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Borrell-Pages M, Luquero A, Vilahur G, Padró T, Badimon L. Canonical Wnt pathway and the LDL receptor superfamily in neuronal cholesterol homeostasis and function. Cardiovasc Res 2024; 120:140-151. [PMID: 37882606 DOI: 10.1093/cvr/cvad159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 07/13/2023] [Accepted: 09/04/2023] [Indexed: 10/27/2023] Open
Abstract
AIMS There is little information on the regulation of cholesterol homeostasis in the brain. Whether cholesterol crosses the blood-brain barrier is under investigation, but the present understanding is that cholesterol metabolism in the brain is independent from that in peripheral tissues. Lipoprotein receptors from the LDL receptor family (LRPs) have key roles in lipid particle accumulation in cells involved in vascular and cardiac pathophysiology; however, their function on neural cells is unknown. METHODS AND RESULTS The expression of LRP5 and the components and targets of its downstream signalling pathway, the canonical Wnt pathway, including β-catenin, LEF1, VEGF, OPN, MMP7, and ADAM10, is analysed in the brains of Wt and Lrp5-/- mice and in a neuroblastoma cell line. LRP5 expression is increased in a time- and dose-dependent manner after lipid loading in neuronal cells; however, it does not participate in cholesterol homeostasis as shown by intracellular lipid accumulation analyses. Neurons challenged with staurosporin and H2O2 display an anti-apoptotic protective role for LRP5. CONCLUSIONS For the first time, it has been shown that neurons can accumulate intracellular lipids and lipid uptake is performed mainly by the LDLR, while CD36, LRP1, and LRP5 do not play a major role. In addition, it has been shown that LRP5 triggers the canonical Wnt pathway in neuronal cells to generate pro-survival signals. Finally, Lrp5-/- mice have maintained expression of LRP5 only in the brain supporting the biological plausible concept of the need of brain LRP5 to elicit pro-survival processes and embryonic viability.
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Affiliation(s)
- Maria Borrell-Pages
- Cardiovascular Program ICCC, Sant Pau Institute for Biomedical Research (IIB-Sant Pau), C/Sant Antoni Maria Claret 167, Barcelona 08025, Spain
- CIBER-CV, Av. Monforte de Lemos, 3-5, 28029 Madrid, Spain
| | - Aureli Luquero
- Cardiovascular Program ICCC, Sant Pau Institute for Biomedical Research (IIB-Sant Pau), C/Sant Antoni Maria Claret 167, Barcelona 08025, Spain
- CIBER-CV, Av. Monforte de Lemos, 3-5, 28029 Madrid, Spain
| | - Gemma Vilahur
- Cardiovascular Program ICCC, Sant Pau Institute for Biomedical Research (IIB-Sant Pau), C/Sant Antoni Maria Claret 167, Barcelona 08025, Spain
- CIBER-CV, Av. Monforte de Lemos, 3-5, 28029 Madrid, Spain
| | - Teresa Padró
- Cardiovascular Program ICCC, Sant Pau Institute for Biomedical Research (IIB-Sant Pau), C/Sant Antoni Maria Claret 167, Barcelona 08025, Spain
- CIBER-CV, Av. Monforte de Lemos, 3-5, 28029 Madrid, Spain
| | - Lina Badimon
- Cardiovascular Program ICCC, Sant Pau Institute for Biomedical Research (IIB-Sant Pau), C/Sant Antoni Maria Claret 167, Barcelona 08025, Spain
- CIBER-CV, Av. Monforte de Lemos, 3-5, 28029 Madrid, Spain
- Cardiovascular Research Chair, Universitat Autònoma de Barcelona, Plaça Cívica, 08193 Bellaterra, Barcelona, Spain
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2
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GBA1-dependent membrane glucosylceramide reprogramming promotes liver cancer metastasis via activation of the Wnt/β-catenin signalling pathway. Cell Death Dis 2022; 13:508. [PMID: 35637196 PMCID: PMC9151913 DOI: 10.1038/s41419-022-04968-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 05/15/2022] [Accepted: 05/23/2022] [Indexed: 12/14/2022]
Abstract
The effect of glucosylceramide (GlcCer) reprogramming on liver cancer metastasis remains poorly understood. In this study, we demonstrated that the protein expression of GBA1, which catalyses the conversion of GlcCer to ceramide, was downregulated in liver cancer tissue. A clinical relevance analysis revealed that low expression of GBA1 was associated with the metastatic potential of liver cancer cells. Furthermore, loss- and gain-of-function studies confirmed that low expression of GBA1 promoted metastasis of liver cancer both in vitro and in vivo. Mechanistic studies indicated that low expression of GBA1 enhanced the metastatic ability of liver cancer by promoting the epithelial-mesenchymal transition (EMT), in which Wnt signalling pathway is involved. In the plasma membrane (PM), GBA1-dependent GlcCer reprogramming increased LRP6 location in the PM leading to an interaction between GlcCer and LRP6, subsequently promoting LRP6 phosphorylation at Ser1490, and finally activating the Wnt/β-catenin signalling pathway. To our knowledge, this is the first time to be found that GlcCer interacted with a protein. In addition, the results of mass spectrometry indicated that GlcCer d18:1/18:0 was the most notably increased studied species in the PM when GBA1 was downregulated, suggesting that GlcCer d18:1/18:0 may be the major functional lipid that promotes GBA1-dependent liver cancer metastasis. Thus, GBA1-mediated GlcCer reprogramming in the PM promotes metastasis of liver cancer via activation of the Wnt/β-catenin signalling pathway, upregulation of GBA1 may be a potential therapeutic strategy to combat liver cancer metastasis.
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3
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Luquero A, Vilahur G, Casani L, Badimon L, Borrell-Pages M. Differential cholesterol uptake in liver cells: A role for PCSK9. FASEB J 2022; 36:e22291. [PMID: 35344222 DOI: 10.1096/fj.202101660rr] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 03/11/2022] [Accepted: 03/20/2022] [Indexed: 12/21/2022]
Abstract
The clearance of low-density lipoprotein (LDL) particles from the circulation is regulated by the LDL receptor (LDLR) and proprotein convertase subtilisin/kexin 9 (PCSK9) interaction. Its disruption reduces blood cholesterol levels and delays atherosclerosis progression. Whether other members of the LDLR superfamily are in vivo targets of PCSK9 has been poorly explored. The aim of this work was to study the interaction between PCSK9 and members of the LDLR superfamily in the regulation of liver cholesterol homeostasis in an in vivo low-density lipoprotein receptor related protein 5 (LRP5) deficient mice model challenged with high-fat diet. Our results show that Wt and Lrp5-/- mice fed a hypercholesterolemic diet (HC) have increased cholesterol ester accumulation and decreased liver LDLR and LRP5 gene and protein expression. Very low-density lipoprotein receptor (VLDLR), LRP6, LRP2, and LRP1 expression levels were analyzed in liver samples and show that they do not participate in Lrp5-/- liver cholesterol uptake. Immunoprecipitation experiments show that LRP5 forms a complex with PCSK9 in liver-specific fat-storing stellate cells but not in structural HepG2 cells. Hepatic stellate cells silenced for LRP5 and/or PCSK9 expression and challenged with lipids show reduced cholesterol ester accumulation, indicating that both proteins are involved in lipid processing in the liver. Our results indicate that cholesterol esters accumulate in livers of Wt mice in a LDLR-family-members dependent manner as VLDLR, LRP2, and LRP6 show increased expression in HC mice. However, this increase is lost in livers of Lrp5-/- mice, where scavenger receptors are involved in cholesterol uptake. PCSK9 expression is strongly downregulated in mice livers after HC feeding. However PCSK9 and LRP5 bind in the cytoplasm of fat storing liver cells, indicating that this PCSK9-LRP5 interaction is cell-type specific and that both proteins contribute to lipid uptake.
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Affiliation(s)
- Aureli Luquero
- Cardiovascular Program ICCC, Hospital de la Santa Creu i Sant Pau Research Institute, IIB-Sant Pau, Barcelona, Spain
| | - Gemma Vilahur
- Cardiovascular Program ICCC, Hospital de la Santa Creu i Sant Pau Research Institute, IIB-Sant Pau, Barcelona, Spain.,CIBER-CV, Instituto de Salud Carlos III, Spain
| | - Laura Casani
- Cardiovascular Program ICCC, Hospital de la Santa Creu i Sant Pau Research Institute, IIB-Sant Pau, Barcelona, Spain
| | - Lina Badimon
- Cardiovascular Program ICCC, Hospital de la Santa Creu i Sant Pau Research Institute, IIB-Sant Pau, Barcelona, Spain.,CIBER-CV, Instituto de Salud Carlos III, Spain.,Cardiovascular Research Chair, UAB, Barcelona, Spain
| | - Maria Borrell-Pages
- Cardiovascular Program ICCC, Hospital de la Santa Creu i Sant Pau Research Institute, IIB-Sant Pau, Barcelona, Spain.,CIBER-CV, Instituto de Salud Carlos III, Spain
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Liu Y, Neogi A, Mani A. The role of Wnt signalling in development of coronary artery disease and its risk factors. Open Biol 2020; 10:200128. [PMID: 33081636 PMCID: PMC7653355 DOI: 10.1098/rsob.200128] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 09/23/2020] [Indexed: 02/05/2023] Open
Abstract
The Wnt signalling pathways are composed of a highly conserved cascade of events that govern cell differentiation, apoptosis and cell orientation. Three major and distinct Wnt signalling pathways have been characterized: the canonical Wnt pathway (or Wnt/β-catenin pathway), the non-canonical planar cell polarity pathway and the non-canonical Wnt/Ca2+ pathway. Altered Wnt signalling pathway has been associated with diverse diseases such as disorders of bone density, different malignancies, cardiac malformations and heart failure. Coronary artery disease is the most common type of heart disease in the United States. Atherosclerosis is a multi-step pathological process, which starts with lipid deposition and endothelial cell dysfunction, triggering inflammatory reactions, followed by recruitment and aggregation of monocytes. Subsequently, monocytes differentiate into tissue-resident macrophages and transform into foam cells by the uptake of modified low-density lipoprotein. Meanwhile, further accumulations of lipids, infiltration and proliferation of vascular smooth muscle cells, and deposition of the extracellular matrix occur under the intima. An atheromatous plaque or hyperplasia of the intima and media is eventually formed, resulting in luminal narrowing and reduced blood flow to the myocardium, leading to chest pain, angina and even myocardial infarction. The Wnt pathway participates in all different stages of this process, from endothelial dysfunction to lipid deposit, and from initial inflammation to plaque formation. Here, we focus on the role of Wnt cascade in pathophysiological mechanisms that take part in coronary artery disease from both clinical and experimental perspectives.
