Keyword: rna

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  • Science Fact Swallows Science Fiction

    01/26/2017 9:48:32 AM PST · by Sean_Anthony · 8 replies
    Canada Free Press ^ | 01/26/17 | Dr. Robert Owens
    I began working in what I call Writing Mode which is where I go when consumed with the writing of a new book Not too long ago, I began a science fiction novel, which has always been a dream of mine, and since I finally broke through the fiction wall last year with my book, America’s Trojan War, I thought it was time. I even had a plot that had been rattling around in my mind for years. I began working in what I call Writing Mode, which is where I go when consumed with the writing of a new...
  • Researchers May Have Solved 'Missing Link' Mystery in Origin of Life

    06/09/2015 8:54:48 AM PDT · by SeekAndFind · 96 replies
    NBC News ^ | 06/09/2015 | by JESSE EMSPAK, LIVE SCIENCE CONTRIBUTOR
    How did life on Earth begin? It's been one of modern biology's greatest mysteries: How did the chemical soup that existed on the early Earth lead to the complex molecules needed to create living, breathing organisms? Now, researchers say they've found the missing link. Between 4.6 billion and 4.0 billion years ago, there was probably no life on Earth. The planet's surface was at first molten and even as it cooled, it was getting pulverized by asteroids and comets. All that existed were simple chemicals. But about 3.8 billion years ago, the bombardment stopped, and life arose. Most scientists think...
  • Telomere extension turns back aging clock in cultured human cells, study finds

    01/23/2015 2:28:53 PM PST · by Red Badger · 15 replies
    medicalxpress.com ^ | Provided by Stanford University Medical Center
    A new procedure can quickly and efficiently increase the length of human telomeres, the protective caps on the ends of chromosomes that are linked to aging and disease, according to scientists at the Stanford University School of Medicine. Treated cells behave as if they are much younger than untreated cells, multiplying with abandon in the laboratory dish rather than stagnating or dying. The procedure, which involves the use of a modified type of RNA, will improve the ability of researchers to generate large numbers of cells for study or drug development, the scientists say. Skin cells with telomeres lengthened by...
  • Former APA Pres. Dr. Cummings Discusses Gay Change,Epigenetics,Neutrinos,& Political Correctness

    03/15/2013 10:43:49 AM PDT · by Maelstorm · 2 replies
    RPVNetwork ^ | March 15, 2013 | F.R Newbrough
    Former APA Pres. Dr. Nicolas Cummings Discusses Gay Change, Epigenetics, Neutrinos, & Political Correctness. - RPVNetwork
  • Researchers make alternatives to DNA and RNA

    04/21/2012 10:34:28 AM PDT · by OldNavyVet · 6 replies
    The Los Angeles Times ^ | 21 April 2012 | Eryn Brown
    DNA and RNA molecules are the basis for all life on Earth, but they don't necessarily have to be the basis for all life everywhere, scientists have shown.
  • You Are What You Eat: Genetically Modified Foods Include “Information”

    02/04/2012 4:00:27 PM PST · by opentalk · 40 replies
    Smart Publications ^ | January 14, 2012 | John Morgenthaler
    Vitamins, minerals, and other nutrients in our foods, we expect. But information? According to recent research from China’s Nanjing University, when people eat rice, tiny sequences of microRNA from the plant-based food can survive the body’s digestive process and end up absorbed in human tissue where — and here’s the reason why we need to know about this study — plant microRNA may actually affect how our cells behave and function. In the study, Exogenous plant MIR168a specifically targets mammalian LDLRAP1: evidence of cross-kingdom regulation by microRNA, published in the Journal Cell Research, the genetic material from rice showed up...
  • A micro-RNA as a key regulator of learning and Alzheimer's disease

    09/23/2011 8:22:09 AM PDT · by decimon · 9 replies
    Scientists identify an RNA molecule as a potential target for new Alzheimer's therapies Göttingen, September 23rd, 2011. Proteins are the molecular machines of the cell. They transport materials, cleave products or transmit signals – and for a long time, they have been a main focus of attention in molecular biology research. In the last two decades, however, another class of critically important molecules has emerged: small RNA molecules, including micro-RNAs. It is now well established that micro-RNAs play a key role in the regulation of cell function."A micro-RNA regulates the production of an estimated 300-400 proteins. This class of molecules...
  • Pssst! Don't tell the creationists, but scientists don't have a clue how life began

