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Xu Q, Kong F, Zhao G, Jin J, Feng S, Li M. SP1 transcriptionally activates HTR2B to aggravate traumatic spinal cord injury by shifting microglial M1/M2 polarization. J Orthop Surg Res 2024; 19:230. [PMID: 38589918 PMCID: PMC11000286 DOI: 10.1186/s13018-024-04678-z] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 03/14/2024] [Indexed: 04/10/2024] Open
Abstract
BACKGROUND Spinal cord injury (SCI) can result in structural and functional damage to the spinal cord, which may lead to loss of limb movement and sensation, loss of bowel and bladder control, and other complications. Previous studies have revealed the critical influence of trans-acting transcription factor 1 (SP1) in neurological pathologies, however, its role and mechanism in SCI have not been fully studied. METHODS The study was performed using mouse microglia BV2 stimulated using lipopolysaccharide (LPS) and male adult mice subjected to spinal hitting. Western blotting was performed to detect protein expression of SP1, 5-hydroxytryptamine (serotonin) receptor 2B (HTR2B), BCL2-associated x protein (Bax), B-cell lymphoma-2 (Bcl-2), inducible nitric oxide synthase (iNOS), clusters of differentiation 86 (CD86), Arginase 1 (Arg-1) and clusters of differentiation 206 (CD206). Cell viability and apoptosis were analyzed by MTT assay and TUNEL assay. mRNA levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), interleukin-4 (IL-4) and tumor necrosis factor-β (TNF-β) were quantified by quantitative real-time polymerase chain reaction. The association of SP1 and HTR2B was identified by chromatin immunoprecipitation assay and dual-luciferase reporter assay. HE staining assay was performed to analyze the pathological conditions of spinal cord tissues. RESULTS LPS treatment induced cell apoptosis and inhibited microglia polarization from M1 to M2 phenotype, accompanied by an increase of Bax protein expression and a decrease of Bcl-2 protein expression, however, these effects were relieved after SP1 silencing. Mechanism assays revealed that SP1 transcriptionally activated HTR2B in BV2 cells, and HTR2B knockdown rescued LPS-induced effects on BV2 cell apoptosis and microglial M1/M2 polarization. Moreover, SP1 absence inhibited BV2 cell apoptosis and promoted microglia polarization from M1 to M2 phenotype by decreasing HTR2B expression. SCI mouse model assay further showed that SP1 downregulation could attenuate spinal hitting-induced promoting effects on cell apoptosis of spinal cord tissues and microglial M1 polarization. CONCLUSION SP1 transcriptionally activated HTR2B to aggravate traumatic SCI by shifting microglial M1/M2 polarization.
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Affiliation(s)
- Qifei Xu
- Department of Orthopedics, The First People's Hospital of Pingdingshan, Pingdingshan, 467000, China
| | - Fanguo Kong
- Department of Orthopedics, Henan Provincial Orthopedic Hospital, No. 100, Yongping Road, Zhengdong New District, Zhengzhou, 450045, China.
| | - Guanghui Zhao
- Department of Orthopedics, The First People's Hospital of Pingdingshan, Pingdingshan, 467000, China
| | - Junwei Jin
- Department of Orthopedics, The First People's Hospital of Pingdingshan, Pingdingshan, 467000, China
| | - Shengkai Feng
- Department of Orthopedics, The First People's Hospital of Pingdingshan, Pingdingshan, 467000, China
| | - Ming Li
- Department of Orthopedics, The First People's Hospital of Pingdingshan, Pingdingshan, 467000, China
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Zhang Y, Shen N, Jiang A, Zhao J, Sang Y, Wang A, Shen W, Gao Y. Multiomics-based classifier to decipher immune landscape of uveal melanoma and predict patient outcomes. J Biomol Struct Dyn 2024:1-17. [PMID: 38468495 DOI: 10.1080/07391102.2024.2318656] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/08/2024] [Indexed: 03/13/2024]
Abstract
