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Genes with expression level regulated by genotype (N2 vs CB4856) and age at L3 larva and Late reproduction stage (96 hours at 24 centigrade). |
For model 2, authors used 100 permutations to estimate the FDR threshold. Per permutation, genotypes and ages were independently randomly distributed, keeping the among-gene structure intact. Then for each spot (23,232) on the array, model 2 was tested. The obtained P-values were used to estimate a threshold for each of the explanatory factors. Authors also used a genome-wide threshold of -log10 P-value = 2, which resembles an FDR of 0.072 and 0.060 for marker and the interaction age-marker for the developing worms and FDR of 0.050 and 0.065 for marker and age-marker for the aging worms. For the physiological age effect, authors used a log10 P-value = 8 in developing worms (0.012 FDR) and -log10 P-value = 6 (0.032 FDR). |
WBPaper00040858:eQTL_age_regulated_developing
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Genes with expression level regulated by genotype (N2 vs CB4856) at L3 larva and Late reproduction stage (96 hours at 24 centigrade). |
For model 2, authors used 100 permutations to estimate the FDR threshold. Per permutation, genotypes and ages were independently randomly distributed, keeping the among-gene structure intact. Then for each spot (23,232) on the array, model 2 was tested. The obtained P-values were used to estimate a threshold for each of the explanatory factors. Authors also used a genome-wide threshold of -log10 P-value = 2, which resembles an FDR of 0.072 and 0.060 for marker and the interaction age-marker for the developing worms and FDR of 0.050 and 0.065 for marker and age-marker for the aging worms. For the physiological age effect, authors used a log10 P-value = 8 in developing worms (0.012 FDR) and -log10 P-value = 6 (0.032 FDR). |
WBPaper00040858:eQTL_regulated_developing
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Bacteria infection: Photorhabdus luminescens |
Genes down-regulated in animals infected with Photorhabdus luminescens compared to the E. coli OP50 control after 24h of infection. |
MAANOVA and BRB-Array-Tools. |
WBPaper00030985:Photorhabdus_luminescens_downregulated
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Transcripts that showed significantly increased expression after exposure to 75uM paraquat(PQ) from L1 to day 2 adult stage in skn-1(lax188) animals |
fold change > 2 |
WBPaper00058711:paraquat_upregulated
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Transcripts that showed significantly increased expression in wdr-5(ok1417);skn-1(lax188) comparing to in skn-1(lax188) at day 2 adult stage. |
fold change > 2 |
WBPaper00058711:wdr-5(ok1417)_upregulated
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Transcripts that showed significantly increased expression in 10-days post L4 adult hermaphrodite N2 grown at 20C, comparing to in 1-day post L4 adult hermaphrodite N2 animals grown at 20C. |
CuffDiff, fold change > 2. |
WBPaper00065096:Day10_vs_Day1_upregulated
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Transcripts that showed significantly decreased expression in 10-days post L4 adult hermaphrodite npr-8(ok1439) animals grown at 20C, comparing to in N2 animals. |
CuffDiff, fold change > 2. |
WBPaper00065096:npr-8(ok1439)_downregulated_Day10_20C
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Transcripts that showed significantly decreased expression in eat-2(ad1116) comparing to in N2 at 3-days post L4 adult hermaphrodite animals. |
DESeq2(v1.14.1), fold change > 2, p-value < 0.05 |
WBPaper00055354:eat-2(ad1116)_downregulated
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Genes with expression level regulated by genotype (N2 vs CB4856) at L3 larva stage |
Authors permuted transcript values and used a genome-wide threshold of log10 P-value = 2, which resembles a false discovery rate (FDR) of 0.0129. |
WBPaper00040858:eQTL_regulated_juvenile
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Significantly upregulated genes from cyc-1(RNAi) microarrays using SAM algorithm with an FDR < 0.1 from adult-only chips. |
SAM algorithm with an FDR < 0.1. |
WBPaper00033065:cyc-1(RNAi)_upregulated
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Genes regulated by spr-5 (greater than 2-fold change between spr-5(by101) generations 1, 13, and 26). |
Significantly differentially regulated genes were selected by using a 2-fold ifference along with intensity values > 1000. |
WBPaper00033101:spr-5_regulated
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Fungi infection: Harposporium sp. |
Genes with decreased expression after 24 hours of infection by Harposporium Fold changes shown are pathogen vs OP50. |
For RNA-seq and tiling arrays, log2 fold changes between gene expression values of infected versus uninfected nematodes were calculated. For log2 fold changes > 0.00001 the values > 81.25th percentile were defined as up-regulated and for log2 fold changes < -0.00001 the values < 18.75th percentile were defined as down-regulated. |
WBPaper00038438:Harposporium_24hr_downregulated_RNAseq
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Genes with differential expression under 0.5mg/l Chlorpyrifos (CPF) treatment at 16 centigrade. |
To identify the differentially expressed genes in each treatment authors used linear models per toxicant and temperature (gene expression = Toxicant (effect) + error). The lm function in R stats package was used to implement the linear models analysis with recommended default options. For threshold determination authors used a permutation approach. For each of the 23,232 permutations used authors randomly picked a transcript (array spot), which could only be picked once. Authors combined all the expression values of this transcript and randomly distributed them over the replicates and used them in the linear model. In this way authors obtained a threshold for each of the toxicants. Authors used a -log10 p-value 2 as common threshold for the analysis, which resembles to the following FDR per toxicant: 0.0155 for CPF at 24 centigrade, 0.0148 for DZN at 24 centigrade, 0.0168 for CPF+DZN at 24 centigrade, 0.0142 for CPF at 16 centigrade, 0.0151 for DZN at 16 centigrade, and 0.0148 for CPF+DZN, at 16 centigrade. |
