Tuberculosis is forgotten, but not gone Apr 29, 2009
Biologists call this self-destruct sequence apoptosis, but large amounts of carbon monoxide can shut it down ... We don t yet know how the TB dormancy genes work in humans or what else happens inside the body, Steyn said, but the hypothesis is that if people inhale large amounts of carbon monoxide from cigarettes or indoor air pollution that may shut down apoptosis in those macrophages and induce reactivation of TB.. (Racine Journal Times, WI)
Telik Reports Preclinical Results at AACR Annual Meeting Apr 29, 2009
Inhibition of Aurora kinase activity induces growth arrest and apoptosis in cells and leads to tumor-growth inhibition in xenograft models of human cancer ... These compounds induced growth arrest, polyploidy and apoptosis in human cancer cell lines, such as HCT116 (colon), HL60 (promyelocytic leukemia) and A549 (lung) - reflecting cell lines with intact or defective p53-dependent post-mitotic checkpoints ... The resulting apoptosis or senescence of these cells may depend on their p53 status. (PR Newswire)
Use of Human Milk As Cancer Therapy Apr 28, 2009
This is supported by a study published in 1995 from Lund University in Sweden that showed that human milk could cause cultured cancer cells to undergo programmed cell death, or apoptosis ... While no studies have tested the ability of human milk to stimulate cancer cell apoptosis in human patients, many people that have been diagnosed with cancer are encouraged by these results and choose to use breast milk as a complement or to conventional cancer treatment. (Suite101.com)
New biomarker may predict leukemia aggressiveness Apr 20, 2009
"This implies that if we can develop drugs to block this enzyme, which would raise cAMP and promote apoptosis which is really at the heart of the underlying pathology.". . (EurekAlert!)
Brain metastases hijack neuron-supporting cells to resist chemotherapy Apr 20, 2009
Both drugs induced apoptosis, or programmed cell death. When the cells were collected with astrocytes, cell death dropped to levels seen when there was no drug applied to the cancer cells at all. (EurekAlert!)
Cyclacel Pharmaceuticals Announces Multiple Presentations At American Association of Cancer Research Annual Meeting Apr 16, 2009
Sapacitabine "Synergistic interactions between sapacitabine (CYC682) and inhibitors of either histone deacetylase or methyltransferase in Acute Myeloid Leukemia cell lines" Date/Time: Tuesday, Apr 21, 2009, 1:00 PM - 5:00 PM Mountain Time Abstract Number: 4552 Seliciclib "Targeting the cyclin E-Cdk2 complex represses lung cancer growth by triggering apoptosis and anaphase catastrophe" Date/Time: Tuesday, Apr 21, 2009, 3:40 PM Mountain Time Abstract Number: 4784 "Derivatives of seliciclib with... (Primezone Releases)
New therapeutic target for melanoma identified Apr 16, 2009
(PHILADELPHIA) A protein called Mcl-1 plays a critical role in melanoma cell resistance to a form of apoptosis called anoikis, according to research published this week in Molecular Cancer Research ... The Bcl-2 family includes several prosurvival proteins that are associated with the resistance of cancer cells to apoptosis, or cell death. (EurekAlert!)
Angiotensin-Receptor Blockers for Prevention of Atrial Fibrillation — A Matter of Timing or Target? Apr 16, 2009
2,3,4 Apoptosis and interstitial fibrosis develop over the longer term and are usually irreversible. 2,3,4. (New England Journal of Medicine)
Colon Cancer Shuts Down Receptor That Could Shut It Down Apr 15, 2009
The receptor puts a double-whammy on cancer by sending signals that trigger cell death, or apoptosis, and shutting down a protein that causes inflammation, a precursor to cancer. "We know the receptor is silenced in cancer but it's not like the gene goes away," says Dr. Vadivel Ganapathy, corresponding author and chair of the Department of Biochemistry and Molecular Biology in the MCG School of Medicine. (Science Daily)
For cancer cells, genetics alone is poor indicator for drug response Apr 13, 2009
In order to investigate this disparate behavior among cells, graduate student Sabrina Spencer and postdoctoral researcher Suzanne Gaudet, both in Sorger's lab, looked at a molecule called TRAIL, a protein that causes cells to, literally, commit suicidea process scientists call apoptosis ... "Non-genetic origins of cell-to-cell variability in TRAIL-induced apoptosis". (EurekAlert!)
CSHL-led team identifies key decision-point at which cells with broken DNA repair themselves or die Apr 11, 2009
When cells undergo potentially catastrophic damage, for example as a result of exposure to ionizing radiation, they must make a decision: either to fix the damage or program themselves for death, a process called apoptosis ... D., of the Tonks lab, showed that when Eyes Absent was not present in damaged cells grown in culture, such foci were not formed and the cells went the route of apoptosisthey programmed themselves to die ... When EYA was experimentally "knocked out" via a technique called... (EurekAlert!)
