1
|
Pisklova M, Osmak G. Unveiling MiRNA-124 as a biomarker in hypertrophic cardiomyopathy: An innovative approach using machine learning and intelligent data analysis. Int J Cardiol 2024; 410:132220. [PMID: 38815672 DOI: 10.1016/j.ijcard.2024.132220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Accepted: 05/27/2024] [Indexed: 06/01/2024]
Abstract
BACKGROUND Hypertrophic cardiomyopathy (HCM) is a widespread hereditary cardiac pathology characterized by thickened heart walls and rearrangement of cardiomyocytes. Despite extensive research, the mechanisms underlying HCM development remain poorly understood, impeding the development of effective therapeutic and diagnostic strategies. Recent studies have suggested a polygenic nature of HCM development alongside monogenic forms. Transcriptomic profiling is a valuable tool for investigating such diseases. In this study, we propose a novel approach to study regulatory microRNAs (miRNAs) in the context of HCM, utilizing state-of-the-art data analysis tools. METHODS AND RESULTS Our method involves applying the Monte Carlo simulation and machine learning algorithm to transcriptomic data to generate high-capacity classifiers for HCM. From these classifiers, we extract key genes crucial for their performance, resulting in the identification of 16 key genes. Subsequently, we narrow down the pool of miRNAs by selecting those that may target the greatest number of key genes within the best models. We particularly focused on miR-124-3p, which we validated to have an association with HCM on an independent dataset. Subsequent investigation of its function revealed involvement of miR-124-3p in the RhoA signaling pathway. CONCLUSIONS In this study we propose a new approach to analyze transcriptomic data to search for microRNAs associated with a disease. Using this approach for transcriptomic profiling data of patients with HCM, we identified miR-124-3p as a potential regulator of the RhoA signaling pathway in the pathogenesis of HCM.
Collapse
Affiliation(s)
- Maria Pisklova
- E.I. Chazov National Medical Research Center for Cardiology, Academician Chazov st. 15a, 121552 Moscow, Russia; Pirogov Russian National Research Medical University, Ostrovitianov st. 1, 117997 Moscow, Russia
| | - German Osmak
- E.I. Chazov National Medical Research Center for Cardiology, Academician Chazov st. 15a, 121552 Moscow, Russia; Pirogov Russian National Research Medical University, Ostrovitianov st. 1, 117997 Moscow, Russia.
| |
Collapse
|
2
|
Boligala GP, Yang MV, van Wunnik JC, Pruitt K. Nuclear Dishevelled: An enigmatic role in governing cell fate and Wnt signaling. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2022; 1869:119305. [PMID: 35688346 DOI: 10.1016/j.bbamcr.2022.119305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/26/2022] [Accepted: 05/29/2022] [Indexed: 06/15/2023]
Abstract
The Dishevelled gene was first identified in Drosophila mutants with disoriented hair and bristle polarity and subsequent work has now demonstrated its importance in critical and diverse aspects of biology. Since those early discoveries, Dishevelled has been shown to coordinate a plethora of developmental and cellular processes that range from controlling cell polarity during gastrulation to partnering with chromatin modifying enzymes to regulate histone methylation at genomic loci. While the role of DVL in development is well-respected and the cytosolic function of DVL has been studied more extensively, its nuclear role continues to remain murky. In this review we highlight some of the seminal discoveries that have contributed to the field, but the primary focus is to discuss recent advances with respect to the nuclear role of Dishevelled. This nuclear function of Dishevelled is a dimension which is proving to be increasingly important yet remains enigmatic.
Collapse
Affiliation(s)
- Geetha Priya Boligala
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Mingxiao V Yang
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Jenna C van Wunnik
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Kevin Pruitt
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA.
| |
Collapse
|
3
|
Dock10 Regulates Cardiac Function under Neurohormonal Stress. Int J Mol Sci 2022; 23:ijms23179616. [PMID: 36077014 PMCID: PMC9455810 DOI: 10.3390/ijms23179616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 11/18/2022] Open
Abstract
Dedicator of cytokinesis 10 (Dock10) is a guanine nucleotide exchange factor for Cdc42 and Rac1 that regulates the JNK (c-Jun N-terminal kinase) and p38 MAPK (mitogen-activated protein kinase) signaling cascades. In this study, we characterized the roles of Dock10 in the myocardium. In vitro: we ablated Dock10 in neonatal mouse floxed Dock10 cardiomyocytes (NMCMs) and cardiofibroblasts (NMCFs) by transduction with an adenovirus expressing Cre-recombinase. In vivo, we studied mice in which the Dock10 gene was constitutively and globally deleted (Dock10 KO) and mice with cardiac myocyte-specific Dock10 KO (Dock10 CKO) at baseline and in response to two weeks of Angiotensin II (Ang II) infusion. In vitro, Dock10 ablation differentially inhibited the α-adrenergic stimulation of p38 and JNK in NMCM and NMCF, respectively. In vivo, the stimulation of both signaling pathways was markedly attenuated in the heart. The Dock10 KO mice had normal body weight and cardiac size. However, echocardiography revealed mildly reduced systolic function, and IonOptix recordings demonstrated reduced contractility and elevated diastolic calcium levels in isolated cardiomyocytes. Remarkably, Dock10 KO, but not Dock10 CKO, exaggerated the pathological response to Ang II infusion. These data suggest that Dock10 regulates cardiac stress-related signaling. Although Dock10 can regulate MAPK signaling in both cardiomyocytes and cardiofibroblasts, the inhibition of pathological cardiac remodeling is not apparently due to the Dock10 signaling in the cardiomyocyte.
