Biotech

The Case of the Should-Be-Missing Proteins

Read full article at source ↗

Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 21/10/2026, 17:49:31 UTC.

Briefings

A systematic literature search identified 230 instances of proteins appearing in Western blots of cell lines with known genetic defects, primarily involving antibodies that are known to be non-specific or misapplied. The most notable anomaly was the persistent detection of STAT3 in PC-3 cells despite established biological knowledge to the contrary, suggesting systematic errors in antibody specificity or cell line identification. The author argues that while these errors do not advance science, they are a significant problem in the field that should be investigated.

Key points

• 230 instances of proteins appearing in Western blots of cell lines with known genetic deletions or mutations were found in 221 papers.
• STAT3 was detected in PC-3 cells despite being well-established not to be present in them, indicating systematic antibody or cell line identification errors.

Context

This preprint represents a one-man search for Western blot experiments in papers using cell lines with genetic deletions or mutations, highlighting systematic errors in antibody specificity and cell line identification that are well-known but often overlooked.

Limitations

The search was limited to 221 papers and focused on Western blot experiments in cell lines with genetic defects; it does not cover all potential sources of protein misidentification or other systematic errors in the field.

Generated by Bittrees-hosted qwen35-2b sha256:aaf42c8b7c3c on 21/10/2026, 20:13:29 UTC. Based on publisher-provided feed evidence; may not cover the full original article. Check the source for details.

View archived briefing on IPFS
bafybeideqgn3byesllrqaxjh5klm34gnlnbsbc4f3v4dw5ddzou6dgos4e