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Owaki R, Aoki H, Toriuchi K, Inoue Y, Hayashi H, Takeshita S, Kakita H, Yamada Y, Aoyama M. AMPK activators suppress cholesterol accumulation in macrophages via suppression of the mTOR pathway. Exp Cell Res 2023; 432:113784. [PMID: 37730144 DOI: 10.1016/j.yexcr.2023.113784] [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] [Received: 05/11/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 09/22/2023]
Abstract
Atherosclerosis is a persistent inflammatory state that contributes significantly to cardiovascular disease, a primary cause of mortality worldwide. Enhanced lipid uptake by macrophages and their transformation into foam cells play a key role in the development of atherosclerosis. Recent studies using in vivo mouse models indicated that activation of AMPK has anti-atherosclerotic effects by upregulating the expression of cholesterol efflux transporters in foam cells and promoting cholesterol efflux. However, the pathway downstream of AMPK that contributes to elevated expression of cholesterol efflux transporters remains unclear. In this study, we found that activation of AMPK by AICAR and metformin inhibits foam cell formation via suppression of mTOR in macrophages. Specifically, activation of AMPK indirectly reduced the phosphorylation level of mTOR at Ser2448 and promoted the expression of cholesterol efflux transporters and cholesterol efflux. These inhibitory effects on foam cell formation were counteracted by mTOR activators. Metformin, a more nonspecific AMPK activator than AICAR, appears to inhibit foam cell formation via anti-inflammatory effects in addition to suppression of the mTOR pathway. The results of this study suggest that the development of new drugs targeting AMPK activation and mTOR inhibition may lead to beneficial results in the prevention and treatment of atherosclerosis.
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Affiliation(s)
- Reina Owaki
- Department of Pathobiology, Nagoya City University Graduate School of Pharmaceutical Sciences, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi, 467-8603, Japan
| | - Hiromasa Aoki
- Department of Pathobiology, Nagoya City University Graduate School of Pharmaceutical Sciences, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi, 467-8603, Japan
| | - Kohki Toriuchi
- Department of Pathobiology, Nagoya City University Graduate School of Pharmaceutical Sciences, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi, 467-8603, Japan
| | - Yasumichi Inoue
- Department of Cell Signaling, Nagoya City University Graduate School of Pharmaceutical Sciences, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi, 467-8603, Japan
| | - Hidetoshi Hayashi
- Department of Cell Signaling, Nagoya City University Graduate School of Pharmaceutical Sciences, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi, 467-8603, Japan
| | - Satoru Takeshita
- Department of Pathobiology, Nagoya City University Graduate School of Pharmaceutical Sciences, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi, 467-8603, Japan; Department of Perinatal and Neonatal Medicine, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
| | - Hiroki Kakita
- Department of Pathobiology, Nagoya City University Graduate School of Pharmaceutical Sciences, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi, 467-8603, Japan; Department of Perinatal and Neonatal Medicine, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
| | - Yasumasa Yamada
- Department of Perinatal and Neonatal Medicine, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
| | - Mineyoshi Aoyama
- Department of Pathobiology, Nagoya City University Graduate School of Pharmaceutical Sciences, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi, 467-8603, Japan.
