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Australian Scientists Discover Potential Aids Cure

smi.james.th writes "Several sites report that Australian researcher David Harrich and his team have potentially discovered a way to stop HIV becoming AIDS and ultimately cure the disease. From the article: 'What we've actually done is taken a normal virus protein that the virus needs to grow, and we've changed this protein, so that instead of assisting the virus, it actually impedes virus replication and does it quite strongly.' This could potentially hail one of modern medicine's greatest victories."

28 of 232 comments (clear)

  1. Let us celebrate.. by Anonymous Coward · · Score: 5, Funny

    Let us celebrate with a trip to the brothel!

    1. Re:Let us celebrate.. by Cryacin · · Score: 4, Insightful

      Let's all hope for the public's sake that this does not turn out to be another "cure for AIDS", as has been heralded many times over the last decade.

      Besides that, there are plenty of other nasty, nasty diseases that you can catch apart from AIDS, such as Hepatitis C for instance. It would be interesting to see infection rates of other STD's increase if there isn't a fear disease like AIDS out there to promote the use of prophylactics.

      --
      Science advances one funeral at a time- Max Planck
    2. Re:Let us celebrate.. by kilodelta · · Score: 3, Informative

      This isn't so much a cure but it does arm the body with immune cells that are resistant to infection. That's a big deal. You'd still be HIV positive but the disease would never develop into the syndrome.

      They're basically using elements of regenerative medicine here.

    3. Re:Let us celebrate.. by sjames · · Score: 5, Insightful

      Actually, it has the potential to be much better than current treatments though it wouldn't actually be a cure. IF (and as always it's a big if) it really forces HIV to become latent, the patient would have a normal immune system and probably fewer side effects than with current drugs.

      But it wouldn't be a cure, just a very effective lifelong treatment.

    4. Re:Let us celebrate.. by jkflying · · Score: 5, Insightful

      The trouble is that there *have* been a number of cures/vaccines, but HIV mutates so quickly that they were quickly rendered ineffective. HIV can differ significantly even between somebody and the person they were infected by, all depending on how their immune system responds to the infection and what drugs they are given.

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    5. Re:Let us celebrate.. by Anonymous Coward · · Score: 5, Informative

      This in no way arms the body with immune cells that are resistant to infection. This is a virostatic agent, that will stop the virus from replicating inside immune cells. But it does not block free virus from infecting new cells.

    6. Re:Let us celebrate.. by fahrbot-bot · · Score: 3, Insightful

      But it wouldn't be a cure, just a very effective lifelong treatment.

      And probably expensive. Why offer a one-time cure when you can offer a life-time treatment - he said cynically.

      --
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    7. Re:Let us celebrate.. by c0lo · · Score: 4, Insightful

      IF (and as always it's a big if) it really forces HIV to become latent, the patient would still be a host even when having a normal immune system

      FTFY

      --
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    8. Re:Let us celebrate.. by mrbluze · · Score: 4, Informative

      The trouble is that there *have* been a number of cures/vaccines, but HIV mutates so quickly that they were quickly rendered ineffective. HIV can differ significantly even between somebody and the person they were infected by, all depending on how their immune system responds to the infection and what drugs they are given.

      The difference here is that the treatment targets several stages of the HIV "life-cycle". In micribiology targeting a single point of weakness of an organism is relatively quickly circumvented, but targeting many points of weakness has a much more devastating effect.

      --
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    9. Re:Let us celebrate.. by demonlapin · · Score: 3, Interesting

      DNA is a retrovirus. It inserts itself into host DNA. You could eliminate every virus particle from a human and they would not be cured.

  2. Still a long ways to go by Megahard · · Score: 5, Insightful

    Just starting animal trials. Too early to know if it's really going to work.

    --
    I eat only the real part of complex carbohydrates.
    1. Re:Still a long ways to go by mrbluze · · Score: 4, Interesting

      Just starting animal trials. Too early to know if it's really going to work.

