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Saddic L, Escopete S, Zilberberg L, Kalsow S, Gupta D, Eghbali M, Parker S. 17 β-Estradiol Impedes Aortic Root Dilation and Rupture in Male Marfan Mice. Int J Mol Sci 2023; 24:13571. [PMID: 37686377 PMCID: PMC10487461 DOI: 10.3390/ijms241713571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/20/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023] Open
Abstract
Marfan syndrome causes a hereditary form of thoracic aortic aneurysms with worse outcomes in male compared to female patients. In this study, we examine the effects of 17 β-estradiol on aortic dilation and rupture in a Marfan mouse model. Marfan male mice were administered 17 β-estradiol, and the growth in the aortic root, along with the risk of aortic rupture, was measured. Transcriptomic profiling was used to identify enriched pathways from 17 β-estradiol treatments. Aortic smooth muscle cells were then treated with cytokines to validate functional mechanisms. We show that 17 β-estradiol decreased the size and rate of aortic root dilation and improved survival from rupture. The Marfan transcriptome was enriched in inflammatory genes, and the addition of 17 β-estradiol modulated a set of genes that function through TNFα mediated NF-κB signaling. In addition, 17 β-estradiol suppressed the induction of these TNFα induced genes in aortic smooth muscle cells in vitro in an NF-κB dependent manner, and 17 β-estradiol decreased the formation of adventitial inflammatory foci in aortic roots in vivo. In conclusion, 17 β-estradiol protects against the dilation and rupture of aortic roots in Marfan male mice through the inhibition of TNFα-NF-κB signaling.
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Affiliation(s)
- Louis Saddic
- Department of Anesthesiology and Perioperative Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA (M.E.)
| | - Sean Escopete
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA (L.Z.); (S.K.); (D.G.)
| | - Lior Zilberberg
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA (L.Z.); (S.K.); (D.G.)
| | - Shannon Kalsow
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA (L.Z.); (S.K.); (D.G.)
| | - Divya Gupta
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA (L.Z.); (S.K.); (D.G.)
| | - Mansoureh Eghbali
- Department of Anesthesiology and Perioperative Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA (M.E.)
| | - Sarah Parker
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA (L.Z.); (S.K.); (D.G.)
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Zakharova I, Saaya S, Shevchenko A, Stupnikova A, Zhiven' M, Laktionov P, Stepanova A, Romashchenko A, Yanshole L, Chernonosov A, Volkov A, Kizilova E, Zavjalov E, Chernyavsky A, Romanov A, Karpenko A, Zakian S. Mitomycin-Treated Endothelial and Smooth Muscle Cells Suitable for Safe Tissue Engineering Approaches. Front Bioeng Biotechnol 2022; 10:772981. [PMID: 35360387 PMCID: PMC8963790 DOI: 10.3389/fbioe.2022.772981] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 01/04/2022] [Indexed: 11/13/2022] Open
Abstract
In our previous study, we showed that discarded cardiac tissue from the right atrial appendage and right ventricular myocardium is an available source of functional endothelial and smooth muscle cells for regenerative medicine and tissue engineering. In the study, we aimed to find out what benefits are given by vascular cells from cardiac explants used for seeding on vascular patches engrafted to repair vascular defects in vivo. Additionally, to make the application of these cells safer in regenerative medicine we tested an in vitro approach that arrested mitotic division to avoid the potential tumorigenic effect of dividing cells. A tissue-engineered construction in the form of a patch based on a polycaprolactone-gelatin scaffold and seeded with endothelial and smooth muscle cells was implanted into the abdominal aorta of immunodeficient SCID mice. Aortic patency was assessed using ultrasound, MRI, immunohistochemical and histological staining. Endothelial and smooth muscle cells were treated with mitomycin C at a therapeutic concentration of 10 μg/ml for 2 h with subsequent analysis of cell proliferation and function. The absence of the tumorigenic effect of mitomycin C-treated cells, as well as their angiogenic potential, was examined by injecting them into immunodeficient mice. Cell-containing patches engrafted in the abdominal aorta of immunodeficient mice form the vessel wall loaded with the appropriate cells and extracellular matrix, and do not interfere with normal patency. Endothelial and smooth muscle cells treated with mitomycin C show no tumorigenic effect in the SCID immunodeficient mouse model. During in vitro experiments, we have shown that treatment with mitomycin C does not lead to a decrease in cell viability. Despite the absence of proliferation, mitomycin C-treated vascular cells retain specific cell markers, produce specific extracellular matrix, and demonstrate the ability to stimulate angiogenesis in vivo. We pioneered an approach to arresting cell division with mitomycin C in endothelial and smooth muscle cells from cardiac explant, which prevents the risk of malignancy from dividing cells in vascular surgery. We believe that this approach to the fabrication of tissue-engineered constructs based on mitotically inactivated cells from waste postoperative material may be valuable to bring closer the development of safe cell products for regenerative medicine.
