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NK cells control breast cancer and related cancer stem cell hematological spread
Rossana Tallerico1, Laura Conti2, Stefania Lanzardo2
1Tumor Immunology and Immunopathology Laboratory, Department of Experimental and Clinical Medicine, University Magna Graecia of Catanzaro , Catanzaro, Italy.
Abstract:
The growth and recurrence of a number of cancers is driven by a scarce population of cancer stem cells (CSCs), which are resistant to most current therapies. It has been shown previously that natural killer (NK) cells recognize human glioma, melanoma, colon and prostate CSCs in vitro. We herein show that human and mouse breast CSCs are also susceptible to NK cytotoxic activity in vitro. Moreover, CSC induced autologous NK cell activation and expansion in vivo, which correlate with the inhibition of CSC metastatic spread. These data suggest that NK cells control CSC metastatic spread in vivo and that their use in breast cancer therapy may well be fruitful.
Insights
Natural killer (NK) cells target cancer stem cells (CSCs) in breast cancer. These immune cells activate and expand within the body, inhibiting CSC spread and suggesting potential therapeutic benefits for NK cell therapy.
Area of Science:
- Immunology
- Oncology
- Cancer Stem Cell Biology
Background:
- Cancer stem cells (CSCs) drive tumor growth and recurrence.
- CSCs exhibit resistance to conventional cancer therapies.
- Natural killer (NK) cells have previously shown potential against various CSCs in vitro.
Purpose of the Study:
- To investigate the susceptibility of breast CSCs to NK cell cytotoxicity.
- To evaluate the in vivo effects of CSCs on NK cell activation and expansion.
- To determine the role of NK cells in controlling CSC metastatic spread.
Main Methods:
- In vitro assessment of NK cell-mediated cytotoxicity against human and mouse breast CSCs.
- In vivo analysis of NK cell activation and expansion induced by CSCs.
- Correlation of NK cell activity with CSC metastatic spread.
Main Results:
- Human and mouse breast CSCs are susceptible to NK cell cytotoxic activity in vitro.
- CSCs induce autologous NK cell activation and expansion in vivo.
- NK cell activation and expansion in vivo correlate with inhibited CSC metastatic spread.
Conclusions:
- NK cells effectively control the metastatic spread of breast CSCs in vivo.
- NK cells represent a promising therapeutic strategy for breast cancer treatment.