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Lei S, Meng Q, Liu Y, Liu Q, Dai A, Cai X, Wang MW, Zhou Q, Zhou H, Yang D. Distinct roles of the extracellular surface residues of glucagon-like peptide-1 receptor in β-arrestin 1/2 signaling. Eur J Pharmacol 2024; 968:176419. [PMID: 38360293 DOI: 10.1016/j.ejphar.2024.176419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 02/06/2024] [Accepted: 02/12/2024] [Indexed: 02/17/2024]
Abstract
Glucagon-like peptide-1 receptor (GLP-1R) is a prime drug target for type 2 diabetes and obesity. The ligand initiated GLP-1R interaction with G protein has been well studied, but not with β-arrestin 1/2. Therefore, bioluminescence resonance energy transfer (BRET), mutagenesis and an operational model were used to evaluate the roles of 85 extracellular surface residues on GLP-1R in β-arrestin 1/2 recruitment triggered by three representative GLP-1R agonists (GLP-1, exendin-4 and oxyntomodulin). Residues selectively regulated β-arrestin 1/2 recruitment for diverse ligands, and β-arrestin isoforms were identified. Mutation of residues K130-S136, L142 and Y145 on the transmembrane helix 1 (TM1)-extracellular domain (ECD) linker decreased β-arrestin 1 recruitment but increased β-arrestin 2 recruitment. Other extracellular loop (ECL) mutations, including P137A, Q211A, D222A and M303A selectively affected β-arrestin 1 recruitment while D215A, L217A, Q221A, S223A, Y289A, S301A, F381A and I382A involved more in β-arrestin 2 recruitment for the ligands. Oxyntomodulin engaged more broadly with GLP-1R extracellular surface to drive β-arrestin 1/2 recruitment than GLP-1 and exendin-4; I147, W214 and L218 involved in β-arrestin 1 recruitment, while L141, D215, L218, D293 and F381 in β-arrestin 2 recruitment for oxyntomodulin particularly. Additionally, the non-conserved residues on β-arrestin 1/2 C-domains contributed to interaction with GLP-1R. Further proteomic profiling of GLP-1R stably expressed cell line upon ligand stimulation with or without β-arrestin 1/2 overexpression demonstrated both commonly and biasedly regulated proteins and pathways associated with cognate ligands and β-arrestins. Our study offers valuable information about ligand induced β-arrestin recruitment mediated by GLP-1R and consequent intracellular signaling events.
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Affiliation(s)
- Saifei Lei
- The National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China; School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
| | - Qian Meng
- State Key Laboratory of Chemical Biology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Yanyun Liu
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Qiaofeng Liu
- School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Antao Dai
- The National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Xiaoqing Cai
- The National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Ming-Wei Wang
- Department of Pharmacology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China; Research Center for Deepsea Bioresources, Sanya, Hainan, 572025, China; Department of Chemistry, School of Science, The University of Tokyo, Tokyo, 113-0033, Japan; School of Pharmacy, Hainan Medical University, Haikou, 570228, China
| | - Qingtong Zhou
- Department of Pharmacology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China; Research Center for Deepsea Bioresources, Sanya, Hainan, 572025, China.
| | - Hu Zhou
- State Key Laboratory of Chemical Biology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
| | - Dehua Yang
- The National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China; State Key Laboratory of Chemical Biology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China; School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, 210023, China; Research Center for Deepsea Bioresources, Sanya, Hainan, 572025, China.
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McNeill SM, Lu J, Marion C Carino C, Inoue A, Zhao P, Sexton PM, Wootten D. The role of G protein-coupled receptor kinases in GLP-1R β-arrestin recruitment and internalisation. Biochem Pharmacol 2024; 222:116119. [PMID: 38461904 DOI: 10.1016/j.bcp.2024.116119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 01/11/2024] [Accepted: 03/07/2024] [Indexed: 03/12/2024]
Abstract
The glucagon-like peptide 1 receptor (GLP-1R) is a validated clinical target for the treatment of type 2 diabetes and obesity. Unlike most G protein-coupled receptors (GPCRs), the GLP-1R undergoes an atypical mode of internalisation that does not require β-arrestins. While differences in GLP-1R trafficking and β-arrestin recruitment have been observed between clinically used GLP-1R agonists, the role of G protein-coupled receptor kinases (GRKs) in affecting these pathways has not been comprehensively assessed. In this study, we quantified the contribution of GRKs to agonist-mediated GLP-1R internalisation and β-arrestin recruitment profiles using cells where endogenous β-arrestins, or non-visual GRKs were knocked out using CRISPR/Cas9 genome editing. Our results confirm the previously established atypical β-arrestin-independent mode of GLP-1R internalisation and revealed that GLP-1R internalisation is dependent on the expression of GRKs. Interestingly, agonist-mediated GLP-1R β-arrestin 1 and β-arrestin 2 recruitment were differentially affected by endogenous GRK knockout with β-arrestin 1 recruitment more sensitive to GRK knockout than β-arrestin 2 recruitment. Moreover, individual overexpression of GRK2, GRK3, GRK5 or GRK6 in a newly generated GRK2/3/4/5/6 HEK293 cells, rescued agonist-mediated β-arrestin 1 recruitment and internalisation profiles to similar levels, suggesting that there is no specific GRK isoform that drives these pathways. This study advances mechanistic understanding of agonist-mediated GLP-1R internalisation and provides novel insights into how GRKs may fine-tune GLP-1R signalling.
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Affiliation(s)
- Samantha M McNeill
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Melbourne, Victoria 3052, Australia
| | - Jessica Lu
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Melbourne, Victoria 3052, Australia; ARC Centre for Cryo-Electron Microscopy of Membrane Proteins (CCeMMP), Monash Institute of Pharmaceutical Sciences, Monash University, Parkville 3052, Australia
| | - Carlo Marion C Carino
- Graduate School of Pharmaceutical Sciences, Tokohu University, Sendai, Miyagi 980-8578, Japan
| | - Asuka Inoue
- Graduate School of Pharmaceutical Sciences, Tokohu University, Sendai, Miyagi 980-8578, Japan
| | - Peishen Zhao
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Melbourne, Victoria 3052, Australia; ARC Centre for Cryo-Electron Microscopy of Membrane Proteins (CCeMMP), Monash Institute of Pharmaceutical Sciences, Monash University, Parkville 3052, Australia
| | - Patrick M Sexton
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Melbourne, Victoria 3052, Australia; ARC Centre for Cryo-Electron Microscopy of Membrane Proteins (CCeMMP), Monash Institute of Pharmaceutical Sciences, Monash University, Parkville 3052, Australia.
| | - Denise Wootten
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Melbourne, Victoria 3052, Australia; ARC Centre for Cryo-Electron Microscopy of Membrane Proteins (CCeMMP), Monash Institute of Pharmaceutical Sciences, Monash University, Parkville 3052, Australia.
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Mathieu NM, Nakagawa P, Grobe JL, Sigmund CD. Insights Into the Role of Angiotensin-II AT 1 Receptor-Dependent β-Arrestin Signaling in Cardiovascular Disease. Hypertension 2024; 81:6-16. [PMID: 37449411 PMCID: PMC10787814 DOI: 10.1161/hypertensionaha.123.19419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
β-arrestins are a family of intracellular signaling proteins that play a key role in regulating the activity of G protein-coupled receptors. The angiotensin-II type 1 receptor is an important G protein-coupled receptor involved in the regulation of cardiovascular function and has been implicated in the progression of cardiovascular diseases. In addition to canonical G protein signaling, G protein-coupled receptors including the angiotensin-II type 1 receptor can signal via β-arrestin. Dysregulation of β-arrestin signaling has been linked to several cardiovascular diseases including hypertension, atherosclerosis, and heart failure. Understanding the role of β-arrestins in these conditions is critical to provide new therapeutic targets for the treatment of cardiovascular disease. In this review, we will discuss the beneficial and maladaptive physiological outcomes of angiotensin-II type 1 receptor-dependent β-arrestin activation in different cardiovascular diseases.
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Affiliation(s)
| | - Pablo Nakagawa
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI
| | - Justin L. Grobe
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI
- Comprehensive Rodent Metabolic Phenotyping Core, Medical College of Wisconsin, Milwaukee, WI
- Department of Biomedical Engineering, Medical College of Wisconsin, Milwaukee, WI
| | - Curt D. Sigmund
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI
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Burghi V, Paradis JS, Officer A, Adame-Garcia SR, Wu X, Matthees ESF, Barsi-Rhyne B, Ramms DJ, Clubb L, Acosta M, Tamayo P, Bouvier M, Inoue A, von Zastrow M, Hoffmann C, Gutkind JS. Gαs is dispensable for β-arrestin coupling but dictates GRK selectivity and is predominant for gene expression regulation by β2-adrenergic receptor. J Biol Chem 2023; 299:105293. [PMID: 37774973 PMCID: PMC10641165 DOI: 10.1016/j.jbc.2023.105293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 09/03/2023] [Accepted: 09/14/2023] [Indexed: 10/01/2023] Open
Abstract
β-arrestins play a key role in G protein-coupled receptor (GPCR) internalization, trafficking, and signaling. Whether β-arrestins act independently of G protein-mediated signaling has not been fully elucidated. Studies using genome-editing approaches revealed that whereas G proteins are essential for mitogen-activated protein kinase activation by GPCRs., β-arrestins play a more prominent role in signal compartmentalization. However, in the absence of G proteins, GPCRs may not activate β-arrestins, thereby limiting the ability to distinguish G protein from β-arrestin-mediated signaling events. We used β2-adrenergic receptor (β2AR) and its β2AR-C tail mutant expressed in human embryonic kidney 293 cells wildtype or CRISPR-Cas9 gene edited for Gαs, β-arrestin1/2, or GPCR kinases 2/3/5/6 in combination with arrestin conformational sensors to elucidate the interplay between Gαs and β-arrestins in controlling gene expression. We found that Gαs is not required for β2AR and β-arrestin conformational changes, β-arrestin recruitment, and receptor internalization, but that Gαs dictates the GPCR kinase isoforms involved in β-arrestin recruitment. By RNA-Seq analysis, we found that protein kinase A and mitogen-activated protein kinase gene signatures were activated by stimulation of β2AR in wildtype and β-arrestin1/2-KO cells but absent in Gαs-KO cells. These results were validated by re-expressing Gαs in the corresponding KO cells and silencing β-arrestins in wildtype cells. These findings were extended to cellular systems expressing endogenous levels of β2AR. Overall, our results support that Gs is essential for β2AR-promoted protein kinase A and mitogen-activated protein kinase gene expression signatures, whereas β-arrestins initiate signaling events modulating Gαs-driven nuclear transcriptional activity.
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Affiliation(s)
- Valeria Burghi
- Moores Cancer Center, University of California San Diego, La Jolla, California, USA; Department of Pharmacology, University of California San Diego, La Jolla, California, USA
| | - Justine S Paradis
- Moores Cancer Center, University of California San Diego, La Jolla, California, USA; Department of Pharmacology, University of California San Diego, La Jolla, California, USA
| | - Adam Officer
- Moores Cancer Center, University of California San Diego, La Jolla, California, USA; Department of Pharmacology, University of California San Diego, La Jolla, California, USA
| | - Sendi Rafael Adame-Garcia
- Moores Cancer Center, University of California San Diego, La Jolla, California, USA; Department of Pharmacology, University of California San Diego, La Jolla, California, USA
| | - Xingyu Wu
- Moores Cancer Center, University of California San Diego, La Jolla, California, USA; Department of Pharmacology, University of California San Diego, La Jolla, California, USA
| | - Edda S F Matthees
- Institut für Molekulare Zellbiologie, CMB - Center for Molecular Biomedicine, Universitätsklinikum Jena, Friedrich-Schiller-Universität Jena, Jena, Germany
| | - Benjamin Barsi-Rhyne
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California, USA
| | - Dana J Ramms
- Moores Cancer Center, University of California San Diego, La Jolla, California, USA; Department of Pharmacology, University of California San Diego, La Jolla, California, USA
| | - Lauren Clubb
- Moores Cancer Center, University of California San Diego, La Jolla, California, USA; Department of Pharmacology, University of California San Diego, La Jolla, California, USA
| | - Monica Acosta
- Moores Cancer Center, University of California San Diego, La Jolla, California, USA; Department of Pharmacology, University of California San Diego, La Jolla, California, USA
| | - Pablo Tamayo
- Moores Cancer Center, University of California San Diego, La Jolla, California, USA
| | - Michel Bouvier
- Department of Biochemistry and Molecular Medicine, Institute for Research in Immunology and Cancer, Université de Montréal, Québec, Canada
| | - Asuka Inoue
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Mark von Zastrow
- Department of Psychiatry and Department of Cellular and Molecular Pharmacology, University of California San Francisco, San Francisco, California, USA
| | - Carsten Hoffmann
- Institut für Molekulare Zellbiologie, CMB - Center for Molecular Biomedicine, Universitätsklinikum Jena, Friedrich-Schiller-Universität Jena, Jena, Germany
| | - J Silvio Gutkind
- Moores Cancer Center, University of California San Diego, La Jolla, California, USA; Department of Pharmacology, University of California San Diego, La Jolla, California, USA.
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Kim JY, Shin JH, Kim MJ, Kang Y, Lee JS, Son J, Jeong SK, Kim D, Kim DH, Chun E, Lee KY. β-arrestin 2 negatively regulates lung cancer progression by inhibiting the TRAF6 signaling axis for NF-κB activation and autophagy induced by TLR3 and TLR4. Cell Death Dis 2023; 14:422. [PMID: 37443143 PMCID: PMC10344878 DOI: 10.1038/s41419-023-05945-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 06/20/2023] [Accepted: 07/03/2023] [Indexed: 07/15/2023]
Abstract
β-arrestin 2 (ARRB2) is functionally implicated in cancer progression via various signaling pathways. However, its role in lung cancer remains unclear. To obtain clinical insight on its function in lung cancer, microarray data from lung tumor tissues (LTTs) and matched lung normal tissues (mLNTs) of primary non-small cell lung cancer (NSCLC) patients (n = 37) were utilized. ARRB2 expression levels were markedly decreased in all 37 LTTs compared to those in matched LNTs of NSCLC patients. They were significantly co-related to enrichment gene sets associated with oncogenic and cancer genes. Importantly, Gene Set Enrichment Analysis (GSEA) between three LTTs with highly down-regulated ARRB2 and three LTTs with lowly down-regulated ARRB2 revealed significant enrichments related to toll-like receptor (TLR) signaling and autophagy genes in three LTTs with highly down-regulated ARRB2, suggesting that ARRB2 was negatively involved in TLR-mediated signals for autophagy induction in lung cancer. Biochemical studies for elucidating the molecular mechanism revealed that ARRB2 interacted with TNF receptor-associated factor 6 (TRAF6) and Beclin 1 (BECN1), thereby inhibiting the ubiquitination of TRAF6-TAB2 to activate NF-κB and TRAF6-BECN1 for autophagy stimulated by TLR3 and TLR4, suggesting that ARRB2 could inhibit the TRAF6-TAB2 signaling axis for NF-κB activation and TRAF6-BECN1 signaling axis for autophagy in response to TLR3 and TLR4. Notably, ARRB2-knockout (ARRB2KO) lung cancer cells exhibited marked enhancements of cancer migration, invasion, colony formation, and proliferation in response to TLR3 and TLR4 stimulation. Altogether, our current data suggest that ARRB2 can negatively regulate lung cancer progression by inhibiting TLR3- and TLR4-induced autophagy.
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Affiliation(s)
- Ji Young Kim
- Department of Immunology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea
| | - Ji Hye Shin
- Department of Immunology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea
| | - Mi-Jeong Kim
- Department of Immunology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea
| | - Yeeun Kang
- Department of Immunology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea
| | - Ji Su Lee
- Department of Immunology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea
| | - Juhee Son
- Department of Immunology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea
| | - Soo-Kyung Jeong
- R&D Center, CHA Vaccine Institute, Seongnam-si, 13493, Republic of Korea
| | - Daesik Kim
- Department of Precision Medicine, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea
| | - Duk-Hwan Kim
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea
| | - Eunyoung Chun
- R&D Center, CHA Vaccine Institute, Seongnam-si, 13493, Republic of Korea.
| | - Ki-Young Lee
- Department of Immunology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea.
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology, Samsung Medical Center, Sungkyunkwan University, Seoul, 06351, Republic of Korea.
- Single Cell Network Research Center, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea.
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Ren H, Liu Y, Tan Z, Luo G, Zhang M, Li S, Tang T, Zhao L. A Common Variant of ARRB2 Promoter Region Associated with the Prognosis of Heart Failure. Hum Hered 2023; 88:68-78. [PMID: 37100034 DOI: 10.1159/000530827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 04/14/2023] [Indexed: 04/28/2023] Open
Abstract
INTRODUCTION The role of ARRB2 in cardiovascular disease has recently gained increasing attention. However, the association between ARRB2 polymorphisms and heart failure (HF) has not yet been investigated. METHODS A total of 2,386 hospitalized patients with chronic HF were enrolled as the first cohort and followed up for a mean period of 20.2 months. Meanwhile, ethnically and geographically matched 3,000 individuals without evidence of HF were included as healthy controls. We genotyped the common variant in ARRB2 gene to identify the association between variant and HF. A replicated independent cohort enrolling 837 patients with chronic HF was applied to validate the observed association. A series of function analyses were conducted to illuminate the underlying mechanism. RESULTS We identified a common variant rs75428611 associated with the prognosis of HF in two-stage population: adjusted p = 0.001, hazard ratio (HR) = 1.31 (1.11-1.54) in additive model and adjusted p = 0.001, HR = 1.39 (1.14-1.69) in dominant model in first-stage population; adjusted p = 0.04, HR = 1.41 (1.02-1.95) in additive model and adjusted p = 0.03, HR = 1.51 (1.03-2.20) in dominant model in replicated stage. However, rs75428611 did not significantly associate with the risk of HF. Functional analysis indicated that rs75428611-G allele increased the promoter activity and the mRNA expression level of ARRB2 by facilitating transcription factor SRF binding but not the A allele. CONCLUSIONS Our findings demonstrated that rs75428611 in promoter of ARRB2 was associated with the risk of HF mortality. It is a promising potential treatment target for HF.