Collapse
|
4
|
Role of puerarin in pathological cardiac remodeling: A review. Pharmacol Res 2022; 178:106152. [DOI: 10.1016/j.phrs.2022.106152] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 02/28/2022] [Accepted: 03/01/2022] [Indexed: 12/22/2022]
|
5
|
Sutton SS, Magagnoli J, Cummings TH, Hardin JW. Targeting Rac1 for the prevention of atherosclerosis among U.S. Veterans with inflammatory bowel disease. Small GTPases 2022; 13:205-210. [PMID: 34320903 PMCID: PMC9707539 DOI: 10.1080/21541248.2021.1954863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Evidence suggests that Ras-related C3 botulinum toxin substrate 1 (Rac1) might be a target in atherosclerotic disease (AD). We hypothesize that due to their ability to inhibit Rac1, thiopurines are associated with a lower risk of AD. We fit a time-dependent cox proportional hazards model estimating the hazard of AD among a national cohort of US veterans with inflammatory bowel disease. Patients exposed to thiopurines had a 7.5% lower risk of AD (HR = 0.925; 95% CI = (0.87-0.984)) compared to controls. The propensity score weighted analysis reveals thiopurine exposure reduces the risk of AD by 6.6% (HR = 0.934; 95% CI = (0.896-0.975)), compared to controls. Further exploration and evaluation of Rac1 inhibition as a target for AD is warranted.
Collapse
Affiliation(s)
- S. Scott Sutton
- Dorn Research Institute, Columbia VA Health Care System, Columbia, SC, USA,Department of Clinical Pharmacy and Outcomes Sciences, College of Pharmacy, University of South Carolina, Columbia, SC, USA
| | - Joseph Magagnoli
- Dorn Research Institute, Columbia VA Health Care System, Columbia, SC, USA,Department of Clinical Pharmacy and Outcomes Sciences, College of Pharmacy, University of South Carolina, Columbia, SC, USA,CONTACT Joseph Magagnoli Dorn Research Institute, Columbia VA Health Care System, Columbia, SC, USA
| | - Tammy H. Cummings
- Dorn Research Institute, Columbia VA Health Care System, Columbia, SC, USA,Department of Clinical Pharmacy and Outcomes Sciences, College of Pharmacy, University of South Carolina, Columbia, SC, USA
| | - James W. Hardin
- Dorn Research Institute, Columbia VA Health Care System, Columbia, SC, USA,Department of Epidemiology & Biostatistics, University of South Carolina, Columbia, SC, USA
| |
Collapse
|
6
|
Colón-Bolea P, García-Gómez R, Casar B. RAC1 Activation as a Potential Therapeutic Option in Metastatic Cutaneous Melanoma. Biomolecules 2021; 11:1554. [PMID: 34827551 PMCID: PMC8615836 DOI: 10.3390/biom11111554] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/14/2021] [Accepted: 10/15/2021] [Indexed: 12/21/2022] Open
Abstract
Metastasis is a complex process by which cancer cells escape from the primary tumor to colonize distant organs. RAC1 is a member of the RHO family of small guanosine triphosphatases that plays an important role in cancer migration, invasion, angiogenesis and metastasis. RAC1 activation has been related to most cancers, such as cutaneous melanoma, breast, lung, and pancreatic cancer. RAC1P29S driver mutation appears in a significant number of cutaneous melanoma cases. Likewise, RAC1 is overexpressed or hyperactivated via signaling through oncogenic cell surface receptors. Thus, targeting RAC1 represents a promising strategy for cutaneous melanoma therapy, as well as for inhibition of other signaling activation that promotes resistance to targeted therapies. In this review, we focus on the role of RAC1 in metastatic cutaneous melanoma emphasizing the anti-metastatic potential of RAC1- targeting drugs.
Collapse
Affiliation(s)
- Paula Colón-Bolea
- Instituto de Biomedicina y Biotecnología de Cantabria, Consejo Superior de Investigaciones Científicas—Universidad de Cantabria, 39011 Santander, Spain; (P.C.-B.); (R.G.-G.)
| | - Rocío García-Gómez
- Instituto de Biomedicina y Biotecnología de Cantabria, Consejo Superior de Investigaciones Científicas—Universidad de Cantabria, 39011 Santander, Spain; (P.C.-B.); (R.G.-G.)
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Berta Casar
- Instituto de Biomedicina y Biotecnología de Cantabria, Consejo Superior de Investigaciones Científicas—Universidad de Cantabria, 39011 Santander, Spain; (P.C.-B.); (R.G.-G.)
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain
| |
Collapse
|
7
|
Zhang F, Liu Y, You Q, Yang E, Liu B, Wang H, Xu S, Nawaz W, Chen D, Wu Z. NSC23766 and Ehop016 Suppress Herpes Simplex Virus-1 Replication by Inhibiting Rac1 Activity. Biol Pharm Bull 2021; 44:1263-1271. [PMID: 34162786 DOI: 10.1248/bpb.b21-00054] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Herpes simplex virus-1 (HSV-1) infection of the eyes leads to herpes simplex virus keratitis (HSK), the main cause of infectious blindness in the world. As the current therapeutics for HSV-1 infection are rather limited and prolonged use of acyclovir (ACV)/ganciclovir (GCV) and in immunocompromised patients lead to the rise of drug resistant mutants, it underlines the urgent need for new antiviral agents with distinct mechanisms. Our study attempted to establish ras-related C3 botulinum toxin substrate 1 (Rac1) as a new therapeutic target for HSV-1 infection by using Rac1-specific inhibitors to evaluate the in vitro inhibition of virus growth. Our results showed that increased Rac1 activity facilitated HSV-1 replication and inhibition of Rac1 activity by NSC23766 and Ehop016 significantly reduced HSV-1 replication. Thus, we identified NSC23766 and Ehop016 as possessing potent anti-HSV-1 activities by suppressing the Rac1 activity, suggesting that Rac1 is a potential target for treating HSV-1-related diseases.
