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Mubeen S, Raza I, Ujjan B, Wasim B, Khan L, Naeem N, Enam SA, Hanif F. Iloperidone and Temozolomide Synergistically Inhibit Growth, Migration and Enhance Apoptosis in Glioblastoma Cells. Biomedicines 2024; 12:1134. [PMID: 38927341 PMCID: PMC11200733 DOI: 10.3390/biomedicines12061134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 05/06/2024] [Accepted: 05/14/2024] [Indexed: 06/28/2024] Open
Abstract
Glioblastoma (GBM) is a fatal astrocytic glioma with poor prognosis and treatment resistance. Repurposing potential FDA-approved drugs like anti-psychotics can address the concerns in a timely and cost-effective manner. Epidemiological studies have shown that patients with schizophrenic using anti-psychotics have a low incidence of GBM. Therefore, we aimed to investigate the therapeutic potential of atypical anti-psychotic Iloperidone (ILO) alone and in combination with Temozolomide (TMZ) against GBM. The study assessed the growth inhibitory effect of ILO, TMZ, and their combination (ILO + TMZ) on U-87MG and T-98G cell lines using an MTT assay. The drug interaction coefficient (CDI) was determined, and doses with synergistic effects were used for subsequent experiments, including migratory, invasion, and TUNEL assays. The expressions of DRD2, β-catenin, Dvl2, Twist, and Slug were assessed by RTq-PCR, whereas the β-catenin protein expression was also determined by immunocytochemistry. ILO (p < 0.05) and TMZ (p < 0.01) significantly inhibited the growth of U-87MG cells at all tested doses. The combination of 60 µM of both drugs showed synergistic activity with CDI < 1. The inhibition of migration and apoptosis was more pronounced in the case of combination treatment (p < 0.001). Inhibition of the invading cells was also found to be significant in ILO- and combination-treated groups (p < 0.001). ILO and combination treatment also significantly downregulated the expression of DRD2, while TMZ upregulated the expression (p < 0.001). The expressions of β-catenin (p < 0.001), Dvl2 (p < 0.001), Twist (p < 0.001), and Slug (p < 0.001) were also significantly downregulated in all treatment groups as compared to the vehicle control. The data suggest that ILO possesses strong growth inhibitory activity, possibly due to its effect on DRD2 and β-catenin expression and has the potential to be repurposed against GBM.
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Affiliation(s)
- Sahar Mubeen
- Department of Anatomy, Dow International Medical College, Dow University of Health Sciences, Karachi 75330, Pakistan;
| | - Iffat Raza
- Department of Anatomy, Karachi Institute of Medical Sciences, Karachi 75080, Pakistan;
| | - Badaruddin Ujjan
- Department of Neurosurgery, Dow University Hospital, Dow University of Health Sciences, Karachi 74200, Pakistan;
| | - Bushra Wasim
- Department of Anatomy, Ziauddin University Hospital, Karachi 75600, Pakistan;
| | - Lubna Khan
- Department of Biochemistry, Dow International Medical College, Dow University of Health Sciences, Karachi 75330, Pakistan;
| | - Nadia Naeem
- Dow Research Institute of Biotechnology & Biomedical Sciences, Karachi 75330, Pakistan;
| | - Syed Ather Enam
- Center of Oncological Research in Surgery, Aga Khan University Hospital, Karachi 74800, Pakistan;
| | - Farina Hanif
- Department of Biochemistry, Dow International Medical College, Dow University of Health Sciences, Karachi 75330, Pakistan;
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Wenk D, Khan S, Ignatchenko V, Hübner H, Gmeiner P, Weikert D, Pischetsrieder M, Kislinger T. Phosphoproteomic Analysis of Dopamine D2 Receptor Signaling Reveals Interplay of G Protein- and β-Arrestin-Mediated Effects. J Proteome Res 2023; 22:259-271. [PMID: 36508580 PMCID: PMC9831068 DOI: 10.1021/acs.jproteome.2c00707] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Leveraging biased signaling of G protein-coupled receptors has been proposed as a promising strategy for the development of drugs with higher specificity. However, the consequences of selectively targeting G protein- or β-arrestin-mediated signaling on cellular functions are not comprehensively understood. In this study, we utilized phosphoproteomics to gain a systematic overview of signaling induced by the four biased and balanced dopamine D2 receptor (D2R) ligands MS308, BM138, quinpirole, and sulpiride in an in vitro D2R transfection model. Quantification of 14,160 phosphosites revealed a low impact of the partial G protein agonist MS308 on cellular protein phosphorylation, as well as surprising similarities between the balanced agonist quinpirole and the inverse agonist sulpiride. Analysis of the temporal profiles of ligand-induced phosphorylation events showed a transient impact of the G protein-selective agonist MS308, whereas the β-arrestin-preferring agonist BM138 elicited a delayed, but more pronounced response. Functional enrichment analysis of ligand-impacted phosphoproteins and treatment-linked kinases confirmed multiple known functions of D2R signaling while also revealing novel effects, for example of MS308 on sterol regulatory element-binding protein-related gene expression. All raw data were deposited in MassIVE (MSV000089457).
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Affiliation(s)
- Deborah Wenk
- Princess
Margaret Cancer Centre, University Health
Network, 101 College
Street, Toronto, Ontario M5G 1L7, Canada
| | - Shahbaz Khan
- Princess
Margaret Cancer Centre, University Health
Network, 101 College
Street, Toronto, Ontario M5G 1L7, Canada
| | - Vladimir Ignatchenko
- Princess
Margaret Cancer Centre, University Health
Network, 101 College
Street, Toronto, Ontario M5G 1L7, Canada
| | - Harald Hübner
- Medicinal
Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Strasse 10, 91058 Erlangen, Germany
| | - Peter Gmeiner
- Medicinal
Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Strasse 10, 91058 Erlangen, Germany
| | - Dorothee Weikert
- Medicinal
Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Strasse 10, 91058 Erlangen, Germany
| | - Monika Pischetsrieder
- Food
Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Strasse 10, 91058 Erlangen, Germany
| | - Thomas Kislinger
- Princess
Margaret Cancer Centre, University Health
Network, 101 College
Street, Toronto, Ontario M5G 1L7, Canada,Department
of Medical Biophysics, University of Toronto, 101 College Street, Toronto, Ontario M5G 1L7, Canada,
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Mahmoodkhani M, Ghasemi M, Derafshpour L, Amini M, Mehranfard N. Developmental effects of early-life stress on dopamine D2 receptor and proteins involved in noncanonical D2 dopamine receptor signaling pathway in the prefrontal cortex of male rats. JOURNAL OF COMPLEMENTARY & INTEGRATIVE MEDICINE 2022; 19:697-703. [PMID: 33962496 DOI: 10.1515/jcim-2020-0539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 03/02/2021] [Indexed: 06/12/2023]
Abstract
OBJECTIVES Dopamine neurotransmission is implicated in multiple neuropsychiatric disorders, most strikingly in Parkinson's disease, bipolar disorder, attention-deficit hyperactivity disorder and schizophrenia. In addition to canonical pathway, D2-receptor (D2R) exerts some of its biological actions through regulating the activity of Akt and GSK3, which in turn were found to be altered in several psychiatric illnesses. The present study examined the impacts of maternal separation, an early-life stress model which has been associated with disturbed neurodevelopment and appearance of many psychiatric disorders, on developmental changes in dopamine concentration and the expression of D2Rs, Akt and GSK-3β in the medial prefrontal cortex (PFC; a key target of stress) in adolescent and young adult male rats. METHODS Maternal separation was performed 3 h per day from postnatal days 2 to 11. The PFC protein and dopamine contents were determined using western blotting analysis and Eliza, respectively. RESULTS Results indicated long-term increases in the prefrontal dopamine levels in stressed adolescent and young adult male rats, accompanied by significant downregulation of D2R as well as upregulation of p-Akt and GSK-3β contents in stressed adolescence compared to controls, with all protein levels that returned to control values in stressed adult rats. CONCLUSIONS Our findings suggest that early-life stress differentially modulates prefrontal D2R/Akt/GSK-3β levels during development. Since adolescence period is susceptible to the onset of specific mental illnesses, disruption of noncanonical components of D2R signaling during this critical period may have an important role in programming neurobehavioral phenotypes in adulthood and manipulations influencing Akt/GSK-3β pathway may improve the expression of specific dopamine-related behaviors and the effects of dopaminergic drugs.
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Affiliation(s)
- Maryam Mahmoodkhani
- Neurophysiology Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Maedeh Ghasemi
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Leila Derafshpour
- Neurophysiology Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Mohammad Amini
- School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Nasrin Mehranfard
- Neurophysiology Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
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Effects of Risperidone and Prenatal Poly I:C Exposure on GABA A Receptors and AKT-GSK3β Pathway in the Ventral Tegmental Area of Female Juvenile Rats. Biomolecules 2022; 12:biom12050732. [PMID: 35625659 PMCID: PMC9139019 DOI: 10.3390/biom12050732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 05/13/2022] [Accepted: 05/17/2022] [Indexed: 11/17/2022] Open
Abstract
The ventral tegmental area (VTA) in the ventral midbrain is the origin of the dopaminergic neurotransmission pathways. Although GABAA receptors and AKT-GSK3β signaling are involved in the pathophysiology of mental disorders and are modulated by antipsychotics, an unmet task is to reveal the pathological changes in these biomarkers and antipsychotic modulations in the VTA. Using a juvenile polyriboinosinic-polyribocytidylic acid (Poly I:C) psychiatric rat model, this study investigated the effects of adolescent risperidone treatment on GABAA receptors and AKT/GSK3β in the VTA. Pregnant female Sprague-Dawley rats were administered Poly I:C (5mg/kg; i.p) or saline at gestational day 15. Juvenile female offspring received risperidone (0.9 mg/kg, twice per day) or a vehicle from postnatal day 35 for 25 days. Poly I:C offspring had significantly decreased mRNA expression of GABAA receptor β3 subunits and glutamic acid decarboxylase (GAD2) in the VTA, while risperidone partially reversed the decreased GAD2 expression. Prenatal Poly I:C exposure led to increased expression of AKT2 and GSK3β. Risperidone decreased GABAA receptor β2/3, but increased AKT2 mRNA expression in the VTA of healthy rats. This study suggests that Poly I:C-elicited maternal immune activation and risperidone differentially modulate GABAergic neurotransmission and AKT-GSK3β signaling in the VTA of adolescent rats.
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Marchetti B, Giachino C, Tirolo C, Serapide MF. "Reframing" dopamine signaling at the intersection of glial networks in the aged Parkinsonian brain as innate Nrf2/Wnt driver: Therapeutical implications. Aging Cell 2022; 21:e13575. [PMID: 35262262 PMCID: PMC9009237 DOI: 10.1111/acel.13575] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 01/11/2022] [Accepted: 02/06/2022] [Indexed: 11/30/2022] Open
Abstract
Dopamine (DA) signaling via G protein-coupled receptors is a multifunctional neurotransmitter and neuroendocrine-immune modulator. The DA nigrostriatal pathway, which controls the motor coordination, progressively degenerates in Parkinson's disease (PD), a most common neurodegenerative disorder (ND) characterized by a selective, age-dependent loss of substantia nigra pars compacta (SNpc) neurons, where DA itself is a primary source of oxidative stress and mitochondrial impairment, intersecting astrocyte and microglial inflammatory networks. Importantly, glia acts as a preferential neuroendocrine-immune DA target, in turn, counter-modulating inflammatory processes. With a major focus on DA intersection within the astrocyte-microglial inflammatory network in PD vulnerability, we herein first summarize the characteristics of DA signaling systems, the propensity of DA neurons to oxidative stress, and glial inflammatory triggers dictating the vulnerability to PD. Reciprocally, DA modulation of astrocytes and microglial reactivity, coupled to the synergic impact of gene-environment interactions, then constitute a further level of control regulating midbrain DA neuron (mDAn) survival/death. Not surprisingly, within this circuitry, DA converges to modulate nuclear factor erythroid 2-like 2 (Nrf2), the master regulator of cellular defense against oxidative stress and inflammation, and Wingless (Wnt)/β-catenin signaling, a key pathway for mDAn neurogenesis, neuroprotection, and immunomodulation, adding to the already complex "signaling puzzle," a novel actor in mDAn-glial regulatory machinery. Here, we propose an autoregulatory feedback system allowing DA to act as an endogenous Nrf2/Wnt innate modulator and trace the importance of DA receptor agonists applied to the clinic as immune modifiers.
