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Wang J, Xu J, Liu T, Yu C, Xu F, Wang G, Li S, Dai X. Biomechanics-mediated endocytosis in atherosclerosis. Front Cardiovasc Med 2024; 11:1337679. [PMID: 38638885 PMCID: PMC11024446 DOI: 10.3389/fcvm.2024.1337679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 03/04/2024] [Indexed: 04/20/2024] Open
Abstract
Biomechanical forces, including vascular shear stress, cyclic stretching, and extracellular matrix stiffness, which influence mechanosensitive channels in the plasma membrane, determine cell function in atherosclerosis. Being highly associated with the formation of atherosclerotic plaques, endocytosis is the key point in molecule and macromolecule trafficking, which plays an important role in lipid transportation. The process of endocytosis relies on the mobility and tension of the plasma membrane, which is sensitive to biomechanical forces. Several studies have advanced the signal transduction between endocytosis and biomechanics to elaborate the developmental role of atherosclerosis. Meanwhile, increased plaque growth also results in changes in the structure, composition and morphology of the coronary artery that contribute to the alteration of arterial biomechanics. These cross-links of biomechanics and endocytosis in atherosclerotic plaques play an important role in cell function, such as cell phenotype switching, foam cell formation, and lipoprotein transportation. We propose that biomechanical force activates the endocytosis of vascular cells and plays an important role in the development of atherosclerosis.
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Affiliation(s)
- Jinxuan Wang
- School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China
- Department of Cardiology, The Third Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Jianxiong Xu
- School of Health Management, Xihua University, Chengdu, China
| | - Tianhu Liu
- Department of Cardiology, The Third Affiliated Hospital of Chengdu Medical College, Chengdu, China
- Cardiology and Vascular Health Research Center, Chengdu Medical College, Chengdu, China
| | - Chaoping Yu
- Department of Cardiology, The Third Affiliated Hospital of Chengdu Medical College, Chengdu, China
- Cardiology and Vascular Health Research Center, Chengdu Medical College, Chengdu, China
| | - Fengcheng Xu
- Department of Cardiology, The Third Affiliated Hospital of Chengdu Medical College, Chengdu, China
- Cardiology and Vascular Health Research Center, Chengdu Medical College, Chengdu, China
| | - Guixue Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, China
| | - Shun Li
- School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China
| | - Xiaozhen Dai
- Department of Cardiology, The Third Affiliated Hospital of Chengdu Medical College, Chengdu, China
- Cardiology and Vascular Health Research Center, Chengdu Medical College, Chengdu, China
- School of Biosciences and Technology, Chengdu Medical College, Chengdu, China
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Geh EN, Swertfeger DK, Sexmith H, Heink A, Tarapore P, Melchior JT, Davidson WS, Shah AS. A novel assay to measure low-density lipoproteins binding to proteoglycans. PLoS One 2024; 19:e0291632. [PMID: 38295021 PMCID: PMC10830033 DOI: 10.1371/journal.pone.0291632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 09/04/2023] [Indexed: 02/02/2024] Open
Abstract
BACKGROUND The binding of low-density lipoprotein (LDL) to proteoglycans (PGs) in the extracellular matrix (ECM) of the arterial intima is a key initial step in the development of atherosclerosis. Although many techniques have been developed to assess this binding, most of the methods are labor-intensive and technically challenging to standardize across research laboratories. Thus, sensitive, and reproducible assay to detect LDL binding to PGs is needed to screen clinical populations for atherosclerosis risk. OBJECTIVES The aim of this study was to develop a quantitative, and reproducible assay to evaluate the affinity of LDL towards PGs and to replicate previously published results on LDL-PG binding. METHODS Immunofluorescence microscopy was performed to visualize the binding of LDL to PGs using mouse vascular smooth muscle (MOVAS) cells. An in-cell ELISA (ICE) was also developed and optimized to quantitatively measure LDL-PG binding using fixed MOVAS cells cultured in a 96-well format. RESULTS We used the ICE assay to show that, despite equal APOB concentrations, LDL isolated from adults with cardiovascular disease bound to PG to a greater extent than LDL isolated from adults without cardiovascular disease (p<0.05). CONCLUSION We have developed an LDL-PG binding assay that is capable of detecting differences in PG binding affinities despite equal APOB concentrations. Future work will focus on candidate apolipoproteins that enhance or diminish this interaction.