Collapse
Affiliation(s)
- Fang Zhang
- Center for Public Health Research, Medical School of Nanjing University.,Department of Burns and Plastic Surgery, Nanjing Drum Tower Hospital, Medical School of Nanjing University
| | - Ye Liu
- Center for Public Health Research, Medical School of Nanjing University.,Department of Ophthalmology, JinLing Hospital, Medical School of Nanjing University
| | - Qiao You
- Center for Public Health Research, Medical School of Nanjing University
| | - Enhui Yang
- Nanjing Children's Hospital, Nanjing Medical University
| | - Bingxin Liu
- Center for Public Health Research, Medical School of Nanjing University
| | - Huanru Wang
- Center for Public Health Research, Medical School of Nanjing University
| | - Shijie Xu
- Center for Public Health Research, Medical School of Nanjing University
| | - Waqas Nawaz
- Center for Public Health Research, Medical School of Nanjing University.,Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University
| | - Deyan Chen
- Center for Public Health Research, Medical School of Nanjing University
| | - Zhiwei Wu
- Center for Public Health Research, Medical School of Nanjing University.,Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University.,School of Life Sciences, Ningxia University
| |
Collapse
|
8
|
Sharma M, Pruitt K. Wnt Pathway: An Integral Hub for Developmental and Oncogenic Signaling Networks. Int J Mol Sci 2020; 21:E8018. [PMID: 33126517 PMCID: PMC7663720 DOI: 10.3390/ijms21218018] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 10/25/2020] [Accepted: 10/26/2020] [Indexed: 12/18/2022] Open
Abstract
The Wnt pathway is an integral cell-to-cell signaling hub which regulates crucial development processes and maintenance of tissue homeostasis by coordinating cell proliferation, differentiation, cell polarity, cell movement, and stem cell renewal. When dysregulated, it is associated with various developmental diseases, fibrosis, and tumorigenesis. We now better appreciate the complexity and crosstalk of the Wnt pathway with other signaling cascades. Emerging roles of the Wnt signaling in the cancer stem cell niche and drug resistance have led to development of therapeutics specifically targeting various Wnt components, with some agents currently in clinical trials. This review highlights historical and recent findings on key mediators of Wnt signaling and how they impact antitumor immunity and maintenance of cancer stem cells. This review also examines current therapeutics being developed that modulate Wnt signaling in cancer and discusses potential shortcomings associated with available therapeutics.
Collapse
Affiliation(s)
| | - Kevin Pruitt
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA;
| |
Collapse
|
9
|
Kho M, Smith JA, Verweij N, Shang L, Ryan KA, Zhao W, Ware EB, Gansevoort RT, Irvin MR, Lee JE, Turner ST, Sung J, van der Harst P, Arnett DK, Baylin A, Park SK, Seo YA, Kelly KM, Chang YPC, Zhou X, Lieske JC, Kardia SLR. Genome-Wide Association Meta-Analysis of Individuals of European Ancestry Identifies Suggestive Loci for Sodium Intake, Potassium Intake, and Their Ratio Measured from 24-Hour or Half-Day Urine Samples. J Nutr 2020; 150:2635-2645. [PMID: 32840624 PMCID: PMC7549298 DOI: 10.1093/jn/nxaa241] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 05/19/2020] [Accepted: 07/17/2020] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Excess sodium intake and insufficient potassium intake are risk factors for hypertension, but there is limited knowledge regarding genetic factors that influence intake. Twenty-hour or half-day urine samples provide robust estimates of sodium and potassium intake, outperforming other measures such as spot urine samples and dietary self-reporting. OBJECTIVE The aim of this study was to investigate genomic regions associated with sodium intake, potassium intake, and sodium-to-potassium ratio measured from 24-h or half-day urine samples. METHODS Using samples of European ancestry (mean age: 54.2 y; 52.3% women), we conducted a meta-analysis of genome-wide association studies in 4 cohorts with 24-h or half-day urine samples (n = 6,519), followed by gene-based analysis. Suggestive loci (P < 10-6) were examined in additional European (n = 844), African (n = 1,246), and Asian (n = 2,475) ancestry samples. RESULTS We found suggestive loci (P < 10-6) for all 3 traits, including 7 for 24-h sodium excretion, 4 for 24-h potassium excretion, and 4 for sodium-to-potassium ratio. The most significant locus was rs77958157 near cocaine- and amphetamine-regulated transcript prepropeptide (CARTPT) , a gene involved in eating behavior and appetite regulation (P = 2.3 × 10-8 with sodium-to-potassium ratio). Two suggestive loci were replicated in additional samples: for sodium excretion, rs12094702 near zinc finger SWIM-type containing 5 (ZSWIM5) was replicated in the Asian ancestry sample reaching Bonferroni-corrected significance (P = 0.007), and for potassium excretion rs34473523 near sodium leak channel (NALCN) was associated at a nominal P value with potassium excretion both in European (P = 0.043) and African (P = 0.043) ancestry cohorts. Gene-based tests identified 1 significant gene for sodium excretion, CDC42 small effector 1 (CDC42SE1), which is associated with blood pressure regulation. CONCLUSIONS We identified multiple suggestive loci for sodium and potassium intake near genes associated with eating behavior, nervous system development and function, and blood pressure regulation in individuals of European ancestry. Further research is needed to replicate these findings and to provide insight into the underlying genetic mechanisms by which these genomic regions influence sodium and potassium intake.
Collapse
Affiliation(s)
| | - Jennifer A Smith
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA,Survey Research Center, Institute for Social Research, University of Michigan, Ann Arbor, MI, USA
| | - Niek Verweij
- Department of Cardiology, Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Lulu Shang
- Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Kathleen A Ryan
- Department of Medicine, School of Medicine, University of Maryland Baltimore, Baltimore, MD, USA
| | - Wei Zhao
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Erin B Ware
- Survey Research Center, Institute for Social Research, University of Michigan, Ann Arbor, MI, USA
| | - Ron T Gansevoort
- Department of Nephrology, Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Marguerite R Irvin
- Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Jung Eun Lee
- Department of Food and Nutrition, Seoul National University, Seoul, Republic of Korea
| | - Stephen T Turner
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | - Joohon Sung
- Department of Epidemiology, School of Public Health, Seoul National University, Seoul, Republic of Korea,Institute of Environment and Health, Seoul National University, Seoul, Republic of Korea
| | - Pim van der Harst
- Department of Cardiology, Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Donna K Arnett
- College of Public Health, University of Kentucky, Lexington, KY, USA
| | - Ana Baylin
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA,Department of Nutritional Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Sung Kyun Park
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA,Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Young Ah Seo
- Department of Nutritional Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Kristen M Kelly
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Yen Pei C Chang
- Department of Medicine, School of Medicine, University of Maryland Baltimore, Baltimore, MD, USA
| | - Xiang Zhou
- Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - John C Lieske
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Sharon L R Kardia
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| |
Collapse
|
10
|
Maldonado MDM, Medina JI, Velazquez L, Dharmawardhane S. Targeting Rac and Cdc42 GEFs in Metastatic Cancer. Front Cell Dev Biol 2020; 8:201. [PMID: 32322580 PMCID: PMC7156542 DOI: 10.3389/fcell.2020.00201] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 03/09/2020] [Indexed: 12/20/2022] Open
Abstract
The Rho family GTPases Rho, Rac, and Cdc42 have emerged as key players in cancer metastasis, due to their essential roles in regulating cell division and actin cytoskeletal rearrangements; and thus, cell growth, migration/invasion, polarity, and adhesion. This review will focus on the close homologs Rac and Cdc42, which have been established as drivers of metastasis and therapy resistance in multiple cancer types. Rac and Cdc42 are often dysregulated in cancer due to hyperactivation by guanine nucleotide exchange factors (GEFs), belonging to both the diffuse B-cell lymphoma (Dbl) and dedicator of cytokinesis (DOCK) families. Rac/Cdc42 GEFs are activated by a myriad of oncogenic cell surface receptors, such as growth factor receptors, G-protein coupled receptors, cytokine receptors, and integrins; consequently, a number of Rac/Cdc42 GEFs have been implicated in metastatic cancer. Hence, inhibiting GEF-mediated Rac/Cdc42 activation represents a promising strategy for targeted metastatic cancer therapy. Herein, we focus on the role of oncogenic Rac/Cdc42 GEFs and discuss the recent advancements in the development of Rac and Cdc42 GEF-interacting inhibitors as targeted therapy for metastatic cancer, as well as their potential for overcoming cancer therapy resistance.
Collapse
Affiliation(s)
- Maria Del Mar Maldonado
- Department of Biochemistry, School of Medicine, University of Puerto Rico Medical Sciences Campus, San Juan, Puerto Rico
| | - Julia Isabel Medina
- Department of Biochemistry, School of Medicine, University of Puerto Rico Medical Sciences Campus, San Juan, Puerto Rico
| | - Luis Velazquez
- Department of Biochemistry, School of Medicine, University of Puerto Rico Medical Sciences Campus, San Juan, Puerto Rico
| | - Suranganie Dharmawardhane
- Department of Biochemistry, School of Medicine, University of Puerto Rico Medical Sciences Campus, San Juan, Puerto Rico
| |
Collapse
|
11
|
Coordination between Rac1 and Rab Proteins: Functional Implications in Health and Disease. Cells 2019; 8:cells8050396. [PMID: 31035701 PMCID: PMC6562727 DOI: 10.3390/cells8050396] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 04/25/2019] [Accepted: 04/26/2019] [Indexed: 02/07/2023] Open
Abstract
The small GTPases of the Rho family regulate many aspects of actin dynamics, but are functionally connected to many other cellular processes. Rac1, a member of this family, besides its known function in the regulation of actin cytoskeleton, plays a key role in the production of reactive oxygen species, in gene transcription, in DNA repair, and also has been proven to have specific roles in neurons. This review focuses on the cooperation between Rac1 and Rab proteins, analyzing how the coordination between these GTPases impact on cells and how alterations of their functions lead to disease.
Collapse
|
12
|
Chen G, Pan SF, Cui XL, Liu LH. Puerarin attenuates angiotensin II-induced cardiac fibroblast proliferation via the promotion of catalase activity and the inhibition of hydrogen peroxide-dependent Rac-1 activation. Chin J Nat Med 2018; 16:41-52. [PMID: 29425589 DOI: 10.1016/s1875-5364(18)30028-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Indexed: 12/09/2022]
Abstract
The aims of the present study were to evaluate the effects of puerarin on angiotensin II-induced cardiac fibroblast proliferation and to explore the molecular mechanisms of action. Considering the role of H2O2 in nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activation, we hypothesized that modulating catalase activity would be a potential target in regulating the redox-sensitive pathways. Our results showed that the activation of Rac1 was dependent on the levels of intracellular H2O2. Puerarin blocked the phosphorylation of extracellular regulated protein kinases (ERK)1/2, abolished activator protein (AP)-1 binding activity, and eventually attenuated cardiac fibroblast proliferation through the inhibition of H2O2-dependent Rac1 activation. Further studies revealed that angiotensin II treatment resulted in decreased catalase protein expression and enzyme activity, which was disrupted by puerarin via the upregulation of catalase protein expression at the transcriptional level and the prolonged protein degradation. These findings indicated that the anti-proliferation mechanism of puerarin was mainly through blocking angiontensin II-triggered downregulation of catalase expression and H2O2-dependent Rac1 activation.
Collapse
Affiliation(s)
- Gang Chen
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Shi-Fen Pan
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Xiang-Li Cui
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Li-Hong Liu
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China.
| |
Collapse
|
13
|
Maldonado MDM, Dharmawardhane S. Targeting Rac and Cdc42 GTPases in Cancer. Cancer Res 2018; 78:3101-3111. [PMID: 29858187 PMCID: PMC6004249 DOI: 10.1158/0008-5472.can-18-0619] [Citation(s) in RCA: 169] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 03/20/2018] [Accepted: 04/06/2018] [Indexed: 02/07/2023]
Abstract
Rac and Cdc42 are small GTPases that have been linked to multiple human cancers and are implicated in epithelial to mesenchymal transition, cell-cycle progression, migration/invasion, tumor growth, angiogenesis, and oncogenic transformation. With the exception of the P29S driver mutation in melanoma, Rac and Cdc42 are not generally mutated in cancer, but are overexpressed (gene amplification and mRNA upregulation) or hyperactivated. Rac and Cdc42 are hyperactivated via signaling through oncogenic cell surface receptors, such as growth factor receptors, which converge on the guanine nucleotide exchange factors that regulate their GDP/GTP exchange. Hence, targeting Rac and Cdc42 represents a promising strategy for precise cancer therapy, as well as for inhibition of bypass signaling that promotes resistance to cell surface receptor-targeted therapies. Therefore, an understanding of the regulatory mechanisms of these pivotal signaling intermediates is key for the development of effective inhibitors. In this review, we focus on the role of Rac and Cdc42 in cancer and summarize the regulatory mechanisms, inhibitory efficacy, and the anticancer potential of Rac- and Cdc42-targeting agents. Cancer Res; 78(12); 3101-11. ©2018 AACR.
