Dipeptidyl peptidase IV (DPP IV/CD26) is a cell-surface plasminogen receptor.

Published online

Journal Article (Review)

Binding of plasminogen (Pg) to cell-surface receptors colocalized with plasminogen activators promotes Pg activation and enables cells to utilize the proteolytic activity of plasmin (Pm). Proteolysis by Pm is necessary in several physiological and pathological processes requiring extracellular matrix degradation including cell migration, tumor cell invasion and metastasis. The binding of Pg to cell-surface receptors is regulated by two major structural features: L-lysine binding sites (LBS) and negatively charged sialic acid residues located on its carbohydrate chains. Pg uses its LBS to bind to a wide spectrum of cell-surface receptors whereas binding through its sialic acid residues is limited only to receptor proteins containing cationic pockets or lectin-like modules. In this review, we discuss both mechanisms, including the identification of DPP IV as a Pg receptor and the possible physiological role of Pg/Pm in complex with DPP IV and adenosine deaminase (ADA) and /or the Na+/H+ exchanger isoform NHE-3 in prostate cancer.

Full Text

Duke Authors

Cited Authors

  • Gonzalez-Gronow, M; Kaczowka, S; Gawdi, G; Pizzo, SV

Published Date

  • January 1, 2008

Published In

Volume / Issue

  • 13 /

Start / End Page

  • 1610 - 1618

PubMed ID

  • 17981653

Pubmed Central ID

  • 17981653

International Standard Serial Number (ISSN)

  • 1093-9946

Language

  • eng

Conference Location

  • United States