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Affiliation(s)
- Irina Zakharova
- The Federal Research Center Institute of Cytology and Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
- E.N. Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation, Novosibirsk, Russia
- Institute of Chemical Biology and Fundamental Medicine, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
- *Correspondence: Irina Zakharova,
| | - Shoraan Saaya
- E.N. Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation, Novosibirsk, Russia
| | - Alexander Shevchenko
- The Federal Research Center Institute of Cytology and Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
- E.N. Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation, Novosibirsk, Russia
- Institute of Chemical Biology and Fundamental Medicine, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Alena Stupnikova
- The Federal Research Center Institute of Cytology and Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
- Deparment of Natural Science, Novosibirsk State University, Novosibirsk, Russia
| | - Maria Zhiven'
- The Federal Research Center Institute of Cytology and Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Pavel Laktionov
- E.N. Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation, Novosibirsk, Russia
- Institute of Chemical Biology and Fundamental Medicine, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Alena Stepanova
- E.N. Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation, Novosibirsk, Russia
- Institute of Chemical Biology and Fundamental Medicine, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Alexander Romashchenko
- The Federal Research Center Institute of Cytology and Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Lyudmila Yanshole
- International Tomography Center,The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Alexander Chernonosov
- Institute of Chemical Biology and Fundamental Medicine, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Alexander Volkov
- E.N. Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation, Novosibirsk, Russia
| | - Elena Kizilova
- The Federal Research Center Institute of Cytology and Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
- Deparment of Natural Science, Novosibirsk State University, Novosibirsk, Russia
| | - Evgenii Zavjalov
- The Federal Research Center Institute of Cytology and Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Alexander Chernyavsky
- E.N. Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation, Novosibirsk, Russia
| | - Alexander Romanov
- E.N. Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation, Novosibirsk, Russia
| | - Andrey Karpenko
- E.N. Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation, Novosibirsk, Russia
| | - Suren Zakian
- The Federal Research Center Institute of Cytology and Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
- E.N. Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation, Novosibirsk, Russia
- Institute of Chemical Biology and Fundamental Medicine, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
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Wang T, Zhou Z, Luo E, Zhong J, Zhao D, Dong H, Yao B. Comprehensive RNA sequencing in primary murine keratinocytes and fibroblasts identifies novel biomarkers and provides potential therapeutic targets for skin-related diseases. Cell Mol Biol Lett 2021; 26:42. [PMID: 34602061 PMCID: PMC8489068 DOI: 10.1186/s11658-021-00285-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 09/24/2021] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Keratinocytes and fibroblasts represent the major cell types in the epidermis and dermis of the skin and play a significant role in maintenance of skin homeostasis. However, the biological characteristics of keratinocytes and fibroblasts remain to be elucidated. The purpose of this study was to compare the gene expression pattern between keratinocytes and fibroblasts and to explore novel biomarker genes so as to provide potential therapeutic targets for skin-related diseases such as burns, wounds, and aging. METHODS Skin keratinocytes and fibroblasts were isolated from newborn mice. To fully understand the heterogeneity of gene expression between keratinocytes and fibroblasts, differentially expressed genes (DEGs) between the two cell types were detected by RNA-seq technology. Quantitative real-time polymerase chain reaction (qRT-PCR) was used to detect the known genes of keratinocytes and fibroblasts and verify the RNA-seq results. RESULTS Transcriptomic data showed a total of 4309 DEGs (fold-change > 1.5 and q-value < 0.05). Among them, 2197 genes were highly expressed in fibroblasts and included 10 genes encoding collagen, 16 genes encoding transcription factors, and 14 genes encoding growth factors. Simultaneously, 2112 genes were highly expressed in keratinocytes and included 7 genes encoding collagen, 14 genes encoding transcription factors, and 8 genes encoding growth factors. Furthermore, we summarized 279 genes specifically expressed in keratinocytes and 33 genes specifically expressed in fibroblasts, which may represent distinct molecular signatures of each cell type. Additionally, we observed some novel specific biomarkers for fibroblasts such as Plac8 (placenta-specific 8), Agtr2 (angiotensin II receptor, type 2), Serping1 (serpin peptidase inhibitor, clade G, member 1), Ly6c1 (lymphocyte antigen 6 complex, locus C1), Dpt (dermatopontin), and some novel specific biomarkers for keratinocytes such as Ly6a (lymphocyte antigen 6 complex, locus A) and Lce3c (late cornified envelope 3C), Ccer2 (coiled-coil glutamate-rich protein 2), Col18a1 (collagen, type XVIII, alpha 1) and Col17a1 (collagen type XVII, alpha 1). In summary, these data provided novel identifying biomarkers for two cell types, which can provide a resource of DEGs for further investigations.
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Affiliation(s)
- Tiancheng Wang
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Zhenwei Zhou
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Enjing Luo
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Jinghong Zhong
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Daqing Zhao
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Haisi Dong
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, 130117, China.
| | - Baojin Yao
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, 130117, China.
