New 'iTab' antibodies could offer breakthrough hope for millions with autoimmune diseases

A major breakthrough could offer fresh hope for millions living with debilitating autoimmune diseases. Scientists have discovered a natural way to 'tame' the body's overactive immune system without wiping out its vital defences.

The body’s own secret weapon

Scientists at The University of Osaka have identified a new class of antibodies, dubbed 'iTabs'. These naturally occurring antibodies can suppress specific immune responses.

Their groundbreaking research was published this month in Nature Communications. It suggests a major shift in how conditions like multiple sclerosis could be treated.

Our immune system is brilliant at fending off infections, but sometimes it turns against itself, attacking healthy cells. This leads to painful and often severe autoimmune disorders.

How iTabs work their magic

T cells are the immune system's frontline defenders, but they can sometimes misidentify healthy cells as threats. This is where iTabs step in.

"We discovered a new immune regulatory mechanism driven by a novel antibody called an ‘immune-induced TCR-like antibody’ or iTab," explained lead author Kazuki Kishida. He added: "These antibodies selectively suppress the activity of T cells, blocking the immune response to specific antigens."

Researchers found that iTabs act by mimicking a receptor on T cells. They latch onto a molecule called MHC class II. This effectively stops the T cell from 'plugging in' and activating an immune attack.

Crucially, these clever antibodies are produced naturally by the body during an immune response. In mice, they reduced the severity of autoimmune disease, similar to multiple sclerosis. They even delayed its onset.

Targeted treatment, not total shutdown

Many existing autoimmune treatments suppress the entire immune system, leaving patients vulnerable to other infections. This new approach offers a far more precise solution.

Senior author Hisashi Arase shared his vision: "By designing vaccines or therapies that promote iTab production, it may be possible to treat conditions driven by overactive T cells." He added: "This could leave the rest of the immune system intact."

This means future treatments could target only the specific, harmful immune responses. It would protect patients without compromising their general defence against illness.

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OFFICIAL SOURCE VERIFICATION: This report is based on official data from University Newsroom. Document: [Taming overactive immune systems with antibodies: hope for autoimmune diseases](https://www.asiaresearchnews.com/node/22673) Source Link: https://www.asiaresearchnews.com/node/22673