WBPaper00040210:Chlorpyrifos_16C_regulated
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Temperature Shift: 25C vs 15C for 16 hours at L4 larva stage. |
Transcripts that showed significantly increased expression in AFD neurons comparing to in whole animals. |
DESeq2, fold change > 2, FDR < 0.05. |
WBPaper00065158:AFD_enriched
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Transcripts that showed significantly decreased expression after 24 hours of induction of human beta Amyloid at young adult stage |
A 2-fold change in expression level and a false discovery rate analog of p < 0.05. |
WBPaper00064130:Beta-Amyloid_24h_downregulated_mRNA
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Genome-wide analysis of developmental and sex-regulated gene expression profile. |
self-organizing map |
cgc4489_group_9
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Bacteria infection: Serratia marcescens |
Genes with decreased expression after 24 hours of infection by S.marcescens Fold changes shown are pathogen vs OP50. |
For RNA-seq and tiling arrays, log2 fold changes between gene expression values of infected versus uninfected nematodes were calculated. For log2 fold changes > 0.00001 the values > 81.25th percentile were defined as up-regulated and for log2 fold changes < -0.00001 the values < 18.75th percentile were defined as down-regulated. |
WBPaper00038438:S.marcescens_24hr_downregulated_TilingArray
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Transcripts that showed significantly decreased expression after animals were treated with 100uM Rapamycin, 50uM Rifampicin and 100uM Psora from day 1 to day 3 adult hermaphradite. |
DESeq2(v1.14.1), fold change > 2, p-value < 0.05 |
WBPaper00055354:Rapamycin-Rifampicin-Psora_downregulated
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Genes with small RNAs downregulated in all four meg-3(ax3055) meg-4(ax3052) strains comparing to N2 |
DESeq2 |
WBPaper00057162:meg-3_meg-4_downregulated_sRNA
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Bacteria diet: Comamonas sp. 12022 MYb131 |
Transcripts that showed significantly increased expression after animals were fed by Comamonas sp. 12022 MYb131, comparing to animals fed by OP50. |
edgeR FDR <= 0.05, fold change >= 4. |
WBPaper00061424:Diet_MYb131_upregulated
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Transcripts that showed significantly increased expression in shk-1(yum1003) comparing to in N2 animals. |
DESeq2 v1.36.0, fold change > 2, FDR < 0.05. |
WBPaper00067803:shk-1(yum1003)_upregulated
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Coexpression clique No. 211, srj-42-srw-113, on the genome-wide coexpression clique map for the nematode GPL200 platform. |
All available microarray datasets for the GPL200 platform (Affymetrix C. elegans Genome Array) were obtained from the GEO repository. This included 2243 individual microarray experiments. These were normalized against each other with the software RMAexpress (Bolstad, 2014). Based on these normalized values, Pearsons correlation coefficients were obtained for each probe-probe pair of the 22,620 probes represented on this array type. The resulting list of correlation coefficients was then ranked to generate the ranked coexpression database with information on each probe represented on the GPL200 platform. |
WBPaper00061527:srj-42-srw-113
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Down-regulated genes under 0.5mg/l CPF treatment at 16 centigrade. |
The Rank Product package was used to identify the differentially expressed genes between controls and treatment in each experiment. Briefly, genes were ranked based on up- or downregulation by the treatment in each experiment. Then, for each gene a combined probability was calculated as a rank product (RP). The RP values were used to rank the genes based on how likely it was to observe them by chance at that particular position on the list of differentially expressed genes. The RP can be interpreted as a p-value. To determine significance levels, the RP method uses a permutation-based estimation procedure to transform the p-value into an e-value that addresses the multiple testing problem derived from testing many genes simultaneously. Genes with a percentage of false-positives (PFP) < 0.05 were considered differentially expressed between treatments and control in each experiment. This method has the advantage to identify genes with a response to the toxicants even when the absolute effect of the response was low. Because authors used sub-lethal concentrations of the toxicants, methods that use thresholds based on absolute fold change would not identify small changes in gene expression. Moreover, RP has proved to be a robust method for comparing microarray data from different sources and experiments. |
WBPaper00037113:CPF_16C_down-regulated
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Expression Pattern Group G, enriched for genes involved in locomotion. |
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_G
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Top 300 transcripts enriched in body wall muscle cell according to single cell RNAseq. |
Top 300 enriched transcripts were determined by log2.ratio of the tpm in the cell type vs the tpm in the other cells * the log2 of the cell.type tpm. |
WBPaper00061340:Body_wall_muscle
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