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SPP1

Basics

Aliases:
This biomarker is also known as:
  • Bone sialoprotein 1,
  • OPN,
  • early T-lymphocyte activation 1,
  • Secreted phosphoprotein 1,
  • Urinary stone protein,
  • Uropontin,
  • BSPI,
  • Nephropontin,
  • BNSP,
  • ETA-1,
  • SPP-1,
  • Osteopontin,

View in BioMuta

Description…

Osteopontin, also known as SPP1 or OPN, a secreted, integrin-binding matrix phosphorylated glycoprotein is involved in bone remodeling by osteoclasts and is overexpressed in many advanced cancers. Osteopontin has been identified as one of the leading genes that promotes the metastasis of hepatocellular carcinoma.

Attributes

QA State: Curated
Type: Protein
Short Name:

Datasets

There are no datasets associated with this biomarker.

Organs

The following organs have data associated with this biomarker…

Lung

Attributes

Phase: One
QA State: Under Review

Overview

Osteopontin and other small integrin-binding ligand N-linked glycoproteins are emerging as important players in many stages of cancer progression. Chosen for the EDRN by detection in microarray expression studies.

Performance Comment

Of the 28 ovarian cancer biomarkers tested in prediagnostic specimens, from the PLCO, CA125 remains the single best biomarker for ovarian cancer and has its strongest signal within six months of diagnosis. Osteopontin (SPP1) alone was not a strong predictor.

Ovary

Attributes

Phase: Three
QA State: Under Review

Overview

Osteopontin (OPN) is a secreted, integrin-binding matrix phosphorylated glycoprotein that is overexpressed in many advanced cancers. The expression of OPN by HO-8910 ovarian cancer cells greatly promoted the progression of ovarian cancer. OPN expression dramatically increased the colony formation of ovarian cancer cells in vitro and tumor growth in vivo. Under the stress induced by serum depletion or curcumin treatment, OPN expression promoted the survival of ovarian cells through preventing stress-induced apoptosis. At the molecular level, both endogenous and exogenous OPN expression activated the PI3-K/Akt survival pathway and dramatically decreased p53 expression under serum depletion. In addition, HIF-1alpha was induced in OPN-producing cells under normoxia. Furthermore, we also found that inhibition of the PI3-K/Akt pathway attenuated OPN-mediated HIF-1alpha up-regulation in ovarian cancer cells. Taken together, these results indicate that OPN can increase the survival of ovarian cancer cells under stress conditions in vitro and promote the late progression of ovarian cancer in vivo, and the survival-promoting functions of OPN are mediated through Akt activation and the induction of HIF-1alpha expression.

Performance Comment

Of the 28 ovarian cancer biomarkers tested in prediagnostic specimens, from the PLCO, CA125 remains the single best biomarker for ovarian cancer and has its strongest signal within six months of diagnosis. Osteopontin (SPP1) alone was not a strong predictor.

Studies

This biomarker is currently being annotated or is under review. You must be logged in or do not have permission to view any additional information. Contact Heather Kincaid at heather.kincaid@jpl.nasa.gov if you should have access to this biomarker.

News

The final report of the 2013 Cancer Biomarkers Bioinformatics Workshop is now available.

Announcement 03/06/2014

Thank you to everyone who helped make the 27th EDRN Steering Committee Meeting a success. We look forward to seeing everyone at the 9th EDRN Scientific Workshop from September 8-11, 2014 in Washington D.C.

Announcement