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Pelletier OB, Brunori G, Wang Y, Robishaw JD. Post-transcriptional regulation and subcellular localization of G-protein γ7 subunit: implications for striatal function and behavioral responses to cocaine. Front Neuroanat 2024; 18:1394659. [PMID: 38764487 PMCID: PMC11100332 DOI: 10.3389/fnana.2024.1394659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 04/17/2024] [Indexed: 05/21/2024] Open
Abstract
The striatal D1 dopamine receptor (D1R) and A2a adenosine receptor (A2aR) signaling pathways play important roles in drug-related behaviors. These receptors activate the Golf protein comprised of a specific combination of αolfβ2γ7 subunits. During assembly, the γ7 subunit sets the cellular level of the Golf protein. In turn, the amount of Golf protein determines the collective output from both D1R and A2aR signaling pathways. This study shows the Gng7 gene encodes multiple γ7 transcripts differing only in their non-coding regions. In striatum, Transcript 1 is the predominant isoform. Preferentially expressed in the neuropil, Transcript 1 is localized in dendrites where it undergoes post-transcriptional regulation mediated by regulatory elements in its 3' untranslated region that contribute to translational suppression of the γ7 protein. Earlier studies on gene-targeted mice demonstrated loss of γ7 protein disrupts assembly of the Golf protein. In the current study, morphological analysis reveals the loss of the Golf protein is associated with altered dendritic morphology of medium spiny neurons. Finally, behavioral analysis of conditional knockout mice with cell-specific deletion of the γ7 protein in distinct populations of medium spiny neurons reveals differential roles of the Golf protein in mediating behavioral responses to cocaine. Altogether, these findings provide a better understanding of the regulation of γ7 protein expression, its impact on Golf function, and point to a new potential target and mechanisms for treating addiction and related disorders.
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Affiliation(s)
- Oliver B. Pelletier
- Department of Biomedical Science, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, United States
| | - Gloria Brunori
- Department of Biomedical Science, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, United States
| | - Yingcai Wang
- Department of Biomedical Science, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, United States
| | - Janet D. Robishaw
- Department of Biomedical Science, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, United States
- Department of Comparative, Diagnostic, and Population Medicine, College of Veterinary Medicine, University of Florida, Gainesville, FL, United States
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2
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Occhipinti C, La Russa R, Iacoponi N, Lazzari J, Costantino A, Di Fazio N, Del Duca F, Maiese A, Fineschi V. miRNAs and Substances Abuse: Clinical and Forensic Pathological Implications: A Systematic Review. Int J Mol Sci 2023; 24:17122. [PMID: 38069445 PMCID: PMC10707252 DOI: 10.3390/ijms242317122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/17/2023] [Accepted: 11/28/2023] [Indexed: 12/18/2023] Open
Abstract
Substance addiction is a chronic and relapsing brain disorder characterized by compulsive seeking and continued substance use, despite adverse consequences. The high prevalence and social burden of addiction are indisputable; however, the available intervention is insufficient. The modulation of gene expression and aberrant adaptation of neural networks are attributed to the changes in brain functions under repeated exposure to addictive substances. Considerable studies have demonstrated that miRNAs are strong modulators of post-transcriptional gene expression in substance addiction. The emerging role of microRNA (miRNA) provides new insights into many biological and pathological processes in the central nervous system: their variable expression in different regions of the brain and tissues may play a key role in regulating the pathophysiological events of addiction. This work provides an overview of the current literature on miRNAs involved in addiction, evaluating their impaired expression and regulatory role in neuroadaptation and synaptic plasticity. Clinical implications of such modulatory capacities will be estimated. Specifically, it will evaluate the potential diagnostic role of miRNAs in the various stages of drug and substance addiction. Future perspectives about miRNAs as potential novel therapeutic targets for substance addiction and abuse will also be provided.
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Affiliation(s)
- Carla Occhipinti
- Department of Surgical Pathology, Medical, Molecular and Critical Area, Institute of Legal Medicine, University of Pisa, 56126 Pisa, Italy; (C.O.); (N.I.); (J.L.); (A.C.)
| | - Raffaele La Russa
- Department of Clinical Medicine, Public Health, Life Sciences, and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
| | - Naomi Iacoponi
- Department of Surgical Pathology, Medical, Molecular and Critical Area, Institute of Legal Medicine, University of Pisa, 56126 Pisa, Italy; (C.O.); (N.I.); (J.L.); (A.C.)
| | - Julia Lazzari
- Department of Surgical Pathology, Medical, Molecular and Critical Area, Institute of Legal Medicine, University of Pisa, 56126 Pisa, Italy; (C.O.); (N.I.); (J.L.); (A.C.)
