CRP is a protein that is made in the liver and secreted systemically during the process of inflammation in response to the inflammatory cytokine IL-6. The blood level of CRP is elevated in patients with infections, inflammatory diseases, some cardiovascular diseases, and malignancies including multiple myeloma (MM). Dr. Qing Yi and Dr. Jing Yang from the M.D. Anderson Cancer Center and colleagues designed a series of studies to investigate whether human CRP might influence the growth and survival of MM tumor cells.
The researchers found that addition of CRP to cell cultures at levels observed in patients with MM promoted myeloma cell proliferation and protected myeloma cells from chemotherapy-induced apoptosis and apoptosis induced by IL-6 withdrawal. The protective influence of CRP was also validated in a mouse model of myeloma.
The researchers went on to investigate the cell signaling pathways underlying CRP-mediated protection of myeloma cells. They demonstrated that CRP enhanced secretion of IL-6; binds activating Fcg receptors; activates PI3K/Akt, ERK, and NF-kB pathways; and inhibits caspase cascade activation induced by chemotherapy drugs. Further, CRP was shown to synergize with IL-6 in protecting myeloma cells from apoptosis.
These results provide strong evidence that CRP is not just a marker for MM but is a critical regulator of myeloma cell survival. “CRP protects myeloma cells from apoptosis induced by chemotherapy drugs and stimulates myeloma cells to secrets more IL-6, which in turn provides additional protection to myeloma from apoptosis and stimulates liver cells to secrete more CRP. Thus, CRP could be a therapeutic target for breaking the vicious circle of myeloma to improve the therapeutic efficacy of currently available treatments,” explains Dr. Yi.
Nancy Wampler | EurekAlert!
Cancer diagnosis: no more needles?
25.05.2018 | Christian-Albrechts-Universität zu Kiel
Less is more? Gene switch for healthy aging found
25.05.2018 | Leibniz-Institut für Alternsforschung - Fritz-Lipmann-Institut e.V. (FLI)
The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.
Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...
A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.
The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
25.05.2018 | Event News
02.05.2018 | Event News
13.04.2018 | Event News
25.05.2018 | Event News
25.05.2018 | Machine Engineering
25.05.2018 | Life Sciences