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Affiliation(s)
- Ya Liu
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Arpita Neogi
- Yale Cardiovascular Genetics Program, Yale University, New Haven, CT, USA
| | - Arya Mani
- Yale Cardiovascular Genetics Program, Yale University, New Haven, CT, USA
- Yale Cardiovascular Research Center, Department of Medicine, Yale University, New Haven, CT, USA
- Department of Genetics, Yale University School of Medicine, Yale University, New Haven, CT, USA
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Badimon L, Luquero A, Crespo J, Peña E, Borrell-Pages M. PCSK9 and LRP5 in macrophage lipid internalization and inflammation. Cardiovasc Res 2020; 117:2054-2068. [PMID: 32991689 DOI: 10.1093/cvr/cvaa254] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 06/26/2020] [Accepted: 09/15/2020] [Indexed: 01/20/2023] Open
Abstract
AIMS Atherosclerosis, the leading cause of cardiovascular diseases, is driven by high blood cholesterol levels and chronic inflammation. Low-density lipoprotein receptors (LDLR) play a critical role in regulating blood cholesterol levels by binding to and clearing LDLs from the circulation. The disruption of the interaction between proprotein convertase subtilisin/kexin 9 (PCSK9) and LDLR reduces blood cholesterol levels. It is not well known whether other members of the LDLR superfamily may be targets of PCSK9. The aim of this work was to determine if LDLR-related protein 5 (LRP5) is a PCSK9 target and to study the role of PCSK9 and LRP5 in foam cell formation and lipid accumulation. METHODS AND RESULTS Primary cultures of human inflammatory cells (monocytes and macrophages) were silenced for LRP5 or PCSK9 and challenged with LDLs. We first show that LRP5 is needed for macrophage lipid uptake since LRP5-silenced macrophages show less intracellular CE accumulation. In macrophages, internalization of LRP5-bound LDL is already highly evident after 5 h of LDL incubation and lasts up to 24 h; however, in the absence of both LRP5 and PCSK9, there is a strong reduction of CE accumulation indicating a role for both proteins in lipid uptake. Immunoprecipitation experiments show that LRP5 forms a complex with PCSK9 in lipid-loaded macrophages. Finally, PCSK9 participates in TLR4/NFkB signalling; a decreased TLR4 protein expression levels and a decreased nuclear translocation of NFκB were detected in PCSK9 silenced cells after lipid loading, indicating a downregulation of the TLR4/NFκB pathway. CONCLUSION Our results show that both LRP5 and PCSK9 participate in lipid uptake in macrophages. In the absence of LRP5, there is a reduced release of PCSK9 indicating that LRP5 also participates in the mechanism of release of soluble PCSK9. Furthermore, PCSK9 up-regulates TLR4/NFκB favouring inflammation.
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Affiliation(s)
- Lina Badimon
- CIBER-CV, Instituto de Salud Carlos III, Spain.,Cardiovascular Research Chair, UAB, Barcelona, Spain.,Cardiovascular Research ICCC, IR-Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Carrer Sant Antoni Maria Claret 165, 08025 Barcelona, Spain
| | - Aureli Luquero
- Cardiovascular Research ICCC, IR-Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Carrer Sant Antoni Maria Claret 165, 08025 Barcelona, Spain
| | - Javier Crespo
- Cardiovascular Research ICCC, IR-Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Carrer Sant Antoni Maria Claret 165, 08025 Barcelona, Spain
| | - Esther Peña
- Cardiovascular Research ICCC, IR-Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Carrer Sant Antoni Maria Claret 165, 08025 Barcelona, Spain
| | - Maria Borrell-Pages
- CIBER-CV, Instituto de Salud Carlos III, Spain.,Cardiovascular Research ICCC, IR-Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Carrer Sant Antoni Maria Claret 165, 08025 Barcelona, Spain
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A novel role of LRP5 in tubulointerstitial fibrosis through activating TGF-β/Smad signaling. Signal Transduct Target Ther 2020; 5:45. [PMID: 32345960 PMCID: PMC7188863 DOI: 10.1038/s41392-020-0142-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/10/2020] [Accepted: 02/19/2020] [Indexed: 02/07/2023] Open
Abstract
Previous studies by us and others demonstrated that activation of Wnt/β-catenin signaling plays a pathogenic role in chronic kidney diseases (CKD). Wnt co-receptor LRP5 variants are reported to associate with autosomal dominant polycystic kidney disease; but their exact roles in this disease and renal fibrosis have not been explored. Here, we observed the upregulation of LRP5 in the renal tubules of both type 1 and type 2 diabetic models and of an obstructive nephropathy model. In the obstructed kidneys, Lrp5 knockout significantly ameliorated tubulointerstitial fibrosis and tubular injury without changing Wnt/β-catenin signaling. Instead, decreased levels of TGF-β1 and TGF-β receptors (TβRs) were detected in Lrp5 knockout kidneys, followed by attenuated activation and nuclear translocation of Smad2/3 in the renal tubules, suggesting a regulatory effect of LRP5 on TGF-β/Smad signaling. In consistent with this hypothesis, LRP5 overexpression resulted in enhanced TGF-β/Smad signaling activation in renal tubule epithelial cells. Furthermore, LRP5 was co-immunoprecipitated with TβRI and TβRII, and its extracellular domain was essential for interacting with TβRs and for its pro-fibrotic activity. In addition to stabilizing TβRs, LRP5 increased the basal membrane presentation and TGF-β1-induced internalization of these receptors. Notably, TGF-β1 also induced LRP5 internalization. These findings indicate that LRP5 promotes tubulointerstitial fibrosis, at least partially, via direct modulation of TGF-β/Smad signaling, a novel, Wnt-independent function.
