Lysyl oxidase-like 3 restrains mitochondrial ferroptosis to promote liver cancer chemoresistance by stabilizing dihydroorotate dehydrogenase

© 2023. The Author(s)..

To overcome chemotherapy resistance, novel strategies sensitizing cancer cells to chemotherapy are required. Here, we screen the lysyl-oxidase (LOX) family to clarify its contribution to chemotherapy resistance in liver cancer. LOXL3 depletion significantly sensitizes liver cancer cells to Oxaliplatin by inducing ferroptosis. Chemotherapy-activated EGFR signaling drives LOXL3 to interact with TOM20, causing it to be hijacked into mitochondria, where LOXL3 lysyl-oxidase activity is reinforced by phosphorylation at S704. Metabolic adenylate kinase 2 (AK2) directly phosphorylates LOXL3-S704. Phosphorylated LOXL3-S704 targets dihydroorotate dehydrogenase (DHODH) and stabilizes it by preventing its ubiquitin-mediated proteasomal degradation. K344-deubiquitinated DHODH accumulates in mitochondria, in turn inhibiting chemotherapy-induced mitochondrial ferroptosis. CRISPR-Cas9-mediated site-mutation of mouse LOXL3-S704 to D704 causes a reduction in lipid peroxidation. Using an advanced liver cancer mouse model, we further reveal that low-dose Oxaliplatin in combination with the DHODH-inhibitor Leflunomide effectively inhibit liver cancer progression by inducing ferroptosis, with increased chemotherapy sensitivity and decreased chemotherapy toxicity.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:14

Enthalten in:

Nature communications - 14(2023), 1 vom: 30. Mai, Seite 3123

Sprache:

Englisch

Beteiligte Personen:

Zhan, Meixiao [VerfasserIn]
Ding, Yufeng [VerfasserIn]
Huang, Shanzhou [VerfasserIn]
Liu, Yuhang [VerfasserIn]
Xiao, Jing [VerfasserIn]
Yu, Hua [VerfasserIn]
Lu, Ligong [VerfasserIn]
Wang, Xiongjun [VerfasserIn]

Links:

Volltext

Themen:

04ZR38536J
Amino Acid Oxidoreductases
Dihydroorotate Dehydrogenase
EC 1.4.-
EC 1.4.3.-
EC 1.4.3.13
Journal Article
LOXL3 protein, mouse
Oxaliplatin
Protein-Lysine 6-Oxidase
Research Support, Non-U.S. Gov't

Anmerkungen:

Date Completed 02.06.2023

Date Revised 12.06.2023

published: Electronic

Citation Status MEDLINE

doi:

10.1038/s41467-023-38753-6

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM35755860X