Name: transcriptome profiling of in-vivo produced bovine pre-implantation embryos using two-color microarray platform
Uploaded: 2017-01-30T13:00:00
Description: Watch this Scientific Journal Video about Transcriptome Profiling of In-Vivo Produced Bovine Pre-implantation Embryos Using Two-color Microarray Platform at JoVE.com

Research supported by Alberta Livestock and Meat Agency, Alberta Innovates - BioSolutions, Alberta Milk, and Livestock Research Branch, Alberta Agriculture and Forestry.

The animal part of this study was conducted at the Metabolic Research Unit of the University of Alberta, Edmonton, Canada, with all animal experimental procedures approved (Protocol # AUP00000131) by the University of Alberta Animal Care and Use Committee, and animals cared for according to the Canadian Council of Animal Care guidelines (1993).
1. Embryo Production, Isolation of Total RNA and DNase Treatment
<ol>
	<li>For animal experimental protocols and embryo collection refer in our previous publications<sup ...

<ol>
	<li>Royal, M. D., Smith, R. F., Friggens, N. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Fertility+in+dairy+cows:+bridging+the+gaps.">Fertility in dairy cows: bridging the gaps.</a> Animal. 2 (08), 1101-1103 (2008).</li><li>Diskin, M. G., Murphy, J. J., Sreenan, J. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Embryo+survival+in+dairy+cows+managed+under+pastoral+conditions.">Embryo survival in dairy cows managed under pastoral conditions.</a> Anim. Reprod. Sci. 96 (3-4), 297-311 (2006).</li><li>Wrenzycki, C., 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=Effects+of+culture+system+and+protein+supplementation+on+mRNA+expression+in+pre-implantation+bovine+embryos.">Effects of culture system and protein supplementation on mRNA expression in pre-implantation bovine embryos.</a> Hum. Reprod. 16 (5), 893-901 (2001).</li><li>Menezo, Y. J., Herubel, F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mouse+and+bovine+models+for+human+IVF.">Mouse and bovine models for human IVF.</a> Reprod. Biomed. Online. 4 (2), 170-175 (2002).</li><li>Schena, M., Shalon, D., Davis, R. W., Brown, P. O. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Quantitative+monitoring+of+gene+expression+patterns+with+a+complementary+DNA+microarray.">Quantitative monitoring of gene expression patterns with a complementary DNA microarray.</a> Science. 270 (5235), 467-470 (1995).</li><li>Patterson, T. A., 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=Performance+comparison+of+one-color+and+two-color+platforms+within+the+MicroArray+Quality+Control+(MAQC)+project.">Performance comparison of one-color and two-color platforms within the MicroArray Quality Control (MAQC) project.</a> Nat. Biotechnol. 24 (9), 1140-1150 (2006).</li><li>Rhodes, D. R., Chinnaiyan, A. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Integrative+analysis+of+the+cancer+transcriptome.">Integrative analysis of the cancer transcriptome.</a> Nat. Genetics. 37, 31-37 (2005).</li><li>Robert, C., 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=Combining+resources+to+obtain+a+comprehensive+survey+of+the+bovine+embryo+transcriptome+through+deep+sequencing+and+microarrays.">Combining resources to obtain a comprehensive survey of the bovine embryo transcriptome through deep sequencing and microarrays.</a> Mol. Reprod. Dev. 78 (9), 651-664 (2011).</li><li>Nygaard, V., Hovig, E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Options+available+for+profiling+small+samples:+a+review+of+sample+amplification+technology+when+combined+with+microarray+profiling.">Options available for profiling small samples: a review of sample amplification technology when combined with microarray profiling.</a> Nucleic Acids Res. 34 (3), 996-1014 (2006).</li><li>Kurn, N., Chen, P., Heath, J. D., Kopf-Sill, A., Stephens, K. M., Wang, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Novel+isothermal,+linear+nucleic+acid+amplification+systems+for+highly+multiplexed+applications.">Novel isothermal, linear nucleic acid amplification systems for highly multiplexed applications.</a> Clin Chem. 51 (10), 1973-1981 (2005).</li><li>Van Gelder, R. 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F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Extended+analysis+of+benchmark+datasets+for+Agilent+two-color+microarray.">Extended analysis of benchmark datasets for Agilent two-color microarray.</a> BMC Bioinformatics. 8, 371 (2007).</li><li>Zhu, Q., Miecznikowski, J. C., Halfon, M. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+wholly+defined+Agilent+microarray+spike-in+dataset.">A wholly defined Agilent microarray spike-in dataset.</a> Bioinformatics. 27 (9), 1284-1289 (2011).</li><li>Vallee, M., Gravel, C., Palin, M. F., Reghenas, H., Stothard, P., Wishart, D. S., Sirard, M. 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The first problem to perform microarray analysis using Day 7 bovine embryos is not getting sufficient amounts of high quality RNA for studying gene expression. Traditional phenol/chloroform RNA extraction and ethanol precipitation method is not recommended for Day 7 embryos, resulting in low yield and possible leftover phenol inhibiting RNA amplification reaction. Instead, a standard column-based method is better to isolate total RNA and then elute the RNA with minimum elution buffer to increase the concentration. An ave...