      The preliminary results of the animal trials are startlingly good, and in an interview the chief researcher said he believes the approval cycle will be short (ie: less than 5 years) because of the probability that this therapy will pass safety trials etc. We'll have to wait and see of course.

      --
      Do it yourself, because no one else will do it yourself. [beta blockade 10-17 Feb]
  3. Re:This will never get approved by Anonymous Coward · · Score: 5, Informative

    A big contributing factor toward why Australia's medical research is so strong at an international scale is the fact it's often academic and/or ultimately government funded.

    The Australian government doesn't care about big pharma (which doesn't have an especially large presence in AU, relatively speaking) making profits, it cares about better health care for it's people, so they live longer, work longer, and pay more taxes.

  4. Re:This will never get approved by mandginguero · · Score: 4, Insightful

    It doesn't matter if it isn't approved. If there is a mechanism published in the science literature to treat the disease, someone will be able to experiment with it in another country. Think about some of the African/Asian countries who have said to hell with Western patents on drug formulas and make their own. If a country can produce these compounds then they most likely have the means to run clinical trials.

    --
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  5. Re:This will never get approved by Suhas · · Score: 4, Informative

    Cancer is not one disease but many many diseases under the same banner. In fact, the same type of cancer can be completely different diseases in different people.
    See here.
    I would suggest you refrain from making idiotic remarks about subjects you have no clue about.

  6. Re:This will never get approved by reverseengineer · · Score: 5, Interesting

    This would be a gene therapy treatment- using viral vector to express a mutant protein in your cells. Last year, the European Medicines Agency approved a gene therapy treatment for the first time (no approvals in the US currently). Glybera is indicated for lipoprotein lipase deficiency, a rare disorder that affects fatty acid metabolism. Glybera uses a viral vector to deliver a working copy of the LPL gene to cells; this proposed AIDS treatment would deliver a nonworking copy of TAT to infected cells in a similar fashion. I bring up Glybera for comparison purposes because it is expected to cost over 1 million dollars a patient for a course of treatment. Eventually, gene therapy may become such a routine way of creating treatments that costs will be very low. That is not the present situation.

    --
    "FDA staff reviewers expressed concern about the number of patients who were left out of the study because they died."
  7. Re:question on the cure by reverseengineer · · Score: 5, Informative

    Gene therapy, in short. They would infect you with a virus (probably a retrovirus, ironically enough) that carries a mutant copy of the HIV-1 Tat gene. Normal Tat is a gene that drastically increases HIV production. HIV hijacks the machinery of human T-cells to make copies of its own genes. The protein that Tat codes for has a nasty trick- it binds to transcription factors in your cells and and increases their output- more HIV production, which includes more Tat production, which causes more HIV production, and the disease explosively progresses. It is thought that reaching a critical mass of Tat is a key element in the transition from HIV infection to AIDS. But if you had a mutant Tat that counteracted this activity, HIV production would only occur at a baseline rate- you'd never get that Tat-HIV-Tat positive feedback.

    Here's the article abstract which has some of the technical details. MLV is the murine (mouse) leukemia virus.

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    "FDA staff reviewers expressed concern about the number of patients who were left out of the study because they died."
  8. Re:This will never get approved by sFurbo · · Score: 5, Insightful

    As a business why would I want to cure a person when I can keep making money by offering lifetime treatments?. That's just how it is with big Pharma, most intelligent people know this.

    Big Pharma is actually more than one company, and company A doesn't care whether their cure for disease X makes the treatment of company B irrelevant.

    If they started actually curing everything, their profits would fall and the markets would tank.

    Because people can only get cancer once, and old people are not a better stream of revenue than young people, because Alzheimer medicine is not expensive.

  9. Re:This will never get approved by mjwx · · Score: 5, Informative

    A big contributing factor toward why Australia's medical research is so strong at an international scale is the fact it's often academic and/or ultimately government funded.

    The Australian government doesn't care about big pharma (which doesn't have an especially large presence in AU, relatively speaking) making profits, it cares about better health care for it's people, so they live longer, work longer, and pay more taxes.

