Among all cancers, non-small cell lung cancer (NSCLC) and glioblastoma (the most common and most malignant type of astrocytic brain cancer) are two of the most deadly cancers with survival measured in months. Earlier diagnosis using a robust biomarker would likely improve survival. However, currently no such biomarker exists due to the heterogeneity of the diseases and the lack of biomarkers with functional relevance in tumorigenesis. The extracellular heparan sulfate endosulfatases, SULF1 and SULF2, are overexpressed in a wide variety of human cancers, and SULF2, in particular, has been shown by the PIs of this proposal, to drive carcinogenesis in NSCLC and malignant astrocytoma through regulation of several cancer-promoting pathways. The overall goal of the proposed study is to evaluate plasma for the presence of the SULFs and consequences of SULF-bioactivity in order to develop novel biomarkers for the early detection of NSCLC and malignant astrocytoma. The SULFs are unique as they modulate the binding of a multiplicity of signaling molecules, including Wnts, VEGF, and FGF-1, by acting on the 6O-sulfation of glucosamine (6OS) on heparan sulfate proteoglycans (HSPGs). As extracellular enzymes that are both tethered to the cell membrane and secreted, the SULFs and their HSPG substrates are present in the extracellular environment and have great potential as novel biomarkers for early detection of cancer in body fluids. This innovative project assembles a diverse team of investigators to integrate mechanistic studies of SULF function in cancer with practical applications of this knowledge to validate a novel biomarker for the early detection of cancer.
Our Aims are:
Aim 1 : Characterize the expression levels of SULFs and the expression and sulfation status of their HSPG substrates in tumor samples from NSCLC and astrocytoma patients.
Aim 2 : Determine SULF levels in plasma and correlate these with tumor presence and progression Aim 3: Determine the 6OS sulfation status of HSPGs in plasma and correlate these with tumor presence and progression.
Aim 4 : Characterize the plasma levels of heparin-binding factors (growth factors, morphogens, cytokines, chemokines) that are potentially mobilized by SULF action in the tumor and correlate with tumor SULF levels. Our investigation of novel SULF-based biomarkers could lead to ELISAs for the early diagnosis of NSCLC and malignant astrocytoma and could become a new basis for patient management. In addition, these studies will promote collaborations and stimulate Trans-Alliance projects aimed at identifying how changes in cellular carbohydrates promote cancer progression and how to use this information to identify biomarkers for the early cancer detection.

Public Health Relevance

This novel project will confirm the clinical utility of plasma levels of the extracellular heparan sulfate endosulfatases, or SULFs, as robust biomarkers for the early detection of non-small lung cancer (NSCLC) and malignant astrocytoma, two of the most deadly cancers due to failure in early diagnosis. As the SULFs are overexpressed and help to drive carcinogenesis in a number of cancers including the two in this proposal, our results could have a major impact upon patient care.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Research Project--Cooperative Agreements (U01)
Project #
5U01CA168878-03
Application #
8717613
Study Section
Special Emphasis Panel (ZCA1-SRLB-4 (M1))
Program Officer
Krueger, Karl E
Project Start
2012-08-16
Project End
2017-06-30
Budget Start
2014-07-01
Budget End
2015-06-30
Support Year
3
Fiscal Year
2014
Total Cost
$424,543
Indirect Cost
$155,845
Name
University of California San Francisco
Department
Surgery
Type
Schools of Medicine
DUNS #
094878337
City
San Francisco
State
CA
Country
United States
Zip Code
94143
Tran, Vy M; Wade, Anna; McKinney, Andrew et al. (2017) Heparan Sulfate Glycosaminoglycans in Glioblastoma Promote Tumor Invasion. Mol Cancer Res 15:1623-1633
Miroshnikova, Yekaterina A; Mouw, Janna K; Barnes, J Matthew et al. (2016) Tissue mechanics promote IDH1-dependent HIF1?-tenascin C feedback to regulate glioblastoma aggression. Nat Cell Biol 18:1336-1345
Flowers, Sarah A; Zhou, Xin; Wu, Jing et al. (2016) Expression of the extracellular sulfatase SULF2 is associated with squamous cell carcinoma of the head and neck. Oncotarget 7:43177-43187
Phillips, Joanna J; Gong, Henry; Chen, Katharine et al. (2016) Activating NRF1-BRAF and ATG7-RAF1 fusions in anaplastic pleomorphic xanthoastrocytoma without BRAF p.V600E mutation. Acta Neuropathol 132:757-760
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Wade, Anna; Engler, Jane R; Tran, Vy M et al. (2015) Measuring sulfatase expression and invasion in glioblastoma. Methods Mol Biol 1229:507-16
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Lemjabbar-Alaoui, Hassan; McKinney, Andrew; Yang, Yi-Wei et al. (2015) Glycosylation alterations in lung and brain cancer. Adv Cancer Res 126:305-44
Singer, Mark S; Phillips, Joanna J; Lemjabbar-Alaoui, Hassan et al. (2015) SULF2, a heparan sulfate endosulfatase, is present in the blood of healthy individuals and increases in cirrhosis. Clin Chim Acta 440:72-8
Phillips, Joanna J; Aranda, Derick; Ellison, David W et al. (2013) PDGFRA amplification is common in pediatric and adult high-grade astrocytomas and identifies a poor prognostic group in IDH1 mutant glioblastoma. Brain Pathol 23:565-73

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