST UNITED AC 2004; 271:1266-76. [PMID: 15030476 DOI: 10.1111/j.1432-1033.2004.04031.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The catalytic module of Hypocrea jecorina (previously Trichoderma reesei) Cel7B was homologously expressed by transformation of strain QM9414. Post-translational modifications in purified Cel7B preparations were analysed by enzymatic digestions, high performance chromatography, mass spectrometry and site-directed mutagenesis. Of the five potential sites found in the wild-type enzyme, only Asn56 and Asn182 were found to be N-glycosylated. GlcNAc(2)Man(5) was identified as the predominant N-glycan, although lesser amounts of GlcNAc(2)Man(7) and glycans carrying a mannophosphodiester bond were also detected. Repartition of neutral and charged glycan structures over the two glycosylation sites mainly accounts for the observed microheterogeneity of the protein. However, partial deamidation of Asn259 and a partially occupied O-glycosylation site give rise to further complexity in enzyme preparations.
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Affiliation(s)
- Torny Eriksson
- Department of Biochemistry, Center for Chemistry and Chemical Engineering, Lund University, Sweden
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15
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Selber K, Tjerneld F, Collén A, Hyytiä T, Nakari-Setälä T, Bailey M, Fagerström R, Kan J, van der Laan J, Penttilä M, Kula MR. Large-scale separation and production of engineered proteins, designed for facilitated recovery in detergent-based aqueous two-phase extraction systems. Process Biochem 2004. [DOI: 10.1016/s0032-9592(03)00198-5] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.7] [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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16
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Hägglund P, Eriksson T, Collén A, Nerinckx W, Claeyssens M, Stålbrand H. A cellulose-binding module of the Trichoderma reesei beta-mannanase Man5A increases the mannan-hydrolysis of complex substrates. J Biotechnol 2003; 101:37-48. [PMID: 12523968 DOI: 10.1016/s0168-1656(02)00290-0] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Endo-beta-1,4-D-mannanases (beta-mannanase; EC 3.2.1.78) are endohydrolases that participate in the degradation of hemicellulose, which is closely associated with cellulose in plant cell walls. The beta-mannanase from Trichoderma reesei (Man5A) is composed of an N-terminal catalytic module and a C-terminal carbohydrate-binding module (CBM). In order to study the properties of the CBM, a construct encoding a mutant of Man5A lacking the part encoding the CBM (Man5ADeltaCBM), was expressed in T. reesei under the regulation of the Aspergillus nidulans gpdA promoter. The wild-type enzyme was expressed in the same way and both proteins were purified to electrophoretic homogeneity using ion-exchange chromatography. Both enzymes hydrolysed mannopentaose, soluble locust bean gum galactomannan and insoluble ivory nut mannan with similar rates. With a mannan/cellulose complex, however, the deletion mutant lacking the CBM showed a significant decrease in hydrolysis. Binding experiments using activity detection of Man5A and Man5ADeltaCBM suggests that the CBM binds to cellulose but not to mannan. Moreover, the binding of Man5A to cellulose was compared with that of an endoglucanase (Cel7B) from T. reesei.
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Affiliation(s)
- Per Hägglund
- Department of Biochemistry, Centre for Chemistry and Chemical Engineering, Lund University, PO Box 124, S-221 00 Lund, Sweden
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17
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Selber K, Collén A, Hyytiä T, Penttilä M, Tjerneld F, Kula MR. Parameters influencing protein extraction for whole broths in detergent based aqueous two-phase systems. Bioseparation 2002; 10:229-36. [PMID: 12233746 DOI: 10.1023/a:1016379111336] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The parameters important for an optimisation of cloud point extraction in technical scale were investigated using a genetically engineered fusion protein derived from endoglucanase I expressed in Trichoderma reesei and the nonionic polyoxyethylene Agrimul NRE 1205. The key parameters are temperature, detergent concentration, and additional salts. These parameters are interdependent, thus there is an optimum in the partition coefficient with respect to detergent concentration and a maximum for the partition coefficient and the yield with respect to temperature. These results were confirmed for the detergent C12E5 to demonstrate that these optima are due to the nature of polyoxyethylenes. Cloud point extraction was found to be only slightly affected by pH. In the case studied extraction of whole broth is favourable for a high yield and partition coefficient, since fusion protein adhering to the cells can be solubilized. However some loss of detergent which remains in the fungal biomass was observed.