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Remes A, Basha DI, Puehler T, Borowski C, Hille S, Kummer L, Wagner AH, Hecker M, Soethoff J, Lutter G, Frank D, Arif R, Frey N, Zaradzki M, Müller OJ. Alginate hydrogel polymers enable efficient delivery of a vascular-targeted AAV vector into aortic tissue. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2021; 21:83-93. [PMID: 33768132 PMCID: PMC7973147 DOI: 10.1016/j.omtm.2021.02.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 02/19/2021] [Indexed: 12/01/2022]
Abstract
Gene therapeutic approaches to aortic diseases require efficient vectors and delivery systems for transduction of endothelial cells (ECs) and smooth muscle cells (SMCs). Here, we developed a novel strategy to efficiently deliver a previously described vascular-specific adeno-associated viral (AAV) vector to the abdominal aorta by application of alginate hydrogels. To efficiently transduce ECs and SMCs, we used AAV9 vectors with a modified capsid (AAV9SLR) encoding enhanced green fluorescent protein (EGFP), as wild-type AAV vectors do not transduce ECs and SMCs well. AAV9SLR vectors were embedded into a solution containing sodium alginate and polymerized into hydrogels. Gels were surgically implanted around the adventitia of the infrarenal abdominal aorta of adult mice. Three weeks after surgery, an almost complete transduction of both the endothelium and tunica media adjacent to the gel was demonstrated in tissue sections. Hydrogel-mediated delivery resulted in induction of neutralizing antibodies but did not cause inflammatory responses in serum or the aortic wall. To further determine the translational potential, aortic tissue from patients was embedded ex vivo into AAV9SLR-containing hydrogel, and efficient transduction could be confirmed. These findings demonstrate that alginate hydrogel harboring a vascular-targeting AAV9SLR vector allows efficient local transduction of the aortic wall.
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Affiliation(s)
- Anca Remes
- Department of Internal Medicine III, University of Kiel, Kiel, Germany
- German Centre for Cardiovascular Research, Partner Site Hamburg/Kiel/Lübeck, Germany
| | - Dima Ibrahim Basha
- Department of Internal Medicine III, University of Kiel, Kiel, Germany
- German Centre for Cardiovascular Research, Partner Site Hamburg/Kiel/Lübeck, Germany
| | - Thomas Puehler
- German Centre for Cardiovascular Research, Partner Site Hamburg/Kiel/Lübeck, Germany
- Department of Cardiac and Vascular Surgery, University of Kiel, Kiel, Germany
| | - Christopher Borowski
- Department of Internal Medicine III, University of Kiel, Kiel, Germany
- German Centre for Cardiovascular Research, Partner Site Hamburg/Kiel/Lübeck, Germany
| | - Susanne Hille
- Department of Internal Medicine III, University of Kiel, Kiel, Germany
- German Centre for Cardiovascular Research, Partner Site Hamburg/Kiel/Lübeck, Germany
| | - Laura Kummer
- Department of Anesthesiology, University Hospital Heidelberg, Heidelberg, Germany
| | - Andreas H. Wagner
- Department of Cardiovascular Physiology, Heidelberg University, Heidelberg, Germany
| | - Markus Hecker
- Department of Cardiovascular Physiology, Heidelberg University, Heidelberg, Germany
| | - Jasmin Soethoff
- Department of Cardiac Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Georg Lutter
- German Centre for Cardiovascular Research, Partner Site Hamburg/Kiel/Lübeck, Germany
- Department of Cardiac and Vascular Surgery, University of Kiel, Kiel, Germany
| | - Derk Frank
- Department of Internal Medicine III, University of Kiel, Kiel, Germany
- German Centre for Cardiovascular Research, Partner Site Hamburg/Kiel/Lübeck, Germany
| | - Rawa Arif
- Department of Cardiac Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Norbert Frey
- Department of Internal Medicine III, University of Kiel, Kiel, Germany
- German Centre for Cardiovascular Research, Partner Site Hamburg/Kiel/Lübeck, Germany
- Internal Medicine III, University Hospital Heidelberg, Heidelberg, Germany
| | - Marcin Zaradzki
- Department of Cardiac Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Oliver J. Müller
- Department of Internal Medicine III, University of Kiel, Kiel, Germany
- German Centre for Cardiovascular Research, Partner Site Hamburg/Kiel/Lübeck, Germany
- Corresponding author: Oliver J. Müller, Department of Internal Medicine III, University of Kiel, Arnold-Heller-Str. 3, 24105 Kiel, Germany.
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5
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Remes A, Arif R, Franz M, Jungmann A, Zaradzki M, Puehler T, Md MBH, Frey N, Karck M, Kallenbach K, Hecker M, Müller OJ, Wagner AH. AAV-mediated AP-1 decoy oligonucleotide expression inhibits aortic elastolysis in a mouse model of marfan syndrome. Cardiovasc Res 2021; 117:2459-2473. [PMID: 33471064 DOI: 10.1093/cvr/cvab012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 03/02/2019] [Accepted: 01/12/2021] [Indexed: 01/05/2023] Open
Abstract
AIMS Marfan syndrome is one of the most common inherited disorders of connective tissue caused by fibrillin-1 mutations, characterized by enhanced transcription factor AP-1 DNA binding activity and subsequently abnormally increased expression and activity of matrix-metalloproteinases (MMPs). We aimed to establish a novel adeno-associated virus (AAV)-based strategy for long-term expression of an AP-1 neutralising RNA hairpin (hp) decoy oligonucleotide (dON) in the aorta to prevent aortic elastolysis in a murine model of Marfan syndrome. METHODS AND RESULTS Using fibrillin-1 hypomorphic mice (mgR/mgR), aortic grafts from young (9 weeks old) donor mgR/mgR mice were transduced ex vivo with AAV vectors and implanted as infrarenal aortic interposition grafts in mgR/mgR mice. Grafts were explanted after 30 days. For in vitro studies isolated primary aortic smooth muscle cells from mgR/mgR mice were used. Elastica-van-Giesson staining visualized elastolysis, ROS production was assessed using DHE staining. RNA F.I.S.H. verified AP-1 hp dON generation in the ex vivo transduced aortic tissue. MMP expression and activity were assessed by western blotting and immunoprecipitation combined with zymography.Transduction resulted in stable therapeutic dON expression in endothelial and smooth muscle cells. MMP expression and activity, ROS formation as well as expression of monocyte chemoattractant protein-1 were significantly reduced. Monocyte graft infiltration declined and the integrity of the elastin architecture was maintained. RNAseq analyzis confirmed the beneficial effect of AP-1 neutralisation on the pro-inflammatory environment in smooth muscle cells. CONCLUSIONS This novel approach protects from deterioration of aortic stability by sustained delivery of nucleic acids-based therapeutics and further elucidated how to interfere with the mechanism of elastolysis. TRANSLATIONAL PERSPECTIVE This study provides a novel single treatment option to achieve long-term expression of a transcription factor AP-1 neutralising decoy oligonucleotide in the aorta of mgR/mgR mice with the potential to prevent life-threatening elastolysis and aortic complications.