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Malsin ES, Kim S, Lam AP, Gottardi CJ. Macrophages as a Source and Recipient of Wnt Signals. Front Immunol 2019; 10:1813. [PMID: 31417574 PMCID: PMC6685136 DOI: 10.3389/fimmu.2019.01813] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 07/18/2019] [Indexed: 12/14/2022] Open
Abstract
Macrophages are often viewed through the lens of their core functions, but recent transcriptomic studies reveal them to be largely distinct across tissue types. While these differences appear to be shaped by their local environment, the key signals that drive these transcriptional differences remain unclear. Since Wnt signaling plays established roles in cell fate decisions, and tissue patterning during development and tissue repair after injury, we consider evidence that Wnt signals both target and are affected by macrophage functions. We propose that the Wnt gradients present in developing and adult tissues effectively shape macrophage fates and phenotypes. We also highlight evidence that macrophages, through an ability to dispatch Wnt signals, may couple tissue debridement and matrix remodeling with stem cell activation and tissue repair.
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Affiliation(s)
- Elizabeth S Malsin
- Department of Pulmonary Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Seokjo Kim
- Department of Pulmonary Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Anna P Lam
- Department of Pulmonary Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Cara J Gottardi
- Department of Pulmonary Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
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8
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Badimon L, Casaní L, Camino-Lopez S, Juan-Babot O, Borrell-Pages M. GSK3β inhibition and canonical Wnt signaling in mice hearts after myocardial ischemic damage. PLoS One 2019; 14:e0218098. [PMID: 31220102 PMCID: PMC6586285 DOI: 10.1371/journal.pone.0218098] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 05/25/2019] [Indexed: 12/22/2022] Open
Abstract
Aims Myocardial infarction induces myocardial injury and tissue damage. During myocardial infarction strong cellular response is initiated to salvage the damaged tissues. This response is associated with the induction of different signaling pathways. Of these, the canonical Wnt signaling is increasingly important for its prosurvival cellular role, making it a good candidate for the search of new molecular targets to develop therapies to prevent heart failure in infarcted patients. Methods Herein we report that GSK3β regulates the canonical Wnt signaling in C57Bl6 mice hearts. GSK3β is a canonical Wnt pathway inhibitor. Using GSK3β inhibitors and inducing myocardial injury (MI) in Lrp5-/- mice model we show that GSK3β phosphorylation levels regulate downstream canonical Wnt pathway genes in the ischemic heart. In the setting of MI, myocardial damage assessment usually correlates with functional and clinical outcomes. Therefore, we measured myocardial injury size in Wt and Lrp5-/- mice in the presence and absence of two different GSK3 inhibitors prior to MI. Myocardial injury was independent of GSK3 inhibitor treatments and GSK3β expression levels. Results These studies support a central role for GSK3β in the activation of the canonical Wnt pathway in the Wt heart. Although LRP5 is protective against myocardial injury, GSK3β expression levels do not regulate heart damage.
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Affiliation(s)
- Lina Badimon
- Cardiovascular Program ICCC, Institut de Recerca de l’-Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- CIBER-CV, Instituto de Salud Carlos III, Madrid, Spain
- Cardiovascular Research Chair, UAB, Barcelona, Spain
| | - Laura Casaní
- Cardiovascular Program ICCC, Institut de Recerca de l’-Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Sandra Camino-Lopez
- Cardiovascular Program ICCC, Institut de Recerca de l’-Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Oriol Juan-Babot
- Cardiovascular Program ICCC, Institut de Recerca de l’-Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Maria Borrell-Pages
- Cardiovascular Program ICCC, Institut de Recerca de l’-Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- CIBER-CV, Instituto de Salud Carlos III, Madrid, Spain
- * E-mail:
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Zhou X, Zhu W, Shen M, He Y, Peng C, Kuang Y, Su J, Zhao S, Chen X, Chen W. Frizzled-related proteins 4 (SFRP4) rs1802073G allele predicts the elevated serum lipid levels during acitretin treatment in psoriatic patients from Hunan, China. PeerJ 2018; 6:e4637. [PMID: 29666772 PMCID: PMC5900929 DOI: 10.7717/peerj.4637] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 03/27/2018] [Indexed: 12/14/2022] Open
Abstract
Background Acitretin is a second-generation synthetic retinoid, and is widely used for treating the severe psoriasis vulgaris. However, it should be chosen with caution for its cardiovascular risk, and it is reported that acitretin may increase the serum lipids. The purpose of this study is to investigate the relationship between the Frizzled-related proteins 4 (SFRP4) rs1802073 polymorphism and the changes of serum lipids in Chinese psoriatic patients during the treatment with acitretin. Methods In our study, 100 psoriatic patients were recruited systematically treated with acitretin (30 mg/day) for at least eight weeks. Data of the patients’ demographic and clinical characteristics and the results of serum triglyceride (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C) were collected pre- and post-treatment. Results A total of 84 psoriatic patients were enrolled and divided into three groups by SFRP4 rs1802073 genotypes. The patients who carried with TT genotype had maintained levels of TG and LDL-C after acitretin treatment, while patients with GG/GT genotypes had significantly elevated levels of serum TG and LDL-C compared to the TT genotype (ΔTG%: 27.53 ± 59.13 vs −1.47 ± 37.79, p = 0.026, ΔLDL-C%: 10.62 ± 26.57 vs −1.29 ± 17.07, p = 0.042). The association of rs1802073 with TG and LDL-C profiles remained significant after adjusting for age, gender, and body mass index. Although without significance, the pre-post change in serum level of TC across rs1802073 GG/GT genotypes demonstrated a trend similar to TG and LDL, and the serum level of HDL-C demonstrated a trend opposite to TG, TC and LDL. Conclusions Our results demonstrated that SFRP4 rs1802073 polymorphism was found to be associated with elevated serum lipid levels after acitretin treatment, and it may serve as a genetic marker of safe and precise treatment for individual psoriatic patients.