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Affiliation(s)
- Bianca Marchetti
- Department of Biomedical and Biotechnological Sciences (BIOMETEC)Pharmacology SectionMedical SchoolUniversity of CataniaCataniaItaly
- OASI Research Institute‐IRCCS, Troina (EN), ItalyTroinaItaly
| | | | - Cataldo Tirolo
- OASI Research Institute‐IRCCS, Troina (EN), ItalyTroinaItaly
| | - Maria F. Serapide
- Department of Biomedical and Biotechnological Sciences (BIOMETEC)Pharmacology SectionMedical SchoolUniversity of CataniaCataniaItaly
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Anxiety and cognitive-related effects of Δ 9-tetrahydrocannabinol (THC) are differentially mediated through distinct GSK-3 vs. Akt-mTOR pathways in the nucleus accumbens of male rats. Psychopharmacology (Berl) 2022; 239:509-524. [PMID: 34860284 DOI: 10.1007/s00213-021-06029-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 11/09/2021] [Indexed: 10/19/2022]
Abstract
RATIONALE Δ9-tetrahydrocannabinol (THC) is the primary psychoactive compound in cannabis and is responsible for cannabis-related neuropsychiatric side effects, including abnormal affective processing, cognitive and sensory filtering deficits and memory impairments. A critical neural region linked to the psychotropic effects of THC is the nucleus accumbens shell (NASh), an integrative mesocorticolimbic structure that sends and receives inputs from multiple brain areas known to be dysregulated in various disorders, including schizophrenia and anxiety-related disorders. Considerable evidence demonstrates functional differences between posterior vs. anterior NASh sub-regions in the processing of affective and cognitive behaviours influenced by THC. Nevertheless, the neuroanatomical regions and local molecular pathways responsible for these psychotropic effects are not currently understood. OBJECTIVES The objectives of this study were to characterize the effects of intra-accumbens THC in the anterior vs. posterior regions of the NASh during emotional memory formation, sensorimotor gating and anxiety-related behaviours. METHODS We performed an integrative series of translational behavioural pharmacological studies examining anxiety, sensorimotor gating and fear-related associative memory formation combined with regionally specific molecular signalling analyses in male Sprague Dawley rats. RESULTS We report that THC in the posterior NASh causes distortions in emotional salience attribution, impaired sensory filtering and memory retention and heightened anxiety, through a glycogen-synthase-kinase-3 (GSK-3)-β-catenin dependent signalling pathway. In contrast, THC in the anterior NASh produces anxiolytic effects via modulation of protein kinase B (Akt) phosphorylation states. CONCLUSIONS These findings reveal critical new insights into the neuroanatomical and molecular mechanisms associated with the differential neuropsychiatric side effects of THC in dissociable nucleus accumbens sub-regions.
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Reversing the Psychiatric Effects of Neurodevelopmental Cannabinoid Exposure: Exploring Pharmacotherapeutic Interventions for Symptom Improvement. Int J Mol Sci 2021; 22:ijms22157861. [PMID: 34360626 PMCID: PMC8346164 DOI: 10.3390/ijms22157861] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/21/2021] [Accepted: 07/22/2021] [Indexed: 12/16/2022] Open
Abstract
Neurodevelopmental exposure to psychoactive compounds in cannabis, specifically THC, is associated with a variety of long-term psychopathological outcomes. This increased risk includes a higher prevalence of schizophrenia, mood and anxiety disorders, and cognitive impairments. Clinical and pre-clinical research continues to identify a wide array of underlying neuropathophysiological sequelae and mechanisms that may underlie THC-related psychiatric risk vulnerability, particularly following adolescent cannabis exposure. A common theme among these studies is the ability of developmental THC exposure to induce long-term adaptations in the mesocorticolimbic system which resemble pathological endophenotypes associated with these disorders. This narrative review will summarize recent clinical and pre-clinical evidence that has elucidated these THC-induced developmental risk factors and examine how specific pharmacotherapeutic interventions may serve to reverse or perhaps prevent these cannabis-related risk outcomes.
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Laviolette SR. Exploring the impact of adolescent exposure to cannabinoids and nicotine on psychiatric risk: insights from translational animal models. Psychol Med 2021; 51:940-947. [PMID: 31801641 DOI: 10.1017/s0033291719003325] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Adolescence represents a highly sensitive period of mammalian neurodevelopment wherein critical synaptic and structural changes are taking place in brain regions involved in cognition, self-regulation and emotional processing. Importantly, neural circuits such as the mesocorticolimbic pathway, comprising the prefrontal cortex, sub-cortical mesolimbic dopamine system and their associated input/output centres, are particularly vulnerable to drug-related insults. Human adolescence represents a life-period wherein many individuals first begin to experiment with recreational drugs such as nicotine and cannabis, both of which are known to profoundly modulate neurochemical signalling within the mesocorticolimbic pathway and to influence both long-term and acute neuropsychiatric symptoms. While a vast body of epidemiological clinical research has highlighted the effects of adolescent exposure to drugs such as nicotine and cannabis on the developing adolescent brain, many of these studies are limited to correlative analyses and rely on retrospective self-reports from subjects, making causal interpretations difficult to discern. The use of pre-clinical animal studies can avoid these issues by allowing for precise temporal and dose-related experimental control over drug exposure during adolescence. In addition, such animal-based research has the added advantage of allowing for in-depth molecular, pharmacological, genetic and neuronal analyses of how recreational drug exposure may set up the brain for neuropsychiatric risk. This review will explore some of the advantages and disadvantages of these models, with a focus on the common, divergent and synergistic effects of adolescent nicotine and cannabis exposure on neuropsychiatric risk.
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Affiliation(s)
- Steven R Laviolette
- Addiction Research Group, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, CanadaN6A3K7
- Department of Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, CanadaN6A3K7
- Department of Psychiatry, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, CanadaN6A3K7
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9
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De Felice M, Renard J, Hudson R, Szkudlarek HJ, Pereira BJ, Schmid S, Rushlow WJ, Laviolette SR. l-Theanine Prevents Long-Term Affective and Cognitive Side Effects of Adolescent Δ-9-Tetrahydrocannabinol Exposure and Blocks Associated Molecular and Neuronal Abnormalities in the Mesocorticolimbic Circuitry. J Neurosci 2021; 41:739-750. [PMID: 33268546 PMCID: PMC7842745 DOI: 10.1523/jneurosci.1050-20.2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 09/15/2020] [Accepted: 09/22/2020] [Indexed: 11/21/2022] Open
Abstract
Chronic adolescent exposure to Δ-9-tetrahydrocannabinol (THC) is linked to elevated neuropsychiatric risk and induces neuronal, molecular and behavioral abnormalities resembling neuropsychiatric endophenotypes. Previous evidence has revealed that the mesocorticolimbic circuitry, including the prefrontal cortex (PFC) and mesolimbic dopamine (DA) pathway are particularly susceptible to THC-induced pathologic alterations, including dysregulation of DAergic activity states, loss of PFC GABAergic inhibitory control and affective and cognitive abnormalities. There are currently limited pharmacological intervention strategies capable of preventing THC-induced neuropathological adaptations. l-Theanine is an amino acid analog of l-glutamate and l-glutamine derived from various plant sources, including green tea leaves. l-Theanine has previously been shown to modulate levels of GABA, DA, and glutamate in various neural regions and to possess neuroprotective properties. Using a preclinical model of adolescent THC exposure in male rats, we report that l-theanine pretreatment before adolescent THC exposure is capable of preventing long-term, THC-induced dysregulation of both PFC and VTA DAergic activity states, a neuroprotective effect that persists into adulthood. In addition, pretreatment with l-theanine blocked THC-induced downregulation of local GSK-3 (glycogen synthase kinase 3) and Akt signaling pathways directly in the PFC, two biomarkers previously associated with cannabis-related psychiatric risk and subcortical DAergic dysregulation. Finally, l-theanine powerfully blocked the development of both affective and cognitive abnormalities commonly associated with adolescent THC exposure, further demonstrating functional and long-term neuroprotective effects of l-theanine in the mesocorticolimbic system.SIGNIFICANCE STATEMENT With the increasing trend of cannabis legalization and consumption during adolescence, it is essential to expand knowledge on the potential effects of adolescent cannabis exposure on brain development and identify potential pharmacological strategies to minimize Δ-9-tetrahydrocannabinol (THC)-induced neuropathology. Previous evidence demonstrates that adolescent THC exposure induces long-lasting affective and cognitive abnormalities, mesocorticolimbic dysregulation, and schizophrenia-like molecular biomarkers that persist into adulthood. We demonstrate for the first time that l-theanine, an amino acid analog of l-glutamate and l-glutamine, is capable of preventing long-term THC side effects. l-Theanine prevented the development of THC-induced behavioral aberrations, blocked cortical downregulation of local GSK-3 (glycogen synthase kinase 3) and Akt signaling pathways, and normalized dysregulation of both PFC and VTA DAergic activity, demonstrating powerful and functional neuroprotective effects against THC-induced developmental neuropathology.
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Affiliation(s)
- Marta De Felice
- Addiction Research Group, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 5C1, Canada
- Department of Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Justine Renard
- Addiction Research Group, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 5C1, Canada
- Department of Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Roger Hudson
- Addiction Research Group, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 5C1, Canada
- Department of Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Hanna J Szkudlarek
- Addiction Research Group, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 5C1, Canada
- Department of Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Brian J Pereira
- Addiction Research Group, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 5C1, Canada
- Department of Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Susanne Schmid
- Department of Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Walter J Rushlow
- Addiction Research Group, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 5C1, Canada
- Department of Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 3K7, Canada
- Department of Psychiatry, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Steven R Laviolette
- Addiction Research Group, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 5C1, Canada
- Department of Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 3K7, Canada
- Department of Psychiatry, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario N6A 3K7, Canada
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Uzuneser TC, Weiss EM, Dahlmanns J, Kalinichenko LS, Amato D, Kornhuber J, Alzheimer C, Hellmann J, Kaindl J, Hübner H, Löber S, Gmeiner P, Grömer TW, Müller CP. Presynaptic vesicular accumulation is required for antipsychotic efficacy in psychotic-like rats. J Psychopharmacol 2021; 35:65-77. [PMID: 33274688 PMCID: PMC7770212 DOI: 10.1177/0269881120965908] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND The therapeutic effects of antipsychotic drugs (APDs) are mainly attributed to their postsynaptic inhibitory functions on the dopamine D2 receptor, which, however, cannot explain the delayed onset of full therapeutic efficacy. It was previously shown that APDs accumulate in presynaptic vesicles during chronic treatment and are released like neurotransmitters in an activity-dependent manner triggering an auto-inhibitory feedback mechanism. Although closely mirroring therapeutic action onset, the functional consequence of the APD accumulation process remained unclear. AIMS Here we tested whether the accumulation of the APD haloperidol (HAL) is required for full therapeutic action in psychotic-like rats. METHODS We designed a HAL analog compound (HAL-F), which lacks the accumulation property of HAL, but retains its postsynaptic inhibitory action on dopamine D2 receptors. RESULTS/OUTCOMES By perfusing LysoTracker fluorophore-stained cultured hippocampal neurons, we confirmed the accumulation of HAL and the non-accumulation of HAL-F. In an amphetamine hypersensitization psychosis-like model in rats, we found that subchronic intracerebroventricularly delivered HAL (0.1 mg/kg/day), but not HAL-F (0.3-1.5 mg/kg/day), attenuates psychotic-like behavior in rats. CONCLUSIONS/INTERPRETATION These findings suggest the presynaptic accumulation of HAL may serve as an essential prerequisite for its full antipsychotic action and may explain the time course of APD action. Targeting accumulation properties of APDs may, thus, become a new strategy to improve APD action.
