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Sluimer J, Van Kuijk K, Demandt JAF, Perales-Paton J, Kuppe C, Jin H, Matic L, Mees B, Hedin U, Biessen EAL, Carmeliet P, Baker AH, Kramann RK, Schurgers LJ, Saez-Rodriguez J. Deficiency of myeloid prolyl hydroxylase domain proteins aggravates atherogenesis via macrophage apoptosis and paracrine fibrotic signaling. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3405] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Atherosclerotic plaque hypoxia is detrimental for macrophage function. Prolyl hydroxylases (PHDs) initiate cellular hypoxic responses, possibly influencing macrophage function in plaque hypoxia. Thus, we aimed to elucidate the role of myeloid PHDs in atherosclerosis.
Methods
Myeloid specific PHD knockout (PHDko) mice were fed high cholesterol diet for 6–12 weeks to induce atherosclerosis. Plaque parameters, e.g. plaque size and macrophage content, were analyzed. Bulk and single cell RNA sequencing was performed on PHD2 BMDMs and plaque macrophages, respectively.
Results
Aortic root plaque size was augmented 2.6fold in PHD2cko, and 1.4-fold in PHD3ko, but not in PHD1ko mice compared to controls. Macrophage apoptosis was promoted in PHD2cko and PHD3ko mice in vitro and in vivo, via the HIF1α/BNIP3 axis. Bulk and single cell RNA data of PHD2cko bone-marrow-derived macrophages (BMDM) and plaque macrophages, respectively, confirmed these findings and were validated by siRNA silencing. Human plaque BNIP3 mRNA associated with plaque necrotic core, suggesting similar adverse effects. Further, PHD2cko plaques displayed enhanced fibrosis, independent of macrophage MMP activity, collagen secretion or proliferation and of SMC collagen production, or proliferation. Rather, PHD2cko BMDMs enhanced fibroblast collagen secretion in a paracrine manner. Nichenet in silico analysis of macrophage-fibroblast communication predicted SPP1 signaling as regulator, in line with enhanced plaque SPP1 protein content, and SPP1 mRNA in TREM2-foamy plaque macrophages, but not in neutrophils.
Conclusion
Myeloid PHD2cko and PHD3ko enhanced plaque growth, macrophage apoptosis, and PHD2cko activated paracrine collagen secretion by fibroblasts.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): NWO, Leducq
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Affiliation(s)
- J Sluimer
- Maastricht University, Cardiovascular Research Institute Maastricht (CARIM), Maastricht, Netherlands (The)
| | - K Van Kuijk
- Maastricht University, Cardiovascular Research Institute Maastricht (CARIM), Maastricht, Netherlands (The)
| | - J A F Demandt
- Maastricht University, Cardiovascular Research Institute Maastricht (CARIM), Maastricht, Netherlands (The)
| | - J Perales-Paton
- University of Heidelberg, BioQuant, Institute for computational biomedicine, Heidelberg, Germany
| | - C Kuppe
- RWTH Aachen University, Division of Nephrology and Clinical Immunology, Aachen, Germany
| | - H Jin
- Maastricht University, Cardiovascular Research Institute Maastricht (CARIM), Maastricht, Netherlands (The)
| | - L Matic
- Karolinska Institute, Stockholm, Sweden
| | - B Mees
- Maastricht University, Cardiovascular Research Institute Maastricht (CARIM), Maastricht, Netherlands (The)
| | - U Hedin
- Karolinska Institute, Stockholm, Sweden
| | - E A L Biessen
- Maastricht University, Cardiovascular Research Institute Maastricht (CARIM), Maastricht, Netherlands (The)
| | - P Carmeliet
