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Yue J, Qi YF, Zhang WB, Liu SH, Chen H, Li ZZ, Wu HF. Single Nucleotide Polymorphisms Mutation of Tropoelastin Gene Affects Tropoelastin mRNA and Elastin Expressions in Human Aortic Smooth Muscle Cells. DNA Cell Biol 2023; 42:735-745. [PMID: 38011321 DOI: 10.1089/dna.2023.0108] [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] [Indexed: 11/29/2023] Open
Abstract
We aimed to explore the effects of single nucleotide polymorphisms (SNPs) in tropoelastin gene on tropoelastin mRNA and elastin expressions in human aortic smooth muscle cells (HASMCs). Two SNP loci, rs2071307 (G/A) and rs1785598 (G/C), were selected to construct recombinant lentivirus vectors carrying wild-type and mutant tropoelastin gene. Recombinant plasmids including pWSLV-02-ELN, pWSLV-02-ELN-mut1, and pWSLV-02-ELN-mut2 were constructed, before being amplified by polymerase chain reaction (PCR) and sequenced. The prepared plasmids and the packaging plasmids (pVSV-G and psPAX2) were cotransfected into HEK293T cells to obtain recombinant lentiviruses carrying tropoelastin gene. Afterward, HASMCs were infected with recombinant lentiviruses, and the positive cells sorted by flow cytometry were amplified. Four stable HASMCs cell lines including pWSLV-02-ELN, pWSLV-02-ELN-mut1, pWSLV-02-ELN-mut2, and pWSLV-02 vector were constructed. The expressions of tropoelastin mRNA and elastin in HASMCs were detected by real-time quantitative reverse transcription-PCR and western blot, respectively. Recombinant plasmids including pWSLV-02-ELN-mut1, pWSLV-02-ELN-mut2, and pWSLV-02-ELN were successfully constructed. Recombinant lentiviruses carrying tropoelastin gene were obtained via lentivirus packaging. After infection for 24 h, 3 days and 5 days in HASMCs, tropoelastin mRNA expressions in pWSLV-02-ELN-mut1 and pWSLV-02-ELN-mut2 groups were significantly lower than that of pWSLV-02-ELN group. Besides, after infection for 24 h, 3 days, and 5 days, elastin levels in pWSLV-02-ELN-mut1 and pWSLV-02-ELN-mut2 groups were significantly lower than that in pWSLV-02-ELN group. In conclusion, SNPs mutation of tropoelastin gene affected the expression of tropoelastin mRNA and elastin, suggesting that the polymorphisms of rs2071307 and rs17855988 in tropoelastin gene might be important factors for AD development.
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Affiliation(s)
- Jie Yue
- Department of Vascular Surgery, Hainan General Hospital, Haikou, People's Republic of China
- Department of Vascular Surgery, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, People's Republic of China
| | - You-Fei Qi
- Department of Vascular Surgery, Hainan General Hospital, Haikou, People's Republic of China
- Department of Vascular Surgery, Hainan Affiliated Hospital of Hainan Medical University, Haikou, People's Republic of China
| | - Wen-Bo Zhang
- Department of Vascular Surgery, Hainan General Hospital, Haikou, People's Republic of China
- Department of Vascular Surgery, Hainan Affiliated Hospital of Hainan Medical University, Haikou, People's Republic of China
| | - Sa-Hua Liu
- Department of Vascular Surgery, Hainan General Hospital, Haikou, People's Republic of China
- Department of Vascular Surgery, Hainan Affiliated Hospital of Hainan Medical University, Haikou, People's Republic of China
| | - Hao Chen
- Department of Vascular Surgery, Hainan General Hospital, Haikou, People's Republic of China
- Department of Vascular Surgery, Hainan Affiliated Hospital of Hainan Medical University, Haikou, People's Republic of China
| | - Zhen-Zhen Li
- Department of Vascular Surgery, Hainan General Hospital, Haikou, People's Republic of China
- Department of Vascular Surgery, Hainan Affiliated Hospital of Hainan Medical University, Haikou, People's Republic of China
| | - Hong-Fei Wu
- Department of Vascular Surgery, Hainan General Hospital, Haikou, People's Republic of China
- Department of Vascular Surgery, Hainan Affiliated Hospital of Hainan Medical University, Haikou, People's Republic of China
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Crofton AE, Kovacs SL, Stern JA. Subvalvular Aortic Stenosis: Learning From Human and Canine Clinical Research. Cardiol Res 2023; 14:319-333. [PMID: 37936623 PMCID: PMC10627371 DOI: 10.14740/cr1547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 10/03/2023] [Indexed: 11/09/2023] Open
Abstract
Subvalvular aortic stenosis (SAS) is the most common congenital heart disease (CHD) in dogs and is also prevalent in human children. A fibrous ridge below the aortic valve narrows the left ventricular outflow tract (LVOT) and increases blood flow velocity, leading to devastating side effects in diseased patients. Due to the similarities in presentation, anatomy, pathophysiology, cardiac development, genomics, and environment between humans and dogs, canine SAS patients represent a critical translational model of human SAS. Potential adverse outcomes of SAS include arrhythmias, left-sided congestive heart failure, endocarditis, exercise intolerance, syncope, and sudden cardiac death. The greatest divergence between canine and human SAS clinical research has been the standard of care regarding treatment of these outcomes, with pharmacological intervention dominating best practices in veterinary medicine and surgical intervention comprising the standard practice for human SAS patients. Regardless of the species, the field has yet to identify a treatment option to prevent disease progression or permanently remove the fibrous ridge, but historical leaps in SAS research support a continued translational approach as the most promising method for achieving this goal.
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Affiliation(s)
- Amanda E. Crofton
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California Davis, Davis, CA 95616, USA
| | - Samantha L. Kovacs
- Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California Davis, Davis, CA 95616, USA
| | - Joshua A. Stern
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA
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