6533b82ffe1ef96bd1295bf8
RESEARCH PRODUCT
Compromised nuclear envelope integrity drives TREX1-dependent DNA damage and tumor cell invasion
Philippe ChavrierMathieu MaurinMabel San RomanClaudio TripodoClotilde CadartCatherine VillardNicolas ManelGiorgio ScitaMatteo GentiliJérôme GalonSonia Agüera-gonzalezRodrigo Nalio RamosCatalina LodillinskyAyako YamadaAndrea PalamidessiFiona RoutetAlice WilliartMatthieu GratiaEmilie LagoutteValeria CancilaGuilherme Pedreira De Freitas NaderJean-louis ViovyMatthieu Pielsubject
SenescenceExonucleaseDNA damageNuclear Envelope[SDV]Life Sciences [q-bio]Breast NeoplasmsBiologySettore MED/08 - Anatomia PatologicaGeneral Biochemistry Genetics and Molecular BiologyCell LineMicemedicineSettore MED/05 - Patologia ClinicaAnimalsHumansNeoplasm InvasivenessEpithelial–mesenchymal transitionCellular SenescenceEndoplasmic reticulumPhosphoproteinsXenograft Model Antitumor AssaysCell biology[SDV] Life Sciences [q-bio]medicine.anatomical_structureExodeoxyribonucleasesCancer cellProteolysisbiology.proteinTREX1 nuclear envelope rupture DNA damage mammary duct carcinoma tumor invasion senescence breast cancer cGAS confinement epithelial to mesenchymal transition Animals Breast Neoplasms Cell Line Cellular Senescence Collagen Disease Progression Exodeoxyribonucleases Female Humans Mice Neoplasm InvasivenessNuclear Envelope PhosphoproteinsProteolysis Xenograft Model Antitumor Assays DNA DamageDisease ProgressionFemaleCollagenNucleusExtracellular Matrix DegradationDNA Damagedescription
Although mutations leading to a compromised nuclear envelope cause diseases such as muscular dystrophies or accelerated aging, the consequences of mechanically induced nuclear envelope ruptures are less known. Here, we show that nuclear envelope ruptures induce DNA damage that promotes senescence in non-transformed cells and induces an invasive phenotype in human breast cancer cells. We find that the endoplasmic reticulum (ER)-associated exonuclease TREX1 translocates into the nucleus after nuclear envelope rupture and is required to induce DNA damage. Inside the mammary duct, cellular crowding leads to nuclear envelope ruptures that generate TREX1-dependent DNA damage, thereby driving the progression of in situ carcinoma to the invasive stage. DNA damage and nuclear envelope rupture markers were also enriched at the invasive edge of human tumors. We propose that DNA damage in mechanically challenged nuclei could affect the pathophysiology of crowded tissues by modulating proliferation and extracellular matrix degradation of normal and transformed cells.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-09-01 |