Collapse
Affiliation(s)
- María Del Mar Maldonado
- Department of Biochemistry, School of Medicine, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico
| | - Suranganie Dharmawardhane
- Department of Biochemistry, School of Medicine, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico.
| |
Collapse
|
14
|
Maffucci I, Hu X, Fumagalli V, Contini A. An Efficient Implementation of the Nwat-MMGBSA Method to Rescore Docking Results in Medium-Throughput Virtual Screenings. Front Chem 2018; 6:43. [PMID: 29556494 PMCID: PMC5844977 DOI: 10.3389/fchem.2018.00043] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 02/19/2018] [Indexed: 01/05/2023] Open
Abstract
Nwat-MMGBSA is a variant of MM-PB/GBSA based on the inclusion of a number of explicit water molecules that are the closest to the ligand in each frame of a molecular dynamics trajectory. This method demonstrated improved correlations between calculated and experimental binding energies in both protein-protein interactions and ligand-receptor complexes, in comparison to the standard MM-GBSA. A protocol optimization, aimed to maximize efficacy and efficiency, is discussed here considering penicillopepsin, HIV1-protease, and BCL-XL as test cases. Calculations were performed in triplicates on both classic HPC environments and on standard workstations equipped by a GPU card, evidencing no statistical differences in the results. No relevant differences in correlation to experiments were also observed when performing Nwat-MMGBSA calculations on 4 or 1 ns long trajectories. A fully automatic workflow for structure-based virtual screening, performing from library set-up to docking and Nwat-MMGBSA rescoring, has then been developed. The protocol has been tested against no rescoring or standard MM-GBSA rescoring within a retrospective virtual screening of inhibitors of AmpC β-lactamase and of the Rac1-Tiam1 protein-protein interaction. In both cases, Nwat-MMGBSA rescoring provided a statistically significant increase in the ROC AUCs of between 20 and 30%, compared to docking scoring or to standard MM-GBSA rescoring.
Collapse
Affiliation(s)
- Irene Maffucci
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Generale e Organica "Alessandro Marchesini," Università degli Studi di Milano, Milan, Italy
| | - Xiao Hu
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Generale e Organica "Alessandro Marchesini," Università degli Studi di Milano, Milan, Italy
| | - Valentina Fumagalli
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Generale e Organica "Alessandro Marchesini," Università degli Studi di Milano, Milan, Italy
| | - Alessandro Contini
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Generale e Organica "Alessandro Marchesini," Università degli Studi di Milano, Milan, Italy
| |
Collapse
|
15
|
Contini A, Ferri N, Bucci R, Lupo MG, Erba E, Gelmi ML, Pellegrino S. Peptide modulators of Rac1/Tiam1 protein-protein interaction: An alternative approach for cardiovascular diseases. Biopolymers 2017; 110. [PMID: 29178143 DOI: 10.1002/bip.23089] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 10/25/2017] [Accepted: 10/30/2017] [Indexed: 01/01/2023]
Abstract
Rac1 GTPase interaction with guanine nucleotide exchange factor Tiam1 is involved in several cancer types and cardiovascular diseases. Although small molecules interfering with their protein-protein interaction (PPI) were identified and studied, the ability of small peptides and peptide mimics acting as Rac1/Tiam1 PPI inhibitors has not been yet explored. Using computational alanine scanning (CAS), the "hot" interfacial residues have been determined allowing the design of a small library of putative PPI inhibitors. In particular, the insertion of an unnatural alpha, alpha disubstituted amino acid, that is norbornane amino acid, and the side chain stapling have been evaluated regarding both conformational stability and biological activity. REMD calculations and CD studies have indicated that one single norbornane amino acid at the N-terminus is not sufficient to stabilize the helix structure, while the side-chain stapling is a more efficient strategy. Furthermore, both engineered peptides have been found able to reduce Rac1-GTP levels in cultured human smooth muscle cells, while wild type sequence is not active.
Collapse
Affiliation(s)
- Alessandro Contini
- Department of Pharmaceutical Sciences, University of Milano, Milano, Italy
| | - Nicola Ferri
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padua, Italy
| | - Raffaella Bucci
- Department of Pharmaceutical Sciences, University of Milano, Milano, Italy
| | - Maria Giovanna Lupo
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padua, Italy
| | - Emanuela Erba
- Department of Pharmaceutical Sciences, University of Milano, Milano, Italy
| | - Maria Luisa Gelmi
- Department of Pharmaceutical Sciences, University of Milano, Milano, Italy
| | - Sara Pellegrino
- Department of Pharmaceutical Sciences, University of Milano, Milano, Italy
| |
Collapse
|
16
|
Marei H, Malliri A. Rac1 in human diseases: The therapeutic potential of targeting Rac1 signaling regulatory mechanisms. Small GTPases 2017; 8:139-163. [PMID: 27442895 PMCID: PMC5584733 DOI: 10.1080/21541248.2016.1211398] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Revised: 07/05/2016] [Accepted: 07/05/2016] [Indexed: 12/11/2022] Open
Abstract
Abnormal Rac1 signaling is linked to a number of debilitating human diseases, including cancer, cardiovascular diseases and neurodegenerative disorders. As such, Rac1 represents an attractive therapeutic target, yet the search for effective Rac1 inhibitors is still underway. Given the adverse effects associated with Rac1 signaling perturbation, cells have evolved several mechanisms to ensure the tight regulation of Rac1 signaling. Thus, characterizing these mechanisms can provide invaluable information regarding major cellular events that lead to aberrant Rac1 signaling. Importantly, this information can be utilized to further facilitate the development of effective pharmacological modulators that can restore normal Rac1 signaling. In this review, we focus on the pathological role of Rac1 signaling, highlighting the benefits and potential drawbacks of targeting Rac1 in a clinical setting. Additionally, we provide an overview of available compounds that target key Rac1 regulatory mechanisms and discuss future therapeutic avenues arising from our understanding of these mechanisms.