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Affiliation(s)
- Esmond N. Geh
- Division of Endocrinology, Cincinnati Children’s Hospital Medical Center & the Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Debi K. Swertfeger
- Division of Endocrinology, Cincinnati Children’s Hospital Medical Center & the Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Hannah Sexmith
- Division of Endocrinology, Cincinnati Children’s Hospital Medical Center & the Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Anna Heink
- Division of Endocrinology, Cincinnati Children’s Hospital Medical Center & the Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Pheruza Tarapore
- Center for Lipid and Arteriosclerosis Science, Department of Pathology and Laboratory Medicine, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - John T. Melchior
- Center for Lipid and Arteriosclerosis Science, Department of Pathology and Laboratory Medicine, University of Cincinnati, Cincinnati, Ohio, United States of America
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington, United States of America
- Department of Neurology, Oregon Health and Science University, Portland, Oregon, United States of America
| | - W. Sean Davidson
- Center for Lipid and Arteriosclerosis Science, Department of Pathology and Laboratory Medicine, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Amy Sanghavi Shah
- Division of Endocrinology, Cincinnati Children’s Hospital Medical Center & the Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
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Sharma S, Warsi MS, Abidi M, Tufail N, Ahmad R, Siddiqui SA, Moinuddin. Crotonaldehyde induced structural alterations in Low-Density Lipoprotein: Immunogenicity of the modified protein in experimental animals and auto-antibodies generation in various cancers. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 304:123332. [PMID: 37725881 DOI: 10.1016/j.saa.2023.123332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 08/16/2023] [Accepted: 08/31/2023] [Indexed: 09/21/2023]
Abstract
Crotonaldehyde (CA), a prominent component of cigarette smoke (CS) is a pervasive environmental pollutant that is a highly toxic, unsaturated aldehyde. Exposure to CA-rich pollutants has been linked to the emergence of many malignancies in humans. To better understand the role of CA in biomolecule modification, this study investigated the detailed structural alterations in low-density lipoprotein (LDL) modified by CA, as well as the immunogenicity of the modified protein in experimental animals and the search for autoantibodies in various cancers patients.In vitro, results indicated alterations in secondary and tertiary structures; examined using UV-visible, fluorescence, far-UV circular dichroism, and Fourier transform infrared spectroscopy techniques. Changes in the oxidation status of LDL were studied by carbonyl content assay and NBT assay. ThT binding assay, scanning, and transmission electron microscopy were used to study aggregate formation. The findings revealed significant structural damage in LDL modified by CA. The modification resulted in the unmasking of hydrophobic clusters, the loss of the protein α-helix, and the formation of β-pleated sheet structure. The amyloid aggregate formation was confirmed through ThT microscopy and electron spectroscopy. Rabbits immunized with crotonaldehyde; lead to structural changes in the LDL; that acted as extra antigenic determinants, eliciting strong antibody response. Immunoglobulin response is highly specific for modified LDL as demonstrated by the ELISA. The presence of antibodies against CA-modified LDL was confirmed by the immunoglobulin content of blood sera from human subjects with lung cancer, and competitive ELISA demonstrated the specificity of these antibodies. This study offers insights into the CA-mediated LDL modification and immunogenicity in lung cancer that will have diagnostic importance.
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Affiliation(s)
- Surabhi Sharma
- Department of Biochemistry, Jawaharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Mohd Sharib Warsi
- Department of Biochemistry, Jawaharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Minhal Abidi
- Department of Biochemistry, Jawaharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Neda Tufail
- Department of Biochemistry, Jawaharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Rizwan Ahmad
- Department of Biochemistry, Jawaharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Shahid Ali Siddiqui
- Department of Radiotherapy, Jawaharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Moinuddin
- Department of Biochemistry, Jawaharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
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Wang A, Yue K, Zhong W, Zhang G, Wang L, Wang H, Zhang H, Zhang X. Ligand-receptor interaction in the specific targeting of biomimetic peptide nanoparticles to lysophosphatidylcholine. Int J Biol Macromol 2023; 227:193-202. [PMID: 36549027 DOI: 10.1016/j.ijbiomac.2022.12.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/14/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022]
Abstract
As nanotechnology is applied clinical medicine, nanoparticle-based therapy is emerging as a novel approach for the treatment of atherosclerosis. Ligand-receptor interaction affects the effectiveness of nanoparticle targeting therapy. In this study, the biomimetic peptide (BP-KFFVLK-WYKDGD) ligand specifically targeting the lysophosphatidylcholine (LPC) receptor in atherosclerotic plaques was constructed. The corresponding ligand-receptor interaction under different pH values was investigated by molecular dynamics simulation and experimental measurements. Results show that the interaction force between the peptide and LPC is greater than that of the peptide and human umbilical vein endothelial cell, clearly demonstrating the specific targeting of the peptide ligand to the LPC receptor. The ligand-receptor binding of peptide and LPC dominantly depends on Coulomb and van der Waals interactions. The YKDG amino acids of the peptide are the main fragment that binds to LPC. Compared with neutral environment at pH 7.4, the interaction forces between the peptide and oxidized low-density lipoprotein (oxLDL) decreased by 18.22 % and 45.87 % under acidic environments at pH 6.5 and 5.5, respectively, because of the change in oxLDL secondary structure and the release of LPC from oxLDL. Nevertheless, the peptide still has a strong binding capacity with oxLDL for the treatment of atherosclerosis.
