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Wisconsin scientists grow critical nerve cells

...d that the cells kept veering off toward different cellular destinies. After hundreds of unsuccessful variations of growth factors and morphogens, Li was struck by an idea: Why not apply a chemical known to be necessary for a later stage of neuron development to a much earlier step in the process? The hunch ...

A new mechanism of regulating RNA degradation

...e them amidst the incredibly complex background of cellular machinery. Now, in a paper in the January 28th is...ct with the bait will be pulled out of the pool of cellular proteins. They found that Upf1 grabbed onto Staufen1 (Stau1). Stau1 is a well-known RNA binding pro...

FDA Approves Human Hookworm Vaccine for Phase I Safety Trials

...e them amidst the incredibly complex background of cellular machinery. Now, in a paper in the January 28th is...ct with the bait will be pulled out of the pool of cellular proteins. They found that Upf1 grabbed onto Staufen1 (Stau1). Stau1 is a well-known RNA binding pro...

Enzyme, lost in most mammals, is shown to protect against UV-induced skin cancer

...after excessiveunprotected sunbathing, can lead to cellular death ?recognized assunburn of the skin ?and may c...CPD lesions as the majorintermediate in UV-induced cellular damage leading to non-melanoma skincancer. Importantly, it also suggests that photolyases may besucc...

New, automated tool successfully classifies and relates proteins in unprecedented way

...ork should provide a more thoroughunderstanding of cellular processes that underlie disease."Using this approach to spot a protein cluster could help scientistsidentify a common protein structure that enables those proteins togather in one part of the cell, according to Murphy. Getting thisinformation is crit...

New binding target for oncogenic viral protein

...s, they have evolved mechanisms to override normal cellular replication controls. Simian virus 40 (SV40) accom...cogenic large T antigen. This protein corrupts the cellular checkpoint mechanisms that guard cell division and the transcription, replication and repair of DNA....

Neuronal 'traffic jam' marks early Alzheimer's disease

... sac-like vesicles that are the cargo-carriers for cellular proteins. Goldstein and his colleagues also exami...rexpressed -- those defects cause early failure in cellular transport," he said. "And those failures then stimulate further production of A-beta peptide, which ...

Current human embryonic stem cell lines contaminated UCSD/Salk team finds

...JBC), the Varki grouphas also discovered the exact cellular mechanism by which this occurs. Instudies with on...or Ajit Varki, M.D.,UCSD professor of medicine and cellular & molecular medicine, andco-director of the UCSD Glycobiology Research and Training Center.The r...

Mouse brain cells rapidly recover after Alzheimer's plaques are cleared

...filled with abnormal amounts of different types of cellular parts knownas organelles," Holtzman explains. "Nor...the mouse model to studydisease treatments and the cellular abnormalities caused by theirAlzheimer's-like condition."For example, we'd like to know what's going...

Key molecule in plant photo-protection identified

...filled with abnormal amounts of different types of cellular parts knownas organelles," Holtzman explains. "Nor...the mouse model to studydisease treatments and the cellular abnormalities caused by theirAlzheimer's-like condition."For example, we'd like to know what's going...

Plants, animals share molecular growth mechanisms

...gs, called actin filaments, that are necessary for cellular growth, said Dan Szymanski, agronomy associate pro...x known as Actin Related Protein 2/3 (ARP2/3) is a cellular machine that controls formation of actin filaments, which are important for cell growth and movement...

Researchers Uncover Key Step In Manufacture of Memory Protein

A cellular enzyme appears to play a crucial role in the manufacture of a protein needed for long-term memory, according to a team of researchers led by scientists at the National Institute of Child Health and Human Development of the National Institutes of Heal...

Iron Deficiency Sparks Dramatic Changes In Gene Expression

...utrient, there is a complete reorganization of how cellular processesoccur."The cellular player responsible for the metabolic reprogramming is aprotein called Cth2. Thiele's team found that...

Novel Enzyme Shows Potential As An Anti-HIV Target

...nd virulence. As a retrovirus, HIV uses the host’s cellular machinery—including RNA polymerases, which carry o...pends on a complex interplay between proviral DNA, cellular proteins and transcription factors, and Tat. Unlike most transcription factors, Tat activates transc...

