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Zhuravlev AV, Zakharov GA, Anufrieva EV, Medvedeva AV, Nikitina EA, Savvateeva-Popova EV. Chromatin Structure and "DNA Sequence View": The Role of Satellite DNA in Ectopic Pairing of the Drosophila X Polytene Chromosome. Int J Mol Sci 2021; 22:8713. [PMID: 34445413 PMCID: PMC8395981 DOI: 10.3390/ijms22168713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 08/11/2021] [Indexed: 11/16/2022] Open
Abstract
Chromatin 3D structure plays a crucial role in regulation of gene activity. Previous studies have envisioned spatial contact formations between chromatin domains with different epigenetic properties, protein compositions and transcription activity. This leaves specific DNA sequences that affect chromosome interactions. The Drosophila melanogaster polytene chromosomes are involved in non-allelic ectopic pairing. The mutant strain agnts3, a Drosophila model for Williams-Beuren syndrome, has an increased frequency of ectopic contacts (FEC) compared to the wild-type strain Canton-S (CS). Ectopic pairing can be mediated by some specific DNA sequences. In this study, using our Homology Segment Analysis software, we estimated the correlation between FEC and frequency of short matching DNA fragments (FMF) for all sections of the X chromosome of Drosophila CS and agnts3 strains. With fragment lengths of 50 nucleotides (nt), CS showed a specific FEC-FMF correlation for 20% of the sections involved in ectopic contacts. The correlation was unspecific in agnts3, which may indicate the alternative epigenetic mechanisms affecting FEC in the mutant strain. Most of the fragments that specifically contributed to FMF were related to 1.688 or 372-bp middle repeats. Thus, middle repetitive DNA may serve as an organizer of ectopic pairing.
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Affiliation(s)
- Aleksandr V. Zhuravlev
- Pavlov Institute of Physiology, Russian Academy of Sciences, 199034 Saint Petersburg, Russia; (G.A.Z.); (A.V.M.); (E.A.N.); (E.V.S.-P.)
| | - Gennadii A. Zakharov
- Pavlov Institute of Physiology, Russian Academy of Sciences, 199034 Saint Petersburg, Russia; (G.A.Z.); (A.V.M.); (E.A.N.); (E.V.S.-P.)
- EPAM Systems Inc., Saint Petersburg 197110, Russia
| | - Ekaterina V. Anufrieva
- Faculty of Biology, Herzen State Pedagogical University of Russia, 191186 Saint Petersburg, Russia;
| | - Anna V. Medvedeva
- Pavlov Institute of Physiology, Russian Academy of Sciences, 199034 Saint Petersburg, Russia; (G.A.Z.); (A.V.M.); (E.A.N.); (E.V.S.-P.)
| | - Ekaterina A. Nikitina
- Pavlov Institute of Physiology, Russian Academy of Sciences, 199034 Saint Petersburg, Russia; (G.A.Z.); (A.V.M.); (E.A.N.); (E.V.S.-P.)
- Faculty of Biology, Herzen State Pedagogical University of Russia, 191186 Saint Petersburg, Russia;
| | - Elena V. Savvateeva-Popova
- Pavlov Institute of Physiology, Russian Academy of Sciences, 199034 Saint Petersburg, Russia; (G.A.Z.); (A.V.M.); (E.A.N.); (E.V.S.-P.)
