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Huangfu H, Huang Z, Liao W, Zou T, Shang X, Yu H. M1 linear ubiquitination of LKB1 inhibits vascular endothelial cell injury in atherosclerosis through activation of AMPK. Hum Cell 2023; 36:1901-1914. [PMID: 37632629 DOI: 10.1007/s13577-023-00950-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 06/27/2023] [Indexed: 08/28/2023]
Abstract
Endothelial cell injury is confirmed to be the initial step in the atherosclerosis (AS) process. Here, we tried to elucidate the role of liver kinase B1 (LKB1) and adenosine phosphate protein kinase (AMPK) in modulating vascular endothelial cells (VECs) in AS. High-fat feed (HFD)-induced AS rat models were prepared and treated with AMPK activator A-769662 alone or combined with chloroquine. An analysis of VEC injury, inflammation response, and autophagy followed it. The M1 linear ubiquitination of LKB1 was assessed by co-immunoprecipitation. The interaction between LKB1 and AMPK was analyzed. Primary aortic VECs were isolated and induced by LPS to verify the effects of LKB1 and AMPK on VEC injury in AS. Activation of AMPK reduced the VEC injury and inflammatory response of VECs and promoted autophagy caused by AS. LKB1 could regulate the activation of AMPK in AS. M1 linear ubiquitination enhanced LKB1 activity and increased AMPK activation to protect against VEC injury in AS, which was validated by in vitro experiments. Our current study highlighted that M1 linear ubiquitination of LKB1 may induce the activation of LKB1 to activate AMPK, which inhibited VEC injury in AS.
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Affiliation(s)
- Haiquan Huangfu
- Department of Cardiology, Shenzhen Hospital of Shanghai University of Traditional Chinese Medicine, No. 16, Xiantong Road, Liantang Street, Luohu District, Shenzhen, 518004, Guangdong, People's Republic of China
| | - Zhichao Huang
- Department of Cardiology, Shenzhen Hospital of Shanghai University of Traditional Chinese Medicine, No. 16, Xiantong Road, Liantang Street, Luohu District, Shenzhen, 518004, Guangdong, People's Republic of China
| | - Weiqian Liao
- Department of Cardiology, Shenzhen Hospital of Shanghai University of Traditional Chinese Medicine, No. 16, Xiantong Road, Liantang Street, Luohu District, Shenzhen, 518004, Guangdong, People's Republic of China
| | - Tianyu Zou
- Department of Encephalopathy, Shenzhen Hospital of Shanghai University of Traditional Chinese Medicine, Shenzhen, 518004, People's Republic of China
| | - Xiaoming Shang
- Department of Cardiology, Shenzhen Hospital of Shanghai University of Traditional Chinese Medicine, No. 16, Xiantong Road, Liantang Street, Luohu District, Shenzhen, 518004, Guangdong, People's Republic of China.
| | - Hairui Yu
- Department of Cardiology, Shenzhen Hospital of Shanghai University of Traditional Chinese Medicine, No. 16, Xiantong Road, Liantang Street, Luohu District, Shenzhen, 518004, Guangdong, People's Republic of China.
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Wang H, Shi X, Guo Z, Zhao F, He W, Kang M, Lv Z. microRNA-211-5p predicts the progression of postmenopausal osteoporosis and attenuates osteogenesis by targeting dual specific phosphatase 6. Bioengineered 2022; 13:5709-5723. [PMID: 35188450 PMCID: PMC8973771 DOI: 10.1080/21655979.2021.2017626] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Postmenopausal osteoporosis (PMOP) is known as one of the prevalent diseases among middle-aged and elderly women. This paper revolves around the alteration of miR-211-5p in PMOP patients and its function in osteogenic differentiation. Quantitative real-time polymerase chain reaction (qRT-PCR) was implemented to check the miR-211-5p level in the plasma of PMOP patients. Knockdown and overexpression experiments were done to verify the influence of miR-211-5p on human-derived mesenchymal stem cell (hMSC) osteogenic differentiation and osteogenesis. The alkaline phosphatase (ALP) assay kit was taken to test ALP activity. Alizarin red staining monitored osteogenic differentiation, while oil red O staining examined adipogenesis. Western blot confirmed the profiles of osteoclastogenesis-concerned factors (TRAP, NFAT2, c-FOS, Runx2, OCN, CTSK), dual specific phosphatase 6 (DUSP6), ERK, SMAD, and β-catenin. Dual-luciferase reporter and RNA immunoprecipitation assays were implemented to identify the association between miR-211-5p and DUSP6. Our data displayed that miR-211-5p was down-regulated in the PMOP patients’ plasma (in contrast with the healthy controls), and it was positively correlated with Vit-D and BMD levels. miR-211-5p overexpression vigorously facilitated hMSC osteogenic differentiation, while miR-211-5p inhibition contributed to the opposite situation. miR-211-5p initiated the ERK/SMAD/β-catenin pathway and repressed DUSP6’s expression. Overexpression of DUSP6 counteracted the miR-211-5p-mediated function to a great extent and inactivated ERK/SMAD/β-catenin, whereas enhancing ERK phosphorylation weakened the DUSP6 overexpression-induced function. Consequently, this research unveiled that miR-211-5p promotes osteogenic differentiation by interfering with the DUSP6-mediated ERK/SMAD/β-catenin pathway.
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Affiliation(s)
- Huan Wang
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Xiaoyan Shi
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Zhenye Guo
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Feng Zhao
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Weifu He
- Department of Orthopaedics, West Hospital of Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Mingming Kang
- Department of Orthopaedics, West Hospital of Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Zhi Lv
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
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