Fibrosis and Myocardial Infarction Apr 9, 2009
The wound, caused by necrosis and apoptosis after coronary-artery occlusion, triggers the healing process, resulting in a strong fibrotic scar and the restoration of pump function. Healing is accomplished through. (New England Journal of Medicine)
Cellular Target May Prove Useful In Treating Deadly Brain Tumors Apr 7, 2009
A constitutively active form of neurokinin 1 receptor and neurokinin 1 receptor-mediated apoptosis in glioblastomas. Journal of Neurochemistry, 2009; DOI. (Science Daily)
alpha-Sarcin catalytic activity is not required for cytotoxicity Apr 4, 2009
This is important since recent studies have cast doubt on whether protein synthesis inhibition is sufficient to initiate apoptosis. Results. (BioMed Central)
Time (and PPAR-beta/delta) Heals All Wounds Mar 30, 2009
But cultured keratinocytes from these mice don't proliferate any faster than normal cells and, in fact, are more susceptible to apoptosis (2). According to Nguan Soon Tan, this discrepancy was the first indication that PPAR / might regulate crosstalk between layers of the skin the epidermal hyperproliferation seen in the knockout mice could be due to faulty signals from the dermal cells. (Science Daily)
Discovery May Result In New Test To Determine Predisposition To Cancer Mar 26, 2009
18, 2005) To identify the best treatment for recurrent ovarian cancer, researchers at Yale School of Medicine are studying a technology called the Yale apoptosis assay in combination with another technology. (Jan. (Science Daily)
Cancer Medication? Potential Tumor Suppressor Identified Mar 25, 2009
When this gene mutates to an oncogene, the cell proliferates excessively and apoptosis is inhibited. Thereby the gene plays a decisive role in the development of many tumors. (Science Daily)
Lung Cancer: Molecular Scissors Determine Therapy Effectiveness Mar 25, 2009
14, 2008) The protein CD95 is known to act as a molecular switch that triggers the apoptosis death program in cells. Scientists have now shown that activation of this switch in glioblastoma has a totally. (Science Daily)
Genetic Mechanism In Mole Rats Can Be Targeted In Cancer Research Mar 24, 2009
In the past it has also been revealed that VEGF (Vascular Endothelial Growth Factor - a major growth factor that regulates the growth of new blood vessels) and p53 (a "master" gene, responsible for activating a battery of other genes engaged in either programmed cell death [apoptosis] or DNA-repair in cells) exhibit a similar mode of action in mole rats and in cancer growths, which is why they are so destructive in human cancer growths, Prof. Avivi pointed out. (Science Daily)
Natural cytotoxic agent against bladder cancer Mar 19, 2009
Comprehensive gene expression analysis confirmed that frankincense oil activates genes that are responsible for cell cycle arrest, cell growth suppression, and apoptosis in J82 cells. However, frankincense oil-induced cell death in J82 cells did not result in DNA fragmentation, a hallmark of apoptosis. (BioMed Central)
Small Molecules Block Cancer Gene Mar 18, 2009
Three of the six worked to induce programmed cell death or apoptosis in breast cancer cell lines. "It induced death in those breast cancer cells that depend for their survival on Stat3," said Tweardy. (Science Daily)
MicroRNA undermines tumor suppression Mar 18, 2009
When Le reduced the amount of miRNA125b in the cells, p53 levels and the number of cells undergoing apoptosis (a type of programmed cell death that can be triggered by p53) both increased, whereas an increase in miRNA125b levels decreased levels of p53 and the number of apoptotic cells ... When she reduced miRNA125b levels in the embryos, cellular p53 levels and apoptosis both increased. (EurekAlert!)
Hepatitis C: Key Molecules That Inhibit Viral Production Identified Mar 17, 2009
Core, the most conserved protein among all HCV genotypes, plays several essential roles in the viral cycle in the host cell; studies have suggested that these core-core or core-other protein interactions can modulate various functions including signaling, apoptosis or programmed cell death, lipid metabolism, and gene transcription. The core protein is particularly important in the assembly of the hepatitis C nucleocapsid, an essential step in the formation of infectious viral particles; the... (Science Daily)
Phylonix granted broad US patent for assessing cardiac functions in zebrafish Mar 16, 2009
"Our panel of zebrafish-based assays will bridge this gap by enabling thorough assessment of cardiotoxicity during early stages of drug development. "This award complements our previously issued patents for assessing angiogenesis, apoptosis, and toxicity in zebrafish, use of high-throughput screening methods, and transplantation of human cells for drug testing and disease modeling," she continued. Advantages of Zebrafish for Assessing Cardiotoxicity The two-chamber zebrafish heart develops... (EurekAlert! -- Business News)
Alzheimer's disease therapeutic prevents long-term damage from TBI in pre-clinical studies Mar 16, 2009
This damage comes from apoptosis, which is a different form of cell death, and can result in large holes in brain tissue that cause lasting neurological effects. To date, there has been no way to prevent or treat this damage, he says. (EurekAlert!)
