Concurrent L1 retrotransposition events promote reciprocal translocations in human tumorigenesis
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Full article and list of author affiliations: https://doi.org/10.1126/ science.aee4513 Sonia Zumalave et al. INTRODUCTION: LINE-1 (L1) retrotransposons are abundant repetitive elements that make up ~17% of the human reference genome. These sequences behave as intragenomic parasites, propagating through a “copy-and-paste” mechanism known as retrotransposition. In this process, an active L1 locus is transcribed into an RNA intermediate, which is then reverse-transcribed and inserted at a new genomic site. Although most L1 copies are inactive, a handful of loci generate new insertions. Such mobilization can disrupt genome integrity, promote insertional mutagenesis, and occasionally contribute to human disease, including cancer. In certain tumors, somatic L1 activity becomes a prominent source of mutational burden. …
摘自《科学》(Science)第392卷 第6793期 · 2026年4月2日。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。