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Affiliation(s)
- K Selber
- Institut für Enzymtechnologie, Heinrich-Heine-Universität Düsseldorf, Jülich, Germany
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18
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Collén A, Selber K, Hyytiä T, Persson J, Nakari-Setlä T, Bailey M, Fagerström R, Kula MR, Penttilä M, Stålbrand H, Tjerneld F. Primary recovery of a genetically engineered Trichoderma reesei endoglucanase I (Cel 7B) fusion protein in cloud point extraction systems. Biotechnol Bioeng 2002; 78:385-94. [PMID: 11948445 DOI: 10.1002/bit.10232] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Here we present data to demonstrate how partitioning of a hydrophilic enzyme can be directed to the hydrophobic detergent-enriched phase of an aqueous two-phase system by addition of short stretches of amino acid residues to the protein molecule. The target enzyme was the industrially important endoglucanase I, EGI (endo-1,4-beta-D-glucan-4-glucanohydrolase, EC 3.2.1.4, Cel7B) of Trichoderma reesei. We investigated the partitioning of three EGI variants containing various C-terminal peptide extensions including Trp-Pro motifs of different lengths and localizations. Additionally, a recently developed system composed of the thermoseparating copolymer HM-EOPO was utilized to study the effects of fusion tags. The addition of peptides containing tryptohan residues enhanced the partitioning of EGI to the HM-EOPO-rich phase. The system composed of a nonionic detergent (Agrimul NRE1205) resulted in the highest partition coefficient (K = 31) and yield (90%) with the construct EGI(core-P5)(WP)(4) containing (Trp-Pro)(4) after a short linker stretch. A recombinant strain of T. reesei Rut-C30 for large-scale production was constructed in which the fusion protein EGI(core-P5)(WP)(4) was expressed from the strong promoter of the cellulase gene cbh1. The fusion protein was successfully expressed and secreted from the fungus during shake-flask cultivations. Cultivation in a 28-L bioreactor however, revealed that the fusion protein is sensitive to proteases. Consequently, only low production levels were obtained in large-scale production trials.
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Affiliation(s)
- Anna Collén
- Department of Biochemistry, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, S-221 00, Sweden
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Collén A, Persson J, Linder M, Nakari-Setälä T, Penttilä M, Tjerneld F, Sivars U. A novel two-step extraction method with detergent/polymer systems for primary recovery of the fusion protein endoglucanase I-hydrophobin I. Biochim Biophys Acta 2002; 1569:139-50. [PMID: 11853968 DOI: 10.1016/s0304-4165(01)00244-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Extraction systems for hydrophobically tagged proteins have been developed based on phase separation in aqueous solutions of non-ionic detergents and polymers. The systems have earlier only been applied for separation of membrane proteins. Here, we examine the partitioning and purification of the amphiphilic fusion protein endoglucanase I(core)-hydrophobin I (EGI(core)-HFBI) from culture filtrate originating from a Trichoderma reesei fermentation. The micelle extraction system was formed by mixing the non-ionic detergent Triton X-114 or Triton X-100 with the hydroxypropyl starch polymer, Reppal PES100. The detergent/polymer aqueous two-phase systems resulted in both better separation characteristics and increased robustness compared to cloud point extraction in a Triton X-114/water system. Separation and robustness were characterized for the parameters: temperature, protein and salt additions. In the Triton X-114/Reppal PES100 detergent/polymer system EGI(core)-HFBI strongly partitioned into the micelle-rich phase with a partition coefficient (K) of 15 and was separated from hydrophilic proteins, which preferably partitioned to the polymer phase. After the primary recovery step, EGI(core)-HFBI was quantitatively back-extracted (K(EGIcore-HFBI)=150, yield=99%) into a water phase. In this second step, ethylene oxide-propylene oxide (EOPO) copolymers were added to the micelle-rich phase and temperature-induced phase separation at 55 degrees C was performed. Total recovery of EGI(core)-HFBI after the two separation steps was 90% with a volume reduction of six times. For thermolabile proteins, the back-extraction temperature could be decreased to room temperature by using a hydrophobically modified EOPO copolymer, with slightly lower yield. The addition of thermoseparating co-polymer is a novel approach to remove detergent and effectively releases the fusion protein EGI(core)-HFBI into a water phase.
