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Two Women Found With HIV-Immune Mutant Gene
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samzenpus
on Wed Oct 06, 2004 09:10 PM
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German Doctor Cures an HIV Patient With a Bone Marrow Transplant 639 comments
reporter writes "HIV is the virus that causes Acquired Immune Deficiency Syndrome (AIDS). Until now, HIV has no cure and has led to the deaths of over 25 million people. However, a possible cure has appeared. Dr. Gero Hutter, a brilliant physician in Germany, replaced the bone marrow of an HIV patient with the bone marrow of a donor who has natural immunity to HIV. The new bone marrow in the patient then produced immune-system cells that are immune to HIV. Being unable to hijack any immune cell, the HIV has simply disappeared. The patient has been free of HIV for about 2 years. Some physicians at UCLA have developed a similar therapy and plan to commercialize it."
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If they were male (Score:5, Funny)
Genetics at work? (Score:5, Interesting)
Just my first thoughts on the subject. I would like to know more about the study.
Re:Genetics at work? (Score:5, Interesting)
I don't think that's exactly the case. HIV is only twenty-five years old, which certainly isn't enough time for genetic evolution to take place (especially considering the relatively slow reporductive rate of humans).
It's more likely they've an odd mutant gene that by coincadence makes them immune to the virus.
Parent
Re:Genetics at work? (Score:5, Informative)
HIV is most certainly NOT only 25 years old.
It's extremely old, they have preserved tissue samples from almost 50 years ago or so that have been found to contain the virus (the subject died in exactly the same way as the first cases presented here)
(an english sailor died of a oppertunistic diseases, and after he died, tissue was preserved for later study.)
The event that has made HIV into a new epidemic is massive changes in social morality. Originally, HIV was called the Gay-Related immuno-deficiency syndrome or somesuch, because it was primarily affecting people who were outwardly gay.
Of course, it turned out that these people were just starting to be very broad in their choice of partners, and of course, people were starting to share needles for drug use.
ashridah
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Re:Genetics at work? (Score:5, Insightful)
Perhaps you could explain how this observation works with the fact that the most virulent New World disease (Syphilis) managed to spread like wildfire from Catholic Spain at the height of the Inquisition, throughout European society. And while you're at it, perhaps you could explain how it was still a significant and common disease at the height of the Victorian period.
Maybe I'll save you the effort. Both Syphilis and HIV/AIDS were enabled by revolutions in *Human Mobility*, not changes in morality. The syphilis epidemic erupted at the same time that commerce via ship hit a spike, and HIV/AIDS hit us when air travel spiked.
It's no surprise that 'Patient Zero' in the US HIV/AIDS outbreak was an airline steward. It *is* a coincidence that he happened to be gay.
Parent
Re:Genetics at work? (Score:5, Informative)
Mutations happen all the time - 0.0000000000000214/nucleotide/generation according to these guys [nih.gov]. Now multiply that by 3 billion nucleotides in a human, and 70(?) days to replace all the cells in your body. Most of the time, the mtuation is fatal and the cell dies. Most of the rest of the time, it does nothing at all. Once in a while, you get a mutation that is actually beneficial. And once in a while, that mutation happens to occur in gamates, so it actually gets passed on to children. That's clearly what happened in this case.
Parent
Virtual Light (Score:5, Interesting)
Not really news (Score:5, Informative)
The only novel thing about this discovery is that it was in Asians, vs. the Caucasian populations in which immunity had previously been reported (and I suppose African as well, even though the Kenyan prostitutes as referenced above turned out to not be immune). The article is pretty worthless, not even listing what the "mutant genes" are, but it's a pretty good guess that CCR5 and/or CXCR4 is involved.
CCR5delta32 is probably the mutant gene (Score:5, Informative)
Even the statement about putting the "gene" in the vagina or rectum is not new: see microbicides [google.com].
Just a word to the wise, news like this will rarely, if ever, scoop a scientific publication in Science or Nature. If the discoveries truly have any scientific merit whatsoever, you'll more likely read about it in these journals or the media commotion stirred by these publications. In other words, unless somewhere in the article is says "results of these studies published in the journal [place name of journal here]," the results have not been peer reviewed. Therefore, "there's nothing to see here, move on."
