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Aspartate β-Hydroxylase expression promotes a malignant pancreatic cellular phenotype
Xiaoqun Dong1,2, Qiushi Lin1,2, Arihiro Aihara3
1Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, The University of Rhode Island, Kingston, RI, USA.
Oncotarget
|December 9, 2014
Summary
Aspartate β-hydroxylase (ASPH) drives pancreatic cancer (PC) growth by activating Notch signaling. Inhibiting ASPH
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Pancreatic cancer (PC) is a leading cause of cancer mortality, characterized by aggressive progression and metastasis.
- Aspartate β-hydroxylase (ASPH), a cell surface enzyme, is overexpressed in PC and linked to malignant phenotypes.
- ASPH's enzymatic activity is crucial for its role in PC development and progression.
Purpose of the Study:
- To investigate the role of Aspartate β-hydroxylase (ASPH) in pancreatic cancer (PC) progression.
- To elucidate the molecular mechanisms by which ASPH influences PC growth.
- To evaluate the therapeutic potential of inhibiting ASPH activity in PC.
Main Methods:
- Investigated ASPH expression in PC tissues.
- Examined the effect of ASPH upregulation on cancer cell proliferation, migration, invasion, and colony formation in vitro.
- Assessed PC tumor growth in vivo.
- Utilized a small molecule inhibitor targeting ASPH's β-hydroxylase activity.
- Analyzed the impact of ASPH inhibition on Notch signaling pathway activation.
Main Results:
- ASPH is highly overexpressed in pancreatic cancer.
- ASPH upregulation promotes PC cell proliferation, migration, invasion, and colony formation in vitro and enhances tumor growth in vivo.
- ASPH's transforming properties are dependent on its enzymatic activity.
- ASPH links PC growth factor signaling to Notch pathway activation.
- A small molecule inhibitor of ASPH reduced PC growth by downregulating Notch signaling.
Conclusions:
- ASPH plays a critical role in the growth and progression of pancreatic cancer.
- ASPH enzymatic activity is essential for promoting a malignant phenotype in PC.
- Targeting ASPH activity represents a promising therapeutic strategy for pancreatic cancer by modulating the Notch signaling pathway.
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