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Affiliation(s)
- Xingchen Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.,Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, China
| | - Wu Zhu
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, China
| | - Minxue Shen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, China
| | - Yijing He
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, China
| | - Cong Peng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, China
| | - Yehong Kuang
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, China
| | - Juan Su
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, China
| | - Shuang Zhao
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, China
| | - Xiang Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, China
| | - Wangqing Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, China
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10
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Foulquier S, Daskalopoulos EP, Lluri G, Hermans KCM, Deb A, Blankesteijn WM. WNT Signaling in Cardiac and Vascular Disease. Pharmacol Rev 2018; 70:68-141. [PMID: 29247129 PMCID: PMC6040091 DOI: 10.1124/pr.117.013896] [Citation(s) in RCA: 216] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
WNT signaling is an elaborate and complex collection of signal transduction pathways mediated by multiple signaling molecules. WNT signaling is critically important for developmental processes, including cell proliferation, differentiation and tissue patterning. Little WNT signaling activity is present in the cardiovascular system of healthy adults, but reactivation of the pathway is observed in many pathologies of heart and blood vessels. The high prevalence of these pathologies and their significant contribution to human disease burden has raised interest in WNT signaling as a potential target for therapeutic intervention. In this review, we first will focus on the constituents of the pathway and their regulation and the different signaling routes. Subsequently, the role of WNT signaling in cardiovascular development is addressed, followed by a detailed discussion of its involvement in vascular and cardiac disease. After highlighting the crosstalk between WNT, transforming growth factor-β and angiotensin II signaling, and the emerging role of WNT signaling in the regulation of stem cells, we provide an overview of drugs targeting the pathway at different levels. From the combined studies we conclude that, despite the sometimes conflicting experimental data, a general picture is emerging that excessive stimulation of WNT signaling adversely affects cardiovascular pathology. The rapidly increasing collection of drugs interfering at different levels of WNT signaling will allow the evaluation of therapeutic interventions in the pathway in relevant animal models of cardiovascular diseases and eventually in patients in the near future, translating the outcomes of the many preclinical studies into a clinically relevant context.
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Affiliation(s)
- Sébastien Foulquier
- Department of Pharmacology and Toxicology, Cardiovascular Research Institute, Maastricht University, Maastricht, The Netherlands (S.F., K.C.M.H., W.M.B.); Recherche Cardiovasculaire (CARD), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium (E.P.D.); Department of Medicine, Division of Cardiology, David Geffen School of Medicine (G.L., A.D.); and Department of Molecular Cell and Developmental Biology, University of California at Los Angeles, Los Angeles, California (A.D.)
| | - Evangelos P Daskalopoulos
- Department of Pharmacology and Toxicology, Cardiovascular Research Institute, Maastricht University, Maastricht, The Netherlands (S.F., K.C.M.H., W.M.B.); Recherche Cardiovasculaire (CARD), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium (E.P.D.); Department of Medicine, Division of Cardiology, David Geffen School of Medicine (G.L., A.D.); and Department of Molecular Cell and Developmental Biology, University of California at Los Angeles, Los Angeles, California (A.D.)
| | - Gentian Lluri
- Department of Pharmacology and Toxicology, Cardiovascular Research Institute, Maastricht University, Maastricht, The Netherlands (S.F., K.C.M.H., W.M.B.); Recherche Cardiovasculaire (CARD), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium (E.P.D.); Department of Medicine, Division of Cardiology, David Geffen School of Medicine (G.L., A.D.); and Department of Molecular Cell and Developmental Biology, University of California at Los Angeles, Los Angeles, California (A.D.)
| | - Kevin C M Hermans
- Department of Pharmacology and Toxicology, Cardiovascular Research Institute, Maastricht University, Maastricht, The Netherlands (S.F., K.C.M.H., W.M.B.); Recherche Cardiovasculaire (CARD), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium (E.P.D.); Department of Medicine, Division of Cardiology, David Geffen School of Medicine (G.L., A.D.); and Department of Molecular Cell and Developmental Biology, University of California at Los Angeles, Los Angeles, California (A.D.)
