TEX264 drives selective autophagy of DNA lesions to promote DNA repair and cell survival

Pauline Lascaux, Gwendoline Hoslett, Sara Tribble, Camilla Trugenberger, Ivan Antičević, Cecile Otten, Ignacio Torrecilla, Stelios Koukouravas, Yichen Zhao, Hongbin Yang, Ftoon Aljarbou, Annamaria Ruggiano, Wei Song, Cristiano Peron, Giulio Deangeli, Enric Domingo, James Bancroft, Loïc Carrique, Errin Johnson, Iolanda VendrellRoman Fischer, Alvin Wei Tian Ng, Joanne Ngeow, Vincenzo D'Angiolella, Nuno Raimundo, Tim Maughan, Marta Popović, Ira Milošević, Kristijan Ramadan

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

DNA repair and autophagy are distinct biological processes vital for cell survival. Although autophagy helps maintain genome stability, there is no evidence of its direct role in the repair of DNA lesions. We discovered that lysosomes process topoisomerase 1 cleavage complexes (TOP1cc) DNA lesions in vertebrates. Selective degradation of TOP1cc by autophagy directs DNA damage repair and cell survival at clinically relevant doses of topoisomerase 1 inhibitors. TOP1cc are exported from the nucleus to lysosomes through a transient alteration of the nuclear envelope and independent of the proteasome. Mechanistically, the autophagy receptor TEX264 acts as a TOP1cc sensor at DNA replication forks, triggering TOP1cc processing by the p97 ATPase and mediating the delivery of TOP1cc to lysosomes in an MRE11-nuclease- and ATR-kinase-dependent manner. We found an evolutionarily conserved role for selective autophagy in DNA repair that enables cell survival, protects genome stability, and is clinically relevant for colorectal cancer patients.

Original languageEnglish (US)
Pages (from-to)5698-5718.e26
JournalCell
Volume187
Issue number20
DOIs
StatePublished - Oct 3 2024

All Science Journal Classification (ASJC) codes

  • General Biochemistry, Genetics and Molecular Biology

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