Tag Archives: cloud

Breakthrough solves centuries-old animal evolution mystery

Using a method called CEL-Seq that can spy on the activity of every gene within a cell at once, Technion Associate Professor Itai Yanai and his colleagues now provide compelling evidence that the layer called the endoderm evolved first, followed by the ectoderm layer and finally the mesoderm layer. Yanai has other big plans for CEL-Seq. “We applied this unbelievably powerful tool to figuring out the evolution of the germ layers, a 19th century problem, but it will also be useful in things like cutting-edge cancer research as well,” he said. …

Pathway that degrades holiday turkey fuels metastasis of triple negative breast cancer

“I’m not saying that people with metastatic breast cancer shouldn’t eat turkey during the holidays, but triple-negative breast cancer appears to have found a way to process tryptophan more quickly, equipping cancer cells to survive while in circulation, which allows them to metastasize,” says Thomas Rogers, the paper’s first author and PhD candidate in the laboratory of CU Cancer Center investigator, Jennifer Richer, PhD. When healthy cells become detached from the foundation on which they grow, they are programmed to undergo cell death through a process known as anoikis (“without a home” in Greek). This means that in order to metastasize, cancer cells have to evade anoikis — they have to survive while in suspension, unattached from a foundation. …

New drug combination for advanced breast cancer delays disease progression

The trial enrolled 118 post-menopausal women with metastatic hormone-receptor-positive breast cancer whose cancer continued to progress after being treated with an aromatase inhibitor. The study, based on work done by Doris Germain of Mt. Sinai Hospital, found that the combination of the drugs bortezomib and fulvestrant — versus fulvestrant alone — doubled the rate of survival at 12 months and reduced the chance of cancer progression overall. Bortezomib, used most commonly in treating multiple myeloma, is a proteasome inhibitor that prevents cancer cells from clearing toxic material…

Testing for drug-resistant bacteria before prostate biopsy can reduce infections — ScienceDaily

For patients undergoing transrectal ultrasound (TRUS)-guided biopsies, Ciprofloxacin may not be the best prophylactic option to use for patients colonized with Ciprofloxacin-resistant E. coli. “Aware of the increasing number of resistant strains of E. coli, our urologic physicians sought to decrease the number of post-biopsy infections and readmissions by conducting cultures on patient fecal samples to identify antibiotic-resistant strains before the biopsy is done, and the results were used to make the best antibiotic choice for prophylaxis,” said Leonard Mermel, D.O., medical director of the department of epidemiology and infection control at Rhode Island Hospital…

Genes that cause pancreatic cancer identified by new tool: Screening system in mice spots cancerous changes invisible to sequencing

The technique works by introducing sections of DNA called piggyBac transposons into the mouse genome. Transposons jump around within the genome, reinserting themselves at random and causing a different mutation in each cell of the mouse. This triggers cancer development, and tracking the transposon�s fingerprints in the tumours allows discovery of the affected cancer-causing genes. The PiggyBac tool was engineered for the first time to allow cancer induction in individual tissues within the mouse, and the method can now be used to study any type of cancer. …

Platinum agent combination treatment for triple-negative breast cancer well tolerated in phase II clinical trial

Triple-negative breast cancer is characterized by the absence of estrogen and progesterone receptors and the HER2/neu protein in breast cancer cells. That in itself presents a challenge in treating the disease, as it does not respond to hormonal- or HER2-targeted therapies that provide for positive outcomes in other subtypes of breast cancer. …

Increased use of hypofractionated whole-breast irradiation for patients with early-stage breast cancer

An analysis of randomized trials demonstrated that patients with early-stage breast cancer who are treated with breast-conserving surgery and adjuvant whole-breast irradiation have improved survival and a lower risk of tumor recurrence compared to patients who are not treated with radiation therapy. Patients are commonly treated with CF-WBI; however, several recent randomized trials[2-5] have confirmed that patients treated with HF-WBI have similar disease-free and overall survival rates as those treated with CF-WBI. CF-WBI delivers a total dose of 45-50 Gy in 25-28 daily fractions of 1.8-2.0 Gy over five to six weeks, while HF-WBI uses a shorter treatment course and a lower total dose and number of fractions, delivering a total dose of 39-42.5 Gy in 13-16 daily fractions of 2.5-3.2 Gy over three to five weeks. …

Smoking still causes large proportion of cancer deaths in the United States

More than 30 years ago, a groundbreaking analysis by famed British researchers, Richard Doll and Richard Peto, calculated that 30 percent of all cancer deaths in the United States were caused by smoking. Since that time, no new estimate of this percentage has been published in the scientific literature. …

Brain tumor: Key found for suppression of growth in medulloblastomas

Medulloblastoma is the most common brain tumor in children, and its treatment remains inefficient. The work of a team of researchers led by Luca Tiberi and Pierre Vanderhaeghen (Universit� libre de Bruxelles (ULB), WELBIO, IRIBHM and ULB Neuroscience Institute (UNI)) opens new perspectives on the diagnosis and treatment of these brain tumors…