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Load when estimating cell-type proportions in bulk RNA-seq samples from a single-cell or signature-matrix reference. Skip if the data is already single-cell (no deconvolution needed) or for spatial deconvolution (use spatial-deconv).
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| name | bulkrna-deconvolution |
| description | Load when estimating cell-type proportions in bulk RNA-seq samples from a single-cell or signature-matrix reference. Skip if the data is already single-cell (no deconvolution needed) or for spatial deconvolution (use spatial-deconv). |
| version | 0.3.0 |
| author | OmicsClaw |
| license | MIT |
| tags | ["bulkrna","deconvolution","NNLS","cell-type-proportion"] |
Run on a bulk RNA-seq cohort when you have a reference (single-cell profile or signature matrix) and want per-sample cell-type proportions. Built-in NNLS solver is the only backend currently implemented; the wrapper does not call CIBERSORTx or MuSiC.
| Input | Format | Required |
|---|---|---|
| Bulk count matrix | .csv (gene × sample) | yes (or --demo) |
| Reference | --reference CSV (signature matrix) or .h5ad (sc reference) | yes (or --demo) |
| Output | Path | Notes |
|---|---|---|
| Proportions | tables/proportions.csv | sample × cell_type, rows sum to 1 |
| Dominant types | tables/dominant_types.csv | per-sample top cell type |
| Stacked-bar plot | figures/proportions_stacked.png | per-sample composition |
| Heatmap | figures/proportions_heatmap.png | sample × cell_type intensity |
| Report | report.md + result.json | always |
bulkrna_deconvolution.py:368 raises ValueError if --input missing without --demo).:370 raises ValueError if --reference missing without --demo; :76 raises FileNotFoundError if path doesn't exist).:131 raises ValueError if no overlap).scipy.optimize.nnls per sample to estimate per-cell-type weights, then row-normalise to proportions.tables/proportions.csv + tables/dominant_types.csv.--reference is REQUIRED for non-demo runs. Unlike most bulkrna skills, this one needs two inputs. bulkrna_deconvolution.py:370 raises with "--reference is required when not using --demo" if you forget; no silent fallback.:131 raises ValueError when bulk and reference share zero gene IDs (typical cause: bulk uses Ensembl, reference uses HGNC symbols). Pre-run bulkrna-geneid-mapping to harmonise.--method flag. Despite the skill catalog historically advertising CIBERSORTx and MuSiC bridges, the script (bulkrna_deconvolution.py:347-358 argparser) accepts only --input, --output, --demo, --reference. The summary dict (:163-172) records n_genes_shared, n_samples, n_cell_types, cell_types, proportions_df, dominant_types, mean_proportions, residuals — no method field, because there is no choice.residuals (saved in result.json["residuals"]) measure how well the linear combination explains the bulk profile. Sanity-check that residuals are small relative to library size; large residuals indicate the reference is missing a major cell type from the bulk.python omicsclaw.py run bulkrna-deconvolution --demo
python omicsclaw.py run bulkrna-deconvolution \
--input counts.csv --reference signature.csv --output results/
python omicsclaw.py run bulkrna-deconvolution \
--input counts.csv --reference scref.h5ad --output results/
references/parameters.md — every CLI flag and tuning hintreferences/methodology.md — NNLS solver, gene-overlap requirement, residual interpretationreferences/output_contract.md — exact output directory layoutbulkrna-geneid-mapping (run upstream to harmonise gene IDs), bulkrna-trajblend (parallel: per-sample pseudotime placement using the same NNLS proportions plus nearest-neighbour mapping), spatial-deconv (spatial-side sibling: spot-level proportions with multiple methods)