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Savvateeva-Popova EV, Zhuravlev AV, Brázda V, Zakharov GA, Kaminskaya AN, Medvedeva AV, Nikitina EA, Tokmatcheva EV, Dolgaya JF, Kulikova DA, Zatsepina OG, Funikov SY, Ryazansky SS, Evgen‘ev MB. Drosophila Model for the Analysis of Genesis of LIM-kinase 1-Dependent Williams-Beuren Syndrome Cognitive Phenotypes: INDELs, Transposable Elements of the Tc1/ Mariner Superfamily and MicroRNAs. Front Genet 2017; 8:123. [PMID: 28979292 PMCID: PMC5611441 DOI: 10.3389/fgene.2017.00123] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 09/04/2017] [Indexed: 12/18/2022] Open
Abstract
Genomic disorders, the syndromes with multiple manifestations, may occur sporadically due to unequal recombination in chromosomal regions with specific architecture. Therefore, each patient may carry an individual structural variant of DNA sequence (SV) with small insertions and deletions (INDELs) sometimes less than 10 bp. The transposable elements of the Tc1/mariner superfamily are often associated with hotspots for homologous recombination involved in human genetic disorders, such as Williams Beuren Syndromes (WBS) with LIM-kinase 1-dependent cognitive defects. The Drosophila melanogaster mutant agnts3 has unusual architecture of the agnostic locus harboring LIMK1: it is a hotspot of chromosome breaks, ectopic contacts, underreplication, and recombination. Here, we present the analysis of LIMK1-containing locus sequencing data in agnts3 and three D. melanogaster wild-type strains-Canton-S, Berlin, and Oregon-R. We found multiple strain-specific SVs, namely, single base changes and small INDEls. The specific feature of agnts3 is 28 bp A/T-rich insertion in intron 1 of LIMK1 and the insertion of mobile S-element from Tc1/mariner superfamily residing ~460 bp downstream LIMK1 3'UTR. Neither of SVs leads to amino acid substitutions in agnts3 LIMK1. However, they apparently affect the nucleosome distribution, non-canonical DNA structure formation and transcriptional factors binding. Interestingly, the overall expression of miRNAs including the biomarkers for human neurological diseases, is drastically reduced in agnts3 relative to the wild-type strains. Thus, LIMK1 DNA structure per se, as well as the pronounced changes in total miRNAs profile, probably lead to LIMK1 dysregulation and complex behavioral dysfunctions observed in agnts3 making this mutant a simple plausible Drosophila model for WBS.
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Affiliation(s)
- Elena V. Savvateeva-Popova
- Department of Neurogenetics, Pavlov Institute of Physiology, Russian Academy of SciencesSt. Petersburg, Russia
| | - Aleksandr V. Zhuravlev
- Department of Neurogenetics, Pavlov Institute of Physiology, Russian Academy of SciencesSt. Petersburg, Russia
| | - Václav Brázda
- Department of Biophysical Chemistry and Molecular Oncology, Institute of Biophysics, Academy of Sciences of the Czech RepublicBrno, Czechia
| | - Gennady A. Zakharov
- Department of Neurogenetics, Pavlov Institute of Physiology, Russian Academy of SciencesSt. Petersburg, Russia
| | - Alena N. Kaminskaya
- Department of Neurogenetics, Pavlov Institute of Physiology, Russian Academy of SciencesSt. Petersburg, Russia
| | - Anna V. Medvedeva
- Department of Neurogenetics, Pavlov Institute of Physiology, Russian Academy of SciencesSt. Petersburg, Russia
| | - Ekaterina A. Nikitina
- Department of Neurogenetics, Pavlov Institute of Physiology, Russian Academy of SciencesSt. Petersburg, Russia
- Department of Human and Animal Anatomy and Physiology, Herzen State Pedagogical UniversitySt. Petersburg, Russia
| | - Elena V. Tokmatcheva
- Department of Neurogenetics, Pavlov Institute of Physiology, Russian Academy of SciencesSt. Petersburg, Russia
| | - Julia F. Dolgaya
- Department of Neurogenetics, Pavlov Institute of Physiology, Russian Academy of SciencesSt. Petersburg, Russia
| | - Dina A. Kulikova
- Department of Molecular Mechanisms of Development, Koltzov Institute of Developmental Biology, Russian Academy of SciencesMoscow, Russia
| | - Olga G. Zatsepina
- Department of Molecular Mechanisms of Biological Adaptation, Engelhardt Institute of Molecular Biology, Russian Academy of SciencesMoscow, Russia
| | - Sergei Y. Funikov
- Department of Molecular Mechanisms of Biological Adaptation, Engelhardt Institute of Molecular Biology, Russian Academy of SciencesMoscow, Russia
| | - Sergei S. Ryazansky
- Department of Biochemical Genetics of Animals, Institute of Molecular Genetics, Russian Academy of SciencesMoscow, Russia
| | - Michail B. Evgen‘ev
- Department of Molecular Mechanisms of Biological Adaptation, Engelhardt Institute of Molecular Biology, Russian Academy of SciencesMoscow, Russia
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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