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Published on: March 4, 2017
Precision medicine in breast cancer: Targeting molecular subtypes with gold nanoparticle-loaded liposomes
Marika Musielak1, Paweł Bakun2, Julia Liwarska3
1Department of Electroradiology, Poznan University of Medical Sciences, Poznan, Poland; Doctoral School, Poznan University of Medical Sciences, Poznan, Poland; Radiobiology Laboratory, Department of Medical Physics, Greater Poland Cancer Centre, Poznan, Poland.
Purpose:
Breast cancer is a complex disease with several molecular subtypes that respond differently to therapy. This paper describes liposomes loaded with gold nanoparticles as a targeted drug delivery method in the rapidly developing precision breast cancer treatment area. The aim was to investigate the cytotoxicity level and cellular uptake using several breast cancer cell lines and a normal breast cell line.
Materials And Methods:
We synthesized gold nanoparticles incorporated in liposomes. Nanostructures were incubated with breast cancer cell lines of different subtypes. The analysis included MTT assay, flow cytometry and immunofluorescence.
Results:
Cell viability varied among different cancer cells. Moreover, the time- and concentration-dependent manner of viability change was observed. The internalization of liposomes with gold nanoparticles and nanoparticles alone determined different results depending on molecular breast cancer subtypes. The luminal B and triple-negative breast cancer cells demonstrated the highest resistance and sensitivity, respectively. The intensity of cells' interaction with the proposed nanostructures was observed in both cell lines. In this study, we compare the molecular subtypes of breast cancer and discuss how this novel method might improve the therapy success.
Conclusions:
Our research sheds light on the possibility of new individualized treatments for breast cancer patients, opening the path for better results and a more detailed cancer therapy strategy.
Insights
Liposomes loaded with gold nanoparticles show varied cytotoxicity and cellular uptake in different breast cancer subtypes. This targeted drug delivery method offers potential for individualized breast cancer therapy strategies.
Area of Science:
- Nanotechnology
- Oncology
- Biomedical Engineering
Background:
- Breast cancer presents diverse molecular subtypes impacting therapeutic responses.
- Precision medicine necessitates advanced drug delivery systems for targeted treatment.
Purpose of the Study:
- To evaluate the cytotoxicity and cellular uptake of liposomes co-loaded with gold nanoparticles.
- To investigate the efficacy of this nanocarrier system across various breast cancer cell lines and a normal breast cell line.
Main Methods:
- Synthesis of gold nanoparticles encapsulated within liposomes.
- Incubation of nanostructures with distinct breast cancer cell lines (luminal B, triple-negative) and a normal cell line.
- Assessment of cellular responses using MTT assay, flow cytometry, and immunofluorescence.
Main Results:
- Differential cell viability observed across breast cancer subtypes, influenced by time and concentration.
- Varied cellular internalization of liposomes with gold nanoparticles and nanoparticles alone, dependent on molecular subtype.
- Luminal B cells exhibited higher resistance, while triple-negative cells showed greater sensitivity to the nanostructures.
Conclusions:
- The study highlights the potential of liposomes with gold nanoparticles for targeted breast cancer therapy.
- Results suggest a basis for developing individualized treatment strategies based on breast cancer molecular subtypes.
- This novel nanomedicine approach may enhance therapeutic outcomes and refine cancer treatment planning.