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Hwang YJ, Park JH, Cho DH. Far-Infrared Irradiation Decreases Proliferation in Basal and PDGF-Stimulated VSMCs Through AMPK-Mediated Inhibition of mTOR/p70S6K Signaling Axis. J Korean Med Sci 2023; 38:e335. [PMID: 37873631 PMCID: PMC10593596 DOI: 10.3346/jkms.2023.38.e335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 06/15/2023] [Indexed: 10/25/2023] Open
Abstract
BACKGROUND Far-infrared (FIR) irradiation has been reported to improve diverse cardiovascular diseases, including heart failure, hypertension, and atherosclerosis. The dysregulated proliferation of vascular smooth muscle cells (VSMCs) is well established to contribute to developing occlusive vascular diseases such as atherosclerosis and in-stent restenosis. However, the effects of FIR irradiation on VSMC proliferation and the underlying mechanism are unclear. This study investigated the molecular mechanism through which FIR irradiation inhibited VSMC proliferation. METHODS We performed cell proliferation and cell death assay, adenosine 5'-triphosphate (ATP) assay, inhibitor studies, transfection of dominant negative (dn)-AMP-activated protein kinase (AMPK) α1 gene, and western blot analyses. We also conducted confocal microscopic image analyses and ex vivo studies using isolated rat aortas. RESULTS FIR irradiation for 30 minutes decreased VSMC proliferation without altering the cell death. Furthermore, FIR irradiation accompanied decreases in phosphorylation of the mammalian target of rapamycin (mTOR) at Ser2448 (p-mTOR-Ser2448) and p70 S6 kinase (p70S6K) at Thr389 (p-p70S6K-Thr389). The phosphorylation of AMPK at Thr172 (p-AMPK-Thr172) was increased in FIR-irradiated VSMCs, which was accompanied by a decreased cellular ATP level. Similar to in vitro results, FIR irradiation increased p-AMPK-Thr172 and decreased p-mTOR-Ser2448 and p-p70S6K-Thr389 in isolated rat aortas. Pre-treatment with compound C, a specific AMPK inhibitor, or ectopic expression of dn-AMPKα1 gene, significantly reversed FIR irradiation-decreased VSMC proliferation, p-mTOR-Ser2448, and p-p70S6K-Thr389. On the other hand, hyperthermal stimulus (39°C) did not alter VSMC proliferation, cellular ATP level, and AMPK/mTOR/p70S6K phosphorylation. Finally, FIR irradiation attenuated platelet-derived growth factor (PDGF)-stimulated VSMC proliferation by increasing p-AMPK-Thr172, and decreasing p-mTOR-Ser2448 and p-p70S6K-Thr389 in PDGF-induced in vitro atherosclerosis model. CONCLUSION These results show that FIR irradiation decreases the basal and PDGF-stimulated VSMC proliferation, at least in part, by the AMPK-mediated inhibition of mTOR/p70S6K signaling axis irrespective of its hyperthermal effect. These observations suggest that FIR therapy can be used to treat arterial narrowing diseases, including atherosclerosis and in-stent restenosis.
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Affiliation(s)
- Yun-Jin Hwang
- Department of Pharmacology, College of Medicine, Yeungnam University, Daegu, Korea
| | | | - Du-Hyong Cho
- Department of Pharmacology, College of Medicine, Yeungnam University, Daegu, Korea.
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Villapol S, Janatpour ZC, Affram KO, Symes AJ. The Renin Angiotensin System as a Therapeutic Target in Traumatic Brain Injury. Neurotherapeutics 2023; 20:1565-1591. [PMID: 37759139 PMCID: PMC10684482 DOI: 10.1007/s13311-023-01435-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/31/2023] [Indexed: 09/29/2023] Open
Abstract
Traumatic brain injury (TBI) is a major public health problem, with limited pharmacological options available beyond symptomatic relief. The renin angiotensin system (RAS) is primarily known as a systemic endocrine regulatory system, with major roles controlling blood pressure and fluid homeostasis. Drugs that target the RAS are used to treat hypertension, heart failure and kidney disorders. They have now been used chronically by millions of people and have a favorable safety profile. In addition to the systemic RAS, it is now appreciated that many different organ systems, including the brain, have their own local RAS. The major ligand of the classic RAS, Angiotensin II (Ang II) acts predominantly through the Ang II Type 1 receptor (AT1R), leading to vasoconstriction, inflammation, and heightened oxidative stress. These processes can exacerbate brain injuries. Ang II receptor blockers (ARBs) are AT1R antagonists. They have been shown in several preclinical studies to enhance recovery from TBI in rodents through improvements in molecular, cellular and behavioral correlates of injury. ARBs are now under consideration for clinical trials in TBI. Several different RAS peptides that signal through receptors distinct from the AT1R, are also potential therapeutic targets for TBI. The counter regulatory RAS pathway has actions that oppose those stimulated by AT1R signaling. This alternative pathway has many beneficial effects on cells in the central nervous system, bringing about vasodilation, and having anti-inflammatory and anti-oxidative stress actions. Stimulation of this pathway also has potential therapeutic value for the treatment of TBI. This comprehensive review will provide an overview of the various components of the RAS, with a focus on their direct relevance to TBI pathology. It will explore different therapeutic agents that modulate this system and assess their potential efficacy in treating TBI patients.
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Affiliation(s)
- Sonia Villapol
- Department of Neurosurgery, Houston Methodist Hospital, Houston, TX, USA
| | - Zachary C Janatpour
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD, 20814, USA
| | - Kwame O Affram
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD, 20814, USA
| | - Aviva J Symes
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD, 20814, USA.