Study finds more than one-third of human genome regulated by RNA

...s may be one of theprincipal players in regulating cellular mechanisms. "It's exciting to see how many genes are regulated by microRNAs. We nowknow that this type of gene control is much more widespread thanpreviously appreciated," says Whitehead Member and MIT professor ofbiology David Bartel.MicroRNAs inte...

NYU researchers simulate molecular biological clock

...s may be one of theprincipal players in regulating cellular mechanisms. "It's exciting to see how many genes are regulated by microRNAs. We nowknow that this type of gene control is much more widespread thanpreviously appreciated," says Whitehead Member and MIT professor ofbiology David Bartel.MicroRNAs inte...

Sea skate experiment sheds light on human cell transport

... do skates do it? Goldstein and Musch learned how cellular channels, or gates, spring into action when skate ...usch also believe the mechanisms that trigger this cellular "release valve" are universal. "We think that vesicle insertion, coupled with phosphorylation, is a...

Clam embryo study shows pollutant mixture adversely affects nerve cell development

...d studied their effects on nerve cellgrowth. "On a cellular level, clam neurons are extremely useful instudyin...famousamong scientists as a model for the study of cellular processes thatare common among all animals, including humans.Reinisch and her colleagues collected s...

Yale Scientists Find MicroRNA Regulates Ras Cancer Gene

...k's basic research in the department of molecular, cellular and developmental biology on the nematode round worms, C. elegans. He found that these worms require let-7 RNA for normal development to occur. Without it, cells do not stop dividing and fail to differentiate into the normal structures of the worm ?i...

Study identifies predictors of HIV drug resistance in patients beginning triple therapy

...d studied their effects on nerve cellgrowth. "On a cellular level, clam neurons are extremely useful instudyin...famousamong scientists as a model for the study of cellular processes thatare common among all animals, including humans.Reinisch and her colleagues collected s...

An HIV Protein Plays a Surprising Role in Gene Activation

...nipulators when it comes to co-opting their host's cellular resources. A great deal of human complexity stems ...response element (TAR). Once bound, Tat recruits a cellular complex called P-TEFb (consisting of two subunits) to the HIV promoter, and enhances RNA polymerase'...

Mouse brain tumors mimic those in human genetic disorder

... studying those tumors has helped usunderstand the cellular events involved in NF1 brain tumordevelopment," says principal investigator David H. Gutmann, M.D.,Ph.D., the Donald O. Schnuck Family Professor of Neurology.The study appears online and will be published in the January 2005issue of the journal Annal...

Spider Venom Could Yield Eco-Friendly Insecticides

... understand the toxins' mechanism of action at the cellular level. Because these toxins do not affect the mammalian nervous system, it may be possible to use them to create environmentally friendly insecticides. Insect pests destroy about 25 percent of the world's crops each year, despite the extensive appli...

Scientists discover the cellular roots of graying hair

... Children’s HospitalBoston say they have found the cellular cause of graying hair whileinvestigating the origi... more interest to theresearchers is the pattern of cellular signals that triggers the deathof pigment stem cells, since melanoma is dangerous for the oppositere...

Fundamental Finding Yields Insight into Stem Cells, Cancer; Opens Door to Drug Discovery

... Children’s HospitalBoston say they have found the cellular cause of graying hair whileinvestigating the origi... more interest to theresearchers is the pattern of cellular signals that triggers the deathof pigment stem cells, since melanoma is dangerous for the oppositere...

Weizmann Institute scientists develop a new approach for directing treatment to metastasized prostate cancer in the bones.

... Children’s HospitalBoston say they have found the cellular cause of graying hair whileinvestigating the origi... more interest to theresearchers is the pattern of cellular signals that triggers the deathof pigment stem cells, since melanoma is dangerous for the oppositere...

Weill Cornell Research Reveals Secrets Of Trafficking Within Cells

...nal process called endocytosis to keep the flow of cellular nutrients and information healthy and strong. It'...der significance to the field. "This is a kind of cellular fine-tuning, and we know that deficits in this fine-tuning can wreak havoc on health," said Dr. Timo...

