Name: real-time tracking of dna fragment separation by smartphone
Uploaded: 2017-06-01T15:00:00
Description: Watch this Scientific Journal Video about Real-time Tracking of DNA Fragment Separation by Smartphone at JoVE.com

Vi anerkender taknemmeligt støtte fra National Natural Science Foundation of China (nr. 21205078) og forskningsfonden for Ph.d.-uddannelsen i Kina (No.20123120110002). Dette arbejde blev delvist støttet af Kinas nationale nøgleforsknings- og udviklingsprogram (2016YFB1102303), Kinas nationale grundforskningsprogram (973Program; 2015CB352001) og National Natural Science Foundation of China (61378060).

1. Grundlæggende design af SGE Chip <ol><li> Brug enhver gennemsigtig plastik, såsom polymethylmethacrylat (PMMA) eller polycarbonat. Bemærk: SGE-chip&#39;en er vist i figur 1B . SGE-chip består af cylindriske huller til TBE-bufferen, kanaler til DNA-adskillelse, og to baner indlejret langs hullerne for elektroden. </li><li> Fremstil arrays af SGE-kanaler i PMMA-blokken ved hjælp af en lasergraveringsmaskin. Bemærk: Chipens geometriske parametre afhænger af størrelse...

<ol>
	<li>Carle, G. F., Olson, M. V. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Separation+of+chromosomal+DNA+molecules+from+yeast+by+orthogonal-field-alternation+gel+electrophoresis.">Separation of chromosomal DNA molecules from yeast by orthogonal-field-alternation gel electrophoresis.</a> Nucleic. Acids. Res. 12 (14), 5647-5664 (1984).</li><li>McDonell, M. W., Simon, M. N., Studier, F. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Analysis+of+restriction+fragments+of+T7+DNA+and+determination+of+molecular+weights+by+electrophoresis+in+neutral+and+alkaline+gels.">Analysis of restriction fragments of T7 DNA and determination of molecular weights by electrophoresis in neutral and alkaline gels.</a> J. Mol. Biol. 110 (1), 119-146 (1977).</li><li>Fangman, W. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Separation+of+very+large+DNA+molecules+by+gel+electrophoresis.">Separation of very large DNA molecules by gel electrophoresis.</a> Nucleic. Acids. Res. 5 (3), 653-665 (1978).</li><li>Blum, H., Beier, H., Gross, H. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Improved+silver+staining+of+plant+proteins,+RNA+and+DNA+in+polyacrylamide+gels.">Improved silver staining of plant proteins, RNA and DNA in polyacrylamide gels.</a> Electrophoresis. 8 (2), 93-99 (1987).</li><li>G&#246;dde, R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Electrophoresis+of+DNA+in+human+genetic+diagnostics-state-of-the-art,+alternatives+and+future+prospects.">Electrophoresis of DNA in human genetic diagnostics-state-of-the-art, alternatives and future prospects.</a> Electrophoresis. 27 (5-6), 939-946 (2006).</li><li>Studier, F. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Analysis+of+bacteriophage+T7+early+RNAs+and+proteins+on+slab+gels.">Analysis of bacteriophage T7 early RNAs and proteins on slab gels.</a> J. Mol. Biol. 79 (2), 237-248 (1973).</li><li>Sugden, B., De Troy, B., Roberts, R. J., Sambrook, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Agarose+slab-gel+electrophoresis+equipment.">Agarose slab-gel electrophoresis equipment.</a> Anal. Biochem. 68 (1), 36-46 (1975).</li><li>Rabilloud, T., Chevallet, M., Luche, S., Lelong, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Two-dimensional+gel+electrophoresis+in+proteomics:+Past,+present+and+future.">Two-dimensional gel electrophoresis in proteomics: Past, present and future.</a> J. Proteomics. 73 (11), 2064-2077 (2010).</li><li>Lee, P. Y., Costumbrado, J., Hsu, C. Y., Kim, Y. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Agarose+gel+electrophoresis+for+the+separation+of+DNA+fragments.">Agarose gel electrophoresis for the separation of DNA fragments.