Navigation Links
Tumor metastasis with a twist

In the early stages of human embryogenesis, a transcription factor called Twist1 plays a key regulatory role in how the embryo assumes form and function. Much later in life, however, researchers at the University of California, San Diego School of Medicine, say Twist1 can re-emerge, taking a darker and more deadly turn.

In a paper published in the March 15, 2011 issue of Cancer Cell, UCSD scientists led by Jing Yang, PhD, assistant professor of pharmacology and pediatrics, identify a unique function of Twist1 in later life: it promotes the formation of invadopodia in tumor cells, a vital step in the spread of such cells (metastasis) to surrounding tissues and other parts of the body.

Invadopodia (meaning "invasive feet") are tiny protrusions of tumor cells that extend into the extracellular matrix -- the surrounding connective tissue and fibers that provide support. Invadopodia concentrate enzymes that degrade the matrix so that tumor cells can break away and metastasize.

Previous studies have linked the expression of Twist1 to many aggressive, solid-tumor cancers, including melanomas, neuroblastomas, as well as breast and prostate cancer. The new research by Yang and colleagues describes in detail how Twist1 initiates the multi-step pathway resulting in invadopodia formation and matrix degradation. The research also reveals places in the process that may present potential targets for future anti-metastasis therapies.

After embryogenesis, Twist1 is normally suppressed. Cancer cells, however, reactivate the transcription factor, enabling Twist1 to initiate its complex pathway leading to metastasis. Drug designers, however, have yet to successfully devise a way to directly inhibit transcription factors like Twist1. The UCSD study points to other possibilities.

"We hope to inhibit downstream targets of Twist1 (such as platelet-derived growth factor receptors) to inhibit invadopodia formation and function," Yang said. "Our study suggests that inhibition of invadopodia-mediated matrix degradation could be an effective way to suppress metastasis."

If that happens, a cancer tumor becomes a stable, unmoving and easier target for other types of therapeutic treatments.


Contact: Scott LaFee
University of California - San Diego

Related medicine news :

1. Researchers discover new way to kill pediatric brain tumors
2. Researchers create drug to keep tumor growth switched off
3. Fluorescent probes light up cancerous tumors
4. Scripps Health Begins Pioneering Study of Human Tumor Sequencing in Cancer Patients
5. Drug for advanced kidney cancer shrinks tumors prior to surgery
6. Researchers discover second protective role for tumor-suppressor
7. Personalizing cancer: Creating biomarkers from tumor DNA
8. Pittsburgh Neurosurgeons Explore Use of Drug that Illuminates Brain Tumor Cells To Guide Surgery
9. Tumor mechanism identified
10. Mayo oral cancer study shows full tumor genome
11. How estrogen feeds breast tumors
Post Your Comments:
(Date:11/27/2015)... ... 28, 2015 , ... There is only one major question facing all law ... , This question has not been an easy question to answer. Especially when the ... the younger workforce don’t share the same discipline around working long hours. , ...
(Date:11/27/2015)... (PRWEB) , ... November 27, 2015 , ... According to ... out by the University of Toronto and the University of British Columbia suggested that ... for head injuries. The article explains that part of the reason for the controversial ...
(Date:11/27/2015)... (PRWEB) , ... November 27, 2015 , ... ... affecting the health care in America. As people age, more care is needed, ... costs are rising, and medical professionals are being overworked. The forgotten part of ...
(Date:11/27/2015)... , ... November 27, 2015 , ... ... safe and convenient way to dispense prescription medications at home, so he invented ... way to monitor and dispense prescription medications. In doing so, it could help ...
(Date:11/27/2015)... ... November 27, 2015 , ... Lizzie’s Lice Pickers just ... is offering customers 10% off of their purchase of lice treatment product. In addition, ... price. According to a company spokesperson. “Finding lice is a sure way to ruin ...
Breaking Medicine News(10 mins):
(Date:11/29/2015)... 2015 CIVCO Medical Solutions will demonstrate ... Radiological Society of North America ... November 29 – December 4, 2015. The ... customers unrivaled versatility, enhanced user experience and deliver ... --> --> ...
(Date:11/27/2015)... YORK , November 27, 2015 ... system is set to go online. The potential to ... processes is vast and far from fully exploited as ... to patient health records, either via mobile tablet or ... ) --> ) --> ...
(Date:11/27/2015)... , Nov. 27, 2015 Research and Markets ... "Global Intrauterine Devices Market 2015-2019" report to ... --> In this report, the author the present ... market for 2015-2019. To calculate the market size, the ... type of products: Hormonal IUDs and copper IUDs. The ...
Breaking Medicine Technology: