Mouse model for mesothelioma reproduces human disease

March 10, 2008

Scientists have established a mouse model for human malignant mesothelioma (MM) that will provide valuable insight into cancer development and progression along with new directions for design of therapeutic strategies. The research, published by Cell Press in the March issue of Cancer Cell, may eventually lead to a substantially improved outlook for patients with this devastating disease.

MM is an aggressive cancer originating from the mesothelial lining of the pleural cavity. MM is associated with asbestos exposure and is characterized by a long latency period between exposure and disease onset. Chemotherapy can sometimes lead to improvement of overall survival but there is no cure for MM and patients often succumb from the disease within a year of diagnosis. “There is an urgent need for experimental models of MM that can be used to not only study the onset and progression of the disease, but also to serve as a model to select new combination therapies and targeted agents,” says study leader, Dr. Anton Berns, from The Netherlands Cancer Institute.

In humans, MM has been associated with genetic lesions that result in the loss of Neurofibromatosis type 2 (NF2) and genetic lesions affecting RB and P53 pathways. Dr. Berns’ team investigated whether a range of conditional single or compound mutations in the Nf2, p53 and Rb pathways within the mesothelial lining of the thoracic cavity would cause MM in mice.

The researchers found that the vast majority of mice with conditional Nf2;Ink4a/Arf and Nf2;p53 mutations developed MM after a short latency period. The mouse MM tumors, which could be followed noninvasively through the use of bioluminescence imaging, closely resembled human MM. Interestingly, Nf2;Ink4a/Arf knockout mice had a more invasive cancer when compared with Nf2;p53 knockout mice. The researchers went on to show that the loss of Ink4a makes a substantial contribution to the poor clinical outcome of murine MM.

These results describe an excellent model system for investigating the molecular mechanisms that underlie MM. “Our mouse models should be suitable to further dissect pathways critically important in mesothelioma development and progression and serve as invaluable tools to test new intervention strategies,” concludes Dr. Berns. “We have also derived a series of cell lines that reproduce the disease when grafted into the thoracic cavity. These may also facilitate design of better MM therapies.”

Source: Cell Press

Explore further: Researchers solve mystery of how AkT 'moves' from cytosol to cell membrane

Related Stories

Transforming living cells into tiny lasers

July 28, 2015

In the last few decades, lasers have become an important part of our lives, with applications ranging from laser pointers and CD players to medical and research uses. Lasers typically have a very well-defined direction of ...

Recommended for you

Machine Translates Thoughts into Speech in Real Time

December 21, 2009

(PhysOrg.com) -- By implanting an electrode into the brain of a person with locked-in syndrome, scientists have demonstrated how to wirelessly transmit neural signals to a speech synthesizer. The "thought-to-speech" process ...

Quantum Theory May Explain Wishful Thinking

April 14, 2009

(PhysOrg.com) -- Humans don’t always make the most rational decisions. As studies have shown, even when logic and reasoning point in one direction, sometimes we chose the opposite route, motivated by personal bias or simply ...

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.