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Godoy JA, Mira RG, Inestrosa NC. Intracellular effects of lithium in aging neurons. Ageing Res Rev 2024; 99:102396. [PMID: 38942199 DOI: 10.1016/j.arr.2024.102396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 06/14/2024] [Accepted: 06/25/2024] [Indexed: 06/30/2024]
Abstract
Lithium therapy received approval during the 1970s, and it has been used for its antidepressant, antimanic, and anti-suicidal effects for acute and long-term prophylaxis and treatment of bipolar disorder (BPD). These properties have been well established; however, the molecular and cellular mechanisms remain controversial. In the past few years, many studies demonstrated that at the cellular level, lithium acts as a regulator of neurogenesis, aging, and Ca2+ homeostasis. At the molecular level, lithium modulates aging by inhibiting glycogen synthase kinase-3β (GSK-3β), and the phosphatidylinositol (PI) cycle; latter, lithium specifically inhibits inositol production, acting as a non-competitive inhibitor of inositol monophosphatase (IMPase). Mitochondria and peroxisome proliferator-activated receptor γ coactivator-1α (PGC-1α) have been related to lithium activity, and its regulation is mediated by GSK-3β degradation and inhibition. Lithium also impacts Ca2+ homeostasis in the mitochondria modulating the function of the lithium-permeable mitochondrial Na+-Ca2+exchanger (NCLX), affecting Ca2+ efflux from the mitochondrial matrix to the endoplasmic reticulum (ER). A close relationship between the protease Omi, GSK-3β, and PGC-1α has also been established. The purpose of this review is to summarize some of the intracellular mechanisms related to lithium activity and how, through them, neuronal aging could be controlled.
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Affiliation(s)
- Juan A Godoy
- Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Rodrigo G Mira
- Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Escuela de Medicina, Universidad de Magallanes, Punta Arenas, Chile
| | - Nibaldo C Inestrosa
- Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Escuela de Medicina, Universidad de Magallanes, Punta Arenas, Chile; Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.
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2
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Chen Z, Wang B, Huang Y, Wang X, Li W, Wang M. Pathogenesis or a response to lithium? A novel perspective for mitochondrial mass fluctuation of naïve T cells in patients with bipolar disorder. J Affect Disord 2024; 355:86-94. [PMID: 38521135 DOI: 10.1016/j.jad.2024.03.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 03/15/2024] [Accepted: 03/18/2024] [Indexed: 03/25/2024]
Abstract
BACKGROUND Immune imbalances are associated with the pathogenesis and pharmacological efficacy of bipolar disorder (BD). The underlying mechanisms remain largely obscure but may involve immunometabolic dysfunctions of T-lymphocytes. METHODS We investigated if inflammatory cytokines and the immunometabolic function of T-lymphocytes, including frequencies of subsets, mitochondrial mass (MM), and low mitochondrial membrane potential (MMPLow) differed between BD patients (n = 47) and healthy controls (HC, n = 43). During lithium treatment of hospitalized patients (n = 33), the association between weekly T-lymphocyte immune metabolism and clinical symptoms was analyzed, and preliminary explorations on possible mechanisms were conducted. RESULTS In comparison to HC, BD patients predominantly showed a trend toward CD4+ naïve T (Tn) activation and exhibited mitochondrial metabolic disturbances such as decreased MM and increased MMPLow. Lower CD4+ Tn-MM correlated with elevated IL-6, IL-8, and decreased IL-17 A in BD patients. With lithium treatment effective, MM of CD4+ T/Tn was negatively correlated with depression score HAMD. When lithium intolerance was present, MM of CD4+ T/Tn was positively correlated with depression score HAMD and mania score BRMS. Lithium does not mediate through the inositol depletion hypothesis, but the mRNA level of IMPA2 in peripheral blood is associated with mitochondrial function in CD8+ T cells. LIMITATIONS The cross-sectional design and short-term follow-up meant that we could not directly examine the causality of BD and immune dysregulation. CONCLUSION The altered metabolism of CD4+ Tn was strongly associated with remodeling of the inflammatory landscape in BD patients and can also be used to reflect the short-term therapeutic effects of lithium.
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Affiliation(s)
- Zhenni Chen
- Department of Laboratory Medicine, the Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
| | - Bingqi Wang
- Department of Laboratory Medicine, the Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
| | - Yiran Huang
- School of Clinical Medicine, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China
| | - Xiaofan Wang
- Department of Laboratory Medicine, the Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
| | - Wanzhen Li
- Department of Laboratory Medicine, the Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
| | - Min Wang
- Department of Laboratory Medicine, the Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China.
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Saha S, Krishnan H, Raghu P. IMPA1 dependent regulation of phosphatidylinositol 4,5-bisphosphate and calcium signalling by lithium. Life Sci Alliance 2024; 7:e202302425. [PMID: 38056909 PMCID: PMC10700560 DOI: 10.26508/lsa.202302425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 11/22/2023] [Accepted: 11/27/2023] [Indexed: 12/08/2023] Open
Abstract
Lithium (Li) is widely used as a mood stabilizer to treat bipolar affective disorder. However, the molecular targets of Li that underpin its therapeutic effect remain unresolved. Inositol monophosphatase (IMPA1) is an enzyme involved in phosphatidylinositol 4,5-bisphosphate (PIP2) resynthesis after PLC signaling. In vitro, Li inhibits IMPA1, but the relevance of this inhibition within neural cells remains unknown. Here, we report that treatment with therapeutic concentrations of Li reduces receptor-activated calcium release from intracellular stores and delays PIP2 resynthesis. These effects of Li are abrogated in IMPA1 deleted cells. We also observed that in human forebrain cortical neurons, treatment with Li reduced neuronal excitability and calcium signals. After Li treatment of human cortical neurons, transcriptome analyses revealed down-regulation of signaling by glutamate, a key excitatory neurotransmitter in the human brain. Collectively, our findings suggest that inhibition of IMPA1 by Li reduces receptor-activated PLC signaling and neuronal excitability.
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Affiliation(s)
- Sankhanil Saha
- https://ror.org/03gf8rp76 National Centre for Biological Sciences-TIFR GKVK Campus, Bangalore, India
| | - Harini Krishnan
- https://ror.org/03gf8rp76 National Centre for Biological Sciences-TIFR GKVK Campus, Bangalore, India
| | - Padinjat Raghu
- https://ror.org/03gf8rp76 National Centre for Biological Sciences-TIFR GKVK Campus, Bangalore, India
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Shim SS, Berglund K, Yu SP. Lithium: An Old Drug for New Therapeutic Strategy for Alzheimer's Disease and Related Dementia. NEURODEGENER DIS 2023; 23:1-12. [PMID: 37666228 DOI: 10.1159/000533797] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 08/23/2023] [Indexed: 09/06/2023] Open
Abstract
BACKGROUND Although Alzheimer's disease (AD) is the most common form of dementia, the effective treatment of AD is not available currently. Multiple trials of drugs, which were developed based on the amyloid hypothesis of AD, have not been highly successful to improve cognitive and other symptoms in AD patients, suggesting that it is necessary to explore additional and alternative approaches for the disease-modifying treatment of AD. The diverse lines of evidence have revealed that lithium reduces amyloid and tau pathology, attenuates neuronal loss, enhances synaptic plasticity, and improves cognitive function. Clinical studies have shown that lithium reduces the risk of AD and deters the progress of mild cognitive impairment and early AD. SUMMARY Our recent study has revealed that lithium stabilizes disruptive calcium homeostasis, and subsequently, attenuates the downstream neuropathogenic processes of AD. Through these therapeutic actions, lithium produces therapeutic effects on AD with potential to modify the disease process. This review critically analyzed the preclinical and clinical studies for the therapeutic effects of lithium on AD. We suggest that disruptive calcium homeostasis is likely to be the early neuropathological mechanism of AD, and the stabilization of disruptive calcium homeostasis by lithium would be associated with its therapeutic effects on neuropathology and cognitive deficits in AD. KEY MESSAGES Lithium is likely to be efficacious for AD as a disease-modifying drug by acting on multiple neuropathological targets including disruptive calcium homeostasis.
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Affiliation(s)
- Seong Sool Shim
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, Georgia, USA
- Mental Health Service Line, Department of Veteran's Affair, Atlanta VA Medical Center, Decatur, Georgia, USA
- Department of Veteran's Affair, Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, Decatur, Georgia, USA
| | - Ken Berglund
- Department of Veteran's Affair, Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, Decatur, Georgia, USA
- Department of Neurosurgery, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Shan Ping Yu
- Department of Veteran's Affair, Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, Decatur, Georgia, USA
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, Georgia, USA
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Pessoa ALS, Quesada AA, Nóbrega PR, Viana APO, de Oliveira KT, Figueiredo T, Santos S, Kok F. Neuropsychological Characterization of Autosomal Recessive Intellectual Developmental Disorder 59 Associated with IMPA1 (MRT59). Brain Sci 2023; 13:1048. [PMID: 37508980 PMCID: PMC10377093 DOI: 10.3390/brainsci13071048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
Biallelic loss of function of IMPA1 causes autosomal recessive intellectual developmental disorder 59 (MRT59, OMIM #617323). MRT59 has been reported to present with significant intellectual disability and disruptive behavior, but little is known about the neurocognitive pattern of those patients. Thus, the aims of this study were: (1) to assess the cognitive profile of these patients, and (2) to evaluate their functional dependence levels. Eighteen adults, aged 37 to 89 years, participated in this study: nine MRT59 patients, five heterozygous carriers and four non-carrier family members. All of them were from a consanguineous family living in Northeast Brazil. All IMPA1 patients had the (c.489_493dupGGGCT) pathogenic variant in homozygosis. For cognitive assessment, the WASI battery was applied in nine MRT59 patients and compared to heterozygous carriers and non-carrier family members. Functional dependence was evaluated using the functional independence measure (FIM). Patients showed moderate to severe intellectual disability and severe functional disabilities. Heterozygous carriers did not differ from non-carriers. MRT59 patients should be followed up by health professionals in an interdisciplinary way to understand their cognitive disabilities and functional needs properly.