Uveal melanoma (UVM) prognosis and the possibilities for targeted therapy depend on a thorough understanding of immune infiltration features and the analysis of genomic and immune signatures. Leveraging multi-omics data from The Cancer Genome Atlas and GEO datasets, we employed an unsupervised clustering algorithm to categorize UVM into immune-related subgroups. Subsequent multi-omics analysis revealed two distinct UVM subtypes, each characterized by unique genomic mutations and immune microenvironment disparities. The aggressive UMCS2 subtype exhibited higher TNM stage and poorer survival, marked by elevated metabolism and increased immune infiltration. However, UMCS2 displayed heightened tumor mutational burden and immune dysfunction, leading to reduced responsiveness to immunotherapy. Importantly, these subtypes demonstrated differential sensitivity to targeted drugs due to significant variances in metabolic and immune environments, with UMCS2 displaying lower sensitivity. We developed a robust, subtype-specific marker-based risk scoring system. This system's diagnostic accuracy was validated through ROC curves, decision curve analysis, and calibration curves, all yielding satisfactory results. Additionally, cell experiments identified the pivotal function of HTR2B, the most crucial factor in this risk model. Knocking down HTR2B significantly reduced the activity, proliferation, and invasion ability of the UVM cell line. These findings underscored the impact of gene and immune microenvironment alterations in driving distinct molecular subtypes, emphasizing the need for precise treatment strategies. The molecular subtyping-based risk assessment system not only aids in predicting patient prognosis but also guides the identification of populations suitable for combined treatment. Molecules represented by HTR2B in the model may serve as effective therapeutic targets for UVM.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Yuan Zhang
- Department of Ophthalmology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Ni Shen
- Department of Ophthalmology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Aimin Jiang
- Department of Urology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Jiawei Zhao
- Department of Ophthalmology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Yanzhi Sang
- Department of Ophthalmology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Anbang Wang
- Department of Urology, Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Wei Shen
- Department of Ophthalmology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Yu Gao
- Department of Ophthalmology, Changhai Hospital, Naval Medical University, Shanghai, China
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Penno JRCZ, Santos-Bezerra DP, Cavaleiro AM, da Silva Sousa AM, Zaccara TA, da Costa RA, Francisco RPV, Correa-Giannella ML. Variant rs17619600 in the gene encoding serotonin receptor 2B ( HTR2B) increases the risk of gestational diabetes mellitus: a case-control study. Eur J Med Res 2023; 28:243. [PMID: 37480094 PMCID: PMC10362639 DOI: 10.1186/s40001-023-01211-6] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 07/05/2023] [Indexed: 07/23/2023] Open
Abstract
BACKGROUND During pregnancy, the increase in maternal insulin resistance is compensated by hyperplasia and increased function of maternal pancreatic beta cells; the failure of this compensatory mechanism is associated with gestational diabetes mellitus (GDM). Serotonin participates in beta cell adaptation, acting downstream of the prolactin pathway; the blocking of serotonin receptor B (HTR2B) signaling in pregnant mice impaired beta cell expansion and caused glucose intolerance. Thus, given the importance of the serotoninergic system for the adaptation of beta cells to the increased insulin demand during pregnancy, we hypothesized that genetic variants (single nucleotide polymorphisms [SNPs]) in the gene encoding HTR2B could influence the risk of developing GDM. METHODS This was a case-control study. Five SNPs (rs4973377, rs765458, rs10187149, rs10194776, and s17619600) in HTR2B were genotyped by real-time polymerase chain reaction in 453 women with GDM and in 443 pregnant women without GDM. RESULTS Only the minor allele C of SNP rs17619600 conferred an increased risk for GDM in the codominant model (odds ratio [OR] 2.15; 95% confidence interval [CI] 1.53-3.09; P < 0.0001) and in the rare dominant model (OR 2.32; CI 1.61-3.37; P < 0.0001). No associations were found between the SNPs and insulin use, maternal weight gain, newborn weight, or the result of postpartum oral glucose tolerance test (OGTT). In the overall population, carriers of the XC genotype (rare dominant model) presented a higher area under the curve (AUC) of plasma glucose during the OGTT, performed for diagnostic purposes, compared with carriers of the TT genotype of rs17619600. CONCLUSIONS SNP rs17619600 in the HTR2B gene influences glucose homeostasis, probably affecting insulin release, and the presence of the minor allele C was associated with a higher risk of GDM.
