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A Complex Genome-MicroRNA Interplay in Human Mitochondria
Small noncoding regulatory RNA exist in wide spectrum of organisms ranging from prokaryote bacteria to humans. In human, a systematic search for noncoding RNA is mainly limited to the nuclear and cytosolic compartments. To investigate whether endogenous small regulatory RNA are present in cell organ...
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Published in: | BioMed research international 2015-01, Vol.2015 (2015), p.1-13 |
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description | Small noncoding regulatory RNA exist in wide spectrum of organisms ranging from prokaryote bacteria to humans. In human, a systematic search for noncoding RNA is mainly limited to the nuclear and cytosolic compartments. To investigate whether endogenous small regulatory RNA are present in cell organelles, human mitochondrial genome was also explored for prediction of precursor microRNA (pre-miRNA) and mature miRNA (miRNA) sequences. Six novel miRNA were predicted from the organelle genome by bioinformatics analysis. The structures are conserved in other five mammals including chimp, orangutan, mouse, rat, and rhesus genome. Experimentally, six human miRNA are well accumulated or deposited in human mitochondria. Three of them are expressed less prominently in Northern analysis. To ascertain their presence in human skeletal muscles, total RNA was extracted from enriched mitochondria by an immunomagnetic method. The expression of six novel pre-miRNA and miRNA was confirmed by Northern blot analysis; however, low level of remaining miRNA was found by sensitive Northern analysis. Their presence is further confirmed by real time RT-PCR. The six miRNA find their multiple targets throughout the human genome in three different types of software. The luciferase assay was used to confirm that MT-RNR2 gene was the potential target of hsa-miR-mit3 and hsa-miR-mit4. |
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In human, a systematic search for noncoding RNA is mainly limited to the nuclear and cytosolic compartments. To investigate whether endogenous small regulatory RNA are present in cell organelles, human mitochondrial genome was also explored for prediction of precursor microRNA (pre-miRNA) and mature miRNA (miRNA) sequences. Six novel miRNA were predicted from the organelle genome by bioinformatics analysis. The structures are conserved in other five mammals including chimp, orangutan, mouse, rat, and rhesus genome. Experimentally, six human miRNA are well accumulated or deposited in human mitochondria. Three of them are expressed less prominently in Northern analysis. To ascertain their presence in human skeletal muscles, total RNA was extracted from enriched mitochondria by an immunomagnetic method. The expression of six novel pre-miRNA and miRNA was confirmed by Northern blot analysis; however, low level of remaining miRNA was found by sensitive Northern analysis. Their presence is further confirmed by real time RT-PCR. The six miRNA find their multiple targets throughout the human genome in three different types of software. The luciferase assay was used to confirm that MT-RNR2 gene was the potential target of hsa-miR-mit3 and hsa-miR-mit4.</description><identifier>ISSN: 2314-6133</identifier><identifier>EISSN: 2314-6141</identifier><identifier>DOI: 10.1155/2015/206382</identifier><identifier>PMID: 25695052</identifier><language>eng</language><publisher>Cairo, Egypt: Hindawi Publishing Corporation</publisher><subject>Animals ; Apoptosis ; Base Sequence ; Bioinformatics ; Cells, Cultured ; Computational Biology - methods ; Deoxyribonucleic acid ; Disease ; DNA ; Gene expression ; Genome, Mitochondrial - genetics ; Genomes ; Genomics ; Health aspects ; HEK293 Cells ; Humans ; Methods ; Mice ; MicroRNA ; MicroRNAs ; MicroRNAs - genetics ; Mitochondria ; Mitochondria - genetics ; Mitochondrial DNA ; Molecular Sequence Data ; Muscle, Skeletal - metabolism ; Mutation ; Plant mitochondria ; Polypeptides ; Pongo - genetics ; Proteins ; Rats ; RNA sequencing ; Software</subject><ispartof>BioMed research international, 2015-01, Vol.2015 (2015), p.1-13</ispartof><rights>Copyright © 2015 Santosh Shinde and Utpal Bhadra.</rights><rights>COPYRIGHT 2015 John Wiley & Sons, Inc.</rights><rights>Copyright © 2015 Santosh Shinde and Utpal Bhadra. Santosh Shinde et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.</rights><rights>Copyright © 2015 S. Shinde and U. Bhadra. 2015</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c528t-39d82caaf0c2ffd7ec2b2c1dd9e38ff0adfda8f97d8388ccfad9a547ad3f9c1d3</citedby><cites>FETCH-LOGICAL-c528t-39d82caaf0c2ffd7ec2b2c1dd9e38ff0adfda8f97d8388ccfad9a547ad3f9c1d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.proquest.com/docview/1652320802/fulltextPDF?pq-origsite=primo$$EPDF$$P50$$Gproquest$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.proquest.com/docview/1652320802?pq-origsite=primo$$EHTML$$P50$$Gproquest$$Hfree_for_read</linktohtml><link.rule.ids>230,314,780,784,885,25753,27924,27925,37012,37013,44590,75126</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25695052$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Anné, Jozef</contributor><creatorcontrib>Santosh P., Shinde</creatorcontrib><creatorcontrib>Bhadra, Utpal</creatorcontrib><title>A Complex Genome-MicroRNA Interplay in Human Mitochondria</title><title>BioMed research international</title><addtitle>Biomed Res Int</addtitle><description>Small noncoding regulatory RNA exist in wide spectrum of organisms ranging from prokaryote bacteria to humans. In human, a systematic search for noncoding RNA is mainly limited to the nuclear and cytosolic compartments. To investigate whether endogenous small regulatory RNA are present in cell organelles, human mitochondrial genome was also explored for prediction of precursor microRNA (pre-miRNA) and mature miRNA (miRNA) sequences. Six novel miRNA were predicted from the organelle genome by bioinformatics analysis. The structures are conserved in other five mammals including chimp, orangutan, mouse, rat, and rhesus genome. Experimentally, six human miRNA are well accumulated or deposited in human mitochondria. Three of them are expressed less prominently in Northern analysis. To ascertain their presence in human skeletal muscles, total RNA was extracted from enriched mitochondria by an immunomagnetic method. The expression of six novel pre-miRNA and miRNA was confirmed by Northern blot analysis; however, low level of remaining miRNA was found by sensitive Northern analysis. Their presence is further confirmed by real time RT-PCR. The six miRNA find their multiple targets throughout the human genome in three different types of software. 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subjects | Animals Apoptosis Base Sequence Bioinformatics Cells, Cultured Computational Biology - methods Deoxyribonucleic acid Disease DNA Gene expression Genome, Mitochondrial - genetics Genomes Genomics Health aspects HEK293 Cells Humans Methods Mice MicroRNA MicroRNAs MicroRNAs - genetics Mitochondria Mitochondria - genetics Mitochondrial DNA Molecular Sequence Data Muscle, Skeletal - metabolism Mutation Plant mitochondria Polypeptides Pongo - genetics Proteins Rats RNA sequencing Software |
title | A Complex Genome-MicroRNA Interplay in Human Mitochondria |
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