Critical role in programmed cell death identified

...Nature, demonstrates the role of mitochondria, the cellular power plant, in prompting worm cells to self destruct. These results unify cell death models along the evolutionary spectrum, from simple animal systems to humans. In spite of its name, programmed cell death, or apoptosis, is essential for life; it'...

Taking Aim With Nanoparticle PEBBLEs

... First developed as sensors to explore and monitor cellular processes, PEBBLEs now hold promise for diagnosing and treating cancer, said Raoul Kopelman, who is the Kasimir Fajans Collegiate Professor of Chemistry, Physics and Applied Physics at U-M. At the 229th national meeting of the American Chemical Socie...

UCSD researchers maintain stem cells without contaminated animal feeder layers

...nd chemicals had previously been shown to modulate cellular growth and differentiation in human pancreatic cel...es, with activin A, a protein that participates in cellular growth and differentiation, as well as hormone secretion, finally shown in additional testing to mai...

Alcohol's effects on gene expression in the central nervous system

...ls. The microarray technique provides insight into cellular changes that occur over time with chronic alcohol drinking and repeated withdrawals." Collectively speaking, added McBride, findings presented at the symposium demonstrate the quantitative and qualitative applications of microarrays to studying the ...

MSI releases 'moleculizer' - a new approach to simulation of intracellular biochemical networks

...search article, entitled "Automatic generation of cellular reaction networks with Moleculizer 1.0" (pdf) desc...uter simulations can also aidbiologists in viewing cellular activity over a period of time, bytaking advantage of the power of computers to generate the thousan...

Jumping gene helps explain immune system's abilities

...ects the leftover ones, creating aunique gene (the cellular equivalent of the diner's meal). Snipping outdifferent sections will lead to a different gene, carrying instructionsfor a different protein that will recognize a different antigen, and onand on.This a la carte process, known as V(D)J recombination, i...

UCSD Discovery Shows How Embryonic Stem Cells Perform 'Quality Control' Inspections

...ects the leftover ones, creating aunique gene (the cellular equivalent of the diner's meal). Snipping outdifferent sections will lead to a different gene, carrying instructionsfor a different protein that will recognize a different antigen, and onand on.This a la carte process, known as V(D)J recombination, i...

Scientists document complex genomic events leading to the birth of new genes

...he fragile molecular balance of gene products on a cellular level, ultimately resulting in deleterious phenotypic consequences. If these duplicated genes acquire new functions, however, they may confer a selective advantage to an organism, leading to the rise of lineage-specific genes over evolutionary time. ...

New therapy for HIV/AIDS eliminates needles and excessive toxicity

...ects the leftover ones, creating aunique gene (the cellular equivalent of the diner's meal). Snipping outdifferent sections will lead to a different gene, carrying instructionsfor a different protein that will recognize a different antigen, and onand on.This a la carte process, known as V(D)J recombination, i...

Nano-Probes Allow an Inside Look at Cell Nuclei

...ficking mechanisms. They also hope to target other cellular organelles besides the nucleus, such as mitochondria and Golgi bodies. And because quantum dots emit different colors of light based on their size, they can be used to observe the transfer of material between cells. "We can have two different quantu...

Gene sequencing explains bioremediation 'bug'

...ects the leftover ones, creating aunique gene (the cellular equivalent of the diner's meal). Snipping outdifferent sections will lead to a different gene, carrying instructionsfor a different protein that will recognize a different antigen, and onand on.This a la carte process, known as V(D)J recombination, i...

First real-time view of developing neurons reveals surprises, say Stanford researchers

...sh. Stephen Smith, PhD, professor of molecular and cellular physiology, and graduate student Christopher Niell immobilized a young fish at an age when the nerves first grow from the eye to reach the brain. Then, with the aid of a 6-foot-long laser and some fancy microscopy, the researchers were able to watch ...

