Navigation Links
Research suggests a blood test to locate gene defects associated with cancer may not be far off
Date:1/8/2014

HOUSTON, TX - Some surprising research findings from scientists at The University of Texas MD Anderson Cancer Center suggest it's possible a simple blood test could be developed to determine whether gene mutations associated with pancreatic cancer exist without the need of locating and testing tumor tissue. This appears possible following the discovery that tiny particles the size of viruses called 'exosomes,' which are shed by cancer cells into the blood, contain the entire genetic blueprint of cancer cells. By decoding this genomic data and looking for deletions and mutations associated with cancer, the research team believes this discovery could be translated into a test that helps physicians detect cancer and treat patients. The findings are based on research led by Raghu Kalluri, M.D., Ph.D., chairman and professor in MD Anderson's Department of Cancer Biology. The research results appear in the current online edition of the Journal of Biological Chemistry.

"At the present time, there is no single blood test that can screen for all cancer related DNA defects," said Kalluri. "In many cases, current protocols require a tumor sample to determine whether gene mutations and deletions exist and therefore determine whether the tumor itself is cancerous or benign. To procure tumor tissue, one needs to know that a tumor exists and if so, is it accessible for sample collection or removal? Finally, there are always risks and significant costs associated with surgical procedures to acquire tumor tissue."

Historically, researchers were aware these miniscule particles existed and that they carried nucleic acids and proteins. It was also believed that exosomes carried small portions of the person's DNA. However, upon further investigation, the MD Anderson research team was surprised to learn that the person's entire double-stranded genomic DNA spanning all chromosomes can be found in exosomes, including those mutated chromosomes that cause various cancers. Furthermore, Kalluri and colleagues discovered that DNA derived from exosomes carried the same cancer-related genetic mutations compared to the cancer cells taken from tumor.

"Because different forms of cancer are associated with different chromosomal mutations , we believe analysis of exosome DNA taken from blood samples may not only help determine the presence of a cancerous tumor somewhere in the body but also identify mutations without a need for tumor sample," added Kalluri. "We also believe this "fingerprint" will help lead us to the likely site of the tumor in the body. For instance, certain mutation spectrums would suggest pancreatic cancer or a brain-based tumor. While there is much more work to be conducted to develop such a test, having a tool such as this would increase our abilities to detect cancer in an earlier stage and therefore increase our chances of effective treatment."

"This seminal discovery paves the way for highly sensitive screening for driver mutations of cancer in the blood without the need for biopsy of tumor tissue and importantly, lays the foundation for a new method for the early detection of cancer when the chance for cure is greatest," said MD Anderson President Ronald A. DePinho, M.D.


'/>"/>

Contact: Jim Newman
jnewman@mdanderson.org
713-792-0662
University of Texas M. D. Anderson Cancer Center
Source:Eurekalert

Related medicine news :

1. Global Teleradiology Market Is Expected to Reach USD 3.78 Billion in 2019: Transparency Market Research
2. North America to Lead Flow Cytometry Market Till 2020, States Allied Market Research in Its Report Published at MarketPublishers.com
3. Light fantastic -- Cable announces £3.6 million for manufacturing research
4. Family Voices Awarded Project to Fight Childhood Obesity by the Patient-Centered Outcomes Research Institute
5. German Research Foundation approves research unit to study extreme experiences in life
6. SckoonCup Research Shows Revolutionary Trend in Feminine Care - Women Seek Healthier Alternatives to Tampons as Use of Menstrual Cups Soar 500%
7. Growth of Mice Model Industry (Oncology, Immunology, CNS) with 2018 Forecasts in a New Research Report at RnRMarketResearch.com
8. Winter Dry Eye Season Causes Blurred Vision Warns Dry Eye Researcher
9. Research shows molecular, protein targeting therapies may be best treatment for certain lung cancer
10. Monoclonal Antibodies Market in Gastric and Esophageal Cancers to Reach USD 766 Mln by 2019, Says GBI Research in Its Report Available at MarketPublishers.com
11. Water Treatment Chemicals Procurement Research Report Now Available from IBISWorld
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/9/2016)... (PRWEB) , ... December 09, 2016 , ... The ... Drug Dependence, Inc. (NCADD) is recommending the film Whispering Spirits and ... the District of Columbia as an education tool in the war against teen drug ...
(Date:12/9/2016)... ... December 09, 2016 , ... MEDI+SIGN®, a provider of fully-automated ... new solution for Emergency Departments (ED) has been added to their portfolio. Housed ... examination rooms, and with a simplified pallet of information available to the patient, ...
(Date:12/8/2016)... ... 2016 , ... After enjoying record-breaking attendance at its last ... 33rd Annual Issues & Research Conference, March 2-3, 2017, at the Westin ... is “Persistent Challenges and New Opportunities: Using Research to Accelerate the Dialogue." 2016 ...
(Date:12/8/2016)... ... 08, 2016 , ... CURE Media Group, the nation’s leading digital and print ... Upstage Lung Cancer in efforts to combat lung cancer, announced CURE Media Group President ... “CURE Media Group is honored to team up with Upstage Lung Cancer in order ...
(Date:12/8/2016)... ... December 08, 2016 , ... Launching ... innovative Unified Instance Manager architecture, meeting the needs of multichannel growth and ... the unattended auto-dialing system without agents, Presence Robodialer, provides greater operational capacity, ...
Breaking Medicine News(10 mins):
(Date:12/9/2016)... Dec 9, 2016 Research and Markets has ... report to their offering. ... The global travel vaccines market to grow at ... report covers the present scenario and the growth prospects of the ... the report considers the revenue generated from the sales of various ...
(Date:12/9/2016)... , Dec. 9, 2016  Axovant Sciences ... clinical-stage biopharmaceutical company focused on the treatment of ... data from a Phase 2b trial evaluating treatment ... donepezil, compared with donepezil plus placebo in people ... the addition of intepirdine to treatment was associated ...
(Date:12/8/2016)... , Dec. 8, 2016 IRIDEX Corporation (NASDAQ: ... offer newly issued shares of common stock, $0.01 par value ... an underwritten public offering.  The final terms of the Offering ... of pricing, and there can be no assurance as to ... IRIDEX expects to use the net proceeds it will receive ...
Breaking Medicine Technology: