Abstract:
:Cathepsin X is a cysteine carboxypeptidase, localized predominantly in immune cells, regulating their proliferation, maturation, migration and adhesion. It has recently been confirmed as a significant promoter of malignant progression. Its role in signal transduction was first implied through the interaction with integrin receptors, either by binding with the RGD motif or by proteolytic cleavage of the C-terminal amino acids of the cytosolic part of the integrin beta chain. Several other molecules, involved in cellular signaling, have since been shown to be targets for cathepsin X, such as γ-enolase, chemokine CXCL-12, bradykinin, kallidin, huntingtin and profilin 1. In cancer, cathepsin X regulates adhesion of tumor and endothelial cells and their migration and invasion through the extracellular matrix. It also promotes tumor progression by bypassing cellular senescence and by inducing an epithelial-mesenchymal transition. The high RNA and protein levels of cathepsin X, found in tumor samples and bodily fluids of patients with various cancer types, further support its active role in tumor progression. Its prognostic value and relation to response to chemotherapy confirm cathepsin X as a new target for improving diagnosis and treating cancer patients.
journal_name
Semin Cancer Bioljournal_title
Seminars in cancer biologyauthors
Kos J,Vižin T,Fonović UP,Pišlar Adoi
10.1016/j.semcancer.2014.05.001subject
Has Abstractpub_date
2015-04-01 00:00:00pages
76-83eissn
1044-579Xissn
1096-3650pii
S1044-579X(14)00062-5journal_volume
31pub_type
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journal_title:Seminars in cancer biology
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journal_title:Seminars in cancer biology
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