A report on the work by BCM researchers with fibroblast growth factor receptor 1 appears today in the journal Cancer Cell.
“Since we are manipulating the target gene itself, we can ask, what will happen" If we turn it off, what happens" That recapitulates the effect of a specific drug,” said Dr. David Spencer, professor of immunology at BCM. “By turning the gene on and off at various time points, we can define a ‘susceptibility window’ for that drug, a time in the progression of the disease when the gene would be an appropriate target.”
That therapeutic “window” defines the time when shutting off the gene would also shut down progression of the cancer. Previous studies show that fibroblast growth factor receptor 1 may have a role in initiating prostate cancer, he said. As a result, some companies have developed drugs designed to block the receptor. Spencer’s work looks at what would happen if the receptor is blocked.
In his mouse, he used a synthetic drug that turned the re-engineered fibroblast growth factor receptor on. As the gene product was activated, the prostate gland began dramatic, synchronized changes characteristic of cancer. However, when he withdrew the drug that turned the receptor on, the changes reversed over several weeks until the prostate gland appeared normal.
However, at a certain point, changes in the tissue reach a point of no-return and transform in to a kind of cancer called adenocarcinoma that does not appear to be reversible, although withdrawing the drug can slow the cancer, too.
During this study, Spencer, his graduate student, Victor Acevedo and their colleagues also studied the changes prostate cells undergo while they spread outside the gland and into surrounding tissue. Understanding the events that take place in cells during the transition from normal to cancer can provide important clues about cancer and potential treatments.
From this study, he has identified some of the genes involved in the transition from normal prostate cells within a secretory gland to more migratory, malignant cells outside the gland. Using special gene chips called tumor microarrays, they have also discovered the up regulation or increase in cellular levels of Fzd4, a gene that might prove to be a new marker for human prostate cancer.
“Victor started out looking for a role of fibroblast growth factor receptor 1 in prostate cancer progression and ended up with a new cancer marker and a model for epithelial cell plasticity, rounding out his productive thesis,” Spencer added.
Nanoparticle Exposure Can Awaken Dormant Viruses in the Lungs
16.01.2017 | Helmholtz Zentrum München - Deutsches Forschungszentrum für Gesundheit und Umwelt
Cholera bacteria infect more effectively with a simple twist of shape
13.01.2017 | Princeton University
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).
Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...
Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.
The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...
UMD, NOAA collaboration demonstrates suitability of in-orbit datasets for weather satellite calibration
"Traffic and weather, together on the hour!" blasts your local radio station, while your smartphone knows the weather halfway across the world. A network of...
10.01.2017 | Event News
09.01.2017 | Event News
05.01.2017 | Event News
17.01.2017 | Earth Sciences
17.01.2017 | Machine Engineering
17.01.2017 | Physics and Astronomy