| | - Arjun Deb
- Department of Pharmacology and Toxicology, Cardiovascular Research Institute, Maastricht University, Maastricht, The Netherlands (S.F., K.C.M.H., W.M.B.); Recherche Cardiovasculaire (CARD), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium (E.P.D.); Department of Medicine, Division of Cardiology, David Geffen School of Medicine (G.L., A.D.); and Department of Molecular Cell and Developmental Biology, University of California at Los Angeles, Los Angeles, California (A.D.)
| | - W Matthijs Blankesteijn
- Department of Pharmacology and Toxicology, Cardiovascular Research Institute, Maastricht University, Maastricht, The Netherlands (S.F., K.C.M.H., W.M.B.); Recherche Cardiovasculaire (CARD), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium (E.P.D.); Department of Medicine, Division of Cardiology, David Geffen School of Medicine (G.L., A.D.); and Department of Molecular Cell and Developmental Biology, University of California at Los Angeles, Los Angeles, California (A.D.)
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11
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Badana AK, Chintala M, Gavara MM, Naik S, Kumari S, Kappala VR, Iska BR, Malla RR. Lipid rafts disruption induces apoptosis by attenuating expression of LRP6 and survivin in triple negative breast cancer. Biomed Pharmacother 2017; 97:359-368. [PMID: 29091885 DOI: 10.1016/j.biopha.2017.10.045] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 10/08/2017] [Accepted: 10/09/2017] [Indexed: 01/18/2023] Open
Abstract
Triple negative breast cancer is a clinically challenging subtype due to lack of biomarker for rational targeted therapy. Lipid rafts are cholesterol enriched rigid platforms, which colocalize signalling molecules of cancer progression. This study explores the effect of lipid rafts disruption by cholesterol depleting agent, MβCD on induction of apoptosis and expression of WNT receptor LRP6, survivin and common apoptotic markers in TNBC cell lines. The in vitro effect of lipid rafts disruption on viability, single cell reproductive ability, proliferation and migration were evaluated by MTT, clonogenic, BrdU incorporation and wound scratch assays, respectively. The morphological changes were assessed by tryphan blue, Wright and Giemsa staining; nuclear changes by Hoechst staining. The induction of apoptosis was evaluated by AO/EtBr staining, DNA damage and DNA fragmentation assays. Expression of Caveolin-1, LRP6, β-Catenin, Survivin, Bcl2, BAX, Caspase-3, Ki67 and c-myc were analyzed by PCR and Western blotting techniques. The lipid raft disruption resulted in reduction of the proliferation of MDA-MB 231 and MDA-MB 468 cells by 56.3 and 42.0%; survival fraction by 54.7 and 59.4%; migration by 44.3 and 48.4%, respectively. It also induced apoptosis by causing cell shrinkage, membrane blebbing, nuclear condensation, chromatin cleavage, oligonucleotide fragmentation with an apoptotic index of 59.1 and 46.6% in MDA-MB 231 and 468 cells, respectively. Further, it downregulated the expression of caveolin-1, LRP6, β-catenin, survivin, Bcl2, ki67, c-myc and upregulated BAX, caspase-3. The cholesterol supplementation enhanced the clonogenic potential and upregulated the expression of caveolin-1 and LRP6. The results underline a potential effect of lipid rafts disruption on induction of apoptosis in TNBC cells.
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Affiliation(s)
- Anil Kumar Badana
- Cancer Biology Research Laboratory, Department of Biochemistry, GIS, GITAM University, Visakhapatnam, India
| | - Madhuri Chintala
- Department of Obstetrics & Gynecology, Andhra Medical College, Visakhapatnam, India
| | - Murali Mohan Gavara
- Cancer Biology Research Laboratory, Department of Biochemistry, GIS, GITAM University, Visakhapatnam, India
| | - Shailender Naik
- Cancer Biology Research Laboratory, Department of Biochemistry, GIS, GITAM University, Visakhapatnam, India
| | - Seema Kumari
- Cancer Biology Research Laboratory, Department of Biochemistry, GIS, GITAM University, Visakhapatnam, India
| | | | | | - Rama Rao Malla
- Cancer Biology Research Laboratory, Department of Biochemistry, GIS, GITAM University, Visakhapatnam, India; Department of Biochemistry, GIS, GITAM University, Visakhapatnam, India.
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12
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Duvetorp A, Olsen RS, Nyström H, Skarstedt M, Dienus O, Mrowietz U, Söderman J, Seifert O. Expression of low-density lipoprotein-related receptors 5 and 6 (LRP5/6) in psoriasis skin. Exp Dermatol 2017; 26:1033-1038. [PMID: 28418602 DOI: 10.1111/exd.13362] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/04/2017] [Indexed: 12/17/2022]
Abstract
Low-density lipoprotein-related receptors 5 and 6 (LRP5/6) are transmembrane receptors with key functions in canonical Wnt signalling. Wnt ligands are thought to play an important role in innate immunity and psoriasis, and recent studies assigned LRP5/6 anti-inflammatory properties. The objective of this study was to investigate the expression of LRP5 and LRP6 in lesional and non-lesional skin in peripheral blood and in mononuclear cells of patients with chronic plaque type psoriasis compared with control individuals. To investigate the effect of UV-B radiation, LRP5/6 skin gene expression was analysed before and after narrowband UV-B treatment. Our results showed significantly decreased gene expression of LRP5 and LRP6 in lesional skin and in peripheral blood from patients with psoriasis compared with non-lesional skin and healthy control skin. Immunohistochemistry did not reveal differences in protein expression of LRP5/6. Narrowband UV-B treatment induced a significant increase in LRP5 and LRP6 gene expression in lesional skin. Decreased gene expression of LRP5/6 in lesional skin and upregulation after nb UV-B treatment suggest a possible role for LRP5/6 in psoriasis.
