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Medvedeva AV, Rebrova AV, Zalomaeva ES, Turaeva SK, Nikitina EA, Tokmacheva EV, Vasileva SA, Shchegolev BF, Savvateeva-Popova EV. Role of LIM Kinase 1 in Dopaminergic and Serotonergic Neurons in Genome Stability, Learning and Memory during Stress Response to Weakening of Earth’s Magnetic Field in Drosophila. J EVOL BIOCHEM PHYS+ 2022. [DOI: 10.1134/s0022093022010033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Medvedeva AV, Tokmatcheva EV, Kaminskaya AN, Vasileva SA, Nikitina EA, Zhuravlev SA, Zakharov GA, Zatsepina OG, Savvateeva-Popova EV. Parent-of-origin effects on nuclear chromatin organization and behavior in a Drosophila model for Williams-Beuren Syndrome. Vavilovskii Zhurnal Genet Selektsii 2021; 25:472-485. [PMID: 34595370 PMCID: PMC8460428 DOI: 10.18699/vj21.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/31/2021] [Accepted: 04/02/2021] [Indexed: 11/19/2022] Open
Abstract
Prognosis of neuropsychiatric disorders in progeny requires consideration of individual (1) parent-of-origin effects (POEs) relying on (2) the nerve cell nuclear 3D chromatin architecture and (3) impact of parent-specific miRNAs. Additionally, the shaping of cognitive phenotypes in parents depends on both learning acquisition and forgetting, or memory erasure. These processes are independent and controlled by different signal cascades: the first is cAMPdependent, the second relies on actin remodeling by small GTPase Rac1 - LIMK1 (LIM-kinase 1). Simple experimental model systems such as Drosophila help probe the causes and consequences leading to human neurocognitive pathologies. Recently, we have developed a Drosophila model for Williams-Beuren Syndrome (WBS): a mutant agnts3 of the agnostic locus (X:11AB) harboring the dlimk1 gene. The agnts3 mutation drastically increases the frequency of ectopic contacts (FEC) in specific regions of intercalary heterochromatin, suppresses learning/memory and affects locomotion. As is shown in this study, the polytene X chromosome bands in reciprocal hybrids between agnts3 and the wild type strain Berlin are heterogeneous in modes of FEC regulation depending either on maternal or paternal gene origin. Bioinformatic analysis reveals that FEC between X:11AB and the other X chromosome bands correlates with the occurrence of short (~30 bp) identical DNA fragments partly homologous to Drosophila 372-bp satellite DNA repeat. Although learning acquisition in a conditioned courtship suppression paradigm is similar in hybrids, the middle-term memory formation shows patroclinic inheritance. Seemingly, this depends on changes in miR-974 expression. Several parameters of locomotion demonstrate heterosis. Our data indicate that the agnts3 locus is capable of trans-regulating gene activity via POEs on the chromatin nuclear organization, thereby affecting behavior.
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Affiliation(s)
- A V Medvedeva
- Pavlov Institute of Physiology of the Russian Academy of Sciences, St. Petersburg, Russia
| | - E V Tokmatcheva
- Pavlov Institute of Physiology of the Russian Academy of Sciences, St. Petersburg, Russia
| | - A N Kaminskaya
- Pavlov Institute of Physiology of the Russian Academy of Sciences, St. Petersburg, Russia Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia
| | - S A Vasileva
- Pavlov Institute of Physiology of the Russian Academy of Sciences, St. Petersburg, Russia
| | - E A Nikitina
- Pavlov Institute of Physiology of the Russian Academy of Sciences, St. Petersburg, Russia Herzen State Pedagogical University of Russia, St. Petersburg, Russia
| | - S A Zhuravlev
- Pavlov Institute of Physiology of the Russian Academy of Sciences, St. Petersburg, Russia
| | - G A Zakharov
- Pavlov Institute of Physiology of the Russian Academy of Sciences, St. Petersburg, Russia
| | - O G Zatsepina
- Engelhardt Institute of Molecular Biology of the Russian Academy of Sciences, Moscow, Russia
| | - E V Savvateeva-Popova
- Pavlov Institute of Physiology of the Russian Academy of Sciences, St. Petersburg, Russia