    Big Pharma are around, I used to work next to the Pfizer factory in Perth but they have three huge hindrances in Australia.

    1. They aren't allowed to advertise prescription medicine.
    2. They aren't allowed to offer payola to doctors for using their drugs. Both the doctor and the company get busted if they get caught.
    3. Generics are readily available. Instead of buying Panadol (Tylanol) I can get Brand X paracetamol/codeine which is the same recipe but 1/4 the price. The same is true for most prescription drugs.

    --
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  10. Re:This will never get approved by TubeSteak · · Score: 4, Interesting

    1. They aren't allowed to advertise prescription medicine.
    2. They aren't allowed to offer payola to doctors for using their drugs. Both the doctor and the company get busted if they get caught.

    You've just described the developed world... except for the USA and New Zealand.
    Everyone else has strong limitations on direct-to-consumer-advertising, or an outright ban.

    3. Generics are readily available. Instead of buying Panadol (Tylanol) I can get Brand X paracetamol/codeine which is the same recipe but 1/4 the price. The same is true for most prescription drugs.

    As it turns out, generics aren't necessarily equivalent to the original perscription drug.
    Since it's late, you get the first article I found on Google
    It's a fair representation of the other articles I've read on the subject.

    The TLDR version is that generics don't always make the same amount of drug available to the patient
    and even if they do, the drug may not be released in the same fashion, leading to early or late peaks of the drug.

    --
    [Fuck Beta]
    o0t!
  11. Re:This will never get approved by wvmarle · · Score: 4, Insightful

    Healthy people do not just pay more taxes (which is a nice side effect, but then far from everyone pays taxes), they cost a lot less in the long run on health care. Which is the main reason many governments try to stop people from smoking, for example. And which is one of the reasons they promote sports and general exercise.

  12. Re:This will never get approved by Anonymous Coward · · Score: 3, Insightful

    Actually AFAIK, in order for a drug to be a generic variant of the originator, it has to be within the specified limits of it's bioavailability. In other words, the generic drug has to be bioequivalent to the originator's, meaning the amount that gets into the blood stream and the peak time need to be nearly the same. Otherwise the drug won't be aproved as a generic drug by FDA, EMA (or any other org.) and one would have to make clinical trials (which as you probably know cost a LOT) in order to be able to sell it.

  13. Re:BUT YOU DON'T GET IT! by Anonymous Coward · · Score: 3, Informative

    Um... Doesn't that WP article actually prove you wrong while corroborating just about everything the GP said?

    From the linked FA in your own post:

    Schmidt, an only child, was born on February 24, 1967, in Missoula, Montana, where his father Dana C. Schmidt was a fisheries biologist. When he was 13, his family relocated to Anchorage, Alaska.

    Schmidt attended Bartlett High School in Anchorage, Alaska, and graduated in 1985. He has said that he wanted to be a meteorologist "since I was about five-years-old" but "... I did some work at the USA National Weather Service up in Anchorage and didn't enjoy it very much. It was less scientific, not as exciting as I thought it would be—there was a lot of routine. But I guess I was just a little naive about what being a meteorologist meant." His decision to study astronomy, which he had seen as "a minor pastime", was made just before he enrolled at university. He earned his BS (Physics) and BS (Astronomy) from the University of Arizona in 1989. He received his MA (Astronomy) in 1992 and then PhD (Astronomy) in 1993 from Harvard University. Schmidt's PhD thesis was supervised by Robert Kirshner and used Type II Supernovae to measure the Hubble Constant.

    At Harvard, he met his future wife, the Australian (Jenny) Jennifer M. Gordon who was a PhD student in economics. In 1994, he moved to Australia.

    So, Australian citizenship or not (I assume he has it by now), it's kind of a stretch to accurately describe the guy as Australian.

  14. Re:This will never get approved by AmiMoJo · · Score: 5, Interesting

    Protip: Medicines with the same Product License Number are the same. The number has to be printed on the packaging. If you compare various over-the-counter painkillers, for example, you will find that the cheap own-brand ones, the branded ones, the fast actions ones, the long lasting ones and the premium max strength ones all have the same Product License Number and are in fact exactly the same.