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Affiliation(s)
- Anna Collén
- Depqartment of Biochemistry, Center for Chemistry and Chemical Engineering, Lund University, Sweden
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20
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Collén A, Penttilä M, Stålbrand H, Tjerneld F, Veide A. Extraction of endoglucanase I (Ce17B) fusion proteins from Trichoderma reesei culture filtrate in a poly(ethylene glycol)-phosphate aqueous two-phase system. J Chromatogr A 2002; 943:55-62. [PMID: 11820281 DOI: 10.1016/s0021-9673(01)01433-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Endoglucanases (EGI) (endo-1,4-beta-D-glucan-4-glucanohydrolase, EC 3.2.1.4, Ce17B) of Trichoderma reesei are industrially important enzymes. Thus, there is a great need for development of a primary recovery method suitable for large-scale utilization. In this study we present a concept applicable for large-scale purification of an EGI fusion protein by one-step extraction in a poly(ethylene glycol) PEG-sodium/potassium phosphate aqueous two-phase system. EGI is a two-module enzyme composed of an N-terminal catalytic module and a C-terminal cellulose binding module (CBM) separated by a glycosylated linker region. Partitioning of six different EGI constructs, containing the C-terminal extensions (WP)2, (WP)4 or the amphiphilic protein hydrophobin I (HFB) of T. reesei instead of the CBM were studied to evaluate if any of the fusions could improve the partition coefficient sufficiently to be suitable for large-scale production. All constructs showed improved partitioning in comparison to full length EGI. The (WP)4 extensions resulted in 26- to 60-fold improvement of partition coefficient. Consequently, a relative minor change in amino acid sequence on the two-module protein EGI improved the partition coefficient significantly in the PEG 4000-sodium/potassium phosphate system. The addition of HFBI to EGI clearly enhanced the partition coefficient (K=1.2) in comparison to full-length EGI (K=0.035). Partitioning of the construct with (WP)4 fused to the catalytic module and a short sequence of the linker [EGI(core-P5)(WP)4] resulted in the highest partition coefficient (K=54) and a yield of 98% in the PEG phase. Gel electrophoresis showed that the construct with the (WP)4 tag attached after a penta-proline linker could be purified from the other bulk proteins by only a single-step separation in the PEG 4000-sodium/potassium phosphate system. This is a major improvement in comparison with the previously studied model (ethylene oxide-propylene oxide)-dextran system. Hence, this construct will be suitable for further optimization of the extraction of the enzyme in a PEG 4000-sodium/potassium phosphate system from culture filtrate.