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Affiliation(s)
- Juliana Regina Chamlian Zucare Penno
- Laboratório de Carboidratos e Radioimunoensaios (LIM-18), Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, Sala #3321, CEP, 01246-000, Sao Paulo, SP, Brazil
| | - Daniele Pereira Santos-Bezerra
- Laboratório de Carboidratos e Radioimunoensaios (LIM-18), Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, Sala #3321, CEP, 01246-000, Sao Paulo, SP, Brazil
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biomédicas, Universidade de São Paulo, Av. Prof. Lineu Prestes 1524, Sao Paulo, SP, Brazil
| | - Ana Mercedes Cavaleiro
- Laboratório de Carboidratos e Radioimunoensaios (LIM-18), Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, Sala #3321, CEP, 01246-000, Sao Paulo, SP, Brazil
| | - Ana Maria da Silva Sousa
- Disciplina de Obstetrícia, Departamento de Obstetrícia e Ginecologia, Faculdade de Medicina FMUSP, Universidade de São Paulo, Instituto Central-Hospital das Clínicas, Av. Dr. Enéas de Carvalho Aguiar 255, 10º Andar, Sala 10.093, CEP, 05403-000, Sao Paulo, SP, Brazil
| | - Tatiana Assunção Zaccara
- Disciplina de Obstetrícia, Departamento de Obstetrícia e Ginecologia, Faculdade de Medicina FMUSP, Universidade de São Paulo, Instituto Central-Hospital das Clínicas, Av. Dr. Enéas de Carvalho Aguiar 255, 10º Andar, Sala 10.093, CEP, 05403-000, Sao Paulo, SP, Brazil
| | - Rafaela Alkmin da Costa
- Disciplina de Obstetrícia, Departamento de Obstetrícia e Ginecologia, Faculdade de Medicina FMUSP, Universidade de São Paulo, Instituto Central-Hospital das Clínicas, Av. Dr. Enéas de Carvalho Aguiar 255, 10º Andar, Sala 10.093, CEP, 05403-000, Sao Paulo, SP, Brazil
| | - Rossana Pulcineli Vieira Francisco
- Disciplina de Obstetrícia, Departamento de Obstetrícia e Ginecologia, Faculdade de Medicina FMUSP, Universidade de São Paulo, Instituto Central-Hospital das Clínicas, Av. Dr. Enéas de Carvalho Aguiar 255, 10º Andar, Sala 10.093, CEP, 05403-000, Sao Paulo, SP, Brazil
| | - Maria Lucia Correa-Giannella
- Laboratório de Carboidratos e Radioimunoensaios (LIM-18), Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, Sala #3321, CEP, 01246-000, Sao Paulo, SP, Brazil.
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Cao C, Barros-Álvarez X, Zhang S, Kim K, Dämgen MA, Panova O, Suomivuori CM, Fay JF, Zhong X, Krumm BE, Gumpper RH, Seven AB, Robertson MJ, Krogan NJ, Hüttenhain R, Nichols DE, Dror RO, Skiniotis G, Roth BL. Signaling snapshots of a serotonin receptor activated by the prototypical psychedelic LSD. Neuron 2022; 110:3154-3167.e7. [PMID: 36087581 PMCID: PMC9583076 DOI: 10.1016/j.neuron.2022.08.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [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: 03/24/2022] [Revised: 07/13/2022] [Accepted: 08/12/2022] [Indexed: 10/14/2022]
Abstract
Serotonin (5-hydroxytryptamine [5-HT]) 5-HT2-family receptors represent essential targets for lysergic acid diethylamide (LSD) and all other psychedelic drugs. Although the primary psychedelic drug effects are mediated by the 5-HT2A serotonin receptor (HTR2A), the 5-HT2B serotonin receptor (HTR2B) has been used as a model receptor to study the activation mechanisms of psychedelic drugs due to its high expression and similarity to HTR2A. In this study, we determined the cryo-EM structures of LSD-bound HTR2B in the transducer-free, Gq-protein-coupled, and β-arrestin-1-coupled states. These structures provide distinct signaling snapshots of LSD's action, ranging from the transducer-free, partially active state to the transducer-coupled, fully active states. Insights from this study will both provide comprehensive molecular insights into the signaling mechanisms of the prototypical psychedelic LSD and accelerate the discovery of novel psychedelic drugs.