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Affiliation(s)
- Albert Duvetorp
- Division of Dermatology and Venereology, Region Jönköping County, Jönköping, Sweden
| | - Renate Slind Olsen
- Faculty of Medicine and Health Sciences, Department of Medicine and Health Sciences, Division of Drug Research, Linköping University, Linköping, Sweden.,Division of Medical Diagnostics, Region Jönköping County, Jönköping, Sweden
| | - Helena Nyström
- Division of Medical Diagnostics, Region Jönköping County, Jönköping, Sweden
| | - Marita Skarstedt
- Division of Medical Diagnostics, Region Jönköping County, Jönköping, Sweden
| | - Olaf Dienus
- Division of Medical Diagnostics, Region Jönköping County, Jönköping, Sweden
| | - Ulrich Mrowietz
- Department of Dermatology, Psoriasis-Center, University Medical Center Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Jan Söderman
- Division of Medical Diagnostics, Region Jönköping County, Jönköping, Sweden
| | - Oliver Seifert
- Division of Dermatology and Venereology, Region Jönköping County, Jönköping, Sweden.,Faculty of Medicine and Health Sciences, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
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13
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14
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Scott Kiss R, Sniderman A. Shunts, channels and lipoprotein endosomal traffic: a new model of cholesterol homeostasis in the hepatocyte. J Biomed Res 2017; 31:95-107. [PMID: 28808191 PMCID: PMC5445212 DOI: 10.7555/jbr.31.20160139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The liver directs cholesterol metabolism in the organism. All the major fluxes of cholesterol within the body involve the liver: dietary cholesterol is directed to the liver; cholesterol from peripheral cells goes to the liver; the liver is a major site of cholesterol synthesis for the organism; cholesterol is secreted from the liver within the bile, within apoB lipoproteins and translocated to nascent HDL. The conventional model of cholesterol homeostasis posits that cholesterol from any source enters a common, rapidly exchangeable pool within the cell, which is in equilibrium with a regulatory pool. Increased influx of cholesterol leads rapidly to decreased synthesis of cholesterol. This model was developed based on in vitro studies in the fibroblast and validated only for LDL particles. The challenges the liver must meet in vivo to achieve cholesterol homeostasis are far more complex. Our model posits that the cholesterol derived from three different lipoproteins endosomes has three different fates: LDL-derived cholesterol is largely recycled within VLDL with most of the cholesterol shunted through the hepatocyte without entering the exchangeable pool of cholesterol; high density lipoprotein-derived CE is transcytosed into bile; and chylomicron remnant-derived cholesterol primarily enters the regulatory pool within the hepatocyte. These endosomal channels represent distinct physiological pathways and hepatic homeostasis represents the net result of the outcomes of these distinct channels. Our model takes into account the distinct physiological challenges the hepatocyte must meet, underlie the pathophysiology of many of the apoB dyslipoproteinemias and account for the sustained effectiveness of therapeutic agents such as statins.
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Affiliation(s)
- Robert Scott Kiss
- Research Institute of the McGill University Health Centre, Montreal, Quebec H4A 3J1, Canada.,Department of Medicine, McGill University, Montreal, Quebec H4A 3J1, Canada
| | - Allan Sniderman
- Research Institute of the McGill University Health Centre, Montreal, Quebec H4A 3J1, Canada.,Department of Medicine, McGill University, Montreal, Quebec H4A 3J1, Canada
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15
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Borrell-Pages M, Vilahur G, Romero JC, Casaní L, Bejar MT, Badimon L. LRP5/canonical Wnt signalling and healing of ischemic myocardium. Basic Res Cardiol 2016; 111:67. [PMID: 27704249 DOI: 10.1007/s00395-016-0585-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 09/20/2016] [Accepted: 09/27/2016] [Indexed: 12/22/2022]
Abstract
LRP5 (low-density lipoprotein receptor-related protein 5) activates canonical Wnt signalling. LRP5 plays multiple roles including regulation of lipoprotein and cholesterol homeostasis as well as innate immunity cell function. However, it is not known whether LRP5 has a role in the myocardium. The aim of this study was to investigate LRP5 and Wnt signalling in myocardial remodelling after acute myocardial infarction (MI). Wnt protein levels were determined in a hypercholesterolemic porcine model of MI, in Lrp5 -/- C57Bl6 mice, in cultured cardiomyocytes and in human explanted hearts with previous MI episodes. 21 days post-MI, there was upregulation of LRP5 in the ischemic myocardium of hypercholesterolemic pigs as well as an upregulated expression of proteins of the Wnt pathway. We demonstrate via overexpression and silencing experiments that LRP5 induces Wnt pathway activation in isolated cardiomyocytes. Hypoxia and lipid-loading induced the expression of Wnt proteins, whereas this effect is blocked in LRP5-silenced cardiomyocytes. To characterize the function of the LRP5-Wnt axis upregulation in the heart, we induced MI in wild-type and Lrp5 -/- mice. Lrp5 -/- mice had significantly larger infarcts than Wt mice, indicating a protective role of LRP5 in injured myocardium. The LRP5 upregulation in post-MI hearts seen in pigs and mice was also evident in human hearts as dyslipidemic patients with previous episodes of ischemia have higher expression of LRP5 and Wnt-signalling genes than non-ischemic dilated hearts. We demonstrate an upregulation of LRP5 and the Wnt signalling pathway that it is a prosurvival healing response of cardiomyocytes upon injury.