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Affiliation(s)
- Anca Remes
- Department of Internal Medicine III, University of Kiel, and University Hospital Schleswig-Holstein, Kiel, and German Centre for Cardiovascular Research, Partner Site, Hamburg/Kiel/Lübeck, Germany.,Institute of Physiology and Pathophysiology, Heidelberg University, Germany
| | - Rawa Arif
- Department of Cardiac Surgery, University Hospital Heidelberg, Germany
| | - Maximilian Franz
- Department of Cardiac Surgery, University Hospital Heidelberg, Germany
| | | | - Marcin Zaradzki
- Department of Cardiac Surgery, University Hospital Heidelberg, Germany
| | - Thomas Puehler
- Department of Cardiac and Vascular Surgery, University of Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
| | | | - Norbert Frey
- Department of Internal Medicine III, University of Kiel, and University Hospital Schleswig-Holstein, Kiel, and German Centre for Cardiovascular Research, Partner Site, Hamburg/Kiel/Lübeck, Germany.,Internal Medicine III, University Hospital Heidelberg, Germany
| | - Matthias Karck
- Department of Cardiac Surgery, University Hospital Heidelberg, Germany
| | | | - Markus Hecker
- Institute of Physiology and Pathophysiology, Heidelberg University, Germany
| | - Oliver J Müller
- Department of Internal Medicine III, University of Kiel, and University Hospital Schleswig-Holstein, Kiel, and German Centre for Cardiovascular Research, Partner Site, Hamburg/Kiel/Lübeck, Germany
| | - Andreas H Wagner
- Institute of Physiology and Pathophysiology, Heidelberg University, Germany
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Bobyleva LG, Shumeyko SA, Yakupova EI, Surin AK, Galzitskaya OV, Kihara H, Timchenko AA, Timchenko MA, Penkov NV, Nikulin AD, Suvorina MY, Molochkov NV, Lobanov MY, Fadeev RS, Vikhlyantsev IM, Bobylev AG. Myosin Binding Protein-C Forms Amyloid-Like Aggregates In Vitro. Int J Mol Sci 2021; 22:ijms22020731. [PMID: 33450960 PMCID: PMC7828380 DOI: 10.3390/ijms22020731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/06/2021] [Accepted: 01/10/2021] [Indexed: 11/17/2022] Open
Abstract
This work investigated in vitro aggregation and amyloid properties of skeletal myosin binding protein-C (sMyBP-C) interacting in vivo with proteins of thick and thin filaments in the sarcomeric A-disc. Dynamic light scattering (DLS) and transmission electron microscopy (TEM) found a rapid (5–10 min) formation of large (>2 μm) aggregates. sMyBP-C oligomers formed both at the initial 5–10 min and after 16 h of aggregation. Small angle X-ray scattering (SAXS) and DLS revealed sMyBP-C oligomers to consist of 7–10 monomers. TEM and atomic force microscopy (AFM) showed sMyBP-C to form amorphous aggregates (and, to a lesser degree, fibrillar structures) exhibiting no toxicity on cell culture. X-ray diffraction of sMyBP-C aggregates registered reflections attributed to a cross-β quaternary structure. Circular dichroism (CD) showed the formation of the amyloid-like structure to occur without changes in the sMyBP-C secondary structure. The obtained results indicating a high in vitro aggregability of sMyBP-C are, apparently, a consequence of structural features of the domain organization of proteins of this family. Formation of pathological amyloid or amyloid-like sMyBP-C aggregates in vivo is little probable due to amino-acid sequence low identity (<26%), alternating ordered/disordered regions in the protein molecule, and S–S bonds providing for general stability.
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Affiliation(s)
- Liya G. Bobyleva
- Laboratory of the Structure and Functions of Muscle Proteins, Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (L.G.B.); (S.A.S.); (E.I.Y.); (O.V.G.)
| | - Sergey A. Shumeyko
- Laboratory of the Structure and Functions of Muscle Proteins, Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (L.G.B.); (S.A.S.); (E.I.Y.); (O.V.G.)
| | - Elmira I. Yakupova
- Laboratory of the Structure and Functions of Muscle Proteins, Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (L.G.B.); (S.A.S.); (E.I.Y.); (O.V.G.)
| | - Alexey K. Surin
- Laboratory of Bioinformatics and Proteomics, Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia; (A.K.S.); (M.Y.S.); (M.Y.L.)
