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Relative Quantification run files need to be imported into a Relative ...

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Analysis with SDS2.21. AnalysisAnalysis Settings2. In the Ct Analysis Section of the Analysis settings Window:- from the "Detec<strong>to</strong>r:" drop down menu select "All Detec<strong>to</strong>rs"- Choose "Au<strong>to</strong>matic Ct" (this will also default you <strong>to</strong>"Au<strong>to</strong>matic Baseline"). We recommend that you use theau<strong>to</strong>mated Ct and baseline features for optimum data quality,but you can also choose <strong>to</strong> set each of these manually.3. In the Gene Expression Section:- choose the proper sample1 from the "Calibra<strong>to</strong>r Sample:" dropdown menu.- Choose the proper detec<strong>to</strong>r2 from the "Endogenous ControlDetec<strong>to</strong>r:" drop down menu (Only detec<strong>to</strong>rs defined asEndogenous controls in the task section of the original <strong>run</strong>file will <strong>be</strong> available).- If you wish your exported data <strong>to</strong> contain the Ct values aswell as the analysis, check the "Export Individual ΔCts" box.- Left click Apply then left click OK.4. AnalysisAnalyze5. FileExport:- From the "Export:" drop down menu, select "Results Table".- In the "From:" section check "All wells" <strong>to</strong> export data fromall the wells containing data of "Selected Wells" <strong>to</strong> exportdata from highlighted wells only.- In the "Format:" section select SDS2.2.- Give the file a proper name and make sure the "Files of type:"drop down menu is set <strong>to</strong> "Tab-delimited Text(*.txt)".- Left click the Export but<strong>to</strong>n.This text file should <strong>be</strong> <strong>imported</strong> in<strong>to</strong> MS Excel <strong>be</strong>fore further use.The data can <strong>be</strong> copied and pasted or the text file itself can <strong>be</strong> openedwith (and saved as) an Excel file. From this exported file you shouldhave the individual Ct values (if you choose <strong>to</strong> export them, see step 3above) as well as the analysis. The RQ column displays the calculatedlevel of gene expression for the replicate group associated with thetest sample. If it is greater than 1, this is a positive fold changeof that value. If the RQ is less than 1, you must divide negative 1 bythat value <strong>to</strong> obtain the true negative fold change value. This can <strong>be</strong>done by entering the following formula in<strong>to</strong> a cell in the Excel file(replace A1 with whichever cell contains the RQ value.=IF(A1


Analysis with "QPCR analysis template.xls"If you choose <strong>to</strong> do your calculations without the aid of SDS2.2 youwill still have <strong>to</strong> use SDS2.2 <strong>to</strong> export the individual Ct values asfollows:1. AnalysisAnalysis Settings2. In the Ct Analysis Section of the Analysis settings Window:- from the "Detec<strong>to</strong>r:" drop down menu select "All Detec<strong>to</strong>rs"- Choose "Au<strong>to</strong>matic Ct" (this will also default you <strong>to</strong>"Au<strong>to</strong>matic Baseline"). We recommend that you use theau<strong>to</strong>mated Ct and baseline features for optimum data quality,but you can also choose <strong>to</strong> set each of these manually.3. In the Gene Expression Section, check the "Export IndividualΔCts" box.4. Left click Apply then left click OK.5. AnalysisAnalyze6. FileExport:- From the "Export:" drop down menu, select "Results Table".- In the "From:" section check "All wells" <strong>to</strong> export data fromall the wells containing data of "Selected Wells" <strong>to</strong> exportdata from highlighted wells only.- In the "Format:" section select SDS2.2.- Give the file a proper name and make sure the "Files of type:"drop down menu is set <strong>to</strong> "Tab-delimited Text(*.txt)".- Left click the Export but<strong>to</strong>n.We recommend importing the data in<strong>to</strong> MS Excel <strong>be</strong>fore further use. Thedata can <strong>be</strong> copied and pasted or the text file itself can <strong>be</strong> openedwith (and saved as) a MS Excel file. From this exported file youshould have the individual Ct values, ignore the analysis table. Thesevalues can <strong>be</strong> copied and pasted as appropriate in<strong>to</strong> the "QPCR analysistemplate.xls". This spreadsheet will au<strong>to</strong>matically calculate the RQ aswell as the fold change values. The derivation and explanation of theformulas used in this sheet are explained in ABI User Bulletin#2.1 The calibra<strong>to</strong>r sample serves as the basis for the comparative resultsas gene expression levels in samples are calculated relative <strong>to</strong> geneexpression levels in the calibra<strong>to</strong>r sample.2 Endogenous control targets are typically constitutive RNA or DNAsequences that are present at a statistically consistent level in allexperimental samples. By using the Endogenous control as an activereference, the data from the amplification of the targets can <strong>be</strong>normalized for differences in the amount of <strong>to</strong>tal nucleic acid added <strong>to</strong>each reaction

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