| | - Andrea Costantino
- Department of Surgical Pathology, Medical, Molecular and Critical Area, Institute of Legal Medicine, University of Pisa, 56126 Pisa, Italy; (C.O.); (N.I.); (J.L.); (A.C.)
| | - Nicola Di Fazio
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Sapienza University of Rome, Viale Regina Elena 336, 00161 Rome, Italy; (N.D.F.); (F.D.D.); (V.F.)
| | - Fabio Del Duca
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Sapienza University of Rome, Viale Regina Elena 336, 00161 Rome, Italy; (N.D.F.); (F.D.D.); (V.F.)
| | - Aniello Maiese
- Department of Surgical Pathology, Medical, Molecular and Critical Area, Institute of Legal Medicine, University of Pisa, 56126 Pisa, Italy; (C.O.); (N.I.); (J.L.); (A.C.)
| | - Vittorio Fineschi
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Sapienza University of Rome, Viale Regina Elena 336, 00161 Rome, Italy; (N.D.F.); (F.D.D.); (V.F.)
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Abstract
Most proteins receive an acetyl group at the N terminus while in their nascency as the result of modification by co-translationally acting N-terminal acetyltransferases (NATs). The N-terminal acetyl group can influence several aspects of protein functionality. From studies of NAT-lacking cells, it is evident that several cellular processes are affected by this modification. More recently, an increasing number of genetic cases have demonstrated that N-terminal acetylation has crucial roles in human physiology and pathology. In this Cell Science at a Glance and the accompanying poster, we provide an overview of the human NAT enzymes and their properties, substrate coverage, cellular roles and connections to human disease.
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Affiliation(s)
- Henriette Aksnes
- Department of Biomedicine, University of Bergen, 5009 Bergen, Norway
| | - Nina McTiernan
- Department of Biomedicine, University of Bergen, 5009 Bergen, Norway
| | - Thomas Arnesen
- Department of Biomedicine, University of Bergen, 5009 Bergen, Norway
- Department of Biological Sciences, University of Bergen, 5009 Bergen, Norway
- Department of Surgery, Haukeland University Hospital, 5009 Bergen, Norway
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4
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Colom-Rocha C, Bis-Humbert C, García-Fuster MJ. Evaluating signs of hippocampal neurotoxicity induced by a revisited paradigm of voluntary ethanol consumption in adult male and female Sprague-Dawley rats. Pharmacol Rep 2023; 75:320-330. [PMID: 36807777 DOI: 10.1007/s43440-023-00464-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 02/23/2023]
Abstract
BACKGROUND Binge alcohol drinking is considered a prominent risk factor for the development of alcohol-use disorders, and could be model in rodents through the standard two-bottle preference choice test. The goal was to recreate an intermittent use of alcohol during 3 consecutive days each week to ascertain its potential impact on hippocampal neurotoxicity (neurogenesis and other neuroplasticity markers), and including sex as a biological variable, given the well-known sex differences in alcohol consumption. METHODS Ethanol access was granted to adult Sprague-Dawley rats for 3 consecutive days per week, followed by 4 days of withdrawal, during 6 weeks, mimicking the most common pattern of intake in people, drinking over the weekends in an intensive manner. Hippocampal samples were collected to evaluate signs of neurotoxicity. RESULTS Female rats consumed significantly more ethanol than males, although intake did not escalate over time. Ethanol preference levels remained below 40% over time and did not differ between sexes. Moderate signs of ethanol neurotoxicity were observed in hippocampus at the level of decreased neuronal progenitors (NeuroD + cells), and these effects were independent of sex. No other signs of neurotoxicity were induced by ethanol voluntary consumption when measured through several key cell fate markers (i.e., FADD, Cyt c, Cdk5, NF-L) by western blot analysis. CONCLUSIONS Overall, the present results suggest that even though we modeled a situation where no escalation in ethanol intake occurred across time, mild signs of neurotoxicity emerged, suggesting that even the use of ethanol during adulthood in a recreational way could lead to certain brain harm.
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Affiliation(s)
- Carles Colom-Rocha
- IUNICS, University of the Balearic Islands, Cra. de Valldemossa Km 7.5, 07122, Palma, Spain.,Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain
| | - Cristian Bis-Humbert
- IUNICS, University of the Balearic Islands, Cra. de Valldemossa Km 7.5, 07122, Palma, Spain.,Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain.,Psychobiology of Drug Addiction, Neurocentre Magendie, INSERM U1215, Bordeaux, France
| | - M Julia García-Fuster
- IUNICS, University of the Balearic Islands, Cra. de Valldemossa Km 7.5, 07122, Palma, Spain. .,Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain.
