ArticleCirculation research2014
OxLDL triggers retrograde translocation of arginase2 in aortic endothelial cells via ROCK and mitochondrial processing peptidase.
Article in Circulation research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 1 of them a synthesis that pooled it.
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50 citing papers in PubMed, 1 synthesis or guideline pooled it, 91 citations in OpenAlex.
- Action mechanism and cardiovascular effect of anthocyanins: a systematic review of animal and human studies.Journal of translational medicine · 2016Pooled it
- Differential Expression and Function of Arginase in Mouse Uterus During Early Pregnancy.International journal of molecular sciences · 2026Article
- ROCK signaling at the crossroads of redox stress, mitochondrial dynamics, and metabolic disease.Redox biology · 2026Review
- Abnormal β-Hydroxybutyrylation Modification of ARG1 Drives Reprogramming of Arginine Metabolism to Promote the Progression of Colorectal Cancer.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Exploring the role of parthanatos in CNS injury: Molecular insights and therapeutic approaches.Journal of advanced research · 2025Review
- L-arginine ameliorates hypertension and cardiac mitochondrial abnormalities but not cardiac injury in male metabolic syndrome rats.Physiological reports · 2025Article
- Pathophysiology of Arginases in Cancer and Efforts in Their Pharmacological Inhibition.International journal of molecular sciences · 2024Review
- Age-related secretion of grancalcin by macrophages induces skeletal stem/progenitor cell senescence during fracture healing.Bone research · 2024Article
- OxLDL/LOX-1 mediated sex, age, stiffness, and endothelial dependent alterations in mouse thoracic aortic vascular reactivity.Frontiers in physiology · 2024Article
- Advancements in mitochondrial-targeted nanotherapeutics: overcoming biological obstacles and optimizing drug delivery.Frontiers in immunology · 2024Review
- Liver-Inspired Polyetherketoneketone Scaffolds Simulate Regenerative Signals and Mobilize Anti-Inflammatory Reserves to Reprogram Macrophage Metabolism for Boosted Osteoporotic Osseointegration.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2023Article
- Methylglyoxal-Modified Albumin Effects on Endothelial Arginase Enzyme and Vascular Function.Cells · 2023Article
- Construction and evaluation of endometriosis diagnostic prediction model and immune infiltration based on efferocytosis-related genes.Frontiers in molecular biosciences · 2023Article
- Arginase II protein regulates Parkin-dependent p32 degradation that contributes to Ca2+-dependent eNOS activation in endothelial cells.Cardiovascular research · 2022Article
- Signal Transduction during Metabolic and Inflammatory Reprogramming in Pulmonary Vascular Remodeling.International journal of molecular sciences · 2022Review
- Novel Therapeutics for Diabetic Retinopathy and Diabetic Macular Edema: A Pathophysiologic Perspective.Frontiers in physiology · 2022Review
- ROS-triggered endothelial cell death mechanisms: Focus on pyroptosis, parthanatos, and ferroptosis.Frontiers in immunology · 2022Review
- The Induction of Endothelial Autophagy and Its Role in the Development of Atherosclerosis.Frontiers in cardiovascular medicine · 2022Review
- Acute hypoxia elevates arginase 2 and induces polyamine stress response in zebrafish via evolutionarily conserved mechanism.Cellular and molecular life sciences : CMLS · 2021Article
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Abstract
rationaleIncreased arginase activity contributes to endothelial dysfunction by competition for l-arginine substrate and reciprocal regulation of nitric oxide synthase (NOS). The rapid increase in arginase activity in human aortic endothelial cells exposed to oxidized low-density lipoprotein (OxLDL) is consistent with post-translational modification or subcellular trafficking.
objectiveTo test the hypotheses that OxLDL triggers reverse translocation of mitochondrial arginase 2 (Arg2) to cytosol and Arg2 activation, and that this process is dependent on mitochondrial processing peptidase, lectin-like OxLDL receptor-1 receptor, and rho kinase. METHODS AND
resultsOxLDL-triggered translocation of Arg2 from mitochondria to cytosol in human aortic endothelial cells and in murine aortic intima with a concomitant rise in arginase activity. All of these changes were abolished by inhibition of mitochondrial processing peptidase or by its siRNA-mediated knockdown. Rho kinase inhibition and the absence of the lectin-like OxLDL receptor-1 in knockout mice also ablated translocation. Aminoterminal sequencing of Arg2 revealed 2 candidate mitochondrial targeting sequences, and deletion of either of these confined Arg2 to the cytoplasm. Inhibitors of mitochondrial processing peptidase or lectin-like OxLDL receptor-1 knockout attenuated OxLDL-mediated decrements in endothelial-specific NO production and increases in superoxide generation. Finally, Arg2(-/-) mice bred on an ApoE(-/-) background showed reduced plaque load, reduced reactive oxygen species production, enhanced NO, and improved endothelial function when compared with ApoE(-/-) controls.
conclusionsThese data demonstrate dual distribution of Arg2, a protein with an unambiguous mitochondrial targeting sequence, in mammalian cells, and its reverse translocation to cytoplasm by alterations in the extracellular milieu. This novel molecular mechanism drives OxLDL-mediated arginase activation, endothelial NOS uncoupling, endothelial dysfunction, and atherogenesis.
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