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Affiliation(s)
- Andre Luiz Santos Pessoa
- Albert Sabin Children's Hospital, Fortaleza 60410-794, Brazil
- Faculty of Medicine, State University of Ceará (UECE), Fortaleza 60714-903, Brazil
| | - Andrea Amaro Quesada
- The Edson Queiroz Foundation, University of Fortaleza (UNIFOR), Fortaleza 60811-905, Brazil
| | - Paulo Ribeiro Nóbrega
- Hospital Universitário Walter Cantídio-UFC, Fortaleza 60430-372, Brazil
- Faculty of Medicine, Centro Universitário Christus, Fortaleza 60160-230, Brazil
| | | | | | - Thalita Figueiredo
- Faculty of Medicine, Federal University of Alagoas (UFAL), Maceio 57200-000, Brazil
| | - Silvana Santos
- State University of Paraíba (UEPB), Campina Grande 58429-500, Brazil
| | - Fernando Kok
- Department of Neurology, University of São Paulo (USP), São Paulo 05508-220, Brazil
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Sener EF, Dana H, Tahtasakal R, Hamurcu Z, Taheri S, Delibasi N, Mehmetbeyoglu E, Sukranli ZY, Dal F, Tufan E, Oflamaz AO, Doganyigit Z, Ozkul Y, Rassoulzadegan M. Heterozygous Cc2d1a mice show sex-dependent changes in the Beclin-1/p62 ratio with impaired prefrontal cortex and hippocampal autophagy. Prog Neuropsychopharmacol Biol Psychiatry 2023; 125:110764. [PMID: 37059290 DOI: 10.1016/j.pnpbp.2023.110764] [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: 12/19/2022] [Revised: 03/20/2023] [Accepted: 04/06/2023] [Indexed: 04/16/2023]
Abstract
Autism Spectrum Disorders (ASD) are a group of neurodevelopmental disorders characterized by repetitive behaviors, lack of social interaction and communication. CC2D1A is identified in patients as an autism risk gene. Recently, we suggested that heterozygous Cc2d1a mice exhibit impaired autophagy in the hippocampus. We now report the analysis of autophagy markers (Lc3, Beclin and p62) in different regions hippocampus, prefrontal cortex, hypothalamus and cerebellum, with an overall decrease in autophagy and changes in Beclin-1/p62 ratio in the hippocampus. We observed sex-dependent variations in transcripts and protein expression levels. Moreover, our analyses suggest that alterations in autophagy initiated in Cc2d1a heterozygous parents are variably transmitted to offspring, even when the offspring's genotype is wild type. Aberration in the autophagy mechanism may indirectly contribute to induce synapse alteration in the ASD brain.
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Affiliation(s)
- Elif Funda Sener
- Erciyes University, Medical Faculty Department of Medical Biology, 38039 Kayseri, Turkey; Erciyes University, Medical Faculty Department of Medical Biology, 38039 Kayseri, Turkey; Erciyes University, Genome and Stem Cell Center, Kayseri, Turkey; Erciyes University, Genome and Stem Cell Center (GENKOK), 38039 Kayseri, Turkey.
| | - Halime Dana
- Erciyes University, Medical Faculty Department of Medical Biology, 38039 Kayseri, Turkey; Erciyes University, Medical Faculty Department of Medical Biology, 38039 Kayseri, Turkey; Erciyes University, Genome and Stem Cell Center, Kayseri, Turkey; Erciyes University, Genome and Stem Cell Center (GENKOK), 38039 Kayseri, Turkey
| | - Reyhan Tahtasakal
- Erciyes University, Medical Faculty Department of Medical Biology, 38039 Kayseri, Turkey; Erciyes University, Genome and Stem Cell Center (GENKOK), 38039 Kayseri, Turkey
| | - Zuhal Hamurcu
- Erciyes University, Medical Faculty Department of Medical Biology, 38039 Kayseri, Turkey; Erciyes University, Medical Faculty Department of Medical Biology, 38039 Kayseri, Turkey; Erciyes University, Genome and Stem Cell Center, Kayseri, Turkey; Erciyes University, Genome and Stem Cell Center (GENKOK), 38039 Kayseri, Turkey
| | - Serpil Taheri
- Erciyes University, Medical Faculty Department of Medical Biology, 38039 Kayseri, Turkey; Erciyes University, Genome and Stem Cell Center, Kayseri, Turkey
| | - Nesrin Delibasi
- Cappodoccia University, Cappadocia Vocational School Medical Laboratory Techniques Programme, Nevsehir, Turkey; Cardiff University, School of Medicine Department of Hematology, Division of Cancer and Genetics, Cardiff, UK.
| | - Ecmel Mehmetbeyoglu
- Erciyes University, Medical Faculty Department of Medical Biology, 38039 Kayseri, Turkey; Erciyes University, Genome and Stem Cell Center (GENKOK), 38039 Kayseri, Turkey.
| | - Zeynep Yilmaz Sukranli
- Erciyes University, Medical Faculty Department of Medical Biology, 38039 Kayseri, Turkey; Erciyes University, Genome and Stem Cell Center (GENKOK), 38039 Kayseri, Turkey
| | - Fatma Dal
- Erciyes University, Medical Faculty Department of Medical Biology, 38039 Kayseri, Turkey; Erciyes University, Genome and Stem Cell Center (GENKOK), 38039 Kayseri, Turkey
| | - Esra Tufan
- Erciyes University, Medical Faculty Department of Medical Biology, 38039 Kayseri, Turkey; Erciyes University, Genome and Stem Cell Center (GENKOK), 38039 Kayseri, Turkey
| | - Asli Okan Oflamaz
- Bozok University, Medical Faculty Department of Histology and Embryology, 66100 Yozgat, Turkey
| | - Zuleyha Doganyigit
- Bozok University, Medical Faculty Department of Histology and Embryology, 66100 Yozgat, Turkey
| | - Yusuf Ozkul
- Erciyes University, Medical Faculty Department of Medical Biology, 38039 Kayseri, Turkey; Erciyes University, Medical Faculty Department of Medical Genetics, Kayseri, Turkey; Erciyes University, Genome and Stem Cell Center (GENKOK), 38039 Kayseri, Turkey.
| | - Minoo Rassoulzadegan
- Erciyes University, Medical Faculty Department of Medical Biology, 38039 Kayseri, Turkey; Université Cote d'Azur (UCA), INSERM-CNRS, IRCAN, 06107 Nice, France; Erciyes University, Genome and Stem Cell Center (GENKOK), 38039 Kayseri, Turkey.
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Puglisi-Allegra S, Lazzeri G, Busceti CL, Giorgi FS, Biagioni F, Fornai F. Lithium engages autophagy for neuroprotection and neuroplasticity: translational evidence for therapy. Neurosci Biobehav Rev 2023; 148:105148. [PMID: 36996994 DOI: 10.1016/j.neubiorev.2023.105148] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/23/2023] [Accepted: 03/26/2023] [Indexed: 03/30/2023]
Abstract
Here an overview is provided on therapeutic/neuroprotective effects of Lithium (Li+) in neurodegenerative and psychiatric disorders focusing on the conspicuous action of Li+ through autophagy. The effects on the autophagy machinery remain the key molecular mechanisms to explain the protective effects of Li+ for neurodegenerative diseases, offering potential therapeutic strategies for the treatment of neuropsychiatric disorders and emphasizes a crossroad linking autophagy, neurodegenerative disorders, and mood stabilization. Sensitization by psychostimulants points to several mechanisms involved in psychopathology, most also crucial in neurodegenerative disorders. Evidence shows the involvement of autophagy and metabotropic Glutamate receptors-5 (mGluR5) in neurodegeneration due to methamphetamine neurotoxicity as well as in neuroprotection, both in vitro and in vivo models. More recently, Li+ was shown to modulate autophagy through its action on mGluR5, thus pointing to an additional way of autophagy engagement by Li+ and to a substantial role of mGluR5 in neuroprotection related to neural e neuropsychiatry diseases. We propose Li+ engagement of autophagy through the canonical mechanisms of autophagy machinery and through the intermediary of mGluR5.
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Chen Q, Shen L, Li S. Emerging role of inositol monophosphatase in cancer. Biomed Pharmacother 2023; 161:114442. [PMID: 36841024 DOI: 10.1016/j.biopha.2023.114442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 02/22/2023] [Accepted: 02/22/2023] [Indexed: 02/27/2023] Open
Abstract
Inositol monophosphatase (IMPase) is an enzyme with two homologs-IMPA1 and IMPA2-that is responsible for dephosphorylating myo-inositol monophosphate to generate myo-inositol. IMPase has been extensively studied in neuropsychiatric diseases and is regarded as a susceptibility gene. Recently, emerging evidence has implied that IMPase is linked to cancer development and progression and correlates with patient survival outcomes. Interestingly, whether it acts as a tumor-promoter or tumor-suppressor is inconsistent among different research studies. In this review, we summarize the latest findings on IMPase in cancer, focusing on exploring the underlying mechanisms for its pro- and anticancer roles. In addition, we discuss the potential methods of IMPase regulation in cancer cells and the possible approaches for IMPase intervention in clinical practice.
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Affiliation(s)
- Qian Chen
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Liangfang Shen
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Shan Li
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China.
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Does treatment with autophagy-enhancers and/or ROS-scavengers alleviate behavioral and neurochemical consequences of low-dose rotenone-induced mild mitochondrial dysfunction in mice? Mol Psychiatry 2023; 28:1667-1678. [PMID: 36690794 DOI: 10.1038/s41380-023-01955-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 01/04/2023] [Accepted: 01/10/2023] [Indexed: 01/24/2023]
Abstract
Bipolar-disorder's pathophysiology and the mechanism by which medications exert their beneficial effect is yet unknown, but others' and our data implicate patients' brain mitochondrial-dysfunction and its amendment by mood-stabilizers. We recently designed a novel mouse bipolar-disorder-like model using chronic administration of a low-dose of the oxidative-phosphorylation complex I inhibitor, rotenone. Four and eight weeks rotenone treatment induced manic- and depressive-like behavior, respectively, accompanied by mood-related neurochemical changes. Here we aimed to investigate whether each of the autophagy-enhancers lithium (a mood-stabilizer), trehalose and resveratrol and/or each of the reactive oxygen species (ROS)-scavengers, resveratrol and N-acetylcystein and/or the combinations lithium+resveratrol or trehalose+N-acetylcystein, can ameliorate behavioral and neurochemical consequences of neuronal mild mitochondrial-dysfunction. We observed that lithium, trehalose and N-acetylcystein reversed rotenone-induced manic-like behavior as well as deviations in protein levels of mitochondrial complexes and the autophagy marker LC3-II. This raises the possibility that mild mitochondrial-dysfunction accompanied by impaired autophagy and a very mild increase in ROS levels are related to predisposition to manic-like behavior. On the other hand, although, as expected, most of the drugs tested eliminated the eight weeks rotenone-induced increase in protein levels of all hippocampal mitochondrial complexes, only lithium ubiquitously ameliorated the depressive-like behaviors. We cautiously deduce that aberrant autophagy and/or elevated ROS levels are not involved in predisposition to the depressive phase of bipolar-like behavior. Rather, that amending the depressive-like characteristics requires different mitochondria-related interventions. The latter might be antagonizing N-methyl-D-aspartate receptors (NMDARs), thus protecting from disruption of mitochondrial calcium homeostasis and its detrimental consequences. In conclusion, our findings suggest that by-and-large, among the autophagy-enhancers and ROS-scavengers tested, lithium is the most effective in counteracting rotenone-induced changes. Trehalose and N-acetylcystein may also be effective in attenuating manic-like behavior.
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Bojja SL, Singh N, Kolathur KK, Rao CM. What is the Role of Lithium in Epilepsy? Curr Neuropharmacol 2022; 20:1850-1864. [PMID: 35410603 PMCID: PMC9886805 DOI: 10.2174/1570159x20666220411081728] [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: 07/06/2021] [Revised: 02/26/2022] [Accepted: 04/01/2022] [Indexed: 11/22/2022] Open
Abstract
Lithium is a well-known FDA-approved treatment for bipolar and mood disorders. Lithium has been an enigmatic drug with multifaceted actions involving various neurotransmitters and intricate cell signalling cascades. Recent studies highlight the neuroprotective and neurotrophic actions of lithium in amyotrophic lateral sclerosis, Alzheimer's disease, intracerebral hemorrhage, and epilepsy. Of note, lithium holds a significant interest in epilepsy, where the past reports expose its non-specific proconvulsant action, followed lately by numerous studies for anti-convulsant action. However, the exact mechanism of action of lithium for any of its effects is still largely unknown. The present review integrates findings from several reports and provides detailed possible mechanisms of how a single molecule exhibits marked pro-epileptogenic as well as anti-convulsant action. This review also provides clarity regarding the safety of lithium therapy in epileptic patients.
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Affiliation(s)
| | | | | | - Chamallamudi Mallikarjuna Rao
- Address correspondence to this author at the Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka-576104, India; E-mails: ,
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Taskaeva I, Gogaeva I, Shatruk A, Bgatova N. Lithium Enhances Autophagy and Cell Death in Skin Melanoma: An Ultrastructural and Immunohistochemical Study. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2022; 28:1-9. [PMID: 35592888 DOI: 10.1017/s1431927622000745] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Lithium is an inhibitor of glycogen synthase kinase 3 beta, which is traditionally used in the treatment of bipolar disorders and has antitumor effects. The aim of the current study was to determine if lithium salt causes autophagy and apoptosis in skin melanoma cells to enhance cell death. Light microscopy, transmission electron microscopy, immunohistochemistry, and immunofluorescence were used to study the mechanism of action of lithium carbonate in B16 melanoma cells in vivo. Proliferating cell nuclear antigen immunofluorescence assay revealed that the proliferation of B16 melanoma cells was suppressed by lithium treatment for 7 days. Electron microscopy demonstrated a significant increase in the number of autophagic vacuoles in lithium-treated cells relative to control. In addition, levels of autophagy markers LC3 beta and LAMP1 found in lithium-treated tumor xenografts were higher than levels of these markers in the control tumors. Lithium induced caspase-3 expression and apoptotic cell death in tumor cells. Thus, lithium carbonate is the compound that inhibits cell proliferation and stimulates cell death in melanoma cells through induction of autophagy and apoptosis. Stimulation of autophagy by lithium could contribute to the development of autophagic cell death in tumor cells.
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Affiliation(s)
- Iuliia Taskaeva
- Laboratory of Ultrastructural Research, Research Institute of Clinical and Experimental Lymphology - Branch of the Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Timakova str. 2, 630060 Novosibirsk, Russia
| | - Izabella Gogaeva
- Laboratory of Ultrastructural Research, Research Institute of Clinical and Experimental Lymphology - Branch of the Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Timakova str. 2, 630060 Novosibirsk, Russia
| | - Anastasia Shatruk
- Laboratory of Ultrastructural Research, Research Institute of Clinical and Experimental Lymphology - Branch of the Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Timakova str. 2, 630060 Novosibirsk, Russia
| | - Nataliya Bgatova
- Laboratory of Ultrastructural Research, Research Institute of Clinical and Experimental Lymphology - Branch of the Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Timakova str. 2, 630060 Novosibirsk, Russia
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WEI HF, ANCHIPOLOVSKY S, VERA R, LIANG G, CHUANG DM. Potential mechanisms underlying lithium treatment for Alzheimer's disease and COVID-19. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2022; 26:2201-2214. [PMID: 35363371 PMCID: PMC9173589 DOI: 10.26355/eurrev_202203_28369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Disruption of intracellular Ca2+ homeostasis plays an important role as an upstream pathology in Alzheimer's disease (AD), and correction of Ca2+ dysregulation has been increasingly proposed as a target of future effective disease-modified drugs for treating AD. Calcium dysregulation is also an upstream pathology for the COVID-19 virus SARS-CoV-2 infection and replication, leading to host cell damage. Clinically available drugs that can inhibit the disturbed intracellular Ca2+ homeostasis have been repurposed to treat COVID-19 patients. This narrative review aims at exploring the underlying mechanism by which lithium, a first line drug for the treatment of bipolar disorder, inhibits Ca2+ dysregulation and associated downstream pathology in both AD and COVID-19. It is suggested that lithium can be repurposed to treat AD patients, especially those afflicted with COVID-19.
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Affiliation(s)
- H.-F. WEI
- Department of Anaesthesiology and Critical Care, University of Pennsylvania, Philadelphia, PA, USA
| | - S. ANCHIPOLOVSKY
- Department of Anaesthesiology and Critical Care, University of Pennsylvania, Philadelphia, PA, USA
| | - R. VERA
- Department of Anaesthesiology and Critical Care, University of Pennsylvania, Philadelphia, PA, USA
| | - G. LIANG
- Department of Anaesthesiology and Critical Care, University of Pennsylvania, Philadelphia, PA, USA
| | - D.-M. CHUANG
- Intramural Research Program, National Institute of Mental Health, NIH, Bethesda, MD, USA
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13
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Pottie E, Stove CP. In vitro assays for the functional characterization of (psychedelic) substances at the serotonin receptor 5-HT 2A R. J Neurochem 2022; 162:39-59. [PMID: 34978711 DOI: 10.1111/jnc.15570] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 12/24/2021] [Accepted: 12/29/2021] [Indexed: 12/20/2022]
Abstract
Serotonergic psychedelics are substances that induce alterations in mood, perception, and thought, and have the activation of serotonin (5-HT) 2A receptors (5-HT2A Rs) as a main pharmacological mechanism. Besides their appearance on the (illicit) drug market, e.g. as new psychoactive substances, their potential therapeutic application is increasingly explored. This group of substances demonstrates a broad structural variety, leading to insufficiently described structure-activity relationships, hence illustrating the need for better functional characterization. This review therefore elaborates on the in vitro molecular techniques that have been used the most abundantly for the characterization of (psychedelic) 5-HT2A R agonists. More specifically, this review covers assays to monitor the canonical G protein signaling pathway (e.g. measuring G protein recruitment/activation, inositol phosphate accumulation, or Ca2+ mobilization), assays to monitor non-canonical G protein signaling (such as arachidonic acid release), assays to monitor β-arrestin recruitment or signaling, and assays to monitor receptor conformational changes. In particular, focus lies on the mechanism behind the techniques, and the specific advantages and challenges that are associated with these. Additionally, several variables are discussed that one should consider when attempting to compare functional outcomes from different studies, both linked to the specific assay mechanism and linked to its specific execution, as these may heavily impact the assay outcome.
