Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

A genetic accelerator hits the gas on autoimmune diseases

17.01.2012
Italian researchers found a DNA sequence that cause the most severe cases of lupus

A "genetic accelerator" is responsible for the most severe cases of Lupus (systemic lupus erythemathosus), an autoimmune disease: the accelerator, called enhancer HS1.2, speeds up the activity of some critical genes of the immune system involved in the disease.

A team of Italian researchers at the Catholic University of Sacred Heart in Rome found that the enhancer HS1.2 is like the accelerator of the car and boosts the pathological immune response typical of the disease by enhancing the production of the pathological antibodies that attack the patient's body instead of defending it (autoantibodies).

Professor Gianfranco Ferraccioli, Head of the Rheumatology Unit of Rheumatology and Internal Medicine of the Catholic University led the research in collaboration with Professor Domenico Frezza at Tor Vergata University of Rome and Professor Raffaella Scorza at University of Milan and they published their results in the Annals of the Rheumatic Diseases.

The discovery could lead to more targeted and effective therapies against this complex disease, in particular against the most severe cases, Professor Ferraccioli explained.

Systemic lupus erythematosus is an autoimmune disease, that is a condition in which the patient's immune system goes haywire and begins to attack the body rather than defend it. Lupus affects about 60,000 people in Italy, with a major prevalence among females. Lupus affects so several different organs and tissues and causes a variety of symptoms, including joint pain, fever, skin rashes, hair loss, Raynaud's disease, anemia, nephritis.

The therapies currently used are based on cortisone, anti-malarial drugs and immunosuppressants (azathioprine, mycophenolate, cyclophosphamide) and biologic drugs (rituximab, Belimumab).

But in many cases Lupus is more aggressive and so far the origin of this particular severity was quite unclear.

Italian researchers discovered that the cause of the most severe cases is the accelerator HS1.2 enhancer. Enhancers are DNA sequences that accelerate the activation of neighboring genes and enhance their functioning, hence the name.

HS1.2 leads to enhanced activation of the "transcription factor NF-KB" (a transcription factor is a molecule that "reads" the genes to make them work), which in turn dramatically increases the aggressiveness of the inflammatory processes underlying the disease.

Italian researchers have discovered that over 30 per cent of the patients has the enhancer HS1.2 in their Dna and that it causes a more severe form of Lupus.

The researchers reached this finding after demonstrating that the enhancer HS1.2 promotes also other autoimmune diseases such as rheumatoid arthritis and identified how the enhancer causes increased susceptibility to autoimmune diseases.

"Our results suggest that new drugs that turn off the enhancer HS1.2, or inhibit its effect on NF-KB, can stop the disease without the need for immunosuppressive drugs or other therapies with many side effects," Ferraccioli said. "Moreover the discovery of the role of this enhancer allows us to better classify patients and formulate a precise prognosis for each one moving toward more personalized care."

Gianfranco Ferraccioli | EurekAlert!
Further information:
http://www.rm.unicatt.it

More articles from Health and Medicine:

nachricht A promising target for kidney fibrosis
21.04.2017 | Brigham and Women's Hospital

nachricht Stem cell transplants: activating signal paths may protect from graft-versus-host disease
20.04.2017 | Technische Universität München

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

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

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

7th International Conference on Crystalline Silicon Photovoltaics in Freiburg on April 3-5, 2017

03.04.2017 | Event News

 
Latest News

NASA's Fermi catches gamma-ray flashes from tropical storms

25.04.2017 | Physics and Astronomy

Researchers invent process to make sustainable rubber, plastics

25.04.2017 | Materials Sciences

Transfecting cells gently – the LZH presents a GNOME prototype at the Labvolution 2017

25.04.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>