T cells tagged posts

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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Allergy Study on ‘Dirty’ Mice Challenges the Hygiene Hypothesis

mice
Credit: CC0 Public Domain

The notion that some level of microbial exposure might reduce our risk of developing allergies has arisen over the last few decades and has been termed the hygiene hypothesis.

Now, an article published in Science Immunology by researchers from Karolinska Institutet challenges this hypothesis by showing that mice with high infectious exposures from birth have the same, if not an even greater ability to develop allergic immune responses than “clean” laboratory mice.

How microbes may prevent allergy has been a topic of great interest in recent times. Studies have suggested that certain infections might reduce the production of inflammatory antibodies to allergens and alter the behavior of T cells involved in allergies...

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Why we Lose Fat and Muscle during Infection

Parasitic Trypanosoma brucei parasites (dark blue) among mouse blood cells (light blue and white).
Parasitic Trypanosoma brucei parasites (dark blue) among mouse blood cells (light blue and white).

Scientists discover role immune system’s T cells play in regulating fat and muscle loss during infection in mice. Scientists discovered that 1) the wasting response to T. brucei infection in mice occurs in two phases, each regulated by different immune cells and 2) fat loss did not benefit the fight against infection, but muscle loss did. The findings inform the development of more effective therapeutics that spare people from wasting and increase our understanding of how wasting influences survival and morbidity across infections, cancers, chronic illnesses, and more.

Although infections can present with many different symptoms, one common symptom is the loss of fat and muscle, a proc...

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T cells can Activate Themselves to Fight Tumors

Immunofluorescence imaging captures an auto-signaling T cell
Immunofluorescence imaging captures an auto-signaling T cell. Photo credit: NIAID.

When you need a bit of motivation, it often has to come from within. New research suggests cancer-fighting immune cells have found a way to do just that.

Scientists at University of California San Diego have discovered a property of T cells that could inspire new anti-tumor therapeutics. Through a previously undescribed form of cell auto-signaling, T cells were shown to activate themselves in peripheral tissues, fueling their ability to attack tumors.

The study, published in Immunity, was led by study first author and postdoctoral fellow Yunlong Zhao, Ph.D., and co-senior authors Enfu Hui, Ph.D., professor in the School of Biological Sciences at UC San Diego and Jack D. Bui, MD, Ph.D...

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