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Kovrov GV, Medvedeva AV, Aronson AV, Berleva YV, Esyunina IS, Kulikova VS, Marshanskaya MA. Daytime sleepiness and cognitive disorders in elderly patients. Zh Nevrol Psikhiatr Im S S Korsakova 2020; 120:96-102. [DOI: 10.17116/jnevro202012001196] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Palatova TV, Maslyakova GN, Bucharskaya AB, Medvedeva AV, Voronina ES. [Morphological characteristics of fetal testes in chronic intrauterine hypoxia in different gestation periods]. Arkh Patol 2019; 80:21-26. [PMID: 30059068 DOI: 10.17116/patol201880421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To study the morphological characteristics and expression of vascular endothelial growth factor (VEGF) in the fetal testes exposed to chronic intrauterine hypoxia during pathological pregnancy in different gestation periods. MATERIAL AND METHODS The testes from 48 male fetuses that had died in the antenatal or early neonatal period in mothers with pathological pregnancy were morphologically evaluated. RESULTS Chronic intrauterine hypoxia was shown to be a powerful damaging factor and leads to delayed gonadal development. Histological examination of testicular tissue showed a significant reduction in the number of tubular cells per vision field, a decrease in tubular diameter and area, with the simultaneously increased area of the stroma and a larger number of vessels. Immunohistochemical study revealed the pronounced cytoplasmic expression of VEGF in testicular tissue in different gestation periods in the spermatogenic epitheliocytes, vessels, Leydig interstitial cells, while the maximal expression of this receptor was observed at 19-25 weeks' gestation, the degree of expression decreased at 26-29 weeks' gestation. CONCLUSION Intrauterine hypoxia has a destabilizing effect on the processes of proliferation and differentiation of the spermatogenic epithelium, interstitial endocrinocytes, activates the processes of angiogenesis and the growth of connective tissue. All this can involve not only gonadal dysgenesis, but also future reproductive dysfunction. Hypoxia stimulates the expression of VEGF, whose receptors are present in almost all testicular cell populations. It can be assumed that VEGF can act as a paracrine regulator of Leydig cell activity, also as an inducer of angiogenesis, and thus play a certain role in the development of male fertility.
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Affiliation(s)
- T V Palatova
- V.I. Razumovsky Saratov State Medical University, Ministry of Health of Russia, Saratov, Russia
| | - G N Maslyakova
- V.I. Razumovsky Saratov State Medical University, Ministry of Health of Russia, Saratov, Russia
| | - A B Bucharskaya
- V.I. Razumovsky Saratov State Medical University, Ministry of Health of Russia, Saratov, Russia
| | - A V Medvedeva
- V.I. Razumovsky Saratov State Medical University, Ministry of Health of Russia, Saratov, Russia
| | - E S Voronina
- V.I. Razumovsky Saratov State Medical University, Ministry of Health of Russia, Saratov, Russia
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Medvedeva AV, Golovatyuk AO, Poluektov MG. Autoimmune mechanisms and new opportunities for treatment narcolepsy. Zh Nevrol Psikhiatr Im S S Korsakova 2019; 119:56-62. [DOI: 10.17116/jnevro201911904256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Kaminskaya AN, Nikitina EA, Medvedeva AV, Gerasimenko MS, Chernikova DA, Savvateeva-Popova EV. The influence of the limk1 gene polymorphism on learning acquisition and memory formation, pCREB distribution and aggregate formation in neuromuscular junctions in Drosophila melanogaster. RUSS J GENET+ 2015. [DOI: 10.1134/s1022795415060071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Kaminskaya AN, Nikitina EA, Medvedeva AV, Gerasimenko MS, Chernikova DA, Savateeva-Popova EV. [Influence of limk1 Gene Polymorphism on Learning Acquisition and Memory Formation with pCREB Distribution and Aggregate Formation in Neuromuscular Junctions in Drosophila melanogaster]. Genetika 2015; 51:685-693. [PMID: 26310031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We have shown previously that the polymorphic structure of the limk1 gene in drosophila leads to changes in LIMK1 content and to defects in courtship behavior, sound production, and learning/memory. The results of the present study of three wild-type strains and mutant agn(ts3) with altered limk1 structure demonstrate that long-term memory is normal in Canton-S and Oregon-R but is impaired in Berlin and drastically suppressed in agn(ts3). This temperature-sensitive mutant carries the S-element from the Tc1/mariner family insertion near the dlimk1 3'-UTR and, compared to Canton-S, has a reverse pCREB distribution in adult neuromuscular junctions (NMJ) of the second dorsal imago nerve before and after learning. Moreover, only agn(ts3) demonstrates amyloid-like aggregate formation in NMJ. This suggests that this impedes pCREb transport and thereby impairs the formation of short- and long-term memory.