Collapse
Affiliation(s)
- Hadir Marei
- Cell Signaling Group, Cancer Research UK Manchester Institute, The University of Manchester, Manchester, UK
| | - Angeliki Malliri
- Cell Signaling Group, Cancer Research UK Manchester Institute, The University of Manchester, Manchester, UK
| |
Collapse
|
17
|
Ferri N, Marchianò S, Lupo MG, Trenti A, Biondo G, Castaldello P, Corsini A. Geranylgeraniol prevents the simvastatin-induced PCSK9 expression: Role of the small G protein Rac1. Pharmacol Res 2017; 122:96-104. [PMID: 28554582 DOI: 10.1016/j.phrs.2017.05.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 04/27/2017] [Accepted: 05/23/2017] [Indexed: 12/18/2022]
Abstract
Statins are known to increase the plasma levels of proprotein convertase subtilisin kexin type 9 (PCSK9) through the activation of the sterol responsive element binding protein (SREBP) pathway due to the inhibition of cholesterol biosynthesis. In the present study, we explore a possible role of the prenylated proteins on the statin-mediated PCSK9 induction in Caco-2 cells. Simvastatin (40μM) induced both PCSK9 mRNA (10.7±3.2 fold) and protein (2.2±0.3 fold), after 24h incubation. The induction of PCSK9 mRNA was partially, but significantly, prevented by the co-incubation with mevalonate (MVA), farnesol (FOH) and geranylgeraniol (GGOH), while a complete prevention was observed on secreted PCSK9, evaluated by ELISA assay. Under the same experimental conditions, MVA, GGOH, but not FOH, prevented the activation of the PCSK9 promoter by simvastatin in a SRE-dependent manner. Simvastatin reduced by -35.7±15.2% the Rac1-GTP levels, while no changes were observed on RhoA- and Cdc42-GTP. This effect was prevented by MVA and GGOH. A Rac inhibitor, and N17Rac1 dominant negative mutant, significantly induced PCSK9 levels, and a suppression of Rac1 expression by siRNA, counteract the effect of simvastatin on the induction of PCSK9 mRNA. Finally, simvastatin, and Rac inhibitor inhibited the nuclear translocation of STAT3 and its knock-down by siRNA increased significantly the susceptibility of Caco-2 to simvastatin on PCSK9 expression. Taken together, the present study reveal a direct role of Rac1 on simvastatin-mediated PCSK9 expression via the reduction of STAT3 nuclear translocation.
Collapse
Affiliation(s)
- Nicola Ferri
- Dipartimento di Scienze del Farmaco, Università degli Studi di Padova, Padua, Italy.
| | - Silvia Marchianò
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - Maria Giovanna Lupo
- Dipartimento di Scienze del Farmaco, Università degli Studi di Padova, Padua, Italy
| | - Annalisa Trenti
- Dipartimento di Scienze del Farmaco, Università degli Studi di Padova, Padua, Italy
| | - Giuseppe Biondo
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - Paola Castaldello
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - Alberto Corsini
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy; Multimedica IRCCS, Milan, Italy
| |
Collapse
|
18
|
Sáenz‐Narciso B, Gómez‐Orte E, Zheleva A, Gastaca I, Cabello J. Control of developmental networks by Rac/Rho small GTPases: How cytoskeletal changes during embryogenesis are orchestrated. Bioessays 2016; 38:1246-1254. [PMID: 27790724 PMCID: PMC5132145 DOI: 10.1002/bies.201600165] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Small GTPases in the Rho family act as major nodes with functions beyond cytoskeletal rearrangements shaping the Caenorhabditis elegans embryo during development. These small GTPases are key signal transducers that integrate diverse developmental signals to produce a coordinated response in the cell. In C. elegans, the best studied members of these highly conserved Rho family small GTPases, RHO-1/RhoA, CED-10/Rac, and CDC-42, are crucial in several cellular processes dealing with cytoskeletal reorganization. In this review, we update the functions described for the Rho family small GTPases in spindle orientation and cell division, engulfment, and cellular movements during C. elegans embryogenesis, focusing on the Rho subfamily Rac. Please also see the video abstract here.