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Affiliation(s)
- Taygun C Uzuneser
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany,Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Canada
| | - Eva-Maria Weiss
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - Jana Dahlmanns
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - Liubov S Kalinichenko
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - Davide Amato
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany,Department of Neuroscience, Medical University of South Carolina, Charleston, USA
| | - Johannes Kornhuber
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - Christian Alzheimer
- Institute of Physiology and Pathophysiology, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - Jan Hellmann
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - Jonas Kaindl
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - Harald Hübner
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - Stefan Löber
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - Peter Gmeiner
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - Teja W Grömer
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - Christian P Müller
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany,Christian P Müller, Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander University of Erlangen-Nuremberg, Schwabachanlage 6, Erlangen 91054, Germany.
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11
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Amisulpride alleviates chronic mild stress-induced cognitive deficits: Role of prefrontal cortex microglia and Wnt/β-catenin pathway. Eur J Pharmacol 2020; 885:173411. [DOI: 10.1016/j.ejphar.2020.173411] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 07/22/2020] [Accepted: 07/23/2020] [Indexed: 12/11/2022]
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12
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Madison CA, Wellman PJ, Eitan S. Pre-exposure of adolescent mice to morphine results in stronger sensitization and reinstatement of conditioned place preference than pre-exposure to hydrocodone. J Psychopharmacol 2020; 34:771-777. [PMID: 32489137 DOI: 10.1177/0269881120926675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Opioids are commonly prescribed to treat moderate-to-severe pain. However, their use can trigger the development of opioid use disorder. A major problem in treating opioid use disorder remains the high rate of relapse. AIM The purpose of this study was to determine whether there are differences among opioids in their ability to trigger relapse after pre-exposure during adolescence. METHODS On postnatal day 33, mice were examined for the acute locomotor response to saline, morphine, or hydrocodone (5 mg/kg). They were administered with the corresponding opioid or saline during postnatal days 34-38 (20 mg/kg) and 40-44 (40 mg/kg). On postnatal day 45, they were recorded for the development of locomotor sensitization (5 mg/kg). Starting on postnatal day 55, mice were examined for the acquisition (1, 5, 10, 20, and 40 mg/kg), extinction, and drug-induced reinstatement (1, 2.5, and 5 mg/kg) of conditioned place preference. RESULTS There were no significant differences in the acute locomotor response to morphine and hydrocodone. Morphine induced significantly stronger locomotor sensitization as compared to hydrocodone. Pre-exposure to morphine, but not hydrocodone, sensitized the acquisition of conditioned place preference. There were no significant differences in extinction rates. Mice pre-exposed to morphine reinstate conditioned place preference after priming with a 1 mg/kg dose. In contrast, higher priming doses were required for reinstatement in all other experimental groups. CONCLUSIONS Adolescent mice administered with morphine develop greater sensitization to its effects and subsequently reinstate conditioned place preference more readily than mice administered with hydrocodone. This suggests higher risk for relapse after pre-exposure to morphine during adolescence as compared to hydrocodone.
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Affiliation(s)
- Caitlin A Madison
- Department of Psychological and Brain Sciences, Texas A&M University, College Station, USA
| | - Paul J Wellman
- Department of Psychological and Brain Sciences, Texas A&M University, College Station, USA
| | - Shoshana Eitan
- Department of Psychological and Brain Sciences, Texas A&M University, College Station, USA
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13
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Weissenrieder JS, Neighbors JD, Mailman RB, Hohl RJ. Cancer and the Dopamine D 2 Receptor: A Pharmacological Perspective. J Pharmacol Exp Ther 2019; 370:111-126. [PMID: 31000578 DOI: 10.1124/jpet.119.256818] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 04/16/2019] [Indexed: 01/12/2023] Open
Abstract
The dopamine D2 receptor (D2R) family is upregulated in many cancers and tied to stemness. Reduced cancer risk has been correlated with disorders such as schizophrenia and Parkinson's disease, in which dopaminergic drugs are used. D2R antagonists are reported to have anticancer efficacy in cell culture and animal models where they have reduced tumor growth, induced autophagy, affected lipid metabolism, and caused apoptosis, among other effects. This has led to several hypotheses, the most prevalent being that D2R ligands may be a novel approach to cancer chemotherapy. This hypothesis is appealing because of the large number of approved and experimental drugs of this class that could be repurposed. We review the current state of the literature and the evidence for and against this hypothesis. When the existing literature is evaluated from a pharmacological context, one of the striking findings is that the concentrations needed for cytotoxic effects of D2R antagonists are orders of magnitude higher than their affinity for this receptor. Although additional definitive studies will provide further clarity, our hypothesis is that targeting D2-like dopamine receptors may only yield useful ligands for cancer chemotherapy in rare cases.
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Affiliation(s)
- Jillian S Weissenrieder
- Biomedical Sciences Program (J.S.W.) and Departments of Medicine (J.D.N., R.J.H.) and Pharmacology (J.D.N., R.B.M., R.J.H.), Penn State College of Medicine and Penn State Cancer Institute, Hershey, Pennsylvania
| | - Jeffrey D Neighbors
- Biomedical Sciences Program (J.S.W.) and Departments of Medicine (J.D.N., R.J.H.) and Pharmacology (J.D.N., R.B.M., R.J.H.), Penn State College of Medicine and Penn State Cancer Institute, Hershey, Pennsylvania
| | - Richard B Mailman
- Biomedical Sciences Program (J.S.W.) and Departments of Medicine (J.D.N., R.J.H.) and Pharmacology (J.D.N., R.B.M., R.J.H.), Penn State College of Medicine and Penn State Cancer Institute, Hershey, Pennsylvania
| | - Raymond J Hohl
- Biomedical Sciences Program (J.S.W.) and Departments of Medicine (J.D.N., R.J.H.) and Pharmacology (J.D.N., R.B.M., R.J.H.), Penn State College of Medicine and Penn State Cancer Institute, Hershey, Pennsylvania
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14
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Uzuneser TC, Speidel J, Kogias G, Wang AL, de Souza Silva MA, Huston JP, Zoicas I, von Hörsten S, Kornhuber J, Korth C, Müller CP. Disrupted-in-Schizophrenia 1 (DISC1) Overexpression and Juvenile Immune Activation Cause Sex-Specific Schizophrenia-Related Psychopathology in Rats. Front Psychiatry 2019; 10:222. [PMID: 31057438 PMCID: PMC6465888 DOI: 10.3389/fpsyt.2019.00222] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 03/26/2019] [Indexed: 01/12/2023] Open
Abstract
Synaptic pruning is a critical refinement step during neurodevelopment, and schizophrenia has been associated with overpruning of cortical dendritic spines. Both human studies and animal models implicate disrupted-in-schizophrenia 1 (DISC1) gene as a strong susceptibility factor for schizophrenia. Accumulating evidence supports the involvement of DISC1 protein in the modulation of synaptic elimination during critical periods of neurodevelopment and of dopamine D2-receptor-mediated signaling during adulthood. In many species, synaptic pruning occurs during juvenile and adolescent periods and is mediated by microglia, which can be over-activated by an immune challenge, giving rise to overpruning. Therefore, we sought to investigate possible interactions between a transgenic DISC1 model (tgDISC1) and juvenile immune activation (JIA) by the bacterial cell wall endotoxin lipopolysaccharide on the induction of schizophrenia-related behavioral and neurochemical disruptions in adult female and male rats. We examined possible behavioral aberrations along three major symptom dimensions of schizophrenia including psychosis, social and emotional disruptions, and cognitive impairments. We detected significant gene-environment interactions in the amphetamine-induced locomotion in female animals and in the amphetamine-induced anxiety in male animals. Surprisingly, gene-environment interactions improved social memory in both male and female animals. JIA alone disrupted spatial memory and recognition memory, but only in male animals. DISC1 overexpression alone induced an improvement in sensorimotor gating, but only in female animals. Our neurochemical analyses detected sex- and manipulation-dependent changes in the postmortem monoamine content of animals. Taken together, we here report sex-specific effects of environment and genotype as well as their interaction on behavioral phenotypes and neurochemical profiles relevant for schizophrenia.
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Affiliation(s)
- Taygun C Uzuneser
- Department of Psychiatry and Psychotherapy, University Hospital, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Jil Speidel
- Department of Psychiatry and Psychotherapy, University Hospital, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Georgios Kogias
- Department of Psychiatry and Psychotherapy, University Hospital, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - An-Li Wang
- Center for Behavioral Neuroscience, Institute of Experimental Psychology, University of Düsseldorf, Düsseldorf, Germany
| | - Maria A de Souza Silva
- Center for Behavioral Neuroscience, Institute of Experimental Psychology, University of Düsseldorf, Düsseldorf, Germany
| | - Joseph P Huston
- Center for Behavioral Neuroscience, Institute of Experimental Psychology, University of Düsseldorf, Düsseldorf, Germany
| | - Iulia Zoicas
- Department of Psychiatry and Psychotherapy, University Hospital, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Stephan von Hörsten
- Department of Experimental Therapy, Preclinical Experimental Center, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Johannes Kornhuber
- Department of Psychiatry and Psychotherapy, University Hospital, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Carsten Korth
- Department of Neuropathology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Christian P Müller
- Department of Psychiatry and Psychotherapy, University Hospital, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
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15
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Mishra A, Singh S, Tiwari V, Parul, Shukla S. Dopamine D1 receptor activation improves adult hippocampal neurogenesis and exerts anxiolytic and antidepressant-like effect via activation of Wnt/β-catenin pathways in rat model of Parkinson's disease. Neurochem Int 2018; 122:170-186. [PMID: 30500462 DOI: 10.1016/j.neuint.2018.11.020] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 11/26/2018] [Accepted: 11/27/2018] [Indexed: 12/19/2022]
Abstract
Parkinson's disease (PD) is primarily characterized by midbrain dopamine depletion. Dopamine acts through dopamine receptors (D1 to D5) to regulate locomotion, motivation, pleasure, attention, cognitive functions and formation of newborn neurons, all of which are likely to be impaired in PD. Reduced hippocampal neurogenesis associated with dopamine depletion has been demonstrated in patients with PD. However, the precise mechanism to regulate multiple steps of adult hippocampal neurogenesis by dopamine receptor(s) is still unknown. In this study, we tested whether pharmacological agonism and antagonism of dopamine D1 and D2 receptor regulate nonmotor symptoms, neural stem cell (NSC) proliferation and fate specification and explored the cellular mechanism(s) underlying dopamine receptor (D1 and D2) mediated adult hippocampal neurogenesis in rat model of PD-like phenotypes. We found that single unilateral intra-medial forebrain bundle administration of 6-hydroxydopamine (6-OHDA) reduced D1 receptor level in the hippocampus. Pharmacological agonism of D1 receptor exerts anxiolytic and antidepressant-like effects as well as enhanced NSC proliferation, long-term survival and neuronal differentiation by positively regulating Wnt/β-catenin signaling pathway in hippocampus in PD rats. shRNA lentivirus mediated knockdown of Axin-2, a negative regulator of Wnt/β-catenin signaling potentially attenuated D1 receptor antagonist induced anxiety and depression-like phenotypes and impairment in adult hippocampal neurogenesis in PD rats. Our results suggest that improved nonmotor symptoms and hippocampal neurogenesis in PD rats controlled by D1-like receptors that involve the activation of Wnt/β-catenin signaling.
