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Genes with expression altered >= 3-fold in dpy-10(e128) mutants. |
Data across the wild type series was analyzed using the Significance analysis of Microarrays (SAM) algorithm (to calculate the False Discovery Rate (FDR)). |
WBPaper00035873:dpy-10_regulated
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Genes found to be regulated by low-copy overexpression of sir-2.1 with p < 0.014. |
N.A. |
WBPaper00026929:sir-2.1_overexpression_regulated
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Treatment with 0.2mM of HuminFeed until young adult stage (3 days). |
Gene significantly up-regulated by treatment with 0.2mM of HuminFeed until young adult stage (3 days), with a minimum fold change in gene expression of 1.25. |
For selection of DEGs, an unpaired t -test was performed followed by a significance analysis of microarray (SAM) test including a calculation that estimates the false discovery rate (FDR). FDR, reducing on the one hand type I errors for null associations, was set to a non-stringent level of <12.5%, mainly to guard from an increase of type II error and also based on findings by Levine et al. (2011), which described 12.5% as most acceptable optimum level of FDR, representing the 90th percentile of the normal distribution curve. DEGs exceeding a fold change of 1.25 were further analyzed with respect to their functional clustering. This fold-cut-off was chosen to allow an interpretation that is biologically meaningful, akin to the notion that data of sound technical and experimental quality which returns strong, statistically significant, absolute signal intensities is sufficiently robust to justify a fold-cut-off of >1.2. This analysis was conducted using the functional annotation clustering tool of the Database for Annotation, Visualization, and Integrated Discovery (DAVID; Huang et al., 2007). |
WBPaper00041002:HF_3d_0.2mM_Up
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Bacteria diet: Lactobacillus rhamnosus CNCM I-3690 |
Differentially expressed genes between C.elegans fed with L.rhamnosus strain CNCM I-3690 and control strain E.coli OP50 after 3 days of feeding. |
Differential expression was assayed via limma. Genes were considered differentially expressed when the multiple testing adjusted P-value < 0.01. |
WBPaper00041906:I-3690_vs_OP50_3d
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Genes found to be regulated in daf-16(mgDf50) by resveratrol treatment with p < 0.01. |
N.A. |
WBPaper00026929:Resveratrol_regulated_daf-16
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Genes with expression altered >= 3-fold in dpy-9(e12) mutants. |
Data across the wild type series was analyzed using the Significance analysis of Microarrays (SAM) algorithm (to calculate the False Discovery Rate (FDR)). |
WBPaper00035873:dpy-9_regulated
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Genes up regulated by mir-243(n4759). |
RNAs that changed at least 2-fold with a probability of p > 0.05 in three biological replicates were considered differentially regulated between wild-type and mir-243. |
WBPaper00036130:mir-243_up_regulated
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Transcripts with significantly decreased expression after treatment with 0.1mM paraquat vs. control |
Comparisons of each genotype were compared to the wild-type using the Empirical Base (Wright & Simon) algorithm and fold changes were represented on a log2 scale. A threshold of p < 0.05 and a fold change of 1.3 (log2) was set to determine differentially expressed targets. |
WBPaper00045263:0.1mM-paraquat_downregulated
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Transcripts with significantly decreased expression in isp-1(qm150) vs. N2, and in isp-1(qm150)ced-4(n1162) vs. ced-4(n1162). |
Comparisons of each genotype were compared to the wild-type using the Empirical Base (Wright & Simon) algorithm and fold changes were represented on a log2 scale. A threshold of p < 0.05 and a fold change of 1.3 (log2) was set to determine differentially expressed targets. |
WBPaper00045263:isp-1(qm150)_downregulated
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Transcripts with significantly decreased expression in nuo-6(qm200) vs. N2, and in nuo-6(qm200);ced-4(n1162) vs. ced-4(n1162). |
Comparisons of each genotype were compared to the wild-type using the Empirical Base (Wright & Simon) algorithm and fold changes were represented on a log2 scale. A threshold of p < 0.05 and a fold change of 1.3 (log2) was set to determine differentially expressed targets. |
WBPaper00045263:nuo-6(qm200)_downregulated
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Transcripts with significantly decreased expression under all of these conditions |
Comparisons of each genotype were compared to the wild-type using the Empirical Base (Wright & Simon) algorithm and fold changes were represented on a log2 scale. A threshold of p < 0.05 and a fold change of 1.3 (log2) was set to determine differentially expressed targets. |
WBPaper00045263:ProLongevity-mtROS_downregulated
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Germline-enriched and sex-biased expression profile cluster D. |
hierarchical clustering |
[cgc6390]:Cluster_D
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Expression Pattern Group E, enriched for genes involved in dephosphorylation. |