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Affiliation(s)
- Hongqiang Ren
- Cardiovascular Center, Suining Central Hospital, Suining, China,
| | - Yijun Liu
- Cardiovascular Center, Suining Central Hospital, Suining, China
| | - Zhen Tan
- Cardiovascular Center, Suining Central Hospital, Suining, China
| | - Guiquan Luo
- Cardiovascular Center, Suining Central Hospital, Suining, China
| | - Mei Zhang
- Cardiovascular Center, Suining Central Hospital, Suining, China
| | - Shuang Li
- Cardiovascular Center, Suining Central Hospital, Suining, China
| | - Tingwei Tang
- Cardiovascular Center, Suining Central Hospital, Suining, China
| | - Li Zhao
- Cardiovascular Center, Suining Central Hospital, Suining, China
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Piscura MK, Sepulveda DE, Maulik M, Guindon J, Henderson-Redmond AN, Morgan DJ. Cannabinoid Tolerance in S426A/S430A x β-Arrestin 2 Knockout Double-Mutant Mice. J Pharmacol Exp Ther 2023; 385:17-34. [PMID: 36669876 PMCID: PMC10029824 DOI: 10.1124/jpet.122.001367] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 01/03/2023] [Accepted: 01/10/2023] [Indexed: 01/22/2023] Open
Abstract
Tolerance to compounds that target G protein-coupled receptors (GPCRs), such as the cannabinoid type-1 receptor (CB1R), is in part facilitated by receptor desensitization. Processes that mediate CB1R desensitization include phosphorylation of CB1R residues S426 and S430 by a GPCR kinase and subsequent recruitment of the β-arrestin2 scaffolding protein. Tolerance to cannabinoid drugs is reduced in S426A/S430A mutant mice and β-arrestin2 knockout (KO) mice according to previous work in vivo. However, the presence of additional phosphorylatable residues on the CB1R C-terminus made it unclear as to whether recruitment to S426 and S430 accounted for all desensitization and tolerance by β-arrestin2. Therefore, we assessed acute response and tolerance to the cannabinoids delta-9-tetrahydrocannabinol (Δ9-THC) and CP55,940 in S426A/S430A x β-arrestin2 KO double-mutant mice. We observed both delayed tolerance and increased sensitivity to the antinociceptive and hypothermic effects of CP55,940 in male S426A/S430A single- and double-mutant mice compared with wild-type littermates, but not with Δ9-THC. Female S426A/S430A single- and double-mutant mice were more sensitive to acute antinociception (CP55,940 and Δ9-THC) and hypothermia (CP55,940 only) exclusively after chronic dosing and did not differ in the development of tolerance. These results indicate that phosphorylation of S426 and S430 are likely responsible for β-arrestin2-mediated desensitization as double-mutant mice did not differ from the S426A/S430A single-mutant model in respect to cannabinoid tolerance and sensitivity. We also found antinociceptive and hypothermic effects from cannabinoid treatment demonstrated by sex-, agonist-, and duration-dependent features. SIGNIFICANCE STATEMENT: A better understanding of the molecular mechanisms involved in tolerance will improve the therapeutic potential of cannabinoid drugs. This study determined that further deletion of β-arrestin2 does not enhance the delay in cannabinoid tolerance observed in CB1R S426A/S430A mutant mice.
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Affiliation(s)
- Mary K Piscura
- Department of Biomedical Sciences, Marshall University, Huntington, West Virginia (M.K.P., M.M., A.N.H.-R., D.J.M.); Department of Pharmacology (D.E.S.) and Graduate Program in Anatomy (M.K.P.), Penn State University College of Medicine, Hershey, Pennsylvania; and Department of Pharmacology and Neuroscience (J.G.) and Center of Excellence for Translational Neuroscience and Therapeutics (J.G.), Texas Tech University Health Sciences Center, Lubbock, Texas
| | - Diana E Sepulveda
- Department of Biomedical Sciences, Marshall University, Huntington, West Virginia (M.K.P., M.M., A.N.H.-R., D.J.M.); Department of Pharmacology (D.E.S.) and Graduate Program in Anatomy (M.K.P.), Penn State University College of Medicine, Hershey, Pennsylvania; and Department of Pharmacology and Neuroscience (J.G.) and Center of Excellence for Translational Neuroscience and Therapeutics (J.G.), Texas Tech University Health Sciences Center, Lubbock, Texas
| | - Malabika Maulik
- Department of Biomedical Sciences, Marshall University, Huntington, West Virginia (M.K.P., M.M., A.N.H.-R., D.J.M.); Department of Pharmacology (D.E.S.) and Graduate Program in Anatomy (M.K.P.), Penn State University College of Medicine, Hershey, Pennsylvania; and Department of Pharmacology and Neuroscience (J.G.) and Center of Excellence for Translational Neuroscience and Therapeutics (J.G.), Texas Tech University Health Sciences Center, Lubbock, Texas
| | - Josée Guindon
- Department of Biomedical Sciences, Marshall University, Huntington, West Virginia (M.K.P., M.M., A.N.H.-R., D.J.M.); Department of Pharmacology (D.E.S.) and Graduate Program in Anatomy (M.K.P.), Penn State University College of Medicine, Hershey, Pennsylvania; and Department of Pharmacology and Neuroscience (J.G.) and Center of Excellence for Translational Neuroscience and Therapeutics (J.G.), Texas Tech University Health Sciences Center, Lubbock, Texas
| | - Angela N Henderson-Redmond
- Department of Biomedical Sciences, Marshall University, Huntington, West Virginia (M.K.P., M.M., A.N.H.-R., D.J.M.); Department of Pharmacology (D.E.S.) and Graduate Program in Anatomy (M.K.P.), Penn State University College of Medicine, Hershey, Pennsylvania; and Department of Pharmacology and Neuroscience (J.G.) and Center of Excellence for Translational Neuroscience and Therapeutics (J.G.), Texas Tech University Health Sciences Center, Lubbock, Texas
| | - Daniel J Morgan
- Department of Biomedical Sciences, Marshall University, Huntington, West Virginia (M.K.P., M.M., A.N.H.-R., D.J.M.); Department of Pharmacology (D.E.S.) and Graduate Program in Anatomy (M.K.P.), Penn State University College of Medicine, Hershey, Pennsylvania; and Department of Pharmacology and Neuroscience (J.G.) and Center of Excellence for Translational Neuroscience and Therapeutics (J.G.), Texas Tech University Health Sciences Center, Lubbock, Texas
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Roy S, Alkanfari I, Chaki S, Ali H. Role of MrgprB2 in Rosacea-Like Inflammation in Mice: Modulation by β-Arrestin 2. J Invest Dermatol 2022; 142:2988-2997.e3. [PMID: 35644498 PMCID: PMC9634617 DOI: 10.1016/j.jid.2022.05.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 04/27/2022] [Accepted: 05/06/2022] [Indexed: 02/04/2023]
Abstract
Cathelicidin LL-37‒mediated activation of mast cells (MCs) has been implicated in the pathogenesis of rosacea, but the receptor involved and the mechanism of its activation and regulation remain unknown. We found that skin biopsies from patients with rosacea display higher frequencies of MCs expressing MRGPRX2 (mouse counterpart MrgprB2) than normal skin. Intradermal injection of LL-37 in wild-type mice resulted in MC recruitment, expression of inflammatory mediators, and development of rosacea-like inflammation. These responses were substantially reduced in MrgprB2‒/‒ mice and abolished in MC deficient Wsh/Wsh mice. β-arrestin 2 is an adaptor protein that regulates G protein-coupled receptor function by receptor desensitization and also by activation of downstream signaling. We found that LL-37‒induced rosacea-like inflammation was significantly reduced in mice with MC-specific deletion of β-arrestin 2 compared with that in control mice. Interestingly, the absence of β-arrestin 2 resulted in enhanced cofilin phosphorylation and substantial inhibition of LL-37‒induced chemotaxis of mouse peritoneal MCs. Furthermore, LL-37‒induced extracellular signal‒regulated kinase 1/2 phosphorylation, NF-κB activation, and proinflammatory cytokine/chemokine production were reduced in β-arrestin 2‒/‒ peritoneal MCs compared with those in wild-type cells. These findings suggest that MRGPRX2/B2 participates in rosacea and that β-arrestin 2 contributes to its pathogenesis by promoting cofilin dephosphorylation, extracellular signal‒regulated kinase 1/2 and NF-κB phosphorylation, MC chemotaxis, and chemokine/cytokine generation.
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Affiliation(s)
- Saptarshi Roy
- Department of Basic & Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Ibrahim Alkanfari
- Department of Basic & Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Shaswati Chaki
- Department of Basic & Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Hydar Ali
- Department of Basic & Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
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9
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Mathieu NM, Nakagawa P, Grobe CC, Reho JJ, Brozoski DT, Lu KT, Wackman KK, Ritter ML, Segar JL, Grobe JL, Sigmund CD. ARRB2 (β-Arrestin-2) Deficiency Alters Fluid Homeostasis and Blood Pressure Regulation. Hypertension 2022; 79:2480-2492. [PMID: 36215165 PMCID: PMC9669141 DOI: 10.1161/hypertensionaha.122.19863] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 08/04/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND GPCRs (G protein-coupled receptors) are implicated in blood pressure (BP) and fluid intake regulation. There is a developing concept that these effects are mediated by both canonical G protein signaling and noncanonical β-arrestin mediated signaling, but the contributions of each remain largely unexplored. Here, we hypothesized that β-arrestin contributes to fluid homeostasis and blood pressure (BP) regulation in deoxycorticosterone acetate (DOCA) salt hypertension, a prototypical model of salt-sensitive hypertension. METHODS Global β-arrestin1 (Arrb1) and β-arrestin2 (Arrb2) knockout mice were employed to evaluate drinking behavior, and BP was evaluated in Arrb2-knockout mice. Age- and sex-matched C57BL/6 mice served as controls. We measured intake of water and different sodium chloride solutions and BP employing a 2-bottle choice paradigm with and without DOCA. RESULTS Without DOCA (baseline), Arrb2-knockout mice exhibited a significant elevation in saline intake with no change in water intake. With DOCA treatment, Arrb2-knockout mice exhibited a significant increase in both saline and water intake. Although Arrb2-knockout mice exhibited hypernatremia at baseline conditions, we did not find significant changes in total body sodium stores or sodium palatability. In a separate cohort, BP was measured via telemetry in Arrb2-knockout and C57BL/6 mice with and without DOCA. Arrb2-knockout did not exhibit significant differences in BP before DOCA treatment when provided water alone, or when provided a choice of water and saline. However, Arrb2-knockout exhibited an increased pressor response to DOCA-salt. CONCLUSIONS These findings suggest that in salt-sensitive hypertension, ARRB2, but not ARRB1 (β-arrestin 1), might counterbalance the canonical signaling of GPCRs.
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Affiliation(s)
- Natalia M Mathieu
- Department of Physiology, Cardiovascular Center (N.M.M., P.N., J.J.R., D.T.B., K.-T.L., K.K.W., M.L.R., J.L.S., J.L.G., C.D.S.), Medical College of Wisconsin, Milwaukee, WI
| | - Pablo Nakagawa
- Department of Physiology, Cardiovascular Center (N.M.M., P.N., J.J.R., D.T.B., K.-T.L., K.K.W., M.L.R., J.L.S., J.L.G., C.D.S.), Medical College of Wisconsin, Milwaukee, WI
- Cardiovascular Center (P.N., J.L.S., J.L.G., C.D.S.), Medical College of Wisconsin, Milwaukee, WI
| | - Connie C Grobe
- Department of Pediatrics (C.C.G., J.L.S.), Medical College of Wisconsin, Milwaukee, WI
| | - John J Reho
- Department of Physiology, Cardiovascular Center (N.M.M., P.N., J.J.R., D.T.B., K.-T.L., K.K.W., M.L.R., J.L.S., J.L.G., C.D.S.), Medical College of Wisconsin, Milwaukee, WI
- Comprehensive Rodent Metabolic Phenotyping Core (J.J.R., J.L.G.), Medical College of Wisconsin, Milwaukee, WI
| | - Daniel T Brozoski
- Department of Physiology, Cardiovascular Center (N.M.M., P.N., J.J.R., D.T.B., K.-T.L., K.K.W., M.L.R., J.L.S., J.L.G., C.D.S.), Medical College of Wisconsin, Milwaukee, WI
| | - Ko-Ting Lu
- Department of Physiology, Cardiovascular Center (N.M.M., P.N., J.J.R., D.T.B., K.-T.L., K.K.W., M.L.R., J.L.S., J.L.G., C.D.S.), Medical College of Wisconsin, Milwaukee, WI
| | - Kelsey K Wackman
- Department of Physiology, Cardiovascular Center (N.M.M., P.N., J.J.R., D.T.B., K.-T.L., K.K.W., M.L.R., J.L.S., J.L.G., C.D.S.), Medical College of Wisconsin, Milwaukee, WI
| | - McKenzie L Ritter
- Department of Physiology, Cardiovascular Center (N.M.M., P.N., J.J.R., D.T.B., K.-T.L., K.K.W., M.L.R., J.L.S., J.L.G., C.D.S.), Medical College of Wisconsin, Milwaukee, WI
| | - Jeffrey L Segar
- Department of Physiology, Cardiovascular Center (N.M.M., P.N., J.J.R., D.T.B., K.-T.L., K.K.W., M.L.R., J.L.S., J.L.G., C.D.S.), Medical College of Wisconsin, Milwaukee, WI
- Cardiovascular Center (P.N., J.L.S., J.L.G., C.D.S.), Medical College of Wisconsin, Milwaukee, WI
- Department of Pediatrics (C.C.G., J.L.S.), Medical College of Wisconsin, Milwaukee, WI
| | - Justin L Grobe
- Department of Physiology, Cardiovascular Center (N.M.M., P.N., J.J.R., D.T.B., K.-T.L., K.K.W., M.L.R., J.L.S., J.L.G., C.D.S.), Medical College of Wisconsin, Milwaukee, WI
- Cardiovascular Center (P.N., J.L.S., J.L.G., C.D.S.), Medical College of Wisconsin, Milwaukee, WI
- Comprehensive Rodent Metabolic Phenotyping Core (J.J.R., J.L.G.), Medical College of Wisconsin, Milwaukee, WI
- Department of Biomedical Engineering (J.L.G.), Medical College of Wisconsin, Milwaukee, WI
| | - Curt D Sigmund
- Department of Physiology, Cardiovascular Center (N.M.M., P.N., J.J.R., D.T.B., K.-T.L., K.K.W., M.L.R., J.L.S., J.L.G., C.D.S.), Medical College of Wisconsin, Milwaukee, WI
- Cardiovascular Center (P.N., J.L.S., J.L.G., C.D.S.), Medical College of Wisconsin, Milwaukee, WI
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10
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Liu YX, Yuan S, Liu XJ, Huang YX, Qiu P, Gao J, Deng GP. LncRNA GATA3-AS1 promoted invasion and migration in human endometrial carcinoma by regulating the miR-361/ARRB2 axis. J Mol Med (Berl) 2022; 100:1271-1286. [PMID: 35788718 DOI: 10.1007/s00109-022-02222-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 11/25/2022]
Abstract
Endometrial carcinoma (EC) is a kind of fatal female malignancy. lncRNA GATA3-AS1 has been identified as an oncogene in various cancers. However, the functions and mechanisms of GATA3-AS1 in EC remain to be explored. Human EC tissues and four EC cell lines were used. Western blotting and quantitative real-time PCR (qRT-PCR) were used to evaluate the expression of GATA3-AS1, miR-361, and ARRB2. Dual-luciferase reporter and RNA immunoprecipitation (RIP) assays were used to validate the interaction among GATA3-AS1, miR-361, and ARRB2. Flow cytometry, colony formation assay, scratch assay, and transwell assay were used to examine the cell apoptosis, proliferation, migration, and invasion of EC cells, respectively. In vivo tumor growth was monitored in nude mice. GATA3-AS1 and ARRB2 were upregulated while miR-361 was downregulated in human EC tissues and EC cells. GATA3-AS1 knockdown constrained cell proliferation, invasion, migration, and EMT while promoting the apoptosis of EC cells by upregulating miR-361. GATA3-AS1 negatively regulated miR-361 expression. ARRB2 was the direct target of miR-361 and could activate the Src/Akt pathway. In vivo, GATA3-AS1 knockdown suppressed tumor progression by upregulating the miR-361 expression. lncRNA GATA3-AS1 promoted EC invasion and migration by the miR-361/ARRB2 axis, which indicated that GATA3-AS1 might be a promising therapeutic option for advanced EC progression. KEY MESSAGES: GATA3-AS1 knockdown suppressed EC proliferation, invasion, and migration. GATA3-AS1 directly inhibited miR-361 as a ceRNA. MiR-361 knockdown reversed the tumor suppressive effect caused by GATA3-AS1 knockdown. MiR-361 bound to ARRB2 directly and suppressed its expression. The GATA3-AS1/miR-361/ARRB2 axis regulated EC cell proliferation, invasion, and migration.
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Affiliation(s)
- Yu-Xi Liu
- Department of Gynecology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong Province, People's Republic of China
- Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong Province, People's Republic of China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong Province, People's Republic of China
| | - Shuo Yuan
- Department of Gynecology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong Province, People's Republic of China
| | - Xiao-Jing Liu
- Department of Gynecology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong Province, People's Republic of China
| | - Yan-Xi Huang
- Department of Gynecology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong Province, People's Republic of China
| | - Pin Qiu
- Department of Gynecology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong Province, People's Republic of China
| | - Jie Gao
- Department of Gynecology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong Province, People's Republic of China.
| | - Gao-Pi Deng
- Department of Gynecology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510080, Guangdong Province, People's Republic of China.