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Affiliation(s)
- Can Cao
- Department of Pharmacology, University of North Carolina at Chapel Hill, School of Medicine, Chapel Hill, NC 27599-7365, USA
| | - Ximena Barros-Álvarez
- Department of Molecular and Cellular Physiology, Department of Structural Biology, Stanford University School of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Shicheng Zhang
- Department of Pharmacology, University of North Carolina at Chapel Hill, School of Medicine, Chapel Hill, NC 27599-7365, USA
| | - Kuglae Kim
- Department of Pharmacology, University of North Carolina at Chapel Hill, School of Medicine, Chapel Hill, NC 27599-7365, USA
| | - Marc A Dämgen
- Department of Molecular and Cellular Physiology, Department of Structural Biology, Stanford University School of Medicine, Stanford University, Stanford, CA 94305, USA; Department of Computer Science, Stanford University, Stanford, CA 94305, USA; Institute for Computational and Mathematical Engineering, Stanford University, Stanford, CA 94305, USA
| | - Ouliana Panova
- Department of Molecular and Cellular Physiology, Department of Structural Biology, Stanford University School of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Carl-Mikael Suomivuori
- Department of Molecular and Cellular Physiology, Department of Structural Biology, Stanford University School of Medicine, Stanford University, Stanford, CA 94305, USA; Department of Computer Science, Stanford University, Stanford, CA 94305, USA; Institute for Computational and Mathematical Engineering, Stanford University, Stanford, CA 94305, USA
| | - Jonathan F Fay
- Department of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, School of Medicine, Chapel Hill, NC 7599-7365, USA
| | - Xiaofang Zhong
- Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA, USA; J. David Gladstone Institutes, San Francisco, CA, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA, USA
| | - Brian E Krumm
- Department of Pharmacology, University of North Carolina at Chapel Hill, School of Medicine, Chapel Hill, NC 27599-7365, USA
| | - Ryan H Gumpper
- Department of Pharmacology, University of North Carolina at Chapel Hill, School of Medicine, Chapel Hill, NC 27599-7365, USA
| | - Alpay B Seven
- Department of Molecular and Cellular Physiology, Department of Structural Biology, Stanford University School of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Michael J Robertson
- Department of Molecular and Cellular Physiology, Department of Structural Biology, Stanford University School of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Nevan J Krogan
- Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA, USA; J. David Gladstone Institutes, San Francisco, CA, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA, USA
| | - Ruth Hüttenhain
- Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA, USA; J. David Gladstone Institutes, San Francisco, CA, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA, USA
| | - David E Nichols
- Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7365, USA
| | - Ron O Dror
- Department of Molecular and Cellular Physiology, Department of Structural Biology, Stanford University School of Medicine, Stanford University, Stanford, CA 94305, USA; Department of Computer Science, Stanford University, Stanford, CA 94305, USA; Institute for Computational and Mathematical Engineering, Stanford University, Stanford, CA 94305, USA.
| | - Georgios Skiniotis
- Department of Molecular and Cellular Physiology, Department of Structural Biology, Stanford University School of Medicine, Stanford University, Stanford, CA 94305, USA.
| | - Bryan L Roth
- Department of Pharmacology, University of North Carolina at Chapel Hill, School of Medicine, Chapel Hill, NC 27599-7365, USA; Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7365, USA.
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Faria M, Bellot M, Bedrossiantz J, Ramírez JRR, Prats E, Garcia-Reyero N, Gomez-Canela C, Mestres J, Rovira X, Barata C, Oliván LMG, Llebaria A, Raldua D. Environmental levels of carbaryl impair zebrafish larvae behaviour: The potential role of ADRA2B and HTR2B. J Hazard Mater 2022; 431:128563. [PMID: 35248961 DOI: 10.1016/j.jhazmat.2022.128563] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/14/2022] [Accepted: 02/22/2022] [Indexed: 06/14/2023]
Abstract
The insecticide carbaryl is commonly found in indirectly exposed freshwater ecosystems at low concentrations considered safe for fish communities. In this study, we showed that after only 24 h of exposure to environmental concentrations of carbaryl (0.066-660 ng/L), zebrafish larvae exhibit impairments in essential behaviours. Interestingly, the observed behavioural effects induced by carbaryl were acetylcholinesterase-independent. To elucidate the molecular initiating event that resulted in the observed behavioural effects, in silico predictions were followed by in vitro validation. We identified two target proteins that potentially interacted with carbaryl, the α2B adrenoceptor (ADRA2B) and the serotonin 2B receptor (HTR2B). Using a pharmacological approach, we then tested the hypothesis that carbaryl had antagonistic interactions with both receptors. Similar to yohimbine and SB204741, which are prototypic antagonists of ADRA2B and HTR2B, respectively, carbaryl increased the heart rate of zebrafish larvae. When we compared the behavioural effects of a 24-h exposure to these pharmacological antagonists with those of carbaryl, a high degree of similarity was found. These results strongly suggest that antagonism of both ADRA2B and HTR2B is the molecular initiating event that leads to adverse outcomes in zebrafish larvae that have undergone 24 h of exposure to environmentally relevant levels of carbaryl.