- Vesalius Research Centre, Laboratory of Angiogenesis and Neurovascular Link, Leuven, Belgium
| | - A H Baker
- University of Edinburgh, BHF Centre for Cardiovascular Sciences (CVS), Edinburgh, United Kingdom
| | - R K Kramann
- RWTH Aachen University, Division of Nephrology and Clinical Immunology, Aachen, Germany
| | - L J Schurgers
- Maastricht University, Cardiovascular Research Institute Maastricht (CARIM), Maastricht, Netherlands (The)
| | - J Saez-Rodriguez
- University of Heidelberg, BioQuant, Institute for computational biomedicine, Heidelberg, Germany
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van Kuijk K, Demandt JAF, Perales-Patón J, Theelen TL, Kuppe C, Marsch E, de Bruijn J, Jin H, Gijbels MJ, Matic L, Mees BME, Reutelingsperger CPM, Hedin U, Biessen EAL, Carmeliet P, Baker AH, Kramann RK, Schurgers LJ, Saez-Rodriguez J, Sluimer JC. DEFICIENCY OF MYELOID PHD PROTEINS AGGRAVATES ATHEROGENESIS VIA MACROPHAGE APOPTOSIS AND PARACRINE FIBROTIC SIGNALING: Atherogenic effects of myeloid PHD knockdown. Cardiovasc Res 2021; 118:1232-1246. [PMID: 33913468 PMCID: PMC8953448 DOI: 10.1093/cvr/cvab152] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 04/23/2021] [Indexed: 01/10/2023] Open
Abstract
Aims Atherosclerotic plaque hypoxia is detrimental for macrophage function. Prolyl hydroxylases (PHDs) initiate cellular hypoxic responses, possibly influencing macrophage function in plaque hypoxia. Thus, we aimed to elucidate the role of myeloid PHDs in atherosclerosis. Methods and results Myeloid-specific PHD knockout (PHDko) mice were obtained via bone marrow transplantation (PHD1ko, PHD3ko) or conditional knockdown through lysozyme M-driven Cre recombinase (PHD2cko). Mice were fed high cholesterol diet for 6–12 weeks to induce atherosclerosis. Aortic root plaque size was significantly augmented 2.6-fold in PHD2cko, and 1.4-fold in PHD3ko compared to controls but was unchanged in PHD1ko mice. Macrophage apoptosis was promoted in PHD2cko and PHD3ko mice in vitro and in vivo, via the hypoxia-inducible factor (HIF) 1α/BNIP3 axis. Bulk and single-cell RNA data of PHD2cko bone marrow-derived macrophages (BMDMs) and plaque macrophages, respectively, showed enhanced HIF1α/BNIP3 signalling, which was validated in vitro by siRNA silencing. Human plaque BNIP3 mRNA was positively associated with plaque necrotic core size, suggesting similar pro-apoptotic effects in human. Furthermore, PHD2cko plaques displayed enhanced fibrosis, while macrophage collagen breakdown by matrix metalloproteinases, collagen production, and proliferation were unaltered. Instead, PHD2cko BMDMs enhanced fibroblast collagen secretion in a paracrine manner. In silico analysis of macrophage-fibroblast communication predicted SPP1 (osteopontin) signalling as regulator, which was corroborated by enhanced plaque SPP1 protein in vivo. Increased SPP1 mRNA expression upon PHD2cko was preferentially observed in foamy plaque macrophages expressing ‘triggering receptor expressed on myeloid cells-2’ (TREM2hi) evidenced by single-cell RNA, but not in neutrophils. This confirmed enhanced fibrotic signalling by PHD2cko macrophages to fibroblasts, in vitro as well as in vivo. Conclusion Myeloid PHD2cko and PHD3ko enhanced atherosclerotic plaque growth and macrophage apoptosis, while PHD2cko macrophages further activated collagen secretion by fibroblasts in vitro, likely via paracrine SPP1 signalling through TREM2hi macrophages.