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11
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Liang Z, Xue R, Zhang X, Cao M, Sun S, Zhang Y, Zhu M, Zhang Z, Dai K, Pan J, Cao G, Wang C, Hu X, Gong C. β-Arrestin 2 acts an adaptor protein that facilitates viral replication in silkworm. Int J Biol Macromol 2022; 208:1009-1018. [PMID: 35381288 DOI: 10.1016/j.ijbiomac.2022.03.213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 07/24/2021] [Accepted: 03/31/2022] [Indexed: 11/19/2022]
Abstract
β-Arrestin 2 is known to be a widely distributed adaptor protein in mammals but its function has never been reported in Lepidoptera insects. Herein, the β-Arrestin 2 (BmArrestin 2) gene from silkworm was cloned and characterized. The spatiotemporal expression level of BmArrestin 2 was highest in the gonads at the 3rd day of 5th instar, whereas the highest and lowest abundance of BmArrestin 2 were identified in the tracheal and testis, respectively. BmArrestin 2 is mainly distributed in the cytoplasm. Furthermore, in BmN cells,overexpression of BmArrestin 2 promoted Bombyx mori nucleopolyhedrovirus (BmNPV) and B. mori cytoplasmic polyhedrosis virus (BmCPV) replication as the increment of the concentration of plasmid transfection, whereas silencing the gene with specific siRNA inhibited viral replication. Replication of BmNPV and BmCPV also was weakened using BmArrestin 2 antiserum as the increment of the concentration. Immunofluorescent staining revealed the invasion of recombinant BmNPV or BmCPV was decreased after blocking endogenous BmArrestin 2. On the other hand, BmArrestin 2 co-localizes with recombinant BmNPV and BmCPV virions in BmN cells. These results suggest that BmArrestin 2 may represent a novel target for antiviral strategies, as it is an adaptor protein that plays a key role in virus replication.
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Affiliation(s)
- Zi Liang
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China
| | - Renyu Xue
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China
| | - Xing Zhang
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China
| | - Manman Cao
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China
| | - Sufei Sun
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China
| | - Yunshan Zhang
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China
| | - Min Zhu
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China
| | - Ziyao Zhang
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China
| | - Kun Dai
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China
| | - Jun Pan
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China
| | - Guangli Cao
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China; Institute of Agricultural Biotechnology and Ecological Research, Soochow University, Suzhou 215123, China
| | - Chonglong Wang
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China; Institute of Agricultural Biotechnology and Ecological Research, Soochow University, Suzhou 215123, China
| | - Xiaolong Hu
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China; Institute of Agricultural Biotechnology and Ecological Research, Soochow University, Suzhou 215123, China.
| | - Chengliang Gong
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China; Institute of Agricultural Biotechnology and Ecological Research, Soochow University, Suzhou 215123, China.
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12
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Konwar C, Asiimwe R, Inkster AM, Merrill SM, Negri GL, Aristizabal MJ, Rider CF, MacIsaac JL, Carlsten C, Kobor MS. Risk-focused differences in molecular processes implicated in SARS-CoV-2 infection: corollaries in DNA methylation and gene expression. Epigenetics Chromatin 2021; 14:54. [PMID: 34895312 PMCID: PMC8665859 DOI: 10.1186/s13072-021-00428-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 11/26/2021] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Understanding the molecular basis of susceptibility factors to the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is a global health imperative. It is well-established that males are more likely to acquire SARS-CoV-2 infection and exhibit more severe outcomes. Similarly, exposure to air pollutants and pre-existing respiratory chronic conditions, such as asthma and chronic obstructive respiratory disease (COPD) confer an increased risk to coronavirus disease 2019 (COVID-19). METHODS We investigated molecular patterns associated with risk factors in 398 candidate genes relevant to COVID-19 biology. To accomplish this, we downloaded DNA methylation and gene expression data sets from publicly available repositories (GEO and GTEx Portal) and utilized data from an empirical controlled human exposure study conducted by our team. RESULTS First, we observed sex-biased DNA methylation patterns in autosomal immune genes, such as NLRP2, TLE1, GPX1, and ARRB2 (FDR < 0.05, magnitude of DNA methylation difference Δβ > 0.05). Second, our analysis on the X-linked genes identified sex associated DNA methylation profiles in genes, such as ACE2, CA5B, and HS6ST2 (FDR < 0.05, Δβ > 0.05). These associations were observed across multiple respiratory tissues (lung, nasal epithelia, airway epithelia, and bronchoalveolar lavage) and in whole blood. Some of these genes, such as NLRP2 and CA5B, also exhibited sex-biased gene expression patterns. In addition, we found differential DNA methylation patterns by COVID-19 status for genes, such as NLRP2 and ACE2 in an exploratory analysis of an empirical data set reporting on human COVID-9 infections. Third, we identified modest DNA methylation changes in CpGs associated with PRIM2 and TATDN1 (FDR < 0.1, Δβ > 0.05) in response to particle-depleted diesel exhaust in bronchoalveolar lavage. Finally, we captured a DNA methylation signature associated with COPD diagnosis in a gene involved in nicotine dependence (COMT) (FDR < 0.1, Δβ > 0.05). CONCLUSION Our findings on sex differences might be of clinical relevance given that they revealed molecular associations of sex-biased differences in COVID-19. Specifically, our results hinted at a potentially exaggerated immune response in males linked to autosomal genes, such as NLRP2. In contrast, our findings at X-linked loci such as ACE2 suggested a potentially distinct DNA methylation pattern in females that may interact with its mRNA expression and inactivation status. We also found tissue-specific DNA methylation differences in response to particulate exposure potentially capturing a nitrogen dioxide (NO2) effect-a contributor to COVID-19 susceptibility. While we identified a molecular signature associated with COPD, all COPD-affected individuals were smokers, which may either reflect an association with the disease, smoking, or may highlight a compounded effect of these two risk factors in COVID-19. Overall, our findings point towards a molecular basis of variation in susceptibility factors that may partly explain disparities in the risk for SARS-CoV-2 infection.
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Affiliation(s)
- Chaini Konwar
- BC Children's Hospital Research Institute (BCCHR), 950 West 28th Avenue, Vancouver, BC, V5Z 4H4, Canada
- Centre for Molecular Medicine and Therapeutics, Vancouver, BC, V6H 0B3, Canada
| | - Rebecca Asiimwe
- BC Children's Hospital Research Institute (BCCHR), 950 West 28th Avenue, Vancouver, BC, V5Z 4H4, Canada
- Centre for Molecular Medicine and Therapeutics, Vancouver, BC, V6H 0B3, Canada
| | - Amy M Inkster
- BC Children's Hospital Research Institute (BCCHR), 950 West 28th Avenue, Vancouver, BC, V5Z 4H4, Canada
- The Department of Medical Genetics, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada
| | - Sarah M Merrill
- BC Children's Hospital Research Institute (BCCHR), 950 West 28th Avenue, Vancouver, BC, V5Z 4H4, Canada
- Centre for Molecular Medicine and Therapeutics, Vancouver, BC, V6H 0B3, Canada
| | - Gian L Negri
- Canada's Michael Smith Genome Sciences Centre, BC Cancer, Vancouver, BC, V5Z 1L3, Canada
| | - Maria J Aristizabal
- BC Children's Hospital Research Institute (BCCHR), 950 West 28th Avenue, Vancouver, BC, V5Z 4H4, Canada
- Centre for Molecular Medicine and Therapeutics, Vancouver, BC, V6H 0B3, Canada
- The Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, M5S 3B2, Canada
- Department of Biology, Queen' University, Kingston, ON, K7L 3N6, Canada
- Program in Child and Brain Development, CIFAR, MaRS Centre, 661 University Ave, Toronto, ON, M5G 1M1, Canada
| | - Christopher F Rider
- The Department of Respiratory Medicine, University of British Columbia, Vancouver, BC, V5Z 1M9, Canada
| | - Julie L MacIsaac
- BC Children's Hospital Research Institute (BCCHR), 950 West 28th Avenue, Vancouver, BC, V5Z 4H4, Canada
- Centre for Molecular Medicine and Therapeutics, Vancouver, BC, V6H 0B3, Canada
| | - Christopher Carlsten
- The Department of Respiratory Medicine, University of British Columbia, Vancouver, BC, V5Z 1M9, Canada
| | - Michael S Kobor
- BC Children's Hospital Research Institute (BCCHR), 950 West 28th Avenue, Vancouver, BC, V5Z 4H4, Canada.
- Centre for Molecular Medicine and Therapeutics, Vancouver, BC, V6H 0B3, Canada.
- Program in Child and Brain Development, CIFAR, MaRS Centre, 661 University Ave, Toronto, ON, M5G 1M1, Canada.
- The Department of Medical Genetics, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada.
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13
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Marzook A, Chen S, Pickford P, Lucey M, Wang Y, Corrêa IR, Broichhagen J, Hodson DJ, Salem V, Rutter GA, Tan TM, Bloom SR, Tomas A, Jones B. Evaluation of efficacy- versus affinity-driven agonism with biased GLP-1R ligands P5 and exendin-F1. Biochem Pharmacol 2021; 190:114656. [PMID: 34129856 PMCID: PMC8346945 DOI: 10.1016/j.bcp.2021.114656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 06/09/2021] [Accepted: 06/11/2021] [Indexed: 02/09/2023]
Abstract
The glucagon-like peptide-1 receptor (GLP-1R) is an important regulator of glucose homeostasis and has been successfully targeted for the treatment of type 2 diabetes. Recently described biased GLP-1R agonists with selective reductions in β-arrestin versus G protein coupling show improved metabolic actions in vivo. However, two prototypical G protein-favouring GLP-1R agonists, P5 and exendin-F1, are reported to show divergent effects on insulin secretion. In this study we aimed to resolve this discrepancy by performing a side-by-side characterisation of these two ligands across a variety of in vitro and in vivo assays. Exendin-F1 showed reduced acute efficacy versus P5 for several readouts, including recruitment of mini-G proteins, G protein-coupled receptor kinases (GRKs) and β-arrestin-2. Maximal responses were also lower for both GLP-1R internalisation and the presence of active GLP-1R-mini-Gs complexes in early endosomes with exendin-F1 treatment. In contrast, prolonged insulin secretion in vitro and sustained anti-hyperglycaemic efficacy in mice were both greater with exendin-F1 than with P5. We conclude that the particularly low acute efficacy of exendin-F1 and associated reductions in GLP-1R downregulation appear to be more important than preservation of endosomal signalling to allow sustained insulin secretion responses. This has implications for the ongoing development of affinity- versus efficacy-driven biased GLP-1R agonists as treatments for metabolic disease.
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Affiliation(s)
- Amaara Marzook
- Section of Endocrinology and Investigative Medicine, Imperial College London, London, United Kingdom
| | - Shiqian Chen
- Section of Endocrinology and Investigative Medicine, Imperial College London, London, United Kingdom
| | - Phil Pickford
- Section of Endocrinology and Investigative Medicine, Imperial College London, London, United Kingdom
| | - Maria Lucey
- Section of Endocrinology and Investigative Medicine, Imperial College London, London, United Kingdom
| | - Yifan Wang
- Section of Cell Biology and Functional Genomics, Imperial College London, London, United Kingdom
| | | | | | - David J Hodson
- Institute of Metabolism and Systems Research (IMSR), University of Birmingham, Birmingham, United Kingdom; Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, United Kingdom; Centre of Membrane Proteins and Receptors (COMPARE), Universities of Birmingham and Nottingham, Midlands, United Kingdom
| | - Victoria Salem
- Section of Endocrinology and Investigative Medicine, Imperial College London, London, United Kingdom; Department of Bioengineering, Imperial College London, London, United Kingdom
| | - Guy A Rutter
- Section of Cell Biology and Functional Genomics, Imperial College London, London, United Kingdom; Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Tricia M Tan
- Section of Endocrinology and Investigative Medicine, Imperial College London, London, United Kingdom
| | - Stephen R Bloom
- Section of Endocrinology and Investigative Medicine, Imperial College London, London, United Kingdom
| | - Alejandra Tomas
- Section of Cell Biology and Functional Genomics, Imperial College London, London, United Kingdom
| | - Ben Jones
- Section of Endocrinology and Investigative Medicine, Imperial College London, London, United Kingdom
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14
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Du JJ, Sun JC, Li N, Li XQ, Sun WY, Wei W. β-Arrestin2 deficiency attenuates oxidative stress in mouse hepatic fibrosis through modulation of NOX4. Acta Pharmacol Sin 2021; 42:1090-1100. [PMID: 33116250 PMCID: PMC8209231 DOI: 10.1038/s41401-020-00545-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 09/21/2020] [Indexed: 02/06/2023] Open
Abstract
Hepatic fibrosis is a disease characterized by excessive deposition of extracellular matrix (ECM) in the liver. Activation of hepatic stellate cells (HSCs) is responsible for most of ECM production. Oxidative stress and reactive oxygen species (ROS) may be important factors leading to liver fibrosis. NADPH oxidase 4 (NOX4) is the main source of ROS in hepatic fibrosis, but the mechanism by which NOX4 regulates oxidative stress is not fully understood. β-Arrestin2 is a multifunctional scaffold protein that regulates receptor endocytosis, signaling and trafficking. In this study, we investigated whether β-arrestin2 regulated oxidative stress in hepatic fibrosis. Both β-arrestin2 knockout (Arrb2 KO) mice and wild-type mice were intraperitoneally injected with carbon tetrachloride (CCl4) to induce hepatic fibrosis. Arrb2 KO mice showed significantly attenuated liver fibrosis, decreased ROS levels and NOX4 expression, and reduced collagen levels in their livers. In vitro, NOX4 knockdown significantly inhibited ROS production, and decreased expression of alpha-smooth muscle actin in angiotensin II-stimulated human HSC cell line LX-2. Through overexpression or depletion of β-arrestin2 in LX-2 cells, we revealed that decreased β-arrestin2 inhibited ROS levels and NOX4 expression, and reduced collagen production; it also inhibited activation of ERK and JNK signaling pathways. These results demonstrate that β-arrestin2 deficiency protects against liver fibrosis by downregulating ROS production through NOX4. This effect appears to be mediated by ERK and JNK signaling pathways. Thus, targeted inhibition of β-arrestin2 might reduce oxidative stress and inhibit the progression of liver fibrosis.
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Affiliation(s)
- Jia-Jia Du
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China
| | - Jia-Chang Sun
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China
| | - Nan Li
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China
| | - Xiu-Qin Li
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China
| | - Wu-Yi Sun
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China.
| | - Wei Wei
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China.
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15
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Lino CA, de Bortoli Teixeira L, Capelupe Simões S, de Oliveira Silva T, Diniz GP, da Costa-Neto CM, Barreto-Chaves MLM. Beta-arrestin 2 mediates cardiac hypertrophy induced by thyroid hormones via AT1R. J Cell Physiol 2021; 236:4640-4654. [PMID: 33345322 DOI: 10.1002/jcp.30187] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 11/16/2020] [Accepted: 11/18/2020] [Indexed: 12/30/2022]
Abstract
We have previously reported that angiotensin II receptor type 1 (AT1R) contributes to the hypertrophic effects of thyroid hormones (TH) in cardiac cells. Even though evidence indicates crosstalks between TH and AT1R, the underlying mechanisms are poorly understood. Beta-arrestin (ARRB) signaling has been described as noncanonical signal transduction pathway that exerts important effects in the cardiovascular system through G-protein-coupled receptors, as AT1R. Herein, we investigated the contribution of ARRB signaling in TH-induced cardiomyocyte hypertrophy. Primary cardiomyocyte cultures were treated with Triiodothyronine (T3) to induce cell hypertrophy. T3 rapidly activates extracellular signal-regulated kinase 1/2 (ERK1/2) signaling, which was partially inhibited by AT1R blockade. Also, ERK1/2 inhibition attenuated the hypertrophic effects of T3. ARRB2 was upregulated by T3, and small interfering RNA assays revealed the role of ARRB2-but not ARRB1-on ERK1/2 activation and cardiomyocyte hypertrophy. Corroborating these findings, the ARRB2-overexpressed cells showed increased expression of hypertrophic markers, which were attenuated by ERK1/2 inhibition. Immunocytochemistry and immunoprecipitation assays revealed the increased expression of nuclear AT1R after T3 stimulation and the increased interaction of AT1R/ARRB2. The inhibition of endocytosis also attenuated the T3 effects on cardiac cells. Our results evidence the contribution of ARRB2 on ERK1/2 activation and cardiomyocyte hypertrophy induced by T3 via AT1R.
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Affiliation(s)
- Caroline Antunes Lino
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Larissa de Bortoli Teixeira
- Department of Biochemistry and Immunology, Ribeirao Preto Medical School, University of Sao Paulo, Sao Paulo, Brazil
| | - Sarah Capelupe Simões
- Department of Biochemistry and Immunology, Ribeirao Preto Medical School, University of Sao Paulo, Sao Paulo, Brazil
| | | | - Gabriela Placoná Diniz
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Claudio Miguel da Costa-Neto
- Department of Biochemistry and Immunology, Ribeirao Preto Medical School, University of Sao Paulo, Sao Paulo, Brazil
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16
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Muchhala KH, Jacob JC, Dewey WL, Akbarali HI. Role of β-arrestin-2 in short- and long-term opioid tolerance in the dorsal root ganglia. Eur J Pharmacol 2021; 899:174007. [PMID: 33705801 PMCID: PMC8058323 DOI: 10.1016/j.ejphar.2021.174007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 02/25/2021] [Accepted: 02/28/2021] [Indexed: 11/26/2022]
Abstract
G-protein-biased agonists with reduced β-arrestin-2 activation are being investigated as safer alternatives to clinically-used opioids. β-arrestin-2 has been implicated in the mechanism of opioid-induced antinociceptive tolerance. Opioid-induced analgesic tolerance is classically considered as centrally-mediated, but recent reports implicate nociceptive dorsal root ganglia neurons as critical mediators in this process. Here, we investigated the role of β-arrestin-2 in the mechanism of opioid tolerance in dorsal root ganglia nociceptive neurons using β-arrestin-2 knockout mice and the G-protein-biased μ-opioid receptor agonist, TRV130. Whole-cell current-clamp electrophysiology experiments revealed that 15-18-h overnight exposure to 10 μM morphine in vitro induced acute tolerance in β-arrestin-2 wild-type but not knockout neurons. Furthermore, in wild-type neurons circumventing β-arrestin-2 activation by overnight treatment with 200 nM TRV130 attenuated tolerance. Similarly, acute morphine tolerance in vivo in β-arrestin-2 knockout mice was prevented in the warm-water tail-withdrawal assay. Treatment with 30 mg/kg TRV130 s.c. also inhibited acute antinociceptive tolerance in vivo in wild-type mice. Alternately, in β-arrestin-2 knockout neurons tolerance induced by 7-day in vivo exposure to 50 mg morphine pellet was conserved. Likewise, β-arrestin-2 deletion did not mitigate in vivo antinociceptive tolerance induced by 7-day exposure to 25 mg or 50 mg morphine pellet in both female or male mice, respectively. Consequently, these results indicated that β-arrestin-2 mediates acute but not chronic opioid tolerance in dorsal root ganglia neurons and to antinociception in vivo. This suggests that opioid-induced antinociceptive tolerance may develop even in the absence of β-arrestin-2 activation, and thus significantly affect the clinical utility of biased agonists.
