New Research Shows New way HIV Evades the Immune System

New Research Shows New way HIV Evades the Immune System.

HIV uses our own cellular machinery to disable a signalling pathway (an assembly line of molecules) that produces anti-viral weaponry in the body. The scientists behind the discovery believe It should open the door to a new era of HIV research aiming to cure and eradicate this deadly virus.

 

New Research Shows New way HIV Evades the Immune System

 

New Research Shows New way HIV Evades the Immune System

Scientists have just discovered a new mechanism by which HIV evades the immune system, and which shows precisely how the virus avoids elimination. The new research shows that HIV targets and disables a pathway involving a number of biological molecules that are key in blocking viral activity and clearing infection.

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About HIV:

HIV remains a major global health problem, with over 40 million people infected worldwide. And while people living with HIV have been treated with anti-retroviral therapy for over 30 years, this favoured therapeutic option merely prevents the progression of the disease to AIDS — it doesn’t cure patients of HIV.

The discovery, which opens the door to a new era of HIV research focused on curing people living with the virus, has just been published in international journal, EBioMedicine, which is a collaborative online journal from Cell Press and the Lancet.

During any viral infection our immune system produces a powerful molecule (Interferon), which ‘interferes’ with the infection and the replication of viruses. Interferon activates an assembly line of molecules in our cells — via the Interferon signalling pathway — which causes the body to make antivirals that help to clear the infection.

However, when patients are being treated with anti-retroviral therapy, HIV is not fully cleared by our immune system. Therefore, the scientists from Trinity College Dublin behind the research investigated whether HIV was somehow blocking the Interferon signalling pathway and thus avoiding the immune response that is designed to cure viral infection. The findings confirmed their suspicions.

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Assistant Professor in Immunology at Trinity, Nigel Stevenson, led the work. He said: “We discovered that HIV promotes the destruction of the anti-viral Interferon signalling pathway. Essentially, HIV uses the machinery in our own cells to do this, and the virus is thus able to reduce the production of many important anti-viral molecules. Without these anti-viral molecules, our immune system can’t clear viral infections.”

“Our new revelation sheds new light on how HIV avoids elimination, which, in turn, may explain why HIV is still not a curable disease. We feel this discovery could mark a paradigm shift in our understanding of how this virus evades our immune response. It should open the door to a new era of HIV research aiming to cure and eradicate this deadly virus.”

Source:Trinity College Dublin

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