Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Advances in HIV research - mice formed antibodies against HIV protein

14.05.2009
A research team at Örebro University in Sweden has succeeded in changing the genes in plants so they can function as a vaccine against HIV.

Through gene modification the plants have acquired the capacity to produce a protein that is part of the virus, and the project has taken a giant step forward in that mice that have been fed the plants have reacted and formed antibodies against the protein. The findings are presented in a new academic dissertation at the university.

To produce drugs with the help of plants is a rapidly growing research field that offers new potential to combat diseases. At Örebro University researchers have the goal of developing inexpensive and safe protection against HIV, in the form of plants that contain a vaccine against the virus and can be cultivated all over the world. If they succeed, it will be difficult to exaggerate the significance of this for millions of people around the world, not least in the poorest countries.

"A major problem with the HIV virus is that it mutates rapidly and therefore exists in several different variants. In other words, it's not possible to create an effective vaccine that is based on the entire virus. Moreover, this would be far too risky. Instead, we have selected a protein, p24, that exists in all HIV viruses and looks roughly the same in the various virus lines," says Ingrid Lindh, author of the dissertation.

To get plants to produce the p24 protein, the gene that underlies the process must be a part of their own genetic make-up, but since it's impossible to transfer the gene directly from the virus to the plant, the researchers had to take a detour. This was done by first placing the gene into a bacterium that could then transmit it to the plants. The attempt succeeded; the plants produced p24 and also passed on this ability to their offspring.

In the next phase, mice were fed with the p24 plants, and these trials also proved to be successful. The mice's immune defense reacted just as the researchers had hoped, producing antibodies against the protein. In other words, this functioned as a vaccine. This raises hopes that a similar reaction in humans would make them immune to HIV.

"It is highly probable that the human immune system will respond in the same manner, but this is not to say that this would be sufficient to provide complete protection."

To increase the potency of the vaccine, these scientists are therefore going to add more HIV proteins together with other compounds that reinforce the body's reaction to HIV-specific proteins. In parallel with this, they will work to select a suitable vegetable that is easy to cultivate in different climates and is readily accepted in different cultures. Thus far, thale cress (Arabidopsis thaliana) has been used as an experimental plant, a common wild plant that is related to mustard and cabbage and has the great advantage of being well mapped genetically.

"The carrot is a good candidate for producing an edible vaccine, not least because it can be eaten raw, which reduces the risk of the proteins being destroyed by heating. What's more, it's a biennial, which means that it doesn't go to seed the first year, making it easier to ensure that it doesn't spread its genes to other plants close by," explains Ingrid Lindh.

HIV research at Örebro University has been attracting great international attention. It was recently singled out as one of the 20 most promising projects out of 500 current projects at an HIV/Aids conference in South Africa.

For more information contct Ingrid Lindh, +46-70 657 40 75; ingrid.lindh@oru.se.
Pressofficer Ingrid Lundegårdh; +46-705 52 31 26; ingrid.lundegardh@oru.se

Ingrid Lundegårdh | idw
Further information:
http://www.oru.se
http://www.vr.se

Further reports about: Arabidopsis thaliana HIV HIV protein HIV virus Protein Thale cress cabbage genetic make-up p24

More articles from Life Sciences:

nachricht Unique genome architectures after fertilisation in single-cell embryos
30.03.2017 | IMBA - Institut für Molekulare Biotechnologie der Österreichischen Akademie der Wissenschaften GmbH

nachricht Transport of molecular motors into cilia
28.03.2017 | Aarhus University

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A Challenging European Research Project to Develop New Tiny Microscopes

The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.

To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

'On-off switch' brings researchers a step closer to potential HIV vaccine

30.03.2017 | Health and Medicine

Penn studies find promise for innovations in liquid biopsies

30.03.2017 | Health and Medicine

An LED-based device for imaging radiation induced skin damage

30.03.2017 | Medical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>