    02/28/2011 1:23:34 PM PST · by Abathar · 70 replies
    Scientific American ^ | 2/28/2011 | John Horgan
    Exactly 20 years ago, I wrote an article for Scientific American that, in draft form, had the headline above. My editor nixed it, so we went with something less dramatic: "In the Beginning…: Scientists are having a hard time agreeing on when, where and—most important—how life first emerged on the earth." That editor is gone now, so I get to use my old headline, which is even more apt today. Dennis Overbye just wrote a status report for The New York Times on research into life's origin, based on a conference on the topic at Arizona State University. Geologists, chemists,...
  • Dangerous bacterium hosts genetic remnant of life's distant past (RNA can do)

    08/12/2010 4:22:51 PM PDT · by decimon · 13 replies
    Yale University ^ | August 12, 2010 | Unknown
    Within a dangerous stomach bacterium, Yale University researchers have discovered an ancient but functioning genetic remnant from a time before DNA existed, they report in the August 13 issue of the journal Science. To the surprise of researchers, this RNA complex seems to play a critical role in the ability of the organism to infect human cells, a job carried out almost exclusively by proteins produced from DNA's instruction manual. "What these cells are doing is using ancient RNA technology to control modern gene expression," said Ron Breaker, the Henry Ford II Professor of Molecular, Cellular and Developmental Biology at...
  • MicroRNA Stops Liver Cancer In Mice

    06/16/2009 5:45:34 PM PDT · by grey_whiskers · 16 replies · 529+ views
    Future Pundit ^ | 6-13-2009 | Randall Parker
    A new study suggests that delivering small RNAs, known as microRNAs, to cancer cells could help to stop the disease in its tracks. microRNAs control gene expression and are commonly lost in cancerous tumors. Researchers have shown that replacement of a single microRNA in mice with an extremely aggressive form of liver cancer can be enough to halt their disease, according to a report in the June 12 issue of the journal Cell, a Cell Press publication. Cancer amounts of cells that have damaged programs. Their information state is incorrect. MicroRNAs work naturally in cells to regulate gene expression. Using...
  • Virus has powerful mini-motor to pack up its DNA (be sure to read conclusion!)

    04/28/2009 5:55:41 PM PDT · by GodGunsGuts · 33 replies · 1,843+ views
    Journal of Creation ^ | Jonathan Safarti, Ph.D.
    --snip-- How does the virus manage to assemble this long information molecule at high pressure inside such a small package, especially when the negatively charged phosphate groups repel each other? It has a special packaging motor, more powerful than any molecular motor yet discovered, even those in muscles. Douglas Smith, an assistant professor of physics at UCSD, explained the challenge:
  • Genetic changes outside nuclear DNA suspected to trigger more than half of all cancers

    03/25/2009 11:03:27 PM PDT · by neverdem · 10 replies · 852+ views
    A buildup of chemical bonds on certain cancer-promoting genes, a process known as hypermethylation, is widely known to render cells cancerous by disrupting biological brakes on runaway growth. Now, Johns Hopkins scientists say the reverse process — demethylation — which wipes off those chemical bonds may also trigger more than half of all cancers. One potential consequence of the new research is that demethylating drugs now used to treat some cancers may actually cause new cancers as a side effect. "It's much too early to say for certain, but some patients could be at risk for additional primary tumors, and...
  • Cell Motors Play Together (in symphony)

    03/02/2009 6:48:59 PM PST · by GodGunsGuts · 8 replies · 532+ views
    CEH ^ | Febraury 27, 2009
    Cell Motors Play Together Feb 27, 2009— If one molecular machine by itself is a wonder, what would you think of groups of them playing in concert?  Recent papers and news articles are claiming that’s what happens in living cells: molecular motors coordinate their efforts...
  • Lab-'evolved' Molecules Support Creation

    01/17/2009 3:04:35 PM PST · by GodGunsGuts · 119 replies · 2,019+ views
    ICR ^ | January 17, 2009 | Brian Thomas, M.S.
    Lab-'evolved' Molecules Support Creation by Brian Thomas, M.S. Scientists attempting to demonstrate random evolution in the laboratory have found something entirely different: evidence supporting creation. Gerald Joyce of the Scripps Research Institute coaxed an RNA-like long chain molecule, called R3C, to copy itself. The journal New Scientist stated that Joyce’s “laboratory-born ribonucleic acid (RNA) strand evolves in a test tube.” But it “evolved” only after “Joyce's team created” it. “After further lab tinkering,” Joyce’s colleague Tracy Lincoln “redesigned the molecule” so that it would replicate more effectively.1 What Joyce and his team actually discovered was how difficult it is and...
  • Chemists edge closer to recreating early life