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Affiliation(s)
- Akanksha Mishra
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow, U.P, India; Academy of Scientific and Innovative Research, New Delhi, India
| | - Sonu Singh
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow, U.P, India
| | - Virendra Tiwari
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow, U.P, India; Academy of Scientific and Innovative Research, New Delhi, India
| | - Parul
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow, U.P, India
| | - Shubha Shukla
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow, U.P, India; Academy of Scientific and Innovative Research, New Delhi, India.
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16
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Dakir EH, Pickard A, Srivastava K, McCrudden CM, Gross SR, Lloyd S, Zhang SD, Margariti A, Morgan R, Rudland PS, El-Tanani M. The anti-psychotic drug pimozide is a novel chemotherapeutic for breast cancer. Oncotarget 2018; 9:34889-34910. [PMID: 30405882 PMCID: PMC6201850 DOI: 10.18632/oncotarget.26175] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 09/04/2018] [Indexed: 12/14/2022] Open
Abstract
Pimozide, an antipsychotic drug of the diphenylbutylpiperidine class, has been shown to suppress cell growth of breast cancer cells in vitro. In this study we further explore the inhibitory effects of this molecule in cancer cells. We found that Pimozide inhibited cell proliferation in a dose- and time-dependent manner in MDA-MB-231 breast cancer cells and A549 lung cancer cells. Furthermore, we found that Pimozide also promoted apoptosis as demonstrated by cell cycle arrest and induction of double-strand DNA breaks but did not result in any effect in the non-transformed MCF10A breast cell line. In order to shed new lights into the molecular pathways affected by Pimozide, we show that Pimozide downregulated RAN GTPase and AKT at both protein and mRNA levels and inhibited the AKT signaling pathway in MDA-MB-231 breast cancer cells. Pimozide also inhibited the epithelial mesenchymal transition and cell migration and downregulated the expression of MMPs. Administration of Pimozide showed a potent in vivo antitumor activity in MDA-MB-231 xenograft animal model and reduced the number of lung metastases by blocking vascular endothelial growth factor receptor 2. Furthermore, Pimozide inhibited myofibroblast formation as evaluated by the reduction in α-smooth muscle actin containing cells. Thus, Pimozide might inhibit tumor development by suppressing angiogenesis and by paracrine stimulation provided by host reactive stromal cells. These results demonstrate a novel in vitro and in vivo antitumor activity of Pimozide against breast and lung cancer cells and provide the proof of concept for a putative Pimozide as a novel approach for cancer therapy.
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Affiliation(s)
- El-Habib Dakir
- Center for Cancer Research and Cell Biology, Queen's University, Belfast, UK.,Instituto de Biología Molecular y Celular del Cáncer, Centro de Investigación del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Salamanca, Salamanca, Spain.,Institute of Cancer Therapeutics, University of Bradford, Bradford, UK
| | - Adam Pickard
- Center for Cancer Research and Cell Biology, Queen's University, Belfast, UK
| | - Kirtiman Srivastava
- Center for Cancer Research and Cell Biology, Queen's University, Belfast, UK
| | | | - Stephane R Gross
- School of Life and Health Sciences, Aston University, Birmingham, UK
| | - Stephen Lloyd
- School of Medicine, Animal Facility, Queen's University Belfast, Belfast, UK
| | - Shu-Dong Zhang
- Northern Ireland Centre for Stratified Medicine, Biomedical Sciences, University of Ulster, UK
| | - Andriana Margariti
- Center of Experimental Medicine, Queen's University Belfast, Belfast, UK
| | - Richard Morgan
- Institute of Cancer Therapeutics, University of Bradford, Bradford, UK
| | - Philip S Rudland
- Institute of integrative Biology, University of Liverpool, Liverpool, UK
| | - Mohamed El-Tanani
- Institute of Cancer Therapeutics, University of Bradford, Bradford, UK
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17
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Wang Y, Huang N, Li H, Liu S, Chen X, Yu S, Wu N, Bian XW, Shen HY, Li C, Xiao L. Promoting oligodendroglial-oriented differentiation of glioma stem cell: a repurposing of quetiapine for the treatment of malignant glioma. Oncotarget 2018; 8:37511-37524. [PMID: 28415586 PMCID: PMC5514926 DOI: 10.18632/oncotarget.16400] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 03/01/2017] [Indexed: 12/15/2022] Open
Abstract
As a major contributor of chemotherapy resistance and malignant recurrence, glioma stem cells (GSCs) have been proposed as a target for the treatment of gliomas. To evaluate the therapeutic potential of quetiapine (QUE), an atypical antipsychotic, for the treatment of malignant glioma, we established mouse models with GSCs-initiated orthotopic xenograft gliomas and subcutaneous xenograft tumors, using GSCs purified from glioblastoma cell line GL261. We investigated antitumor effects of QUE on xenograft gliomas and its underlying mechanisms on GSCs. Our data demonstrated that (i) QUE monotherapy can effectively suppress GSCs-initiated tumor growth; (ii) QUE has synergistic effects with temozolomide (TMZ) on glioma suppression, and importantly, QUE can effectively suppress TMZ-resistant (or -escaped) tumors generated from GSCs; (iii) mechanistically, the anti-glioma effect of QUE was due to its actions of promoting the differentiation of GSCs into oligodendrocyte (OL)-like cells and its inhibitory effect on the Wnt/β-catenin signaling pathway. Together, our findings suggest an effective approach for anti-gliomagenic treatment via targeting OL-oriented differentiation of GSCs. This also opens a door for repurposing QUE, an FDA approved drug, for the treatment of malignant glioma.
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Affiliation(s)
- Yun Wang
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Third Military Medical University, Chongqing 400038, China
| | - Nanxin Huang
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Third Military Medical University, Chongqing 400038, China
| | - Hongli Li
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Third Military Medical University, Chongqing 400038, China
| | - Shubao Liu
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Third Military Medical University, Chongqing 400038, China
| | - Xianjun Chen
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Third Military Medical University, Chongqing 400038, China
| | - Shichang Yu
- Department of Pathology, Southwest Hospital, Chongqing 400038, China
| | - Nan Wu
- Department of Neurosurgery, Southwest Hospital, Chongqing 400038, China
| | - Xiu-Wu Bian
- Department of Pathology, Southwest Hospital, Chongqing 400038, China
| | - Hai-Ying Shen
- Robert Stone Dow Neurobiology Laboratories, Legacy Research Institute, Portland, OR 97232, USA
| | - Chengren Li
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Third Military Medical University, Chongqing 400038, China
| | - Lan Xiao
- Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Third Military Medical University, Chongqing 400038, China
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18
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Renard J, Rosen LG, Loureiro M, De Oliveira C, Schmid S, Rushlow WJ, Laviolette SR. Adolescent Cannabinoid Exposure Induces a Persistent Sub-Cortical Hyper-Dopaminergic State and Associated Molecular Adaptations in the Prefrontal Cortex. Cereb Cortex 2018; 27:1297-1310. [PMID: 26733534 DOI: 10.1093/cercor/bhv335] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Considerable evidence suggests that adolescent exposure to delta-9-tetrahydrocanabinol (THC), the psychoactive component in marijuana, increases the risk of developing schizophrenia-related symptoms in early adulthood. In the present study, we used a combination of behavioral and molecular analyses with in vivo neuronal electrophysiology to compare the long-term effects of adolescent versus adulthood THC exposure in rats. We report that adolescent, but not adult, THC exposure induces long-term neuropsychiatric-like phenotypes similar to those observed in clinical populations. Thus, adolescent THC exposure induced behavioral abnormalities resembling positive and negative schizophrenia-related endophenotypes and a state of neuronal hyperactivity in the mesocorticolimbic dopamine (DA) pathway. Furthermore, we observed profound alterations in several prefrontal cortical molecular pathways consistent with sub-cortical DAergic dysregulation. Our findings demonstrate a profound dissociation in relative risk profiles for adolescent versus adulthood exposure to THC in terms of neuronal, behavioral, and molecular markers resembling neuropsychiatric pathology.
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Affiliation(s)
- Justine Renard
- Addiction Research Group.,Department of Anatomy and Cell Biology
| | - Laura G Rosen
- Addiction Research Group.,Department of Anatomy and Cell Biology
| | - Michael Loureiro
- Addiction Research Group.,Department of Anatomy and Cell Biology
| | | | | | - Walter J Rushlow
- Addiction Research Group.,Department of Anatomy and Cell Biology.,Department of Psychiatry, The Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada N6A 5C1
| | - Steven R Laviolette
- Addiction Research Group.,Department of Anatomy and Cell Biology.,Department of Psychiatry, The Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada N6A 5C1
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19
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Oliva CA, Montecinos-Oliva C, Inestrosa NC. Wnt Signaling in the Central Nervous System: New Insights in Health and Disease. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2018; 153:81-130. [PMID: 29389523 DOI: 10.1016/bs.pmbts.2017.11.018] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Since its discovery, Wnt signaling has been shown to be one of the most crucial morphogens in development and during the maturation of central nervous system. Its action is relevant during the establishment and maintenance of synaptic structure and neuronal function. In this chapter, we will discuss the most recent evidence on these aspects, and we will explore the evidence that involves Wnt signaling on other less known functions, such as in adult neurogenesis, in the generation of oscillatory neural rhythms, and in adult behavior. The dysfunction of Wnt signaling at different levels will be also discussed, in particular in those aspects that have been found to be linked with several neurodegenerative diseases and neurological disorders. Finally, we will address the possibility of Wnt signaling manipulation to treat those pathophysiological aspects.
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Affiliation(s)
- Carolina A Oliva
- Center for Aging and Regeneration (CARE-UC), Pontifical Catholic University of Chile, Santiago, Chile
| | - Carla Montecinos-Oliva
- Center for Aging and Regeneration (CARE-UC), Pontifical Catholic University of Chile, Santiago, Chile; Interdisciplinary Institute for Neuroscience (IINS), University of Bordeaux, Bordeaux, France
| | - Nibaldo C Inestrosa
- Center for Aging and Regeneration (CARE-UC), Pontifical Catholic University of Chile, Santiago, Chile; Center for Healthy Brain Ageing, University of New South Wales, Sydney, NSW, Australia; Center of Excellence in Biomedicine of Magallanes (CEBIMA), University of Magallanes, Punta Arenas, Chile.