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Karabegović I, Abozaid Y, Maas SCE, Labrecque J, Bos D, De Knegt RJ, Ikram MA, Voortman T, Ghanbari M. Plasma MicroRNA Signature of Alcohol Consumption: The Rotterdam Study. J Nutr 2022; 152:2677-2688. [PMID: 36130258 PMCID: PMC9839997 DOI: 10.1093/jn/nxac216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/16/2022] [Accepted: 09/13/2022] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND MicroRNAs (miRNAs) represent a class of noncoding RNAs that regulate gene expression and are implicated in the pathogenesis of different diseases. Alcohol consumption might affect the expression of miRNAs, which in turn could play a role in risk of diseases. OBJECTIVES We investigated whether plasma concentrations of miRNAs are altered by alcohol consumption. Given the existing evidence showing the link between alcohol and liver diseases, we further explored the extent to which these associations are mediated by miRNAs. METHODS Profiling of plasma miRNAs was conducted using the HTG EdgeSeq miRNA Whole Transcriptome Assay in 1933 participants of the Rotterdam Study. Linear regression was implemented to explore the link between alcohol consumption (glasses/d) and miRNA concentrations, adjusted for age, sex, cohort, BMI, and smoking. Sensitivity analysis for alcohol categories (nondrinkers, light drinkers, and heavy drinkers) was performed, where light drinkers corresponded to 0-2 glasses/d in men and 0-1 glasses/d in women, and heavy drinkers to >2 glasses/d in men and >1 glass/d in women. Moreover, we utilized the alcohol-associated miRNAs to explore their potential mediatory role between alcohol consumption and liver-related traits. Finally, we retrieved putative target genes of identified miRNAs to gain an understanding of the molecular pathways concerning alcohol consumption. RESULTS Plasma concentrations of miR-193b-3p, miR-122-5p, miR-3937, and miR-4507 were significantly associated with alcohol consumption surpassing the Bonferroni-corrected P < 8.46 × 10-5. The top significant association was observed for miR-193b-3p (β = 0.087, P = 2.90 × 10-5). Furthermore, a potential mediatory role of miR-3937 and miR-122-5p was observed between alcohol consumption and liver traits. Pathway analysis of putative target genes revealed involvement in biological regulation and cellular processes. CONCLUSIONS This study indicates that alcohol consumption is associated with plasma concentrations of 4 miRNAs. We outline a potential mediatory role of 2 alcohol-associated miRNAs (miR-3937 and miR-122-5p), laying the groundwork for further exploration of miRNAs as potential mediators between lifestyle factors and disease development.
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Affiliation(s)
- Irma Karabegović
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Yasir Abozaid
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Silvana C E Maas
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands,Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain
| | - Jeremy Labrecque
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Daniel Bos
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands,Department of Radiology and Nuclear Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Robert J De Knegt
- Department of Gastroenterology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - M Arfan Ikram
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Trudy Voortman
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands,Division of Human Nutrition and Health, Wageningen University & Research, Wageningen, The Netherlands
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Zhao Y, Qin F, Han S, Li S, Zhao Y, Wang H, Tian J, Cen X. MicroRNAs in drug addiction: Current status and future perspectives. Pharmacol Ther 2022; 236:108215. [DOI: 10.1016/j.pharmthera.2022.108215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 05/11/2022] [Accepted: 05/16/2022] [Indexed: 12/21/2022]
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7
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Choi MR, Cho S, Kim DJ, Choi JS, Jin YB, Kim M, Chang HJ, Jeon SH, Yang YD, Lee SR. Effects of Ethanol on Expression of Coding and Noncoding RNAs in Murine Neuroblastoma Neuro2a Cells. Int J Mol Sci 2022; 23:ijms23137294. [PMID: 35806296 PMCID: PMC9267046 DOI: 10.3390/ijms23137294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/26/2022] [Accepted: 06/28/2022] [Indexed: 11/19/2022] Open
Abstract
Excessive use of alcohol can induce neurobiological and neuropathological alterations in the brain, including the hippocampus and forebrain, through changes in neurotransmitter systems, hormonal systems, and neuroimmune processes. We aimed to investigate the effects of ethanol on the expression of coding and noncoding RNAs in a brain-derived cell line exposed to ethanol. After exposing Neuro2a cells, a neuroblastoma cell line, to ethanol for 24 and 72 h, we observed cell proliferation and analyzed up- and downregulated mRNAs and long noncoding RNAs (lncRNAs) using total RNA-Seq technology. We validated the differential expression of some mRNAs and lncRNAs by RT-qPCR and analyzed the expression of Cebpd and Rnu3a through knock-down of Cebpd. Cell proliferation was significantly reduced in cells exposed to 100 mM ethanol for 72 h, with 1773 transcripts up- or downregulated by greater than three-fold in ethanol-treated cells compared to controls. Of these, 514 were identified as lncRNAs. Differentially expressed mRNAs and lncRNAs were mainly observed in cells exposed to ethanol for 72 h, in which Atm and Cnr1 decreased, but Trib3, Cebpd, and Spdef increased. On the other hand, lncRNAs Kcnq1ot1, Tug1, and Xist were changed by ethanol, and Rnu3a in particular was greatly increased by chronic ethanol treatment through inhibition of Cebpd. Our results increase the understanding of cellular and molecular mechanisms related to coding and noncoding RNAs in an in vitro model of acute and chronic exposure to ethanol.