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Affiliation(s)
- Melissa Faria
- Institute for Environmental Assessment and Water Research (IDAEA-CSIC), Jordi Girona, 18, 08034 Barcelona, Spain
| | - Marina Bellot
- Department of Analytical Chemistry and Applied (Chromatography section), School of Engineering, Institut Químic de Sarrià-Universitat Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain
| | - Juliette Bedrossiantz
- Institute for Environmental Assessment and Water Research (IDAEA-CSIC), Jordi Girona, 18, 08034 Barcelona, Spain
| | - Jonathan Ricardo Rosas Ramírez
- Laboratorio de Toxicología Ambiental, Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón intersección Paseo Tollocan s/n. Col. Residencial Colón, 50120 Toluca, Estado de México, Mexico
| | - Eva Prats
- Research and Development Center (CID-CSIC), Jordi Girona 18, 08034 Barcelona, Spain
| | - Natalia Garcia-Reyero
- Environmental Laboratory, US Army Engineer Research and Development Center, Vicksburg, MS, USA
| | - Cristian Gomez-Canela
- Department of Analytical Chemistry and Applied (Chromatography section), School of Engineering, Institut Químic de Sarrià-Universitat Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain
| | - Jordi Mestres
- Chemotargets, IMIM-Hospital del Mar, Universitat Pompeu Fabra, Barcelona, Catalonia, Spain
| | - Xavier Rovira
- MCS, Laboratory of Medicinal Chemistry, Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), 08034 Barcelona, Spain
| | - Carlos Barata
- Institute for Environmental Assessment and Water Research (IDAEA-CSIC), Jordi Girona, 18, 08034 Barcelona, Spain
| | - Leobardo Manuel Gómez Oliván
- Laboratorio de Toxicología Ambiental, Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón intersección Paseo Tollocan s/n. Col. Residencial Colón, 50120 Toluca, Estado de México, Mexico
| | - Amadeu Llebaria
- MCS, Laboratory of Medicinal Chemistry, Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), 08034 Barcelona, Spain
| | - Demetrio Raldua
- Institute for Environmental Assessment and Water Research (IDAEA-CSIC), Jordi Girona, 18, 08034 Barcelona, Spain.
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Benhassine M, Le-Bel G, Guérin SL. Contribution of the STAT Family of Transcription Factors to the Expression of the Serotonin 2B ( HTR2B) Receptor in Human Uveal Melanoma. Int J Mol Sci 2022; 23:1564. [PMID: 35163491 DOI: 10.3390/ijms23031564] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/21/2022] [Accepted: 01/26/2022] [Indexed: 11/16/2022] Open
Abstract
Uveal melanoma (UM) remains the most common intraocular malignancy among diseases affecting the adult eye. The primary tumor disseminates to the liver in half of patients and leads to a 6 to 12-month survival rate, making UM a particularly aggressive type of cancer. Genomic analyses have led to the development of gene-expression profiles that can efficiently predict metastatic progression. Among these genes, that encoding the serotonin receptor 2B (HTR2B) represents the most discriminant from this molecular signature, its aberrant expression being the hallmark of UM metastatic progression. Recent evidence suggests that expression of HTR2B might be regulated through the Janus kinase/Signal Transducer and Activator of Transcription proteins (JAK/STAT) intracellular signalization pathway. However, little is actually known about the molecular mechanisms involved in the abnormally elevated expression of the HTR2B gene in metastatic UM and whether activated STAT proteins participates to this mechanism. In this study, we determined the pattern of STAT family members expressed in both primary tumors and UM cell-lines, and evaluated their contribution to HTR2B gene expression. Examination of the HTR2B promoter sequence revealed the presence of a STAT putative target site (5′-TTC (N)3 GAA3′) located 280 bp upstream of the mRNA start site that is completely identical to the high affinity binding site recognized by these TFs. Gene profiling on microarrays provided evidence that metastatic UM cell lines with high levels of HTR2B also express high levels of STAT proteins whereas low levels of these TFs are observed in non-metastatic UM cells with low levels of HTR2B, suggesting that STAT proteins contribute to HTR2B gene expression in UM cells. All UM cell lines tested were found to express their own pattern of STAT proteins in Western blot analyses. Furthermore, T142 and T143 UM cells responded to interleukins IL-4 and IL-6 by increasing the phosphorylation status of STAT1. Most of all, expression of HTR2B also considerably increased in response to both IL-4 and IL-6 therefore providing evidence that HTR2B gene expression is modulated by STAT proteins in UM cells. The binding of STAT proteins to the −280 HTR2B/STAT site was also demonstrated by electrophoretic mobility shift assay (EMSA) analyses and site-directed mutation of that STAT site also abolished both IL-4 and IL-6 responsiveness in in vitro transfection analyses. The results of this study therefore demonstrate that members from the STAT family of TFs positively contribute to the expression of HTR2B in uveal melanoma.