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Savvateeva-Popova EV, Nikitina EA, Medvedeva AV. [Neurogenetics and Neuroepigenetics]. Genetika 2015; 51:613-624. [PMID: 26137640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
"Genetics of behavior," or "Neurogenetics," is based on the evolutionary ideas of T. Dobzhansky on brain development and behavior. It continues with the "experimental genetics of higher nervous activity" of I. Pavlov and uses a comparative approach in the study of heredity and variation in behavioral manifestations, from Protozoa to humans. The study of the classical Pavlovian conditioned reflex in mutant Drosophila helped to identify the main types of memory and their evolutionary conservatism. Long-term memory defects are caused by mutations of the same genes as in mental, retardation in humans, when signaling cascades intersecting with the cAMP-dependent pathway are damaged. The cascade of actin remodeling is also among these. The key enzyme, LIM-kinase 1, controls cognitive manifestations of the "genomic disease" Williams deletion syndrome. Its study resulted in the recognition of neuroepigenetics as an interface between the genome and environmental influences. Epigenetic factors of "variability"--DNA methylation, histone acetylation, and microRNA regulation--do not change the structure of the gene but its manifestations. Certain miRNAs have already been considered to be both biomarkers for neurodegenerative diseases and factors of the intergenerational transmission of the behaviorial properties of ancestors who experienced stress from adverse environmental influences.
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Nikitina ЕА, Medvedeva AV, Zakharov GА, Savvateeva-Popova ЕV. The Drosophila agnostic Locus: Involvement in the Formation of Cognitive Defects in Williams Syndrome. Acta Naturae 2014. [DOI: 10.32607/20758251-2014-6-2-53-61] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The molecular basis of the pathological processes that lead to genome disorders is similar both in invertebrates and mammals. Since cognitive impairments in Williams syndrome are caused by LIMK1 hemizygosity, could the spontaneous and mutant variants of the Drosophila limk1 gene serve as a model for studying two diagnostic features from three distinct cognitive defects of the syndrome? These two symptoms are the disturbance of visuospatial orientation and an unusualy strong fixation on the faces of other people during pairwise interaction with a stranger. An experimental approach to the first cognitive manifestation might be an analysis of the locomotor behavior of Drosophila larvae involving visuospatial orientation during the exploration of the surrounding environment. An approach to tackle the second manifestation might be an analysis of the most natural ways of contact between a male and a female during courtship (the first stage of this ritual is the orientation of a male towards a female and following the female with constant fixation on the females image). The present study of locomotor activity and cognitive repertoire in spontaneous and mutant variants of the Drosophila agnostic locus allows one to bridge alterations in the structure of the limk1 gene and behavior.
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Nikitina EA, Medvedeva AV, Zakharov GA, Savvateeva-Popova EV. The Drosophila agnostic Locus: Involvement in the Formation of Cognitive Defects in Williams Syndrome. Acta Naturae 2014; 6:53-61. [PMID: 25093112 PMCID: PMC4115227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The molecular basis of the pathological processes that lead to genome disorders is similar both in invertebrates and mammals. Since cognitive impairments in Williams syndrome are caused by LIMK1 hemizygosity, could the spontaneous and mutant variants of the Drosophila limk1 gene serve as a model for studying two diagnostic features from three distinct cognitive defects of the syndrome? These two symptoms are the disturbance of visuospatial orientation and an unusualy strong fixation on the faces of other people during pairwise interaction with a stranger. An experimental approach to the first cognitive manifestation might be an analysis of the locomotor behavior of Drosophila larvae involving visuospatial orientation during the exploration of the surrounding environment. An approach to tackle the second manifestation might be an analysis of the most natural ways of contact between a male and a female during courtship (the first stage of this ritual is the orientation of a male towards a female and following the female with constant fixation on the female's image). The present study of locomotor activity and cognitive repertoire in spontaneous and mutant variants of the Drosophila agnostic locus allows one to bridge alterations in the structure of the limk1 gene and behavior.
