Navigation Links
Scientists identify specific markers that trigger aggressiveness of liver cancer
Date:10/20/2009

Hepatocellular carcinoma (HCC) or primary liver cancer forms in the epithelial tissue of the liver and is most commonly caused by the hepatitis B virus (HBV) or hepatitis C virus (HCV). In the U.S., the National Cancer Institute (NCI) estimates that 15,000 men and 6,000 women are diagnosed with HCC each year. Worldwide, HCC accounts for 632,000 cases with the highest regions being Western Pacific and Africa according to a 2004 World Health Organization (WHO) report.

Researchers from Taipei Veterans General Hospital investigated the molecular mechanisms of HCC, one of the most common tumors found in Taiwan and largely caused by the high prevalence (15%-20%) of HBV in the country. The study, funded in part by a grant from the National Science Council, is the first to provide a comprehensive profile of multiple Epithelial-Mesenchymal Transition (EMT) markers and to demonstrate that Snail and Twist, but not Slug, are the major inducers of EMT in HCC. Results of the study are published in the November issue of Hepatology, a journal of the American Association for the Study of Liver Diseases.

EMT is critical in the development of invasiveness and metastatic potential of human cancers, and described as process where epithelial cells no longer adhere to one another, taking on fibroblastic properties. The EMT process is initiated by suppression of E-cadherin function through the major EMT regulators (Snail, Slug, and Twist). E-cadherin (calcium dependent adhesion molecules) is a type of protein found in the epithelial cells that ensure tissue cells bind together. When E-cadherin function is lost, cancer is able to progress and metastasize.

Professor Jaw-Ching Wu and colleagues obtained samples of primary HCC with adjacent non-tumorous liver tissues from 123 patients who had hepatic resection surgery between 1990 and 2002 at Taipei Veterans General Hospital. Reduced E-cadherin function was observed in 60.2% of patients. "We found a significant decrease in cancer-free intervals and overall survival for those patients who had a reduction in E-cadherin function," explained Dr. Wu. A downregulated expression of E-cadherin was also associated with large tumor size and multi-nodular tumors.

Results show that co-expression Snail and Twist (transcription factors or proteins that control when genes are switched on or off) indicates the worst prognosis for HCC patients. "Our research is the first to prove that the two proteins (Snail and Twist) work independently, but together promote EMT," noted Dr. Wu.

According to the study, overexpression of Twist is correlated with HCV-related HCC, partially explaining the highly invasive behavior and poor prognosis for patients with this form of liver cancer. Dr Wu added, "Our results provide essential information for determining HCC prognosis in patients and identifies possible new treatments for future HCC management."


'/>"/>

Contact: Dawn Peters
medicalnews@wiley.com
781-388-8408
Wiley-Blackwell
Source:Eurekalert

Related medicine news :

1. New prion protein discovered by Canadian scientists may offer insight into mad cow disease
2. Scientists Probe Sepsis Deadly Secrets
3. Scientists puzzled by severe allergic reaction to cancer drug in the middle Southern US
4. Scientists Develop Natural Protection for Stored Foods
5. Scientists detect presence of marburg virus in african fruit bats
6. Scientists Spot Brains Free Will Center
7. Scientists ID Likely Culprit in Popcorn Lung
8. Scientists explain how insulin secreting cells maintain their glucose sensitivity
9. Scripps Research scientists shed new light on how antibodies fight HIV
10. Scientists, physicians present latest findings in personalized cancer treatment and prevention
11. Scientists demonstate link between genetic variant and effectiveness of smoking cessation meds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/2/2016)... ... , ... In honor of National Physical Fitness and Sports Month in May, ... fitness journey on social media. , The foot care company, which specializes in ... voucher each week during May to one winner. , “Whether the goal is to ...
(Date:5/2/2016)... ... May 02, 2016 , ... Dr. Philip Shindler, dentist in ... day treatments. In the past, many necessary dental treatments could require multiple appointments to ... anesthetic shots and extra chair time. Not only could this be inconvenient, but it ...
(Date:5/2/2016)... ... , ... MedPro Waste Disposal, LLC (MedPro) is proud to announce that it ... back service for an all-inclusive rate. MedPro Disposal President, Dan Hansen, says, “We’re really ... of the clients in the country who are looking for an alternative to their ...
(Date:5/2/2016)... ... May 02, 2016 , ... Zitter ... Specialty Pharmacy Patient Satisfaction Award that will recognize specialty pharmacies for their achievements ... Zitter Health Insights’ Specialty Pharmacy Patient Satisfaction Survey compiled throughout 2016. Results will ...
(Date:5/2/2016)... ... May 02, 2016 , ... The 2016 World Ultimate & Guts Championship (WUGC) Mixed ... Manhattan College, made the cut. The WUGC is being held in London, England this year ... gold in the men’s division, another gold in the women’s masters division, and a silver ...
Breaking Medicine News(10 mins):
(Date:4/27/2016)... April 27, 2016 Transparency Market ... Devices Market - Global Industry Analysis, Size, Share, Growth, ... report, the global skincare devices market was valued at ... expand at a CAGR of 10.1% from 2015 to ... Browse the full Skincare Devices Market (Treatment Device - ...
(Date:4/27/2016)... April 27, 2016 Tie-up with ... initiative to save newborns   Fortis ... & newborns in collaboration with Breast Milk Foundation (BMF), a ... Pasteurized Human Milk Bank, ,Amaara, in Delhi-NCR today. This non-profit ... source for infants and should be available to babies deprived ...
(Date:4/27/2016)... , April 27, 2016 Shire plc ... Jeff Poulton , Chief Financial Officer, will present at the ... Boston, MA on Wednesday, May 04, 2016, 10:00 ... will be available on the Presentations and Webcasts section of ... of the webcast will be available on this same website ...
Breaking Medicine Technology: