---
title: "Nonsense-mediated decay limits transposable element–driven transcript innovation"
id: "biorxiv-5-nonsense-mediated-decay-constrains-transposable-element-driven-evolutionary"
canonical_url: "https://medichelpline.com/clinical-feed/biorxiv-5-nonsense-mediated-decay-constrains-transposable-element-driven-evolutionary"
content_type: "clinical_feed_article"
specialty: "General"
source_name: "bioRxiv (Biomedical Preprints)"
source_url: "https://www.biorxiv.org/content/10.64898/2026.10.22.760879v1?rss=1"
published_at: "2026-10-23T12:00:00.000Z"
evidence_level: "Verified Feed"
license: "CC-BY-NC-4.0 / Informational Use"
---
# Nonsense-mediated decay limits transposable element–driven transcript innovation
## Provenance & Clinical Metadata
- **Canonical URL:** https://medichelpline.com/clinical-feed/biorxiv-5-nonsense-mediated-decay-constrains-transposable-element-driven-evolutionary
- **Specialty:** [General](https://medichelpline.com/clinical-feed/general.md)
- **Primary Source:** bioRxiv (Biomedical Preprints)
- **Source URL:** [Original Journal Publication](https://www.biorxiv.org/content/10.64898/2026.10.22.760879v1?rss=1)
- **Published At:** 2026-10-23T12:00:00.000Z
- **Evidence Rating:** Verified Feed
## Executive GIST (TL;DR)
- Investigators assembled an NMD-extended transcriptome of roughly 217,000 transcripts from long-read RNA sequencing after NMD inhibition; about 80% of these transcripts were unannotated. - The study team observed that transcripts regulated by **NMD** were enriched for exonization of **transposable elements** (TEs), especially long terminal repeat (LTR) and LINE integrations, often appearing as alternative isoforms of annotated genes. - Comparative genomics indicated that TEs subject to NMD repression were evolutionarily younger, more diverged, and carried splice sites that were younger and less conserved than those in stably expressed transcripts. - Data indicated NMD-silenced TEs more frequently encoded protein isoforms with distinct functional properties compared with TEs not regulated by NMD or those in stable transcripts. - The investigators reported elevated NMD activity in lung cancer overall and an association between higher NMD activity and improved survival in lung squamous cell carcinoma. - The authors showed that primate-specific **Alu**-exonizing isoforms of **DDX49**, **NEIL3** and **SETDB1** escaped NMD to produce stable proteins with distinct biological effects. - The source did not report detailed experimental parameters such as exact inhibition methods, concentration/timecourse, or full cohort demographics in the abstract; those methodological specifics were not provided in the text available here. - Overall, the authors concluded that **NMD** buffers TE-driven transcriptomic innovation by constraining the reservoir of evolutionary novelty arising from TE exonization.
## Clinical Analysis & Structured Key Points
Nonsense-mediated decay constrains transposable element-driven evolutionary innovation | bioRxiv Skip to main content New Results Nonsense-mediated decay constrains transposable element-driven evolutionary innovation Tobias Plowman , George Kassiotis doi: https://doi.org/10.64898/2026.10.22.760879 Tobias Plowman The Francis Crick Institute Find this author on Google Scholar Find this author on PubMed Search for this author on this site George Kassiotis The Francis Crick Institute Find this author on Google Scholar Find this author on PubMed Search for this author on this site For correspondence: george.kassiotis{at}crick.ac.uk Abstract Info/History Metrics Supplementary material Preview PDF Abstract Nonsense-mediated decay (NMD) degrades transcripts carrying premature termination codons, but its role in controlling transposable element-derived transcript diversity is unclear. We assembled an NMD-extended transcriptome (~217,000 transcripts, ~80% unannotated) from long-read RNA sequencing of cell lines after NMD inhibition. NMD-regulated transcripts were enriched in TE exonization, particularly of long terminal repeat (LTR) and long interspersed nuclear element (LINE) integrations, largely as alternative isoforms of annotated genes. Comparative genomics showed that NMD-silenced TEs were evolutionarily younger, more diverged, contained younger, less conserved splice sites, and more often encoded functionally distinct protein isoforms compared to TEs tuned by NMD or in stably expressed transcripts. NMD activity was elevated in lung cancer and associated with improved survival in lung squamous cell carcinoma. We further show that NMD-regulated primate-specific Alu-exonizing isoforms of DDX49, NEIL3 and SETDB1 produced stable proteins with distinct biological activity effects. NMD, thus, buffers TE-driven transcriptomic innovation, controlling the reservoir of evolutionary novelty. Competing Interest Statement G.K. is a scientific co-founder of EnaraBio and a member of its scientific advisory board. G.K. has consulted for EnaraBio, Repertoire Immune Medicines, ErVimmune and AdBio Partners. T.P. declares no competing interests. Copyright The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC 4.0 International license . Back to top Previous Next Posted October 23, 2026. Download PDF Supplementary Material Email Thank you for your interest in spreading the word about bioRxiv. NOTE: Your email address is requested solely to identify you as the sender of this article. Your Email * Your Name * Send To * Enter multiple addresses on separate lines or separate them with commas. You are going to email the following Nonsense-mediated decay constrains transposable element-driven evolutionary innovation Message Subject (Your Name) has forwarded a page to you from bioRxiv Message Body (Your Name) thought you would like to see this page from the bioRxiv website. Your Personal Message CAPTCHA This question is for testing whether or not you are a human visitor and to prevent automated spam submissions. Share Nonsense-mediated decay constrains transposable element-driven evolutionary innovation Tobias Plowman , George Kassiotis bioRxiv 2026.10.22.760879; doi: https://doi.org/10.64898/2026.10.22.760879 Share This Article: Copy Citation Tools Nonsense-mediated decay constrains transposable element-driven evolutionary innovation Tobias Plowman , George Kassiotis bioRxiv 2026.10.22.760879; doi: https://doi.org/10.64898/2026.10.22.760879 Citation Manager Formats BibTeX Bookends EasyBib EndNote (tagged) EndNote 8 (xml) Medlars Mendeley Papers RefWorks Tagged Ref Manager RIS Zotero Tweet Widget Facebook Like Google Plus One Subject Areas All Articles Animal Behavior and Cognition (8164) Biochemistry (19027) Bioengineering (15171) Bioinformatics (45340) Biophysics (22958) Cancer Biology (20114) Cell Biology (27306) Clinical Trials (138) Developmental Biology (14144) Ecology (21399) Epidemiology (2067) Evolutionary Biology (25785) Genetics (16342) Genomics (23832) Immunology (19025) Microbiology (43194) Molecular Biology (18343) Neuroscience (95060) Paleontology (712) Pathology (3033) Pharmacology and Toxicology (5200) Physiology (8280) Plant Biology (16270) Scientific Communication and Education (2116) Synthetic Biology (4645) Systems Biology (10385) Zoology (2426)
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