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Affiliation(s)
- M Borrell-Pages
- Cardiovascular Research Center, CSIC-ICCC, Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, C/Sant Antoni Maria Claret 167, 08025, Barcelona, Spain
| | - G Vilahur
- Cardiovascular Research Center, CSIC-ICCC, Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, C/Sant Antoni Maria Claret 167, 08025, Barcelona, Spain
| | - J C Romero
- Cardiovascular Research Center, CSIC-ICCC, Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, C/Sant Antoni Maria Claret 167, 08025, Barcelona, Spain
| | - L Casaní
- Cardiovascular Research Center, CSIC-ICCC, Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, C/Sant Antoni Maria Claret 167, 08025, Barcelona, Spain
| | - M T Bejar
- Cardiovascular Research Center, CSIC-ICCC, Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, C/Sant Antoni Maria Claret 167, 08025, Barcelona, Spain
| | - L Badimon
- Cardiovascular Research Center, CSIC-ICCC, Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, C/Sant Antoni Maria Claret 167, 08025, Barcelona, Spain. .,Cardiovascular Research Chair, UAB-Fundación Jesús Serra, Barcelona, Spain.
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16
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Escate R, Padro T, Borrell-Pages M, Suades R, Aledo R, Mata P, Badimon L. Macrophages of genetically characterized familial hypercholesterolaemia patients show up-regulation of LDL-receptor-related proteins. J Cell Mol Med 2016; 21:487-499. [PMID: 27680891 PMCID: PMC5323824 DOI: 10.1111/jcmm.12993] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 08/18/2016] [Indexed: 12/28/2022] Open
Abstract
Familial hypercholesterolaemia (FH) is a major risk for premature coronary heart disease due to severe long‐life exposure to high LDL levels. Accumulation of LDL in the vascular wall triggers atherosclerosis with activation of the innate immunity system. Here, we have investigated (i) gene expression of LDLR and LRPs in peripheral blood cells (PBLs) and in differentiated macrophages of young FH‐patients; and (ii) whether macrophage from FH patients have a differential response when exposed to high levels of atherogenic LDL. PBLs in young heterozygous genetically characterized FH patients have higher expression of LRP5 and LRP6 than age‐matched healthy controls or patients with secondary hypercholesterolaemia. LRP1 levels were similar among groups. In monocyte‐derived macrophages (MACs), LRP5 and LRP1 transcript levels did not differ between FHs and controls in resting conditions, but when exposed to agLDL, FH‐MAC showed a highly significant up‐regulation of LRP5, while LRP1 was unaffected. PBL and MAC cells from FH patients had significantly lower LDLR expression than control cells, independently of the lipid‐lowering therapy. Furthermore, exposure of FH‐MAC to agLDL resulted in a reduced expression of CD163, scavenger receptor with anti‐inflammatory and atheroprotective properties. In summary, our results show for first time that LRPs, active lipid‐internalizing receptors, are up‐regulated in innate immunity cells of young FH patients that have functional LDLR mutations. Additionally, their reduced CD163 expression indicates less atheroprotection. Both mechanisms may play a synergic effect on the onset of premature atherosclerosis in FH patients.
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Affiliation(s)
- Rafael Escate
- Cardiovascular Research Center (CSIC-ICCC), IIB-Sant Pau, Barcelona, Spain
| | - Teresa Padro
- Cardiovascular Research Center (CSIC-ICCC), IIB-Sant Pau, Barcelona, Spain
| | | | - Rosa Suades
- Cardiovascular Research Center (CSIC-ICCC), IIB-Sant Pau, Barcelona, Spain
| | - Rosa Aledo
- Cardiovascular Research Center (CSIC-ICCC), IIB-Sant Pau, Barcelona, Spain
| | | | - Lina Badimon
- Cardiovascular Research Center (CSIC-ICCC), IIB-Sant Pau, Barcelona, Spain.,Cardiovascular Research Chair, UAB, Barcelona, Spain
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17
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LRP5: A novel anti-inflammatory macrophage marker that positively regulates migration and phagocytosis. J Mol Cell Cardiol 2016; 91:61-2. [DOI: 10.1016/j.yjmcc.2015.12.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 12/27/2015] [Indexed: 12/26/2022]
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18
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Borrell-Pages M, Romero J, Crespo J, Juan-Babot O, Badimon L. LRP5 associates with specific subsets of macrophages: Molecular and functional effects. J Mol Cell Cardiol 2016; 90:146-56. [DOI: 10.1016/j.yjmcc.2015.12.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 11/30/2015] [Accepted: 12/03/2015] [Indexed: 10/22/2022]
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