Precision targeting of CuET overload to disrupt mitochondrial unfolded protein response by integrated liposome
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View abstract on PubMed
Summary
This summary is machine-generated.Targeting breast cancer mitochondria with CTPP-Lipid@CuET delivers copper ions, overloading mitochondria and inducing cancer cell death. This approach overcomes resistance from the mitochondrial unfolded protein response (UPR<sup>mt</sup>) for improved cancer therapy.
Area Of Science
- Biomedical Engineering
- Cancer Therapeutics
- Mitochondrial Biology
Background
- Mitochondria are crucial for breast cancer cell survival and adaptation.
- Targeting mitochondria is a promising breast cancer therapy strategy.
- Mitochondrial unfolded protein response (UPR<sup>mt</sup>) can limit therapeutic efficacy.
Purpose Of The Study
- To develop a novel mitochondrial-targeting liposome agent (CTPP-Lipid) for delivering copper ions (CuET-DSF).
- To investigate the efficacy of Cu<sup>2+</sup> overloading in mitochondria-abundant breast tumors.
- To overcome adaptive UPR<sup>mt</sup> to enhance breast cancer treatment outcomes.
Main Methods
- Construction of mitochondrial targeting liposome agents (CTPP-Lipid).
- Delivery of copper ions (CuET-DSF) using CTPP-Lipid@CuET.
- Assessment of ROS production, mitochondrial structure disruption, and apoptosis induction in breast cancer cells.
Main Results
- CTPP-Lipid@CuET successfully achieved targeted Cu<sup>2+</sup> overloading in mitochondria.
- This overloading rapidly increased reactive oxygen species (ROS) production and disrupted mitochondrial structure.
- The treatment effectively induced apoptosis in breast cancer cells, avoiding adaptive UPR<sup>mt</sup> formation.
Conclusions
- Mitochondrial Cu<sup>2+</sup> overloading via CTPP-Lipid@CuET is a viable antitumor strategy.
- This approach demonstrates potential for overcoming therapeutic resistance in breast tumors.
- The findings offer new insights into targeted breast cancer therapy.
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