Osteopontin: an effector and an effect of tumor metastasis.

Abstract:

:Osteopontin (OPN) is a matricellular protein that is produced by multiple tissues in our body and is most abundant in bone. It is also produced by cancer cells and plays a determinative role in the growth, progression and metastasis of cancer. Clinically, OPN has been reported to be upregulated in tumor cells per se; this is also reflected by increased levels of OPN in the circulation. Thus, increased OPN levels the plasma are an effect of tumor growth and progression. Functionally, high OPN levels are determinative of higher incidence of bone metastases in mouse models and are clinically correlated with metastatic bone disease and bone resorption in advanced breast cancer patients. Several research efforts have been made to therapeutically target and inhibit the activities of OPN. In this article we have reviewed OPN in its role as an effector of critical steps in tumor progression and metastasis, with a particular emphasis on its role in facilitating bone metastasis of breast cancer. We have also addressed the role of the host-derived OPN in influencing the malignant behavior of the tumor cells.

journal_name

Curr Mol Med

authors

Shevde LA,Das S,Clark DW,Samant RS

doi

10.2174/156652410791065381

subject

Has Abstract

pub_date

2010-02-01 00:00:00

pages

71-81

issue

1

eissn

1566-5240

issn

1875-5666

pii

CMM#07

journal_volume

10

pub_type

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