- Biological Testing Laboratory, Branch of the Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 142290 Pushchino, Russia
- Laboratory of the Biochemistry of Pathogenic Microorganisms, State Research Centre for Applied Microbiology and Biotechnology, Obolensk, 142279 Serpukhov District, Russia
| | - Oxana V. Galzitskaya
- Laboratory of the Structure and Functions of Muscle Proteins, Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (L.G.B.); (S.A.S.); (E.I.Y.); (O.V.G.)
- Laboratory of Bioinformatics and Proteomics, Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia; (A.K.S.); (M.Y.S.); (M.Y.L.)
| | - Hiroshi Kihara
- Department of Early Childhood Education, Himeji-Hinomoto College, 890 Koro, Kodera-cho, Himeji 679-2151, Japan;
| | - Alexander A. Timchenko
- Group of Experimental Research and Engineering of Oligomeric Structures, Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia;
| | - Maria A. Timchenko
- Laboratory of Applied Enzymology, FRC PSCBR, Russian Academy of Sciences, 142290 Pushchino, Russia;
| | - Nikita V. Penkov
- Laboratory of the Methods of Optical Spectral Analysis, Institute of Cell Biophysics, Russian Academy of Sciences, FRC PSCBR RAS, 142290 Pushchino, Russia;
| | - Alexey D. Nikulin
- Laboratory for Structural Studies of the Translational Apparatus, Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia;
| | - Mariya Yu. Suvorina
- Laboratory of Bioinformatics and Proteomics, Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia; (A.K.S.); (M.Y.S.); (M.Y.L.)
| | - Nikolay V. Molochkov
- Laboratory of NMR Investigations of Biosystems, Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia;
| | - Mikhail Yu. Lobanov
- Laboratory of Bioinformatics and Proteomics, Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia; (A.K.S.); (M.Y.S.); (M.Y.L.)
| | - Roman S. Fadeev
- Laboratory of Pharmacological Regulation of Cell Resistance, Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia;
| | - Ivan M. Vikhlyantsev
- Laboratory of the Structure and Functions of Muscle Proteins, Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (L.G.B.); (S.A.S.); (E.I.Y.); (O.V.G.)
- Correspondence: (I.M.V.); (A.G.B.)
| | - Alexander G. Bobylev
- Laboratory of the Structure and Functions of Muscle Proteins, Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (L.G.B.); (S.A.S.); (E.I.Y.); (O.V.G.)
- Correspondence: (I.M.V.); (A.G.B.)
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Kasprzyk-Pawelec A, Wojciechowska A, Kuc M, Zielinski J, Parulski A, Kusmierczyk M, Lutynska A, Kozar-Kaminska K. microRNA expression profile in Smooth Muscle Cells isolated from thoracic aortic aneurysm samples. Adv Med Sci 2019; 64:331-337. [PMID: 31022558 DOI: 10.1016/j.advms.2019.04.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 01/31/2019] [Accepted: 04/10/2019] [Indexed: 12/29/2022]
Abstract
PURPOSE Thoracic aortic aneurysm (TAA) is a cardiovascular disease characterized by increased aortic diameter, treated with surgery and endovascular therapy in order to avoid aortic dissection or rupture. The mechanism of TAA formation has not been thoroughly studied and many factors have been proposed to drive its progression; however strong focus is attributed to modification of smooth muscle cells (SMCs). Latest research indicates, that microRNAs (miRNAs) may play a significant role in TAA development - these are multifunctional molecules consisting of 19-24 nucleotides involved in regulation of the gene expression level related to many biological processes, i.e. cardiovascular disease pathophysiology, immunity or inflammation. MATERIALS AND METHODS Primary SMCs were isolated from aortic scraps of TAA patients and age- and sex-matched healthy controls. Purity of isolated SMCs was determined by flow cytometry using specific markers: α-SMA, CALP, MHC and VIM. Real-time polymerase chain reaction (RT-PCR) was conducted for miRNA analysis. RESULTS We established an isolation protocol and investigated the miRNA expression level in SMCs isolated from aneurysmal and non-aneurysmal aortic samples. We identified that let-7 g (0.71-fold, p = 0.01), miR-130a (0.40-fold, p = 0.04), and miR-221 (0.49-fold, p = 0.05) significantly differed between TAA patients and healthy controls. CONCLUSIONS Further studies are required to improve our understanding of the pathophysiology underlying TAA, which may aid the development of novel, targeted therapies. The pivotal role of miRNAs in the cardiovascular system provides a new perspective on the pathophysiology of thoracic aortic aneurysms.