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Affiliation(s)
- Eline Pottie
- Laboratory of Toxicology, Faculty of Pharmaceutical Sciences, Department of Bioanalysis, Ghent University, Ghent, Belgium
| | - Christophe P Stove
- Laboratory of Toxicology, Faculty of Pharmaceutical Sciences, Department of Bioanalysis, Ghent University, Ghent, Belgium
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14
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Guan PP, Cao LL, Yang Y, Wang P. Calcium Ions Aggravate Alzheimer's Disease Through the Aberrant Activation of Neuronal Networks, Leading to Synaptic and Cognitive Deficits. Front Mol Neurosci 2021; 14:757515. [PMID: 34924952 PMCID: PMC8674839 DOI: 10.3389/fnmol.2021.757515] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 11/04/2021] [Indexed: 12/11/2022] Open
Abstract
Alzheimer’s disease (AD) is a neurodegenerative disease that is characterized by the production and deposition of β-amyloid protein (Aβ) and hyperphosphorylated tau, leading to the formation of β-amyloid plaques (APs) and neurofibrillary tangles (NFTs). Although calcium ions (Ca2+) promote the formation of APs and NFTs, no systematic review of the mechanisms by which Ca2+ affects the development and progression of AD has been published. Therefore, the current review aimed to fill the gaps between elevated Ca2+ levels and the pathogenesis of AD. Specifically, we mainly focus on the molecular mechanisms by which Ca2+ affects the neuronal networks of neuroinflammation, neuronal injury, neurogenesis, neurotoxicity, neuroprotection, and autophagy. Furthermore, the roles of Ca2+ transporters located in the cell membrane, endoplasmic reticulum (ER), mitochondria and lysosome in mediating the effects of Ca2+ on activating neuronal networks that ultimately contribute to the development and progression of AD are discussed. Finally, the drug candidates derived from herbs used as food or seasoning in Chinese daily life are summarized to provide a theoretical basis for improving the clinical treatment of AD.
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Affiliation(s)
- Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Long-Long Cao
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Yi Yang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
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15
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Inositol monophosphatase 1 (IMPA1) mutation in intellectual disability patients impairs neurogenesis but not gliogenesis. Mol Psychiatry 2021; 26:3558-3571. [PMID: 32839513 DOI: 10.1038/s41380-020-00862-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 07/27/2020] [Accepted: 07/30/2020] [Indexed: 11/09/2022]
Abstract
A homozygous mutation in the inositol monophosphatase 1 (IMPA1) gene was recently identified in nine individuals with severe intellectual disability (ID) and disruptive behavior. These individuals belong to the same family from Northeastern Brazil, which has 28 consanguineous marriages and 59 genotyped family members. IMPA1 is responsible for the generation of free inositol from de novo biosynthesis and recycling from inositol polyphosphates and participates in the phosphatidylinositol signaling pathway. To understand the role of IMPA1 deficiency in ID, we generated induced pluripotent stem cells (iPSCs) from patients and neurotypical controls and differentiated these into hippocampal dentate gyrus-like neurons and astrocytes. IMPA1-deficient neuronal progenitor cells (NPCs) revealed substantial deficits in proliferation and neurogenic potential. At low passage NPCs (P1 to P3), we observed cell cycle arrest, apoptosis, progressive change to a glial morphology and reduction in neuronal differentiation. These observations were validated by rescuing the phenotype with myo-inositol supplemented media during differentiation of patient-derived iPSCs into neurons and by the reduction of neurogenic potential in control NPCs-expressing shIMPA1. Transcriptome analysis showed that NPCs and neurons derived from ID patients have extensive deregulation of gene expression affecting pathways necessary for neurogenesis and upregulation of gliogenic genes. IMPA1 deficiency did not affect cell cycle progression or survival in iPSCs and glial progenitor cells or astrocyte differentiation. Therefore, this study shows that the IMPA1 mutation specifically affects NPC survival and neuronal differentiation.
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16
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Uddin MN, Elahi M, Shimonaka S, Kakuta S, Ishiguro K, Motoi Y, Hattori N. Strain-specific clearance of seed-dependent tau aggregation by lithium-induced autophagy. Biochem Biophys Res Commun 2021; 543:65-71. [PMID: 33517128 DOI: 10.1016/j.bbrc.2020.12.113] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Accepted: 12/22/2020] [Indexed: 01/06/2023]
Abstract
Different conformational strains of tau have been implicated in the clinicopathological heterogeneity of tauopathies. In this study, we hypothesized that distinct strains are degraded in a different manner. Lithium, a drug for bipolar disorder, had previously been reported to reduce aggregation-prone protein content by promoting autophagy. Here, we assessed the effects of lithium on tau aggregates using different tauopathy brain seeds. SH-SY5Y cells were transfected with C-terminal tau fragment Tau-CTF24 (residues 243-441), and Alzheimer's disease (AD), progressive supranuclear palsy (PSP), and corticobasal degeneration (CBD) brain seeds were introduced. After 48-h lithium treatment, sarkosyl-insoluble fractions were prepared. Lithium treatment was found to reduce the amount of insoluble tau and p62, and increase LC3-II levels along with the number of autophagic vacuoles in AD-seeded cells. The effects were lower in case of CBD seeds, and comparable between PSP and AD seeds. An inhibitor of myo-inositol monophosphatase (IMPase) also demonstrated similar effects. Overall, the study suggested that aggregated tau protein is degraded by lithium-induced autophagy, influencing IMPase in a strain-specific manner.
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Affiliation(s)
- Mohammad Nasir Uddin
- Department of Diagnosis, Prevention and Treatment of Dementia, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Montasir Elahi
- Department of Diagnosis, Prevention and Treatment of Dementia, Graduate School of Medicine, Juntendo University, Tokyo, Japan; Department of Neurology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Shotaro Shimonaka
- Department of Diagnosis, Prevention and Treatment of Dementia, Graduate School of Medicine, Juntendo University, Tokyo, Japan; Research Institute for Diseases of Old Age, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Soichiro Kakuta
- Laboratory of Morphology and Image Analysis, Research Support Center, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Koichi Ishiguro
- Department of Neurology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Yumiko Motoi
- Department of Diagnosis, Prevention and Treatment of Dementia, Graduate School of Medicine, Juntendo University, Tokyo, Japan; Department of Neurology, Graduate School of Medicine, Juntendo University, Tokyo, Japan; Research Institute for Diseases of Old Age, Graduate School of Medicine, Juntendo University, Tokyo, Japan.
| | - Nobutaka Hattori
- Department of Diagnosis, Prevention and Treatment of Dementia, Graduate School of Medicine, Juntendo University, Tokyo, Japan; Department of Neurology, Graduate School of Medicine, Juntendo University, Tokyo, Japan; Research Institute for Diseases of Old Age, Graduate School of Medicine, Juntendo University, Tokyo, Japan
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17
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Is There Justification to Treat Neurodegenerative Disorders by Repurposing Drugs? The Case of Alzheimer's Disease, Lithium, and Autophagy. Int J Mol Sci 2020; 22:ijms22010189. [PMID: 33375448 PMCID: PMC7795249 DOI: 10.3390/ijms22010189] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 12/16/2020] [Accepted: 12/23/2020] [Indexed: 12/11/2022] Open
Abstract
Lithium is the prototype mood-stabilizer used for acute and long-term treatment of bipolar disorder. Cumulated translational research of lithium indicated the drug's neuroprotective characteristics and, thereby, has raised the option of repurposing it as a drug for neurodegenerative diseases. Lithium's neuroprotective properties rely on its modulation of homeostatic mechanisms such as inflammation, mitochondrial function, oxidative stress, autophagy, and apoptosis. This myriad of intracellular responses are, possibly, consequences of the drug's inhibition of the enzymes inositol-monophosphatase (IMPase) and glycogen-synthase-kinase (GSK)-3. Here we review lithium's neurobiological properties as evidenced by its neurotrophic and neuroprotective properties, as well as translational studies in cells in culture, in animal models of Alzheimer's disease (AD) and in patients, discussing the rationale for the drug's use in the treatment of AD.
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18
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Scholes HM, Cryar A, Kerr F, Sutherland D, Gethings LA, Vissers JPC, Lees JG, Orengo CA, Partridge L, Thalassinos K. Dynamic changes in the brain protein interaction network correlates with progression of Aβ42 pathology in Drosophila. Sci Rep 2020; 10:18517. [PMID: 33116184 PMCID: PMC7595221 DOI: 10.1038/s41598-020-74748-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 08/18/2020] [Indexed: 12/13/2022] Open
Abstract
Alzheimer's disease (AD), the most prevalent form of dementia, is a progressive and devastating neurodegenerative condition for which there are no effective treatments. Understanding the molecular pathology of AD during disease progression may identify new ways to reduce neuronal damage. Here, we present a longitudinal study tracking dynamic proteomic alterations in the brains of an inducible Drosophila melanogaster model of AD expressing the Arctic mutant Aβ42 gene. We identified 3093 proteins from flies that were induced to express Aβ42 and age-matched healthy controls using label-free quantitative ion-mobility data independent analysis mass spectrometry. Of these, 228 proteins were significantly altered by Aβ42 accumulation and were enriched for AD-associated processes. Network analyses further revealed that these proteins have distinct hub and bottleneck properties in the brain protein interaction network, suggesting that several may have significant effects on brain function. Our unbiased analysis provides useful insights into the key processes governing the progression of amyloid toxicity and forms a basis for further functional analyses in model organisms and translation to mammalian systems.