Collapse
Affiliation(s)
| | - Eva Gómez‐Orte
- Center for Biomedical Research of La Rioja (CIBIR)LogroñoSpain
| | | | - Irene Gastaca
- Center for Biomedical Research of La Rioja (CIBIR)LogroñoSpain
| | - Juan Cabello
- Center for Biomedical Research of La Rioja (CIBIR)LogroñoSpain
| |
Collapse
|
19
|
Catalán Ú, Rubió L, López de las Hazas MC, Herrero P, Nadal P, Canela N, Pedret A, Motilva MJ, Solà R. Hydroxytyrosol and its complex forms (secoiridoids) modulate aorta and heart proteome in healthy rats: Potential cardio-protective effects. Mol Nutr Food Res 2016; 60:2114-2129. [DOI: 10.1002/mnfr.201600052] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 04/07/2016] [Accepted: 04/13/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Úrsula Catalán
- Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC-Salut), Unit of Lipids and Atherosclerosis Research (URLA), Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Hospital Universitari Sant Joan, IISPV, Technological Center of Nutrition and Health (CTNS), Faculty of Medicine and Health Sciences; Universitat Rovira i Virgili; Sant Llorenç Reus Spain
| | - Laura Rubió
- Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC-Salut), Unit of Lipids and Atherosclerosis Research (URLA), Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Hospital Universitari Sant Joan, IISPV, Technological Center of Nutrition and Health (CTNS), Faculty of Medicine and Health Sciences; Universitat Rovira i Virgili; Sant Llorenç Reus Spain
- Food Technology Department; Universitat de Lleida-AGROTECNIO Center; Lleida Spain
| | | | - Pol Herrero
- Centre for Omic Sciences; Universitat Rovira i Virgili (COS-URV); Reus Spain
| | - Pedro Nadal
- Centre for Omic Sciences; Universitat Rovira i Virgili (COS-URV); Reus Spain
| | - Núria Canela
- Centre for Omic Sciences; Universitat Rovira i Virgili (COS-URV); Reus Spain
| | - Anna Pedret
- Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC-Salut), Unit of Lipids and Atherosclerosis Research (URLA), Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Hospital Universitari Sant Joan, IISPV, Technological Center of Nutrition and Health (CTNS), Faculty of Medicine and Health Sciences; Universitat Rovira i Virgili; Sant Llorenç Reus Spain
| | - Maria-José Motilva
- Food Technology Department; Universitat de Lleida-AGROTECNIO Center; Lleida Spain
| | - Rosa Solà
- Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC-Salut), Unit of Lipids and Atherosclerosis Research (URLA), Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Hospital Universitari Sant Joan, IISPV, Technological Center of Nutrition and Health (CTNS), Faculty of Medicine and Health Sciences; Universitat Rovira i Virgili; Sant Llorenç Reus Spain
| |
Collapse
|
20
|
Ricci C, Ferri N. Naturally occurring PDGF receptor inhibitors with potential anti-atherosclerotic properties. Vascul Pharmacol 2015; 70:1-7. [DOI: 10.1016/j.vph.2015.02.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 02/18/2015] [Accepted: 02/20/2015] [Indexed: 01/03/2023]
|
21
|
Marinković G, Heemskerk N, van Buul JD, de Waard V. The Ins and Outs of Small GTPase Rac1 in the Vasculature. J Pharmacol Exp Ther 2015; 354:91-102. [PMID: 26036474 DOI: 10.1124/jpet.115.223610] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 06/01/2015] [Indexed: 12/16/2022] Open
Abstract
The Rho family of small GTPases forms a 20-member family within the Ras superfamily of GTP-dependent enzymes that are activated by a variety of extracellular signals. The most well known Rho family members are RhoA (Ras homolog gene family, member A), Cdc42 (cell division control protein 42), and Rac1 (Ras-related C3 botulinum toxin substrate 1), which affect intracellular signaling pathways that regulate a plethora of critical cellular functions, such as oxidative stress, cellular contacts, migration, and proliferation. In this review, we describe the current knowledge on the role of GTPase Rac1 in the vasculature. Whereas most recent reviews focus on the role of vascular Rac1 in endothelial cells, in the present review we also highlight the functional involvement of Rac1 in other vascular cells types, namely, smooth muscle cells present in the media and fibroblasts located in the adventitia of the vessel wall. Collectively, this overview shows that Rac1 activity is involved in various functions within one cell type at distinct locations within the cell, and that there are overlapping but also cell type-specific functions in the vasculature. Chronically enhanced Rac1 activity seems to contribute to vascular pathology; however, Rac1 is essential to vascular homeostasis, which makes Rac1 inhibition as a therapeutic option a delicate balancing act.
Collapse
Affiliation(s)
- Goran Marinković
- Department Medical Biochemistry (G.M., V.d.W.) and Department of Molecular Cell Biology (N.H., J.D.v.B.), Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Niels Heemskerk
- Department Medical Biochemistry (G.M., V.d.W.) and Department of Molecular Cell Biology (N.H., J.D.v.B.), Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Jaap D van Buul
- Department Medical Biochemistry (G.M., V.d.W.) and Department of Molecular Cell Biology (N.H., J.D.v.B.), Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Vivian de Waard
- Department Medical Biochemistry (G.M., V.d.W.) and Department of Molecular Cell Biology (N.H., J.D.v.B.), Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| |
Collapse
|
22
|
Rac1 modification by an electrophilic 15-deoxy Δ(12,14)-prostaglandin J2 analog. Redox Biol 2015; 4:346-54. [PMID: 25677088 PMCID: PMC4326178 DOI: 10.1016/j.redox.2015.01.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 01/29/2015] [Accepted: 01/30/2015] [Indexed: 11/24/2022] Open
Abstract
Vascular endothelial cells (ECs) are important for maintaining vascular homeostasis. Dysfunction of ECs contributes to cardiovascular diseases, including atherosclerosis, and can impair the healing process during vascular injury. An important mediator of EC response to stress is the GTPase Rac1. Rac1 responds to extracellular signals and is involved in cytoskeletal rearrangement, reactive oxygen species generation and cell cycle progression. Rac1 interacts with effector proteins to elicit EC spreading and formation of cell-to-cell junctions. Rac1 activity has recently been shown to be modulated by glutathiolation or S-nitrosation via an active site cysteine residue. However, it is not known whether other redox signaling compounds can modulate Rac1 activity. An important redox signaling mediator is the electrophilic lipid, 15-deoxy-Δ12,14-prostaglandin J2 (15d-PGJ2). This compound is a downstream product of cyclooxygenase and forms covalent adducts with specific cysteine residues, and induces cellular signaling in a pleiotropic manner. In this study, we demonstrate that a biotin-tagged analog of 15d-PGJ2 (bt-15d-PGJ2) forms an adduct with Rac1 in vitro at the C157 residue, and an additional adduct was detected on the tryptic peptide associated with C178. Rac1 modification in addition to modulation of Rac1 activity by bt-15d-PGJ2 was observed in cultured ECs. In addition, decreased EC migration and cell spreading were observed in response to the electrophile. These results demonstrate for the first time that Rac1 is a target for 15d-PGJ2 in ECs, and suggest that Rac1 modification by electrophiles such as 15d-PGJ2 may alter redox signaling and EC function. • Recombinant Rac1 is modified by bt-15d-PGJ2 at C157 in vitro. • Rac1 is modified by bt-15d-PGJ2 in bovine aortic endothelial cells. • Rac1 activity is transiently stimulated by bt-15d-PGJ2. • 15d-PGJ2 inhibits endothelial cell migration and spreading.
