Speckle‐type POZ protein suppresses lipid accumulation and prostate cancer growth by stabilizing fatty acid synthase

The Prostate ◽  
2019 ◽  
Vol 79 (8) ◽  
pp. 864-871 ◽  
Author(s):  
Xiaokun Gang ◽  
Lili Xuan ◽  
Xue Zhao ◽  
You Lv ◽  
Fei Li ◽  
...  

Oncotarget ◽  
2016 ◽  
Vol 7 (12) ◽  
pp. 15135-15149 ◽  
Author(s):  
Xiaokun Gang ◽  
Yinhui Yang ◽  
Jian Zhong ◽  
Kui Jiang ◽  
Yunqian Pan ◽  
...  








2010 ◽  
Vol 28 (25) ◽  
pp. 3958-3964 ◽  
Author(s):  
Paul L. Nguyen ◽  
Jing Ma ◽  
Jorge E. Chavarro ◽  
Matthew L. Freedman ◽  
Rosina Lis ◽  
...  

Purpose Fatty acid synthase (FASN) regulates de novo lipogenesis, body weight, and tumor growth. We examined whether common germline single nucleotide polymorphisms (SNPs) in the FASN gene affect prostate cancer (PCa) risk or PCa-specific mortality and whether these effects vary by body mass index (BMI). Methods In a prospective nested case-control study of 1,331 white patients with PCa and 1,267 age-matched controls, we examined associations of five common SNPs within FASN (and 5 kb upstream/downstream, R2 > 0.8) with PCa incidence and, among patients, PCa-specific death and tested for an interaction with BMI. Survival analyses were repeated for tumor FASN expression (n = 909). Results Four of the five SNPs were associated with lethal PCa. SNP rs1127678 was significantly related to higher BMI and interacted with BMI for both PCa risk (Pinteraction = .004) and PCa mortality (Pinteraction = .056). Among overweight men (BMI ≥ 25 kg/m2), but not leaner men, the homozygous variant allele carried a relative risk of advanced PCa of 2.49 (95% CI, 1.00 to 6.23) compared with lean men with the wild type. Overweight patients carrying the variant allele had a 2.04 (95% CI, 1.31 to 3.17) times higher risk of PCa mortality. Similarly, overweight patients with elevated tumor FASN expression had a 2.73 (95% CI, 1.05 to 7.08) times higher risk of lethal PCa (Pinteraction = .02). Conclusion FASN germline polymorphisms were significantly associated with risk of lethal PCa. Significant interactions of BMI with FASN polymorphisms and FASN tumor expression suggest FASN as a potential link between obesity and poor PCa outcome and raise the possibility that FASN inhibition could reduce PCa-specific mortality, particularly in overweight men.



The Prostate ◽  
2007 ◽  
Vol 67 (10) ◽  
pp. 1111-1120 ◽  
Author(s):  
Lucy J. Schmidt ◽  
Karla V. Ballman ◽  
Donald J. Tindall


2005 ◽  
Vol 206 (2) ◽  
pp. 214-219 ◽  
Author(s):  
Tine Van de Sande ◽  
Tania Roskams ◽  
Evelyne Lerut ◽  
Steven Joniau ◽  
Hein Van Poppel ◽  
...  


Cancers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 914
Author(s):  
Po-Fan Hsieh ◽  
Wen-Ping Jiang ◽  
Shih-Yin Huang ◽  
Praveenkumar Basavaraj ◽  
Jin-Bin Wu ◽  
...  

Background: Prostate cancer (PCa) is the most prevalent malignancy diagnosed in men in Western countries. There is currently no effective therapy for advanced PCa aggressiveness, including castration-resistant progression. The aim of this study is to evaluate the potential efficacy and determine the molecular basis of Davallia formosana (DF) in PCa. Methods: LNCaP (androgen-sensitive) and C4-2 (androgen-insensitive/castration-resistant) PCa cells were utilized in this study. An MTT-based method, a wound healing assay, and the transwell method were performed to evaluate cell proliferation, migration, and invasion. Intracellular fatty acid levels and lipid droplet accumulation were analyzed to determine lipogenesis. Moreover, apoptotic assays and in vivo experiments were conducted. Results: DF ethanol extract (DFE) suppressed proliferation, migration, and invasion in PCa cells. DFE attenuated lipogenesis through inhibition of the expression of sterol regulatory element-binding protein-1 (SREBP-1) and fatty acid synthase (FASN). Moreover, DFE decreased androgen receptor (AR) and prostate-specific antigen (PSA) expression in PCa cells. We further showed the potent therapeutic activity of DFE by repressing the growth and leading to apoptosis of subcutaneous C4-2 tumors in a xenograft mouse model. Conclusions: These data provide a new molecular basis of DFE in PCa cells, and co-targeting SREBP-1/FASN/lipogenesis and the AR axis by DFE could be employed as a novel and promising strategy for the treatment of PCa.



2011 ◽  
Vol 47 (3) ◽  
pp. 420-427 ◽  
Author(s):  
Daniele Campa ◽  
Anika Hüsing ◽  
Jenny Chang-Claude ◽  
Lucie Dostal ◽  
Heiner Boeing ◽  
...  


2017 ◽  
Vol 45 (04) ◽  
pp. 757-772 ◽  
Author(s):  
Sun Haeng Park ◽  
Yoon-Young Sung ◽  
Kyoung jin Nho ◽  
Dong Sun Kim ◽  
Ho Kyoung Kim

Atherosclerosis was previously thought to be a disease that primarily involves lipid accumulation in the arterial wall. In this report, we investigated the effect of Viola mandshurica W. Becker (V. mandshurica) water extract on atherosclerosis in apolipoprotein E deficient (ApoE[Formula: see text]) mice. The administration of V. mandshurica to high-fat diet-fed mice reduced body weight, liver weight, and serum levels of lipids (total cholesterol, low-density lipoprotein-cholesterol, triglycerides), glucose, alanine transaminase, and aspartate transaminase. Histopathologic analyses of the aorta and liver revealed that V. mandshurica attenuated atherosclerotic lesions and reduced lipid accumulation, inflammatory responses and fatty acid synthesis. V. mandshurica also increased phosphorylation of adenosine monophosphate-activated protein kinase (AMPK), thereby reducing acetyl-CoA carboxylase (ACC) in liver tissue and inhibiting sterol regulatory element-binding protein 1c (SREBP-1c). V. mandshurica reduced protein expression levels of adhesion molecules (intercellular adhesion molecule-1, vascular cell adhesion molecule-1, and E-selectin) as well as ACC, fatty acid synthase, and SREBP-1c. In addition, quantitative analysis of V. mandshurica by high-performance liquid chromatography revealed the presence of esculetin and scopoletin. Esculetin and scopoletin reduced adhesion molecules in human aortic smooth muscle cells. Our results indicate that the anti-atherosclerotic effects of V. mandshurica may be associated with activation of the AMPK pathway. Therefore, AMPK-dependent phosphorylation of SREBP-1c by V. mandshurica may be an effective therapeutic strategy for combatting atherosclerosis and hepatic steatosis.



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