Parent
immunity? someone should research slashdot (Score:5, Funny)
Glad to know (Score:5, Funny)
seen this immunity before... (Score:5, Informative)
Geneva - Researchers have uncovered unusual behaviors of human immune systems that seem to have protected certain babies in Canada [aegis.com], prostitutes in Thailand [aegis.com] and Africa, and gay men in San Francisco from HIV, despite exposure to the AIDS virus.
The protections do not appear to be genetic, and may offer some critical clues to those hoping to make a vaccine against HIV.
At Mount Sinai Hospital in Toronto, Dr. Kelly MacDonald and a team of pediatricians noticed something odd earlier this year: HIV-positive mothers did not pass the virus to babies who were born with immunologically incompatible blood. In cases of incompatibility, the mother has one genetic type of immune system markers, and the baby a different set. This can put the baby at risk of being attacked by the mother's immune system.
But, in the case of HIV-infected mothers, this immunological incompatibility saved the babies from HIV, MacDonald reported yesterday. The finding was based on a study of 111 mother / child pairs.
MacDonald believes that a key factor in the babies' genetic makeup - called A2/A6802 supertype - by fortunate coincidence prevents HIV from infecting the child. When the mother and child share the same genetic makeup in their immune system, MacDonald discovered, the child is 2.63 times more likely to get infected with HIV.
Since approximately 40 percent of the population worldwide has the A2/A6802 supertype, it makes it an attractive target for vaccine design, MacDonald said.
The U. S. Centers for Disease Control and Prevention studied 280 prostitutes in Thailand who had worked in brothels for three years or more, and a group of non-prostitute Thai women. Not surprisingly, the prostitutes were far more likely to be infected with the virus, and 47 percent were HIV-positive, the CDC reported yesterday.
Remarkably, however, nine of the prostitutes were negative for HIV, even though they had genital herpes [aegis.com] and syphilis - clear indications of unsafe sexual behavior. The women did not have any of the genetic mutations that have been shown to protect some Caucasians from HIV. But they did apparently have complete immunity. Cells of their immune systems were killing every HIV to which they were exposed, the CDC team discovered. And laboratory studies revealed that their CD8 T-cells, a type of white blood cell, were secreting a factor which, when mixed in a petri dish with human cells and HIV, stimulated immune cells to destroy the virus.
Dr. Jay Levy of the University of California in San Francisco has presented evidence of a CD8-produced factor that stops HIV, as well. For years he has tried to isolate the mysterious substance, to no avail. But it could result, he said in a speech, in a way to maintain control of the virus without the need for antiviral drugs.
Sharon Stranford, a researcher in Levy's laboratory, examined the immune system cells of gay San Francisco men who have been exposed repeatedly to HIV and never become infected. She said that the CD8 cells in these men make a mysterious factor that protects against HIV. But it is not the same as the one discovered in Thai prostitutes, Stranford said, because it blocks HIV without prompting immune system cells to kill the virus. It works by blocking the ability of HIV to make copies of itself, Levy said.
Finally, a CDC team working in Abijan, Ivory Coast [aegis.com], has also found a group of uninfected prostitutes. They, too, lack any genetic protection. And their ability to fight off HIV is also immunological. The team hasn't yet worked out the details, researchers said, but it is clear that immune system cells in the African prostitutes are highly activated, as if constantly ready to go to war.
Immunity? (Score:5, Informative)
The specific 'mutation' involve CCR5, a coreceptor of HIV-1. An uncommun deletion called CCR5delta32 make it so that M-tropic HIV-1 can't enter CCR5+ cells in homozygote individuals (2 copies of the mutant gene). Heterozygotes (having a functional CCR5 and a mutated one) show less resistance to infection (70% resistance, estimated).
HIV-1 can exhibit a tropism (T-tropic) for another coreceptor, CXCR4, for which no mutation is known, so total immunity isn't exact; we can talk about resistance at best. M-tropic viruses are associated with de novo infection, and a switch to T-tropism is thought to be a turning point in the degeneration to AIDS (but not always).
Even CCR5delta32 individuals can be infected (althought have far less risk than you and me). Even then, the infection progress far more slowly than in normal individuals... they're called long term non-progressors. Won't develop AIDS in their lifetime, but still infectious, which can be dangerous...