Collapse
|
23
|
Ferri N, Panariti F, Ricci C, Maiocchi G, Corsini A. Aliskiren inhibits prorenin-induced human aortic smooth muscle cell migration. J Renin Angiotensin Aldosterone Syst 2014; 16:284-91. [PMID: 25070349 DOI: 10.1177/1470320314528364] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND In the present study, we investigated the potential effect of aliskiren on smooth muscle cell (SMC) migration in response to prorenin. METHODS Cultured human SMCs were incubated with angiotensinogen (ANG) (1.5 × 10(-7)M) and increasing concentrations of aliskiren (10(-6)-10(-5)M). After 24 h, SMC migration was assessed by Boyden's chamber chemotactic assay using prorenin as chemotactic factor (10(-8)M). The effect of aliskiren on RhoA and Rac activity was also determined by G-LISA assay and the lamellipodia formation by rhodamine-phalloidin staining. Changes in cell morphology were recorded in real-time using the iCelligence system. RESULTS Aliskiren determined, at 10(-5)M, a significant inhibition of SMC migration induced by prorenin (-66.4 ± 18.1%; p < 0.05), while no significant effect was observed when PDGF-BB was utilized as chemotactic agent. Aliskiren also reduced Rac-GTP levels in response to prorenin (-54.2 ± 5.4%) without affecting the RhoA-GTP levels. Finally, aliskiren inhibited both the lamellipodia formation and morphological changes induced by prorenin with no significant effect on PDGF-BB activity. CONCLUSIONS Taken together, we provide the first evidence of the inhibitory action of aliskiren on SMC migration induced by prorenin.
Collapse
Affiliation(s)
- Nicola Ferri
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - Federica Panariti
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - Chiara Ricci
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | | | - Alberto Corsini
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| |
Collapse
|
24
|
Schultz ML, Tecedor L, Stein CS, Stamnes MA, Davidson BL. CLN3 deficient cells display defects in the ARF1-Cdc42 pathway and actin-dependent events. PLoS One 2014; 9:e96647. [PMID: 24792215 PMCID: PMC4008583 DOI: 10.1371/journal.pone.0096647] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 04/09/2014] [Indexed: 01/08/2023] Open
Abstract
Juvenile Batten disease (juvenile neuronal ceroid lipofuscinosis, JNCL) is a devastating neurodegenerative disease caused by mutations in CLN3, a protein of undefined function. Cell lines derived from patients or mice with CLN3 deficiency have impairments in actin-regulated processes such as endocytosis, autophagy, vesicular trafficking, and cell migration. Here we demonstrate the small GTPase Cdc42 is misregulated in the absence of CLN3, and thus may be a common link to multiple cellular defects. We discover that active Cdc42 (Cdc42-GTP) is elevated in endothelial cells from CLN3 deficient mouse brain, and correlates with enhanced PAK-1 phosphorylation, LIMK membrane recruitment, and altered actin-driven events. We also demonstrate dramatically reduced plasma membrane recruitment of the Cdc42 GTPase activating protein, ARHGAP21. In line with this, GTP-loaded ARF1, an effector of ARHGAP21 recruitment, is depressed. Together these data implicate misregulated ARF1-Cdc42 signaling as a central defect in JNCL cells, which in-turn impairs various cell functions. Furthermore our findings support concerted action of ARF1, ARHGAP21, and Cdc42 to regulate fluid phase endocytosis in mammalian cells. The ARF1-Cdc42 pathway presents a promising new avenue for JNCL therapeutic development.
Collapse
Affiliation(s)
- Mark L. Schultz
- Program of Molecular and Cellular Biology, University of Iowa, Iowa City, Iowa, United States of America
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, United States of America
| | - Luis Tecedor
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, United States of America
| | - Colleen S. Stein
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, United States of America
| | - Mark A. Stamnes
- Department of Molecular Physiology and Biophysics, Iowa City, Iowa, United States of America
| | - Beverly L. Davidson
- Program of Molecular and Cellular Biology, University of Iowa, Iowa City, Iowa, United States of America
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, United States of America
- Department of Molecular Physiology and Biophysics, Iowa City, Iowa, United States of America
- Department of Neurology, Iowa City, Iowa, United States of America
- * E-mail:
| |
Collapse
|
25
|
Ruffoni A, Ferri N, Bernini SK, Ricci C, Corsini A, Maffucci I, Clerici F, Contini A. 2-Amino-3-(phenylsulfanyl)norbornane-2-carboxylate: An Appealing Scaffold for the Design of Rac1–Tiam1 Protein–Protein Interaction Inhibitors. J Med Chem 2014; 57:2953-62. [DOI: 10.1021/jm401924s] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Alessandro Ruffoni
- Dipartimento
di Scienze Farmaceutiche—Sezione di Chimica Generale e Organica
“Alessandro Marchesini”, Università degli Studi di Milano, Via Venezian 21, 20133 Milano, Italy
| | - Nicola Ferri
- Dipartimento
di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Via Balzaretti 9, 20133 Milano, Italy
- Multimedica IRCCS, Milan, Italy
| | - Sergio K. Bernini
- Dipartimento
di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Via Balzaretti 9, 20133 Milano, Italy
| | - Chiara Ricci
- Dipartimento
di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Via Balzaretti 9, 20133 Milano, Italy
| | - Alberto Corsini
- Dipartimento
di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Via Balzaretti 9, 20133 Milano, Italy
| | - Irene Maffucci
- Dipartimento
di Scienze Farmaceutiche—Sezione di Chimica Generale e Organica
“Alessandro Marchesini”, Università degli Studi di Milano, Via Venezian 21, 20133 Milano, Italy
| | - Francesca Clerici
- Dipartimento
di Scienze Farmaceutiche—Sezione di Chimica Generale e Organica
“Alessandro Marchesini”, Università degli Studi di Milano, Via Venezian 21, 20133 Milano, Italy
| | - Alessandro Contini
- Dipartimento
di Scienze Farmaceutiche—Sezione di Chimica Generale e Organica
“Alessandro Marchesini”, Università degli Studi di Milano, Via Venezian 21, 20133 Milano, Italy
| |
Collapse
|