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Affiliation(s)
- Mi Ran Choi
- Laboratory Animal Research Center, Ajou University School of Medicine, Suwon 16499, Korea;
| | - Sinyoung Cho
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Pocheon 11160, Korea; (S.C.); (S.H.J.)
| | - Dai-Jin Kim
- Department of Psychiatry, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea;
| | - Jung-Seok Choi
- Department of Psychiatry, Samsung Medical Center, Seoul 06351, Korea;
| | - Yeung-Bae Jin
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea;
| | - Miran Kim
- Department of Obstetrics and Gynecology, Ajou University School of Medicine, Suwon 16499, Korea; (M.K.); (H.J.C.)
| | - Hye Jin Chang
- Department of Obstetrics and Gynecology, Ajou University School of Medicine, Suwon 16499, Korea; (M.K.); (H.J.C.)
| | - Seong Ho Jeon
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Pocheon 11160, Korea; (S.C.); (S.H.J.)
| | - Young Duk Yang
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Pocheon 11160, Korea; (S.C.); (S.H.J.)
- Correspondence: (Y.D.Y.); (S.-R.L.); Tel.: +82-31-881-7170 (Y.D.Y.); +82-31-219-4499 (S.-R.L.)
| | - Sang-Rae Lee
- Laboratory Animal Research Center, Ajou University School of Medicine, Suwon 16499, Korea;
- Department of Pharmacology, Ajou University School of Medicine, Suwon 16499, Korea
- Correspondence: (Y.D.Y.); (S.-R.L.); Tel.: +82-31-881-7170 (Y.D.Y.); +82-31-219-4499 (S.-R.L.)
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Identification of circRNA Expression Profiles in BMSCs from Glucocorticoid-Induced Osteoporosis Model. Stem Cells Int 2022; 2022:3249737. [PMID: 35154330 PMCID: PMC8837445 DOI: 10.1155/2022/3249737] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 01/09/2022] [Indexed: 02/07/2023] Open
Abstract
Background. Circular RNAs (circRNAs) contribute to the regulation of many diseases. However, little is known about the role of circRNAs in the development of glucocorticoid-induced osteoporosis (GIOP). The present study is aimed at systematically characterizing the circRNA expression profiles in GIOP and predict the potential functions of the associated regulatory networks. Methods. A small animal GIOP model was developed in Sprague-Dawley rats given daily intraperitoneal doses of the synthetic glucocorticoid dexamethasone. Micro-CT and bone histomorphometry were performed to characterize the bone loss. Alizarin red S (ARS) staining and alkaline phosphatase (ALP) activity were assessed to determine the osteogenic differentiation potential of BMSCs. RNA sequencing was performed to identify differentially expressed circRNAs in BMSCs between the GIOP and normal groups, which were validated by qRT-PCR. siRNA interference experiments were used to demonstrate their function. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were performed to predict the functions of differentially expressed circRNAs. The microRNA (miRNA) targets of the circRNAs and circRNA-miRNA interactions were predicted. Results. Micro-CT and bone histomorphometry confirmed the rat GIOP model. Both ARS intensity and ALP activity were decreased in GIOP BMSCs. Seventeen circRNAs were identified by
,
, and
, of which 7 were upregulated and 10 were downregulated. The qRT-PCR results of the selected circRNAs were consistent with the RNA-seq results and showed that circARSB and circAKT3 were significantly upregulated, while circPTEN and circTRPM7 were downregulated in the GIOP group. Further functional experiments found that downregulation of circARSB and circPTEN expression resulted in a corresponding change in osteogenic differentiation, suggesting that circARSB negatively, while circPTEN positively, regulates BMSC osteogenic differentiation. Analysis of circRNA-targeted miRNAs predicted that miR-135a-5p was associated with circARSB and circAKT3, and miR-881-3p was associated with circPTEN and circTRPM7. Furthermore, the signalling pathways associated with these differentially expressed circRNAs were predicted. Conclusions. The present study identified circARSB, circAKT3, circPTEN, and circTRPM7 as being associated with osteogenic differentiation during GIOP through a circRNA-targeted miRNA-mRNA axis, which might provide insight into the pathophysiological mechanism of GIOP.
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