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Google Supercomputers Tackle Giant Drug-Interaction Data Crunch

ananyo writes "By analysing the chemical structure of a drug, researchers can see if it is likely to bind to, or 'dock' with, a biological target such as a protein. Researchers have now unveiled a computational effort that used Google's supercomputers to assesses billions of potential dockings on the basis of drug and protein information held in public databases. The effort will help researchers to find potentially toxic side effects and to predict how and where a compound might work in the body. 'It's the largest computational docking ever done by mankind,' says Timothy Cardozo, a pharmacologist at New York University's Langone Medical Center, who presented the project at the US National Institutes of Health's High Risk–High Reward Symposium in Bethesda, Maryland. The result, a website called Drugable, is still in testing, but it will eventually be available for free, allowing researchers to predict how and where a compound might work in the body, purely on the basis of chemical structure."

9 of 50 comments (clear)

  1. Which supercomputer? by gentryx · · Score: 2

    TFA is light on the technical details, so I wonder if they've really been using a supercomputer or rather "a giant heap of ordinary computers". IIRC Google has more of the latter and fewer of the former.

    --
    Computer simulation made easy -- LibGeoDecomp
    1. Re:Which supercomputer? by su5so10 · · Score: 2

      > IIRC Google has more of the latter and fewer of the former.

      Yes, you are correct. More details here:

      http://research.google.com/university/exacycle_program.html

      "The best projects will have a very high number of independent work units, a high CPU to I/O ratio, and no inter-process communication (commonly described as Embarrassingly or Pleasantly Parallel). The higher the CPU to I/O rate, the better the match with the system. Programs must be developed in C/C++ and compiled via Native Client. Awardees will be able to consult an on-site engineering team."

      Native Client: http://en.wikipedia.org/wiki/Google_Native_Client

    2. Re:Which supercomputer? by buchner.johannes · · Score: 2

      they could use BOINC too -- its the largest supercomputer on earth :)

      --
      NB: The message above might reflect my opinion right now, but not necessarily tomorrow or next year.
    3. Re:Which supercomputer? by pepty · · Score: 2

      Garbage in, garbage out. The architecture of the computer doesn't matter much if the forcefield (the set of equations used to model the interaction between the atoms in the drug, the atoms in the protein, and the atoms in the environment) isn't accurate enough. So far they aren't. This set up seems to have found the known and several putative binding sites for clozapine, but the article doesn't say anything about false positives/false negatives it reported. The setup also pre-selects the binding sites to be studied, which makes me think it would miss a lot of interactions that happen elsewhere on the proteins. The article also points out that Pharma companies have been doing the same type of calculations for years, just on fewer drugs. Pharma haven't managed to create in silico predictions of pre clinical trials yet, let alone clinical trials. This is work worth doing, but like Folding At Home the results are easy to over-hype.

    4. Re:Which supercomputer? by eulernet · · Score: 2

      The fastest supercomputer (http://en.wikipedia.org/wiki/Tianhe-2) runs at 33.86 petaflops, while Boinc currently runs at 8.26 petaflops (http://boincstats.com/en/stats/-1/project/detail).

      3 years ago, Google's computers were used to solve Rubik's cube:
      http://cube20.org/

      We can suppose that combined Google servers are above 33Pflops.

  2. Re:The real important questions by ColdWetDog · · Score: 3, Informative

    I see nobody asked the real important questions.

    Are they also checking if you can get high from a substance?
    Is somebody going to leak that list?

    No need to do that. The Federal Government has gone to great expense and trouble to compile this exhaustive list of drugs that can get all the blinky lights in your brain going.

    --
    Faster! Faster! Faster would be better!
  3. The Oracle by TapeCutter · · Score: 3, Insightful

    Watson is planning to sit for his US medical license soon, next year IBM will be renting "instances" of Watson to independent developers. Since it beat the human Jeopardy champs a couple of years ago Watson has shrunk from 20 tons (including air-con) to a 50kg "beer fridge" running Linux, and it's also 2.6 times faster.

    These machines are what IBM calls "cognitive computing", they can find answers in data that we didn't know were there. In Watsons case the data is general knowledge (AKA common sense), in this case the data is biomedical. There are lots of video's on you tube about Watson but most are cheesy IBM "what we can do for you" infomercials, the talks from the actual developers and the Jeopardy stunt are worth watching.

    I know I keep banging on about IBM's Watson in my posts, and although I contracted to them in the 90's I'm not a shill, I'm a degree qualified computer scientist with 20+ yrs as a commercial developer. I was born the year after sputnik was launched, the technological and scientific progress in my lifetime is unparalleled in human history. I really believe that the "AI" developments we are seeing with HPC today are a revolution like none before, machines that are "smarter" than their creators. It already to the point that no major (physical) engineering project is conducted without the aid of computer models, in fact it's basically impossible to design a modern cpu with first having a modern cpu.

    The ancient myth of the Oracle has come to life as a flat screen monitor, it will change everything in a single generation, hopefully in a good way.

    --
    And did you exchange a walk on part in the war for a lead role in a cage? - Pink Floyd.
    1. Re: The Oracle by DigiShaman · · Score: 2

      Oh, it will change everything all right. But not for the better. It will be used as a tool by man against mankind . It will be a tool of oppression by the oppressors.

      Watson will be used as a tool like any other. Just look how our advanced tools are being used against us! Be it political divide and conquer, oppression, tyranny, or war; man is his own worst enemy!

      --
      Life is not for the lazy.
  4. For the Results of an Experimental Approach by Streetlight · · Score: 2

    take a look at the article in Chemical and Engineering News (C&EN), Nov. 25, 2013, page 7, about a relatively small molecule that interacts with a mutant protein associated with cancer. A very nice x-ray structure is shown with the inhibiting molecule covalently bonded to the protein. The NIH is putting up $10 to further this kind of work. On page 9 of the same issue is another interesting article regarding experimental cancer work and the effect of bacteria in the gut on chemotherapy effectiveness. C&EN should be available in most university libraries.

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    In a time of universal deceit, telling the truth is a revolutionary act. George Orwell