Beyond lithium for bipolar disorder

...is known to inhibit the production of an important cellular switch, called inositol monophosphate, so the rese...protein that is an "orphan receptor"--that is, its cellular function in sensing external chemical signals is unknown. The researchers also found that the gene ...

Scientists identify new model Of NK cell development

...t the precursors to NK cells are actually found in cellular nurseries deep inside the body's lymph nodes. The findings, appearing in the Mar. 22 issue of the journal Immunity, may offer clinicians new direction in determining how to manipulate this cell type in enhancing immune responses to cancer. "This st...

The very unexpected life and death of a leukemic cell

.... ### In vivo measurements document the dynamic cellular kinetics of chronic lymphocytic leukemia B cells View the PDF of this article at: https://www.the-jci.org/press/23409.pdf ...

Study of genomic DNA leads to new advances in cancer diagnostics

...ant potential of cells based on the sensitivity of cellular DNA to enzyme digestion. The article by Andrew J. ...cols and methods to treat cancer. Ultimately, the cellular changes that occur during cancer formation affect how the cell interacts with its microenvironment (...

New RNA polymerase discovered in plants

...rsity in St. Louis have discovered an entirely new cellular "machine" in plants that plays a significant role in plant flowering and DNA methylation, a key chemical process essential for an organism's development. A team headed by Craig Pikaard, Ph, D., Washington University professor of biology in Arts &...

New methods of gene delivery using lasers

.... Since it also has the potential to assist in the cellular delivery of other bio-molecules, we are now looking at other cell types to see how widely applicable the method proves to be.?/p> The study is part of a new interdisciplinary initiative funded by SHEFC (Scottish Higher Education Funding Council) ...

The Bacteria's guide to survival

... tugs were already known to regulate apoptosis and cellular response to stress, including mechanical strain on the membrane. Also, a majority of these genes were known to be induced by a family of proteins called mitogen-activated protein kinases, or MAPKs. The researchers showed that blocking MAPKs reduced t...

Examination of internal 'wiring' of yeast, worm, and fly reveals conserved circuits

... the wheel. Similar proteins involved in essential cellular functions are often similar across species. "This ...everal functions suggested to the researchers that cellular processes may work together in a coordinated fashion. In contrast, the team did not find in yeast a...

Scientists discover that host cell lipids facilitate bacterial movement

...cterium multiplies inside the cell and then uses a cellular protein called ActA to stimulate the host cell's actin to form filaments at one end of the bacterium. "As these filaments lengthen, they drive the bacterium through the cell until it reaches the peripheral or outer cell membrane," explains Dr. Frede...

UF Researchers Map Bacterial Proteins That Cause Tooth Loss

...nt to study because they are the foundation of the cellular structure of every living organism, Lamont said. They carry on the day-to-day biology of life, going about their business as enzymes and antibodies. They can also cause disease. “The genes themselves are only important in that they encode the protei...

UCSD team discovers specialized, rare heart stem cells in newborns

...e next research steps with the isl1+ cells will be cellular transplantation in living animals to study their role in endogenous repair after cardiac injury. ...

Scientists solve structure of key protein in innate immune response

...nces liberated from the bacteria and initiates the cellular defense mechanisms. In a report published in the J...eceptor protein to recognize several microbial and cellular products including lipopolysaccharide (LPS), a glycolipid found on the outer membrane of certain bac...

New Treatment Rivals Chemotherapy For Lymphoma, Study Finds

... of cancer treatment - targeted radiotherapy, on a cellular scale. Antibodies coupled to radioactive isotopes specifically seek out, bind to and kill cancerous cells. Provided that you can find something different on the cell surface between normal and cancerous cells; this is not as easy as it sounds. A ne...

Mayo Clinic Researchers Create 'Obedient Virus'; First Step To Use Measles Virus Against Cancer

... Russell. Background Biology Natural viruses are cellular parasites. To reproduce more viruses, they need to...es to enter the target cell and then take over the cellular machinery. When they succeed in doing this, an infection occurs. Viruses are so good at taking over ...

Hirsute Or Hairless? Two Proteins May Spell The Difference

...ate in a proliferation pathway after the number of cellular junctions diminishes. By identifying which molecules are active in specific cell types at specific developmental stages, this study lays the foundation for dissecting the mechanisms that connect two key processes—intercellular remodeling and prolifer...

