New nanoplatform blocks tumor cells from expelling damaged mitochondria—cutting breast cancer metastasis.
Mitocytosis expels damaged mitochondria via migrasomes, conferring resistance to mitochondria-targeted therapy. Researchers developed RH-NPs dual nanoplatform: TL/RH-NPs damage tumor mitochondria; CGT/RH-NPs block mitocytosis by inhibiting integrin signaling when cells attempt mitochondrial…
New nanoplatform blocks tumor cells from expelling damaged mitochondria—cutting breast cancer metastasis.
Mitocytosis expels damaged mitochondria via migrasomes, conferring resistance to mitochondria-targeted therapy. Researchers developed RH-NPs dual nanoplatform: TL/RH-NPs damage tumor mitochondria; CGT/RH-NPs block mitocytosis by inhibiting integrin signaling when cells attempt mitochondrial expulsion. In 4T1 (high-migrasome) breast tumor models, the combination significantly enhanced anti-metastatic efficacy.
Key Findings
- Mitocytosis confers resistance to mitochondria-targeted therapy in high-migrasome tumors
- RH-NPs dual platform: TL/RH-NPs damage mitochondria; CGT/RH-NPs block mitocytosis
- CGT/RH-NPs hitchhike with damaged mitochondria into migrasomes to block expulsion
- Combination significantly enhanced anti-metastatic efficacy in 4T1 breast tumor models
- Establishes mitocytosis inhibition as a new therapeutic target
Implications
Targeting mitocytosis represents a novel approach to overcoming resistance in breast cancer. Strategy applicable to other cancers with high migrasome expression.
Caveats
Preclinical mouse model; abstract-only. Safety profiles of individual nanoparticle components need characterization. Manufacturing complexity adds translational challenges.
Source: Science advances — 2026-04-10