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Medicine Science

Scientists Have Found 600 New Cancer Vulnerabilities, Each Could Be the Target of a Drug (bbc.com) 42

An anonymous reader quotes a report from the BBC: Scientists have taken cancer apart piece-by-piece to reveal its weaknesses, and come up with new ideas for treatment. A team at the Wellcome Sanger Institute disabled every genetic instruction, one at a time, inside 30 types of cancer. It has thrown up 600 new cancer vulnerabilities and each could be the target of a drug. Cancer Research UK praised the sheer scale of the study.

The researchers disrupted nearly 20,000 genes in more than 300 lab-grown tumors made from 30 different types of cancer. The results, published in the journal Nature, revealed 6,000 crucial genes which at least one type of cancer needs to survive. Some were unsuitable for developing cancer drugs, as they are also essential in healthy cells. Others are already the target of precision drugs like Herceptin in breast cancer -- the team called this a "sanity check" that proves their method works. And yet more are beyond current science to develop suitable drugs, so the researchers narrowed down a shortlist of 600 potential new targets for drugs to attack.

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Scientists Have Found 600 New Cancer Vulnerabilities, Each Could Be the Target of a Drug

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  • Side effects (Score:5, Insightful)

    by bobstreo ( 1320787 ) on Wednesday April 10, 2019 @10:45PM (#58419204)

    can cause constipation, diarrhea, liver and kidney problems, can cause other cancers. Doh't take if you're allergic or have HEP C or a family history of thyroid cancer.

    Price? $10000 a month, you'll have to take these drugs for the rest of your life.

    XXXOOO, your pharmaceutical company. /s

    • Re:Side effects (Score:5, Informative)

      by fahrbot-bot ( 874524 ) on Wednesday April 10, 2019 @11:13PM (#58419282)

      can cause constipation, diarrhea, liver and kidney problems, can cause other cancers. ...
      Price? $10000 a month, ...

      You jest, but... my wife died [tumblr.com] of a brain tumor (GBM [wikipedia.org]) in 2006, just seven weeks after diagnosis. Her chemotherapy medicine was Temodar [wikipedia.org] and the list price was $11,000 for a one-month supply of pills (several months would normally be needed). She had both my BC/BS and her Optima insurance -- on BC/BS the co-pay was 10% ($1,100) on her Optima it was $40 (yes, forty).

      The instructions cautioned against prolonged handling of the pills and breathing dust from them as that could cause -- wait for it -- cancer.

      • by Anonymous Coward

        Just be mindful that those warnings are legal requirements. It's the equivalent of stating that riding in an ambulance could cause death by car accident. Sure, it could. But it's more likely not, and if you are worried about that, you probably forgot the reason you should go into the ambulance to begin with. in that context, a chemotherapy stating that it COULD cause cancer is not that strange.

      • Sorry for your loss, it sucks. Unfortunately there is no magic pill for cancer, what exists is better than nothing, but nevertheless the chances are rotten especially if treatment starts at a late stage which it usually does for brain tumors. Nobody checks for brain tumors unless there are symptoms indicating something is wrong and by the time you get symptoms you are screwed already.
  • by fahrbot-bot ( 874524 ) on Wednesday April 10, 2019 @11:31PM (#58419302)

    ... usually getting the drug delivered to the cancer w/o killing or severely injuring the patient. Many, many drugs work great in the lab, in a petri dish, etc.. but can't be delivered through the body to the target cancer/tumor cells w/o being broken down by the body or doing damage to the body, etc... It's usually a race between killing the cancer before killing the patient.

    In addition, my understanding is that, radiation therapy works by damaging the DNA of cells as the reproduce -- the ones actually dividing *during* the radiation treatment -- so they will (eventually) no longer be able to reproduce. This is generally effective as cancer cells reproduce faster than regular cells, but regular cells get damaged too -- which is why there are treatment and lifetime limits on radiation therapy.

    All of this is especially difficult with growing children as their cells tend to reproduce faster than in adults, so more damage is done during treatment -- or so I understand.

    Remember Sue... [tumblr.com]

    • It's not hard to kill cells, cancerous or otherwise, on a petri dish, a splash of vodka will do the trick. The next to impossible trick is to kill only cancer cells, while leaving healthy cells intact. Usually best you can do is to preferentially kill cancer cells, but there are a whole lot more normal cells than cancer cells in a body...
  • by steveha ( 103154 ) on Thursday April 11, 2019 @12:25AM (#58419378) Homepage

    A couple of years ago I read about an exciting new approach to treating cancer: DNA nanobots. These are very simple machines made from DNA.

    How simple are they? They are hollow capsules with a hinge and a latch. The one function of the nanobot is to pop the latch open under the correct circumstances.

    (Note: I'm a software developer, not any kind of doctor or scientist, and I'm describing this in my own words based on my own understanding. Apologies if I get anything wrong. Links at the end so you can go to better sources.)

    The latch can be configured to open only when it bumps into a specific protein. For example, a protein only found on the cancer to be treated.

    The idea is that a nano-dose of strong medicine is inserted into the "nanobot" capsules. Each does of medicine is tiny but there are literally trillions of capsules. (That's why they are made out of DNA... no person and no machine can make these, they are self-assembling.) Then the capsules are introduced into the body of the patient. They travel along through the body, bumping into things, and the medicine doesn't do anything because it's contained inside the capsule. Then, when the capsule happens to bump into a cancer cell, the latch opens, the medicine is released, and a nanodose of the medicine is administered directly to the cancer cell.

    What I found exciting about this is that it decouples the problems of being both safe and effective. We have plenty of effective anti-cancer drugs, but many of them are useless because they aren't safe. They aren't selective enough; they will kill healthy tissue as much as they kill cancer cells. But if we can program the latch to open only when near the cancer cells, potentially these same drugs would now become safe to use. The nanobot makes the effective drugs safe.

    The research from the news story identifies many targets. If the latch can be programmed using this new data, potentially the nanobots can be tailored to attack any kind of cancer and not hurt any healthy tissue.

    From time to time I check the news to see if there is anything new about DNA nanobots. The original research I read about has gone silent... I read somewhere that a major drug company had bought the research so maybe it's quietly being developed (and the staggering piles of paperwork quietly started at the FDA).

    Here is the research I originally read about:

    https://www.nextbigfuture.com/2014/12/ido-bachelet-announces-2015-human-trial.html [nextbigfuture.com]

    I didn't find any follow-up about the human trial. I'm wondering whether the treatment worked and the patient was saved.

    https://www.reddit.com/r/askscience/comments/5nck89/what_happened_ido_bachelet_and_leukemia_nanobot/ [reddit.com]

    Here's what appears to be another research team pursuing the same idea.

    https://www.sciencedaily.com/releases/2018/02/180212112000.htm [sciencedaily.com]

  • by Chris Katko ( 2923353 ) on Thursday April 11, 2019 @12:30AM (#58419388)

    Did they at least give cancer early notice before announcing zero-day vulnerabilities to the public at large?

  • Project Zero thanked them for their efforts and promised a fix in the next build.

  • "Scientists Have Found 600 New Cancer Vulnerabilities, Each Could Be the Target of a Drug"

    1. 600 new drugs!
    2....
    3....
    4. PROFIT!!!

    Or, maybe we could avoid getting cancer in the first place.

    Consider: among all the "primitive" indigenous peoples studied by scientists, doctors and other experts in the past three centuries, none of them ever got cancer. None. Period. It was a disease completely unknown to them. Whatever causes cancer, it is something (or several things) that we "civilized" people have been doing

"...a most excellent barbarian ... Genghis Kahn!" -- _Bill And Ted's Excellent Adventure_

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