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Samson M, Genet C, Corbera-Bellalta M, Greigert H, Espígol-Frigolé G, Gérard C, Cladière C, Alba-Rovira R, Ciudad M, Gabrielle PH, Creuzot-Garcher C, Tarris G, Martin L, Saas P, Audia S, Bonnotte B, Cid MC. Human monocyte-derived suppressive cells (HuMoSC) for cell therapy in giant cell arteritis. Front Immunol 2023; 14:1137794. [PMID: 36895571 PMCID: PMC9989212 DOI: 10.3389/fimmu.2023.1137794] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 02/06/2023] [Indexed: 02/25/2023] Open
Abstract
Introduction The pathogenesis of Giant Cell Arteritis (GCA) relies on vascular inflammation and vascular remodeling, the latter being poorly controlled by current treatments. Methods This study aimed to evaluate the effect of a novel cell therapy, Human Monocyte-derived Suppressor Cells (HuMoSC), on inflammation and vascular remodeling to improve GCA treatment. Fragments of temporal arteries (TAs) from GCA patients were cultured alone or in the presence of HuMoSCs or their supernatant. After five days, mRNA expression was measured in the TAs and proteins were measured in culture supernatant. The proliferation and migration capacity of vascular smooth muscle cells (VSMCs) were also analyzed with or without HuMoSC supernatant. Results Transcripts of genes implicated in vascular inflammation (CCL2, CCR2, CXCR3, HLADR), vascular remodeling (PDGF, PDGFR), angiogenesis (VEGF) and extracellular matrix composition (COL1A1, COL3A1 and FN1) were decreased in arteries treated with HuMoSCs or their supernatant. Likewise, concentrations of collagen-1 and VEGF were lower in the supernatants of TAs cultivated with HuMoSCs. In the presence of PDGF, the proliferation and migration of VSMCs were both decreased after treatment with HuMoSC supernatant. Study of the PDGF pathway suggests that HuMoSCs act through inhibition of mTOR activity. Finally, we show that HuMoSCs could be recruited in the arterial wall through the implication of CCR5 and its ligands. Conclusion Altogether, our results suggest that HuMoSCs or their supernatant could be useful to decrease vascular in flammation and remodeling in GCA, the latter being an unmet need in GCA treatment.
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Affiliation(s)
- Maxime Samson
- Department of Internal Medicine and Clinical Immunology, Dijon University Hospital, Dijon, France.,Université Bourgogne Franche-Comté, INSERM, Etablissement Français du Sang, Bourgogne Franche-Comté (EFS BFC), UMR1098, RIGHT Interactions Greffon-Hôte-Tumeur/Ingénierie Cellulaire et Génique, Dijon, France.,Vasculitis Research Unit, Department of Autoimmune Diseases, Hospital Clinic, University of Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), CRB-CELLEX, Barcelona, Spain
| | - Coraline Genet
- Université Bourgogne Franche-Comté, INSERM, Etablissement Français du Sang, Bourgogne Franche-Comté (EFS BFC), UMR1098, RIGHT Interactions Greffon-Hôte-Tumeur/Ingénierie Cellulaire et Génique, Dijon, France
| | - Marc Corbera-Bellalta
- Vasculitis Research Unit, Department of Autoimmune Diseases, Hospital Clinic, University of Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), CRB-CELLEX, Barcelona, Spain
| | - Hélène Greigert
- Department of Internal Medicine and Clinical Immunology, Dijon University Hospital, Dijon, France.,Université Bourgogne Franche-Comté, INSERM, Etablissement Français du Sang, Bourgogne Franche-Comté (EFS BFC), UMR1098, RIGHT Interactions Greffon-Hôte-Tumeur/Ingénierie Cellulaire et Génique, Dijon, France
| | - Georgina Espígol-Frigolé
- Vasculitis Research Unit, Department of Autoimmune Diseases, Hospital Clinic, University of Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), CRB-CELLEX, Barcelona, Spain
| | - Claire Gérard
- Université Bourgogne Franche-Comté, INSERM, Etablissement Français du Sang, Bourgogne Franche-Comté (EFS BFC), UMR1098, RIGHT Interactions Greffon-Hôte-Tumeur/Ingénierie Cellulaire et Génique, Dijon, France
| | - Claudie Cladière
- Université Bourgogne Franche-Comté, INSERM, Etablissement Français du Sang, Bourgogne Franche-Comté (EFS BFC), UMR1098, RIGHT Interactions Greffon-Hôte-Tumeur/Ingénierie Cellulaire et Génique, Dijon, France