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MESH Headings
- Analgesics, Opioid/pharmacology
- Animals
- Behavior, Animal/drug effects
- Cells, Cultured
- Disease Models, Animal
- Drug Tolerance
- Female
- Ganglia, Spinal/drug effects
- Ganglia, Spinal/metabolism
- Ganglia, Spinal/physiopathology
- Male
- Mice, Knockout
- Morphine/pharmacology
- Neurons/drug effects
- Neurons/metabolism
- Nociceptive Pain/genetics
- Nociceptive Pain/metabolism
- Nociceptive Pain/physiopathology
- Nociceptive Pain/prevention & control
- Pain Threshold/drug effects
- Receptors, Opioid, mu/agonists
- Receptors, Opioid, mu/metabolism
- Spiro Compounds/pharmacology
- Thiophenes/pharmacology
- Time Factors
- beta-Arrestin 2/deficiency
- beta-Arrestin 2/genetics
- beta-Arrestin 2/metabolism
- Mice
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Affiliation(s)
- Karan H Muchhala
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, 1112 East Clay St, Richmond, VA, 23298, USA
| | - Joanna C Jacob
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, 1112 East Clay St, Richmond, VA, 23298, USA
| | - William L Dewey
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, 1112 East Clay St, Richmond, VA, 23298, USA
| | - Hamid I Akbarali
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, 1112 East Clay St, Richmond, VA, 23298, USA.
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17
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Li CX, Zheng Y, Zhu H, Li CW, He Z, Wang C, Ding JH, Hu G, Lu M. β-arrestin 2 is essential for fluoxetine-mediated promotion of hippocampal neurogenesis in a mouse model of depression. Acta Pharmacol Sin 2021; 42:679-690. [PMID: 33526871 PMCID: PMC8115338 DOI: 10.1038/s41401-020-00576-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 11/08/2020] [Indexed: 12/15/2022] Open
Abstract
Over the last decade, the roles of β-arrestins in the treatment of neuropsychological diseases have become increasingly appreciated. Fluoxetine is the first selective serotonin reuptake inhibitor developed and is approved for the clinical treatment of depression. Emerging evidence suggests that fluoxetine can directly combine with the 5-HT receptor, which is a member of the G protein-coupled receptor (GPCR) family, in addition to suppressing the serotonin transporter. In this study, we prepared a chronic mild stress (CMS)-induced depression model with β-arrestin2-/- mice and cultured adult neural stem cells (ANSCs) to investigate the involvement of the 5-HT receptor-β-arrestin axis in the pathogenesis of depression and in the therapeutic effect of fluoxetine. We found that β-arrestin2 deletion abolished the fluoxetine-mediated improvement in depression-like behaviors and monoamine neurotransmitter levels, although β-arrestin2 knockout did not aggravate CMS-induced changes in mouse behaviors and neurotransmitters. Notably, the β-arrestin2-/- mice had a shortened dendritic length and reduced dendritic spine density, as well as decreased neural precursor cells, compared to the WT mice under both basal and CMS conditions. We further found that β-arrestin2 knockout decreased the number of proliferating cells in the hippocampal dentate gyrus and suppressed the proliferative capability of ANSCs in vitro. Moreover, β-arrestin2 knockout aggravated the impairment of cell proliferation induced by corticosterone and further blocked the fluoxetine-mediated promotion of mouse hippocampal neurogenesis. Mechanistically, we found that the 5-HT2BR-β-arrestin2-PI3K/Akt axis is essential to maintain the modulation of hippocampal neurogenesis in depressed mice. Our study may provide a promising target for the development of new antidepressant drugs.
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Affiliation(s)
- Chen-Xin Li
- Department of Pharmacology, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Ying Zheng
- Department of Pharmacology, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Hong Zhu
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, Nanjing, 211166, China
| | - Cheng-Wu Li
- Department of Pharmacology, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Zhang He
- Department of Pharmacology, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Cong Wang
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, Nanjing, 211166, China
| | - Jian-Hua Ding
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, Nanjing, 211166, China
| | - Gang Hu
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, Nanjing, 211166, China.
- Department of Pharmacology, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
| | - Ming Lu
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, Nanjing, 211166, China.
- Neuroprotective Drug Discovery Key Laboratory, Department of Pharmacology, Nanjing Medical University, Nanjing, 211166, China.
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18
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Casella I, Ambrosio C. Prokineticin receptors interact unselectively with several G protein subtypes but bind selectively to β-arrestin 2. Cell Signal 2021; 83:110000. [PMID: 33811988 DOI: 10.1016/j.cellsig.2021.110000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/29/2021] [Accepted: 03/30/2021] [Indexed: 11/19/2022]
Abstract
Prokineticin 1 (pk1) and prokineticin 2 (pk2) interact with two structurally related G-protein coupled receptors, prokineticin receptor 1 (PKR1) and prokineticin receptor 2 (PKR2). Cellular signalling studies show that the activated receptors can evoke Ca2+-mobilization, pertussis toxin-sensitive ERK phosphorylation, and intracellular cAMP accumulation, which suggests the partecipation of several G protein subtypes, such as Gq/11, Gi/o and Gs. However, direct interactions with these transduction proteins have not been studied yet. Here we measured by bioluminescence resonance energy transfer (BRET) the association of PKR1 and PKR2 with different heterotrimeric Gα proteins in response to pk1 and pk2 activation. Using host-cell lines carrying gene deletions of Gαq/11 or Gαs, and pertussis toxin treatment to abolish the receptor interactions with Gαi/o, we determined that both receptors could couple with comparable efficiency to Gq/11 and Gi/o, but far less efficiently to Gs or other pertussis toxin-insensitive G proteins. We also used BRET methodology to assess the association of prokineticin receptors with β-arrestin isoforms. Fluorescent versions of the isoforms were transfected both in HEK293 cells and in double KO β-arrestin 1/2 mouse fibroblasts, to study receptor interaction with the reconstituted individual β-arrestins without background expression of the endogenous genes. Both receptors formed stable BRET-emitting complexes with β-arrestin 2 but not with β-arrestin 1, indicating strong selectivity for the former. In all the studied transducer interactions and in both receptors, pk2 was more potent than pk1 in promoting receptor binding to transduction proteins.
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Affiliation(s)
- Ida Casella
- Istituto Superiore di Sanità, National Center for Drug Reserch and Evaluation, Viale Regina Elena, 299, 00161 Rome, Italy.
| | - Caterina Ambrosio
- Istituto Superiore di Sanità, National Center for Drug Reserch and Evaluation, Viale Regina Elena, 299, 00161 Rome, Italy
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19
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Kageyama K, Hagiwara R, Niioka K, Takayasu S, Daimon M. Differential effects of β-arrestin1 and β-arrestin2 on somatostatin receptors in murine AtT-20 corticotroph tumor cells. Endocr J 2021; 68:163-170. [PMID: 32963176 DOI: 10.1507/endocrj.ej20-0251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Autonomous production of adrenocorticotropic hormone (ACTH) from pituitary corticotroph adenomas is the primary cause of Cushing's disease. Somatostatin receptor, a G protein-coupled receptor (GPCR), types 2 (SSTR2) and 5 (SSTR5) mRNA expression is greater than that of other SSTR subtypes in human corticotroph adenomas. Further, the multiligand SOM230 shows potent effects in decreasing ACTH plasma levels and urinary free cortisol levels in patients with Cushing's disease. We previously showed that both Sstr2 and Sstr5 mRNA levels were unaffected by SOM230 treatment, suggesting that both receptors might not be downregulated by the agonist. Intracellular molecules, such as β-arrestins, modulate ligand activated-receptor responses. In the present study, we determined regulation of β-arrestin1 and β-arrestin2 by SOM230 and dexamethasone in murine AtT-20 corticotroph tumor cells. In addition, we examined the effects of β-arrestin1 and β-arrestin2 on Sstr mRNA and their protein levels. SOM230 treatment increased β-arrestin1 mRNA levels and did not alter β-arrestin2 mRNA levels. SOM230 treatment could induce β-arrestin1 production in corticotroph tumor cells. Dexamethasone treatment decreased β-arrestin2 mRNA levels. β-arrestin2 knockdown increased proopiomelanocortin, and both Sstr2 and Sstr5 mRNA and their protein levels. The β-arrestin2 knockdown-increased proopiomelanocortin mRNA levels were canceled by SOM230 treatment.
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Affiliation(s)
- Kazunori Kageyama
- Department of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Rie Hagiwara
- Department of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Kanako Niioka
- Department of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Shinobu Takayasu
- Department of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Makoto Daimon
- Department of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
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20
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Ferraiolo M, Beckers P, Marquet N, Roumain M, Ruiz L, Dupuis N, Hanson J, Hermans E. β-arrestin2 recruitment at the β2 adrenergic receptor: A luciferase complementation assay adapted for undergraduate training in pharmacology. Pharmacol Res Perspect 2021; 9:e00706. [PMID: 33508174 PMCID: PMC7842874 DOI: 10.1002/prp2.706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/25/2020] [Accepted: 11/30/2020] [Indexed: 11/21/2022] Open
Abstract
In the context of pharmacology teaching, hands-on activities constitute an essential complement to theoretical lectures. Frequently, these activities consist in exposing fresh animal tissues or even living animals to selected drugs and qualitatively or quantitatively evaluating functional responses. However, technological advancements in pharmacological research and the growing concerns for animal experimentation support the need for innovative and flexible in vitro assays adapted for teaching purposes. We herein report the implementation of a luciferase complementation assay (LCA) enabling to dynamically monitor β-arrestin2 recruitment at the β2 adrenergic receptor in the framework of pharmacological training at the faculty of Pharmacy and Biomedical Sciences. The assay allowed students to quantitatively characterize the competitive antagonism of propranolol, and to calculate pEC50 , pKB , and pA2 values after a guided data analysis session. Moreover, the newly implemented workshop delivered highly reproducible results and were generally appreciated by students. As such, we report that the luciferase complementation-based assay proved to be a straightforward, robust, and cost-effective alternative to experiments performed on animal tissues, constituting a useful and flexible tool to enhance and update current hands-on training in the context of pharmacological teaching.
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Affiliation(s)
- Mattia Ferraiolo
- Neuropharmacology LaboratoryInstitute of NeuroscienceUCLouvainBrusselsBelgium
- Faculty of Pharmacy and Biomedical SciencesUCLouvainBrusselsBelgium
| | - Pauline Beckers
- Neuropharmacology LaboratoryInstitute of NeuroscienceUCLouvainBrusselsBelgium
- Faculty of Pharmacy and Biomedical SciencesUCLouvainBrusselsBelgium
| | - Nicolas Marquet
- Neuropharmacology LaboratoryInstitute of NeuroscienceUCLouvainBrusselsBelgium
| | - Martin Roumain
- Faculty of Pharmacy and Biomedical SciencesUCLouvainBrusselsBelgium
| | - Lucie Ruiz
- Faculty of Pharmacy and Biomedical SciencesUCLouvainBrusselsBelgium
| | - Nadine Dupuis
- Laboratory of Molecular PharmacologyGIGA‐Molecular Biology of DiseaseULiègeLiègeBelgium
| | - Julien Hanson
- Laboratory of Molecular PharmacologyGIGA‐Molecular Biology of DiseaseULiègeLiègeBelgium
| | - Emmanuel Hermans
- Neuropharmacology LaboratoryInstitute of NeuroscienceUCLouvainBrusselsBelgium
- Faculty of Pharmacy and Biomedical SciencesUCLouvainBrusselsBelgium
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21
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Liang H, Lin Z, Ye Y, Luo R, Zeng L. ARRB2 promotes colorectal cancer growth through triggering WTAP. Acta Biochim Biophys Sin (Shanghai) 2021; 53:85-93. [PMID: 33367479 DOI: 10.1093/abbs/gmaa151] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Indexed: 01/14/2023] Open
Abstract
Colorectal cancer (CRC) is one of the most lethal cancers worldwide. The expression of β-arrestin2 (β-Arr2, ARRB2) in CRC has been well investigated; however, its exact mechanism causing the cancer progression remains unclear. In this study, we discovered that the expression level of ARRB2 was significantly upregulated in CRC as compared to the normal tissues by employing the Cancer Genome Atlas (TCGA) data, western blot analysis, and immunohistochemistry. Furthermore, the level of ARRB2 was correlated with the patients' overall survival by Kaplan-Meier analysis. The higher expression of ARRB2 promoted CRC cell growth, enhanced the cell motility, and blocked cell apoptosis, which is crucial for tumor growth. Lastly, the suppression of ARRB2 expression was enough to attenuate the progression of CRC induced by azoxymethane/dextran sodium sulfate. Interestingly, we also found that the knockdown of ARRB2 decreased several cancer pathways mediated by the expression of Wilms tumor 1 associated protein (WTAP), which led to the inhibition of cell proliferation and migration. Altogether, our results demonstrated that ARRB2 promoted the growth and migration of CRC cells by regulating the WTAP expression.
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Affiliation(s)
- Hongguang Liang
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China
- Thoracic Surgery, Jinshazhou Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510168, China
| | - Zelong Lin
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China
| | - Youqiong Ye
- Department of Biochemistry and Molecular Biology, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Rongcheng Luo
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China
- Thoracic Surgery, Jinshazhou Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510168, China
| | - Lixian Zeng
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China
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22
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Azevedo Neto J, Costanzini A, De Giorgio R, Lambert DG, Ruzza C, Calò G. Biased versus Partial Agonism in the Search for Safer Opioid Analgesics. Molecules 2020; 25:molecules25173870. [PMID: 32854452 PMCID: PMC7504468 DOI: 10.3390/molecules25173870] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/21/2020] [Accepted: 08/23/2020] [Indexed: 02/07/2023] Open
Abstract
Opioids such as morphine—acting at the mu opioid receptor—are the mainstay for treatment of moderate to severe pain and have good efficacy in these indications. However, these drugs produce a plethora of unwanted adverse effects including respiratory depression, constipation, immune suppression and with prolonged treatment, tolerance, dependence and abuse liability. Studies in β-arrestin 2 gene knockout (βarr2(−/−)) animals indicate that morphine analgesia is potentiated while side effects are reduced, suggesting that drugs biased away from arrestin may manifest with a reduced-side-effect profile. However, there is controversy in this area with improvement of morphine-induced constipation and reduced respiratory effects in βarr2(−/−) mice. Moreover, studies performed with mice genetically engineered with G-protein-biased mu receptors suggested increased sensitivity of these animals to both analgesic actions and side effects of opioid drugs. Several new molecules have been identified as mu receptor G-protein-biased agonists, including oliceridine (TRV130), PZM21 and SR–17018. These compounds have provided preclinical data with apparent support for bias toward G proteins and the genetic premise of effective and safer analgesics. There are clinical data for oliceridine that have been very recently approved for short term intravenous use in hospitals and other controlled settings. While these data are compelling and provide a potential new pathway-based target for drug discovery, a simpler explanation for the behavior of these biased agonists revolves around differences in intrinsic activity. A highly detailed study comparing oliceridine, PZM21 and SR–17018 (among others) in a range of assays showed that these molecules behave as partial agonists. Moreover, there was a correlation between their therapeutic indices and their efficacies, but not their bias factors. If there is amplification of G-protein, but not arrestin pathways, then agonists with reduced efficacy would show high levels of activity at G-protein and low or absent activity at arrestin; offering analgesia with reduced side effects or ‘apparent bias’. Overall, the current data suggests—and we support—caution in ascribing biased agonism to reduced-side-effect profiles for mu-agonist analgesics.
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Affiliation(s)
- Joaquim Azevedo Neto
- Department of Biomedical and Specialty Surgical Sciences, Section of Pharmacology, University of Ferrara, 44121 Ferrara, Italy; (J.A.N.); (G.C.)
| | - Anna Costanzini
- Department of Morphology, Surgery, Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy; (A.C.); (R.D.G.)
| | - Roberto De Giorgio
- Department of Morphology, Surgery, Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy; (A.C.); (R.D.G.)
| | - David G. Lambert
- Department of Cardiovascular Sciences, Anesthesia, Critical Care and Pain Management, University of Leicester, Leicester LE1 7RH, UK;
| | - Chiara Ruzza
- Department of Biomedical and Specialty Surgical Sciences, Section of Pharmacology, University of Ferrara, 44121 Ferrara, Italy; (J.A.N.); (G.C.)
- Technopole of Ferrara, LTTA Laboratory for Advanced Therapies, 44122 Ferrara, Italy
- Correspondence:
| | - Girolamo Calò
- Department of Biomedical and Specialty Surgical Sciences, Section of Pharmacology, University of Ferrara, 44121 Ferrara, Italy; (J.A.N.); (G.C.)
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23
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Gatto F, Feelders RA, van der Pas R, van Koetsveld P, Bruzzone E, Arvigo M, Dogan F, Lamberts S, Ferone D, Hofland L. β-arrestin expression in corticotroph tumor cells is modulated by glucocorticoids. J Endocrinol 2020; 245:101-113. [PMID: 32027601 DOI: 10.1530/joe-19-0311] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 02/06/2020] [Indexed: 11/08/2022]
Abstract
Pituitary-directed medical treatment for Cushing's disease (CD) is currently represented by membrane receptor targeting drugs (somatostatin analogs and dopamine agonists). Somatostatin and dopamine receptors are regulated by β-arrestins, which have been shown to be differentially regulated by glucocorticoids in non-neuroendocrine cells. In this study we investigated the effects of glucocorticoids on β-arrestin expression in corticotroph tumor cells. First, AtT20 cells, a mouse model of CD, were exposed to dexamethasone (Dex) at different time points and β-arrestin expression was evaluated at mRNA and protein levels. Futhermore, β-arrestin mRNA expression was evaluated in 17 human corticotroph adenoma samples and correlated to patients' pre-operative cortisol levels. We observed that Dex treatment induced a time-dependent increase in β-arrestin 1 mRNA expression and a decrease in β-arrestin 2. The same modulation pattern was observed at protein level. Dex-mediated modulation of β-arrestins was abolished by co-treatment with mifepristone, and Dex withdrawal restored β-arrestin expression to basal levels after 72 h. The evaluation of β-arrestin mRNA in corticotroph adenomas from CD patients with variable disease activity showed a significant positive correlation between β-arrestin 1 mRNA and urinary cortisol levels. The effect of glucocorticoids on β-arrestin levels was confirmed by the analysis of two samples from a single patient, which underwent adenomectomy twice, with different pre-operative cortisol levels. In conclusion, glucocorticoids induce an inverse modulation of the two β-arrestin isofoms in corticotroph tumor cells. Since β-arrestins regulate membrane receptor functions, this finding may help to better understand the variable response to pituitary-targeting drugs in patients with Cushing's disease.