The significance (P 0.0001) of the relative age (time) was used to determine if a gene was differentially expressed between the three age (time) groups. The effect of this factor explaining gene expression differences was used to determine if the expression went up or down during the two age/time periods (t1 - t2 and t2 -t3). Authors used a permutation approach to determine the thresholds for the different mapping strategies. For each of the used models for eQTL mapping, authors used 23,000 permutations. For each permutation, authors randomly picked a spot; each spot could only be picked once. The gene expression and relative lifespan values were than randomly distributed over the RILs (and time points) and used for mapping. In this way, authors obtained a threshold for each of the explaining factors. For the single time points, authors used a FDR of 0.01 to adjust for multiple testing. The genome-wide threshold for this FDR is -log10 P = 3.8 for each of the three time points. For the combined models (t1 to t2 and t2 to t3), authors used a genome-wide threshold of -log10 P = 4, which resembles an FDR of 0.006, 0.001, and 0.006 for marker, age, and the interaction between marker and age, respectively. To determine the threshold for the single gene examples, authors used 1000 permutations as in the genome-wide threshold. The difference is that they use the gene under study in all of the permutations. The P-values for the gene specific thresholds were determined at FDR = 0.05. |
WBPaper00036286:Pattern_E
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spermatogenesis-enriched |
Comparisons were made between genotypes by subtracting the mean log value of one ratio from another, and the significance of the difference was evaluated using Student t-test for two populations. For the fem-3(gf) versus fem-1(lf) direct comparison, authors performed the same analysis, except they used a Students t-test for one population. Author chose a combination of a twofold difference with a t value exceeding 99% confidence (P < 0.01), because these criteria allowed the inclusion of essentially all genes that had previously been identified as germline-enriched in a wt/glp-4 hermaphrodite comparison. Additionally, requiring a twofold difference reduced false positives, as the number of genes with two-fold difference and a P<0.01 only included ~100 genes more than with P < 0.001, and almost all genes showed germline expression by in situ hybridization. |
[cgc6390]:spermatogenesis-enriched
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Transcripts that showed significantly increased expression in mrps-5(RNAi) comparing to in control animals. |
Fold change > 4, p-value < 0.01 |
WBPaper00056330:mrps-5(RNAi)_upregulated
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Bacteria diet: Comamonas sp. DA1877 |
Genes upregulated on Comamonas DA1877 relative to E. coli OP50, Gravid adult stage |
Moderated T statistics in Limma was used to calculate significance. Significance was determined using an adjusted p value. Changes in gene expression that were 2-fold (p < 0.001) or greater were considered significantly changed. |
WBPaper00042258:DA1877_upregulated_GravidAdult
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Genes up-regulated after 100 um Quercetin treatment. Fold change > 1.25. |
GCRMA |
WBPaper00040963:Q100_up
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Genes up-regulated after 200 um Quercetin treatment. Fold change > 1.25. |
GCRMA |
WBPaper00040963:Q200_up
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Treatment with 2.0mM of HuminFeed until young adult stage (3 days). |
Gene significantly down-regulated by treatment with 2.0mM of HuminFeed until young adult stage (3 days), with a minimum fold change in gene expression of 0.8. |
For selection of DEGs, an unpaired t -test was performed followed by a significance analysis of microarray (SAM) test including a calculation that estimates the false discovery rate (FDR). FDR, reducing on the one hand type I errors for null associations, was set to a non-stringent level of <12.5%, mainly to guard from an increase of type II error and also based on findings by Levine et al. (2011), which described 12.5% as most acceptable optimum level of FDR, representing the 90th percentile of the normal distribution curve. DEGs exceeding a fold change of 1.25 were further analyzed with respect to their functional clustering. This fold-cut-off was chosen to allow an interpretation that is biologically meaningful, akin to the notion that data of sound technical and experimental quality which returns strong, statistically significant, absolute signal intensities is sufficiently robust to justify a fold-cut-off of >1.2. This analysis was conducted using the functional annotation clustering tool of the Database for Annotation, Visualization, and Integrated Discovery (DAVID; Huang et al., 2007). |
WBPaper00041002:HF_3d_2.0mM_Down
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Genes up regulated in aak-2 over expression line uthIs202[Paak-2c |
To identify genes that were significantly differentially expressed between each mutant and the control, linear modelling and empirical Bayes analysis was performed using the limma package. Limma computes an empirical Bayes adjustment for the t-test (moderated t-statistic), which is more robust than the standard two-sample t-test comparisons. To correct for multiple testing, Benjamin and Hochbergs method to control for false discovery rate was used. Genes with an adjusted P value of 0.05 or smaller and a fold-change in expression larger than twofold were considered differentially expressed. |
WBPaper00038172:aak-2overexpression_up_regulated
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Genome-wide analysis of developmental and sex-regulated gene expression profile. |
self-organizing map |
cgc4489_group_16
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