| | - Roser Alba-Rovira
- Vasculitis Research Unit, Department of Autoimmune Diseases, Hospital Clinic, University of Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), CRB-CELLEX, Barcelona, Spain
| | - Marion Ciudad
- Université Bourgogne Franche-Comté, INSERM, Etablissement Français du Sang, Bourgogne Franche-Comté (EFS BFC), UMR1098, RIGHT Interactions Greffon-Hôte-Tumeur/Ingénierie Cellulaire et Génique, Dijon, France
| | | | | | - Georges Tarris
- Department of Pathology, Dijon University Hospital, Dijon, France
| | - Laurent Martin
- Department of Pathology, Dijon University Hospital, Dijon, France
| | - Philippe Saas
- Université Bourgogne Franche-Comté, INSERM, Etablissement Français du Sang, Bourgogne Franche-Comté (EFS BFC), UMR1098, RIGHT Interactions Greffon-Hôte-Tumeur/Ingénierie Cellulaire et Génique, Dijon, France.,Centre d'investigation clinique (CIC)-1431, INSERM, Besançon University Hospital, Etablissement Français du Sang (EFS), Besançon, France
| | - Sylvain Audia
- Department of Internal Medicine and Clinical Immunology, Dijon University Hospital, Dijon, France.,Université Bourgogne Franche-Comté, INSERM, Etablissement Français du Sang, Bourgogne Franche-Comté (EFS BFC), UMR1098, RIGHT Interactions Greffon-Hôte-Tumeur/Ingénierie Cellulaire et Génique, Dijon, France
| | - Bernard Bonnotte
- Department of Internal Medicine and Clinical Immunology, Dijon University Hospital, Dijon, France.,Université Bourgogne Franche-Comté, INSERM, Etablissement Français du Sang, Bourgogne Franche-Comté (EFS BFC), UMR1098, RIGHT Interactions Greffon-Hôte-Tumeur/Ingénierie Cellulaire et Génique, Dijon, France
| | - Maria C Cid
- Vasculitis Research Unit, Department of Autoimmune Diseases, Hospital Clinic, University of Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), CRB-CELLEX, Barcelona, Spain
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Nimma R, Kalvala AK, Patel N, Surapaneni SK, Sun L, Singh R, Nottingham E, Bagde A, Kommineni N, Arthur P, Nathani A, Meckes DG, Singh M. Combined Transcriptomic and Proteomic Profiling to Unravel Osimertinib, CARP-1 Functional Mimetic (CFM 4.17) Formulation and Telmisartan Combo Treatment in NSCLC Tumor Xenografts. Pharmaceutics 2022; 14:pharmaceutics14061156. [PMID: 35745729 PMCID: PMC9230742 DOI: 10.3390/pharmaceutics14061156] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/30/2022] [Accepted: 05/11/2022] [Indexed: 01/05/2023] Open
Abstract
The epidermal growth factor receptor (EGFR) is highly expressed in many non-small cell lung cancers (NSCLC), necessitating the use of EGFR-tyrosine kinase inhibitors (TKIs) as first-line treatments. Osimertinib (OSM), a third-generation TKI, is routinely used in clinics, but T790M mutations in exon 20 of the EGFR receptor lead to resistance against OSM, necessitating the development of more effective therapeutics. Telmisartan (TLM), OSM, and cell cycle and apoptosis regulatory protein 1 (CARP-1) functional mimetic treatments (CFM4.17) were evaluated in this study against experimental H1975 tumor xenografts to ascertain their anti-cancer effects. Briefly, tumor growth was studied in H1975 xenografts in athymic nude mice, gene and protein expressions were analyzed using next-generation RNA sequencing, proteomics, RT-PCR, and Western blotting. TLM pre-treatment significantly reduced the tumor burden when combined with CFM-4.17 nanoformulation and OSM combination (TLM_CFM-F_OSM) than their respective single treatments or combination of OSM and TLM with CFM 4.17. Data from RNA sequencing and proteomics revealed that TLM_CFM-F_OSM decreased the expression of Lamin B2, STAT3, SOD, NFKB, MMP-1, TGF beta, Sox-2, and PD-L1 proteins while increasing the expression of AMPK proteins, which was also confirmed by RT-PCR, proteomics, and Western blotting. According to our findings, the TLM_CFM-F_OSM combination has a superior anti-cancer effect in the treatment of NSCLC by affecting multiple resistant markers that regulate mitochondrial homeostasis, inflammation, oxidative stress, and apoptosis.