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20
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Differences in 5-HT2A and mGlu2 Receptor Expression Levels and Repressive Epigenetic Modifications at the 5-HT2A Promoter Region in the Roman Low- (RLA-I) and High- (RHA-I) Avoidance Rat Strains. Mol Neurobiol 2017; 55:1998-2012. [PMID: 28265857 DOI: 10.1007/s12035-017-0457-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 02/13/2017] [Indexed: 01/12/2023]
Abstract
The serotonin 2A (5-HT2A) and metabotropic glutamate 2 (mGlu2) receptors regulate each other and are associated with schizophrenia. The Roman high- (RHA-I) and the Roman low- (RLA-I) avoidance rat strains present well-differentiated behavioral profiles, with the RHA-I strain emerging as a putative genetic rat model of schizophrenia-related features. The RHA-I strain shows increased 5-HT2A and decreased mGlu2 receptor binding levels in prefrontal cortex (PFC). Here, we looked for differences in gene expression and transcriptional regulation of these receptors. The striatum (STR) was included in the analysis. 5-HT2A, 5-HT1A, and mGlu2 mRNA and [3H]ketanserin binding levels were measured in brain homogenates. As expected, 5-HT2A binding was significantly increased in PFC in the RHA-I rats, while no difference in binding was observed in STR. Surprisingly, 5-HT2A gene expression was unchanged in PFC but significantly decreased in STR. mGlu2 receptor gene expression was significantly decreased in both PFC and STR. No differences were observed for the 5-HT1A receptor. Chromatin immunoprecipitation assay revealed increased trimethylation of histone 3 at lysine 27 (H3K27me3) at the promoter region of the HTR2A gene in the STR. We further looked at the Akt/GSK3 signaling pathway, a downstream point of convergence of the serotonin and glutamate system, and found increased phosphorylation levels of GSK3β at tyrosine 216 and increased β-catenin levels in the PFC of the RHA-I rats. These results reveal region-specific regulation of the 5-HT2A receptor in the RHA-I rats probably due to absence of mGlu2 receptor that may result in differential regulation of downstream pathways.
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21
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Crofton EJ, Nenov MN, Zhang Y, Scala F, Page SA, McCue DL, Li D, Hommel JD, Laezza F, Green TA. Glycogen synthase kinase 3 beta alters anxiety-, depression-, and addiction-related behaviors and neuronal activity in the nucleus accumbens shell. Neuropharmacology 2017; 117:49-60. [PMID: 28126496 DOI: 10.1016/j.neuropharm.2017.01.020] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 01/15/2017] [Accepted: 01/22/2017] [Indexed: 11/24/2022]
Abstract
Psychiatric disorders such as anxiety, depression and addiction are often comorbid brain pathologies thought to share common mechanistic biology. As part of the cortico-limbic circuit, the nucleus accumbens shell (NAcSh) plays a fundamental role in integrating information in the circuit, such that modulation of NAcSh circuitry alters anxiety, depression, and addiction-related behaviors. Intracellular kinase cascades in the NAcSh have proven important mediators of behavior. To investigate glycogen-synthase kinase 3 (GSK3) beta signaling in the NAcSh in vivo we knocked down GSK3beta expression with a novel adeno-associated viral vector (AAV2) and assessed changes in anxiety- and depression-like behavior and cocaine self-administration in GSK3beta knockdown rats. GSK3beta knockdown reduced anxiety-like behavior while increasing depression-like behavior and cocaine self-administration. Correlative electrophysiological recordings in acute brain slices were used to assess the effect of AAV-shGSK3beta on spontaneous firing and intrinsic excitability of tonically active interneurons (TANs), cells required for input and output signal integration in the NAcSh and for processing reward-related behaviors. Loose-patch recordings showed that TANs transduced by AAV-shGSK3beta exhibited reduction in tonic firing and increased spike half width. When assessed by whole-cell patch clamp recordings these changes were mirrored by reduction in action potential firing and accompanied by decreased hyperpolarization-induced depolarizing sag potentials, increased action potential current threshold, and decreased maximum rise time. These results suggest that silencing of GSK3beta in the NAcSh increases depression- and addiction-related behavior, possibly by decreasing intrinsic excitability of TANs. However, this study does not rule out contributions from other neuronal sub-types.
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Affiliation(s)
- Elizabeth J Crofton
- Center for Addiction Research, The University of Texas Medical Branch, Galveston, TX, USA; Mitchell Center for Neurodegenerative Diseases, The University of Texas Medical Branch, Galveston, TX, USA; Department of Pharmacology and Toxicology, The University of Texas Medical Branch, Galveston, TX, USA
| | - Miroslav N Nenov
- Center for Addiction Research, The University of Texas Medical Branch, Galveston, TX, USA; Mitchell Center for Neurodegenerative Diseases, The University of Texas Medical Branch, Galveston, TX, USA; Department of Pharmacology and Toxicology, The University of Texas Medical Branch, Galveston, TX, USA
| | - Yafang Zhang
- Center for Addiction Research, The University of Texas Medical Branch, Galveston, TX, USA; Mitchell Center for Neurodegenerative Diseases, The University of Texas Medical Branch, Galveston, TX, USA; Department of Pharmacology and Toxicology, The University of Texas Medical Branch, Galveston, TX, USA
| | - Federico Scala
- Center for Addiction Research, The University of Texas Medical Branch, Galveston, TX, USA; Mitchell Center for Neurodegenerative Diseases, The University of Texas Medical Branch, Galveston, TX, USA; Department of Pharmacology and Toxicology, The University of Texas Medical Branch, Galveston, TX, USA; Biophysics Graduate Program, Institute of Human Physiology, Universita Cattolica, Rome, Italy
| | - Sean A Page
- Center for Addiction Research, The University of Texas Medical Branch, Galveston, TX, USA; Mitchell Center for Neurodegenerative Diseases, The University of Texas Medical Branch, Galveston, TX, USA; Department of Pharmacology and Toxicology, The University of Texas Medical Branch, Galveston, TX, USA
| | - David L McCue
- Center for Addiction Research, The University of Texas Medical Branch, Galveston, TX, USA; Department of Pharmacology and Toxicology, The University of Texas Medical Branch, Galveston, TX, USA
| | - Dingge Li
- Center for Addiction Research, The University of Texas Medical Branch, Galveston, TX, USA; Mitchell Center for Neurodegenerative Diseases, The University of Texas Medical Branch, Galveston, TX, USA; Department of Pharmacology and Toxicology, The University of Texas Medical Branch, Galveston, TX, USA
| | - Jonathan D Hommel
- Center for Addiction Research, The University of Texas Medical Branch, Galveston, TX, USA; Department of Pharmacology and Toxicology, The University of Texas Medical Branch, Galveston, TX, USA
| | - Fernanda Laezza
- Center for Addiction Research, The University of Texas Medical Branch, Galveston, TX, USA; Mitchell Center for Neurodegenerative Diseases, The University of Texas Medical Branch, Galveston, TX, USA; Department of Pharmacology and Toxicology, The University of Texas Medical Branch, Galveston, TX, USA
| | - Thomas A Green
- Center for Addiction Research, The University of Texas Medical Branch, Galveston, TX, USA; Mitchell Center for Neurodegenerative Diseases, The University of Texas Medical Branch, Galveston, TX, USA; Department of Pharmacology and Toxicology, The University of Texas Medical Branch, Galveston, TX, USA.
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Zhang C, Gong P, Liu P, Zhou N, Zhou Y, Wang Y. Thioridazine elicits potent antitumor effects in colorectal cancer stem cells. Oncol Rep 2016; 37:1168-1174. [DOI: 10.3892/or.2016.5313] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 12/05/2016] [Indexed: 11/05/2022] Open
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Huang H, Wu K, Ma J, Du Y, Cao C, Nie Y. Dopamine D2 receptor suppresses gastric cancer cell invasion and migration via inhibition of EGFR/AKT/MMP-13 pathway. Int Immunopharmacol 2016; 39:113-120. [PMID: 27468100 DOI: 10.1016/j.intimp.2016.07.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 06/06/2016] [Accepted: 07/04/2016] [Indexed: 02/07/2023]
Abstract
Dopamine (DA), an important neurotransmitter, has been reported to play a negative role in tumor progression. DA acts its role via dopamine receptors (DRs), which can be divided into five receptor subtypes (D1R-D5R). Among these receptor subtypes, D2R has been found to inhibit IGF-I-induced gastric cancer cell growth. However, the functions of D2R in gastric cancer cell invasion remain elusive. Here, we found that D2R expression was decreased in gastric cancer cells. DA treatment dose-dependently inhibited EGF-mediated gastric cancer cell invasion and migration via D2R. Furthermore, D2R decreased EGF-mediated MMP-13 production, and attenuated EGFR and AKT activation. Together with the results that EGF promoted gastric cancer cell invasion and migration via EGFR/AKT pathway, these data indicate that DA treatment, acting via D2R, suppresses gastric cancer cell invasion and migration via inhibition of EGFR/AKT/MMP-13 pathway. Thus, our findings suggest that use of D2R agonist may have a potential therapeutic effect on gastric cancer.
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Affiliation(s)
- Hongli Huang
- Department of Gastroenterology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou 510180, China
| | - Kaiming Wu
- Gastrointestinal Surgery Center, The first Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China
| | - Jun Ma
- Department of Thoracic Surgery, The first Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China
| | - Yanlei Du
- Department of Gastroenterology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou 510180, China
| | - Chuangyu Cao
- Department of Gastroenterology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou 510180, China
| | - Yuqiang Nie
- Department of Gastroenterology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou 510180, China.
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24
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Jiang Z, Lao T, Qiu W, Polverino F, Gupta K, Guo F, Mancini JD, Naing ZZC, Cho MH, Castaldi PJ, Sun Y, Yu J, Laucho-Contreras ME, Kobzik L, Raby BA, Choi AMK, Perrella MA, Owen CA, Silverman EK, Zhou X. A Chronic Obstructive Pulmonary Disease Susceptibility Gene, FAM13A, Regulates Protein Stability of β-Catenin. Am J Respir Crit Care Med 2016; 194:185-97. [PMID: 26862784 PMCID: PMC5003213 DOI: 10.1164/rccm.201505-0999oc] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Accepted: 01/21/2016] [Indexed: 12/28/2022] Open
Abstract
RATIONALE A genetic locus within the FAM13A gene has been consistently associated with chronic obstructive pulmonary disease (COPD) in genome-wide association studies. However, the mechanisms by which FAM13A contributes to COPD susceptibility are unknown. OBJECTIVES To determine the biologic function of FAM13A in human COPD and murine COPD models and discover the molecular mechanism by which FAM13A influences COPD susceptibility. METHODS Fam13a null mice (Fam13a(-/-)) were generated and exposed to cigarette smoke. The lung inflammatory response and airspace size were assessed in Fam13a(-/-) and Fam13a(+/+) littermate control mice. Cellular localization of FAM13A protein and mRNA levels of FAM13A in COPD lungs were assessed using immunofluorescence, Western blotting, and reverse transcriptase-polymerase chain reaction, respectively. Immunoprecipitation followed by mass spectrometry identified cellular proteins that interact with FAM13A to reveal insights on FAM13A's function. MEASUREMENTS AND MAIN RESULTS In murine and human lungs, FAM13A is expressed in airway and alveolar type II epithelial cells and macrophages. Fam13a null mice (Fam13a(-/-)) were resistant to chronic cigarette smoke-induced emphysema compared with Fam13a(+/+) mice. In vitro, FAM13A interacts with protein phosphatase 2A and recruits protein phosphatase 2A with glycogen synthase kinase 3β and β-catenin, inducing β-catenin degradation. Fam13a(-/-) mice were also resistant to elastase-induced emphysema, and this resistance was reversed by coadministration of a β-catenin inhibitor, suggesting that FAM13A could increase the susceptibility of mice to emphysema development by inhibiting β-catenin signaling. Moreover, human COPD lungs had decreased protein levels of β-catenin and increased protein levels of FAM13A. CONCLUSIONS We show that FAM13A may influence COPD susceptibility by promoting β-catenin degradation.