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Affiliation(s)
- Federico Gatto
- Department of Internal Medicine, Rotterdam, The Netherlands
- Endocrinology Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Richard A Feelders
- Department of Internal Medicine, Rotterdam, The Netherlands
- Pituitary Center Rotterdam, Erasmus MC, Rotterdam, The Netherlands
| | | | | | - Eleonora Bruzzone
- Department of Internal Medicine and & Medical Specialties (DIMI) and Center of Excellence for Biomedical Research (CEBR), University of Genoa, Genoa, Italy
| | - Marica Arvigo
- Department of Internal Medicine and & Medical Specialties (DIMI) and Center of Excellence for Biomedical Research (CEBR), University of Genoa, Genoa, Italy
| | - Fadime Dogan
- Department of Internal Medicine, Rotterdam, The Netherlands
| | | | - Diego Ferone
- Endocrinology Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
- Department of Internal Medicine and & Medical Specialties (DIMI) and Center of Excellence for Biomedical Research (CEBR), University of Genoa, Genoa, Italy
| | - Leo Hofland
- Department of Internal Medicine, Rotterdam, The Netherlands
- Pituitary Center Rotterdam, Erasmus MC, Rotterdam, The Netherlands
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Woo JAA, Liu T, Fang CC, Castaño MA, Kee T, Yrigoin K, Yan Y, Cazzaro S, Matlack J, Wang X, Zhao X, Kang DE, Liggett SB. β-Arrestin2 oligomers impair the clearance of pathological tau and increase tau aggregates. Proc Natl Acad Sci U S A 2020; 117:5006-5015. [PMID: 32071246 PMCID: PMC7060747 DOI: 10.1073/pnas.1917194117] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Multiple G protein-coupled receptors (GPCRs) are targets in the treatment of dementia, and the arrestins are common to their signaling. β-Arrestin2 was significantly increased in brains of patients with frontotemporal lobar degeneration (FTLD-tau), a disease second to Alzheimer's as a cause of dementia. Genetic loss and overexpression experiments using genetically encoded reporters and defined mutant constructs in vitro, and in cell lines, primary neurons, and tau P301S mice crossed with β-arrestin2-/- mice, show that β-arrestin2 stabilizes pathogenic tau and promotes tau aggregation. Cell and mouse models of FTLD showed this to be maladaptive, fueling a positive feedback cycle of enhanced neuronal tau via non-GPCR mechanisms. Genetic ablation of β-arrestin2 markedly ablates tau pathology and rescues synaptic plasticity defects in tau P301S transgenic mice. Atomic force microscopy and cellular studies revealed that oligomerized, but not monomeric, β-arrestin2 increases tau by inhibiting self-interaction of the autophagy cargo receptor p62/SQSTM1, impeding p62 autophagy flux. Hence, reduction of oligomerized β-arrestin2 with virus encoding β-arrestin2 mutants acting as dominant-negatives markedly reduces tau-laden neurofibrillary tangles in FTLD mice in vivo. Reducing β-arrestin2 oligomeric status represents a new strategy to alleviate tau pathology in FTLD and related tauopathies.
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Affiliation(s)
- Jung-A A Woo
- University of South Florida Health Byrd Alzheimer's Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33613;
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
| | - Tian Liu
- University of South Florida Health Byrd Alzheimer's Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
| | - Cenxiao C Fang
- University of South Florida Health Byrd Alzheimer's Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
| | - Maria A Castaño
- University of South Florida Health Byrd Alzheimer's Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
| | - Teresa Kee
- University of South Florida Health Byrd Alzheimer's Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
| | - Ksenia Yrigoin
- University of South Florida Health Byrd Alzheimer's Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
| | - Yan Yan
- University of South Florida Health Byrd Alzheimer's Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
| | - Sara Cazzaro
- University of South Florida Health Byrd Alzheimer's Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
| | - Jenet Matlack
- University of South Florida Health Byrd Alzheimer's Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
| | - Xinming Wang
- University of South Florida Health Byrd Alzheimer's Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
| | - Xingyu Zhao
- University of South Florida Health Byrd Alzheimer's Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
| | - David E Kang
- University of South Florida Health Byrd Alzheimer's Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33613;
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
- Research Division, James A. Haley Veteran's Administration Hospital, Tampa, FL 33612
| | - Stephen B Liggett
- University of South Florida Health Byrd Alzheimer's Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33613;
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL 33613
- Department of Medical Engineering, University of South Florida, Tampa, FL 33613
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Sun SZ, Cao H, Yao N, Zhao LL, Zhu XF, Ni EA, Zhu Q, Zhu WZ. β-Arrestin 2 mediates arginine vasopressin-induced IL-6 induction via the ERK 1/2-NF-κB signal pathway in murine hearts. Acta Pharmacol Sin 2020; 41:198-207. [PMID: 31515529 PMCID: PMC7470839 DOI: 10.1038/s41401-019-0292-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 07/17/2019] [Indexed: 12/20/2022] Open
Abstract
Evidence to date suggests that β-arrestins act beyond their role as adapter proteins. Arginine vasopressin (AVP) may be a factor in inflammation and fibrosis in the pathogenesis of heart failure. In the present study we investigated the effect of AVP on inflammatory cytokine IL-6 production in murine hearts and the impact of β-arrestin 2-dependent signaling on AVP-induced IL-6 production. We found that administration of AVP (0.5 U/kg, iv) markedly increased the levels of IL-6 mRNA in rat hearts with the maximum level occurred at 6 h. In β-arrestin 2 KO mouse hearts, deletion of β-arrestin 2 decreased AVP-induced IL-6 mRNA expression. We then performed in vitro experiments in adult rat cardiac fibroblasts (ARCFs). We found that AVP (10-9-10-6 M) dose-dependently increased the expression of IL-6 mRNA and protein, activation of NF-κB signaling and ERK1/2 phosphorylation, whereas knockdown of β-arrestin 2 blocked AVP-induced IL-6 increase, NF-κB activation and ERK1/2 phosphorylation. Pharmacological blockade of ERK1/2 using PD98059 diminished AVP-induced NF-κB activation and IL-6 production. The selective V1A receptor antagonist SR49059 effectively blocked AVP-induced NF-κB phosphorylation and activation as well as IL-6 expression in ARCFs. In AVP-treated mice, pre-injection of SR49059 (2 mg/kg, iv) abolished AVP-induced NF-κB activation and IL-6 production in hearts. The above results suggest that AVP induces IL-6 induction in murine hearts via the V1A receptor-mediated β-arrestin2/ERK1/2/NF-κB pathway, thus reveal a novel mechanism of myocardial inflammation in heart failure involving the V1A/β-arrestin 2/ERK1/2/NF-κB signaling pathway.
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Affiliation(s)
- Shu-Zhen Sun
- Cardiovascular laboratory, Department of Pharmacology, School of Pharmacy, Nantong University, Nantong, 226001, China
| | - Hong Cao
- Cardiovascular laboratory, Department of Pharmacology, School of Pharmacy, Nantong University, Nantong, 226001, China
| | - Na Yao
- Cardiovascular laboratory, Department of Pharmacology, School of Pharmacy, Nantong University, Nantong, 226001, China
| | - Ling-Ling Zhao
- Cardiovascular laboratory, Department of Pharmacology, School of Pharmacy, Nantong University, Nantong, 226001, China
| | - Xiao-Fang Zhu
- Cardiovascular laboratory, Department of Pharmacology, School of Pharmacy, Nantong University, Nantong, 226001, China
| | - Er-An Ni
- Cardiovascular laboratory, Department of Pharmacology, School of Pharmacy, Nantong University, Nantong, 226001, China
| | - Qi Zhu
- Cardiovascular laboratory, Department of Pharmacology, School of Pharmacy, Nantong University, Nantong, 226001, China
| | - Wei-Zhong Zhu
- Cardiovascular laboratory, Department of Pharmacology, School of Pharmacy, Nantong University, Nantong, 226001, China.
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Neumann S, Malik SS, Marcus-Samuels B, Eliseeva E, Jang D, Klubo-Gwiezdzinska J, Krieger CC, Gershengorn MC. Thyrotropin Causes Dose-dependent Biphasic Regulation of cAMP Production Mediated by G s and G i/o Proteins. Mol Pharmacol 2020; 97:2-8. [PMID: 31704717 PMCID: PMC6864415 DOI: 10.1124/mol.119.117382] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 10/18/2019] [Indexed: 12/14/2022] Open
Abstract
The thyrotropin (TSH) receptor (TSHR) signals via G proteins of all four classes and β-arrestin 1. Stimulation of TSHR leads to increasing cAMP production that has been reported as a monotonic dose-response curve that plateaus at high TSH doses. In HEK 293 cells overexpressing TSHRs (HEK-TSHR cells), we found that TSHR activation exhibits an "inverted U-shaped dose-response curve" with increasing cAMP production at low doses of TSH and decreased cAMP production at high doses (>1 mU/ml). Since protein kinase A inhibition by H-89 and knockdown of β-arrestin 1 or β-arrestin 2 did not affect the decreased cAMP production at high TSH doses, we studied the roles of TSHR downregulation and of Gi/Go proteins. A high TSH dose (100 mU/ml) caused a 33% decrease in cell-surface TSHR. However, because inhibiting TSHR downregulation with combined expression of a dominant negative dynamin 1 and β-arrestin 2 knockdown had no effect, we concluded that downregulation is not involved in the biphasic cAMP response. Pertussis toxin, which inhibits activation of Gi/Go, abolished the biphasic response with no statistically significant difference in cAMP levels at 1 and 100 mU/ml TSH. Concordantly, co-knockdown of Gi/Go proteins increased cAMP levels stimulated by 100 mU/ml TSH from 55% to 73% of the peak level. These data show that biphasic regulation of cAMP production is mediated by Gs and Gi/Go at low and high TSH doses, respectively, which may represent a mechanism to prevent overstimulation in TSHR-expressing cells. SIGNIFICANCE STATEMENT: We demonstrate biphasic regulation of TSH-mediated cAMP production involving coupling of the TSH receptor (TSHR) to Gs at low TSH doses and to Gi/o at high TSH doses. We suggest that this biphasic cAMP response allows the TSHR to mediate responses at lower levels of TSH and that decreased cAMP production at high doses may represent a mechanism to prevent overstimulation of TSHR-expressing cells. This mechanism could prevent chronic stimulation of thyroid gland function.
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Affiliation(s)
- Susanne Neumann
- Laboratory of Endocrinology and Receptor Biology (S.N., S.S.M., B.M.-S., E.E., D.J., C.C.K., M.C.G.) and Metabolic Disease Branch (J.K.-G.), National Institutes of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Sarah S Malik
- Laboratory of Endocrinology and Receptor Biology (S.N., S.S.M., B.M.-S., E.E., D.J., C.C.K., M.C.G.) and Metabolic Disease Branch (J.K.-G.), National Institutes of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Bernice Marcus-Samuels
- Laboratory of Endocrinology and Receptor Biology (S.N., S.S.M., B.M.-S., E.E., D.J., C.C.K., M.C.G.) and Metabolic Disease Branch (J.K.-G.), National Institutes of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Elena Eliseeva
- Laboratory of Endocrinology and Receptor Biology (S.N., S.S.M., B.M.-S., E.E., D.J., C.C.K., M.C.G.) and Metabolic Disease Branch (J.K.-G.), National Institutes of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Daesong Jang
- Laboratory of Endocrinology and Receptor Biology (S.N., S.S.M., B.M.-S., E.E., D.J., C.C.K., M.C.G.) and Metabolic Disease Branch (J.K.-G.), National Institutes of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Joanna Klubo-Gwiezdzinska
- Laboratory of Endocrinology and Receptor Biology (S.N., S.S.M., B.M.-S., E.E., D.J., C.C.K., M.C.G.) and Metabolic Disease Branch (J.K.-G.), National Institutes of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Christine C Krieger
- Laboratory of Endocrinology and Receptor Biology (S.N., S.S.M., B.M.-S., E.E., D.J., C.C.K., M.C.G.) and Metabolic Disease Branch (J.K.-G.), National Institutes of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Marvin C Gershengorn
- Laboratory of Endocrinology and Receptor Biology (S.N., S.S.M., B.M.-S., E.E., D.J., C.C.K., M.C.G.) and Metabolic Disease Branch (J.K.-G.), National Institutes of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
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27
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Meister J, Bone DBJ, Godlewski G, Liu Z, Lee RJ, Vishnivetskiy SA, Gurevich VV, Springer D, Kunos G, Wess J. Metabolic effects of skeletal muscle-specific deletion of beta-arrestin-1 and -2 in mice. PLoS Genet 2019; 15:e1008424. [PMID: 31622341 PMCID: PMC6818801 DOI: 10.1371/journal.pgen.1008424] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 10/29/2019] [Accepted: 09/16/2019] [Indexed: 01/01/2023] Open
Abstract
Type 2 diabetes (T2D) has become a major health problem worldwide. Skeletal muscle (SKM) is the key tissue for whole-body glucose disposal and utilization. New drugs aimed at improving insulin sensitivity of SKM would greatly expand available therapeutic options. β-arrestin-1 and -2 (Barr1 and Barr2, respectively) are two intracellular proteins best known for their ability to mediate the desensitization and internalization of G protein-coupled receptors (GPCRs). Recent studies suggest that Barr1 and Barr2 regulate several important metabolic functions including insulin release and hepatic glucose production. Since SKM expresses many GPCRs, including the metabolically important β2-adrenergic receptor, the goal of this study was to examine the potential roles of Barr1 and Barr2 in regulating SKM and whole-body glucose metabolism. Using SKM-specific knockout (KO) mouse lines, we showed that the loss of SKM Barr2, but not of SKM Barr1, resulted in mild improvements in glucose tolerance in diet-induced obese mice. SKM-specific Barr1- and Barr2-KO mice did not show any significant differences in exercise performance. However, lack of SKM Barr2 led to increased glycogen breakdown following a treadmill exercise challenge. Interestingly, mice that lacked both Barr1 and Barr2 in SKM showed no significant metabolic phenotypes. Thus, somewhat surprisingly, our data indicate that SKM β-arrestins play only rather subtle roles (SKM Barr2) in regulating whole-body glucose homeostasis and SKM insulin sensitivity.
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Affiliation(s)
- Jaroslawna Meister
- Molecular Signaling Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD, United States of America
- * E-mail: (JM); (JW)
| | - Derek B. J. Bone
- Molecular Signaling Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD, United States of America
| | - Grzegorz Godlewski
- Laboratory of Physiologic Studies, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD, United States of America
| | - Ziyi Liu
- Laboratory of Physiologic Studies, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD, United States of America
| | - Regina J. Lee
- Molecular Signaling Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD, United States of America
| | | | - Vsevolod V. Gurevich
- Department of Pharmacology, Vanderbilt University, Nashville, TN, United States of America
| | - Danielle Springer
- Murine Phenotyping Core, National Heart, Lung, and Blood Institute, Bethesda, MD, United States of America
| | - George Kunos
- Laboratory of Physiologic Studies, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD, United States of America
| | - Jürgen Wess
- Molecular Signaling Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD, United States of America
- * E-mail: (JM); (JW)
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Shi E, Zhou X, Li D, Zhang Y, Yuan J, Zou J. β-Arrestin2 regulates the rapid component of delayed rectifier K+ currents and cardiac action potential of guinea pig cardiomyocytes after adrenergic stimulation. Cell Mol Biol (Noisy-le-grand) 2019; 65:132-137. [PMID: 31880531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 09/24/2019] [Accepted: 09/27/2019] [Indexed: 06/10/2023]
Abstract
A decrease in the rapid component of delayed rectifier potassium current (IKr) during chronic heart failure (CHF) prolongs action potential (AP), and plays a key role in the pathogenesis of ventricular arrhythmias. β-Arrestin2 has been shown to restore the inotropic reserve of β-adrenergic regulation, but little or nothing is known about its effect on intrinsic channel. This study investigated the role of β-arrestin2 in the regulation of cardiac hERG/IKr potassium channel and AP during chronic adrenergic stimulation. Single left ventricular myocytes were isolated from guinea pig heart, and were transfected with adenovirus encoding β-arrestin2, or β-arrestin2 siRNA or an empty adenovirus. Cell cultures containing 10 nM isoproterenol, 1 nM phenylephrine or vehicle alone (control medium) were electro-physiologically examined after 48 h of incubation. Action potential duration at 50 and 90 % of repolarization (APD50 and APD90) were measured using whole-cell patch-clamp recording. Sustained adrenergic stimulation significantly reduced the density of the IKr current (p < 0.001). β-Arrestin2 expression in cell cultures treated with isoproterenol or phenylephrine was significantly downregulated after adrenergic stimulation (p < 0.001). Overexpression of β-arrestin2 significantly attenuated isoproterenol or phenylephrine-induced reduction in IKr current. It also prevented the phenylephrine-induced prolongation of AP (p < 0.05 for APD50 and p < 0.001 for APD90), but did not significantly affect AP profile after exposure of the cardiomyocytes to isoproterenol (p > 0.05). Therefore, Increased levels of β-Arrestin2 weaken dysregulation of IKr current and prevent excessive AP prolongation, making it an effective anti-arrhythmic strategy.
