Myeloid-derived suppressor cells are implicated in regulating permissiveness for tumor metastasis during mouse gestation
- 1Division of Experimental Pathology, Institute of Pathology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland.
- 0Division of Experimental Pathology, Institute of Pathology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland.
Related Experiment Videos
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
View abstract on PubMed
Summary
This summary is machine-generated.Pregnancy enhances tumor metastasis in mice by suppressing natural killer (NK) cell activity. This immune suppression is linked to myeloid-derived suppressor cells (MDSCs), suggesting a shared mechanism between pregnancy and tumor growth.
Area Of Science
- Oncology
- Immunology
- Reproductive Biology
Background
- Metastasis requires tumor cells to adapt to new tissues.
- Factors enabling metastatic growth remain unclear.
- Pregnancy-associated breast cancers show early metastasis, suggesting pregnancy influences tumor spread.
Purpose Of The Study
- Investigate if pregnancy enhances tumor metastasis.
- Identify mechanisms behind pregnancy-enhanced metastasis.
- Explore the role of immune cells in this process.
Main Methods
- Studied metastasis in pregnant and non-pregnant mice across different tumor types.
- Assessed natural killer (NK) cell activity.
- Analyzed gene expression in lung and liver tissues.
- Quantified myeloid-derived suppressor cells (MDSCs) during gestation.
Main Results
- Metastasis was significantly enhanced in pregnant mice, irrespective of tumor type.
- Decreased NK cell activity correlated with increased metastasis.
- Gene expression changes indicated myeloid cell infiltration in pregnant mice.
- MDSCs accumulated during pregnancy and suppressed NK cell function.
Conclusions
- Pregnancy creates a permissive environment for enhanced tumor metastasis in mice.
- Reduced NK cell activity, mediated by MDSCs, is a key mechanism.
- MDSCs may represent a shared immune suppression pathway in pregnancy and cancer.
Related Experiment Videos
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.