Revisiting the biological roles of PAI2 (SERPINB2) in cancer.

Abstract

Tumour expression of the urokinase plasminogen activator correlates with invasive capacity. Consequently, inhibition of this serine protease by physiological inhibitors should decrease invasion and metastasis. However, of the two main urokinase inhibitors, high tumour levels of the type 1 inhibitor actually promote tumour progression, whereas high levels of the type 2 inhibitor decrease tumour growth and metastasis. We propose that the basis of this apparently paradoxical action of two similar serine protease inhibitors lies in key structural differences controlling interactions with components of the extracellular matrix and endocytosis-signalling co-receptors.

• Authors: David R Croucher, Darren N Saunders, Sergei Lobov, Marie Ranson
• Journal: Nature reviews. Cancer (Nat Rev Cancer) Vol. 8 Issue 7 Pg. 535-45 (Jul 2008) ISSN: 1474-1768 [Electronic] England
• PMID: 18548086 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Review)

Chemical References

• Plasminogen Activator Inhibitor 2
• Plasminogen

Topics

• Animals
• Humans
• Hydrolysis
• Neoplasm Invasiveness
• Neoplasm Metastasis
• Neoplasms (metabolism, pathology, physiopathology)
• Plasminogen (metabolism)
• Plasminogen Activator Inhibitor 2 (chemistry, metabolism, physiology)
• Protein Conformation