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Affiliation(s)
- Erdan Shi
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Xiaozhu Zhou
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Dongcheng Li
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Yuzhen Zhang
- Department of Cardiology, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, China
| | - Jiamin Yuan
- Department of Cardiology, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, China
| | - Jiangang Zou
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
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Philip JL, Xu X, Han M, Akhter SA, Razzaque MA. Regulation of cardiac fibroblast-mediated maladaptive ventricular remodeling by β-arrestins. PLoS One 2019; 14:e0219011. [PMID: 31269046 PMCID: PMC6609028 DOI: 10.1371/journal.pone.0219011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 06/13/2019] [Indexed: 01/17/2023] Open
Abstract
Cardiac fibroblasts (CF) play a critical role in post-infarction remodeling which can ultimately lead to pathological fibrosis and heart failure. Recent evidence demonstrates that remote (non-infarct) territory fibrosis is a major mechanism for ventricular dysfunction and arrhythmogenesis. β-arrestins are important signaling molecules involved in β-adrenergic receptor (β-AR) desensitization and can also mediate signaling in a G protein independent fashion. Recent work has provided evidence that β-arrestin signaling in the heart may be beneficial, however, these studies have primarily focused on cardiac myocytes and their role in adult CF biology has not been well studied. In this study, we show that β-arrestins can regulate CF biology and contribute to pathological fibrosis. Adult male rats underwent LAD ligation to induce infarction and were studied by echocardiography. There was a significant decline in LV function at 2–12 weeks post-MI with increased infarct and remote territory fibrosis by histology consistent with maladaptive remodeling. Collagen synthesis was upregulated 2.9-fold in CF isolated at 8 and 12 weeks post-MI and β-arrestin expression was significantly increased. β-adrenergic signaling was uncoupled in the post-MI CF and β-agonist-mediated inhibition of collagen synthesis was lost. Knockdown of β-arrestin1 or 2 in the post-MI CF inhibited transformation to myofibroblasts as well as basal and TGF-β-stimulated collagen synthesis. These data suggest that β-arrestins can regulate CF biology and that targeted inhibition of these signaling molecules may represent a novel approach to prevent post-infarction pathological fibrosis and the transition to HF.
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Affiliation(s)
- Jennifer L. Philip
- Department of Surgery, Division of Cardiothoracic Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
- Department of Surgery, Section of Cardiac and Thoracic Surgery, The University of Chicago Medical Center, Chicago, Illinois, United States of America
| | - Xianyao Xu
- Department of Surgery, Division of Cardiothoracic Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
- Department of Surgery, Section of Cardiac and Thoracic Surgery, The University of Chicago Medical Center, Chicago, Illinois, United States of America
| | - Mei Han
- Department of Surgery, Division of Cardiothoracic Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
- Department of Surgery, Section of Cardiac and Thoracic Surgery, The University of Chicago Medical Center, Chicago, Illinois, United States of America
| | - Shahab A. Akhter
- Department of Surgery, Division of Cardiothoracic Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
- Department of Surgery, Section of Cardiac and Thoracic Surgery, The University of Chicago Medical Center, Chicago, Illinois, United States of America
- Department of Cardiovascular Sciences, East Carolina Heart Institute at East Carolina University, Greenville, North Carolina, United States of America
| | - Md Abdur Razzaque
- Department of Surgery, Division of Cardiothoracic Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
- Department of Surgery and Cardiovascular Center of Excellence, Louisiana State University, New Orleans, Louisiana, United States of America
- * E-mail:
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Thompson SL, Dulawa SC. Dissecting the roles of β-arrestin2 and GSK-3 signaling in 5-HT1BR-mediated perseverative behavior and prepulse inhibition deficits in mice. PLoS One 2019; 14:e0211239. [PMID: 30721232 PMCID: PMC6363181 DOI: 10.1371/journal.pone.0211239] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 01/09/2019] [Indexed: 12/16/2022] Open
Abstract
Serotonin-1B receptors (5-HT1BRs) modulate perseverative behaviors and prepulse inhibition (PPI) in humans and mice. These inhibitory G-protein-coupled receptors signal through a canonical G-protein-coupled pathway that is modulated by GSK-3β, and a noncanonical pathway mediated by the adaptor protein β-arrestin2 (Arrb2). Given the development of biased ligands that differentially affect canonical versus noncanonical signaling, we examined which signaling pathway mediates 5-HT1BR agonist-induced locomotor perseveration and PPI deficits, behavioral phenotypes observed in both obsessive-compulsive disorder (OCD) and autism spectrum disorder (ASD). To assess the role of canonical 5-HT1BR signaling, mice received acute pretreatment with a GSK-3 inhibitor (SB216763 or AR-A014418) and acute treatment with the 5-HT1A/1B receptor agonist RU24969 prior to assessing perseverative locomotor behavior in the open field, and PPI. To determine the role of noncanonical 5-HT1BR signaling, Arrb2 wild-type (WT), heterozygous (HT), and knockout (KO) mice received acute RU24969 treatment prior to behavioral testing. GSK-3 inhibition increased locomotor perseveration overall, and also failed to influence the RU24969-induced perseverative locomotor pattern in the open field. Yet, GSK-3 inhibition modestly reduced RU24969-induced PPI deficits. On the other hand, Arrb2 HT and KO mice showed reduced locomotion and no changes in perseveration overall, in addition to modest reductions in RU24969-induced locomotion and PPI deficits. In conclusion, our data do not support use of either GSK-3 inhibitors or β-arrestin2 inhibition in treatment of perseverative behaviors.
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Affiliation(s)
- Summer L. Thompson
- Department of Psychiatry, University of California San Diego, La Jolla, California, United States of America
- Committee on Neurobiology, University of Chicago, Chicago, Illinois, United States of America
| | - Stephanie C. Dulawa
- Department of Psychiatry, University of California San Diego, La Jolla, California, United States of America
- * E-mail:
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Wu Y, Li Y, Wu B, Tan C, He X, Xu B, Yu G, Wang H. β-Arrestin2 Inhibits Expression of Inflammatory Cytokines in BEAS-2B Lung Epithelial Cells Treated with Cigarette Smoke Condensate via Inhibition of Autophagy. Cell Physiol Biochem 2018; 50:1270-1285. [PMID: 30355935 DOI: 10.1159/000494586] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Accepted: 10/17/2018] [Indexed: 12/17/2023] Open
Abstract
BACKGROUND/AIMS β-arrestin2 has been shown to have a role in human inflammatory disease. However, the role of β-arrestin2 in cigarette smoke-induced inflammation in the lung remains unknown. The aims of this study were to investigate the effects of β-arrestin2 on cigarette smoke condensate (CSC)-induced expression of inflammatory cytokines in the BEAS-2B human bronchial epithelial cell line in vitro, and the mechanisms involved. METHODS The MTT assay determined cell viability of cultured BEAS-2B cells. Autophagy was assessed by western blot, adenoviral mRFP-GFP-LC3 transfection, and immunofluorescence. The effects of β-arrestin2 shRNA knockdown were studied by western blot and real-time reverse transcription-polymerase chain reaction (RT-PCR). Western blot evaluated the AMPK/mTOR signaling pathway. Levels of inflammatory cytokines, interleukin (IL)-6, IL-8, and MCP-1 were measured in cell culture supernatants by enzyme-linked immunosorbent assay (ELISA). RESULTS CSC suppressed expression of β-arrestin2 in BEAS-2B cells, activated the AMPK/mTOR signaling pathway, increased cell autophagy and the expression of IL-6, IL-8, and MCP-1,pretreatment with the β-arrestin2 biased ligands, propranolol, and ICI118551 reversed these changes. Inhibition of autophagy reduced the expression of inflammatory cytokines following CSC. CONCLUSION In the human bronchial epithelial cell line, BEAS-2B, β-arrestin2 reduced the expression of CSC-induced inflammatory cytokines by inhibiting autophagy, most likely via the AMPK/mTOR signaling pathway.
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Wang Y, Jin L, Song Y, Zhang M, Shan D, Liu Y, Fang M, Lv F, Xiao RP, Zhang Y. β-arrestin 2 mediates cardiac ischemia-reperfusion injury via inhibiting GPCR-independent cell survival signalling. Cardiovasc Res 2018; 113:1615-1626. [PMID: 29016703 DOI: 10.1093/cvr/cvx147] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 08/03/2017] [Indexed: 01/14/2023] Open
Abstract
Aims Ischemic heart disease is a leading cause of morbidity and mortality worldwide. Although timely restoration of coronary blood flow (reperfusion) is the most effective therapeutics of myocardial infarction, reperfusion causes further cardiac damage, i.e. ischemia-reperfusion (I/R) injury. β-arrestins (Arrbs) have been traditionally defined as negative regulators of G protein-coupled receptor (GPCR) signalling, but recent studies have shown that they are essential for G protein-independent, GPCR-mediated biased signalling. Several ligands have been reported to be cardioprotective via Arrbs dependent pathway. However, it is unclear whether Arrbs exert receptor-independent physiological or pathological functions in the heart. Here, we sought to determine whether and how Arrbs play a role in regulating cardiomyocyte viability and myocardial remodelling following I/R injury. Methods and results The expression of β-arrestin 2 (Arrb2), but not β-arrestin 1 (Arrb1), is upregulated in rat hearts subjected to I/R injury, or in cultured neonatal rat cardiomyocytes treated with hypoxia-reoxygenation (H/R) injury. Deficiency of Arrb2 in cultured neonatal rat cardiomyocytes alleviates H/R-induced cardiomyocyte death and Arrb2-/- mice are resistant to myocardial damage caused by I/R injury. In contrast, upregulation of Arrb2 triggers cardiomyocyte death and exaggerates I/R (or H/R)-induced detrimental effects. Mechanically, Arrb2 induces cardiomyocyte death by interacting with the p85 subunit of PI3K, and negatively regulating the formation of p85-PI3K/CaV3 survival complex, thus blocking activation of PI3K-Akt-GSK3β cell survival signalling pathway. Conclusion We define an upregulation of Arrb2 as a pathogenic factor in cardiac I/R injury, and also reveal a novel GPCR-independent mechanism of Arrb2-mediated cell death signalling in the heart.
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Affiliation(s)
- Yimei Wang
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Li Jin
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Ying Song
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Mao Zhang
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Dan Shan
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Yuli Liu
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Meng Fang
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Fengxiang Lv
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Rui-Ping Xiao
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, Peking University, Beijing 100871, China
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Peking University, Beijing 100871, China
| | - Yan Zhang
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, Peking University, Beijing 100871, China
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Riccetti L, Klett D, Ayoub MA, Boulo T, Pignatti E, Tagliavini S, Varani M, Trenti T, Nicoli A, Capodanno F, La Sala GB, Reiter E, Simoni M, Casarini L. Heterogeneous hCG and hMG commercial preparations result in different intracellular signalling but induce a similar long-term progesterone response in vitro. Mol Hum Reprod 2018; 23:685-697. [PMID: 29044421 DOI: 10.1093/molehr/gax047] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 08/12/2017] [Indexed: 12/24/2022] Open
Abstract
STUDY QUESTION Are four urinary hCG/menotropin (hMG) and one recombinant preparation characterized by different molecular features and do they mediate specific intracellular signaling and steroidogenesis? SUMMARY ANSWER hCG and hMG preparations have heterogeneous compositions and mediate preparation-specific cell signaling and early steroidogenesis, although similar progesterone plateau levels are achieved in 24 h-treated human primary granulosa cells in vitro. WHAT IS KNOWN ALREADY hCG is the pregnancy hormone marketed as a drug for ARTs to induce final oocyte maturation and ovulation, and to support FSH action. Several hCG formulations are commercially available, differing in source, purification methods and biochemical composition. STUDY DESIGN, SIZE, DURATION Commercial hCG preparations for ART or research purposes were compared in vitro. PARTICIPANTS/MATERIALS, SETTING, METHODS The different preparations were quantified by immunoassay with calibration against the hCG standard (Fifth IS; NIBSC 07/364). Immunoreactivity patterns, isoelectric points and oligosaccharide contents of hCGs were evaluated using reducing and non-reducing Western blotting, capillary isoelectric-focusing immunoassay and lectin-ELISA, respectively. Functional studies were performed in order to evaluate intracellular and total cAMP, progesterone production and β-arrestin 2 recruitment by ELISA and BRET, in both human primary granulosa lutein cells (hGLC) and luteinizing hormone (LH)/hCG receptor (LHCGR)-transfected HEK293 cells, stimulated by increasing hormone concentrations. Statistical analysis was performed using two-way ANOVA and Bonferroni post-test or Mann-Whitney's U-test as appropriate. MAIN RESULTS AND THE ROLE OF CHANCE Heterogeneous profiles were found among preparations, revealing specific molecular weight patterns (20-75 KDa range), isoelectric points (4.0-9.0 pI range) and lectin binding (P < 0.05; n = 7-10). These drug-specific compositions were linked to different potencies on cAMP production (EC50 1.0-400.0 ng/ml range) and β-arrestin 2 recruitment (EC50 0.03-2.0 μg/ml) in hGLC and transfected HEK293 cells (P < 0.05; n = 3-5). In hGLC, these differences were reflected by preparation-specific 8-h progesterone production although similar plateau levels of progesterone were acheived by 24-h treatment (P ≥ 0.05; n = 3). LARGE SCALE DATA N/A. LIMITATIONS, REASONS FOR CAUTION The biological activity of commercial hCG/hMG preparations is provided in International Units (IU) by in-vivo bioassay and calibration against an International Standard, although it is an unsuitable unit of measure for in-vitro studies. The re-calibration against recombinant hCG,quantified in grams, is based on the assumption that all of the isoforms and glycosylation variants have similar immunoreactivity. WIDER IMPLICATIONS OF THE FINDINGS hCG/hMG preparation-specific cell responses in vitro may be proposed to ART patients affected by peculiar ovarian response, such as that caused by polycystic ovary syndrome. Otherwise, all the preparations available for ART may provide a similar clinical outcome in healthy women. STUDY FUNDING AND COMPETING INTEREST(S) This study was supported by a grant of the Italian Ministry of Education, University and Research (PRIN 2015XCR88M). The authors have no conflict of interest.
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Affiliation(s)
- Laura Riccetti
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, via G. Campi 287, 41125 Modena, Italy
| | - Danièle Klett
- PRC, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France
| | - Mohammed Akli Ayoub
- PRC, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France
- LE STUDIUM® Loire Valley Institute for Advanced Studies, F-45000 Orléans, France
- Biology Department, College of Science, United Arab Emirates University, PO Box 15551, Al Ain, United Arab Emirates
| | - Thomas Boulo
- PRC, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France
| | - Elisa Pignatti
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, via G. Campi 287, 41125 Modena, Italy
- Center for Genomic Research, University of Modena and Reggio Emilia, via G. Campi 287, 41125 Modena, Italy
| | - Simonetta Tagliavini
- Department of Laboratory Medicine and Pathological Anatomy, Azienda USL, NOCSAE, Via P. Giardini 1355, 41126 Modena, Italy
| | - Manuela Varani
- Department of Laboratory Medicine and Pathological Anatomy, Azienda USL, NOCSAE, Via P. Giardini 1355, 41126 Modena, Italy
| | - Tommaso Trenti
- Department of Laboratory Medicine and Pathological Anatomy, Azienda USL, NOCSAE, Via P. Giardini 1355, 41126 Modena, Italy
| | - Alessia Nicoli
- Unit of Obstetrics and Gynecology, IRCCS-Arcispedale Santa Maria Nuova, via Risorgimento 80, 42123 Reggio Emilia, Italy
| | - Francesco Capodanno
- Unit of Obstetrics and Gynecology, IRCCS-Arcispedale Santa Maria Nuova, via Risorgimento 80, 42123 Reggio Emilia, Italy
| | - Giovanni Battista La Sala
- Unit of Obstetrics and Gynecology, IRCCS-Arcispedale Santa Maria Nuova, via Risorgimento 80, 42123 Reggio Emilia, Italy
- Department of Medical and Surgical Sciences for Children and Adults, University of Modena and Reggio Emilia, via del Pozzo 71, 41124 Modena, Italy
| | - Eric Reiter
- PRC, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France
| | - Manuela Simoni
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, via G. Campi 287, 41125 Modena, Italy
- Center for Genomic Research, University of Modena and Reggio Emilia, via G. Campi 287, 41125 Modena, Italy
- Department of Medicine, Endocrinology, Metabolism and Geriatrics, Azienda Ospedaliero-Universitaria di Modena, NOCSAE, Via P. Giardini 1355, 41126 Modena, Italy
| | - Livio Casarini
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, via G. Campi 287, 41125 Modena, Italy
- Center for Genomic Research, University of Modena and Reggio Emilia, via G. Campi 287, 41125 Modena, Italy
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Lin R, Choi YH, Zidar DA, Walker JKL. β-Arrestin-2-Dependent Signaling Promotes CCR4-mediated Chemotaxis of Murine T-Helper Type 2 Cells. Am J Respir Cell Mol Biol 2018; 58:745-755. [PMID: 29361236 PMCID: PMC6002661 DOI: 10.1165/rcmb.2017-0240oc] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 10/10/2017] [Indexed: 12/24/2022] Open
Abstract
Allergic asthma is a complex inflammatory disease that leads to significant healthcare costs and reduction in quality of life. Although many cell types are implicated in the pathogenesis of asthma, CD4+ T-helper cell type 2 (Th2) cells are centrally involved. We previously reported that the asthma phenotype is virtually absent in ovalbumin-sensitized and -challenged mice that lack global expression of β-arrestin (β-arr)-2 and that CD4+ T cells from these mice displayed significantly reduced CCL22-mediated chemotaxis. Because CCL22-mediated activation of CCR4 plays a role in Th2 cell regulation in asthmatic inflammation, we hypothesized that CCR4-mediated migration of CD4+ Th2 cells to the lung in asthma may use β-arr-dependent signaling. To test this hypothesis, we assessed the effect of various signaling inhibitors on CCL22-induced chemotaxis using in vitro-polarized primary CD4+ Th2 cells from β-arr2-knockout and wild-type mice. Our results show, for the first time, that CCL22-induced, CCR4-mediated Th2 cell chemotaxis is dependent, in part, on a β-arr2-dependent signaling pathway. In addition, we show that this chemotactic signaling mechanism involves activation of P-p38 and Rho-associated protein kinase. These findings point to a proinflammatory role for β-arr2-dependent signaling and support β-arr2 as a novel therapeutic target in asthma.
