Experiment / E9E004009Integrated lentiMPRA

Primary human colonic epithelial cell metabolite-MPRA

Interactions Between Dietary Metabolites and Regulatory Risk Variants for Human Colon Cancer

A hard-barcoded lentiviral MPRA library tested 1,595 CRC-associated variants in 155-bp GRCh38 genomic contexts, with 10 barcodes per allelic fragment. Primary human colonic epithelial cells were exposed to sodium butyrate or deoxycholic acid (DCA) alongside vehicle controls, and the released table reports fragment-level allelic, treatment, and interaction effects.

Processed tables are specific to each experiment. Column names, units, measurements, and table structure are not standardized across the database. Check this experiment’s column definitions and quality-control notes before comparing or combining data.

Perturbation & assay details

Vehicle control; sodium butyrate (2–5 mM) for 6, 12, or 24 h; deoxycholic acid (100–200 uM) for 12, 24, or 48 h.

The study describes lentiviral delivery and transduction of primary human colonic epithelial cells. The library used fixed (hard) barcodes, 155-bp variant-centered CRE fragments, a 22-bp random filler, and a 20-bp barcode; RNA/DNA barcode ratios were analyzed with MPRAnalyze.

Processed data

50 rows per page. Click a cell to inspect its full value.

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Filters apply to this table only. The CSV download contains the complete processed table; filtered rows are available through the API.

