Tag Archives: HIV

Bee Stings Could Help Save People’s Lives!

Most people that have been stung by a bee would agree that it is a very painful and uncomfortable experience that they would not want to experience again. The pain takes days to go away, and the scar that a bee sting leaves may last weeks. Now though, it looks like a bee sting may not be as bad as it seems. Researchers at the Washington University School of medicine have found that a chemical found in the venom of a bee sting can destroy the human immunodeficiency virus (HIV). What is extremely important is the fact that even though the chemical can kill the HIV virus, regular cells are immune to this chemical and are not affected by it in any way.

Image showing bee injecting venom. Taken from google images creative commons

Researchers believe that their findings will help them develop a vaginal gel that may help prevent the spreading of the HIV virus and be used for therapy. Although they don’t think that the gel may cure the disease completely, it may be used as a preventative measure in areas where HIV is particularly common. The active chemical that researchers believe is causing the observed effects is called melittin. This chemical works by poking holes in the nuclear envelope of the virus, causing large amounts of damage that cannot be easily repaired.

To obtain their findings, researchers loaded melittin into nanoparticles and administered them to patients. These kinds of particles have been found to very effectively treat tumors, so the scientists decided to test them to see if they would be affective in treating other types of diseases. The researchers saw that when the nanoparticles came into contact with HIV infected cells they were destroyed, while the nanoparticles simply “bounced off” the normal cells, which are much larger in size.

Nanoparticle incapsulating a chemical in the middle. This is the kind of mechanism the researchers used. Image from flicker user IBM Research

This is a major breakthrough in the world of science and medicine because HIV has been very hard to treat and prevent in the past. Also, HIV is a relatively common disease and many people suffer from it. It is approximated that about 36.1 million people around the world currently suffer from HIV. Furthermore, 21% of those that are infected in North America don’t even know that they are carriers of the deadly virus. Also, since the melittin loaded nanoparticles are so versatile, the researchers believe that this discovery could lead to the development of treatments for patients suffering from Hepatitis B and C.

Below is a short news report on this groundbreaking discovery:

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So the next time you get stung by a bee and are panicking, calm down and just remember that the venom that the bee just injected you with is being used right now to potentially save millions of lives around the world.

Gagandeep Gill

An Unlikely Hero is the Key to Killing the Human Immunodeficiency Virus (HIV)

Each day, almost 7,000 people contract HIV around the world.  Many scientists have dedicated their entire lives to finding a cure for this virus and it seems that we have come one step closer to finding that cure. With a historical discovery coming out of Washington University, that number could soon be reduced to zero.

Researchers at Washington University School of Medicine in St. Louis have found that bee venom can effectively poke holes in the envelope surrounding the HIV virus and kill it. The potent toxin contained within bee venom is called melittin.

Nanoparticles, when infused with the toxin, can filter HIV through it’s surface and destroy it, while leaving normal cells unharmed due to their much larger size. When nanoparticles come into contact with normal cells, they simply bounce off. Joshua L. Hood, MD, PhD, explained, “The melittin forms little pore-like attack complexes and ruptures the envelope, stripping it off the virus.” The virus has to have a protective coat and there is no way for the virus to adapt when its essential physical property is under attack.

Image displays nanoparticles (purple) infused with melittin (green), with molecular bumpers (small red ovals) allowing them to bounce off of normal body cells. Fuse with HIV (small spiked circles) and destroy their envelope.
Photo credit: Joshua L. Hood, MD, PhD.

The following video by the Huffington Post further explains this topic.

Video source: Huffington Post

There is promising evidence that HIV infection in children will be eliminated. A baby born with HIV in Mississippi has apparently been cured. Its mother was diagnosed with HIV during labor, and the baby received intense care just after 30 hours of birth. This child shows no sign of the virus today.

Most anti-HIV drugs inhibit the virus’s ability to replicate, while doing nothing to stop initial infection. The development of a vaginal gel is the new revelation to prevent the spread of HIV, and in addition, an intravenous treatment to help those already infected and clear HIV from the blood stream.

Are HIV Medications a Thing of the Past?

Being diagnosed with human immunodeficiency virus (HIV) is one of the most devastating things a person can hear.  This virus which breaks down a person’s immune system and eventually leads to acquired immune deficiency (AIDS) is still one of Earth’s incurable tragedies.  However, new research has come to light where gene therapy  may be used as an alternative to medications for patients with HIV.

HIV gains entry into the body by attaching to the surface proteins CCR5 and CXCR4 of a person’s immune cells, also known as T-cells.  The current medication treatment of HIV is called highly active antiretroviral therapy (HAART) which is a mixture of pharmaceutical drugs.  HAART acts to prevent the spread of HIV in the body.   However,  researchers at the Stanford University of Medicine have found a way to halt further HIV infection in the body without requiring patients to take medications.

A model of HIV that was on display at the Smithsonian Museum of Natural History in July of 2012. Image from Fickr user dctim1.

Many different gene therapy research approaches are being investigated, but Dr. Matthew Porteus and his team at Stanford made a unique adjustment to the other research.  The Stanford scientists utilized zinc finger nucleases in order to break open the CCR5 receptor protein’s DNA found on T-cells.  From there, they added three genes that are resistant to HIV in a process known as stacking.  Stacking the genes is what differs between the various teams of gene therapy research.  Faced with the resistant genes, HIV has less of a chance of entering the cell.  In order to test this, the scientists inserted either one, two or the three genes and then exposed the T-cells to HIV.  They found that the cells with the combination of the three genes were the most resistant.

Some people in the world actually have a resistance to HIV because of a mutation in their CCR5 receptors.  Thus, if this new gene therapy can mimic this resistance hopefully HIV will not be as daunting.  Below is a video displaying the research done at the University of Pennsylvania , which is similar to what is being done at the Stanford School of Medicine.  The video is from February of 2011.

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Although this research appears very promising, it is by no means perfect yet. There are certain problems that could arise including the cells not responding to the genes and breakages in the other areas possibly causing cancer or other problems.  This research is extremely new and still has a lot of work to be done before it is ready to be tested on the general public.

Brittany Maxwell