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Affiliation(s)
- Anna Kasprzyk-Pawelec
- Department of Medical Biology, Immunology Laboratory, Institute of Cardiology, Warsaw, Poland
| | - Anna Wojciechowska
- Department of Medical Biology, Immunology Laboratory, Institute of Cardiology, Warsaw, Poland
| | - Mateusz Kuc
- Department of Cardiac Surgery and Transplantology, Institute of Cardiology, Warsaw, Poland
| | - Jakub Zielinski
- Department of Cardiac Surgery and Transplantology, Institute of Cardiology, Warsaw, Poland
| | - Adam Parulski
- Department of Cardiac Surgery and Transplantology, Institute of Cardiology, Warsaw, Poland
| | - Mariusz Kusmierczyk
- Department of Cardiac Surgery and Transplantology, Institute of Cardiology, Warsaw, Poland
| | - Anna Lutynska
- Department of Medical Biology, Institute of Cardiology, Warsaw, Poland
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8
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Peng G, Xu J, Liu R, Fu Z, Li S, Hong W, Chen J, Li B, Ran P. Isolation, culture and identification of pulmonary arterial smooth muscle cells from rat distal pulmonary arteries. Cytotechnology 2017; 69:831-840. [PMID: 28321780 DOI: 10.1007/s10616-017-0081-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 03/10/2017] [Indexed: 11/28/2022] Open
Abstract
The culture of pulmonary arterial smooth muscle cells (PASMCs) is one of the most powerful tools for exploring the mechanisms of pulmonary hypertension (PH). Both pulmonary vasoconstriction and remodeling occur predominantly in distal pulmonary arteries (PA). In this study, we provide our detailed and standardized protocol for easy isolation and culture of PASMCs from rat distal PA to supply every investigator with a simple, economical and useful method in studying PH. The protocol can be divided into four stages: isolation of distal PA, isolation of cells, growth in culture and passage of cells. Rat distal PASMCs were characterized by morphological activity and by immunostaining for smooth muscle α-actin and smooth muscle myosin heavy chain, but not for CD90/Thy-1 or von Willebrand factor. Furthermore, functional assessments were performed, confirming the presence of voltage-dependent Ca2+ channels and physiological characteristic of response to hypoxia. In conclusion, we have developed a detailed and simple protocol for obtaining rat distal PASMCs. These PASMCs exhibit features consistent with vascular smooth muscle cells, and they could subsequently be used to further explore the pathophysiological mechanisms of PH.
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Affiliation(s)
- Gongyong Peng
- Guangzhou Institute of Respiratory Disease, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, 151 Yanjiang Road, Guangzhou, 510120, Guangdong, People's Republic of China.
| | - Juan Xu
- Guangzhou Institute of Respiratory Disease, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, 151 Yanjiang Road, Guangzhou, 510120, Guangdong, People's Republic of China
| | - Rongmin Liu
- Guangzhou Institute of Respiratory Disease, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, 151 Yanjiang Road, Guangzhou, 510120, Guangdong, People's Republic of China
| | - Zhenli Fu
- Guangzhou Institute of Respiratory Disease, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, 151 Yanjiang Road, Guangzhou, 510120, Guangdong, People's Republic of China
| | - Shaoxing Li
- Guangzhou Institute of Respiratory Disease, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, 151 Yanjiang Road, Guangzhou, 510120, Guangdong, People's Republic of China.,Intensive Care Unit, Guangzhou Panyu Central Hospital, Guangzhou, Guangdong, People's Republic of China
| | - Wei Hong
- The Research Center of Experiment Medicine, Guangzhou Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Jinglong Chen
- Guangzhou Institute of Respiratory Disease, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, 151 Yanjiang Road, Guangzhou, 510120, Guangdong, People's Republic of China
| | - Bing Li
- The Research Center of Experiment Medicine, Guangzhou Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Pixin Ran
- Guangzhou Institute of Respiratory Disease, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, 151 Yanjiang Road, Guangzhou, 510120, Guangdong, People's Republic of China.
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9
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Zakharova IS, Zhiven' MK, Saaya SB, Shevchenko AI, Smirnova AM, Strunov A, Karpenko AA, Pokushalov EA, Ivanova LN, Makarevich PI, Parfyonova YV, Aboian E, Zakian SM. Endothelial and smooth muscle cells derived from human cardiac explants demonstrate angiogenic potential and suitable for design of cell-containing vascular grafts. J Transl Med 2017; 15:54. [PMID: 28257636 PMCID: PMC5336693 DOI: 10.1186/s12967-017-1156-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 02/22/2017] [Indexed: 01/25/2023] Open
Abstract
Background Endothelial and smooth muscle cells are considered promising resources for regenerative medicine and cell replacement therapy. It has been shown that both types of cells are heterogeneous depending on the type of vessels and organs in which they are located. Therefore, isolation of endothelial and smooth muscle cells from tissues relevant to the area of research is necessary for the adequate study of specific pathologies. However, sources of specialized human endothelial and smooth muscle cells are limited, and the search for new sources is still relevant. The main goal of our study is to demonstrate that functional endothelial and smooth muscle cells can be obtained from an available source—post-surgically discarded cardiac tissue from the right atrial appendage and right ventricular myocardium. Methods Heterogeneous primary cell cultures were enzymatically isolated from cardiac explants and then grown in specific endothelial and smooth muscle growth media on collagen IV-coated surfaces. The population of endothelial cells was further enriched by immunomagnetic sorting for CD31, and the culture thus obtained was characterized by immunocytochemistry, ultrastructural analysis and in vitro functional tests. The angiogenic potency of the cells was examined by injecting them, along with Matrigel, into immunodeficient mice. Cells were also seeded on characterized polycaprolactone/chitosan membranes with subsequent analysis of cell proliferation and function. Results Endothelial cells isolated from cardiac explants expressed CD31, VE-cadherin and VEGFR2 and showed typical properties, namely, cytoplasmic Weibel-Palade bodies, metabolism of acetylated low-density lipoproteins, formation of capillary-like structures in Matrigel, and production of extracellular matrix and angiogenic cytokines. Isolated smooth muscle cells expressed extracellular matrix components as well as α-actin and myosin heavy chain. Vascular cells derived from cardiac explants demonstrated the ability to stimulate angiogenesis in vivo. Endothelial cells proliferated most effectively on membranes made of polycaprolactone and chitosan blended in a 25:75 ratio, neutralized by a mixture of alkaline and ethanol. Endothelial and smooth muscle cells retained their functional properties when seeded on the blended membranes. Conclusions We established endothelial and smooth muscle cell cultures from human right atrial appendage and right ventricle post-operative explants. The isolated cells revealed angiogenic potential and may be a promising source of patient-specific cells for regenerative medicine. Electronic supplementary material The online version of this article (doi:10.1186/s12967-017-1156-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- I S Zakharova
- The Federal Research Center Institute of Cytology And Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation. .,Institute of Chemical Biology and Fundamental Medicine, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation. .,Siberian Federal Biomedical Research Center, Ministry of Health Care of Russian Federation, Novosibirsk, Russian Federation.