UCLA launches $20 million stem cell institute to investigate HIV, cancer and neurological disorders

...etics, immunology, ethics, hematology/oncology and cellular biology to collaborate on Proposition 71 research Drawing together experts from fields as diverse as engineering to molecular biology, UCLA officials announced March 16 the formation of the Institute for Stem Cell Biology and Medicine to conduct emb...

Wisconsin researchers identify sleep gene

Zeroing in on the core cellular mechanisms of sleep, researchers at University of Wisconsin Medical School have identified for the first time a single gene mutation that has a powerful effect on the amount of time fruit flies sleep. In its normal state, the Drosophila (fruit fly) ...

HIV vaccine trial breaks ground for future research

...ntly to HIV and a primed immune response, probably cellular or humoral, could have worked with the vaccine and caused a greater ability to resist the virus. For the non-white group, the authors suggest that biological differences in immune response or genetic markers of resistance to infection could have made...

Fleshing out the genome

...everything from energy transport and metabolism to cellular communication. This new ability to rank hypothetical sequences according to their likelihood to encode proteins "will be vital for any further experimentation and, eventually, for predicting biological function," said Eugene Kolker, president and di...

Viral protein influences key cell-signaling pathway

... used gene microarray technology to identify which cellular genes out of 33,000 become either more or less active due to the p12 protein. The researchers found that p12 altered the activity of a variety of genes linked to chemical pathways that control cell signaling, proliferation and death. The p300 gene s...

Liposome finding implies electrical effect on cell development

...enomena may have significant implications for both cellular biology and for nanotechnology. "This finding might not only be important in its application to understanding life processes, but it has a potentially exciting practical application in the fabrication of bionanotubes," he said. Images/video: http://...
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(Date:10/10/2008)...NDIANAPOLIS Investigators from the Herman B Wells...ersity School of Medicine are focusing on a family...decreasing the toxic effects of chemotherapy in ch... help in the development of targeted therapies for...he blood. , The researchers, led by Kristin T. C...
(Date:10/10/2008)...en, Conn. Yale scientists have created nanowire s...ics that are both sensitive and specific enough to..., according to a report in Nano Letters . , The...specific antigens signatures of bacteria, viruses...e activated, they produce acid, and generate a tin...
(Date:10/9/2008)... CLARA, Calif., Oct. 9 /PRNewswire-FirstCall/ -- S...ng developer of human interface,solutions for mobi...vices,announced today that it will report financi... Thursday, October 23, 2008 after the close of mar...nce call for analysts and,investors at 2:00 p.m. P...
(Date:10/9/2008)...s hard being a mussel: you have to worry about hun...ion an environment that can change your body tempe..., "It,s one of the most variable habitats on Ear...n spend part of the day bathed in cool Pacific sea...a sun." , Gracey led the first real-time molecul...
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(Date:10/12/2008)... Birdstep Technology,s high availability embedded ...carrier grade OSE RTOS. , ...Technology (OSE: BIRD) today announced the release...ing system. This is the latest platform to be adde...d platforms., , ,"We recognized the importanc...
(Date:10/11/2008)...ould Not Pose Setback and Expects the 89-Year-Old ... ASHEVILLE, N.C., Oct. 11 /PRNewswire/ -- Evangeli...in Montreat, N.C. upon his release this,afternoon ...g a brief stay.,He was admitted for observation af... late Friday., Mr. Graham,s physicians said that ...
(Date:10/11/2008)...ernational Transcends Cultural Divides, JOHANNESB...frican and,international audiences welcome Bishop ...fying gathering, which for the first time is being...tp://www.newscom.com/cgi-bin/prnh/20081011/CLSA011...off with performances by,South Africa,s own multi-...
(Date:10/10/2008)... those already on drugs, some diagnoses could be w...althDay News) -- A new study questions the commonl...e ( C. difficile ) infections are always preceded ...iversity and the Jewish General Hospital found tha...cquired C. difficile infections before hospitali...
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