Early embryonic loss in high-producing dairy cows is one of the main challenges in the dairy industry1,2. Bovine has become an interesting model to study human preimplantation embryo development due to their similar developmental process3,4. However, more research is required to have better understanding about genes involved in bovine early embryonic development.
After twenty years since the first microarray technology developed in 19955, the development of more sophisticated probe fabrication technology reduced printing errors and variability of array chips within and between different microarray platforms6. Improved microarray technology resulted in a widely application of this technology in clinical research7 and more recently, in early embryo quality assessment8.
The large amount of required material for microarray technology is the main reason why the microarray technology initially failed to enter a number of research fields such as early embryonic development. More recently, RNA amplification methods have been improved to linearly amplify RNA up to micrograms level from sub-nanogram starting RNA material9. There are several commercial RNA amplification kits available on the market; however, the more popular well developed kits are related to Ribo-Single Primer Isothermal Amplification10 and T7 promoter driven11 methods. The most popular antisense RNA amplification uses in vitro transcription with an oligo dT primer linking to a T7 promoter at 5&#39; end12. This technology allows maintaining the most of representative anti-sense transcripts after linear amplification for arrays hybridization13. This method has been adapted to amplify picogram level of total RNA extracted from bovine embryo8.
Universal Linkage System (ULS) is the labeling method which directly incorporates the DNA or amplified RNA with platinum-linked fluorescent dye either Cyanine 547 or Cyanine 647, by forming a coordinative bond on N7 position of guanine14. This method was adapted in embryos research to generate more stable amplified aRNA without modification compared to the aminoallyl modified aRNA generated by enzymatic method15. Both single dye and two dyes labeling methods have been adapted using Universal Linkage System in microarray. A large microarray comparisons study was that there is a good correlation of data quality between the one- and two-color array platforms6.
Recently, both T7 promoter driven antisense RNA amplification and ULS labeling methods have been developed to provide a more reliable protocol to generate a sufficient amount of high quality labeled aRNA materials for microarray hybridization8,16. Therefore, this study provides a protocol to demonstrate some of the important steps from RNA extraction to data analysis involved in two-color microarray using Day 7 bovine embryos as an example.

