The cells long have been believed to be the only naturally occurring pluripotent cells. (Under the right conditions, pluripotent cells can become any other cell in the body.) But some people object to the fact that the embryo is destroyed during their isolation…
This finding, published in Cancer Research, a journal of the American Association for Cancer Research (AACR), may be used to develop therapeutic treatments for patients. "Our research has shown that HGMA2 plays a part in regulating the spread of cancer and could be considered a driver of the process," said Dr. Chada, who was principal investigator of the study. "Further studies could result in the development of therapeutic treatments for patients with breast cancer which could prevent HGMA2’s function, reduce the spread of cancer and extend a patient’s life." According to Dr…
"Scientists have known that Bmi1 is a central control switch within the adult stem cells of many tissues, including the brain, blood, lung and mammary gland," said Ophir Klein, MD, PhD, who directs the Craniofacial and Mesenchymal Biology (CMB) Program and serves as chair of the Division of Craniofacial Anomalies at UCSF. "Bmi1 also is a cancer-causing gene that becomes reactivated in cancer cells." Klein’s research group now has shown that BMI1 plays another role in ensuring that the process of development unfolds normally. The hallmarks of all stem cells are that they are immature, they keep dividing to replenish their numbers almost indefinitely, and they generate new specialized cells to function in the tissues in which they reside, a process called cell differentiation. …
This machinery, the proteasome, is deregulated in cancer. Agents called protease inhibitors are viewed as potential anti-cancer therapies, but they indiscriminately curb proteasome activity, which also includes protein recycling. Such strategy is effective to kill cells in aggressive blood cancers but leads to drug resistance and excessive toxicity in solid tumors. Fine-tuning The new strategy may change that…
Many different types of cells in our body can crawl and migrate to distinct locations, sometimes over long distances. Immune system cells, for example, move to a wound site to kill microorganisms during an infection, and connective tissue cells (fibroblasts) move there to repair damaged areas. …
"Even outside these specific findings with cancer, what we’re saying is that flavonoids are active and not always in good or even predictable ways," says Steven K. …
The concept involves using nanoparticles made of "weak polybases," compounds that expand when transported into environments mimicking tumor cells, which have a higher acidity than surrounding tissues. …
In a new paper appearing today online in the journal, ACS Medicinal Chemistry Letters, researchers at Sanford-Burnham Medical Research Institute have developed nanoparticles that appear to solve a big challenge in delivering the RNA molecules, called small interfering RNA, or siRNA, to the cells where they are needed. By synthesizing a nanoparticle that releases its siRNA cargo only after it enters targeted cells, Dr…
Reported on-line today in the journals Cell and Cell Stem Cell, the two papers demonstrate in mouse models that miR-22 drives both the onset and spread of breast cancer, as well as the onset of blood cancer. …
source : http://www.foxnews.com/health/2013/07/03/hot-temps-likely-not-tied-to-heart-birth-defects/