New Targeted Therapy Can Benefit Multiple Sclerosis patients

by Ramya Rachamanti on  February 6, 2020 at 10:45 AM General Health News
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Drugs targeting a specific immune molecule (IL-17) could help treat Multiple sclerosis (MS). The scientists, led by Kingston Mills, Professor of Experimental Immunology, and Aoife McGinley, Postdoctoral Fellow, in Trinity's School of Biochemistry and Immunology have published their results in the prestigious Cell press journal, Immunity.
New Targeted Therapy Can Benefit Multiple Sclerosis patients
New Targeted Therapy Can Benefit Multiple Sclerosis patients

Multiple sclerosis (MS) is a debilitating disease that affects around 2.3 million people globally and over 9,000 people in Ireland. It is associated with infiltration of immune cells into the brain and spinal cord that cause damage to nerves, leading to neurological disabilities.

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However, the cause and precise immunological basis to this autoimmune disease is still unclear.

Studies in a mouse model of MS, called experimental autoimmune encephalomyelitis (EAE), have shown that immune 'T cells', which secrete an immune molecule called 'IL-17', cause damage to the myelin sheath that surrounds nerves in the central nervous system (CNS).

Early clinical trials with antibody-based drugs that block IL-17 are showing promise in the treatment of relapsing-remitting (RR) MS and have already been licensed for the treatment of psoriasis, another common autoimmune disease.

The just-published study from Professor Mills' research group outlines an entirely new role for IL-17 in EAE and, potentially, in MS.

Professor Mills said:

"Our team found that IL-17 plays a critical 'priming' role in kick-starting the disease-causing immune response that mediates the damage in EAE and MS."

"The new research shows that, instead of playing a direct part in CNS pathology, a key role of IL-17 is to mobilise and activate an army of disease-causing immune cells in the lymph nodes that then migrate to the CNS to cause the nerve damage."

Dr Aoife McGinley added:

"Crucially, our findings suggest that drugs that block IL-17 may not need to get across the blood-brain-barrier to be effective in treating MS."

"So, as well as shedding new light on the importance of IL-17 as a drugs target in RR MS, our research highlights the huge potential of drugs that block IL-17 in the treatment of other autoimmune diseases, such as psoriasis and rheumatoid arthritis."

Source: Eurekalert

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