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Affiliation(s)
- K van Kuijk
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC), Maastricht, Netherlands.,Department of Pathology, MUMC
| | - J A F Demandt
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC), Maastricht, Netherlands.,Department of Pathology, MUMC
| | - J Perales-Patón
- Institute for Computational Biomedicine, Faculty of Medicine, Heidelberg University, and Heidelberg University Hospital, Bioquant, Heidelberg, Germany.,Institute of Experimental Medicine and Systems Biology, RWTH Aachen University, Aachen, Germany.,Joint Research Centre for Computational Biomedicine (JRC-COMBINE), Faculty of Medicine, RWTH Aachen University, Aachen, Germany
| | - T L Theelen
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC), Maastricht, Netherlands.,Department of Pathology, MUMC
| | - C Kuppe
- Institute of Experimental Medicine and Systems Biology, RWTH Aachen University, Aachen, Germany
| | - E Marsch
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC), Maastricht, Netherlands.,Department of Pathology, MUMC
| | - J de Bruijn
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC), Maastricht, Netherlands.,Department of Pathology, MUMC
| | - H Jin
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC), Maastricht, Netherlands.,Department of Pathology, MUMC
| | - M J Gijbels
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC), Maastricht, Netherlands.,Department of Pathology, MUMC.,Department of Molecular Genetics, MUMC.,Department of Experimental Vascular Biology, Amsterdam UMC, Amsterdam, The Netherlands.,GROW- School for Oncology and Developmental Biology, MUMC
| | - L Matic
- Dept of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden
| | - B M E Mees
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC), Maastricht, Netherlands.,Department of Vascular Surgery, MUMC
| | - C P M Reutelingsperger
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC), Maastricht, Netherlands.,Department of Biochemistry, MUMC
| | - U Hedin
- Dept of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden
| | - E A L Biessen
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC), Maastricht, Netherlands.,Department of Pathology, MUMC.,Institute for Molecular Cardiovascular Research, RWTH Aachen University, Aachen, Germany
| | - P Carmeliet
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, VIB Center for Cancer biology, B-3000 Leuven, Belgium
| | - A H Baker
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC), Maastricht, Netherlands.,BHF Centre for Cardiovascular Sciences (CVS), University of Edinburgh, Edinburgh, UK
| | - R K Kramann
- Institute of Experimental Medicine and Systems Biology, RWTH Aachen University, Aachen, Germany.,Department of Internal Medicine, Nephrology and Transplantation, Erasmus Medical Center, Rotterdam, The Netherlands
| | - L J Schurgers
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC), Maastricht, Netherlands.,Institute of Experimental Medicine and Systems Biology, RWTH Aachen University, Aachen, Germany.,Department of Biochemistry, MUMC
| | - J Saez-Rodriguez
- Institute for Computational Biomedicine, Faculty of Medicine, Heidelberg University, and Heidelberg University Hospital, Bioquant, Heidelberg, Germany.,Joint Research Centre for Computational Biomedicine (JRC-COMBINE), Faculty of Medicine, RWTH Aachen University, Aachen, Germany
| | - J C Sluimer
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC), Maastricht, Netherlands.,Department of Pathology, MUMC.,BHF Centre for Cardiovascular Sciences (CVS), University of Edinburgh, Edinburgh, UK
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Yasuda G, Kinguchi S, Katsumata M, Hirawa N, Shibata K, Van Roeyen CRC, Drescher A, Hess K, Boor P, Martin IV, Zok S, Braun G, Kuppe C, Liehn E, Weiskirchen R, Eriksson U, Gross O, Floege J, Eitner F, Ostendorf T, Mose FH, Jensen JM, Therwani S, Mortensen J, Hansen AB, Bech JN, Pedersen EB, Vink EE, De Boer A, Hoogduin JM, Leiner T, Bots ML, Blankestijn PJ, Silva Sousa H, Branco P, Dores H, Carvalho MS, Goncalves P, Almeida MS, Andrade MJ, Pereira M, Gaspar MA, Mendes M, Barata JD. HYPERTENSION: EXPERIMENTAL. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu137] [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: 11/13/2022] Open
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