Immunity (Score:5, Funny)
I personally plan to remain vulnerable. Alas.
resistant, not immune (Score:5, Informative)
Re:Spontaneous mutation? (Score:5, Interesting)
It's not something I'd especially want to gamble on, though - HIV mutates nearly every time it infects, and at some point I think these people who are now immune won't be immune any longer.
Parent
Delta 32 (Score:5, Interesting)
I wonder if either of those fellows could have been carriers of the delta 32 gene, a mutated form of the gene CCR5:
"In 1996, research showed that delta 32 prevents HIV from entering human cells and infecting the body"
http://www.pbs.org/wnet/secrets/case_plague/
I didn't see in the article anywhere where it mentioned which gene was affected in the Chinese women, but it seems like to be a different one, based on the information presented in the "Secrets" show:
"O'Brien assembled an international team of scientists to test for the presence of delta 32 around the world. "Native Africans did not have delta 32 at all," O'Brien says, "and when we looked at East Asians and Indians, they were also flat zero." In fact, the levels of delta 32 found in Eyam were only matched in regions of Europe that had been affected by the plague and in America, which was, for the most part, settled by European plague survivors and their descendents."
It was a really good show and if you get the opportunity to watch it, I highly recommend that you do.
Parent
Dubious Science (Score:5, Funny)
In Zhu's opinion, if medicine functioning similarly with the genes was put in the vagina and rectum, the HIV virus couldn't find its carrier to enter the human body and thus would be expelled.
Does this make sense to anyone? Granted, these are the reporter's words, not the doctor's words... but that just doesn't sound logical to me. The virus is there, in contact with this "medicine" and your own cells. Because of the medicine's structure, the virus can't affect it, but how does that help your own cells, which do NOT have that protection?
Frankly, the simple (but often unused/misused) "condom" solution seems easier in this example then the medicine he's talking about.
Much of the AIDS epidemic in Africa is directly caused by people misunderstanding how the virus is transmitted and treated (no, sex with virgins or babies won't help you), due in some cases to the sheer stupidity of certain leaders ("HIV does NOT cause AIDS"), poor education programs, and the equally stupid refusal of certain other religious-minded leaders who refuse to support programs that advocate anything other than celibacy to prevent STDs. Madness.
I hope that at a minimum, China is putting some serious resources into educating their population about how HIV/AIDS works, and how to avoid getting it. Obviously that's not the end of the battle, but it's the basic starting point.
Parent
Re:Lucky ladies! (Score:5, Insightful)
Indeed! Now all they have to worry about is...
Gohnorrea
Herpes
Chlamydia
Syphillis
G
HPV
Hepatitus
Trichomoniasis
and more! Lucky bitches...
Parent
Re:Lucky ladies! (Score:5, Informative)
Gohnorrea
Herpes
Chlamydia
Syphillis
G
HPV
Hepatitus
Trichomoniasis
and more! Lucky bitches...
In order....
Curable.
Nasty stuff, but not fatal.
Curable.
Curable.
Nasty stuff, once again not fatal.
Nasty stuff, not fatal unless it causes cancer.
Possibly fatal.
Nasty stuff, but curable.
HIV is the queen mother of STDs, once that is out of the way, there will be a lot more au naturale love happening in the world.
LK
Parent
Just like Password (Score:5, Funny)
Herpes....
Chlamydia....
Syphilli
Genital Warts...
HPV....
Hepatitus...
Trichomoniasis..
I know! Things the average Slashdotter won't ever have to worry about.
ding ding ding
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Re:Lucky ladies! (Score:5, Insightful)
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Re:Lucky ladies! (Score:5, Informative)
Trust me, that abrupt "stoppage" usually lasts much, much longer than nine months...
Parent
Re:Lucky ladies! (Score:5, Funny)
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Re:Lucky ladies! (Score:5, Insightful)
I think it would be totally awesome if some kind of imaginary god did try and punish it's creation through the use of a cruel, life destroying virus - only to have his divine will deflected by something so simple as a tiny thicknesses of latex, education, testing and screening, as well as the hard work of doctors and scientists around the globe.
Would me wonder who should be quaking in fear from who.
Parent
Re:Immune (Score:5, Informative)
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Patents are the real key (Score:5, Interesting)
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Re:Immune (Score:5, Informative)
From the article
"Before, such mutant genes were only found in Caucasians. The finding has encouraged us to do further research in China, with the aim of developing medicines to prevent and cure HIV/AIDS for different races,"said Zhu.Sounds like some mutant genes have been found previously, so I am not sure if this will add any new information to the fight against AIDS.
China is now at a key moment in adopting effective measures to control and prevent HIV/AIDS as the disease moves from high risk populations to the general population, in most cases though sexual transmission, Zhu pointed out.China had better be prepared for a potential disaster. Even if the presense of this "mutant" gene does lead to some sort of cure, it will probably take years to develop and test. In the meantime, China, along with most Middle Eastern and Asian countries, has a high risk of having an AIDS related disaster of a scope way beyond what we now see in Africa. We're talking tens of millions of people infected and/or dying all across the Middle East and Asia.
Parent
Re:Immune (Score:5, Interesting)
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Re:Immune (Score:5, Informative)
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Re:Immune (Score:5, Informative)
My biology teacher covered it as part of our lesson on HIV, about 3 years ago. Basically, it has to do with the structure of their white blood cells. Specifically, they lack the CCR-5 protein for the virus to latch on to. The best part is that people can function just fine without this protein, so there don't appear to be any ill effects. The trick now is figuring out how to confer the immunity on those not born with it.
A simple search for "ccr-5" will give a whole bunch of articles for anyone who's interested.
Parent
Come to Asia and taste it, buddy ! (Score:5, Informative)
You sez:
"culturally Asians seem to be a lot less
promiscuous, which would imply that this
disaster doesn't seem so imminent"
This is so only to show others.
Asian culture is at its best in the sex scene.
On one hand, they will pretend that they are not sexually promiscuous, and on the other hand, the vast majority of Child Prostitution in the world happen throughout Asian countries. You can find child prostitutes in Indonesia, China, India, Kampuchia (formerly known as Cambodia), Thailand, Vietnam, Laos, Taiwan, Bangladesh, Nepal, Hong Kong, The Philippines, Malaysia and so on.
If you are willing to pay, you can even participate in the "deflowering" act, where you'd get a virgin child - male or female - for his / her first night.
What you do to them, as long as you don't kill them, is entirely up to you.
Parent
There are asian sluts out there, believe me. (Score:5, Funny)
Being turned down by asian chicks doesn't mean asian cultures are less promiscuous
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1 More Reason to Find Swedish Women Hot (Score:5, Interesting)
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Re:Not as interesting as it sounds... (Score:5, Interesting)
No one knows, but it doesn't seem to be linked to morphological differences in the brain. And I doubt we'll find out any time soon, since bisexuals are generally treated as deviants by both hetero- and homosexuals (except when it's part of some straight guy's "bi-babe" fantasy).
Max
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Re:I hope this is true (Score:5, Interesting)
Same goes for any kind of cancer - it can insidiously grow in you until there's nothing you can do about it but waste away and die.
Probably going to burn some karma with those comments, but it's a terrible disease that they're working on. I hope they find a cure and kick its ass - same for cancer - but it's just another way to die.
Parent
otherwise completely normal (Score:5, Interesting)
A small fraction of people seems to be resistant to HIV infection because they carry idiosyncratic mutations that interfere with the way the HIV virus works. That doesn't mean they have a "pathetically weak immune system"; in fact, such mutations generally have no known effects at all other than conferring HIV resistance. Furthermore, resistance of some fraction of the population to specific viruses is a common occurrence.
But, hey, if that's what these two women want for their life, that's their problem.
WTF is that supposed to mean? One of the women in question was exposed to HIV from her husband, who was infected through a blood transfusion. It's bad enough that bigoted right wingers confuse stupidity and carelessness (unprotected sex) with immorality, but now people like you even consider accidentally getting a tainted blood transfusion a lifestyle choice and a moral failing?
I think you demonstrate just how absurd your kinds of views are, and the blithering nonsense that preceded it showed how uninformed you are.
Parent
Re:It seems unlikely. (Score:5, Informative)
Hmmm...Is the parent a nice molecular-biology troll or just a gem of ignorance mixed with self-confidence?
"Because there's very little in the virus that is guaranteed to be common to ALL instances of said virus, it is hard to see how immunity could exist, even in theory."
The resistance mutation depends from the absence of a particular chemokine receptor on human white blood cells. In principle, the HIV virus could use another receptor to enter. In practice it's quite improbable the virus can mutate his whole capsid proteins to get advantage of a totally new receptor.
"Then, you have other problems. HIV is detected in a number of ways, but probably the most common way is to detect the antibodies to the virus. This causes an obvious problem. If your immune system is damaged, in some way, it may not be able to detect the virus and/or produce antibodies to it. Either way, any technique for detecting HIV through the antibodies would fail."
You obviously have no grasp of immunology. HIV infects primarily subsets of T cells. They are not B cells, that produce soluble antibodies. B cells are not attacked by HIV,therefore you argument is bullshit.
(In fact, B cells are indirectly affected by HIV [sciencedaily.com], but only in late stages of AIDS disease.)
"So much so that they could fight the disease and not even need to generate antibodies to do so."
You have no grasp of immunology,it's obvious now. Your body doesn't "feel the need" for antibodies.It just produces them when encounters an antigen. In fact, you probably already have cells with anti-HIV antibodies: they're just very,very few and are not activated.(Wanna know why? RTFM, i.e. a molecular immunology textbook)
"In theory, since we don't actually know in practice."
We know. Check other /. comments and what I wrote before.
"Provided the self-destruct triggers faster than the virus can spread"
It seems you know nothing about virology and apoptosis too...
"...you're probably not going to live very long anyway, and your quality of life isn't going to be noticably better than those with the disease. In fact, it would probably be a whole lot worse. But, hey, if that's what these two women want for their life, that's their problem. "
If these women were immunodeficient, physicians should have noticed it immediately. Such a severe immunodeficience is, like you seem to understand, practically incompatible with life.
Parent
Re:It seems unlikely. (Score:5, Informative)
Parent
Re:It seems unlikely. (Score:5, Informative)
Read this and learn: [rcn.com]
Origin of HIV
Genome sequencing of different isolates of HIV-1 and HIV-2 shows that each is related to retroviruses that occur in primates in Africa. These are designated simian immunodeficiency viruses (SIV) although they do not cause immune deficiency (or any disease) in their natural host. However, on those occasions when a SIV accidentally infects a primate of a different species, it does cause disease in the new host. The human epidemic is one example.
HIV-1 is most closely related to a SIV found in chimpanzees (Pan troglodytes troglodytes)
HIV-2 is most closely related to a SIV that occurs in the sooty mangabey (Cercocebus atys).
Genome analysis also permits the construction of phylogenetic trees which reveal different clades of HIV just as such analysis reveals evolutionary relationship between species.
(emphasis mine)
Parent
Re:Conspiracy theory (Score:5, Funny)
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Re:Darn! (Score:5, Interesting)
While whether or not such research should have access to federal funds is debatable (and I'd probably agree that the current regulations are too restrictive), it's a far cry from actually banning such research.
One useful statistic that I've never come across is the relative ammounts of research funding spent in the U.S. by private vs. public/government sources.
Parent
Re:Someone call... (Score:5, Funny)
I'm imagining them in the leather bodysuits from the movies, but crotchless and with a opening at the elbows for shooting up. Their arch-nemesis shall be Donkey Boy and Heroin Girl.
Oh god, what kind of pathetic geek am I? I just turned an important piece of AIDS research that could help millions into a bad porno comic joke... I will log off before I embarrass myself further.
If you need me, I will be in my bedroom, masturbating...
Parent
RTFA (Score:5, Informative)
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Re:Tell me it ain't so ! (Score:5, Insightful)
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Re:Tell me it ain't so ! (Score:5, Insightful)
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Re:Tell me it ain't so ! (Score:5, Insightful)
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um, no (Score:5, Informative)
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Re:Tell me it ain't so ! (Score:5, Insightful)
I think it is time to officially retire the term "third world" since hardly anyone has a clue what it means and keeps making up their own definitions. I have to admit that including a communist country with nuclear weapons is the most imaginitive inclusion in the "third world" I've yet to see.
http://en.wikipedia.org/wiki/Third_world [wikipedia.org]
Isn't it ironic?
Parent
Re:Tell me it ain't so ! (Score:5, Informative)
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