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🧬 Proteomics/Omics · Method

Transcriptomics (RNA-seq)

Sequence whole-transcriptome expression
🎯 Difficulty ★★★ Advanced Duration About 3–5 days 🎯 Use Analyze gene expression profiles, differential expression, alternative splicing and novel transcripts
📖 Principle
Extract RNA, build cDNA library and sequence, align to reference genome to quantify transcript expression
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📋 Workflow

Full workflow, products add-to-cart directly
1

RNA extraction and QC

2 h
Extract high-quality total RNA, check concentration, purity and integrity (RIN)
💡 Tip RIN ≥7 usually acceptable for sequencing
⚠️ Caution RNase degradation affects results
🧪 Materials for this step (click to shop by spec/brand)
2

Library construction

1 day
Deplete rRNA or enrich mRNA, reverse-transcribe to cDNA, ligate adapters and amplify
💡 Tip Choose ribodepletion per species
⚠️ Caution Control cycles to avoid PCR bias
🧪 Materials for this step (click to shop by spec/brand)
3

Sequencing

1–3 days
Quantify, pool libraries and sequence on high-throughput sequencer
💡 Tip Read depth per sample count
⚠️ Caution Pool evenly for uniformity
🧪 Materials for this step (click to shop by spec/brand)
4

Data analysis

2 days
QC, align, quantify and perform differential expression and enrichment analysis
💡 Tip Multiple-testing correction prevents false positives
⚠️ Caution Correct batch effects
🧪 Materials for this step (click to shop by spec/brand)

⚠️ 5 Common Beginner Mistakes

  • RNA degradation lowers RIN
  • High rRNA residual wastes sequencing
  • Excess PCR introduces expression bias
  • Batch effects mask true differences
  • Low depth misses lowly-expressed genes

❓ FAQ

+How to set RNA-seq depth?
Depends on goal; deeper for low-expression or novel transcripts (20-50M/sample).
+Ribodepletion vs poly-A enrichment?
poly-A enriches mRNA standard; ribodepletion retains ncRNA more comprehensively.
+How to correct batch effects?
Balance batches in design and correct with methods like ComBat.

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Data authenticity: Product categories from JW Supply Chain standard taxonomy; method→step→product connected. Last updated: 2026-08-23 · v3.0