Column dictionary · 101 definitions
variant_id
dbSNP rsID for the tested variant.
orientation
Construct orientation; all primary-colon constructs are forward orientation.
chromosome
GRCh38 chromosome from Supplementary Data S3.
position_grch38
1-based GRCh38 position from Supplementary Data S3.
variant_coord_grch38
GRCh38 coordinate string from Supplementary Data S3.
ref_allele
Reference allele used in the library annotation; semicolon-separated when S3 contains multiple records.
alt_allele
Alternate allele used in the library annotation; semicolon-separated when S3 contains multiple records.
index_snp
CRC GWAS index SNP or SNPs linked to this tested variant in S3.
tested_in_mpra
MPRA library membership reported in S3.
transcript_annotation
S3 transcript-context annotation, such as intron, promoter, coding, or intergenic.
epigenome_annotation
Semicolon-separated epigenomic peak annotations used for library selection in S3.
source_sheet
Supplementary workbook result sheet used to populate the row.
source_row
1-based row number in the source worksheet.
allelic_logfc_alt_vs_ref
Baseline alternate-versus-reference fragment activity effect size (authors' logFC).
allelic_se
Standard error of the baseline alternate-versus-reference effect.
allelic_pvalue
P-value for the baseline allele effect.
allelic_fdr
FDR for the baseline allele effect.
butyrate_treatment_pvalue_alt
Overall butyrate-versus-vehicle treatment p-value for the alternate construct across the experiment's treatment series.
butyrate_treatment_pvalue_ref
Overall butyrate-versus-vehicle treatment p-value for the reference construct across the experiment's treatment series.
butyrate_treatment_fdr_alt
FDR for the overall butyrate treatment effect on the alternate construct.
butyrate_treatment_fdr_ref
FDR for the overall butyrate treatment effect on the reference construct.
butyrate_6h_treatment_logfc_alt
Butyrate-versus-vehicle treatment logFC for the alternate construct at 6 h.
butyrate_6h_treatment_logfc_ref
Butyrate-versus-vehicle treatment logFC for the reference construct at 6 h.
butyrate_6h_treatment_se_alt
Standard error of the 6-h butyrate treatment logFC for the alternate construct.
butyrate_6h_treatment_se_ref
Standard error of the 6-h butyrate treatment logFC for the reference construct.
butyrate_6h_treatment_pvalue_alt
P-value for the 6-h butyrate treatment effect on the alternate construct.
butyrate_6h_treatment_pvalue_ref
P-value for the 6-h butyrate treatment effect on the reference construct.
butyrate_6h_treatment_fdr_alt
FDR for the 6-h butyrate treatment effect on the alternate construct.
butyrate_6h_treatment_fdr_ref
FDR for the 6-h butyrate treatment effect on the reference construct.
butyrate_12h_treatment_logfc_alt
Butyrate-versus-vehicle treatment logFC for the alternate construct at 12 h.
butyrate_12h_treatment_logfc_ref
Butyrate-versus-vehicle treatment logFC for the reference construct at 12 h.
butyrate_12h_treatment_se_alt
Standard error of the 12-h butyrate treatment logFC for the alternate construct.
butyrate_12h_treatment_se_ref
Standard error of the 12-h butyrate treatment logFC for the reference construct.
butyrate_12h_treatment_pvalue_alt
P-value for the 12-h butyrate treatment effect on the alternate construct.
butyrate_12h_treatment_pvalue_ref
P-value for the 12-h butyrate treatment effect on the reference construct.
butyrate_12h_treatment_fdr_alt
FDR for the 12-h butyrate treatment effect on the alternate construct.
butyrate_12h_treatment_fdr_ref
FDR for the 12-h butyrate treatment effect on the reference construct.
butyrate_24h_treatment_logfc_alt
Butyrate-versus-vehicle treatment logFC for the alternate construct at 24 h.
butyrate_24h_treatment_logfc_ref
Butyrate-versus-vehicle treatment logFC for the reference construct at 24 h.
butyrate_24h_treatment_se_alt
Standard error of the 24-h butyrate treatment logFC for the alternate construct.
butyrate_24h_treatment_se_ref
Standard error of the 24-h butyrate treatment logFC for the reference construct.
butyrate_24h_treatment_pvalue_alt
P-value for the 24-h butyrate treatment effect on the alternate construct.
butyrate_24h_treatment_pvalue_ref
P-value for the 24-h butyrate treatment effect on the reference construct.
butyrate_24h_treatment_fdr_alt
FDR for the 24-h butyrate treatment effect on the alternate construct.
butyrate_24h_treatment_fdr_ref
FDR for the 24-h butyrate treatment effect on the reference construct.
dca_treatment_pvalue_alt
Overall DCA-versus-vehicle treatment p-value for the alternate construct across the experiment's treatment series.
dca_treatment_pvalue_ref
Overall DCA-versus-vehicle treatment p-value for the reference construct across the experiment's treatment series.
dca_treatment_fdr_alt
FDR for the overall DCA treatment effect on the alternate construct.
dca_treatment_fdr_ref
FDR for the overall DCA treatment effect on the reference construct.
dca_12h_treatment_logfc_alt
DCA-versus-vehicle treatment logFC for the alternate construct at 12 h.
dca_12h_treatment_logfc_ref
DCA-versus-vehicle treatment logFC for the reference construct at 12 h.
dca_12h_treatment_se_alt
Standard error of the 12-h DCA treatment logFC for the alternate construct.
dca_12h_treatment_se_ref
Standard error of the 12-h DCA treatment logFC for the reference construct.
dca_12h_treatment_pvalue_alt
P-value for the 12-h DCA treatment effect on the alternate construct.
dca_12h_treatment_pvalue_ref
P-value for the 12-h DCA treatment effect on the reference construct.
dca_12h_treatment_fdr_alt
FDR for the 12-h DCA treatment effect on the alternate construct.
dca_12h_treatment_fdr_ref