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Affiliation(s)
- E. A. Nikitina
- Pavlov Institute of Physiology RAS, nab. Makarova, 6, 199034, St. Petersburg, Russia
- Herzen State Pedagogical University, nab. r. Moyki, 48, 191186, St. Petersburg, Russia
| | - A. V. Medvedeva
- Pavlov Institute of Physiology RAS, nab. Makarova, 6, 199034, St. Petersburg, Russia
- Saint-Petersburg State University, Universitetskaya nab., 7-9, 199034, St. Petersburg, Russia
| | - G. A. Zakharov
- Pavlov Institute of Physiology RAS, nab. Makarova, 6, 199034, St. Petersburg, Russia
- Saint-Petersburg State University, Universitetskaya nab., 7-9, 199034, St. Petersburg, Russia
| | - E. V. Savvateeva-Popova
- Pavlov Institute of Physiology RAS, nab. Makarova, 6, 199034, St. Petersburg, Russia
- Saint-Petersburg State University, Universitetskaya nab., 7-9, 199034, St. Petersburg, Russia
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Nikitina ЕА, Medvedeva AV, Zakharov GА, Savvateeva-Popova ЕV. Williams Syndrome As a Model for Elucidation of the Pathway Genes - the Brain - Cognitive Functions: Genetics and Epigenetics. Acta Naturae 2014. [DOI: 10.32607/20758251-2014-6-1-9-22] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Genomic diseases or syndromes with multiple manifestations arise spontaneously and unpredictably as a result of contiguous deletions and duplications generated by unequal recombination in chromosomal regions with a specific architecture. The Williams syndrome is believed to be one of the most attractive models for linking genes, the brain, behavior and cognitive functions. It is a neurogenetic disorder resulting from a 1.5 Mb deletion at 7q11.23 which covers more than 20 genes; the hemizigosity of these genes leads to multiple manifestations, with the behavioral ones comprising three distinct domains: 1) visuo-spatial orientation; 2) verbal and linguistic defect; and 3) hypersocialisation. The shortest observed deletion leads to hemizigosity in only two genes: eln and limk1. Therefore, the first gene is supposed to be responsible for cardiovascular pathology; and the second one, for cognitive pathology. Since cognitive pathology diminishes with a patients age, the original idea of the crucial role of genes straightforwardly determining the brains morphology and behavior was substituted by ideas of the brains plasticity and the necessity of finding epigenetic factors that affect brain development and the functions manifested as behavioral changes. Recently, non-coding microRNAs (miRs) began to be considered as the main players in these epigenetic events. This review tackles the following problems: is it possible to develop relatively simple model systems to analyze the contribution of both a single gene and the consequences of its epigenetic regulation in the formation of the Williams syndromes cognitive phenotype? Is it possible to use Drosophila as a simple model system?
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Nikitina EA, Medvedeva AV, Zakharov GA, Savvateeva-Popova EV. Williams syndrome as a model for elucidation of the pathway genes - the brain - cognitive functions: genetics and epigenetics. Acta Naturae 2014; 6:9-22. [PMID: 24772323 PMCID: PMC3999462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Genomic diseases or syndromes with multiple manifestations arise spontaneously and unpredictably as a result of contiguous deletions and duplications generated by unequal recombination in chromosomal regions with a specific architecture. The Williams syndrome is believed to be one of the most attractive models for linking genes, the brain, behavior and cognitive functions. It is a neurogenetic disorder resulting from a 1.5 Mb deletion at 7q11.23 which covers more than 20 genes; the hemizigosity of these genes leads to multiple manifestations, with the behavioral ones comprising three distinct domains: 1) visuo-spatial orientation; 2) verbal and linguistic defect; and 3) hypersocialisation. The shortest observed deletion leads to hemizigosity in only two genes: eln and limk1. Therefore, the first gene is supposed to be responsible for cardiovascular pathology; and the second one, for cognitive pathology. Since cognitive pathology diminishes with a patient's age, the original idea of the crucial role of genes straightforwardly determining the brain's morphology and behavior was substituted by ideas of the brain's plasticity and the necessity of finding epigenetic factors that affect brain development and the functions manifested as behavioral changes. Recently, non-coding microRNAs (miRs) began to be considered as the main players in these epigenetic events. This review tackles the following problems: is it possible to develop relatively simple model systems to analyze the contribution of both a single gene and the consequences of its epigenetic regulation in the formation of the Williams syndrome's cognitive phenotype? Is it possible to use Drosophila as a simple model system?