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Affiliation(s)
- Zhiqiang Jiang
- Channing Division of Network Medicine, Department of Medicine
| | - Taotao Lao
- Channing Division of Network Medicine, Department of Medicine
| | - Weiliang Qiu
- Channing Division of Network Medicine, Department of Medicine
| | - Francesca Polverino
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
- The Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Kushagra Gupta
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - Feng Guo
- Channing Division of Network Medicine, Department of Medicine
| | - John D. Mancini
- Channing Division of Network Medicine, Department of Medicine
| | | | - Michael H. Cho
- Channing Division of Network Medicine, Department of Medicine
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - Peter J. Castaldi
- Channing Division of Network Medicine, Department of Medicine
- Division of General Internal Medicine, Department of Medicine, and
| | - Yang Sun
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - Jane Yu
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | | | - Lester Kobzik
- Department of Pathology, Brigham and Women’s Hospital, Boston, Massachusetts; and
| | - Benjamin A. Raby
- Channing Division of Network Medicine, Department of Medicine
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | | | - Mark A. Perrella
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
- Pediatric Newborn Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - Caroline A. Owen
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
- The Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Edwin K. Silverman
- Channing Division of Network Medicine, Department of Medicine
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - Xiaobo Zhou
- Channing Division of Network Medicine, Department of Medicine
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
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25
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Zhang Y, Jiang X, Qin C, Cuevas S, Jose PA, Armando I. Dopamine D2 receptors' effects on renal inflammation are mediated by regulation of PP2A function. Am J Physiol Renal Physiol 2016; 310:F128-34. [PMID: 26290374 PMCID: PMC4719046 DOI: 10.1152/ajprenal.00453.2014] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 06/15/2015] [Indexed: 01/11/2023] Open
Abstract
Lack or downregulation of the dopamine D2 receptor (D2R) results in increased renal expression of injury markers and proinflammatory factors that is independent of a blood pressure increase. This study aimed to determine the mechanisms involved in the regulation of renal inflammation by D2Rs. Silencing D2Rs in mouse renal proximal tubule cells increased the expression of the proinflammatory TNF-α, monocyte chemoattractant protein-1 (MCP-1), and IL-6. D2R downregulation also increased Akt phosphorylation and activity, and glycogen synthase kinase-3β (GSK3β) phosphorylation and cyclin D1 expression, downstream targets of Akt; however. phosphatidylinositol 3-kinase (PI3K) activity was not affected. Conversely, D2R stimulation decreased Akt and GSK3β phosphorylation and cyclin D1 expression. Increased phospho-Akt, in the absence of increased PI3K activity, may result from decreased Akt dephosphorylation. Inhibition of protein phosphatase 2A (PP2A) with okadaic acid reproduced the effects of D2R downregulation on Akt, GSK3β, and cyclin D1. The PP2A catalytic subunit and regulatory subunit PPP2R2C coimmunoprecipitated with the D2R. Basal phosphatase activity and the expression of PPP2R2C were decreased by D2R silencing that also blunted the increase in phosphatase activity induced by D2R stimulation. Similarly, silencing PPP2R2C also increased the phosphorylation of Akt and GSK3β. Moreover, downregulation of PPP2R2C resulted in increased expression of TNF-α, MCP-1, and IL-6, indicating that decreased phosphatase activity may be responsible for the D2R effect on inflammatory factors. Indeed, the increase in NF-κB reporter activity induced by D2R silencing was blunted by increasing PP2A activity with protamine. Our results show that D2R controls renal inflammation, at least in part, by modulation of the Akt pathway through effects on PP2A activity/expression.
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Affiliation(s)
- Yanrong Zhang
- Division of Nephrology, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland; Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) and Comparative Medicine Centre, Peking Union Medical Collage (PUMC), Beijing, P. R. China; and
| | - Xiaoliang Jiang
- Division of Nephrology, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland; Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) and Comparative Medicine Centre, Peking Union Medical Collage (PUMC), Beijing, P. R. China; and
| | - Chuan Qin
- Division of Nephrology, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland; Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) and Comparative Medicine Centre, Peking Union Medical Collage (PUMC), Beijing, P. R. China; and
| | - Santiago Cuevas
- Division of Nephrology, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland
| | - Pedro A Jose
- Division of Nephrology, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland; Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland
| | - Ines Armando
- Division of Nephrology, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland
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Lu M, Li J, Luo Z, Zhang S, Xue S, Wang K, Shi Y, Zhang C, Chen H, Li Z. Roles of dopamine receptors and their antagonist thioridazine in hepatoma metastasis. Onco Targets Ther 2015; 8:1543-52. [PMID: 26124671 PMCID: PMC4482370 DOI: 10.2147/ott.s77373] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Tumor metastasis is the most common cause of death and poor prognosis for cancer patients. Therapeutics that prevent tumor metastasis are the key to prolonging the lifespan of cancer patients. Cancer stem cells are believed to be critical in the metastatic process. Recently, drug screening for cancer stem cells reports that antipsychotic drugs displayed potential anticancer activity. Thioridazine, one of the antipsychotic drugs for dopamine receptors (DRs), is shown to induce the differentiation of cancer stem cells in leukemic disease and breast cancer, but it is not known if this drug would affect liver cancer. In this study, expression of DR5 was higher in tumors than in nontumor adjacent tissues, while DR1 was lower in human hepatocellular carcinoma (HCC) than those in the adjacent tissues. Other DRs were very low or undetectable. Treatment of HCC cells with thioridazine displays a dose-dependent response in HCC cell lines SNU449, LM3, and Huh7. Thioridazine treatment reduced cell viability and sphere formation of HCC cell lines through induction of G0/G1 cell cycle arrest and suppression of stemness genes CD133, OCT4, and EpCam. It also inhibited cell migration via suppression of epithelial–mesenchymal transition (EMT)-related genes such as twist2 and E-cadherin. Thioridazine-pretreated LM3 cells decreased the capacity of tumorigenesis in nude mice. Taken together, our data suggest that thioridazine may have the potential role in treatment of HCC.
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Affiliation(s)
- Meiling Lu
- Central Laboratory, The 10th People's Hospital, Tongji University, Shanghai, People's Republic of China
| | - Jinghua Li
- Central Laboratory, The 10th People's Hospital, Tongji University, Shanghai, People's Republic of China
| | - Zaili Luo
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute/Hospital, The Second Military Medical University, Shanghai, People's Republic of China ; Institution of Biomedical Sciences, Fudan University, Shanghai, People's Republic of China
| | - Shuai Zhang
- Institution of Biomedical Sciences, Fudan University, Shanghai, People's Republic of China
| | - Shaobo Xue
- Central Laboratory, The 10th People's Hospital, Tongji University, Shanghai, People's Republic of China
| | - Kesheng Wang
- Central Laboratory, The 10th People's Hospital, Tongji University, Shanghai, People's Republic of China
| | - Yan Shi
- Department of Gastroenterology, The 10th People's Hospital, Tongji University, Shanghai, People's Republic of China
| | - Cunzhen Zhang
- Institution of Biomedical Sciences, Fudan University, Shanghai, People's Republic of China
| | - Haiyang Chen
- Institution of Biomedical Sciences, Fudan University, Shanghai, People's Republic of China
| | - Zhong Li
- Central Laboratory, The 10th People's Hospital, Tongji University, Shanghai, People's Republic of China ; Zhangjiang Center for Translational Medicine, Shanghai, People's Republic of China
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27
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de Sousa RT, Zanetti MV, Talib LL, Serpa MH, Chaim TM, Carvalho AF, Brunoni AR, Busatto GF, Gattaz WF, Machado-Vieira R. Lithium increases platelet serine-9 phosphorylated GSK-3β levels in drug-free bipolar disorder during depressive episodes. J Psychiatr Res 2015; 62:78-83. [PMID: 25691093 DOI: 10.1016/j.jpsychires.2015.01.016] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 01/27/2015] [Accepted: 01/28/2015] [Indexed: 12/29/2022]
Abstract
BACKGROUND Glycogen synthase kinase-3 β (GSK3β) is an intracellular enzyme directly implicated in several neural processes relevant to bipolar disorder (BD) pathophysiology. GSK3β is also an important target for lithium and antidepressants. When phosphorylated at serine-9, GSK3β becomes inactive. Few studies evaluated serine-9 phosphorylated GSK3β (phospho-GSK3β) levels in BD subjects in vivo and no study has assessed it specifically in bipolar depression. Also, the effect of lithium monotherapy on GSK3β has never been studied in humans. METHODS In 27 patients with bipolar depression, total GSK3β and phospho-GSK3β were assessed in platelets by enzyme immunometric assay. Subjects were evaluated before and after 6 weeks of lithium treatment at therapeutic levels. Healthy subjects (n = 22) were used as a control group. RESULTS No differences in phospho-GSK3β or total GSK3β were observed when comparing drug-free BD subjects in depression and healthy controls. Baseline HAM-D scores were not correlated with phospho-GSK3β and total GSK3β levels. From baseline to endpoint, lithium treatment inactivated GSK3β by significantly increasing phospho-GSK3β levels (p = 0.010). Clinical improvement (baseline HAM-D - endpoint HAM-D) negatively correlated with the increase in phospho-GSK3β (p = 0.03). CONCLUSION The present results show that lithium inactivates platelet GSK3β in BD during mood episodes. No direct association with pathophysiology of BD was observed. Further studies are needed to clarify the role of GSK3β as a key biomarker in BD and its association with treatment response as well as the relevance of GSK3β in other neuropsychiatric disorders and as a new therapeutic target per se.
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Affiliation(s)
- Rafael T de Sousa
- Laboratory of Neuroscience, LIM-27, Institute and Department of Psychiatry, University of Sao Paulo, Brazil
| | - Marcus V Zanetti
- Laboratory of Neuroscience, LIM-27, Institute and Department of Psychiatry, University of Sao Paulo, Brazil; Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of Sao Paulo, Brazil; Laboratory of Psychiatric Neuroimaging, LIM-21, Department and Institute of Psychiatry, University of Sao Paulo, Brazil
| | - Leda L Talib
- Laboratory of Neuroscience, LIM-27, Institute and Department of Psychiatry, University of Sao Paulo, Brazil
| | - Mauricio H Serpa
- Laboratory of Psychiatric Neuroimaging, LIM-21, Department and Institute of Psychiatry, University of Sao Paulo, Brazil
| | - Tiffany M Chaim
- Laboratory of Psychiatric Neuroimaging, LIM-21, Department and Institute of Psychiatry, University of Sao Paulo, Brazil
| | - Andre F Carvalho
- Translational Psychiatry Research Group and Department of Clinical Medicine, Faculty of Medicine, Federal University of Ceará, Brazil
| | - Andre R Brunoni
- Laboratory of Neuroscience, LIM-27, Institute and Department of Psychiatry, University of Sao Paulo, Brazil
| | - Geraldo F Busatto
- Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of Sao Paulo, Brazil; Laboratory of Psychiatric Neuroimaging, LIM-21, Department and Institute of Psychiatry, University of Sao Paulo, Brazil
| | - Wagner F Gattaz
- Laboratory of Neuroscience, LIM-27, Institute and Department of Psychiatry, University of Sao Paulo, Brazil; Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of Sao Paulo, Brazil
| | - Rodrigo Machado-Vieira
- Laboratory of Neuroscience, LIM-27, Institute and Department of Psychiatry, University of Sao Paulo, Brazil; Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of Sao Paulo, Brazil; Experimental Therapeutics and Pathophysiology Branch (ETPB), National Institute of Mental Health, NIH, Bethesda, MD, USA.