</a> J. Vis. Exp. (62), e3923 (2012).</li><li>Gasser, R. B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Single-strand+conformation+polymorphism+(SSCP)+for+the+analysis+of+genetic+variation.">Single-strand conformation polymorphism (SSCP) for the analysis of genetic variation.</a> Nat. Protoc. 1 (6), 3121-3128 (2006).</li><li>Matselyukh, B. P., Yarmoluk, S. M., Matselyukh, A. B., Kovalska, V. B., Kocheshev, I. O., Kryvorotenko, D. V., Lukashov, S. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Interaction+of+cyanine+dyes+with+nucleic+acids:+XXXI.+Using+of+polymethine+cyanine+dyes+for+the+visualization+of+DNA+in+agarose+gels.">Interaction of cyanine dyes with nucleic acids: XXXI. Using of polymethine cyanine dyes for the visualization of DNA in agarose gels.</a> J. Biochem. Biophys. Methods. 57 (1), 35-43 (2003).</li><li>Lunn, G., Sansone, E. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Ethidium+bromide:+destruction+and+decontamination+of+solutions.">Ethidium bromide: destruction and decontamination of solutions.</a> Anal. Biochem. 162 (2), 453-458 (1987).</li><li>Li, Z., Liu, C., Zhang, D., Luo, S., Yamaguchi, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Capillary+electrophoresis+of+RNA+in+hydroxyethylcellulose+polymer+with+various+molecular+weights.">Capillary electrophoresis of RNA in hydroxyethylcellulose polymer with various molecular weights.</a> J. Chormatogr. B. 1011, 114-120 (2016).</li><li>Li, Z., Liu, C., Ma, S., Zhang, D., Yamaguchi, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Analysis+of+the+inhibition+of+nucleic+acid+dyes+on+polymerase+chain+reaction+by+capillary+electrophoresis.">Analysis of the inhibition of nucleic acid dyes on polymerase chain reaction by capillary electrophoresis.</a> Anal. Methods-UK. 8 (11), 2330-2334 (2016).</li><li>Liu, F., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Developing+a+fluorescence-coupled+capillary+electrophoresis+based+method+to+probe+interactions+between+QDs+and+colorectal+cancer+targeting+peptides.">Developing a fluorescence-coupled capillary electrophoresis based method to probe interactions between QDs and colorectal cancer targeting peptides.</a> Electrophoresis. 37 (15-16), 2170-2174 (2016).</li><li>Wang, J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+capillary+electrophoresis+method+to+explore+the+self-assembly+of+a+novel+polypeptide+ligand+with+quantum+dots.">A capillary electrophoresis method to explore the self-assembly of a novel polypeptide ligand with quantum dots.</a> Electrophoresis. 37 (15-16), 2156-2162 (2016).</li><li>Miao, P., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Nuclease+assisted+target+recycling+and+spherical+nucleic+acids+gold+nanoparticles+recruitment+for+ultrasensitive+detection+of+microRNA.">Nuclease assisted target recycling and spherical nucleic acids gold nanoparticles recruitment for ultrasensitive detection of microRNA.</a> Electrochim. Acta. 190, 396-401 (2016).</li><li>Heller, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Principles+of+DNA+separation+with+capillary+electrophoresis.">Principles of DNA separation with capillary electrophoresis.</a> Electrophoresis. 22 (4), 629-643 (2001).</li></ol>

Agarosegelelektroforese anvendes i vid udstrækning til separationen af ​​DNA, RNA og protein. Dette arbejde foreslår en ny metode til at erstatte den traditionelle gelelektroforese protokol. Resultater viser, at 50, 100 og 1000 bp DNA stiger kan adskilles godt i en sådan lille samlet enhed. Den store fordel ved denne metode er, at den ikke alene kan adskille nucleinsyrerne med lidt kemisk forbrug, men det kan også registrere separationsprocessen. Selvom DNA-fragmenterne ser bredt ud i figur ...