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Affiliation(s)
- E. A. Nikitina
- Pavlov Institute of Physiology, Russian Academy of Sciences, nab. Makarova, 6, 199034, St. Petersburg, Russia
- Herzen State Pedagogical University, nab. r. Moyki, 48, 191186, St. Petersburg, Russia
| | - A. V. Medvedeva
- Pavlov Institute of Physiology, Russian Academy of Sciences, nab. Makarova, 6, 199034, St. Petersburg, Russia
- Saint Petersburg State University, Universitetskaya nab., 8-9, 199034, St. Petersburg, Russia
| | - G. A. Zakharov
- Pavlov Institute of Physiology, Russian Academy of Sciences, nab. Makarova, 6, 199034, St. Petersburg, Russia
- Saint Petersburg State University, Universitetskaya nab., 8-9, 199034, St. Petersburg, Russia
| | - E. V. Savvateeva-Popova
- Pavlov Institute of Physiology, Russian Academy of Sciences, nab. Makarova, 6, 199034, St. Petersburg, Russia
- Saint Petersburg State University, Universitetskaya nab., 8-9, 199034, St. Petersburg, Russia
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Nikitina EA, Medvedeva AV, Dolgaya YF, Korochkin LI, Pavlova GV, Savvateeva-Popova EV. Involvement of GDNF and LIMK1 and heat shock proteins in drosophila learning and memory formation. J EVOL BIOCHEM PHYS+ 2013. [DOI: 10.1134/s0022093012050076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Nikitina EA, Medvedeva AV, Dolgaia IF, Korochkin LI, Pavlova GV, Savvateeva-Popova EV. [Participation of GDNF, LIMK1 signal pathways and heat shock proteins in processes of Drosophila learning and memory formation]. Zh Evol Biokhim Fiziol 2012; 48:588-596. [PMID: 23401971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Molecular mechanisms of the synapse and dendrite maintenance and their disturbance in psychiatric and neurodegenerative diseases (ND) are intensively studied in searching for target genes of therapeutic actions. It is suggested that glia, alongside with well-studied pre- and postsynaptic neurons, is the third, poorly studied partner in synaptic transmission (the tripartite synapse) that is involved in the positive feedback between the first two partners. This bidirectional coupling between presynaptic neurons and their postsynaptic targets involve neurotrophins (NTF), such as glial cell-derived neurotrophic factor (GDNF) that is produced LIM kinase 1 (LIMK1, the key enzyme of actin remodeling). The cytoplasmic domain of neuregulins interacts with LIMK1. Since neurons and axons that do not receive a sufficient NTF amount are at risk of degeneration and synapse elimination, GDNF seems to be the best studied factor of the ND therapy. The delivery of GDNF stem cells to the neurodegeneration locus is very efficient. There has been proposed a new approach based on use of Drosophila heat shock (hs) promoter. This promoter responds to the mammalian body temperature as to the shock factor resulting in the constant expression of the GDNF gene. The Drosophila models allow studying any given component of the bidirectional communication between pre- and postsynaptic neurons in development of the main diagnostic ND symptom, such as defective memory resulted from synaptic atrophy. In the present study we used the Drosophila stocks imitating different disturbances of the nervous system: Canton-S (wild type), GDNF (transgenic flies that carry human glial-cell-line derived nerve factor (GDNF) gene under hs promoter), l(1)ts403 with dusturbance of HSPs mRNA extranuclear transport, a defect of intracellular stress report, and agn(ts3) mutation in LIMK1 gene. We have revealed functional connections at the behavioral level (learning/memory) depending on the GDNF and LIMK1 brain expression and HSPs transduction that might provide targets for complex approaches for the ND treatment.