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Affiliation(s)
- Harry M Scholes
- Institute of Structural and Molecular Biology, University College London, London, UK
| | - Adam Cryar
- Institute of Structural and Molecular Biology, University College London, London, UK
| | - Fiona Kerr
- Institute of Healthy Ageing, University College London, London, UK
- Department of Biological and Biomedical Sciences, School of Health and Life Sciences, Glasgow Caledonian University, Glasgow, UK
| | - David Sutherland
- Institute of Structural and Molecular Biology, University College London, London, UK
| | | | | | - Jonathan G Lees
- Institute of Structural and Molecular Biology, University College London, London, UK
- Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, UK
| | - Christine A Orengo
- Institute of Structural and Molecular Biology, University College London, London, UK.
| | - Linda Partridge
- Institute of Healthy Ageing, University College London, London, UK.
- Max Planck Institute for Biology of Ageing, Cologne, Germany.
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19
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Role of myo-inositol during skotomorphogenesis in Arabidopsis. Sci Rep 2020; 10:17329. [PMID: 33060662 PMCID: PMC7567114 DOI: 10.1038/s41598-020-73677-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 09/21/2020] [Indexed: 11/08/2022] Open
Abstract
Myo-inositol is a ubiquitous metabolite of plants. It is synthesized by a highly conserved enzyme L-myo-inositol phosphate synthase (MIPS; EC 5.5.1.4). Myo-inositol is well characterized during abiotic stress tolerance but its role during growth and development is unclear. In this study, we demonstrate that the apical hook maintenance and hypocotyl growth depend on myo-inositol. We discovered the myo-inositol role during hook formation and its maintenance via ethylene pathway in Arabidopsis by supplementation assays and qPCR. Our results suggest an essential requirement of myo-inositol for mediating the ethylene response and its interaction with brassinosteroid to regulate the skotomorphogenesis. A model is proposed outlining how MIPS regulates apical hook formation and hypocotyl growth.
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20
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Agam G, Taylor Z, Vainer E, Golan HM. The influence of choline treatment on behavioral and neurochemical autistic-like phenotype in Mthfr-deficient mice. Transl Psychiatry 2020; 10:316. [PMID: 32948746 PMCID: PMC7501861 DOI: 10.1038/s41398-020-01002-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 09/03/2020] [Accepted: 09/07/2020] [Indexed: 12/22/2022] Open
Abstract
Imbalanced one carbon metabolism and aberrant autophagy is robustly reported in patients with autism. Polymorphism in the gene methylenetetrahydrofolate reductase (Mthfr), encoding for a key enzyme in this pathway is associated with an increased risk for autistic-spectrum-disorders (ASDs). Autistic-like core and associated behaviors have been described, with contribution of both maternal and offspring Mthfr+/- genotype to the different domains of behavior. Preconception and prenatal supplementation with methyl donor rich diet to human subjects and mice reduced the risk for developing autism and autistic-like behavior, respectively. Here we tested the potential of choline supplementation to Mthfr-deficient mice at young-adulthood to reduce behavioral and neurochemical changes reminiscent of autism characteristics. We show that offspring of Mthfr+/- mothers, whether wildtype or heterozygote, exhibit autistic-like behavior, altered brain p62 protein levels and LC3-II/LC3-I levels ratio, both, autophagy markers. Choline supplementation to adult offspring of Mthfr+/- mothers for 14 days counteracted characteristics related to repetitive behavior and anxiety both in males and in females and improved social behavior solely in male mice. Choline treatment also normalized deviant cortical levels of the autophagy markers measured in male mice. The results demonstrate that choline supplementation even at adulthood, not tested previously, to offspring of Mthfr-deficient mothers, attenuates the autistic-like phenotype. If this proof of concept is replicated it might promote translation of these results to treatment recommendation for children with ASDs bearing similar genetic/metabolic make-up.
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Affiliation(s)
- Galila Agam
- grid.7489.20000 0004 1937 0511Faculty of Health Sciences, Department of Clinical Biochemistry and Pharmacology and Psychiatry Research Unit, Ben-Gurion University of the Negev and Mental Health Center, Beer-Sheva, Israel ,grid.7489.20000 0004 1937 0511Zlotowski Center for Neurosciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Zoe Taylor
- grid.7489.20000 0004 1937 0511Faculty of Health Sciences, Department of Physiology and Cell Biology, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Ella Vainer
- grid.7489.20000 0004 1937 0511Faculty of Health Sciences, Department of Clinical Biochemistry and Pharmacology and Psychiatry Research Unit, Ben-Gurion University of the Negev and Mental Health Center, Beer-Sheva, Israel
| | - Hava M. Golan
- grid.7489.20000 0004 1937 0511Zlotowski Center for Neurosciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel ,grid.7489.20000 0004 1937 0511Faculty of Health Sciences, Department of Physiology and Cell Biology, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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21
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Singh N, Serres F, Toker L, Sade Y, Blackburn V, Batra AS, Saiardi A, Agam G, Belmaker RH, Sharp T, Vasudevan SR, Churchill GC. Effects of the putative lithium mimetic ebselen on pilocarpine-induced neural activity. Eur J Pharmacol 2020; 883:173377. [PMID: 32687920 DOI: 10.1016/j.ejphar.2020.173377] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 07/10/2020] [Accepted: 07/13/2020] [Indexed: 01/21/2023]
Abstract
Lithium, commonly used to treat bipolar disorder, potentiates the ability of the muscarinic agonist pilocarpine to induce seizures in rodents. As this potentiation by lithium is reversed by the administration of myo-inositol, the potentiation may be mediated by inhibition of inositol monophosphatase (IMPase), a known target of lithium. Recently, we demonstrated that ebselen is a 'lithium mimetic' in regard to behaviours in both mice and man. Ebselen inhibits IMPase in vitro and lowers myo-inositol in vivo in the brains of mice and men, making ebselen the only known inhibitor of IMPase, other than lithium, that penetrates the blood-brain barrier. Our objective was to determine the effects of ebselen on sensitization to pilocarpine-induced seizures and neural activity. We administered ebselen at different doses and time intervals to mice, followed by injection of a sub-seizure dose of pilocarpine. We assessed seizure and neural activity by a subjective seizure rating scale, by monitoring tremors, and by induction of the immediate early gene c-fos. In contrast to lithium, ebselen did not potentiate the ability of pilocarpine to induce seizures. Unexpectedly, ebselen inhibited pilocarpine-induced tremor as well as pilocarpine-induced increases in c-fos mRNA levels. Both lithium and ebselen inhibit a common target, IMPase, but only lithium potentiates pilocarpine-induced seizures, consistent with their polypharmacology at diverse molecular targets. We conclude that ebselen does not potentiate pilocarpine-induced seizures and instead, reduces pilocarpine-mediated neural activation. This lack of potentiation of muscarinic sensitization may be one reason for the lack of side-effects observed with ebselen treatment clinically.
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Affiliation(s)
- Nisha Singh
- Department of Pharmacology, University of Oxford, Oxford, UK.
| | - Florence Serres
- Department of Pharmacology, University of Oxford, Oxford, UK
| | - Lilah Toker
- Department of Clinical Biochemistry and Pharmacology and Psychiatry Research Unit, Faculty of Health Sciences and Mental Health Centre, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Yeala Sade
- Department of Clinical Biochemistry and Pharmacology and Psychiatry Research Unit, Faculty of Health Sciences and Mental Health Centre, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | | | | | - Adolfo Saiardi
- Medical Research Council Laboratory for Molecular Cell Biology, University College London, UK
| | - Galila Agam
- Department of Clinical Biochemistry and Pharmacology and Psychiatry Research Unit, Faculty of Health Sciences and Mental Health Centre, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Robert H Belmaker
- Department of Clinical Biochemistry and Pharmacology and Psychiatry Research Unit, Faculty of Health Sciences and Mental Health Centre, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Trevor Sharp
- Department of Pharmacology, University of Oxford, Oxford, UK
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22
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A novel function of IMPA2, plays a tumor-promoting role in cervical cancer. Cell Death Dis 2020; 11:371. [PMID: 32409648 PMCID: PMC7224180 DOI: 10.1038/s41419-020-2507-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 04/10/2020] [Accepted: 04/14/2020] [Indexed: 12/19/2022]
Abstract
Discovery of genes and molecular mechanism involved in cervical cancer development would promote the prevention and treatment. By comparing gene expression profiles of cervical carcinoma in situ (CCIS) and adjacent normal tissues, we identified a potential cancer-promoting gene, IMPA2. This study aimed to elucidate the role of IMPA2 and underlying molecular mechanisms in cervical cancer progression. To do this expression of IMPA2 was compared between human cervical cancer and corresponding adjacent normal cervical tissues firstly. CCK-8 assay, clone formation assay, wound healing assay, transwell assay, and tumor formation in nude mice were performed to demonstrate the effect of IMPA2 in cervical cancer proliferation and metastasis. Further proteomic profiling and western blotting explored the molecular pathway involved in the IMPA2-regulating process. The results showed that IMPA2 gene expression was upregulated in cervical cancer. Consistently, silencing of IMPA2 suppressed tumor formation in BALB/c nude mice. Short hairpin RNA (shRNA)-mediated IMPA2 silencing significantly inhibited proliferation and colony-forming abilities of cervical cancer cells, while IMPA2 overexpression had little impact. Also, IMPA2 silencing suppressed cellular migration, but overexpression promoted migration. Proteomics analysis revealed the involvement of mitogen-activated protein kinase (MAPK) pathway in tumor-promoting action of IMPA2. Significantly, the inhibition of IMPA2 activated ERK phosphorylation, and its inhibitory effects can be restored by using selective ERK inhibitor, FR180204. In conclusion, IMPA2 acts as an oncogene in the proliferation and migration of cervical cancer. IMPA2 downregulated ERK phosphorylation to promote cervical cancer. These findings identify a new mechanism underlying cervical cancer and suggest a regulating effect of IMPA2 in MAPK signaling pathway.