<html> Slabelelektroforese (SGE) er den mest effektive metode til separation af DNA fra 1 , 2 , 3 , 4 , 5 og anses således for et alsidigt redskab i biokemiske og biologiske analyser 6 , 7 , 8 . Mange eksperimenter indikerer imidlertid, at SGE er begrænset af følgende fire problemer: (1) separationerne tager mange timer og lige dage; (2) det kemiske forbrug er meget højt; (3) det kræver et kompliceret apparat ( f.eks. 2D elektroforese celle, elektroforese strømforsyning og gel billeddannelse system); (4) gel-billeddannelsessystemet kan kun observere de adskilte DNA-fragmenter, når eksperimentet er afsluttet. Desuden er ethidiumbromid (EtBr), som almindeligvis anvendes i SGE 9 ,Ass = &quot;xref&quot;&gt; 10, er mutagent og cancerogen 11 , 12 . Handsker bør således altid bæres, når der afsættes geler, der indeholder EtBr. Kapillærelektroforese (CE) har mange fordele 13 , 14 , 15 , 16 , 17 i forhold til SGE, såsom automatisk drift, kort adskillelsestid og lavere forbrug. CE-instrumentet er dog ret dyrt. For at overvinde disse begrænsninger er der derfor udviklet et system ( figur 1 ) til separation af DNA. Et sådant system kan ikke kun kraftigt reducere det kemiske forbrug og spare på SGE-eksperimentet (&lt;8 min), men det kan også udføre realtidssporing af DNA-separationsprocessen i agarosegelen ved hjælp af smartphone. Ved at følge de procedurer, der er beskrevet i denne protokol, skal eleverne shouJeg kan designe og fremstille SGE-chip, forberede agarosegelen i chippen, oprette et simpelt SGE-system med en smartphone og registrere DNA-migrationsprocessen i agarosegelen.

<table border="0" cellpadding="0" cellspacing="0" width="683">
	<tbody>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">10&#215;TBE</td>
			<td style="width:287px;">Beijing Solarbio Science &#38; Technology Co., Ltd.</td>
			<td style="width:181px;">T1051</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">50bp DNA ladder</td>
			<td style="width:287px;">Takara Bio Inc.</td>
			<td style="width:181px;">3421A</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">100bp DNA ladder</td>
			<td style="width:287px;">Takara Bio Inc.</td>
			<td style="width:181px;">3422A</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">1kbp DNA ladder</td>
			<td style="width:287px;">Takara Bio Inc.</td>
			<td style="width:181px;">3426A</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">SYBR GREEN</td>
			<td style="width:287px;">Takara Bio Inc.</td>
			<td style="width:181px;">5760A</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Agarose</td>
			<td style="width:287px;">Sigma-Aldrich Corporate</td>
			<td style="width:181px;">V900510</td>
		</tr>
	</tbody>
</table>

real-time tracking of dna fragment separation by smartphone

Slabelelektroforese (SGE) er den mest almindelige metode til separering af DNA-fragmenter; Det er således bredt anvendt til biologi og andre. Den traditionelle SGE-protokol er dog ret kedelig, og eksperimentet tager lang tid. Desuden er det kemiske forbrug i SGE-forsøg meget højt. Dette arbejde foreslår en simpel metode til adskillelse af DNA-fragmenter baseret på en SGE-chip. Chippen er lavet af en gravemaskine. To plastikplader anvendes til excitations- og emissionsbølgelængderne af det optiske signal. Fluorescenssignalet fra DNA-båndene opsamles af smartphone. For at validere denne metode blev 50, 100 og 1000 bp DNA-stiger adskilt. Resultaterne viser, at en DNA-stige mindre end 5.000 bp kan løses inden for 12 minutter og med høj opløsning ved brug af denne metode, hvilket indikerer, at det er en ideel erstatning for den traditionelle SGE-metode.

<html> Figur 4 , Figur 5 , og Figur 6 repræsenterer et typisk resultat efter gelelektroforese på 50, 100 og 1.000 bp DNA-stiger. Efter eksperimentet blev DNA-fragmenterne fraskilt. Desuden blev de samme prøver adskilt i SGE-chipets 4 kanaler, hvilket viser, at DNA-fragmenter af samme størrelse bevæger sig i samme afstand i hvert forsøg. Separationspræstationen af ​​DNA-stigen kan evalueres ved...

Watch this Scientific Journal Video about Real-time Tracking of DNA Fragment Separation by Smartphone at JoVE.com

Real-time Tracking of DNA Fragment Separation by Smartphone

Sporing af DNA-fragmenter i realtid af Smartphone

Traditionelle slabelelektroforese (SGE) eksperimenter kræver et kompliceret apparat og et højt kemisk forbrug. Dette arbejde præsenterer en protokol, der beskriver en billig metode til at adskille DNA-fragmenter inden for en kort tidsramme.