<table border="1" fo:keep-together.within-page="1" fo:keep-with-next.within-page="always">
	<tbody>
		<tr>
			<td>PicoPure RNA Isolation Kit</td>
			<td>Applied Biosystems</td>
			<td>KIT0204</td>
			<td></td>
		</tr>
		<tr>
			<td>RNase-Free DNase Set (50)</td>
			<td>Qiagen</td>
			<td>79254</td>
			<td></td>
		</tr>
		<tr>
			<td>Agilent RNA 6000 Pico Kit</td>
			<td>Agilent Technologies</td>
			<td>5067-1513</td>
			<td></td>
		</tr>
		<tr>
			<td>Arcturus RiboAmp HS PLUS Kit</td>
			<td>Applied Biosystems</td>
			<td>KIT0505</td>
			<td></td>
		</tr>
		<tr>
			<td>2100 Bioanalyzer Instruments</td>
			<td>Agilent Technologies</td>
			<td>G2940CA</td>
			<td></td>
		</tr>
		<tr>
			<td>RNA Screen Tape</td>
			<td>Agilent Technologies</td>
			<td>5067-5576</td>
			<td></td>
		</tr>
		<tr>
			<td>ULS Fluorescent Labeling Kit</td>
			<td>Kreatech Diagnostics</td>
			<td>EA-021</td>
			<td></td>
		</tr>
		<tr>
			<td>Custom Gene Expression Microarrays</td>
			<td>Agilent Technologies</td>
			<td>G2514F</td>
			<td></td>
		</tr>
		<tr>
			<td>&#160;Agilent Gene Expression wash buffer 1</td>
			<td>Agilent Technologies</td>
			<td>Part #5188-5325</td>
			<td></td>
		</tr>
		<tr>
			<td>Agilent Gene Expression wash buffer 2</td>
			<td>Agilent Technologies</td>
			<td>Part #5188-5326</td>
			<td></td>
		</tr>
		<tr>
			<td>2X Hi-RPM Hybridization buffer</td>
			<td>Agilent Technologies</td>
			<td>&#160;Part #5190-0403</td>
			<td></td>
		</tr>
		<tr>
			<td>25X Fragment buffer</td>
			<td>Agilent Technologies</td>
			<td>Part #5185-5974</td>
			<td></td>
		</tr>
		<tr>
			<td>10X GE Blocking Agent</td>
			<td>Agilent Technologies</td>
			<td>Part #5188-5281</td>
			<td></td>
		</tr>
		<tr>
			<td>Stabilization and drying solution</td>
			<td>Agilent Technologies</td>
			<td>&#160;Part #5185-5979</td>
			<td></td>
		</tr>
		<tr>
			<td>Gasket slides enabled by Agilent SureHyb techonolgy</td>
			<td>Agilent Technologies</td>
			<td>G2524-60012</td>
			<td>Pack of 20 gasket slides, 4 microarrays/slide</td>
		</tr>
		<tr>
			<td>Two-Color RNA Spike-In Kit</td>
			<td>Agilent Technologies</td>
			<td>&#160;Cat# 5188-5279</td>
			<td></td>
		</tr>
		<tr>
			<td>GenePix 4000B array scanner</td>
			<td>Molecular Devices</td>
			<td>GENEPIX 4000B-U</td>
			<td></td>
		</tr>
		<tr>
			<td>Ozone Free Box</td>
			<td>BioTray</td>
			<td>OFB_100x200</td>
			<td></td>
		</tr>
		<tr>
			<td>GAL file</td>
			<td>Agilent Technologies</td>
			<td>-</td>
			<td></td>
		</tr>
	</tbody>
</table>

transcriptome profiling of in-vivo produced bovine pre-implantation embryos using two-color microarray platform

Early embryonic loss is a large contributor to infertility in cattle. Moreover, bovine becomes an interesting model to study human preimplantation embryo development due to their similar developmental process. Although genetic factors are known to affect early embryonic development, the discovery of such factors has been a serious challenge. Microarray technology allows quantitative measurement and gene expression profiling of transcript levels on a genome-wide basis. One of the main decisions that have to be made when planning a microarray experiment is whether to use a one- or two-color approach. Two-color design increases technical replication, minimizes variability, improves sensitivity and accuracy as well as allows having loop designs, defining the common reference samples. Although microarray is a powerful biological tool, there are potential pitfalls that can attenuate its power. Hence, in this technical paper we demonstrate an optimized protocol for RNA extraction, amplification, labeling, hybridization of the labeled amplified RNA to the array, array scanning and data analysis using the two-color analysis strategy.

A representative result of total RNA and amplified aRNA from Day 7 bovine embryos is shown in Figure 3 and summarized in Table 1.
RNA integrity and profile can be assessed after RNA extraction. Quality assessment of RNA could be done by bioanalyzer instrument (Figure 3A) and only those samples with RIN value higher than 7.0 are qualified to be used for amplification (Tab...

Watch this Scientific Journal Video about Transcriptome Profiling of In-Vivo Produced Bovine Pre-implantation Embryos Using Two-color Microarray Platform at JoVE.com

Transcriptome Profiling of In-Vivo Produced Bovine Pre-implantation Embryos Using Two-color Microarray Platform

Microarray technology allows quantitative measurement and gene expression profiling of transcripts on a genome-wide basis. Therefore, this protocol provides an optimized technical procedure in a two-color custom made bovine array using Day 7 bovine embryos to demonstrate the feasibility of using low amount of total RNA.

Transcriptome Profiling of In-Vivo Produced Bovine Pre-implantation Embryos Using Two-color Microarray Platform

Early embryonic loss is a large contributor to infertility in cattle. Moreover, bovine becomes an interesting model to study human preimplantation embryo ...

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