| | - M K Zhiven'
- The Federal Research Center Institute of Cytology And Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Institute of Chemical Biology and Fundamental Medicine, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Siberian Federal Biomedical Research Center, Ministry of Health Care of Russian Federation, Novosibirsk, Russian Federation
| | - Sh B Saaya
- Siberian Federal Biomedical Research Center, Ministry of Health Care of Russian Federation, Novosibirsk, Russian Federation
| | - A I Shevchenko
- The Federal Research Center Institute of Cytology And Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Institute of Chemical Biology and Fundamental Medicine, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Siberian Federal Biomedical Research Center, Ministry of Health Care of Russian Federation, Novosibirsk, Russian Federation.,Novosibirsk State University, Novosibirsk, Russian Federation
| | - A M Smirnova
- The Federal Research Center Institute of Cytology And Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Siberian Federal Biomedical Research Center, Ministry of Health Care of Russian Federation, Novosibirsk, Russian Federation.,Novosibirsk State University, Novosibirsk, Russian Federation
| | - A Strunov
- The Federal Research Center Institute of Cytology And Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - A A Karpenko
- Siberian Federal Biomedical Research Center, Ministry of Health Care of Russian Federation, Novosibirsk, Russian Federation
| | - E A Pokushalov
- Siberian Federal Biomedical Research Center, Ministry of Health Care of Russian Federation, Novosibirsk, Russian Federation
| | - L N Ivanova
- The Federal Research Center Institute of Cytology And Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Novosibirsk State University, Novosibirsk, Russian Federation
| | - P I Makarevich
- Laboratory of Angiogenesis, Russian Cardiology Research and Production Complex, Moscow, Russian Federation.,Laboratory of gene and cell therapy, Institute of regenerative medicine, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Y V Parfyonova
- Laboratory of Angiogenesis, Russian Cardiology Research and Production Complex, Moscow, Russian Federation.,Faculty of Medicine, Lomonosov Moscow State University, Moscow, Russian Federation
| | - E Aboian
- Division of Vascular Surgery, Palo Alto Medical Foundation, Burlingame, USA
| | - S M Zakian
- The Federal Research Center Institute of Cytology And Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Institute of Chemical Biology and Fundamental Medicine, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Siberian Federal Biomedical Research Center, Ministry of Health Care of Russian Federation, Novosibirsk, Russian Federation.,Novosibirsk State University, Novosibirsk, Russian Federation
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10
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Montezano AC, Lopes RAM, Neves KB, Rios F, Touyz RM. Isolation and Culture of Vascular Smooth Muscle Cells from Small and Large Vessels. Methods Mol Biol 2017; 1527:349-354. [PMID: 28116729 DOI: 10.1007/978-1-4939-6625-7_27] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Primary culture of vascular smooth muscle cells is an important in vitro model for the dissection of molecular mechanisms related to a specific physiological or pathological response at the cellular level. Cultured cells also provide an excellent model to study cell biology. This chapter describes a user-friendly and practical protocol for isolation of vascular smooth muscle cells from small and large vessels by enzymatic dissociation, which can be applied to vessels from different species, including rodents and humans.