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Wu VC, Peng KY, Kuo YP, Liu H, Tan BCM, Lin YH, Lai TS, Chen YM, Chueh JS. Subtypes of Histopathologically Classical Aldosterone-Producing Adenomas Yield Various Transcriptomic Signaling and Outcomes. Hypertension 2021; 78:1791-1800. [PMID: 34657444 DOI: 10.1161/hypertensionaha.121.18006] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Vin-Cent Wu
- Division of Nephrology (V.-C.W., T.-S.L., Y.-M.C.), National Taiwan University Hospital, Taipei
| | - Kang-Yung Peng
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan (H.L., K.-Y.P.)
| | | | - Hsuan Liu
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan (H.L., K.-Y.P.).,Graduate Institute of Biomedical Sciences (H.L., B.C.-M.T.), Chang Gung University, Taoyuan, Taiwan.,Department of Cell and Molecular Biology (H.L.), Chang Gung University, Taoyuan, Taiwan.,Division of Colon and Rectal Surgery, Department of Neurosurgery (H.L.), Taoyuan, Taiwan. TAIPAI group, Taiwan Primary Aldosteronism Investigation, Taipei, Taiwan
| | - Bertrand Chin-Ming Tan
- Graduate Institute of Biomedical Sciences (H.L., B.C.-M.T.), Chang Gung University, Taoyuan, Taiwan.,Department of Biomedical Sciences, Research Center for Emerging Viral Infections (B.C.-M.T.), Chang Gung University, Taoyuan, Taiwan.,College of Medicine (B.C.-M.T.), Chang Gung University, Taoyuan, Taiwan.,Lin-Kou Medical Center, Chang Gung Memorial Hospital (B.C.-M.T.), Taoyuan, Taiwan. TAIPAI group, Taiwan Primary Aldosteronism Investigation, Taipei, Taiwan
| | - Yen-Hung Lin
- Division of Cardiology, Department of Internal Medicine (Y.-H.L.), National Taiwan University Hospital, Taipei
| | - Tai-Shuan Lai
- Division of Nephrology (V.-C.W., T.-S.L., Y.-M.C.), National Taiwan University Hospital, Taipei
| | - Yung-Ming Chen
- Division of Nephrology (V.-C.W., T.-S.L., Y.-M.C.), National Taiwan University Hospital, Taipei
| | - Jeff S Chueh
- Department of Urology, College of Medicine (J.S.C.), National Taiwan University Hospital, Taipei
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Lu X, Fan Y, Li M, Chang X, Qian J. HTR2B and SLC5A3 Are Specific Markers in Age-Related Osteoarthritis and Involved in Apoptosis and Inflammation of Osteoarthritis Synovial Cells. Front Mol Biosci 2021; 8:691602. [PMID: 34222340 PMCID: PMC8241908 DOI: 10.3389/fmolb.2021.691602] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 05/06/2021] [Indexed: 12/17/2022] Open
Abstract
Objective: Osteoarthritis (OA) is a heterogeneous age-related disease, which is badly difficult to cure due to its complex regulatory networks of pathogenesis. This study explored OA-specific genes in synovial tissues and validated their roles on apoptosis and inflammation of OA synovial cells. Methods: Weighted correlation network analysis (WGCNA) was employed to explore OA-related co-expression modules in the GSE55235 and GSE55457 datasets. Then, this study screened OA-specific genes. After validation of these genes in the GSE12021 and GSE32317 datasets, HTR2B and SLC5A3 were obtained. Their expression was detected in human OA and healthy synovial tissues by RT-qPCR and western blot. OA rat models were constructed by anterior cruciate ligament transection (ACLT) operation. In OA synovial cells, HTR2B and SLC5A3 proteins were examined via western blot. After transfection with sh-HTR2B or sh-SLC5A3, apoptosis and inflammation of OA synovial cells were investigated by flow cytometry and western blot. Results: A total of 17 OA-specific DEGs were identified, which were significantly enriched in inflammation pathways. Among them, HTR2B and SLC5A3 were highly expressed in end-than early-stage OA. Their up-regulation was validated in human OA synovial tissues and ACLT-induced OA synovial cells. Knockdown of HTR2B and SLC5A3 restrained apoptosis and increased TGF-β and IL-4 expression as well as reduced TNF-α and IL-1β expression in OA synovial cells. Conclusion: Collectively, this study identified two OA-specific markers HTR2B and SLC5A3 and their knockdown ameliorated apoptosis and inflammation of OA synovial cells.
