2. Academic Validation
  3. Tudor-SN exacerbates pathological vascular remodeling by promoting the polyubiquitination of PTEN via NEDD4-1

Tudor-SN exacerbates pathological vascular remodeling by promoting the polyubiquitination of PTEN via NEDD4-1

  • J Biomed Sci. 2024 Sep 5;31(1):88. doi: 10.1186/s12929-024-01076-9.
Yichen Wu # 1 2 3 4,  Zilong Chen # 1 2,  Zhe Zheng 5,  Xiaoguang Li 2,  Jiangcheng Shu 2,  Ruiqi Mao 1 2,  Jie An 1 2,  Siyuan Fan 1 2,  Ruijie Luo 1 2,  Yi Guo 1 2,  Wenjing Xu 1,  Minglu Liang 2 3 4,  Kai Huang 6 7 8 9,  Cheng Wang 10 11 12 13
Affiliations

Affiliations

  • 1 Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Ave, Wuhan, 430022, Hubei, China.
  • 2 Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China.
  • 3 Hubei Key Laboratory of Metabolic Abnormalities and Vascular Aging, Wuhan, China.
  • 4 Hubei Clinical Research Center for Metabolic and Cardiovascular Disease, Wuhan, China.
  • 5 Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China.
  • 6 Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Ave, Wuhan, 430022, Hubei, China. huangkaiunion@gmail.com.
  • 7 Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China. huangkaiunion@gmail.com.
  • 8 Hubei Key Laboratory of Metabolic Abnormalities and Vascular Aging, Wuhan, China. huangkaiunion@gmail.com.
  • 9 Hubei Clinical Research Center for Metabolic and Cardiovascular Disease, Wuhan, China. huangkaiunion@gmail.com.
  • 10 Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China. cwangunion@hust.edu.cn.
  • 11 Department of Rheumatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Ave, Wuhan, 430022, Hubei, China. cwangunion@hust.edu.cn.
  • 12 Hubei Key Laboratory of Metabolic Abnormalities and Vascular Aging, Wuhan, China. cwangunion@hust.edu.cn.
  • 13 Hubei Clinical Research Center for Metabolic and Cardiovascular Disease, Wuhan, China. cwangunion@hust.edu.cn.
  • # Contributed equally.
PMID: 39237902 DOI: 10.1186/s12929-024-01076-9
Abstract

Background: Dysregulation of vascular homeostasis can induce cardiovascular diseases and increase global mortality rates. Although lineage tracing studies have confirmed the pivotal role of modulated vascular smooth muscle cells (VSMCs) in the progression of pathological vascular remodeling, the underlying mechanisms are still unclear.

Methods: The expression of Tudor-SN was determined in VSMCs of artery stenosis, PDGF-BB-treated VSMCs and atherosclerotic plaque. Loss- and gain-of-function approaches were used to explore the role of Tudor-SN in the modulation of VSMCs phenotype both in vivo and in vitro.

Results: In this study, we demonstrate that Tudor-SN expression is significantly elevated in injury-induced arteries, atherosclerotic plaques, and PDGF-BB-stimulated VSMCs. Tudor-SN deficiency attenuates, but overexpression aggravates the synthetic phenotypic switching of VSMCs and pathological vascular remodeling. Loss of Tudor-SN also reduces atherosclerotic plaque formation and increases plaque stability. Mechanistically, PTEN, the major regulator of the MAPK and PI3K-AKT signaling pathways, plays a vital role in Tudor-SN-mediated regulation on proliferation and migration of VSMCs. Tudor-SN facilitates the polyubiquitination and degradation of PTEN via NEDD4-1, thus exacerbating vascular remodeling under pathological conditions. BpV (HOpic), a specific inhibitor of PTEN, not only counteracts the protective effect of Tudor-SN deficiency on proliferation and migration of VSMCs, but also abrogates the negative effect of carotid artery injury-induced vascular remodeling in mice.

Conclusions: Our findings reveal that Tudor-SN deficiency significantly ameliorated pathological vascular remodeling by reducing NEDD4-1-dependent PTEN polyubiquitination, suggesting that Tudor-SN may be a novel target for preventing vascular diseases.

Keywords

Polyubiquitination; Smooth muscle cells; Tudor-SN; Vascular remodeling.

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