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Affiliation(s)
- Anqi Wang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Kai Yue
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Shunde Graduate School of University of Science and Technology Beijing, Shunde, Guangdong Province 528399, China.
| | - Weishen Zhong
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Genpei Zhang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Shunde Graduate School of University of Science and Technology Beijing, Shunde, Guangdong Province 528399, China
| | - Lei Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing 100190, China
| | - Hao Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing 100190, China
| | - Hua Zhang
- Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Xinxin Zhang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Shunde Graduate School of University of Science and Technology Beijing, Shunde, Guangdong Province 528399, China
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Piontek MC, Roos WH. Lipoprotein particles exhibit distinct mechanical properties. JOURNAL OF EXTRACELLULAR BIOLOGY 2022; 1:e68. [PMID: 38938600 PMCID: PMC11080718 DOI: 10.1002/jex2.68] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/12/2022] [Accepted: 11/23/2022] [Indexed: 06/29/2024]
Abstract
Lipoproteins (LPs) are micelle-like structures with a similar size to extracellular vesicles (EVs) and are therefore often co-isolated, as intensively discussed within the EV community. LPs from human blood plasma are of particular interest as they are responsible for the deposition of cholesterol ester and other fats in the artery, causing lesions, and eventually atherosclerosis. Plasma lipoproteins can be divided according to their size, density and composition into chylomicrons (CM), very-low-density lipoproteins (VLDL), low-density lipoproteins (LDL) and high-density lipoproteins (HDL). Here, we use atomic force microscopy for mechanical characterization of LPs. We show that the nanoindentation approach used for EV analysis can also be used to characterize LPs, revealing specific differences between some of the particles. Comparing LPs with each other, LDL exhibit a higher bending modulus as compared to CM and VLDL, which is likely related to differences in cholesterol and apolipoproteins. Furthermore, CM typically collapse on the surface after indentation and HDL exhibit a very low height after surface adhesion both being indications for the presence of LPs in an EV sample. Our analysis provides new systematic insights into the mechanical characteristics of LPs.
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Affiliation(s)
- Melissa C. Piontek
- Moleculaire BiofysicaZernike Instituut, Rijksuniversiteit GroningenGroningenThe Netherlands
| | - Wouter H. Roos
- Moleculaire BiofysicaZernike Instituut, Rijksuniversiteit GroningenGroningenThe Netherlands
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Rong T, Wei B, Ao M, Zhao H, Li Y, Zhang Y, Qin Y, Zhou J, Zhou F, Chen Y. Enhanced Anti-Atherosclerotic Efficacy of pH-Responsively Releasable Ganglioside GM3 Delivered by Reconstituted High-Density Lipoprotein. Int J Mol Sci 2021; 22:ijms222413624. [PMID: 34948420 PMCID: PMC8704253 DOI: 10.3390/ijms222413624] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/12/2021] [Accepted: 12/13/2021] [Indexed: 11/16/2022] Open
Abstract
Recently, the atheroprotective role of endogenous GM3 and an atherogenesis-inhibiting effect of exogenous GM3 suggested a possibility of exogenous GM3 being recruited as an anti-atherosclerotic drug. This study seeks to endow exogenous GM3 with atherosclerotic targetability via reconstituted high-density lipoprotein (rHDL), an atherosclerotic targeting drug nanocarrier. Unloaded rHDL, rHDL loaded with exogenous GM3 at a low concentration (GM3L-rHDL), and rHDL carrying GM3 at a relatively high concentration (GM3H-rHDL) were prepared and characterized. The inhibitory effect of GM3-rHDL on lipid deposition in macrophages was confirmed, and GM3-rHDL did not affect the survival of red blood cells. In vivo experiments using ApoE-/- mice fed a high fat diet further confirmed the anti-atherosclerotic efficacy of exogenous GM3 and demonstrated that GM3 packed in HDL nanoparticles (GM3-rHDL) has an enhanced anti-atherosclerotic efficacy and a reduced effective dose of GM3. Then, the macrophage- and atherosclerotic plaque-targeting abilities of GM3-rHD, most likely via the interaction of ApoA-I on GM3-rHDL with its receptors (e.g., SR-B1) on cells, were certified via a microsphere-based method and an aortic fragment-based method, respectively. Moreover, we found that solution acidification enhanced GM3 release from GM3-rHDL nanoparticles, implying the pH-responsive GM3 release when GM3-rHDL enters the acidic atherosclerotic plaques from the neutral blood. The rHDL-mediated atherosclerotic targetability and pH-responsive GM3 release of GM3-rHDL enhanced the anti-atherosclerotic efficacy of exogenous GM3. The development of the GM3-rHDL nanoparticle may help with the application of exogenous GM3 as a clinical drug. Moreover, the data imply that the GM3-rHDL nanoparticle has the potential of being recruited as a drug nanocarrier with atherosclerotic targetability and enhanced anti-atherosclerotic efficacy.