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28
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Zhang K, Song H, Yang P, Dai X, Li Y, Wang L, Du J, Pan K, Zhang T. Silencing dishevelled-1 sensitizes paclitaxel-resistant human ovarian cancer cells via AKT/GSK-3β/β-catenin signalling. Cell Prolif 2015; 48:249-58. [PMID: 25643607 DOI: 10.1111/cpr.12161] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 09/30/2014] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVES Expression of dishevelled-1 (DVL1) has recently been linked to cancer progression, however, its role in resistance to cancer therapy is unclear. In this study, we aimed to explore the function of DVL1 in paclitaxel-resistant human ovarian cancer cells. MATERIALS AND METHODS The MTT assay was used to assess effects of DVL1 silencing on sensitivity of cells that were otherwise resistant to paclitaxel (Taxol). Western blotting and immunofluorescence staining were used to examine effects of DVL1 on AKT/GSK-3β/β-catenin signalling. RESULTS Dishevelled-1 was found to be over-expressed in a paclitaxel-resistant cell line derived from human ovarian cancer cell line A2780 (A2780/Taxol line) as well as parental A2780 cells. Down-regulation of DVL1 (using the inhibitor 3289-8625 or siRNA (siDVL1) against DVL1) sensitized A2780/Taxol cells to paclitaxel. Over-expression of DVL1 in A2780 cells increased protein levels of P-gp, BCRP and Bcl-2, which are known targets of β-catenin. Silencing DVL1 in A2780/Taxol cells also reduced levels of these proteins, and led to accumulation of β-catenin. In addition, DVL1 aberrantly activated AKT/GSK-3β/β-catenin signalling. Inactivation of AKT signalling attenuated DVL1-mediated inhibition of GSK-3β and accumulation of β-catenin, in both A2780 and A2780/Taxol cells. CONCLUSIONS Taken together, these results suggest that silencing DVL1 sensitized A2780/Taxol cells to paclitaxel, by down-regulating AKT/GSK-3β/β-catenin signalling, providing a novel strategy for chemosensitization of ovarian cancer to paclitaxel-induced cytotoxicity.
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Affiliation(s)
- Kun Zhang
- School of Biomedicine Sciences, Chengdu Medical College, Chengdu, 610500, China
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MicroRNAs in Schizophrenia: Implications for Synaptic Plasticity and Dopamine-Glutamate Interaction at the Postsynaptic Density. New Avenues for Antipsychotic Treatment Under a Theranostic Perspective. Mol Neurobiol 2014; 52:1771-1790. [PMID: 25394379 DOI: 10.1007/s12035-014-8962-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Accepted: 10/23/2014] [Indexed: 12/17/2022]
Abstract
Despite dopamine-glutamate aberrant interaction that has long been considered a relevant landmark of psychosis pathophysiology, several aspects of these two neurotransmitters reciprocal interaction remain to be defined. The emerging role of postsynaptic density (PSD) proteins at glutamate synapse as a molecular "lego" making a functional hub where different signals converge may add a new piece of information to understand how dopamine-glutamate interaction may work with regard to schizophrenia pathophysiology and treatment. More recently, compelling evidence suggests a relevant role for microRNA (miRNA) as a new class of dopamine and glutamate modulators with regulatory functions in the reciprocal interaction of these two neurotransmitters. Here, we aimed at addressing the following issues: (i) Do miRNAs have a role in schizophrenia pathophysiology in the context of dopamine-glutamate aberrant interaction? (ii) If miRNAs are relevant for dopamine-glutamate interaction, at what level this modulation takes place? (iii) Finally, will this knowledge open the door to innovative diagnostic and therapeutic tools? The biogenesis of miRNAs and their role in synaptic plasticity with relevance to schizophrenia will be considered in the context of dopamine-glutamate interaction, with special focus on miRNA interaction with PSD elements. From this framework, implications both for biomarkers identification and potential innovative interventions will be considered.
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30
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Basu S, Dasgupta PS. Response to the paper entitled "dopamine mobilizes mesenchymal progenitor cells through D2-class receptors and their PI3K/AKT pathway" by Mirones, et al., 2014. Stem Cells 2014; 32:3285-6. [PMID: 25183552 DOI: 10.1002/stem.1830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 07/24/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Sujit Basu
- Department of Pathology, Ohio State University, Columbus, Ohio, USA; Division of Medical Oncology, Department of Internal Medicine, Ohio State University, Columbus, Ohio, USA
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Peng Y, Hu Y, Xu S, Rong X, Li J, Li P, Wang L, Yang J, Wang X. Potassium 2-(1-hydroxypentyl)-benzoate improves memory deficits and attenuates amyloid and τ pathologies in a mouse model of Alzheimer's disease. J Pharmacol Exp Ther 2014; 350:361-74. [PMID: 24893984 DOI: 10.1124/jpet.114.213140] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by amyloid-β (Aβ) deposition and neurofibrillary tangles. Dl-PHPB [potassium 2-(1-hydroxypentyl)-benzoate], has been shown to have neuroprotective effects on cerebral ischemic, vascular dementia, and Aβ-induced animal models by inhibiting oxidative injury, neuronal apoptosis, and glial activation. The aim of the present study was to examine the effect of dl-PHPB on learning and memory in amyloid precursor protein (APP) and presenilin 1 (PS1) double-transgenic AD mouse models (APP/PS1) and the mechanisms of dl-PHPB in reducing Aβ accumulation and τ phosphorylation. Twelve-month-old APP/PS1 mice were given 30 mg/kg dl-PHPB by oral gavage for 3 months. Dl-PHPB treatment significantly improved the spatial learning and memory deficits compared with the vehicle-treated APP/PS1 mice. In the meantime, dl-PHPB obviously reduced τ hyperphosphorylation at Ser199, Thr205, and Ser396 sites in APP/PS1 mice. This reduction was accompanied by APP phosphorylation reduction and protein kinase C activation. In addition, expression of cyclin-dependent kinase and glycogen synthase kinase 3β, the most important kinases involved in τ phosphorylation, was markedly decreased by dl-PHPB treatment. Phosphorylated protein kinase B and phosphoinositide 3-kinase levels of APP/PS1 mice were significantly reduced compared with levels in wild-type mice, and dl-PHPB reversed the reduction. The effects of dl-PHPB effecting a decrease in τ phosphorylation and kinase activation were further confirmed in neuroblastoma SK-N-SH cells overexpressing wild-type human APP695. These data raised the possibility that dl-PHPB might be a promising multitarget neuronal protective agent for the treatment of AD.
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Affiliation(s)
- Ying Peng
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yanli Hu
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shaofeng Xu
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xianfang Rong
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jiang Li
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - PingPing Li
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ling Wang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jinghua Yang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiaoliang Wang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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32
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de Bartolomeis A, Buonaguro EF, Iasevoli F, Tomasetti C. The emerging role of dopamine-glutamate interaction and of the postsynaptic density in bipolar disorder pathophysiology: Implications for treatment. J Psychopharmacol 2014; 28:505-26. [PMID: 24554693 DOI: 10.1177/0269881114523864] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Aberrant synaptic plasticity, originating from abnormalities in dopamine and/or glutamate transduction pathways, may contribute to the complex clinical manifestations of bipolar disorder (BD). Dopamine and glutamate systems cross-talk at multiple levels, such as at the postsynaptic density (PSD). The PSD is a structural and functional protein mesh implicated in dopamine and glutamate-mediated synaptic plasticity. Proteins at PSD have been demonstrated to be involved in mood disorders pathophysiology and to be modulated by antipsychotics and mood stabilizers. On the other side, post-receptor effectors such as protein kinase B (Akt), glycogen synthase kinase-3 (GSK-3) and the extracellular signal-regulated kinase (Erk), which are implicated in both molecular abnormalities and treatment of BD, may interact with PSD proteins, and participate in the interplay of the dopamine-glutamate signalling pathway. In this review, we describe emerging evidence on the molecular cross-talk between dopamine and glutamate signalling in BD pathophysiology and pharmacological treatment, mainly focusing on dysfunctions in PSD molecules. We also aim to discuss future therapeutic strategies that could selectively target the PSD-mediated signalling cascade at the crossroads of dopamine-glutamate neurotransmission.
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Affiliation(s)
- Andrea de Bartolomeis
- Laboratory of Molecular and Translational Psychiatry, Department of Neuroscience, Section of Psychiatry, University Medical School of Naples "Federico II", Naples, Italy
| | - Elisabetta F Buonaguro
- Laboratory of Molecular and Translational Psychiatry, Department of Neuroscience, Section of Psychiatry, University Medical School of Naples "Federico II", Naples, Italy
| | - Felice Iasevoli
- Laboratory of Molecular and Translational Psychiatry, Department of Neuroscience, Section of Psychiatry, University Medical School of Naples "Federico II", Naples, Italy
| | - Carmine Tomasetti
- Laboratory of Molecular and Translational Psychiatry, Department of Neuroscience, Section of Psychiatry, University Medical School of Naples "Federico II", Naples, Italy
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Mu J, Xu H, Yang Y, Huang W, Xiao J, Li M, Tan Z, Ding Q, Zhang L, Lu J, Wu X, Liu Y. Thioridazine, an antipsychotic drug, elicits potent antitumor effects in gastric cancer. Oncol Rep 2014; 31:2107-14. [PMID: 24604290 DOI: 10.3892/or.2014.3068] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 02/13/2014] [Indexed: 11/06/2022] Open
Abstract
Thioridazine, an antipsychotic drug, has been reported to induce apoptosis in various types of cancer cells, with specificity on targeting cancer stem cells (CSCs). However, whether it elicits anticancer effects in gastric cancer has never been reported. In the present study, we examined the ability of thioridazine to induce cell death in the gastric cancer cell lines NCI-N87 and AGS, and detected its in vivo tumor inhibition capacity. Thioridazine elicited cytotoxic effects on NCI-N87 and AGS cells in a dose-dependent manner, and inhibited the colony formation abilitiy of the NCI-N87 and AGS cells. Thioridazine treatment induced nuclear fragmentation, increased the proportion of sub-G1 phase cells, and elevated the percentage of Annexin V-positive cells, suggesting the occurrence of apoptosis. Moreover, thioridazine induced gastric cancer cell apoptosis in a caspase-dependent manner, as shown by a decrease in the precursors of casapse-9, caspase-8 and caspase-3, and by the ability of the caspase inhibitor Z-VAD-FMK to reverse the cytotoxic effect of thioridazine. JC-1 staining further revealed that thioridazine induced gastric cancer cell apoptosis via the mitochondrial pathway. In addition, thioridazine pretreatment inhibited the growth of NCI-N87 cell-derived tumors. The present study demonstrated that the antipsychotic drug thioridazine possesses anti-gastric cancer ability through in vitro and in vivo experiments, suggesting thioridazine as a potential drug in gastric cancer therapy.
