Hepatocellular carcinoma (HCC) causes about 700,000 deaths each year, and its incidence in the US has tripled over the past 30 years. Available therapies are curative only in early-stage HCC. Better early-detection methods and treatments will require a greater understanding of the molecular mechanisms regulating the initiation and growth of HCC. We have identified a role for sulfatase 2 (SULF2), an extracellular endosulfatase, in HCC pathogenesis and are especially excited about the recent spontaneous development of liver cancers in our transgenic mice overexpressing SULF2 in the liver. Our previous work has shown that SULF2 releases heparin-binding growth factors from heparan sulfate glycosaminoglycan (HSGAG) storage sites in the extracellular compartment, increases growth factor signaling, and promotes HCC tumorigenesis. These results show that SULF2 exerts its effects in HCC in part through modulation of the Wnt signaling pathway. We have now identified the target molecule of this newly identified SULF2-Wnt signaling as the transcriptional factor GLI1, an effector of the Hedgehog pathway. Moreover, we have discovered that this newly identified SULF2-Wnt-GLI1 axis activates two major regulators of the HCC tumor microenvironment, transforming growth factor ? (TGF?) and interleukin 6 (IL-6). We will use biochemical and cell biology methods, structural and functional analyses, and in vitro and in vivo approaches to systemically investigate the mechanistic role of the novel SULF2-Wnt-GLI1 axis in the HCC microenvironment and tumorigenesis. Successful completion of these studies will increase our understanding of the pathogenesis of HCC and allow future testing of rational strategies for treatment of HCC based on these findings. Overall, this proposal is potentially of high impact given the lack of effective treatments for advanced HCC. The findings from this research will also likely be generalizable to other cancer types because of the known involvement of SULF2, the Wnt pathway, and GLI1 in other tumors.

Public Health Relevance

Liver cancer is a leading cause of death from cancer worldwide and has become three times more common in the US over the past 30 years. Medications currently being used to treat liver cancer are not very effective. Therefore, there is a vital need to develop additional drug treatments that will provide multiple approaches for treating all individuals afflicted with this debilitating illness. This research should provide important information that can be used in developing new liver cancer therapies.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Research Project (R01)
Project #
3R01CA165076-03S2
Application #
8795284
Study Section
Tumor Microenvironment Study Section (TME)
Program Officer
Lin, Alison J
Project Start
2012-03-01
Project End
2017-02-28
Budget Start
2014-03-01
Budget End
2015-02-28
Support Year
3
Fiscal Year
2014
Total Cost
$48,053
Indirect Cost
$17,831
Name
Mayo Clinic, Rochester
Department
Type
DUNS #
006471700
City
Rochester
State
MN
Country
United States
Zip Code
55905
Li, Ying; Chaiteerakij, Roongruedee; Kwon, Jung Hyun et al. (2018) A model predicting short-term mortality in patients with advanced liver cirrhosis and concomitant infection. Medicine (Baltimore) 97:e12758
Yang, Ju Dong; Addissie, Benyam D; Mara, Kristin C et al. (2018) GALAD Score for Hepatocellular Carcinoma Detection in Comparison to Liver Ultrasound and Proposal of GALADUS Score. Cancer Epidemiol Biomarkers Prev :
Dhanasekaran, Renumathy; Nault, Jean-Charles; Roberts, Lewis R et al. (2018) Genomic Medicine and Implications for Hepatocellular Carcinoma Prevention and Therapy. Gastroenterology :
Roberts, Rosebud O; Kang, Yoo Na; Hu, Chunling et al. (2017) Decreased Expression of Sulfatase 2 in the Brains of Alzheimer's Disease Patients: Implications for Regulation of Neuronal Cell Signaling. J Alzheimers Dis Rep 1:115-124
Yang, Ju Dong; Altekruse, Sean F; Nguyen, Mindie H et al. (2017) Impact of country of birth on age at the time of diagnosis of hepatocellular carcinoma in the United States. Cancer 123:81-89
Chen, Gang; Nakamura, Ikuo; Dhanasekaran, Renumathy et al. (2017) Transcriptional Induction of Periostin by a Sulfatase 2-TGF?1-SMAD Signaling Axis Mediates Tumor Angiogenesis in Hepatocellular Carcinoma. Cancer Res 77:632-645
Yang, Ju Dong; Ahmed Mohammed, Hager; Harmsen, William S et al. (2017) Recent Trends in the Epidemiology of Hepatocellular Carcinoma in Olmsted County, Minnesota: A US Population-based Study. J Clin Gastroenterol 51:742-748
Yang, Ju Dong; Dai, Jianliang; Singal, Amit G et al. (2017) Improved Performance of Serum Alpha-Fetoprotein for Hepatocellular Carcinoma Diagnosis in HCV Cirrhosis with Normal Alanine Transaminase. Cancer Epidemiol Biomarkers Prev 26:1085-1092
Ding, Xiwei; Chaiteerakij, Roongruedee; Moser, Catherine D et al. (2016) Antitumor effect of the novel sphingosine kinase 2 inhibitor ABC294640 is enhanced by inhibition of autophagy and by sorafenib in human cholangiocarcinoma cells. Oncotarget 7:20080-92
Bergquist, John R; Ivanics, Tommy; Storlie, Curtis B et al. (2016) Implications of CA19-9 elevation for survival, staging, and treatment sequencing in intrahepatic cholangiocarcinoma: A national cohort analysis. J Surg Oncol 114:475-82

Showing the most recent 10 out of 36 publications