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23
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Jupp B, Sawiak SJ, van der Veen B, Lemstra S, Toschi C, Barlow RL, Pekcec A, Bretschneider T, Nicholson JR, Robbins TW, Dalley JW. Diminished Myoinositol in Ventromedial Prefrontal Cortex Modulates the Endophenotype of Impulsivity. Cereb Cortex 2020; 30:3392-3402. [PMID: 31897490 PMCID: PMC7197196 DOI: 10.1093/cercor/bhz317] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 11/24/2019] [Accepted: 11/28/2019] [Indexed: 02/02/2023] Open
Abstract
Maladaptive impulsivity manifests in a variety of disorders, including attention-deficit hyperactivity disorder (ADHD), depression, and substance use disorder. However, the etiological mechanisms of impulsivity remain poorly understood. In the present study, we used in-vivo proton magnetic resonance spectroscopy (1H-MRS) to investigate neurometabolite content in the prefrontal cortex (PFC) and striatum of rats exhibiting low- versus high-impulsive (LI, HI) behavior on a visual attentional task. We validated our 1H-MRS findings using regionally resolved ex-vivo mass spectroscopy, transcriptomics, and site-directed RNA interference in the ventromedial PFC. We report a significant reduction in myoinositol levels in the PFC but not the striatum of HI rats compared with LI rats. Reduced myoinositol content was localized to the infralimbic (IL) cortex, where significant reductions in transcript levels of key proteins involved in the synthesis and recycling of myoinositol (IMPase1) were also present. Knockdown of IMPase1in the IL cortex increased impulsivity in nonimpulsive rats when the demand on inhibitory response control was increased. We conclude that diminished myoinositol levels in ventromedial PFC causally mediate a specific form of impulsivity linked to vulnerability for stimulant addiction in rodents. Myoinositol and related signaling substrates may thus offer novel opportunities for treating neuropsychiatric disorders comorbid with impulsive symptomology.
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Affiliation(s)
- Bianca Jupp
- Department of Psychology, University of Cambridge, Cambridge CB2 3EB, UK
| | - Steve J Sawiak
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
| | | | - Suzanne Lemstra
- Department of Psychology, University of Cambridge, Cambridge CB2 3EB, UK
| | - Chiara Toschi
- Department of Psychology, University of Cambridge, Cambridge CB2 3EB, UK
| | - Rebecca L Barlow
- Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riss 88397, Germany
| | - Anton Pekcec
- Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riss 88397, Germany
| | - Tom Bretschneider
- Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riss 88397, Germany
| | - Janet R Nicholson
- Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riss 88397, Germany
| | - Trevor W Robbins
- Department of Psychology, University of Cambridge, Cambridge CB2 3EB, UK
| | - Jeffrey W Dalley
- Department of Psychology, University of Cambridge, Cambridge CB2 3EB, UK,Department of Psychiatry, Addenbrooke’s Hospital, University of Cambridge, Cambridge CB2 2QQ, UK,Address correspondence to Professor Jeffrey W. Dalley, Department of Psychology, University of Cambridge, Downing St, Cambridge CB2 3EB, UK.
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24
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Moreira J, Noé G, Rangarajan S, Courtin C, Etain B, Geoffroy PA, Laplanche JL, Vidal M, Bellivier F, Marie-Claire C. Lithium effects on serine-threonine kinases activity: High throughput kinomic profiling of lymphoblastoid cell lines from excellent-responders and non-responders bipolar patients. World J Biol Psychiatry 2020; 21:317-324. [PMID: 29893160 DOI: 10.1080/15622975.2018.1487078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Objectives: Lithium is the leading mood stabiliser for maintenance treatment in bipolar disorder (BD). However, response to lithium is heterogeneous with more than 60% of patients experiencing partial or no response. In vitro and in vivo molecular studies have reported the implication of kinases in the pathophysiology of BD.Methods: Since kinases are putative targets for lithium therapeutic action, we conducted the first pilot study using kinase array technology to evaluate the global serine/threonine kinases (STK) profiles in cell lines from BD I subtype patients classified as lithium excellent-responders (ER) and non-responder (NR) to lithium treatment.Results: We found significant differences in the basal STK profiles between ER and NR to lithium. We also tested lithium influence on the global STK profile and found no significant difference between ER vs NR cell lines.Conclusions: The results obtained in this exploratory study suggest that multiplex kinase activity profiling could provide a complementary approach in the study of biomarkers of therapeutic response in BD.
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Affiliation(s)
- Jeverson Moreira
- Variabilité de réponse aux psychotropes, INSERM U1144/Faculté de Pharmacie de Paris, Université Paris Descartes, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Gaëlle Noé
- AP-HP, Hôpital Cochin, Biologie du medicament-Toxicologie, Université Paris Descartes, Paris, France.,UMR8638 CNRS, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | | | - Cindie Courtin
- Variabilité de réponse aux psychotropes, INSERM U1144/Faculté de Pharmacie de Paris, Université Paris Descartes, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Bruno Etain
- Variabilité de réponse aux psychotropes, INSERM U1144/Faculté de Pharmacie de Paris, Université Paris Descartes, Université Paris Diderot, Sorbonne Paris Cité, Paris, France.,AP-HP, GH Saint-Louis - Lariboisière - F. Widal, Pôle de Psychiatrie et de Médecine Addictologique, Paris, France.,Fondation FondaMental, Créteil, France
| | - Pierre A Geoffroy
- Variabilité de réponse aux psychotropes, INSERM U1144/Faculté de Pharmacie de Paris, Université Paris Descartes, Université Paris Diderot, Sorbonne Paris Cité, Paris, France.,AP-HP, GH Saint-Louis - Lariboisière - F. Widal, Pôle de Psychiatrie et de Médecine Addictologique, Paris, France.,Fondation FondaMental, Créteil, France
| | - Jean-Louis Laplanche
- Variabilité de réponse aux psychotropes, INSERM U1144/Faculté de Pharmacie de Paris, Université Paris Descartes, Université Paris Diderot, Sorbonne Paris Cité, Paris, France.,Département de Biochimie and Biologie moléculaire, AP-HP, GH Saint-Louis - Lariboisière - F. Widal, Paris, France
| | - Michel Vidal
- AP-HP, Hôpital Cochin, Biologie du medicament-Toxicologie, Université Paris Descartes, Paris, France.,UMR8638 CNRS, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Frank Bellivier
- Variabilité de réponse aux psychotropes, INSERM U1144/Faculté de Pharmacie de Paris, Université Paris Descartes, Université Paris Diderot, Sorbonne Paris Cité, Paris, France.,AP-HP, GH Saint-Louis - Lariboisière - F. Widal, Pôle de Psychiatrie et de Médecine Addictologique, Paris, France.,Fondation FondaMental, Créteil, France
| | - Cynthia Marie-Claire
- Variabilité de réponse aux psychotropes, INSERM U1144/Faculté de Pharmacie de Paris, Université Paris Descartes, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
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25
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Niemeyer C, Matosin N, Kaul D, Philipsen A, Gassen NC. The Role of Cathepsins in Memory Functions and the Pathophysiology of Psychiatric Disorders. Front Psychiatry 2020; 11:718. [PMID: 32793006 PMCID: PMC7393989 DOI: 10.3389/fpsyt.2020.00718] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 07/08/2020] [Indexed: 01/27/2023] Open
Abstract
Cathepsins are proteases with functions in cellular homeostasis, lysosomal degradation and autophagy. Their role in the development of neurodegenerative diseases has been extensively studied. It is well established that impairment of proper cathepsin function plays a crucial role in the pathophysiology of neurodegenerative diseases, and in recent years a role for cathepsins in mental disorders has emerged given the involvement of cathepsins in memory function, hyperactivity, and in depression- and anxiety-like behavior. Here we review putative cathepsin functions with a special focus on their role in the pathophysiology of psychiatric diseases. Specifically, cathepsins are crucial for maintaining cellular homeostasis, particularly as part of the autophagy machinery of neural strategies underlying acute stress response. Disruption of cathepsin functions can lead to psychiatric diseases such as major depressive disease (MDD), bipolar disorder, and schizophrenia. Specifically, cathepsins can be excreted via a process called secretory autophagy. Thereby, they are able to regulate extracellular factors such as brain-derived neurotrophic factor and perlecan c-terminal fragment LG3 providing maintenance of neuronal homeostasis and mediating neuronal plasticity in response to acute stress or trauma. In addition, impairment of proper cathepsin function can result in impaired synaptic transmission by compromised recycling and biogenesis of synaptic vesicles. Taken together, further investigations on cathepsin functions and stress response, neuroplasticity, and synaptic transmission will be of great interest in understanding the pathophysiology of psychiatric disorders.
