The anti-inflammatory drug Celebrex, or celecoxib, reduces tumor mass by encouraging cell death and discouraging both cell proliferation and the sprouting of new blood vessels that feed growing tumors, according to a study reported in the November issue of Molecular Cancer Research.
The study, conducted by researchers at the Mayo Clinic College of Medicine in Scottsdale, Ariz., suggests this drug one day might be used to prevent and even treat breast tumors. Celebrex, marketed by Pfizer Inc., is a member of the general family of drugs that target the COX-2, an enzyme that plays a major role in arthritis pain and inflammation. "This COX-2 inhibitor represents a strong option for treatment of breast cancers, and a preventative agent for treatment of individuals with high risk of developing breast cancer or disease relapse," said Pinku Mukherjee, Ph.D., the senior author of the report.
The Mayo study showed that celecoxib caused reduction in mammary gland tumor mass that was associated with increased programmed cell death, or apoptosis, in the breast tissue of the mice. Celecoxib-induced cell death was associated with two molecular events involving pathways that lead to apoptosis. The COX-2 inhibitor increased expression of the Bax protein, which is known to function within the pro-apoptotic cell mechanism. Further, the introduction of celecoxib resulted in reduced activity of an anti-apoptotic protein, Akt, known to promote cell survival.
Russell Vanderboom, Ph.D. | EurekAlert!
Transport of molecular motors into cilia
28.03.2017 | Aarhus University
Asian dust providing key nutrients for California's giant sequoias
28.03.2017 | University of California - Riverside
The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.
To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
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