    01/13/2009 10:43:23 PM PST · by gondramB · 79 replies · 1,329+ views
    Chemistry World ^ | 09 January 2009
    A test tube based system of chemicals that exhibit life-like qualities such as indefinite self-replication, mutation, and survival of the fittest, has been created by US scientists. The researchers say their perpetually replicating RNA enzymes take us a step closer to understanding the origins of life on Earth, as well as to how life may one day be synthesised in the lab. ---- 'This is the very end of the line, where chemistry starts turning into biology,' says Joyce. 'It's the first case, other than in biology, of molecular information having been immortalised.'
  • Top 10 Signs Of Evolution In Modern Man

    01/13/2009 8:14:51 PM PST · by cacoethes_resipisco · 31 replies · 970+ views
    Listverse ^ | January 5, 2009
    Through history, as natural selection played its part in the development of modern man, many of the useful functions and parts of the human body become unnecessary. What is most fascinating is that many of these parts of the body still remain in some form so we can see the progress of evolution. This list covers the ten most significant evolutionary changes that have taken place - leaving signs behind them.
  • Artificial molecule evolves in the lab

    01/09/2009 10:46:53 AM PST · by Coyoteman · 66 replies · 1,522+ views
    New Scientist ^ | January 8, 2009 | Ewen Callaway
    A new molecule that performs the essential function of life - self-replication - could shed light on the origin of all living things. If that wasn't enough, the laboratory-born ribonucleic acid (RNA) strand evolves in a test tube to double itself ever more swiftly. "Obviously what we're trying to do is make a biology," says Gerald Joyce, a biochemist at the Scripps Research Institute in La Jolla, California. He hopes to imbue his team's molecule with all the fundamental properties of life: self-replication, evolution, and function. Joyce and colleague Tracey Lincoln made their chemical out of RNA because most researchers...
  • Dignitas Personae

    12/12/2008 12:06:09 PM PST · by annalex · 32 replies · 716+ views
    The Vatican ^ | 12.12.2008 | The Roman Curia
    Regarding the Instruction Dignitas PersonaeAim In recent years, biomedical research has made great strides, opening new possibilities for the treatment of disease, but also giving rise to serious questions which had not been directly treated in the Instruction Donum vitae (22 February 1987).  A new Instruction, which is dated 8 September 2008, the Feast of the Nativity of the Blessed Virgin Mary, seeks to provide some responses to these new bioethical questions, as these have been the focus of expectations and concerns in large sectors of society.  In this way, the Congregation for the Doctrine of the Faith seeks both...
  • Without enzyme, biological reaction essential to life takes 2.3 billion years

    11/16/2008 8:19:06 PM PST · by Maelstorm · 13 replies · 693+ views
    http://www.physorg.com/ ^ | November 11, 2008 | University of North Carolina School of Medicine
    All biological reactions within human cells depend on enzymes. Their power as catalysts enables biological reactions to occur usually in milliseconds. But how slowly would these reactions proceed spontaneously, in the absence of enzymes – minutes, hours, days? And why even pose the question? One scientist who studies these issues is Richard Wolfenden, Ph.D., Alumni Distinguished Professor Biochemistry and Biophysics and Chemistry at the University of North Carolina at Chapel Hill. Wolfenden holds posts in both the School of Medicine and in the College of Arts and Sciences and is a member of the National Academy of Sciences. In 1995,...
  • Engineers Build First-ever Multi-input 'Plug-and-play' Synthetic RNA Device

    10/20/2008 6:03:44 PM PDT · by Soliton · 199+ views
    Science Daily ^ | Oct. 20, 2008
    Engineers from the California Institute of Technology (Caltech) have created a "plug-and-play" synthetic RNA device--a sort of eminently customizable biological computer--that is capable of taking in and responding to more than one biological or environmental signal at a time. In the future, such devices could have a multitude of potential medical applications, including being used as sensors to sniff out tumor cells or determine when to turn modified genes on or off during cancer therapy. A synthetic RNA device is a biological device that uses engineered modular components made of RNA nucleotides to perform a specific function--for instance, to detect...