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Affiliation(s)
- Xin Lu
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yu Fan
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Mingxia Li
- The Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiao Chang
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jun Qian
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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9
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Fong F, Xian J, Demer LL, Tintut Y. Serotonin receptor type 2B activation augments TNF-α-induced matrix mineralization in murine valvular interstitial cells. J Cell Biochem 2020; 122:249-258. [PMID: 32901992 DOI: 10.1002/jcb.29847] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 08/26/2020] [Accepted: 08/31/2020] [Indexed: 02/01/2023]
Abstract
Calcification, fibrosis, and chronic inflammation are the predominant features of calcific aortic valve disease, a life-threatening condition. Drugs that induce serotonin (5-hydroxytryptamine [5-HT]) are known to damage valves, and activated platelets, which carry peripheral serotonin, are known to promote calcific aortic valve stenosis. However, the role of 5-HT in valve leaflet pathology is not known. We tested whether serotonin mediates inflammation-induced matrix mineralization in valve cells. Real-time reverse transcription-polymerase chain reaction analysis showed that murine aortic valve interstitial cells (VICs) expressed both serotonin receptor types 2A and 2B (Htr2a and Htr2b). Although Htr2a expression was greater at baseline, Htr2b expression was induced several-fold more than Htr2a in response to the pro-calcific tumor necrosis factor-α (TNF-α) treatment. 5-HT also augmented TNF-α-induced osteoblastic differentiation and matrix mineralization of VIC, but 5-HT alone had no effects. Inhibition of serotonin receptor type 2B, using specific inhibitors or lentiviral knockdown in VIC, attenuated 5-HT effects on TNF-α-induced osteoblastic differentiation and mineralization. 5-HT treatment also augmented TNF-α-induced matrix metalloproteinase-3 expression, which was also attenuated by Htr2b knockdown. Htr2b expression in aortic roots and serum levels of peripheral 5-HT were also greater in the hyperlipidemic Apoe-/- mice than in control normolipemic mice. These findings suggest a new role for serotonin signaling in inflammation-induced calcific valvulopathy.
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Affiliation(s)
- Felicia Fong
- Department of Medicine, University of California, Los Angeles, California, USA
| | - Joshua Xian
- Department of Medicine, University of California, Los Angeles, California, USA
| | - Linda L Demer
- Department of Medicine, University of California, Los Angeles, California, USA.,Department of Bioengineering, University of California, Los Angeles, California, USA.,Department of Physiology, University of California, Los Angeles, California, USA
| | - Yin Tintut
- Department of Medicine, University of California, Los Angeles, California, USA.,Department of Bioengineering, University of California, Los Angeles, California, USA.,Department of Orthopedic Surgery, University of California, Los Angeles, California, USA
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10
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Benhassine M, Guérin SL. Transcription of the Human 5-Hydroxytryptamine Receptor 2B ( HTR2B) Gene Is under the Regulatory Influence of the Transcription Factors NFI and RUNX1 in Human Uveal Melanoma. Int J Mol Sci 2018; 19:ijms19103272. [PMID: 30347896 PMCID: PMC6214142 DOI: 10.3390/ijms19103272] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 08/25/2018] [Revised: 09/27/2018] [Accepted: 10/12/2018] [Indexed: 02/07/2023] Open
Abstract
Because it accounts for 70% of all eye cancers, uveal melanoma (UM) is therefore the most common primary ocular malignancy. In this study, we investigated the molecular mechanisms leading to the aberrant expression of the gene encoding the serotonin receptor 2B (HTR2B), one of the most discriminating among the candidates from the class II gene signature, in metastatic and non-metastatic UM cell lines. Transfection analyses revealed that the upstream regulatory region of the HTR2B gene contains a combination of alternative positive and negative regulatory elements functional in HTR2B− but not in HTR23B+ UM cells. We demonstrated that both the transcription factors nuclear factor I (NFI) and Runt-related transcription factor I (RUNX1) interact with regulatory elements from the HTR2B gene to either activate (NFI) or repress (RUNX1) HTR2B expression in UM cells. The results of this study will help understand better the molecular mechanisms accounting for the abnormal expression of the HTR2B gene in uveal melanoma.
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Affiliation(s)
- Manel Benhassine
- Centre Universitaire d'Ophtalmologie-Recherche (CUO-Recherche), Axe médecine régénératrice, Hôpital du Saint-Sacrement, Centre de Recherche FRQS du CHU de Québec, Université Laval, Québec, QC G1S4L8, Canada.
| | - Sylvain L Guérin
- Centre Universitaire d'Ophtalmologie-Recherche (CUO-Recherche), Axe médecine régénératrice, Hôpital du Saint-Sacrement, Centre de Recherche FRQS du CHU de Québec, Université Laval, Québec, QC G1S4L8, Canada.
- Département d'ophtalmologie, Faculté de Médecine, Université Laval, Québec, QC G1V0A6, Canada.