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Affiliation(s)
- Ramesh Nimma
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA; (R.N.); (A.K.K.); (N.P.); (S.K.S.); (E.N.); (A.B.); (N.K.); (P.A.); (A.N.)
| | - Anil Kumar Kalvala
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA; (R.N.); (A.K.K.); (N.P.); (S.K.S.); (E.N.); (A.B.); (N.K.); (P.A.); (A.N.)
| | - Nilkumar Patel
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA; (R.N.); (A.K.K.); (N.P.); (S.K.S.); (E.N.); (A.B.); (N.K.); (P.A.); (A.N.)
| | - Sunil Kumar Surapaneni
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA; (R.N.); (A.K.K.); (N.P.); (S.K.S.); (E.N.); (A.B.); (N.K.); (P.A.); (A.N.)
| | - Li Sun
- Department of Biomedical Sciences, College of Medicine, Florida State University, 1115 West Call Street, Tallahassee, FL 32306, USA; (L.S.); (D.G.M.J.)
| | - Rakesh Singh
- Department of Translational Science Laboratory, College of Medicine, Florida State University, 1115 West Call St., Tallahassee, FL 32306, USA;
| | - Ebony Nottingham
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA; (R.N.); (A.K.K.); (N.P.); (S.K.S.); (E.N.); (A.B.); (N.K.); (P.A.); (A.N.)
| | - Arvind Bagde
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA; (R.N.); (A.K.K.); (N.P.); (S.K.S.); (E.N.); (A.B.); (N.K.); (P.A.); (A.N.)
| | - Nagavendra Kommineni
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA; (R.N.); (A.K.K.); (N.P.); (S.K.S.); (E.N.); (A.B.); (N.K.); (P.A.); (A.N.)
| | - Peggy Arthur
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA; (R.N.); (A.K.K.); (N.P.); (S.K.S.); (E.N.); (A.B.); (N.K.); (P.A.); (A.N.)
| | - Aakash Nathani
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA; (R.N.); (A.K.K.); (N.P.); (S.K.S.); (E.N.); (A.B.); (N.K.); (P.A.); (A.N.)
| | - David G. Meckes
- Department of Biomedical Sciences, College of Medicine, Florida State University, 1115 West Call Street, Tallahassee, FL 32306, USA; (L.S.); (D.G.M.J.)
| | - Mandip Singh
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA; (R.N.); (A.K.K.); (N.P.); (S.K.S.); (E.N.); (A.B.); (N.K.); (P.A.); (A.N.)
- Correspondence: or ; Tel.: +1-850-561-2790; Fax: +1-850-599-3813
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Huang WQ, Zou Y, Tian Y, Ma XF, Zhou QY, Li ZY, Gong SX, Wang AP. Mammalian Target of Rapamycin as the Therapeutic Target of Vascular Proliferative Diseases: Past, Present, and Future. J Cardiovasc Pharmacol 2022; 79:444-455. [PMID: 34983907 DOI: 10.1097/fjc.0000000000001208] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 12/16/2021] [Indexed: 11/26/2022]
Abstract
ABSTRACT The abnormal proliferation of vascular smooth muscle cells (VSMCs) is a key pathological characteristic of vascular proliferative diseases. Mammalian target of rapamycin (mTOR) is an evolutionarily conserved serine/threonine kinase that plays an important role in regulating cell growth, motility, proliferation, and survival, as well as gene expression in response to hypoxia, growth factors, and nutrients. Increasing evidence shows that mTOR also regulates VSMC proliferation in vascular proliferative diseases and that mTOR inhibitors, such as rapamycin, effectively restrain VSMC proliferation. However, the molecular mechanisms linking mTOR to vascular proliferative diseases remain elusive. In our review, we summarize the key roles of the mTOR and the recent discoveries in vascular proliferative diseases, focusing on the therapeutic potential of mTOR inhibitors to target the mTOR signaling pathway for the treatment of vascular proliferative diseases. In this study, we discuss mTOR inhibitors as promising candidates to prevent VSMC-associated vascular proliferative diseases.