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Medvedeva AV, Molotkov DA, Nikitina EA, Popov AV, Karagodin DA, Baricheva EM, Savvateeva-Popova EV. Systemic regulation of genetic and cytogenetic processes by a signal cascade of actin remodeling: Locus agnostic in Drosophila. RUSS J GENET+ 2008. [DOI: 10.1134/s1022795408060069] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Medvedeva AV, Molotkov DA, Nikitina EA, Popov AV, Karagodin DA, Baricheva EM, Savvateeva-Popova EV. [Systemic regulation of genetic and cytogenetic processes by a signal cascade of actin remodeling: locus agnostic in Drosophila]. Genetika 2008; 44:771-783. [PMID: 18727387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The concept on systemic regulation of genetic and cytogenetic processes has acquired a new perspective after the completion of the Human Genome project, when the view on systemic realization of genetic activity in the dynamic spatial organization of the genome is the nucleus was generally accepted. This organization underlies plasticity of complex biological systems. Chromosome position within the nucleus determined both processes of normal development and the development of genomic diseases, i.e., changes according to the environmental requirements, current needs of the organism, and its individual experience. Nuclear actin has been envisioned as a main factor bridging three levels of the genome organization (nucleotide, structural, and spatial), due to its capability of (1) regulating transcription by activating all three classes of RNA polymerase; (2) participating in chromatin remodeling by interacting with numerous proteins; and (3) lining the nuclear membrane, determining the chromosome attachment points and regulating export from the nucleus. In view of this, the role of actin remodeling factors (LIMK1, cofilin, actin) in the development of neurodegenerative diseases, including prionic ones, and in the mechanisms of generation of genomic diseases, syndromes resulting from unequal recombination, has been intensely studied. Drosophila is a helpful model organism to determine the sequence of events in this system of hierarchical relationships. Using spontaneous and mutant variants of the agnostic locus, we have designed a model of the Williams syndrome, which also reproduces main diagnostic traits of neurodegenerative diseases.
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Medvedeva AV, Damulin IV. [Clinical and pathogenetic aspects of pseudobulbar syndrome]. Zh Nevrol Psikhiatr Im S S Korsakova 2008; 108:60-65. [PMID: 18646383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
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Savvateeva-Popova EV, Peresleni AI, Scharagina LM, Medvedeva AV, Korochkina SE, Grigorieva IV, Dyuzhikova NA, Popov AV, Baricheva EM, Karagodin D, Heisenberg M. Architecture of the X Chromosome, Expression of LIM Kinase 1, and Recombination in the agnostic Mutants of Drosophila: A Model for Human Williams Syndrome. RUSS J GENET+ 2004. [DOI: 10.1023/b:ruge.0000033308.97306.9a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Savvateeva-Popova EV, Peresleni AI, Sharagina LM, Medvedeva AV, Korochkina SE, Grigor'eva IV, Diuzhikova NA, Popov AV, Baricheva EM, Karagodin D, Heisenberg M. [Architecture of the X chromosome, expression of LIM kinase 1, and recombination in the agnostic mutants of Drosophila: a model of human Williams syndrome]. Genetika 2004; 40:749-769. [PMID: 15341266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
As the Human Genome and Drosophila Genome Projects were completed, it became clear that functions of human disease-associated genes may be elucidated by studying the phenotypic expression of mutations affecting their structural or functional homologs in Drosophila. Genomic diseases were identified as a new class of human disorders. Their cause is recombination, which takes place at gene-flanking duplicons to generate chromosome aberrations such as deletions, duplications, inversions, and translocations. The resulting imbalance of the dosage of developmentally important genes arises at a frequency of 10(-3) (higher than the mutation rate of individual genes) and leads to syndromes with multiple manifestations, including cognitive defects. Genomic DNA fragments were cloned from the Drosophila melanogaster agnostic locus, whose mutations impair learning ability and memory. As a result, the locus was exactly localized in X-chromosome region 11A containing the LIM kinase 1 (LIMK1) gene (CG1848), which is conserved among many species. Hemizygosity for the LIMK1 gene, which is caused by recombination at neighboring extended repeats, underlies cognitive disorders in human Williams syndrome. LIMK1 is a component of the integrin signaling cascade, which regulates the functions of the actin cytoskeleton, synaptogenesis, and morphogenesis in the developing brain. Immunofluorescence analysis revealed LIMK1 in all subdomains of the central complex and the visual system of Drosophila melanogaster. Like in the human genome, the D. melanogaster region is flanked by numerous repeats, which were detected by molecular genetic methods and analysis of ectopic chromosome pairing. The repeats determined a higher rate of spontaneous and induced recombination. including unequal crossing over, in the agnostic gene region. Hence, the agnostic locus was considered as the first D. melanogaster model suitable for studying the genetic defect associated with Williams syndrome in human.