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11
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Christ CC, Watkins LE, DiLillo D, Stoltenberg S. Alcohol Intoxication Moderates the Association between a Polygenic Risk Score and Unprovoked Intimate Partner Aggression. J Fam Violence 2018; 33:83-94. [PMID: 34054209 PMCID: PMC8157497 DOI: 10.1007/s10896-017-9908-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Despite evidence that genetic variation contributes to aggression, few studies have examined how genetic variation contributes to IPA specifically. In the current study, 69 couples from a Midwestern university completed self-report measures of IPA, childhood trauma exposure, and hazardous alcohol use, and were randomly assigned to consume either a placebo or alcohol beverage before participating in an analogue aggression task against their partner. Genetic risk (i.e., association with lower transcriptional efficiency) for aggression was measured with a polygenic risk score (PRS) created from four polymorphisms (HTR1B rs13212041, HTR2B rs6437000, 5-HTTLPR, and MAOA uVNTR). Among individuals with a low PRS, individuals who consumed alcohol (BrAC = 0.07%) showed greater unprovoked IPA than individuals who consumed a placebo. Findings contribute to our limited understanding regarding the etiology of IPA and suggest that individuals who have increased transcriptional activity in certain serotonin system genes may be at higher risk of IPA when intoxicated.
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Affiliation(s)
| | - Laura E Watkins
- U.S. Department of Veterans Affairs National Center for Posttraumatic Stress Disorder, Clinical Neurosciences Division and Yale School of Medicine
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Tikkanen R, Saukkonen T, Fex M, Bennet H, Rautiainen MR, Paunio T, Koskinen M, Panarsky R, Bevilacqua L, Sjöberg RL, Tiihonen J, Virkkunen M. The effects of a HTR2B stop codon and testosterone on energy metabolism and beta cell function among antisocial Finnish males. J Psychiatr Res 2016; 81:79-86. [PMID: 27420381 DOI: 10.1016/j.jpsychires.2016.06.019] [Citation(s) in RCA: 2] [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] [Received: 04/09/2016] [Revised: 06/13/2016] [Accepted: 06/24/2016] [Indexed: 01/31/2023]
Abstract
Herein, we examined insulin resistance (IR), insulin sensitivity (IS), beta cell activity, and glucose metabolism in subjects with antisocial personality disorder (ASPD), and whether the serotonin 2B (5-HT2B) receptor and testosterone have a role in energy metabolism. A cohort of subjects belonging to a founder population that included 98 ASPD males, aged 25-30, was divided into groups based on the presence of a heterozygous 5-HT2B receptor loss-of-function gene mutation (HTR2B Q20*; n = 9) or not (n = 89). Serum glucose and insulin levels were measured in a 5 h oral glucose tolerance test (75 g) and indices describing IR, IS, and beta cell activity were calculated. Body mass index (BMI) was also determined. Concentrations of the serotonin metabolite 5-hydroxyindoleacetic acid were measured in cerebrospinal fluid, and testosterone levels from serum. An IR-like state comprising high IR, low IS, and high beta cell activity indices was observed among ASPD subjects without the HTR2B Q20* allele. By contrast, being an ASPD HTR2B Q20* carrier appeared to be preventive of these pathophysiologies. The HTR2B Q20* allele and testosterone predicted lower BMI independently, but an interaction between HTR2B Q20* and testosterone lead to increased insulin sensitivity among HTR2B Q20* carriers with low testosterone levels. The HTR2B Q20* allele also predicted reduced beta cell activity and enhanced glucose metabolism. Reduced 5-HT2B receptor function at low or normal testosterone levels may be protective of obesity. Results were observed among Finnish males having an antisocial personality disorder, which limits the generality.
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Affiliation(s)
- Roope Tikkanen
- Department of Psychiatry, University of Helsinki, Helsinki University Central Hospital, Helsinki, Finland; Research and Development, Rinnekoti Foundation, Espoo, Finland.
| | - Tero Saukkonen
- Children's Hospital, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland; Novo Nordisk Farma Oy, Espoo, Finland
| | - Malin Fex
- Department of Clinical Science, Lund University Diabetes Center, Scania University Hospital, Malmö, Sweden
| | - Hedvig Bennet
- Department of Clinical Science, Lund University Diabetes Center, Scania University Hospital, Malmö, Sweden
| | | | - Tiina Paunio
- Department of Psychiatry, University of Helsinki, Helsinki University Central Hospital, Helsinki, Finland; National Institute for Health and Welfare, Helsinki, Finland
| | | | - Rony Panarsky
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD, USA
| | - Laura Bevilacqua
- Department of Psychiatry, New York University School of Medicine, New York, NY, USA
| | - Rickard L Sjöberg
- Department of Pharmacology and Clinical Neuroscience, Umeå University, Umeå, Sweden
| | - Jari Tiihonen
- National Institute for Health and Welfare, Helsinki, Finland; Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Department of Forensic Psychiatry, University of Eastern Finland, Niuvanniemi Hospital, Kuopio, Finland
| | - Matti Virkkunen
- Department of Psychiatry, University of Helsinki, Helsinki University Central Hospital, Helsinki, Finland
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