Parkinson’s Early Signs: Immune System Link
- The body's T cells, which typically fight disease, can sometimes attack healthy tissue.
- Now, research from the La Jolla Institute for Immunology (LJI) suggests T cells may also play a role in the progress of Parkinson's disease.Alessandro Sette, a professor at...
- A recent study indicated which T cell subtypes target alpha-synuclein, offering more evidence that T cell reactivity is involved in Parkinson's.
Uncover a crucial link in the fight against a progressive disorder: Parkinson’s disease.New research highlights the role of T cells in the early stages, potentially revolutionizing the detection and treatment of this neurodegenerative condition. Scientists are discovering T cell reactivity, wich may appear before the onset of motor symptoms; they target key proteins, suggesting a possible autoimmune component. This could lead to innovative diagnostic tools. Join News Directory 3 as we explore how this vital immune system insight may transform the future of Parkinson’s care. Discover what’s next …
T Cells May Signal Early Parkinson’s, Study Finds
The body’s T cells, which typically fight disease, can sometimes attack healthy tissue. For those wiht autoimmune diseases, this “amiable fire” is a significant problem, leading to conditions like type 1 diabetes and rheumatoid arthritis.
Now, research from the La Jolla Institute for Immunology (LJI) suggests T cells may also play a role in the progress of Parkinson’s disease.Alessandro Sette, a professor at LJI, and his team discovered that many Parkinson’s patients have T cells targeting alpha-synuclein and PINK1, key proteins on vulnerable brain cells. This suggests a link between T cell reactivity and Parkinson’s disease.
A recent study indicated which T cell subtypes target alpha-synuclein, offering more evidence that T cell reactivity is involved in Parkinson’s. However, the timing of T cell involvement remained unclear.
“We can see these reactive T cells in people after they develop Parkinson’s,but what happens before that?” asked Emil Johansson,a visiting scientist at LJI and co-author of the study.
The new findings, published in npj Parkinson’s Disease, reveal that perhaps harmful T cell reactivity peaks during the prodromal period-the years leading up to a Parkinson’s diagnosis. This discovery could revolutionize early detection and treatment of Parkinson’s disease.
“This T cell immunity could be a marker for early Parkinson’s treatment,even before people show symptoms,” said Sette,senior author of the paper. “and there’s reason to think that treating Parkinson’s in the very early stages can lead to a better outcome.”
Study Details
The prodromal phase of Parkinson’s can stretch for years, even decades, before motor symptoms appear.Because this phase is hard to detect, the LJI team examined T cell reactivity in volunteers with a high risk of developing Parkinson’s disease.These individuals had genetic risk factors and early symptoms like disrupted REM sleep and loss of smell.
Using a technique called Fluorospot, researchers analyzed blood samples to identify volunteers with high levels of T cells reacting to alpha-synuclein or PINK1. The results showed that these potentially harmful T cells appear well before motor symptoms manifest.
“You can see that T cell reactivity before diagnosis,” Sette said.
Notably, T cell reactivity to PINK1 was highest before diagnosis.
Sette cautioned against drawing firm conclusions, emphasizing that Parkinson’s is complex. The research doesn’t definitively prove that T cells drive the inflammation associated with the disease. The question remains whether the destruction of nervous system cells causes autoimmunity, or vice versa.
“Certainly, the fact that this T cell reactivity is highest when patients are closest to a diagnosis is intriguing,” Sette said. “The finding suggests T cells could have something to do with it.”
What’s next
The research may lead to new diagnostic tools for early Parkinson’s detection. LJI scientists are also exploring ways to curb inflammation and protect brain cells.Johansson noted that some T cells help reduce inflammation, and researchers aim to identify these protective T cells to potentially counteract autoimmune T cells. Sette’s team is also investigating the role of T cells in other neurodegenerative diseases, such as Alzheimer’s.