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Affiliation(s)
- Augusto C Montezano
- Institute of Cardiovascular and Medical Sciences BHF Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow, G12 8TA, UK.
| | - Rheure A M Lopes
- Institute of Cardiovascular and Medical Sciences BHF Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow, G12 8TA, UK
| | - Karla B Neves
- Institute of Cardiovascular and Medical Sciences BHF Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow, G12 8TA, UK
| | - Francisco Rios
- Institute of Cardiovascular and Medical Sciences BHF Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow, G12 8TA, UK
| | - Rhian M Touyz
- Kidney Research Centre, Department of Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada
- Institute of Cardiovascular and Medical Sciences, British Heart Foundation Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow, G12 8TA, UK
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11
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Smooth muscle titin forms in vitro amyloid aggregates. Biosci Rep 2016; 36:BSR20160066. [PMID: 27129292 PMCID: PMC5293577 DOI: 10.1042/bsr20160066] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 04/01/2016] [Indexed: 01/07/2023] Open
Abstract
Amyloids are insoluble fibrous protein aggregates, and their accumulation is associated with amyloidosis and many neurodegenerative diseases, including Alzheimer's disease. In the present study, we report that smooth muscle titin (SMT; 500 kDa) from chicken gizzard forms amyloid aggregates in vitro. This conclusion is supported by EM data, fluorescence analysis using thioflavin T (ThT), Congo red (CR) spectroscopy and X-ray diffraction. Our dynamic light scattering (DLS) data show that titin forms in vitro amyloid aggregates with a hydrodynamic radius (Rh) of approximately 700–4500 nm. The initial titin aggregates with Rh approximately 700 nm were observed beyond first 20 min its aggregation that shows a high rate of amyloid formation by this protein. We also showed using confocal microscopy the cytotoxic effect of SMT amyloid aggregates on smooth muscle cells from bovine aorta. This effect involves the disorganization of the actin cytoskeleton and result is cell damage. Cumulatively, our results indicate that titin may be involved in generation of amyloidosis in smooth muscles.
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12
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Phenotypic and Functional Changes of Endothelial and Smooth Muscle Cells in Thoracic Aortic Aneurysms. Int J Vasc Med 2016; 2016:3107879. [PMID: 26904289 PMCID: PMC4745582 DOI: 10.1155/2016/3107879] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 12/03/2015] [Accepted: 12/14/2015] [Indexed: 11/18/2022] Open
Abstract
Thoracic aortic aneurysm develops as a result of complex series of events that alter the cellular structure and the composition of the extracellular matrix of the aortic wall. The purpose of the present work was to study the cellular functions of endothelial and smooth muscle cells from the patients with aneurysms of the thoracic aorta. We studied endothelial and smooth muscle cells from aneurysms in patients with bicuspid aortic valve and with tricuspid aortic valve. The expression of key markers of endothelial (CD31, vWF, and VE-cadherin) and smooth muscle (SMA, SM22α, calponin, and vimentin) cells as well extracellular matrix and MMP activity was studied as well as and apoptosis and cell proliferation. Expression of functional markers of endothelial and smooth muscle cells was reduced in patient cells. Cellular proliferation, migration, and synthesis of extracellular matrix proteins are attenuated in the cells of the patients. We show for the first time that aortic endothelial cell phenotype is changed in the thoracic aortic aneurysms compared to normal aortic wall. In conclusion both endothelial and smooth muscle cells from aneurysms of the ascending aorta have downregulated specific cellular markers and altered functional properties, such as growth rate, apoptosis induction, and extracellular matrix synthesis.
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13
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Liu K, Ying Z, Qi X, Shi Y, Tang Q. MicroRNA-1 regulates the proliferation of vascular smooth muscle cells by targeting insulin-like growth factor 1. Int J Mol Med 2015; 36:817-24. [PMID: 26166810 DOI: 10.3892/ijmm.2015.2277] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 05/29/2015] [Indexed: 11/06/2022] Open
Abstract
The aim of this study was to investigate the role of microRNAs (miRNAs or miRs) in vascular smooth muscle cell (VSMC) proliferation and to elucidate the underlying molecular mechanisms. In a previous study, using microarray analysis, differentially expressed miRNAs were identified in primary VSMCs isolated from the medial layer of the thoracic aorta obtained from spontaneously hypertensive rats (SHRs) and Wistar Kyoto (WKY) rats. Among others, miR-1 was identified to be downregulated in VSMCs from SHRs. Thus, in the present study, we focused on miR-1, the downregulation of which was confirmed by RT-qPCR and western blot analysis in VSMCs isolated from SHRs. We identified insulin-like growth factor 1 (IGF1) as a potential target gene of miR-1, and we subsequently validated IGF1 as a target gene of miR-1 by luciferase assay. The results revealed that the exogenous overexpression of miR-1 significantly suppressed the expression of IGF1. Additionally, we demonstrated that the downregulation of IGF1 by the introduction of miR-1 attenuated the proliferation of the VSMCs, suggesting that IGF1 is a target gene of miR-1 and that the effects of miR-1 are mediated through IGF1. In conclusion, the findings of our study demonstrate that miR-1 is significantly downregulated in VSMCs and that it is an important regulator of cell proliferation. Therefore, IGF1 may be involved in the regulation of VSMC proliferation by targeting miR-1.
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Affiliation(s)
- Kun Liu
- Department of Vascular Medicine, Peking University Shougang Hospital, Beijing, P.R. China
| | - Zhang Ying
- Department of Cardiology, the First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, P.R. China
| | - Xia Qi
- Transfusion Medicine Section, Department of Clinical Laboratory of Dalian Medical University, Dalian, Liaoning, P.R. China
| | - Ying Shi
- Beijing Youan Hospital, Beijing, P.R. China
| | - Qiang Tang
- Department of Vascular Medicine, Peking University Shougang Hospital, Beijing, P.R. China
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