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Affiliation(s)
- Christine Niemeyer
- Neurohomeostasis Research Group, Department of Psychiatry and Psychotherapy, University Hospital Bonn, Bonn, Germany
| | - Natalie Matosin
- Faculty of Science, Medicine and Health, Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW, Australia.,Molecular Horizons, School of Chemistry and Molecular Biosciences, University of Wollongong, Wollongong, NSW, Australia.,Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Munich, Germany
| | - Dominic Kaul
- Faculty of Science, Medicine and Health, Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW, Australia.,Molecular Horizons, School of Chemistry and Molecular Biosciences, University of Wollongong, Wollongong, NSW, Australia
| | - Alexandra Philipsen
- Neurohomeostasis Research Group, Department of Psychiatry and Psychotherapy, University Hospital Bonn, Bonn, Germany
| | - Nils C Gassen
- Neurohomeostasis Research Group, Department of Psychiatry and Psychotherapy, University Hospital Bonn, Bonn, Germany
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26
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Taskaeva I, Bgatova N, Gogaeva I. Lithium effects on vesicular trafficking in hepatocellular carcinoma cells. Ultrastruct Pathol 2019; 43:301-311. [PMID: 31826700 DOI: 10.1080/01913123.2019.1701167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Hepatocellular carcinoma (HCC) is one of the most commonly malignant tumors worldwide, characterized by the presence of many heterogeneous molecular cell events that contribute to tumor growth and progression. Endocytic processes are intimately involved in various pathological conditions, including cancer, since they interface with various cellular signaling programs. The ability of lithium to induce cell death and autophagy and affect cell proliferation and intracellular signaling has been shown in various experimental tumor models. The aim of this study was to evaluate the effects of lithium on vesicular transport in hepatocellular carcinoma cells. Using transmission electron microscopy we have characterized the endocytic apparatus in hepatocellular carcinoma-29 (HCC-29) cells in vivo and detailed changes in endocytotic vesicles after 20 mM lithium carbonate administration. Immunofluorescent analysis was used to quantify cells positive for EEA1-positive early endosomes, Rab11-positive recycling endosomes and Rab7-positive late endosomes. Lithium treatment caused an increase in EEA1- and Rab11-positive structures and a decrease in Rab7-positive vesicles. Thus, lithium affects diverse endocytic pathways in HCC-29 cells which may modulate growth and development of hepatocellular carcinoma.
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Affiliation(s)
- Iuliia Taskaeva
- Laboratory of Ultrastructural Research, Research Institute of Clinical and Experimental Lymphology - Branch of the Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia.,Laboratory of Boron-Neutron Capture Therapy, Department of Physics, Novosibirsk State University, Novosibirsk, Russia
| | - Nataliya Bgatova
- Laboratory of Ultrastructural Research, Research Institute of Clinical and Experimental Lymphology - Branch of the Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Izabella Gogaeva
- Laboratory of Ultrastructural Research, Research Institute of Clinical and Experimental Lymphology - Branch of the Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
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27
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Roles for the Endoplasmic Reticulum in Regulation of Neuronal Calcium Homeostasis. Cells 2019; 8:cells8101232. [PMID: 31658749 PMCID: PMC6829861 DOI: 10.3390/cells8101232] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 10/01/2019] [Accepted: 10/03/2019] [Indexed: 02/06/2023] Open
Abstract
By influencing Ca2+ homeostasis in spatially and architecturally distinct neuronal compartments, the endoplasmic reticulum (ER) illustrates the notion that form and function are intimately related. The contribution of ER to neuronal Ca2+ homeostasis is attributed to the organelle being the largest reservoir of intracellular Ca2+ and having a high density of Ca2+ channels and transporters. As such, ER Ca2+ has incontrovertible roles in the regulation of axodendritic growth and morphology, synaptic vesicle release, and neural activity dependent gene expression, synaptic plasticity, and mitochondrial bioenergetics. Not surprisingly, many neurological diseases arise from ER Ca2+ dyshomeostasis, either directly due to alterations in ER resident proteins, or indirectly via processes that are coupled to the regulators of ER Ca2+ dynamics. In this review, we describe the mechanisms involved in the establishment of ER Ca2+ homeostasis in neurons. We elaborate upon how changes in the spatiotemporal dynamics of Ca2+ exchange between the ER and other organelles sculpt neuronal function and provide examples that demonstrate the involvement of ER Ca2+ dyshomeostasis in a range of neurological and neurodegenerative diseases.
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28
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Ultrastructural Changes in Hepatocellular Carcinoma-29 Cells after Treatment with Lithium Carbonate. Bull Exp Biol Med 2019; 167:87-90. [PMID: 31177458 DOI: 10.1007/s10517-019-04467-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Indexed: 12/29/2022]
Abstract
We studied the effect of lithium carbonate on hepatocellular carcinoma-29 cells in CBA male mice after injection in a dose of 20 mM along the tumor periphery. Transmission electron microscopy revealed a decrease in the volume density of the granular endoplasmic reticulum in the cell cytoplasm and an increase in the total numerical and volume density of autophagosomes and autolysosomes and zones of destruction of intracellular organelles. The ability of lithium carbonate to activate intracellular degradation processes in tumor cells and to stimulate cell death can be used to develop new combined strategies in the chemotherapy for hepatocellular carcinoma.
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29
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Bar-Yosef T, Damri O, Agam G. Dual Role of Autophagy in Diseases of the Central Nervous System. Front Cell Neurosci 2019; 13:196. [PMID: 31191249 PMCID: PMC6548059 DOI: 10.3389/fncel.2019.00196] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 04/18/2019] [Indexed: 12/14/2022] Open
Abstract
Autophagy is a vital lysosomal degradation and recycling pathway in the eukaryotic cell, responsible for maintaining an intricate balance between cell survival and cell death, necessary for neuronal survival and function. This dual role played by autophagy raises the question whether this process is a protective or a destructive pathway, the contributor of neuronal cell death or a failed attempt to repair aberrant processes? Deregulated autophagy at different steps of the pathway, whether excessive or downregulated, has been proposed to be associated with neurodegenerative disorders such as Alzheimer's-, Huntington's-, and Parkinson's-disease, known for their intracellular accumulation of protein aggregates. Recent observations of impaired autophagy also appeared in psychiatric disorders such as schizophrenia and bipolar disorder suggesting an additional contribution to the pathophysiology of mental illness. Here we review the current understanding of autophagy's role in various neuropsychiatric disorders and, hitherto, the prevailing new potential autophagy-related therapeutic strategies for their treatment.
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Affiliation(s)
- Tamara Bar-Yosef
- Department of Clinical Biochemistry and Pharmacology and Psychiatry Research Unit, Faculty of Health Sciences, Ben-Gurion University of the Negev and Mental Health Center, Beersheba, Israel
| | - Odeya Damri
- Department of Clinical Biochemistry and Pharmacology and Psychiatry Research Unit, Faculty of Health Sciences, Ben-Gurion University of the Negev and Mental Health Center, Beersheba, Israel
| | - Galila Agam
- Department of Clinical Biochemistry and Pharmacology and Psychiatry Research Unit, Faculty of Health Sciences, Ben-Gurion University of the Negev and Mental Health Center, Beersheba, Israel
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30
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Walker CP, Pessoa ALS, Figueiredo T, Rafferty M, Melo US, Nóbrega PR, Murphy N, Kok F, Zatz M, Santos S, Cho RY. Loss-of-function mutation in inositol monophosphatase 1 (IMPA1) results in abnormal synchrony in resting-state EEG. Orphanet J Rare Dis 2019; 14:3. [PMID: 30616629 PMCID: PMC6322245 DOI: 10.1186/s13023-018-0977-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 12/11/2018] [Indexed: 12/14/2022] Open
Abstract
Background Dysregulation of the inositol cycle is implicated in a wide variety of human diseases, including developmental defects and neurological diseases. A homozygous frameshift mutation in IMPA1, coding for the enzyme inositol monophosphatase 1 (IMPase), has recently been associated with severe intellectual disability (ID) in a geographically isolated consanguineous family in Northeastern Brazil (Figueredo et al., 2016). However, the neurophysiologic mechanisms that mediate the IMPA1 mutation and associated ID phenotype have not been characterized. To this end, resting EEG (eyes-open and eyes-closed) was collected from the Figueredo et al. pedigree. Quantitative EEG measures, including mean power, dominant frequency and dominant frequency variability, were investigated for allelic associations using multivariate family-based association test using generalized estimating equations. Results We found that the IMPA1 mutation was associated with relative decreases in frontal theta band power as well as altered alpha-band variability with no regional specificity during the eyes-open condition. For the eyes-closed condition, there was altered dominant theta frequency variability in the central and parietal regions. Conclusions These findings represent the first human in vivo phenotypic assessment of brain function disturbances associated with a loss-of-function IMPA1 mutation, and thus an important first step towards an understanding the pathophysiologic mechanisms of intellectual disability associated with the mutation that affects this critical metabolic pathway.
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Affiliation(s)
- Christopher P Walker
- Graduate School of Biomedical Sciences, University of Texas Health Science Center at Houston, Houston, TX, USA.