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Affiliation(s)
- Rui Lin
- Duke University Division of Pulmonary Medicine and
| | - Yeon ho Choi
- Duke University Division of Pulmonary Medicine and
| | - David A. Zidar
- Harrington Heart and Vascular Institute, University Hospitals Case Medical Center, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Julia K. L. Walker
- Duke University Division of Pulmonary Medicine and
- Duke University School of Nursing, Duke University, Durham, North Carolina; and
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Shintani Y, Hayata-Takano A, Moriguchi K, Nakazawa T, Ago Y, Kasai A, Seiriki K, Shintani N, Hashimoto H. β-Arrestin1 and 2 differentially regulate PACAP-induced PAC1 receptor signaling and trafficking. PLoS One 2018; 13:e0196946. [PMID: 29734363 PMCID: PMC5937772 DOI: 10.1371/journal.pone.0196946] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Accepted: 04/23/2018] [Indexed: 01/14/2023] Open
Abstract
A pituitary adenylate cyclase-activating polypeptide (PACAP)-specific receptor, PAC1R, is coupled with multiple signal transduction pathways including stimulation of adenylate cyclase, phospholipase C and extracellular-signal regulated kinase (ERK)1/2. PAC1R has been shown to exert its long-lasting and potent signals via β-arrestin1 and β-arrestin2. However, the precise roles of the two β-arrestin isoforms in PACAP-PAC1R signaling remain unclear. Here we examined the interaction between the two β-arrestin isoforms and PAC1R, β-arrestin-dependent PAC1R subcellular localization and ERK1/2 activation. Upon PACAP stimulation, although PAC1R similarly interacted with β-arrestin1 and β-arrestin2 in HEK293T cells, the complex of PAC1R and β-arrestin2 was translocated from the cell surface into cytosol, but that of β-arrestin1 remained in the cell surface regions in HeLa cells and mouse primary cultured neurons. Silencing of β-arrestin2 blocked PACAP-induced PAC1R internalization and ERK1/2 phosphorylation, but silencing of β-arrestin1 increased ERK1/2 phosphorylation. These results show that β-arrestin1 and β-arrestin2 exert differential actions on PAC1R internalization and PAC1R-dependent ERK1/2 activation, and suggest that the two β-arrestin isoforms may be involved in fine and precise tuning of the PAC1R signaling pathways.
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Affiliation(s)
- Yusuke Shintani
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
| | - Atsuko Hayata-Takano
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
- Center for Child Mental Development, United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Suita, Osaka, Japan
- * E-mail: (HS); (AH-T)
| | - Keita Moriguchi
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
| | - Takanobu Nakazawa
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
- Department of Pharmacology, Graduate School of Dentistry, Osaka University, Osaka, Japan
| | - Yukio Ago
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
| | - Atsushi Kasai
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
| | - Kaoru Seiriki
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
- Interdisciplinary Program for Biomedical Sciences, Institute for Academic Initiatives, Osaka University, Suita, Osaka, Japan
| | - Norihito Shintani
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
| | - Hitoshi Hashimoto
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
- Center for Child Mental Development, United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Suita, Osaka, Japan
- Division of Bioscience, Institute for Datability Science, Osaka University, Suita, Osaka, Japan
- * E-mail: (HS); (AH-T)
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36
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Liu Y, Wang Z, Li J, Ban Y, Mao G, Zhang M, Wang M, Liu Y, Zhao B, Shen Q, Xu Q, Wang N. Inhibition of 5-Hydroxytryptamine Receptor 2B Reduced Vascular Restenosis and Mitigated the β-Arrestin2-Mammalian Target of Rapamycin/p70S6K Pathway. J Am Heart Assoc 2018; 7:e006810. [PMID: 29382665 PMCID: PMC5850233 DOI: 10.1161/jaha.117.006810] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 11/16/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND As a monoamine neurotransmitter, 5-hydroxytryptamine (5-HT) or serotonin modulates mood, appetite, and sleep. Besides, 5-HT also has important peripheral functions. 5-HT receptor 2B (5-HT2BR) plays a key role in cardiovascular diseases, such as pulmonary arterial hypertension and cardiac valve disease. Percutaneous intervention has been used to restore blood flow in occlusive vascular disease. However, restenosis remains a significant problem. Herein, we investigated the role of 5-HT2BR in neointimal hyperplasia, a key pathological process in restenosis. METHODS AND RESULTS The expression of 5-HT2BR was upregulated in wire-injured mouse femoral arteries. In addition, BW723C86, a selective 5-HT2BR agonist, promoted the injury response during restenosis. 5-HT and BW723C86 stimulated migration and proliferation of rat aortic smooth muscle cells. Conversely, LY272015, a selective antagonist, attenuated the 5-HT-induced smooth muscle cell migration and proliferation. In vitro study showed that the promigratory effects of 5-HT2BR were mediated through the activation of mammalian target of rapamycin (mTOR)/p70S6K signaling in a β-arrestin2-dependent manner. Inhibition of mammalian target of rapamycin or p70S6K mitigated 5-HT2BR-mediated smooth muscle cell migration. Mice with deficiency of 5-HT2BR showed significantly reduced neointimal formation in wire-injured arteries. CONCLUSIONS These results demonstrated that activation of 5-HT2BR and β-arrestin2-biased downstream signaling are key pathological processes in neointimal formation, and 5-HT2BR may be a potential target for the therapeutic intervention of vascular restenosis.
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MESH Headings
- Animals
- Cell Movement/drug effects
- Cell Proliferation/drug effects
- Cells, Cultured
- Disease Models, Animal
- Femoral Artery/drug effects
- Femoral Artery/enzymology
- Femoral Artery/injuries
- Femoral Artery/pathology
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/enzymology
- Muscle, Smooth, Vascular/injuries
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/enzymology
- Myocytes, Smooth Muscle/pathology
- Neointima
- Organic Chemicals/pharmacology
- Rats
- Receptor, Serotonin, 5-HT2B/drug effects
- Receptor, Serotonin, 5-HT2B/genetics
- Receptor, Serotonin, 5-HT2B/metabolism
- Ribosomal Protein S6 Kinases, 70-kDa/genetics
- Ribosomal Protein S6 Kinases, 70-kDa/metabolism
- Serotonin 5-HT2 Receptor Antagonists/pharmacology
- Signal Transduction/drug effects
- TOR Serine-Threonine Kinases/metabolism
- Vascular Remodeling/drug effects
- Vascular System Injuries/drug therapy
- Vascular System Injuries/enzymology
- Vascular System Injuries/genetics
- Vascular System Injuries/pathology
- beta-Arrestin 2/genetics
- beta-Arrestin 2/metabolism
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Affiliation(s)
- Yahan Liu
- Institute of Cardiovascular Science, Peking University Health Science Center, Beijing, China
| | - Zhipeng Wang
- Institute of Cardiovascular Science, Peking University Health Science Center, Beijing, China
| | - Jing Li
- Institute of Cardiovascular Science, Peking University Health Science Center, Beijing, China
| | - Yiqian Ban
- Institute of Cardiovascular Science, Peking University Health Science Center, Beijing, China
| | - Guangmei Mao
- Institute of Cardiovascular Science, Peking University Health Science Center, Beijing, China
| | - Man Zhang
- Institute of Cardiovascular Science, Peking University Health Science Center, Beijing, China
| | - Mo Wang
- Institute of Cardiovascular Science, Peking University Health Science Center, Beijing, China
| | - Yan Liu
- Institute of Cardiovascular Science, Peking University Health Science Center, Beijing, China
| | - Beilei Zhao
- Institute of Cardiovascular Science, Peking University Health Science Center, Beijing, China
| | - Qiang Shen
- Institute of Cardiovascular Science, Peking University Health Science Center, Beijing, China
| | - Qingbo Xu
- Cardiovascular Division, King's College London King's British Heart Foundation (BHF) Centre, London, United Kingdom
| | - Nanping Wang
- Institute of Cardiovascular Science, Peking University Health Science Center, Beijing, China
- Advanced Institute for Medical Sciences, Dalian Medical University, Dalian, China
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Jiang MP, Xu C, Guo YW, Luo QJ, Li L, Liu HL, Jiang J, Chen HX, Wei XQ. β-arrestin 2 attenuates lipopolysaccharide-induced liver injury via inhibition of TLR4/NF-κB signaling pathway-mediated inflammation in mice. World J Gastroenterol 2018; 24:216-225. [PMID: 29375207 PMCID: PMC5768940 DOI: 10.3748/wjg.v24.i2.216] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 11/03/2017] [Accepted: 11/21/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To study the role and the possible mechanism of β-arrestin 2 in lipopolysaccharide (LPS)-induced liver injury in vivo and in vitro.
METHODS Male β-arrestin 2+/+ and β-arrestin 2-/- C57BL/6J mice were used for in vivo experiments, and the mouse macrophage cell line RAW264.7 was used for in vitro experiments. The animal model was established via intraperitoneal injection of LPS or physiological sodium chloride solution. Blood samples and liver tissues were collected to analyze liver injury and levels of pro-inflammatory cytokines. Cultured cell extracts were collected to analyze the production of pro-inflammatory cytokines and expression of key molecules involved in the TLR4/NF-κB signaling pathway.
RESULTS Compared with wild-type mice, the β-arrestin 2 knockout mice displayed more severe LPS-induced liver injury and significantly higher levels of pro-inflammatory cytokines, including interleukin (IL)-1β, IL-6, tumor necrosis factor (TNF)-α, and IL-10. Compared with the control group, pro-inflammatory cytokines (including IL-1β, IL-6, TNF-α, and IL-10) produced by RAW264.7 cells in the β-arrestin 2 siRNA group were significantly increased at 6 h after treatment with LPS. Further, key molecules involved in the TLR4/NF-κB signaling pathway, including phospho-IκBα and phosho-p65, were upregulated.
CONCLUSION β-arrestin 2 can protect liver tissue from LPS-induced injury via inhibition of TLR4/NF-κB signaling pathway-mediated inflammation.
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Affiliation(s)
- Meng-Ping Jiang
- Department of Digestive Diseases, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong Province, China
| | - Chun Xu
- Department of Digestive Diseases, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong Province, China
- Department of Digestive Diseases, Huizhou Municipal Center Hospital, Huizhou 516002, Guangdong Province, China
| | - Yun-Wei Guo
- Department of Digestive Diseases, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong Province, China
| | - Qian-Jiang Luo
- Department of Digestive Diseases, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong Province, China
| | - Lin Li
- Department of Digestive Diseases, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong Province, China
| | - Hui-Ling Liu
- Department of Digestive Diseases, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong Province, China
| | - Jie Jiang
- Department of Digestive Diseases, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong Province, China
| | - Hui-Xin Chen
- Department of Digestive Diseases, Huizhou Municipal Center Hospital, Huizhou 516002, Guangdong Province, China
| | - Xiu-Qing Wei
- Department of Digestive Diseases, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong Province, China
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Bedini A, Baiula M, Vincelli G, Formaggio F, Lombardi S, Caprini M, Spampinato S. Nociceptin/orphanin FQ antagonizes lipopolysaccharide-stimulated proliferation, migration and inflammatory signaling in human glioblastoma U87 cells. Biochem Pharmacol 2017; 140:89-104. [PMID: 28583844 DOI: 10.1016/j.bcp.2017.05.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 05/31/2017] [Indexed: 01/01/2023]
Abstract
Glioblastoma is among the most aggressive brain tumors and has an exceedingly poor prognosis. Recently, the importance of the tumor microenvironment in glioblastoma cell growth and progression has been emphasized. Toll-like receptor 4 (TLR4) recognizes bacterial lipopolysaccharide (LPS) and endogenous ligands originating from dying cells or the extracellular matrix involved in host defense and in inflammation. G-protein coupled receptors (GPCRs) have gained interest in anti-tumor drug discovery due to the role that they directly or indirectly play by transactivating other receptors, causing cell migration and proliferation. A proteomic analysis showed that the nociceptin receptor (NOPr) is among the GPCRs significantly expressed in glioblastoma cells, including U87 cells. We describe a novel role of the peptide nociceptin (N/OFQ), the endogenous ligand of the NOPr that counteracts cell migration, proliferation and increase in IL-1β mRNA elicited by LPS via TLR4 in U87 glioblastoma cells. Signaling pathways through which N/OFQ inhibits LPS-mediated cell migration and elevation of [Ca2+]i require β-arrestin 2 and are sensitive to TNFR-associated factor 6, c-Src and protein kinase C (PKC). LPS-induced cell proliferation and increase in IL-1β mRNA are counteracted by N/OFQ via β-arrestin 2, PKC and extracellular signal-regulated kinase 1/2; furthermore, the contributions of the transcription factors NF-kB and AP-1 were investigated. Independent of LPS, N/OFQ induces a significant increase in cell apoptosis. Contrary to what was observed in other cell models, a prolonged exposure to this endotoxin did not promote any tolerance of the cellular effects above described, including NOPr down-regulation while N/OFQ loses its inhibitory role.
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Affiliation(s)
- Andrea Bedini
- Department of Pharmacy and Biotechnology, University of Bologna, Irnerio 48, 40126 Bologna, Italy
| | - Monica Baiula
- Department of Pharmacy and Biotechnology, University of Bologna, Irnerio 48, 40126 Bologna, Italy
| | - Gabriele Vincelli
- Department of Pharmacy and Biotechnology, University of Bologna, Irnerio 48, 40126 Bologna, Italy
| | - Francesco Formaggio
- Department of Pharmacy and Biotechnology, University of Bologna, Irnerio 48, 40126 Bologna, Italy
| | - Sara Lombardi
- Department of Pharmacy and Biotechnology, University of Bologna, Irnerio 48, 40126 Bologna, Italy
| | - Marco Caprini
- Department of Pharmacy and Biotechnology, University of Bologna, Irnerio 48, 40126 Bologna, Italy
| | - Santi Spampinato
- Department of Pharmacy and Biotechnology, University of Bologna, Irnerio 48, 40126 Bologna, Italy.
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Shi Q, Li M, Mika D, Fu Q, Kim S, Phan J, Shen A, Vandecasteele G, Xiang YK. Heterologous desensitization of cardiac β-adrenergic signal via hormone-induced βAR/arrestin/PDE4 complexes. Cardiovasc Res 2017; 113:656-670. [PMID: 28339772 PMCID: PMC5852637 DOI: 10.1093/cvr/cvx036] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 10/20/2017] [Accepted: 02/17/2017] [Indexed: 12/22/2022] Open
Abstract
AIMS Cardiac β-adrenergic receptor (βAR) signalling is susceptible to heterologous desensitization by different neurohormonal stimuli in clinical conditions associated with heart failure. We aim to examine the underlying mechanism of cross talk between βARs and a set of G-protein coupled receptors (GPCRs) activated by hormones/agonists. METHODS AND RESULTS Rat ventricular cardiomyocytes were used to determine heterologous phosphorylation of βARs under a series of GPCR agonists. Activation of Gs-coupled dopamine receptor, adenosine receptor, relaxin receptor and prostaglandin E2 receptor, and Gq-coupled α1 adrenergic receptor and angiotensin II type 1 receptor promotes phosphorylation of β1AR and β2AR at putative protein kinase A (PKA) phosphorylation sites; but activation of Gi-coupled α2 adrenergic receptor and activation of protease-activated receptor does not. The GPCR agonists that promote β2AR phosphorylation effectively inhibit βAR agonist isoproterenol-induced PKA phosphorylation of phospholamban and contractile function in ventricular cardiomyocytes. Heterologous GPCR stimuli have minimal to small effect on isoproterenol-induced β2AR activation and G-protein coupling for cyclic adenosine monophosphate (cAMP) production. However, these GPCR stimuli significantly promote phosphorylation of phosphodiesterase 4D (PDE4D), and recruit PDE4D to the phosphorylated β2AR in a β-arrestin 2 dependent manner without promoting β2AR endocytosis. The increased binding between β2AR and PDE4D effectively hydrolyzes cAMP signal generated by subsequent stimulation with isoproterenol. Mutation of PKA phosphorylation sites in β2AR, inhibition of PDE4, or genetic ablation of PDE4D or β-arrestin 2 abolishes this heterologous inhibitory effect. Ablation of β-arrestin 2 or PDE4D gene also rescues β-adrenergic stimuli-induced myocyte contractile function. CONCLUSIONS These data reveal essential roles of β-arrestin 2 and PDE4D in a common mechanism for heterologous desensitization of cardiac βARs under hormonal stimulation, which is associated with impaired cardiac function during the development of pathophysiological conditions.
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MESH Headings
- Animals
- Cells, Cultured
- Cyclic AMP-Dependent Protein Kinases/metabolism
- Cyclic Nucleotide Phosphodiesterases, Type 4/genetics
- Cyclic Nucleotide Phosphodiesterases, Type 4/metabolism
- Hormones/pharmacology
- Male
- Mice, Knockout
- Myocardial Contraction/drug effects
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/metabolism
- Phosphorylation
- Protein Kinase C/metabolism
- Rats
- Receptor Cross-Talk
- Receptors, Adrenergic, beta-1/drug effects
- Receptors, Adrenergic, beta-1/genetics
- Receptors, Adrenergic, beta-1/metabolism
- Receptors, Adrenergic, beta-2/drug effects
- Receptors, Adrenergic, beta-2/genetics
- Receptors, Adrenergic, beta-2/metabolism
- Signal Transduction/drug effects
- Time Factors
- beta-Arrestin 1/genetics
- beta-Arrestin 1/metabolism
- beta-Arrestin 2/genetics
- beta-Arrestin 2/metabolism
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Affiliation(s)
- Qian Shi
- Department of Pharmacology, University of California at Davis, Davis, CA 95616, USA
| | - Minghui Li
- Department of Pharmacology, University of California at Davis, Davis, CA 95616, USA
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210001, China
| | - Delphine Mika
- INSERM UMR-S 1180, Univ. Paris-Sud, Université Paris-Saclay, Châtenay-Malabry, France
| | - Qin Fu
- Department of Pharmacology, Tongji Medical College, Huazhong University of Technology and Sciences, Wuhan 430030, China
| | - Sungjin Kim
- Department of Pharmacology, University of California at Davis, Davis, CA 95616, USA
| | - Jason Phan
- Department of Pharmacology, University of California at Davis, Davis, CA 95616, USA
| | - Ao Shen
- Department of Pharmacology, University of California at Davis, Davis, CA 95616, USA
| | | | - Yang K. Xiang
- Department of Pharmacology, University of California at Davis, Davis, CA 95616, USA
- VA Northern California Health care system, Mather, CA 95655, USA
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Noh H, Yu MR, Kim HJ, Lee JH, Park BW, Wu IH, Matsumoto M, King GL. Beta 2-adrenergic receptor agonists are novel regulators of macrophage activation in diabetic renal and cardiovascular complications. Kidney Int 2017; 92:101-113. [PMID: 28396116 DOI: 10.1016/j.kint.2017.02.013] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 02/06/2017] [Accepted: 02/09/2017] [Indexed: 01/01/2023]
Abstract
Macrophage activation is increased in diabetes and correlated with the onset and progression of vascular complications. To identify drugs that could inhibit macrophage activation, we developed a cell-based assay and screened a 1,040 compound library for anti-inflammatory effects. Beta2-adrenergic receptor (β2AR) agonists were identified as the most potent inhibitors of phorbol myristate acetate-induced tumor necrosis factor-α production in rat bone marrow macrophages. In peripheral blood mononuclear cells isolated from streptozotocin-induced diabetic rats, β2AR agonists inhibited diabetes-induced tumor necrosis factor-α production, which was prevented by co-treatment with a selective β2AR blocker. To clarify the underlying mechanisms, THP-1 cells and bone marrow macrophages were exposed to high glucose. High glucose reduced β-arrestin2, a negative regulator of NF-κB activation, and its interaction with IκBα. This subsequently enhanced phosphorylation of IκBα and activation of NF-κB. The β2AR agonists enhanced β-arrestin2 and its interaction with IκBα, leading to downregulation of NF-κB. A siRNA specific for β-arrestin2 reversed β2AR agonist-mediated inhibition of NF-κB activation and inflammatory cytokine production. Treatment of Zucker diabetic fatty rats with a β2AR agonist for 12 weeks attenuated monocyte activation as well as pro-inflammatory and pro-fibrotic responses in the kidneys and heart. Thus, β2AR agonists might have protective effects against diabetic renal and cardiovascular complications.