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Savvateeva-Popova EV, Peresleni AI, Sharagina LM, Tokmacheva EV, Medvedeva AV, Kamyshev NG, Popov AV, Ozerskiĭ PV, Baricheva EM, Karagodin D, Heisenberg M. [The complex study of the Drosophila melanogaster mutants in agnostic locus: the model for the disruption of the genome architecture and cognitive functions]. Zh Evol Biokhim Fiziol 2002; 38:557-77. [PMID: 12625060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
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Savvateeva-popova EV, Peresleny AI, Scharagina LM, Tokmacheva EV, Medvedeva AV, Kamyshev NG, Popov AV, Ozersky PV, Baricheva EM, Karagodin D, Heisenberg M. J EVOL BIOCHEM PHYS+ 2002; 38:706-733. [DOI: 10.1023/a:1023003625014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Medvedeva AV, Tokmacheva EV, Savvateeva EV, Kornitskii VS. Organization of the Drosophila genome in mutants with changes in second messenger metabolism and learning ability. Neurosci Behav Physiol 1997; 27:272-4. [PMID: 9194065 DOI: 10.1007/bf02462893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Mechanisms modifying the structural-functional organization of polytene chromosomes were studied in a Drosophila line in which the activating properties of calmodulin were altered and learning ability was increased, by treating mutants with homeopathic preparations which affect Ca2+ and F- ion metabolism. The results indicated a dominant role for Ca2+ ions and calmodulin in determining the chromocentric organization of the nucleus. F- ions, which stimulate the adenylate cyclase complex, were found not to have a role.
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Affiliation(s)
- A V Medvedeva
- Laboratory of Comparative Behavioral Genetics, I. P. Pavlov Institute of Physiology, Russian Academy of Sciences, St. Petersburg
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Medvedeva AV, Tokmacheva EV, Savvateeva EV, Kornitskiĭ VS. [The organizational characteristics of the Drosophila genome in mutants with altered second-messenger metabolism and with learning ability]. Fiziol Zh Im I M Sechenova 1995; 81:90-3. [PMID: 8775440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The data obtained on homeopathic correction of the Drosophila mutant strains with altered activation properties of calmodulin and increased ability for learning, suggest an important role of Ca ions calmodulin in formation of chromocentral organisation of the nucleus. No significant role of the F ions was revealed.
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Affiliation(s)
- A V Medvedeva
- Pavlov Institute of Physiology of the Russian Acad. Sci., St. Petersburg
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Kamyshev NG, Smirnova GP, Savvateeva EV, Medvedeva AV, Ponomarenko VV. The influence of serotonin and p-chlorophenylalanine on locomotor activity of Drosophila melanogaster. Pharmacol Biochem Behav 1983; 18:677-81. [PMID: 6222385 DOI: 10.1016/0091-3057(83)90005-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Two hours after injection of serotonin into 3-day-old virgin females of Drosophila melanogaster, a significant dose-dependent increase in locomotor activity was observed. Since this stimulating effect can be produced either by serotonin or by some of its derivatives that might have formed during these two hours, the fate of injected [3H]-serotonin in the organism of Drosophila was traced by means of thin layer chromatography. The only metabolite found appeared to be N-acetylserotonin. Its formation was rather intense immediately after injection of [3H]-serotonin, and its excretion was rapid enough to make it undetectable at the end of the second hour, when more than 50% of the injected [3H]-serotonin still remained and was being absorbed by tissues. Thus, the increase in locomotor activity observed two hours after injection should be wholly attributed to serotonin, while the rather long latency might be related to some effect of N-acetylserotonin. p-Chlorophenylalanine, an inhibitor of tryptophan-5-hydroxylase, both injected or administered with food, led to increases in locomotor activity level and to some decreases in serotonin content in the heads of flies. The effect of p-chlorophenylalanine on locomotor activity in Drosophila seems to be non-specific in relation to serotoninergic mechanisms of its regulation.
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