T cells tagged posts

Ointment containing DNA Molecules can Combat Allergic Contact Dermatitis

Ointment containing DNA molecules can combat allergic contact dermatitis
Fluorescence microscopic imaging of the skin treated with the aptamer cream: – The aptamers (here marked in pink) were applied to the top layer of the skin in the form of an ointment and also penetrate into the deeper dermal layers (nucleus: blue; antigen-presenting cells: green). Credit: Marlene Gottschalk

Researchers at the University of Bonn have isolated a DNA molecule that is suitable for combating allergic contact dermatitis in mice. The aptamer binds to certain immune system messenger substances, rendering them ineffective. This even works if the active ingredient is applied to the skin in the form of an ointment.

The working groups involved hope that aptamer creams such as this could also be suitable for treating other skin conditions...

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Immune Genes are Altered in Alzheimer’s Patients’ Blood

A new Northwestern Medicine study has found the immune system in the blood of Alzheimer’s patients is epigenetically altered. That means the patients’ behavior or environment has caused changes that affect the way their genes work.

Immune genes are altered in Alzheimer's patients' blood
Credit: Neuron (2024). DOI: 10.1016/j.neuron.2024.01.013

Many of these altered immune genes are the same ones that increase an individual’s risk for Alzheimer’s. Northwestern scientists theorize the cause could be a previous viral infection, environmental pollutants or other lifestyle factors and behaviors.

“It is possible that these findings implicate the peripheral immune response in Alzheimer’s disease risk,” said lead investigator David Gate, assistant professor of neurology at Northwestern University Feinberg School of Medicine...

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Study: In patients with Long COVID, Immune cells don’t follow the rules

Kailin Yin speaking with Nadia Roan in the lab
Kailin Yin (left), a postdoctoral fellow in the Roan Lab and co-first author of the study, collaborates with Gladstone Senior Investigator Nadia Roan. Their study revealed unusual activity among certain immune cells in people with long COVID.

People with long COVID have dysfunctional immune cells that show signs of chronic inflammation and faulty movement into organs, among other unusual activity, according to a new study by scientists at Gladstone Institutes and UC San Francisco (UCSF).

The team analyzed immune cells and hundreds of different immune molecules in the blood of 43 people with and without long COVID...

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Researchers Identify why Cancer Immunotherapy can cause Colitis

green background intestines in pink
Jacob Dwyer, Michigan Medicine

Researchers at the University of Michigan Health Rogel Cancer Center have identified a mechanism that causes severe gastrointestinal problems with immune-based cancer treatment.

They also found a way to deliver immunotherapy’s cancer-killing impact without the unwelcome side effect.

The findings are published in Science.

“This is a good example of how understanding a mechanism helps you to develop an alternative therapy that’s more beneficial. Once we identified the mechanism causing the colitis, we could then develop ways to overcome this problem and prevent colitis while preserving the anti-tumor effect,” said senior study author Gabriel Nunez, M.D., Paul de Kruif Professor of Pathology at Michigan Medicine.

Immunotherapy has emerged as a pr...

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