Modeling metastasis

August 24, 2012
This is an illustration of the early stage of metastasis, called "intravasation." Tumor cells (blue) in contact with the bloodstream experience shear forces that can be strong enough to exceed the adhesion forces keeping them attached to the primary tumor. Once released into the bloodstream, they become circulating tumor cells capable of spreading the disease to other sites. Credit: The University of Southern California, Oregon Health and Science University, and the Scripps Research Institute

Cancer metastasis, the escape and spread of primary tumor cells, is a common cause of cancer-related deaths. But metastasis remains poorly understood. Studies indicate that when a primary tumor breaks through a blood vessel wall, blood's "stickiness" tears off tumor cells the way a piece of tape tears wrapping paper.

Until now, no one knew the physical forces involved in this process, the first step in metastasis. Using a statistical technique employed by animators, scientists created a new computer simulation that reveals how cancer cells enter the bloodstream. The researchers present their work in a paper accepted to the (AIP) journal Physics of Fluids.

To create the simulation, a group of scientists from the University of Southern California in Los Angeles, Oregon Health and Science University in Portland, Ore., and The Scripps Research Institute in La Jolla, Calif., first had to describe the physics of the process. The researchers couldn't directly measure the fluid forces acting on a tumor cell in the body. Instead, they imaged blood flowing at different velocities over a breast cancer cell on a glass plate. Then, they bridged the gap between known and unknown with an Active Shape Model, a statistical technique that animators use to create furry monsters. Active Shape Models track the shape of an object as it dynamically deforms. When combined with the experimental data, the modeling enabled the team to compute the fluid forces acting on the cell, and that in turn helped them tune the simulation.

The study is an important first step toward understanding the mechanical properties of and how they travel over the course of the disease, the researchers say. The ultimate goal is developing of metastasis' multi-step process, and thus new therapies to target metastasis.

Explore further: New signaling pathway linked to breast cancer metastasis

Related Stories

New signaling pathway linked to breast cancer metastasis

April 2, 2012
Lymph nodes help to fight off infections by producing immune cells and filtering foreign materials from the body, such as bacteria or cancer cells. Thus, one of the first places that cancer cells are found when they leave ...

Researchers discover protein that could help prevent the spread of cancer

May 4, 2011
A protein capable of halting the spread of breast cancer cells could lead to a therapy for preventing or limiting the spread of the disease.

Crucial molecule that involved in spread of breast cancer found

June 8, 2011
Researchers at Albert Einstein College of Medicine of Yeshiva University have identified a key player in the spread of breast cancer. The findings, published today in the online edition of Nature, identify a critical molecule ...

Recommended for you

Many pelvic tumors in women may have common origin—fallopian tubes

October 17, 2017
Most—and possibly all—ovarian cancers start, not in ovaries, but instead in the fallopian tubes attached to them.

Researchers find novel mechanism of resistance to anti-cancer drugs

October 17, 2017
The targeted anti-cancer therapies cetuximab and panitumumab are mainstays of treatment for advanced colorectal cancer, the second leading cause of cancer-related deaths in the United States. However, many patients have tumors ...

Using artificial intelligence to improve early breast cancer detection

October 17, 2017
Every year 40,000 women die from breast cancer in the U.S. alone. When cancers are found early, they can often be cured. Mammograms are the best test available, but they're still imperfect and often result in false positive ...

Biology of childhood brain tumor subtypes offers clues to precision treatments

October 17, 2017
Researchers investigating pediatric low-grade gliomas (PLGG), the most common type of brain tumor in children, have discovered key biological differences in how mutated genes combine with other genes to drive this childhood ...

New assay may boost targeted treatment of non-Hodgkin lymphoma

October 17, 2017
Diffuse large B-cell lymphoma (DLBCL) is an aggressive cancer and the most frequently diagnosed non-Hodgkin lymphoma worldwide (nearly 40% of cases). Recent advancements indicate that both the prognosis and choice of treatment ...

Bolstering fat cells offers potential new leukemia treatment

October 16, 2017
Killing cancer cells indirectly by powering up fat cells in the bone marrow could help acute myeloid leukemia patients, according to a new study from McMaster University.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.