Why Anesthesia Is Associated With Cognitive Impairment And Risk Of Alzheimer's Disease Mar 13, 2009
1, 2005) In a new study, researchers show that a processed form of tau protein induces neuronal death by apoptosis (programmed cell death) when expressed in cultured rat hippocampal neurons. Pathological. (Science Daily)
Antioxidants In Midwestern Black Raspberries Influenced By Where They Grow Mar 12, 2009
Anthocyanins, a class of flavonoids in black raspberries, inhibited growth and stimulated apoptosis in the esophagus. (May 2, 2002) There is a potentially powerful biological weapon for health -- a mix of compounds suspected of thwarting colon cancer -- hiding deep inside the juicy sweetness of a black raspberry. (Science Daily)
Characterization of STAT3 activation and expression in canine and human osteosarcoma Mar 11, 2009
To examine STAT3 and Src expression in OSA, we performed Western blotting and RT-PCR. OSA cells were treated with either STAT3 siRNA or small molecule Src (SU6656) or STAT3 (LLL3) inhibitors and cell proliferation (CyQUANT), caspase 3/7 activity (ELISA), apoptosis (Western blotting for PARP cleavage) and/or viability (Wst-1) were determined ... In both canine and human OSA cell lines, downregulation of STAT3 activity through inhibition of upstream Src family kinases using SU6656, inhibition of... (BioMed Central)
Veggie diet 'cuts prostate cancer risk' Mar 7, 2009
They may suppress angiogenesis, induction of apoptosis and down-regulation of hormone receptors expression. Overall there is some evidence suggesting that consumption of legumes, including soy and soy products, is protective against CaP.. (India Times, India)
New Clues About Mitochondrial 'Growth Spurts' Mar 5, 2009
Bcl-xL belongs to the Bcl-2 protein family, whose members can protect mitochondria or shatter them to drive apoptosis. Berman et al.'s results suggest that Bcl-xL manages the number, size, and energy-producing capacity of mitochondria long before the cell is faced with a life-or-death decision. (Science Daily)
Inactivity leads to quick muscle loss Mar 3, 2009
During chronic muscle inactivity, he said, a process called autophagy - or type 2 cell death - joins with apoptosis - or type 1 cell death - in attacking cells and causing muscles to shrink. Muscle inactivity leads to big increases in the proteins LC3 and Beclin 1 in the body, O'Leary said. (India Times, India)
Caffeine may kill some skin cancer cells Feb 27, 2009
Adding caffeine seems to stimulate more cells into triggering their suicide sequence (called apoptosis) while only about 1 out every 500 cells will undergo apoptosis when exposed to UV, about 1 out of every 200 do when caffeine enters the picture, Nghiem told LiveScience. By examining the in human cells (for the first time), Nghiem and his colleagues determined that ATR was caffeine's target in the cell. (MSNBC -- Health)
Two sisters at Bartow High among state science fair qualifiers Feb 26, 2009
Pranali won for a biochemistry project titled Characterization of a Biophysics Simulation to Evaluate p53 Apoptosis. Prachiti won for her medicine and health project titled Determination of Amyloid-Beta levels through regulation of Ataxin-1 Pathway. (Lake Wales News, FL)
Revolutionary New Model For Alzheimer's Disease Feb 21, 2009
We believe that Alzheimer s disease is somewhat analogous to cancer, which results from an imbalance between the normal processes that support cell survival and those that cause cell turnover, said Patrick Mehlen, PhD, Director of the Apoptosis, Cancer and Development CNRS Laboratory at the University of Lyon and co-senior author of the study. Our hope is that this research will lead to therapeutics that will be used to address this imbalance much earlier in the disease process. (Science Daily)
* New use found for diabetes medicine Feb 21, 2009
We discovered that the increase of protein 14-3-3E that is related to nuclear receptor PPAR can decrease apoptosis, which is an important mechanism for protecting cells during a stroke, National Health Research Institute president Kenneth Wu (O) said ... This will help protect cells and decrease instances of apoptosis [cell death], Wu said. (Taipei Times, Taiwan -- Sports)
Genentech, Buck Institute research could flip Alzheimers programs Feb 20, 2009
Patrick Mehlen, director of the Apoptosis, Cancer and Development CNRS Laboratory at the and co-senior author of the study, said the Buck-French team believes Alzheimer s is somewhat analogous to cancer, which results from an imbalance between the normal processes that support cell survival and those that cause cell turnover. Our hope is that this research will lead to therapeutics that will be used to address this imablance much earlier in the disease process, Mehlen said in a press release. (Bizjournals.com)
Role of oxidative stress and intracellular glutathione in the sensitivity to apoptosis induced by proteasome inhibitor in thyroid cancer cells Feb 16, 2009