FDR for the 12-h DCA treatment effect on the reference construct.
dca_24h_treatment_logfc_alt
DCA-versus-vehicle treatment logFC for the alternate construct at 24 h.
dca_24h_treatment_logfc_ref
DCA-versus-vehicle treatment logFC for the reference construct at 24 h.
dca_24h_treatment_se_alt
Standard error of the 24-h DCA treatment logFC for the alternate construct.
dca_24h_treatment_se_ref
Standard error of the 24-h DCA treatment logFC for the reference construct.
dca_24h_treatment_pvalue_alt
P-value for the 24-h DCA treatment effect on the alternate construct.
dca_24h_treatment_pvalue_ref
P-value for the 24-h DCA treatment effect on the reference construct.
dca_24h_treatment_fdr_alt
FDR for the 24-h DCA treatment effect on the alternate construct.
dca_24h_treatment_fdr_ref
FDR for the 24-h DCA treatment effect on the reference construct.
dca_48h_treatment_logfc_alt
DCA-versus-vehicle treatment logFC for the alternate construct at 48 h.
dca_48h_treatment_logfc_ref
DCA-versus-vehicle treatment logFC for the reference construct at 48 h.
dca_48h_treatment_se_alt
Standard error of the 48-h DCA treatment logFC for the alternate construct.
dca_48h_treatment_se_ref
Standard error of the 48-h DCA treatment logFC for the reference construct.
dca_48h_treatment_pvalue_alt
P-value for the 48-h DCA treatment effect on the alternate construct.
dca_48h_treatment_pvalue_ref
P-value for the 48-h DCA treatment effect on the reference construct.
dca_48h_treatment_fdr_alt
FDR for the 48-h DCA treatment effect on the alternate construct.
dca_48h_treatment_fdr_ref
FDR for the 48-h DCA treatment effect on the reference construct.
butyrate_allele_interaction_pvalue
Overall p-value for the butyrate × allele interaction, i.e. change in the alternate-versus-reference effect under butyrate.
butyrate_allele_interaction_fdr
FDR for the overall butyrate × allele interaction.
butyrate_6h_allele_interaction_logfc_alt_vs_ref
Change in the alternate-versus-reference activity effect under butyrate at 6 h (interaction logFC).
butyrate_6h_allele_interaction_se
Standard error of the 6-h butyrate × allele interaction logFC.
butyrate_6h_allele_interaction_pvalue
P-value for the 6-h butyrate × allele interaction.
butyrate_6h_allele_interaction_fdr
FDR for the 6-h butyrate × allele interaction.
butyrate_12h_allele_interaction_logfc_alt_vs_ref
Change in the alternate-versus-reference activity effect under butyrate at 12 h (interaction logFC).
butyrate_12h_allele_interaction_se
Standard error of the 12-h butyrate × allele interaction logFC.
butyrate_12h_allele_interaction_pvalue
P-value for the 12-h butyrate × allele interaction.
butyrate_12h_allele_interaction_fdr
FDR for the 12-h butyrate × allele interaction.
butyrate_24h_allele_interaction_logfc_alt_vs_ref
Change in the alternate-versus-reference activity effect under butyrate at 24 h (interaction logFC).
butyrate_24h_allele_interaction_se
Standard error of the 24-h butyrate × allele interaction logFC.
butyrate_24h_allele_interaction_pvalue
P-value for the 24-h butyrate × allele interaction.
butyrate_24h_allele_interaction_fdr
FDR for the 24-h butyrate × allele interaction.
dca_allele_interaction_pvalue
Overall p-value for the DCA × allele interaction, i.e. change in the alternate-versus-reference effect under DCA.
dca_allele_interaction_fdr
FDR for the overall DCA × allele interaction.
dca_12h_allele_interaction_logfc_alt_vs_ref
Change in the alternate-versus-reference activity effect under DCA at 12 h (interaction logFC).
dca_12h_allele_interaction_se
Standard error of the 12-h DCA × allele interaction logFC.
dca_12h_allele_interaction_pvalue
P-value for the 12-h DCA × allele interaction.
dca_12h_allele_interaction_fdr
FDR for the 12-h DCA × allele interaction.
dca_24h_allele_interaction_logfc_alt_vs_ref
Change in the alternate-versus-reference activity effect under DCA at 24 h (interaction logFC).
dca_24h_allele_interaction_se
Standard error of the 24-h DCA × allele interaction logFC.
dca_24h_allele_interaction_pvalue
P-value for the 24-h DCA × allele interaction.
dca_24h_allele_interaction_fdr
FDR for the 24-h DCA × allele interaction.
dca_48h_allele_interaction_logfc_alt_vs_ref
Change in the alternate-versus-reference activity effect under DCA at 48 h (interaction logFC).
dca_48h_allele_interaction_se
Standard error of the 48-h DCA × allele interaction logFC.
dca_48h_allele_interaction_pvalue
P-value for the 48-h DCA × allele interaction.
dca_48h_allele_interaction_fdr
FDR for the 48-h DCA × allele interaction.

Quality control

Study QC included barcode/UMI extraction, Bowtie mapping of barcodes, UMI-tools PCR-duplicate removal, DNA-normalized fragment-level MPRAnalyze likelihood-ratio tests, and a replicate random-effects term. The released S4 result rows were retained only when the variant ID, S3 annotation join, and result row were valid; 1,428 of 1,428 released rows passed these package-level checks and no rows were removed. Numeric NA values are represented as blank cells in the processed CSV.

Curation notes

Supplementary Data S4 contains 1,428 final primary-colon result rows, fewer than the 1,595 variants described for the library design; omitted variants were not imputed. S3 records duplicated across multiple GWAS index SNPs were collapsed into semicolon-separated unique annotation values. The methods contain unspecified placeholders ('X days') for the duration of primary-cell transduction and puromycin selection. Overall treatment/interaction columns contain p-values and FDRs, while timepoint columns contain logFC, standard error, p-value, and FDR.

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