Tumour-derived exosomes and microvesicles: a way for tumours to escape the immune system
Author Information
Author(s): Whiteside T L
Primary Institution: University of Pittsburgh Cancer Institute
Hypothesis
Are tumour-derived exosomes or microvesicles another mechanism of tumour escape from the host immune system?
Conclusion
Tumour-derived exosomes and microvesicles are shown to have identical protein profiles and similar immunoinhibitory activities, suggesting they play a significant role in immune regulation in cancer.
Supporting Evidence
- Exosomes and microvesicles have identical protein profiles and immunoinhibitory activities.
- MV/exosomes are involved in immune regulation in cancer.
- MV can induce apoptosis in activated immune cells.
Takeaway
Tumours can hide from the body's defenses by releasing tiny bubbles that confuse immune cells, making it harder for the body to fight cancer.
Methodology
The study compared exosomes and microvesicles isolated from ovarian carcinoma patients' specimens for their protein profiles and biological activity.
Limitations
It is not proven that tumours are the only or major source of these structures in body fluids, and variability in their biological activity may exist.
Participant Demographics
Women with ovarian carcinoma.
Digital Object Identifier (DOI)
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