Mining the Plasma Proteome for Insights into the Molecular Pathology of Pulmonary Arterial Hypertension
Rationale: Pulmonary arterial hypertension (PAH) is characterized by structural remodeling of pulmonary arteries and arterioles. Underlying biological processes are likely reflected in a perturbation of circulating proteins. Objectives: To quantify and analyze the plasma proteome of patients with PAH using inherited genetic variation to inform on underlying molecular drivers. Methods: An aptamer-based assay was used to measure plasma proteins in 357 patients with idiopathic or heritable PAH, 103 healthy volunteers, and 23 relatives of patients with PAH. In discovery and replication subgroups, the plasma proteomes of PAH and healthy individuals were compared, and the relationship to transplantation-free survival in PAH was determined. To examine causal relationships to PAH, protein quantitative trait loci (pQTL) that influenced protein levels in the patient population were used as instruments for Mendelian randomization (MR) analysis. Measurements and Main Results: From 4,152 annotated plasma proteins, levels of 208 differed between patients with PAH and healthy subjects, and 49 predicted long-term survival. MR based on cis-pQTL located in proximity to the encoding gene for proteins that were prognostic and distinguished PAH from health estimated an adverse effect for higher levels of netrin-4 (odds ratio [OR], 1.55; 95% confidence interval [CI], 1.16-2.08) and a protective effect for higher levels of thrombospondin-2 (OR, 0.83; 95% CI, 0.74-0.94) on PAH. Both proteins tracked the development of PAH in previously healthy relatives and changes in thrombospondin-2 associated with pulmonary arterial pressure at disease onset. Conclusions: Integrated analysis of the plasma proteome and genome implicates two secreted matrix-binding proteins, netrin-4 and thrombospondin-2, in the pathobiology of PAH.
| Errataetall: |
CommentIn: Am J Respir Crit Care Med. 2022 Jun 15;205(12):1377-1379. - PMID 35452380 |
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| Medienart: |
E-Artikel |
| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:205 |
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| Enthalten in: |
American journal of respiratory and critical care medicine - 205(2022), 12 vom: 15. Juni, Seite 1449-1460 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Harbaum, Lars [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 17.06.2022 Date Revised 16.02.2024 published: Print CommentIn: Am J Respir Crit Care Med. 2022 Jun 15;205(12):1377-1379. - PMID 35452380 Citation Status MEDLINE |
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| doi: |
10.1164/rccm.202109-2106OC |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM339240814 |
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| 100 | 1 | |a Harbaum, Lars |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Mining the Plasma Proteome for Insights into the Molecular Pathology of Pulmonary Arterial Hypertension |
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| 500 | |a Date Revised 16.02.2024 | ||
| 500 | |a published: Print | ||
| 500 | |a CommentIn: Am J Respir Crit Care Med. 2022 Jun 15;205(12):1377-1379. - PMID 35452380 | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Rationale: Pulmonary arterial hypertension (PAH) is characterized by structural remodeling of pulmonary arteries and arterioles. Underlying biological processes are likely reflected in a perturbation of circulating proteins. Objectives: To quantify and analyze the plasma proteome of patients with PAH using inherited genetic variation to inform on underlying molecular drivers. Methods: An aptamer-based assay was used to measure plasma proteins in 357 patients with idiopathic or heritable PAH, 103 healthy volunteers, and 23 relatives of patients with PAH. In discovery and replication subgroups, the plasma proteomes of PAH and healthy individuals were compared, and the relationship to transplantation-free survival in PAH was determined. To examine causal relationships to PAH, protein quantitative trait loci (pQTL) that influenced protein levels in the patient population were used as instruments for Mendelian randomization (MR) analysis. Measurements and Main Results: From 4,152 annotated plasma proteins, levels of 208 differed between patients with PAH and healthy subjects, and 49 predicted long-term survival. MR based on cis-pQTL located in proximity to the encoding gene for proteins that were prognostic and distinguished PAH from health estimated an adverse effect for higher levels of netrin-4 (odds ratio [OR], 1.55; 95% confidence interval [CI], 1.16-2.08) and a protective effect for higher levels of thrombospondin-2 (OR, 0.83; 95% CI, 0.74-0.94) on PAH. Both proteins tracked the development of PAH in previously healthy relatives and changes in thrombospondin-2 associated with pulmonary arterial pressure at disease onset. Conclusions: Integrated analysis of the plasma proteome and genome implicates two secreted matrix-binding proteins, netrin-4 and thrombospondin-2, in the pathobiology of PAH | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, N.I.H., Extramural | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a Mendelian randomization | |
| 650 | 4 | |a case-control studies | |
| 650 | 4 | |a genome | |
| 650 | 4 | |a protein quantitative trait loci | |
| 650 | 7 | |a Blood Proteins |2 NLM | |
| 650 | 7 | |a Netrins |2 NLM | |
| 650 | 7 | |a Proteome |2 NLM | |
| 650 | 7 | |a Thrombospondins |2 NLM | |
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| 700 | 1 | |a Karnes, Jason H |e verfasserin |4 aut | |
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| 700 | 1 | |a Novoyatleva, Tatyana |e verfasserin |4 aut | |
| 700 | 1 | |a Schermuly, Ralph T |e verfasserin |4 aut | |
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| 700 | 1 | |a Kiely, David G |e verfasserin |4 aut | |
| 700 | 1 | |a Howard, Luke S |e verfasserin |4 aut | |
| 700 | 1 | |a Swietlik, Emilia M |e verfasserin |4 aut | |
| 700 | 1 | |a Gräf, Stefan |e verfasserin |4 aut | |
| 700 | 1 | |a Pietzner, Maik |e verfasserin |4 aut | |
| 700 | 1 | |a Morrell, Nicholas W |e verfasserin |4 aut | |
| 700 | 1 | |a Wilkins, Martin R |e verfasserin |4 aut | |
| 700 | 0 | |a U.K. National Institute for Health Research BioResource Rare Diseases Consortium, U.K. Pulmonary Arterial Hypertension Cohort Study Consortium, and U.S. Pulmonary Arterial Hypertension Biobank Consortium |e verfasserin |4 aut | |
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