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Tang X, Lai CH, Malhi NK, Chadha R, Luo Y, Liu X, Yuan D, Tapia A, Abdollahi M, Zhang G, Calandrelli R, Shiu YT, Wang ZV, Rhee JW, Zhong S, Natarajan R, Chen ZB. Genetic Deletion of the LINC00520 Homolog in Mouse Aggravates Angiotensin II-Induced Hypertension. Noncoding RNA 2023; 9:31. [PMID: 37218991 PMCID: PMC10204496 DOI: 10.3390/ncrna9030031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 05/24/2023] Open
Abstract
(1) Background: Hypertension is a complex, multifactorial disease that is caused by genetic and environmental factors. Apart from genetic predisposition, the mechanisms involved in this disease have yet to be fully understood. We previously reported that LEENE (lncRNA enhancing endothelial nitric oxide expression, transcribed from LINC00520 in the human genome) regulates endothelial cell (EC) function by promoting the expression of endothelial nitric oxide synthase (eNOS) and vascular growth factor receptor 2 (VEGFR2). Mice with genetic deletion of the LEENE/LINC00520 homologous region exhibited impaired angiogenesis and tissue regeneration in a diabetic hindlimb ischemia model. However, the role of LEENE in blood pressure regulation is unknown. (2) Methods: We subjected mice with genetic ablation of leene and wild-type littermates to Angiotensin II (AngII) and monitored their blood pressure and examined their hearts and kidneys. We used RNA-sequencing to identify potential leene-regulated molecular pathways in ECs that contributed to the observed phenotype. We further performed in vitro experiments with murine and human ECs and ex vivo experiments with murine aortic rings to validate the select mechanism. (3) Results: We identified an exacerbated hypertensive phenotype of leene-KO mice in the AngII model, evidenced by higher systolic and diastolic blood pressure. At the organ level, we observed aggravated hypertrophy and fibrosis in the heart and kidney. Moreover, the overexpression of human LEENE RNA, in part, restored the signaling pathways impaired by leene deletion in murine ECs. Additionally, Axitinib, a tyrosine kinase inhibitor that selectively inhibits VEGFR suppresses LEENE in human ECs. (4) Conclusions: Our study suggests LEENE as a potential regulator in blood pressure control, possibly through its function in ECs.
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Affiliation(s)
- Xiaofang Tang
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes Metabolism Research Institute and Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Chih-Hung Lai
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes Metabolism Research Institute and Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
- Cardiovascular Center, Taichung Veterans General Hospital, Taichung 40705, Taiwan
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei 40705, Taiwan
| | - Naseeb K. Malhi
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes Metabolism Research Institute and Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Rahuljeet Chadha
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes Metabolism Research Institute and Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91010, USA
| | - Yingjun Luo
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes Metabolism Research Institute and Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Xuejing Liu
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes Metabolism Research Institute and Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Dongqiang Yuan
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes Metabolism Research Institute and Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Alonso Tapia
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes Metabolism Research Institute and Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
- Irell and Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Maryam Abdollahi
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes Metabolism Research Institute and Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Guangyu Zhang
- Department of Diabetes and Cancer Metabolism, Arthur Riggs Diabetes Metabolism Research Institute and Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Riccardo Calandrelli
- Department of Bioengineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Yan-Ting Shiu
- Division of Nephrology & Hypertension, University of Utah, Salt Lake City, UT 84132, USA
- Veterans Affairs Salt Lake City Healthcare System, Salt Lake City, UT 84132, USA
| | - Zhao V. Wang
- Irell and Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
- Department of Diabetes and Cancer Metabolism, Arthur Riggs Diabetes Metabolism Research Institute and Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - June-Wha Rhee
- Department of Medicine, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA
| | - Sheng Zhong
- Department of Bioengineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Rama Natarajan
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes Metabolism Research Institute and Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
- Irell and Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
| | - Zhen Bouman Chen
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes Metabolism Research Institute and Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
- Irell and Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA
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