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Affiliation(s)
- Tong Rong
- College of Life Sciences, Nanchang University, 999 Xuefu Ave, Honggutan District, Nanchang 330031, China; (T.R.); (B.W.); (Y.Q.); (F.Z.)
- Jiangxi Key Laboratory for Microscale Interdisciplinary Study, Institute for Advanced Study, Nanchang University, Nanchang 330031, China; (H.Z.); (Y.L.); (Y.Z.); (J.Z.)
| | - Bo Wei
- College of Life Sciences, Nanchang University, 999 Xuefu Ave, Honggutan District, Nanchang 330031, China; (T.R.); (B.W.); (Y.Q.); (F.Z.)
| | - Meiying Ao
- School of Basic Medical Sciences, Jiangxi University of Chinese Medicine, Nanchang 330025, China;
| | - Haonan Zhao
- Jiangxi Key Laboratory for Microscale Interdisciplinary Study, Institute for Advanced Study, Nanchang University, Nanchang 330031, China; (H.Z.); (Y.L.); (Y.Z.); (J.Z.)
| | - Yuanfang Li
- Jiangxi Key Laboratory for Microscale Interdisciplinary Study, Institute for Advanced Study, Nanchang University, Nanchang 330031, China; (H.Z.); (Y.L.); (Y.Z.); (J.Z.)
| | - Yang Zhang
- Jiangxi Key Laboratory for Microscale Interdisciplinary Study, Institute for Advanced Study, Nanchang University, Nanchang 330031, China; (H.Z.); (Y.L.); (Y.Z.); (J.Z.)
| | - Ying Qin
- College of Life Sciences, Nanchang University, 999 Xuefu Ave, Honggutan District, Nanchang 330031, China; (T.R.); (B.W.); (Y.Q.); (F.Z.)
- Jiangxi Key Laboratory for Microscale Interdisciplinary Study, Institute for Advanced Study, Nanchang University, Nanchang 330031, China; (H.Z.); (Y.L.); (Y.Z.); (J.Z.)
| | - Jinhua Zhou
- Jiangxi Key Laboratory for Microscale Interdisciplinary Study, Institute for Advanced Study, Nanchang University, Nanchang 330031, China; (H.Z.); (Y.L.); (Y.Z.); (J.Z.)
| | - Fenfen Zhou
- College of Life Sciences, Nanchang University, 999 Xuefu Ave, Honggutan District, Nanchang 330031, China; (T.R.); (B.W.); (Y.Q.); (F.Z.)
- Jiangxi Key Laboratory for Microscale Interdisciplinary Study, Institute for Advanced Study, Nanchang University, Nanchang 330031, China; (H.Z.); (Y.L.); (Y.Z.); (J.Z.)
| | - Yong Chen
- College of Life Sciences, Nanchang University, 999 Xuefu Ave, Honggutan District, Nanchang 330031, China; (T.R.); (B.W.); (Y.Q.); (F.Z.)
- Jiangxi Key Laboratory for Microscale Interdisciplinary Study, Institute for Advanced Study, Nanchang University, Nanchang 330031, China; (H.Z.); (Y.L.); (Y.Z.); (J.Z.)
- Correspondence: ; Tel./Fax: +86-791-8396-9963
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