At concentrations that effectively inhibited proteasome activity, bortezomib induced apoptosis in FRO cells, but not in ARO cells ... Furthermore, depletion of GSH increases apoptosis induced by bortezomib, in contrast, repletion of GSH decreases bortezomib-mediated cell death ... GSH protects cells from proteasome inhibition-induced oxidative stress and glutathione-dependent redox system might play an important role in the sensitivity to proteasome inhibition-induced apoptosis. (BioMed Central)
The effect of the dual Src/Abl kinase inhibitor AZD0530 on Philadelphia positive leukaemia cell lines Feb 14, 2009
Cell proliferation, apoptosis, survival and signalling pathways were assessed by dye exclusion, flow cytometry and Western blotting respectively ... AZD0530 specifically inhibited the growth of, and induced apoptosis in CML and Ph+ ALL cells in a dose dependent manner, but showed only marginal effects on Ph- ALL cells. (BioMed Central)
Rapid glycation with D-ribose induces globular amyloid-like aggregations of BSA with high cytotoxicity to SH-SY5Y cells Feb 13, 2009
As observed by Hoechst 33258 staining, 3-(4, 5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) and cell counting kit-8 (CCK-8) assay, lactate dehydrogenase (LDH) activity assay, flow cytometry using Annexin V and Propidium Iodide staining and reactive oxygen species (ROS) measurements, the amyloid-like aggregation of glycated BSA induced apoptosis in the neurotypic cell line SH-SY5Y.. Conclusions. (BioMed Central)
Beginners Luck, or Creative Artists of the First Rank? Epeius Biotechnologies Launches Rexin-G eBook Tutorial Feb 13, 2009
As one watches the artful collapsing of a tumor under the onslaught of the targeted genetic medicine, it is interesting to note that the complex mechanisms of cellular apoptosis, focal necrosis, and anti-angiogenesis were beautifully "translated" by a Native American artist/programmer by visualizing and digitizing time-lapse photography that revealed the collapsing of a pumpkin in a field. Likewise, the interactive booklet is a magical work of electronic storytelling, utilizing video stills,... (PR Newswire)
Inflammation In Colon May Get Doused Before Fueling Cancer Development Feb 11, 2009
Cancer is often characterized as an uncontrolled growth in our bodies, but scientists now say that a natural process of cell death, or "apoptosis," is also critically important in cancer, Turner said ... "We were able to decrease the number of cells that were proliferating in the colon. And we were able to increase the number of cells that were undergoing apoptosis. So the net effect of that is, we were able to maintain almost a normal number of cells.". (Science Daily)
Cell Research Feb 8, 2009
Spanning the journal's scope, these articles highlight the latest within cell growth and differentiation, signal transduction, apoptosis, stem cells, development, immunology, neurosciences, plant cell biology, chromatin modulation, epigenetics and transcription. In three consecutive issues starting from the March 2008 issue, Cell Research presents a series of reviews on the recent advances in many important frontiers of signal transduction in the context of stem cell self-renewal and... (Nature News Service)
Nature Reviews Drug Discovery Feb 8, 2009
Apoptosis, the major form of controlled cell death, has a key role in the pathogenesis of diseases including cancer, inflammation and neurodegenerative disorders. This special focus highlights innovative therapeutic strategies targeting apoptosis and agents in clinical trials, and discusses the challenges in realizing their potential. (Nature News Service)
Nature Immunology Feb 8, 2009
The mechanism by which cytokines suppress Bax activation and eosinophil apoptosis are not well understood. Malter and colleagues pinpoint a function for the peptidyl-prolyl isomerase Pin1 in mediating cytokine-induced suppression of Bax activation. (Nature News Service)
Cancer Gene Therapy Feb 8, 2009
It publishes original laboratory and clinical research papers, case reports and review articles on topics including RNAi approaches, drug resistance, hematopoietic gene transfer, homologous recombination, ribozyme technology, antisense technology, tumor immunotherapy and tumor suppressors,translational research, cancer therapy, gene delivery systems (viral and non-viral), anti-gene therapy (antisense, siRNA ymes), apoptosis; mechanisms and therapies, vaccine development, immunology and... (Nature News Service)
Scattered Light Rapidly Detects Tumor Response To Chemotherapy Feb 7, 2009
Most chemotherapy drugs work by forcing cancer cells to commit cellular suicide, a process known as apoptosis ... "The new technology allowed us to detect the tell-tale signs of apoptosis in human breast cancer cells in as little as 90 minutes," said Adam Wax, associate professor of biomedical engineering and senior member of the research team ... "The fact that the changes in structure appear over two distinct time scales suggests that multiple mechanisms are involved in these early events in... (Science Daily)