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MESH Headings
- Adrenergic beta-2 Receptor Agonists/pharmacology
- Adrenergic beta-2 Receptor Antagonists/pharmacology
- Animals
- Anti-Inflammatory Agents/pharmacology
- Diabetes Mellitus, Experimental/chemically induced
- Diabetes Mellitus, Experimental/drug therapy
- Diabetes Mellitus, Experimental/genetics
- Diabetes Mellitus, Experimental/metabolism
- Diabetic Cardiomyopathies/chemically induced
- Diabetic Cardiomyopathies/genetics
- Diabetic Cardiomyopathies/metabolism
- Diabetic Cardiomyopathies/prevention & control
- Diabetic Nephropathies/chemically induced
- Diabetic Nephropathies/genetics
- Diabetic Nephropathies/metabolism
- Diabetic Nephropathies/prevention & control
- Fibrosis
- Humans
- Kidney/drug effects
- Kidney/metabolism
- Kidney/pathology
- Macrophage Activation/drug effects
- Macrophages/drug effects
- Macrophages/metabolism
- Male
- Myocardium/metabolism
- Myocardium/pathology
- NF-KappaB Inhibitor alpha/metabolism
- NF-kappa B/metabolism
- Phosphorylation
- Protein Kinase C/metabolism
- RNA Interference
- Rats, Sprague-Dawley
- Rats, Zucker
- Receptors, Adrenergic, beta-2/drug effects
- Receptors, Adrenergic, beta-2/genetics
- Receptors, Adrenergic, beta-2/metabolism
- Streptozocin
- THP-1 Cells
- Time Factors
- Transfection
- Tumor Necrosis Factor-alpha/metabolism
- beta-Arrestin 2/genetics
- beta-Arrestin 2/metabolism
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Affiliation(s)
- Hyunjin Noh
- Department of Internal Medicine, Soon Chun Hyang University, Seoul, Korea; Hyonam Kidney Laboratory, Soon Chun Hyang University, Seoul, Korea; Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA.
| | - Mi Ra Yu
- Hyonam Kidney Laboratory, Soon Chun Hyang University, Seoul, Korea
| | - Hyun Joo Kim
- Hyonam Kidney Laboratory, Soon Chun Hyang University, Seoul, Korea
| | - Ji Hye Lee
- Hyonam Kidney Laboratory, Soon Chun Hyang University, Seoul, Korea
| | - Byoung-Won Park
- Department of Internal Medicine, Soon Chun Hyang University, Seoul, Korea
| | - I-Hsien Wu
- Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Motonobu Matsumoto
- Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - George L King
- Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA.
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41
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Cao YJ, Zhou YJ, He XZ, Zhou CX, Cui L, Zhuang QF, Xu RF. Overexpression of β-arrestin2 induces G1-phase cell cycle arrest and suppresses tumorigenicity in renal cell carcinoma. Eur Rev Med Pharmacol Sci 2017; 21:1729-1737. [PMID: 28485809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE The objective of this study was to investigate the role of β-arrestin2 in the proliferation, migration, apoptosis, cell cycle and clone formation of renal cell carcinoma (RCC) cell lines and to explore the possible mechanism of β-arrestin2 in RCC invasion and metastasis to find a new therapeutic target. MATERIALS AND METHODS Cell proliferation, migration, apoptosis, cell cycle and clone formation were analyzed after RCC cell lines (786-0 and CaKi) and transfected with β-arrestin2 overexpression plasmid. Using small interfering RNA (siRNA) interference technology abrogates β-arrestin2 overexpression, and changes in cell proliferation, migration, apoptosis, cell cycle and clone formation were analyzed. The expression levels of total IkBa, IkBa phosphorylation (P-IkBa) and NFkB P65 in 786-0 cells were examined after transfection with β-arrestin2 overexpression plasmid to explore the mechanism of β-arrestin2. RESULTS After transfection with β-arrestin2 overexpression plasmid, the abilities of proliferation, migration, and cloning formation in 786-0 and CaKi cells decreased significantly, the apoptosis rate increased significantly, and the cell cycles were blocked in the G1 phase. After siRNA reduced the expression of β-arrestin2, the abilities to proceed through cell proliferation, migration, apoptosis, the cell cycle and clone formation were enhanced. The P-IkBa level in 786-0 cells decreased significantly after transfection, while the expression of P-IkBa in the control group remained high. The expression of NFkB P65 was high in the control group and low in the transfection group. CONCLUSIONS The overexpression of β-arrestin2 can inhibit the growth of RCC cells in vitro, and β-arrestin2 acts as a tumor suppressor gene in RCC. The main mechanism may directly suppress the phosphorylation of IkBa and indirectly suppress NFkB activation. Thus, β-arrestin2 is expected to be an important marker of RCC prognosis and a new therapeutic target.
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Affiliation(s)
- Y-J Cao
- Department of Urology, the Third Affiliated Hospital of Soochow University, Changzhou, China.
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42
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Wang J, Xu W, Zhong T, Song Z, Zou Y, Ding Z, Guo Q, Dong X, Zou W. miR-365 targets β-arrestin 2 to reverse morphine tolerance in rats. Sci Rep 2016; 6:38285. [PMID: 27922111 PMCID: PMC5138852 DOI: 10.1038/srep38285] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 11/07/2016] [Indexed: 01/08/2023] Open
Abstract
Morphine tolerance is a challenging clinical problem that limits its clinical application in pain treatment. Non-coding microRNAs (miRNAs) modulate gene expression in a post transcriptional manner, and their dysregulation causes various diseases. However, the significance of miRNAs in morphine tolerance is still poorly understood. In the present study, we hypothesized that microRNA-365 (miR-365) is a key functional small RNA that reverses morphine tolerance through regulation of β-arrestin 2 in rats. Here, microarray analysis and quantitative real-time PCR showed that miR-365 was robustly decreased in the spinal cord after chronic morphine administration. In situ hybridization and immunochemistry double staining showed that miR-365 was expressed in neurons of the spinal cord. We identified β-arrestin 2 as the target gene of miR-365 by bioinformatics analysis and luciferase reporter assay. The data showed that overexpression of miR-365 prevented and reversed established morphine tolerance, and increased expression of miR-365 caused a decrease in expression of β-arrestin 2 protein. miR-365 downregulation is involved in the development and maintenance of morphine tolerance through regulation of β-arrestin 2, and miR-365 upregulation provides a promising and novel approach for treatment of morphine tolerance.
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Affiliation(s)
- Jian Wang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Wei Xu
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Tao Zhong
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Zongbin Song
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Yu Zou
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Zhuofeng Ding
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Qulian Guo
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Xinzhong Dong
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University, School of Medicine, Baltimore, Maryland 21205, USA
- Howard Hughes Medical Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
| | - Wangyuan Zou
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
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43
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Sullivan LC, Chavera TS, Jamshidi RJ, Berg KA, Clarke WP. Constitutive Desensitization of Opioid Receptors in Peripheral Sensory Neurons. J Pharmacol Exp Ther 2016; 359:411-419. [PMID: 27660244 PMCID: PMC5118646 DOI: 10.1124/jpet.116.232835] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 09/21/2016] [Indexed: 12/18/2022] Open
Abstract
Opioid receptors expressed by peripheral pain-sensing neurons are functionally inactive for antinociceptive signaling under most basal conditions; however, tissue damage or exposure to inflammatory mediators (e.g., bradykinin) converts these receptors from a nonresponsive state to a functionally competent state. Here we tested the hypothesis that the basal, nonresponsive state of the mu- and delta-opioid receptors (MOR and DOR, respectively) is the result of constitutive receptor activity that activates desensitization mechanisms, resulting in MOR and DOR receptor systems that are constitutively desensitized. Consistent with our previous findings, under basal conditions, neither the MOR agonist [d-Ala2,N-MePhe4,Gly-ol5]-enkephalin nor the DOR agonist [d-Pen2,5]-enkephalin, inhibited prostaglandin E2 (PGE2)-stimulated cAMP accumulation in peripheral sensory neurons in culture (ex vivo) or inhibited PGE2-stimulated thermal allodynia in the rat hind paw in vivo. Prolonged treatment with naloxone induced MOR and DOR responsiveness both in vivo and ex vivo to a similar magnitude as that produced by bradykinin. Also similar to bradykinin, the effect of naloxone persisted for 60 minutes after washout of the ligand. By contrast, prolonged treatment with 6β-naltrexol, did not induce functional competence of MOR or DOR but blocked the effect of naloxone. Treatment with siRNA for β-arrestin-2, but not β-arrestin-1, also induced MOR and DOR functional competence in cultured peripheral sensory neurons. These data suggest that the lack of responsiveness of MOR and DOR to agonist for antinociceptive signaling in peripheral sensory neurons is due to constitutive desensitization that is likely mediated by β-arrestin-2.
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MESH Headings
- Animals
- Bradykinin/pharmacology
- Drug Inverse Agonism
- Gene Expression Regulation/drug effects
- Gene Silencing
- Male
- Naloxone/pharmacology
- Nociception/drug effects
- RNA, Small Interfering/genetics
- Rats
- Rats, Sprague-Dawley
- Receptors, Opioid, delta/agonists
- Receptors, Opioid, delta/metabolism
- Receptors, Opioid, mu/agonists
- Receptors, Opioid, mu/metabolism
- Sensory Receptor Cells/drug effects
- Sensory Receptor Cells/metabolism
- beta-Arrestin 2/deficiency
- beta-Arrestin 2/genetics
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Affiliation(s)
- Laura C Sullivan
- Department of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - Teresa S Chavera
- Department of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - Raehannah J Jamshidi
- Department of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - Kelly A Berg
- Department of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - William P Clarke
- Department of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, Texas
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44
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Wang Q, Liu Y, Fu Q, Xu B, Zhang Y, Kim S, Tan R, Barbagallo F, West T, Anderson E, Wei W, Abel ED, Xiang YK. Inhibiting Insulin-Mediated β2-Adrenergic Receptor Activation Prevents Diabetes-Associated Cardiac Dysfunction. Circulation 2016; 135:73-88. [PMID: 27815373 DOI: 10.1161/circulationaha.116.022281] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 10/13/2016] [Indexed: 12/31/2022]
Abstract
BACKGROUND Type 2 diabetes mellitus (DM) and obesity independently increase the risk of heart failure by incompletely understood mechanisms. We propose that hyperinsulinemia might promote adverse consequences in the hearts of subjects with type-2 DM and obesity. METHODS High-fat diet feeding was used to induce obesity and DM in wild-type mice or mice lacking β2-adrenergic receptor (β2AR) or β-arrestin2. Wild-type mice fed with high-fat diet were treated with a β-blocker carvedilol or a GRK2 (G-protein-coupled receptor kinase 2) inhibitor. We examined signaling and cardiac contractile function. RESULTS High-fat diet feeding selectively increases the expression of phosphodiesterase 4D (PDE4D) in mouse hearts, in concert with reduced protein kinase A phosphorylation of phospholamban, which contributes to systolic and diastolic dysfunction. The expression of PDE4D is also elevated in human hearts with DM. The induction of PDE4D expression is mediated by an insulin receptor, insulin receptor substrate, and GRK2 and β-arrestin2-dependent transactivation of a β2AR-extracellular regulated protein kinase signaling cascade. Thus, pharmacological inhibition of β2AR or GRK2, or genetic deletion of β2AR or β-arrestin2, all significantly attenuate insulin-induced phosphorylation of extracellular regulated protein kinase and PDE4D induction to prevent DM-related contractile dysfunction. CONCLUSIONS These studies elucidate a novel mechanism by which hyperinsulinemia contributes to heart failure by increasing PDE4D expression and identify β2AR or GRK2 as plausible therapeutic targets for preventing or treating heart failure in subjects with type 2 DM.
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MESH Headings
- Animals
- Carbazoles/pharmacology
- Carvedilol
- Cells, Cultured
- Cyclic Nucleotide Phosphodiesterases, Type 4/genetics
- Cyclic Nucleotide Phosphodiesterases, Type 4/metabolism
- Diabetes Mellitus, Type 2/complications
- Diet, High-Fat
- Extracellular Signal-Regulated MAP Kinases/metabolism
- G-Protein-Coupled Receptor Kinase 2/antagonists & inhibitors
- G-Protein-Coupled Receptor Kinase 2/metabolism
- Heart Failure/etiology
- Humans
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Myocardial Contraction/drug effects
- Myocardium/metabolism
- Myocytes, Cardiac/cytology
- Myocytes, Cardiac/metabolism
- Obesity/complications
- Propanolamines/pharmacology
- Receptors, Adrenergic, beta-2/deficiency
- Receptors, Adrenergic, beta-2/genetics
- Signal Transduction
- Vasodilator Agents/pharmacology
- beta-Arrestin 2/deficiency
- beta-Arrestin 2/genetics
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Affiliation(s)
- Qingtong Wang
- Department of Pharmacology, University of California at Davis, CA 95616, USA
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China
| | - Yongming Liu
- Department of Pharmacology, University of California at Davis, CA 95616, USA
- Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200000, China
| | - Qin Fu
- Department of Pharmacology, University of California at Davis, CA 95616, USA
- Department of Pharmacology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Bing Xu
- Department of Pharmacology, University of California at Davis, CA 95616, USA
| | - Yuan Zhang
- Department of Medicine, Division of Endocrinology and Metabolism and Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA 52242, USA
| | - Sungjin Kim
- Department of Pharmacology, University of California at Davis, CA 95616, USA
| | - Ruensern Tan
- Department of Pharmacology, University of California at Davis, CA 95616, USA
| | - Federica Barbagallo
- Department of Pharmacology, University of California at Davis, CA 95616, USA
| | - Toni West
- Department of Pharmacology, University of California at Davis, CA 95616, USA
| | - Ethan Anderson
- Department of Pharmacology and Toxicology, East Carolina University, Greenville, NC 27834, USA
| | - Wei Wei
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, China
| | - E Dale Abel
- Department of Medicine, Division of Endocrinology and Metabolism and Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA 52242, USA
| | - Yang K Xiang
- Department of Pharmacology, University of California at Davis, CA 95616, USA
- VA Northern California Health Care System, Mather, CA 95655, USA
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45
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Hopkins MM, Liu Z, Meier KE. Positive and Negative Cross-Talk between Lysophosphatidic Acid Receptor 1, Free Fatty Acid Receptor 4, and Epidermal Growth Factor Receptor in Human Prostate Cancer Cells. J Pharmacol Exp Ther 2016; 359:124-33. [PMID: 27474750 PMCID: PMC5034703 DOI: 10.1124/jpet.116.233379] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 07/22/2016] [Indexed: 12/22/2022] Open
Abstract
Lysophosphatidic acid (LPA) is a lipid mediator that mediates cellular effects via G protein-coupled receptors (GPCRs). Epidermal growth factor (EGF) is a peptide that acts via a receptor tyrosine kinase. LPA and EGF both induce proliferation of prostate cancer cells and can transactivate each other's receptors. The LPA receptor LPA1 is particularly important for LPA response in human prostate cancer cells. Previous work in our laboratory has demonstrated that free fatty acid 4 (FFA4), a GPCR activated by ω-3 fatty acids, inhibits responses to both LPA and EGF in these cells. One potential mechanism for the inhibition involves negative interactions between FFA4 and LPA1, thereby suppressing responses to EGF that require LPA1 In the current study, we examined the role of LPA1 in mediating EGF and FFA4 agonist responses in two human prostate cancer cell lines, DU145 and PC-3. The results show that an LPA1-selective antagonist inhibits proliferation and migration to both LPA and EGF. Knockdown of LPA1 expression, using silencing RNA, blocks responses to LPA and significantly inhibits responses to EGF. The partial response to EGF that is observed after LPA1 knockdown is not inhibited by FFA4 agonists. Finally, the role of arrestin-3, a GPCR-binding protein that mediates many actions of activated GPCRs, was tested. Knockdown of arrestin-3 completely inhibits responses to both LPA and EGF in prostate cancer cells. Taken together, these results suggest that LPA1 plays a critical role in EGF responses and that FFA4 agonists inhibit proliferation by suppressing positive cross-talk between LPA1 and the EGF receptor.
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Affiliation(s)
- Mandi M Hopkins
- Department of Pharmaceutical Sciences, College of Pharmacy, Washington State University, Spokane, Washington
| | - Ze Liu
- Department of Pharmaceutical Sciences, College of Pharmacy, Washington State University, Spokane, Washington
| | - Kathryn E Meier
- Department of Pharmaceutical Sciences, College of Pharmacy, Washington State University, Spokane, Washington
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