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Affiliation(s)
- Anna Collén
- Department of Biochemistry, Center for Chemistry and Chemical Engineering, Lund University, Sweden
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Collén A, Ward M, Tjerneld F, Stålbrand H. Genetic engineering of the Trichoderma reesei endoglucanase I (Cel7B) for enhanced partitioning in aqueous two-phase systems containing thermoseparating ethylene oxide--propylene oxide copolymers. J Biotechnol 2001; 87:179-91. [PMID: 11278040 DOI: 10.1016/s0168-1656(01)00241-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Endoglucanases (endo-1,4-beta-D-glucan-4-glucanohydrolase, EC 3.2.1.4) are industrially important enzymes. In this study endoglucanase I (EGI or Cel7B) of the filamentous fungi Trichoderma reesei has been genetically engineered to investigate the influence of tryptophan rich peptide extensions (tags) on partitioning in an aqueous two-phase model system. EGI is a two-domain enzyme and is composed of a N-terminal catalytic domain and a C-terminal cellulose binding domain, separated by a linker. The aim was to find an optimal tag and fusion position, which further could be utilised for large scale extractions. Peptide tags of different length and composition were attached at various localisations of EGI. The fusion proteins were expressed from T. reesei with the use of the gpdA promoter from Aspergillus nidulans. Variations in secreted levels between the engineered proteins were obtained. The partitioning of EGI in an aqueous two-phase system composed of a thermoseparating ethylene oxide-propylene oxide random copolymer (EO(50)PO(50)) and dextran, could be significantly improved by relatively minor genetic engineering. The (Trp-Pro)(4) tag added after a short stretch of the linker, containing five proline residues, gave in the highest partition coefficient of 12.8. The yield in the top phase was 94%. The specific activity was 83% of the specific activity of unmodified EGI on soluble substrate. The efficiency of a tag fused to a protein is shown by the tag efficiency factor (TEF). A hypothetical TEF of 1.0 would indicate full tag exposure and optimal contribution to the protein partitioning by the fused tag. The location of the fusion point after the sequence of five proline residues in the linker of EGI is the most beneficial in two-phase separation. The highest TEF (0.97) was obtained with the (Trp-Pro)(2) tag at this position, indicating full exposure and intactness of the tag. However, the peptide tag composed of (Trp-Pro)(4) improved the partition properties the most but had lower TEF in comparison to (Trp-Pro)(2).
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Affiliation(s)
- A Collén
- Department of Biochemistry, Lund University, PO Box 124, S-221 00 Lund, Sweden
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Collén A, Ward M, Tjerneld F, Stålbrand H. Genetically engineered peptide fusions for improved protein partitioning in aqueous two-phase systems. Effect of fusion localization on endoglucanase I of Trichoderma reesei. J Chromatogr A 2001; 910:275-84. [PMID: 11261722 DOI: 10.1016/s0021-9673(00)01212-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Genetic engineering has been used for fusion of the peptide tag, Trp-Pro-Trp-Pro, on a protein to study the effect on partitioning in aqueous two-phase systems. As target protein for the fusions the cellulase, endoglucanase I (endo-1,4-beta-Dglucan-4-glucanohydrolase, EC 3.2.1.4, EGI, Cel7B) of Trichoderma reesei was used. For the first time a glycosylated two-domain enzyme has been utilized for addition of peptide tags to change partitioning in aqueous two-phase systems. The aim was to find an optimal fusion localization for EGI. The peptide was (1) attached to the C-terminus end of the cellulose binding domain (CBD), (2) inserted in the glycosylated linker region, (3) added after a truncated form of EGI lacking the CBD and a small part of the linker. The different constructs were expressed in the filamentous fungus T. reesei under the gpdA promoter from Aspergillus nidulans. The expression levels were between 60 and 100 mg/l. The partitioning behavior of the fusion proteins was studied in an aqueous two-phase model system composed of the thermoseparating ethylene oxide (EO)-propylene oxide (PO) random copolymer EO-PO (50:50) (EO50PO50) and dextran. The Trp-Pro-Trp-Pro tag was found to direct the fusion protein to the top EO50PO50 phase. The partition coefficient of a fusion protein can be predicted with an empirical correlation based on independent contributions from partitioning of unmodified protein and peptide tag in this model system. The fusion position at the end of the CBD, with the spacer Pro-Gly, was shown to be optimal with respect to partitioning and tag efficiency factor (TEF) was 0.87, where a fully exposed tag would have a TEF of 1.0. Hence, this position can further be utilized for fusion with longer tags. For the other constructs the TEF was only 0.43 and 0.10, for the tag fused to the truncated EGI and in the linker region of the full length EGI, respectively.
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Affiliation(s)
- A Collén
- Department of Biochemistry, Lund University, Sweden
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