Slab gel electrophoresis (SGE) is the most common method for the separation of DNA fragments; thus, it is broadly applied to the field of biology and ...

Research

JoVE Journal

Biochemistry

DNA Polymerase Activity Assay Using Near-infrared Fluorescent Labeled DNA Visualized by Acrylamide Gel Electrophoresis

DNA Polymerase aktivitet Assay ved hjælp af nær-infrarødt fluorescerende mærket DNA visualiseret af acrylamid Gel elektroforese

For any enzyme, robust, quantitative methods are required for characterization of both native and engineered enzymes. For DNA polymerases, DNA synthesis ...

Regeneration of Arrayed Gold Microelectrodes Equipped for a Real-Time Cell Analyzer

Regenerering af klædt guld Microelectrodes udstyret til en Real-Time celle Analyzer

The label-free cell-based assay is advantageous for biochemical study because of it does not require the use of experimental animals. Due to its ability ...

Real-time Observation of the DNA Strand Exchange Reaction Mediated by Rad51

Real-time overvågning af DNA streng Exchange reaktion medieret af Rad51

The DNA strand exchange reaction mediated by Rad51 is a critical step of homologous recombination. In this reaction, Rad51 forms a nucleoprotein filament ...

DNA Sequence Recognition by DNA Primase Using High-Throughput Primase Profiling

DNA-sekvens genkendelse af DNA Primase ved hjælp af Primase profilering med høj gennemløb

DNA primase synthesizes short RNA primers that initiate DNA synthesis of Okazaki fragments on the lagging strand by DNA polymerase during DNA replication. ...

Real-Time, Semi-Automated Fluorescent Measurement of the Airway Surface Liquid pH of Primary Human Airway Epithelial Cells

Real-time, semi-automatiseret fluorescerende måling af luftvejene overflade flydende pH af primære Human luftvejs epitelial celler

In recent years, the importance of mucosal surface pH in the airways has been highlighted by its ability to regulate airway surface liquid (ASL) ...

Monitoring GPCR-&#946;-arrestin1/2 Interactions in Real Time Living Systems to Accelerate Drug Discovery

Monitoring GPCR-ÃƒÅ½Ã‚Â²-arrestin1/2 Interactions in Real Time Living Systems to Accelerate Drug Discovery

Overvågning af GPCR-β-arrestin1/2 interaktioner i realtid levende systemer til at fremskynde Drug Discovery

Interactions between G-protein coupled receptors (GPCRs) and &#946;-arrestins are vital processes with physiological implications of great importance. ...

Measuring Nucleotide Binding to Intact, Functional Membrane Proteins in Real Time

Måling af nukleotidbinding til intakte, funktionelle membranproteiner i realtid

We have developed a method to measure binding of adenine nucleotides to intact, functional transmembrane receptors in a cellular or membrane environment. ...

Enabling Real-Time Compensation in Fast Photochemical Oxidations of Proteins for the Determination of Protein Topography Changes

Aktivering af real-time kompensation i hurtige fotokemiske oxidationer af proteiner til bestemmelse af Protein Topografi Ændringer

Fast photochemical oxidation of proteins (FPOP) is a mass spectrometry-based structural biology technique that probes the solvent-accessible surface area ...

Deciphering Molecular Mechanism of Histone Assembly by DNA Curtain Technique

Chromatin is a higher-order structure that packages eukaryotic DNA. Chromatin undergoes dynamic alterations according to the cell cycle phase and in ...

Identifying G-Quadruplexes in a DNA Template Using Chemical Mapping

In Vitro Chemical Mapping of G-Quadruplex DNA Structures by Bis-3-Chloropiperidines

Characterizing DNA G-Quadruplex by Bis-3-Chloropiperidine Based Chemical Mapping (Video) | JoVE

In vitro Kemisk kortlægning af G-quadruplex DNA-strukturer af bis-3-chloropiperidiner

G-quadruplexes (G4s) are biologically relevant, non-canonical DNA structures that play an important role in gene expression and diseases, representing ...