    --
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  15. Re:question on the cure by reverseengineer · · Score: 3, Interesting

    I can't say for certain without full access to the paper, but based on the use of a retroviral vector and Dr. Harrich's comments in the video interview, I think the idea would be to infect a population of your hematopoietic stem cells with retroviruses that carry the Nullbasic (mutant copy of Tat) gene. That procedure would be similar to the autologous HSC transplants used in treatment of some leukemias and lymphomas- but then they'd infect the HSCs with the retroviral vector before they put them back in you.

    Upon successful infection, the RNA genome of the vector is converted via reverse transcriptase to a DNA sequence. The vector will also produce some enzymes that will integrate the Nullbasic-DNA gene into the DNA genome of your stem cells. If successful, those cells will now produce Nullbasic protein. Since they are stem cells, they will produce Nullbasic-positive blood cells, some of which will be the CD4+ T-cells that HIV infects.

    HIV will still infect these cells, inject its RNA genome into the cell, which will be converted to DNA, integrated into the host cell genome, transcribed back to RNA, then translated to viral proteins by the cell's machinery. However, the host cell also makes Nullbasic protein, which act like HIV's Tat, and will interact with the same enzymes, transcription factors, etc., but instead of boosting their functions, it will inhibit them. In theory, HIV would reproduce so slowly in your population of Nullbasic+ T-cells that it simply wouldn't be a disease- the population would never fall to the point of causing immunodeficiency.

    The phrase, "in theory" could also apply to most of the other steps I outlined above, of course.

    --
    "FDA staff reviewers expressed concern about the number of patients who were left out of the study because they died."
  16. Re:HIV is not the cause of 'AIDS' by Anonymous Coward · · Score: 3, Informative

    Haha, Oh my days.

    As a doctor in the UK who has worked in the largest centre for HIV in Europe (Chelsea and Westminster hospital, at the GUM/infectious diseases centre there) I can tell you that fewer people are dying of AIDS for the exact reason you mock, drugs are saving their lives. These aren't wonder drugs, and they aren't nice drugs for your body in many ways, but they do work well.

    Here's a great page describing the HAART and modified HAART regimes that we mostly use nowadays http://emedicine.medscape.com/article/1533218-overview

    To give you an idea of how effective these treatments are life expectancy in someone newly diagnosed with HIV with a high CD4 count in the UK is now expected to be only one year less than if they had not been infected. Not that that means their life will be easy, the drugs have a lot of side effects and they will often be very ill for a long time before they die, and the drugs cost a lot, but they will live.

  17. Re:Children will no longer need to be circumcised. by Xenkar · · Score: 3, Insightful

    I'm pretty sure those trials were ended early and the lower infection rate was mostly due to guys not engaging in sexual activities while they healed from the procedure. Afterwards they probably also noticed their sexual pleasure being reduced as the foreskin has a great deal of nerves and protects the head of the penis.

    I never knew the greatness of foreskin due to doctors and my parents decided something that should have been left up to me to decide, but these guys will probably regret their decision.

    So what's wrong with the tried and true method of not engaging in sexual activities with everything that moves?

  18. Re:This will never get approved by stymy · · Score: 3, Informative

    Actually, not all of what you said is true. Most of the costs associated with health care are incurred at the end of a person's life, and things like retirement homes, long stays at hospitals, and whatnot cost a fortune in the first world. Tobacco taxes cost the NHS about 5 billion pounds a year (source:http://news.bbc.co.uk/2/hi/health/8086142.stm), while tobacco taxes bring in over 12 billion pounds a year (source:http://www.the-tma.org.uk/tma-publications-research/facts-figures/tax-revenue-from-tobacco/). The truth is that smokers die young and pay thousands of dollars a year in taxes, so they actually subsidize healthcare for other people. Governments promote health because that's one of the purposes of governments, and healthy people are more productive, but unhealthy people come cheaper for socialized healthcare and social insurance, such as government pensions.