| | - Andre L S Pessoa
- Hospital Infantil Albert Sabin, Fortaleza, Brazil.,Universidade Estadual do Ceará-UECE, Fortaleza, Brazil
| | - Thalita Figueiredo
- Human Genome and Stem Cell Research Center, Department of Genetics and Evolutionary Biology, Instituto de Biociências, Universidade de São Paulo (USP), São Paulo, SP, 05508-090, Brazil
| | - Megan Rafferty
- Department of Psychiatry, Baylor College of Medicine, Houston, TX, USA
| | - Uirá S Melo
- Human Genome and Stem Cell Research Center, Department of Genetics and Evolutionary Biology, Instituto de Biociências, Universidade de São Paulo (USP), São Paulo, SP, 05508-090, Brazil
| | | | - Nicholas Murphy
- Department of Psychiatry, Baylor College of Medicine, Houston, TX, USA
| | - Fernando Kok
- Human Genome and Stem Cell Research Center, Department of Genetics and Evolutionary Biology, Instituto de Biociências, Universidade de São Paulo (USP), São Paulo, SP, 05508-090, Brazil
| | - Mayana Zatz
- Human Genome and Stem Cell Research Center, Department of Genetics and Evolutionary Biology, Instituto de Biociências, Universidade de São Paulo (USP), São Paulo, SP, 05508-090, Brazil
| | - Silvana Santos
- Department of Biology, State University of Paraíba (UEPB), Campina Grande, PB, Brazil
| | - Raymond Y Cho
- Department of Psychiatry, Baylor College of Medicine, Houston, TX, USA
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Barkus C, Ferland JMN, Adams WK, Churchill GC, Cowen PJ, Bannerman DM, Rogers RD, Winstanley CA, Sharp T. The putative lithium-mimetic ebselen reduces impulsivity in rodent models. J Psychopharmacol 2018; 32:1018-1026. [PMID: 29986609 DOI: 10.1177/0269881118784876] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
BACKGROUND Deficits in impulse control feature in many psychiatric conditions including bipolar disorder, suicidality and addictions. Lithium lowers impulsivity in clinical populations and decreases pathological gambling in experimental medicine studies, but suffers from adverse effects, poor compliance and a low therapeutic index. AIMS Recently we identified that the neuroprotective agent ebselen, which is reportedly safe in humans, inhibited inositol monophosphatase (IMPase), a candidate lithium mechanism. Ebselen also reduced 5-HT receptor (5-HT2A) function which predicts impulsivity lowering properties. Here we investigated the effect of ebselen in rat models of impulsive behaviour. METHODS Ebselen was tested in two models of impulsivity with human analogues: the five-choice serial reaction time task (5-CSRTT) and rodent gambling task (rGT). The main outcome measures were premature responses (5-CSRTT and rGT) and choice behaviour (rGT), which model motor impulsivity and choice impulsivity, respectively. RESULTS At doses that decreased 5-HT2A receptor function (DOI-induced wet dog shakes), ebselen decreased premature responding in the 5-CSRTT both in the absence and presence of cocaine. The 5-HT2A receptor antagonist MDL 100,907 also reduced premature responding in the 5-CSRTT although not in the presence of cocaine. In the rGT ebselen showed a tendency to reduce premature responding but had no effect on choice behaviour. CONCLUSIONS These findings suggest that ebselen preferentially reduces motor impulsivity over choice impulsivity, and that inhibition of 5-HT2A receptor function is a contributing mechanism. Collectively, these data support the repurposing of ebselen as an anti-impulsive treatment and fast-tracking to clinical trials in patient groups characterised by poor impulse control.
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Affiliation(s)
- Chris Barkus
- 1 Department of Pharmacology, University of Oxford, UK
- 2 Department of Psychology, University of British Columbia, Vancouver, Canada
| | | | - Wendy K Adams
- 2 Department of Psychology, University of British Columbia, Vancouver, Canada
| | | | | | | | | | | | - Trevor Sharp
- 1 Department of Pharmacology, University of Oxford, UK
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32
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Saiardi A, Mudge AW. Lithium and fluoxetine regulate the rate of phosphoinositide synthesis in neurons: a new view of their mechanisms of action in bipolar disorder. Transl Psychiatry 2018; 8:175. [PMID: 30171184 PMCID: PMC6119186 DOI: 10.1038/s41398-018-0235-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 07/31/2018] [Indexed: 12/22/2022] Open
Abstract
Lithium is widely used to treat bipolar disorder, but its primary mechanism of action is uncertain. One proposal has been that lithium's ability to inhibit the enzyme inositol monophosphatase (IMPase) reduces the supply of recycled inositol used for membrane phosphoinositide (PIns) synthesis. This 28-year-old hypothesis is still widely debated, however, largely because total levels of PIns in brain or in cultured neurons do not decrease after lithium treatment. Here we use mature cultured cortical neurons to show that, although lithium has little effect on steady-state levels of either inositol or PIns, it markedly inhibits the rate of PIns synthesis. Moreover, we show that rapid synthesis of membrane PIns preferentially uses inositol newly imported from the extracellular space. Unexpectedly, we also find that the antidepressant drug fluoxetine (FLUO: Prozac) stimulates the rate of PIns synthesis. The convergence of both lithium and FLUO in regulating the rate of synthesis of PIns in opposite ways highlights PIns turnover in neurons as a potential new drug target, as well as for understanding mood control in BD. Our results also indicate new avenues for investigation of how neurons regulate their supply of inositol.
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Affiliation(s)
- Adolfo Saiardi
- Medical Research Council Laboratory for Molecular Cell Biology, University College London, Gower Street, London, WC1E 6BT, UK.
| | - Anne W. Mudge
- 0000000121901201grid.83440.3bMedical Research Council Laboratory for Molecular Cell Biology, University College London, Gower Street, London, WC1E 6BT UK
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33
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Ryskalin L, Limanaqi F, Frati A, Busceti CL, Fornai F. mTOR-Related Brain Dysfunctions in Neuropsychiatric Disorders. Int J Mol Sci 2018; 19:ijms19082226. [PMID: 30061532 PMCID: PMC6121884 DOI: 10.3390/ijms19082226] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 07/26/2018] [Accepted: 07/27/2018] [Indexed: 12/12/2022] Open
Abstract
The mammalian target of rapamycin (mTOR) is an ubiquitously expressed serine-threonine kinase, which senses and integrates several intracellular and environmental cues to orchestrate major processes such as cell growth and metabolism. Altered mTOR signalling is associated with brain malformation and neurological disorders. Emerging evidence indicates that even subtle defects in the mTOR pathway may produce severe effects, which are evident as neurological and psychiatric disorders. On the other hand, administration of mTOR inhibitors may be beneficial for a variety of neuropsychiatric alterations encompassing neurodegeneration, brain tumors, brain ischemia, epilepsy, autism, mood disorders, drugs of abuse, and schizophrenia. mTOR has been widely implicated in synaptic plasticity and autophagy activation. This review addresses the role of mTOR-dependent autophagy dysfunction in a variety of neuropsychiatric disorders, to focus mainly on psychiatric syndromes including schizophrenia and drug addiction. For instance, amphetamines-induced addiction fairly overlaps with some neuropsychiatric disorders including neurodegeneration and schizophrenia. For this reason, in the present review, a special emphasis is placed on the role of mTOR on methamphetamine-induced brain alterations.
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Affiliation(s)
- Larisa Ryskalin
- Human Anatomy, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy.
| | - Fiona Limanaqi
- Human Anatomy, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy.
| | | | | | - Francesco Fornai
- Human Anatomy, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy.
- I.R.C.C.S. Neuromed, Via Atinense 18, 86077 Isernia, Italy.
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34
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Ruggiero RN, Rossignoli MT, Lopes-Aguiar C, Leite JP, Bueno-Junior LS, Romcy-Pereira RN. Lithium modulates the muscarinic facilitation of synaptic plasticity and theta-gamma coupling in the hippocampal-prefrontal pathway. Exp Neurol 2018; 304:90-101. [DOI: 10.1016/j.expneurol.2018.02.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 01/25/2018] [Accepted: 02/15/2018] [Indexed: 12/26/2022]
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35
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Mood-stabilizing effects of rapamycin and its analog temsirolimus: relevance to autophagy. Behav Pharmacol 2018; 29:379-384. [DOI: 10.1097/fbp.0000000000000334] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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36
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Metaxakis A, Ploumi C, Tavernarakis N. Autophagy in Age-Associated Neurodegeneration. Cells 2018; 7:cells7050037. [PMID: 29734735 PMCID: PMC5981261 DOI: 10.3390/cells7050037] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 04/23/2018] [Accepted: 05/03/2018] [Indexed: 12/12/2022] Open
Abstract
The elimination of abnormal and dysfunctional cellular constituents is an essential prerequisite for nerve cells to maintain their homeostasis and proper function. This is mainly achieved through autophagy, a process that eliminates abnormal and dysfunctional cellular components, including misfolded proteins and damaged organelles. Several studies suggest that age-related decline of autophagy impedes neuronal homeostasis and, subsequently, leads to the progression of neurodegenerative disorders due to the accumulation of toxic protein aggregates in neurons. Here, we discuss the involvement of autophagy perturbation in neurodegeneration and present evidence indicating that upregulation of autophagy holds potential for the development of therapeutic interventions towards confronting neurodegenerative diseases in humans.
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Affiliation(s)
- Athanasios Metaxakis
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, Heraklion 70013, Crete, Greece.
| | - Christina Ploumi
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, Heraklion 70013, Crete, Greece.
- Department of Basic Sciences, Faculty of Medicine, University of Crete, Heraklion 70013, Crete, Greece.
| | - Nektarios Tavernarakis
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, Heraklion 70013, Crete, Greece.
- Department of Basic Sciences, Faculty of Medicine, University of Crete, Heraklion 70013, Crete, Greece.
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The observed alteration in BCL2 expression following lithium treatment is influenced by the choice of normalization method. Sci Rep 2018; 8:6399. [PMID: 29686228 PMCID: PMC5913222 DOI: 10.1038/s41598-018-24546-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 03/26/2018] [Indexed: 01/07/2023] Open
Abstract
Upregulation of B-cell CLL/lymphoma (BCL)2 expression following lithium treatment is seemingly well established and has been related to the neuroprotective property of the drug. However, while demonstrated by some (but not all) studies based on low-throughput techniques (e.g. qPCR) this effect is not reflected in high-throughput studies, such as microarrays and RNAseq. This manuscript presents a systematic review of currently available reports of lithium's effect on BCL2 expression. To our surprise, we found that the majority of the literature does not support the effect of lithium on BCL2 transcript or protein levels. Moreover, among the positive reports, several used therapeutically irrelevant lithium doses while others lack statistical power. We also noticed that numerous low-throughput studies normalized the signal using genes/proteins affected by lithium, imposing possible bias. Using wet bench experiments and reanalysis of publicly available microarray data, here we show that the reference gene chosen for normalization critically impacts the outcome of qPCR analyses of lithium's effect on BCL2 expression. Our findings suggest that experimental results might be severely affected by the choice of normalizing genes, and emphasize the need to re-evaluate stability of these genes in the context of the specific experimental conditions.
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