Secretion of extracellular hsp90α via exosomes increases cancer cell motility: a role for plasminogen activation
2010

How hsp90α in Exosomes Helps Cancer Cells Move

publication Evidence: moderate

Author Information

Author(s): Jessica McCready, Jessica D Sims, Doug Chan, Daniel G Jay

Primary Institution: Tufts University

Hypothesis

Does extracellular hsp90α secreted via exosomes increase cancer cell motility by activating plasminogen?

Conclusion

The study shows that hsp90α released by cancer cells via exosomes activates plasmin, which increases cell motility.

Supporting Evidence

  • Hsp90α is secreted in exosomes from invasive cancer cells.
  • Exosomes containing hsp90α increase cancer cell migration.
  • Inhibition of hsp90α reduces cancer cell motility.
  • Hsp90α activates plasminogen to plasmin, enhancing cell movement.

Takeaway

Cancer cells can send out tiny bubbles called exosomes that help them move better, and one of the things in these bubbles helps turn on a protein that makes them move.

Methodology

The study involved analyzing cancer cell morphology and motility after treatment with exosomes and hsp90α, along with various assays to test plasmin activation.

Limitations

The study primarily focuses on specific cancer cell lines and may not generalize to all types of cancer.

Statistical Information

P-Value

p<0.01

Statistical Significance

p<0.001

Digital Object Identifier (DOI)

10.1186/1471-2407-10-294

Want to read the original?

Access the complete publication on the publisher's website

View Original Publication