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Affiliation(s)
- Jiasheng Mu
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University school of Medicine, Shanghai 200092, P.R. China
| | - Haineng Xu
- State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, P.R. China
| | - Yu Yang
- State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, P.R. China
| | - Weidan Huang
- State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, P.R. China
| | - Jing Xiao
- College of Life Science, Henan Normal University, Xinxiang, Henan 453007, P.R. China
| | - Maolan Li
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University school of Medicine, Shanghai 200092, P.R. China
| | - Zhujun Tan
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University school of Medicine, Shanghai 200092, P.R. China
| | - Qichen Ding
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University school of Medicine, Shanghai 200092, P.R. China
| | - Lin Zhang
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University school of Medicine, Shanghai 200092, P.R. China
| | - Jianhua Lu
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University school of Medicine, Shanghai 200092, P.R. China
| | - Xiangsong Wu
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University school of Medicine, Shanghai 200092, P.R. China
| | - Yingbin Liu
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University school of Medicine, Shanghai 200092, P.R. China
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Ustione A, Piston DW, Harris PE. Minireview: Dopaminergic regulation of insulin secretion from the pancreatic islet. Mol Endocrinol 2013; 27:1198-207. [PMID: 23744894 DOI: 10.1210/me.2013-1083] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Exogenous dopamine inhibits insulin secretion from pancreatic β-cells, but the lack of dopaminergic neurons in pancreatic islets has led to controversy regarding the importance of this effect. Recent data, however, suggest a plausible physiologic role for dopamine in the regulation of insulin secretion. We review the literature underlying our current understanding of dopaminergic signaling that can down-regulate glucose-stimulated insulin secretion from pancreatic islets. In this negative feedback loop, dopamine is synthesized in the β-cells from circulating L-dopa, serves as an autocrine signal that is cosecreted with insulin, and causes a tonic inhibition on glucose-stimulated insulin secretion. On the whole animal scale, L-dopa is produced by cells in the gastrointestinal tract, and its concentration in the blood plasma increases following a mixed meal. By reviewing the outcome of certain types of bariatric surgery that result in rapid amelioration of glucose tolerance, we hypothesize that dopamine serves as an "antiincretin" signal that counterbalances the stimulatory effect of glucagon-like peptide 1.
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Affiliation(s)
- Alessandro Ustione
- Department of Molecular Physiology and Biophysics, Vanderbilt University, 702 Light Hall, Nashville, Tennessee 37232-0615, USA
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Abstract
Dopaminergic neurotransmission is thought to be involved in reward-related incentive learning and addictive behaviour. Amphetamine will alter glycogen synthase kinase-3β (GSK-3β) activity by increasing dopamine transporter efflux rates. We investigated the hypothesis that Wnt signalling will be altered in rat nucleus accumbens within 15 min of injection of amphetamine compared with saline. We isolated RNA from the nucleus accumbens and used reverse transcriptase-PCR to screen for altered Wnt expression. We found that amphetamine had no effect on Wnt5a or Wnt7a expression but increased Wnt3. We then measured protein expression of Wnt3, phosphorylated lipoprotein-related peptide 6, GSK-3β phosphorylated at serine-9 and tyrosine-216 and total β-catenin. We found that amphetamine increased Wnt3 protein expression, increased pLRP6 (threonine-1572) levels, increased β-catenin levels, increased GSK-3β phosphorylation at serine-9, consistent with inhibition of GSK-3β activity, and diminished GSK-3β phosphorylation at tyrosine-216. Our data support the hypothesis that proximate Wnt signalling is rapidly activated by amphetamine in the adult rat nucleus accumbens.
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Al Sweidi S, Morissette M, Rouillard C, Di Paolo T. Estrogen receptors and lesion-induced response of striatal dopamine receptors. Neuroscience 2013; 236:99-109. [PMID: 23357113 DOI: 10.1016/j.neuroscience.2012.12.058] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Revised: 11/26/2012] [Accepted: 12/17/2012] [Indexed: 12/15/2022]
Abstract
Neuroprotection by 17β-estradiol and an estrogen receptor (ER) agonist against 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) lesion were shown to implicate protein kinase B (Akt) signaling in mice. In order to evaluate the associated mechanisms, this study compared estrogen receptor alpha (ERα) and estrogen receptor beta (ERβ) intact or knockout (KO) and wild-type (WT) C57Bl/6 male mice following MPTP treatment of 7, 9, 11mg/kg and/or 17β-estradiol. Striatal D1 and D2 dopamine (DA) receptors were measured by autoradiography with the specific ligands [(3)H]-SCH 23390 and [(3)H]-raclopride, respectively and signaling by Western blot for Akt, glycogen synthase kinase 3β (GSK3β) and extracellular-regulated signal kinases (ERK1 and ERK2). Control ERKOβ mice had lower striatal [(3)H]-SCH 23390 specific binding than WT and ERKOα mice; both KO mice had lower [(3)H]-raclopride specific binding. Striatal D1 receptors decreased with increasing doses of MPTP in correlation with striatal DA concentrations in ERKOα mice and remained unchanged in WT and ERKOβ mice. Striatal D2 receptors decreased with increasing doses of MPTP in correlation with striatal DA concentrations in WT and ERKOα mice and increased in ERKOβ mice. In MPTP-lesioned mice, 17β-estradiol treatment increased D1 receptors in ERKOα and ERKOβ mice and D2 receptors in WT and ERKOβ mice. MPTP did not affect striatal pAkt/Akt and pGSK3β/GSK3β levels in WT and ERKOα mice, while in vehicle-treated ERKOβ mice these levels were higher and increased with MPTP lesioning. Striatal pERK1/ERK1 and pERK2/ERK2 levels showed to a lesser extent a similar pattern. In conclusion, ERs affected the response of striatal DA receptors to a MPTP lesion and post receptor signaling.
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Affiliation(s)
- S Al Sweidi
- Faculty of Pharmacy, Laval University, Quebec City, QC, Canada G1K 7P4
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Dunleavy M, Provenzano G, Henshall DC, Bozzi Y. Kainic acid-induced seizures modulate Akt (SER473) phosphorylation in the hippocampus of dopamine D2 receptor knockout mice. J Mol Neurosci 2012. [PMID: 23188702 PMCID: PMC3532719 DOI: 10.1007/s12031-012-9927-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Dopamine D2 receptor (D2R) signalling has been shown to modulate seizure-induced hippocampal cell death. D2R knockout (D2R−/−) mice are more susceptible to kainic acid (KA)-induced excitotoxicity, displaying cell death in the CA3 subfield of the hippocampus at KA doses not damaging in wild-type (WT) animals. Absence of D2R signalling in the hippocampus leads to activation (dephosphorylation) of glycogen synthase kinase 3β (GSK-3β) after KA (20 mg/kg), which is not associated with a change in the phosphorylation of the GSK-3β regulator Akt at the canonical threonine 308 residue. In the present study, we investigated alternative pathways responsible for the activation of GSK-3β in the hippocampus of the D2R−/− mice 24 h following KA-induced seizures. Here, we show that phosphorylation of Akt occurs at serine 473 (Ser473) in the CA3 region of WT but not D2R−/− mice following KA. Moreover, the CA1 subregion, which does not undergo neurodegeneration in either WT or D2R−/− mice, displays a strong induction of Akt (Ser473) phosphorylation after KA. Additionally, the vulnerability in the CA3 is not associated with changes to p38MAPK and Dishevelled activation, and β-catenin does not appear to be a downstream target of the GSK-3β. Thus, we propose that GSK-3β phosphorylation-mediated hippocampal cell survival may depend on Akt (Ser473) phosphorylation; loss of D2R-mediated signalling in the CA3 region of D2R−/− mice leads to reduced Akt (Ser473) phosphorylation rendering neurons more vulnerable to apoptosis. Further investigation is required to fully elucidate the GSK-3β targets involved in D2R-dependent response to excitotoxicity.
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Affiliation(s)
- Mark Dunleavy
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
- Laboratory of Molecular Neuropathology, Centre for Integrative Biology (CIBIO), University of Trento, Via delle Regole 101, Mattarello, 38123 Trento, Italy
| | - Giovanni Provenzano
- Laboratory of Molecular Neuropathology, Centre for Integrative Biology (CIBIO), University of Trento, Via delle Regole 101, Mattarello, 38123 Trento, Italy
| | - David C. Henshall
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Yuri Bozzi
- Laboratory of Molecular Neuropathology, Centre for Integrative Biology (CIBIO), University of Trento, Via delle Regole 101, Mattarello, 38123 Trento, Italy
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Mines MA, Jope RS. Brain region differences in regulation of Akt and GSK3 by chronic stimulant administration in mice. Cell Signal 2012; 24:1398-405. [PMID: 22434044 DOI: 10.1016/j.cellsig.2012.03.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Revised: 02/27/2012] [Accepted: 03/04/2012] [Indexed: 01/11/2023]
Abstract
Acute amphetamine administration activates glycogen synthase kinase-3 (GSK3) by reducing its inhibitory serine-phosphorylation in mouse striatum and cerebral cortex. This results from Akt inactivation and is required for certain behavioral effects of amphetamine, such as increased locomotor activity. Here we tested if regulation of Akt and GSK3 was similarly affected by longer-term administration of amphetamine, as well as of methylphenidate, since each of these is administered chronically in patients with attention deficit hyperactivity disorder (ADHD). Akt is activated by post-translational phosphorylation on Thr308, and modulated by Ser473 phosphorylation, whereas phosphorylation on Ser21/9 inhibits the two GSK3 isoforms, GSK3α and GSK3β. After eight days of amphetamine or methylphenidate treatment, striatal Akt and GSK3 were dephosphorylated similar to reported changes after acute amphetamine treatment. Oppositely, in the cerebral cortex and hippocampus Akt and GSK3 phosphorylation increased after eight days of amphetamine or methylphenidate treatment. These opposite brain region changes in Akt and GSK3 phosphorylation matched opposite changes in the association of Akt with β-arrestin and GSK3, which after eight days of amphetamine treatment were increased in the striatum and decreased in the cerebral cortex. Thus, whereas the acute dephosphorylating effect of stimulants on Akt and GSK3 in the striatum was maintained, the response switched in the cerebral cortex after eight days of amphetamine or methylphenidate treatment to cause increased phosphorylation of Akt and GSK3. These results demonstrate that prolonged administration of stimulants causes brain region-selective differences in the regulation of Akt and GSK3.
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Affiliation(s)
- Marjelo A Mines
- Department of Psychiatry and Behavioral Sciences, Miller School of Medicine, University of Miami, Miami, FL 33136, United States
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Beaulieu JM, Del'guidice T, Sotnikova TD, Lemasson M, Gainetdinov RR. Beyond cAMP: The Regulation of Akt and GSK3 by Dopamine Receptors. Front Mol Neurosci 2011; 4:38. [PMID: 22065948 PMCID: PMC3206544 DOI: 10.3389/fnmol.2011.00038] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Accepted: 10/13/2011] [Indexed: 01/11/2023] Open
Abstract
Brain dopamine receptors have been preferred targets for numerous pharmacological compounds developed for the treatment of various neuropsychiatric disorders. Recent discovery that D2 dopamine receptors, in addition to cAMP pathways, can engage also in Akt/GSK3 signaling cascade provided a new framework to understand intracellular signaling mechanisms involved in dopamine-related behaviors and pathologies. Here we review a recent progress in understanding the role of Akt, GSK3, and related signaling molecules in dopamine receptor signaling and functions. Particularly, we focus on the molecular mechanisms involved, interacting partners, role of these signaling events in the action of antipsychotics, psychostimulants, and antidepressants as well as involvement in pathophysiology of schizophrenia, bipolar disorder, and Parkinson’s disease. Further understanding of the role of Akt/GSK3 signaling in dopamine receptor functions could provide novel targets for pharmacological interventions in dopamine-related disorders.
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Affiliation(s)
- Jean-Martin Beaulieu
- Department of Psychiatry and Neuroscience, Université Laval-CRULRG Québec, QC, Canada
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