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Affiliation(s)
- Wen-Qian Huang
- Institute of Clinical Research, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, PR China
- Department of Physiology, Institute of Neuroscience Research, Hengyang Key Laboratory of Neurodegeneration and Cognitive Impairment, Hengyang Medical School, University of South China, Hengyang, Hunan, PR China
| | - Yan Zou
- Department of Hand and Foot Surgery, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, PR China ; and
| | - Ying Tian
- Institute of Clinical Research, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, PR China
| | - Xiao-Feng Ma
- Institute of Clinical Research, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, PR China
| | - Qin-Yi Zhou
- Institute of Clinical Research, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, PR China
- Department of Physiology, Institute of Neuroscience Research, Hengyang Key Laboratory of Neurodegeneration and Cognitive Impairment, Hengyang Medical School, University of South China, Hengyang, Hunan, PR China
| | - Zhen-Yu Li
- Institute of Clinical Research, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, PR China
- Department of Physiology, Institute of Neuroscience Research, Hengyang Key Laboratory of Neurodegeneration and Cognitive Impairment, Hengyang Medical School, University of South China, Hengyang, Hunan, PR China
| | - Shao-Xin Gong
- Department of Pathology, First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, PR China
| | - Ai-Ping Wang
- Institute of Clinical Research, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, PR China
- Department of Physiology, Institute of Neuroscience Research, Hengyang Key Laboratory of Neurodegeneration and Cognitive Impairment, Hengyang Medical School, University of South China, Hengyang, Hunan, PR China
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7
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Xiang Y, Li L, Xia S, Lv J, Li X. Cullin3 (CUL3) suppresses proliferation, migration and phenotypic transformation of PDGF-BB-stimulated vascular smooth muscle cells and mitigates inflammatory response by repressing Hedgehog signaling pathway. Bioengineered 2021; 12:9463-9472. [PMID: 34699319 PMCID: PMC8809906 DOI: 10.1080/21655979.2021.1995572] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Vascular smooth muscle cell (VSMC) hyperplasia is closely associated with AS progression. Hence, it is of great significance to elucidate the molecular mechanisms underlying the involvement of VSMCs in AS. SHH antagonist can inhibit the excessive proliferation, migration and phenotypic transformation of PDGF-BB-induced VSMCs. It has been proved that CUL3 can suppress Hedgehog signaling. This current work was designed to identify the biological role of CUL3 in the behaviors of VSMCs in AS and investigate the potential molecular mechanism. VSMCs were treated with PDGF-BB to establish the cell model in vitro. Levels of CUL3, SHH and Gli1 in PDGF-BB-stimulated VSMCs were measured by RT-qPCR analysis. Then, the precise functions of CUL3 in VSMCs were determined from the perspectives of proliferation, migration, apoptosis and phenotype transformation. Besides, the influence of CUL3 on inflammatory response in VSMCs was evaluated. Moreover, the impact of CUL3 on Hedgehog signaling pathway was also investigated. In the present research, it was observed that CUL3 was lowly expressed and SHH and Gli1 were highly expressed in PDGF-BB-stimulated VSMCs. Upregulation of CUL3 suppressed the excessive proliferation, migration and phenotypic transformation and facilitated the apoptosis of PDGF-BB-stimulated VSMCs. In addition, elevation of CUL3 alleviated inflammatory response in PDGF-BB-stimulated VSMCs. Importantly, CUL3 overexpression inactivated Hedgehog signaling pathway. To conclude, CUL3 might regulate the biological behaviors of VSMCs in AS by modulating Hedgehog signaling pathway. These data encourage to further investigate any potential therapeutic role of CUL3 in animal models of AS and explore therapeutic values for AS clinically.
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Affiliation(s)
- Yuluan Xiang
- Department of Gerontology and Special Medical Services, The First Affiliated Hospital of Dali University, Dali, 671000, Yunnan, China
| | - Lihua Li
- Department of Gerontology and Special Medical Services, The First Affiliated Hospital of Dali University, Dali, 671000, Yunnan, China
| | - Shuang Xia
- Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510100, Guangdong, China
| | - Jinlin Lv
- Department of Gerontology and Special Medical Services, The First Affiliated Hospital of Dali University, Dali, 671000, Yunnan, China
| | - Xiaoling Li
- Department of cardiovascular medicine, People's Hospital of Fengjie, Chongqing, 404600, China
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